Biological check dam used for erosion gully control and construction method

A biological check dam used for erosion gully control comprises check dams which are arranged at different sections. The biological check dam is characterized in that aspen inserting trunks are planted at the upper end of each check dam and the lower end of each check dam to be used as frameworks, the inserting trunks are woven together and fixed through twigs of chaste trees to form protective faces, detritus or earth stone is stuffed between the protective face at the upper end and the protective face at the lower end, and the stuffing height is 45-55cm; a fixed net which is formed by twigs of chaste trees in a staggered weaving mode is paved on a stuffing base material in the check dam, the two ends of the fixed net are fixed on the inserting trunks through iron wires, and therefore the stability of the check dam is enhanced. The biological check dam is reasonable in structure, strong in stability and water permeability, simple in construction technology, low in manufacturing cost and ...

Mining explosion-proof check valve

The invention relates to a mining explosion-proof check valve which comprises a valve body and a valve rod. The valve body is a three-step cylinder. A large-diameter end of the valve body is connected with a valve cover in a screw thread fit mode, a small-diameter end of the valve body is an explosion-proof end, and the middle of the valve body is a screw. A through valve rod hole is arranged on the valve body in the axial direction. A large-diameter hole is arranged on one side of the valve rod hole, and a small-diameter hole is arranged on the other side of the valve rod hole. A radial locating protruding ring is arranged on the valve rod, the valve rod on one side of the locating protruding ring is an explosion-proof rod, and the valve rod on the other side of the locating protruding ring is a locating rod. A spring is sleeved on the locating rod and arranged in the large-diameter hole of the valve body, and the explosion-proof rod is arranged in the small-diameter hole of the valve ...

Impeller for water pump

The object of the present invention is to maintain a discharge performance by making a discharge flow rate constant in a low rotation region of an engine rotation speed and to reduce the discharge flow rate in a high rotation region. The impeller comprises: a housing case; an impeller base; a vane body; a plate cam; and a single torsion spring, wherein the torsion spring and the plate cam are housed in the housing case and the impeller base, a plurality of vane bodies are provided on an upper surface of the impeller base, the rotary shaft of vane body is inserted rotatably into the holes in the impeller base, the rocking shaft of the vane body is inserted with play into the elliptical elongated holes in the impeller base and the elongated groove in the plate cam, and the rocking shaft is positioned on an outer peripheral side of the elliptical elongated hole in the impeller base by an elastic force of the torsion spring in an engine low rotation region.

Sodium fusidate crystallization method

The invention provides a sodium fusidate crystallization method which comprises the following steps: a, preparing a sodium fusidate solution by taking a acetone water solution as solvent; b, heating the sodium fusidate solution, feeding acetone while stirring, reducing the feeding rate when the sodium fusidate solution is turbid, and standing for crystallization after the feeding operation is finished; and performing solid-liquid separation, leaching the obtained solids with acetone, and then drying to obtain sodium fusidate crystals. According to the invention, the method is simple to operate and low in cost; and the sodium fusidate crystals prepared by the method are stable in crystal form and favorable in flowability.

Detection method for BRAF gene mutation

The invention relates to a detection method for BRAF gene mutation, comprising the following steps: a) extracting DNA of tumor tissue; b) with the extracted DNA in step a) as the template, carrying out PCR amplification by using a primer pair comprising SEQ (1) and SEQ (2) in a sequence table and Taqman-MGB probes of SEQ (3) and SEQ (4); c) carrying out BRAF allele identification and analysis on products of the amplification in step b). The detection method provided in the invention can assist clinicians in detecting BRAF gene mutation of patients and provide guidance and basis for clinicians to use medicines, and therefore risk in treatment for clinicians and economic burden for patients are reduced. According to the invention, high flux detection is realized and up to 96 samples can be detected at a time; the detection method has a simple process, thereby substantially raising detection accuracy; detection time is short; wild type and mutant alleles can be detected simultaneously; and ...

Aliphatic polyester/calcium carbonate composite material and its preparation method

The invention discloses an aliphatic polyester/calcium carbonate composite material. The composite material is obtained through in-situ ring-opening polymerization of 0.3-10 parts of calcium carbonate and 100 parts of a lactone monomer, wherein calcium carbonate is/is not subjected to surface modification treatment, and the morphology of the calcium carbonate has a dandelion shape formed through the self-assembling of sheet-shaped, spherical, silkworm cocoon-shaped, rhombohedral, rod-shaped, hollow bamboo shoot-shaped, dead tree trunk-shaped, bunchy, cactus-shaped, petal-shaped, cockscomb-shaped or nanometer rods, or has a hemispheric shape self-assembled through nanometer rods. The invention also discloses a preparation method of the composite material. Calcium carbonate utilized in the invention has abundant morphologies, and has a large contact area with a matrix, so the organic and inorganic endophilicity in the composite material is increased, and simultaneously calcium carbonate can ...

Antifouling cleaning mask

Disclosed is an antifouling cleaning mask which facilitates cleaning of vomitus. The antifouling cleaning mask comprises a mask face body, a dirt collecting bag, a collecting bag sealing rope, a non-woven inner lining, a mask binding band, a nose bridge forming strip and a nostril matching band. The antifouling cleaning mask is characterized in that the dirt collecting bag is hidden in the mask face body, and the sealing rope is arranged in a bag opening of the dirt collecting bag. Passengers and navigation operators who vomit due to motion sickness outbreak caused by vessel and vehicle bumping do not need others' help, do not need temporarily look for dirt bags and can timely collect and clean the vomitus themselves, and the surrounding environment is not polluted.

Preparation method of electromagnetic composite hollow microspheres

The invention provides a preparation method of electromagnetic composite hollow microspheres, relates to a preparation method of a composite hollow material and aims to solve the problems of poor conductivity, high density and high falling possibility of magnetic particles of the existing composite hollow material. The preparation method comprises the following steps: 1, preparing polystyrene microspheres; 2, dispersing the polystyrene microspheres in concentrated sulfuric acid, and sulfonating; 3, preparing a magnetic Fe3O4 nano particle suspension; 4, adding the sulfonic-group-containing SPS microspheres and the Fe3O4 nano particle suspension into a water solution; 5, adding ethanol and ammonia water, and dropwisely adding ethyl orthosilicate; 6, adding into a PVP-containing ethanol solution, and stirring; and 7, mixing an aniline solution with the PVP modified magnetic microspheres, dropwisely adding ammonium persulfate, drying, adding N,N-dimethylformamide, and soaking. For the prepared ...

Replica Cascode Bias Voltage-Controlled Oscillators

Embodiments relate to a voltage oscillator (VCO) that uses a replica bias circuit to generate a cascode bias voltage. The VCO generate an output periodic signal having a frequency and phase that is less or not susceptible to voltage swings by using a bias voltage generated in a replica bias circuit that replicates a voltage-to-current converter in the VOC. The bias voltage is generated and regulated according to a power supply voltage that supplies power to the VCO to account for voltage variations in the power supply voltage. 1. A voltage oscillator comprising:a voltage-to-current converter configured to generate a control current responsive to receiving a control voltage, the voltage-to-current converter comprising a first transistor and a second transistor, a drain of the first transistor coupled to a source of the second transistor and a gate of the second transistor biased by a bias voltage;a current controlled oscillator coupled to the voltage-to-current converter to receive the control current and to generate a periodic output signal having a frequency corresponding to the control current; anda bias voltage generation circuit coupled to the voltage-to-current converter, the bias voltage generation circuit comprising a replica bias circuit configured to generate a replica voltage corresponding to a voltage at the source of the second transistor.2. The voltage oscillator of claim 1 , wherein the bias voltage generation circuit further comprises an amplifier coupled to replica bias circuit to receive the output voltage and a reference voltage claim 1 , the amplifier configured to generate the bias voltage representing an amplified difference between the replica voltage and the reference voltage.3. The voltage oscillator of claim 2 , wherein the reference voltage equals to the replica voltage.4. The voltage oscillator of claim 1 , wherein the replica bias circuit comprises a third transistor and a fourth transistor coupled to the third transistor claim 1 , a gate ...

Impeller for water pump

A present invention's object is to maintain a discharge performance by making a discharge flow rate constant in a low rotation region of an engine rotation speed and to reduce the discharge flow rate in a high rotation region. The present invention consists of a housing case, an impeller base provided with plural holes and plural elliptical elongated holes, a vane body provided with a rotary shaft on an inner peripheral side and a rocking shaft on an outer peripheral side, a plate cam in which an elongated groove is formed on an outer peripheral side of a disc portion and a single torsion spring. The spring and the plate cam are housed in the housing case and the impeller base. The rotary shaft is inserted rotatably into the holes, and the rocking shaft is movably inserted into the elliptical elongated holes and the elongated groove.

High-efficiency mppt control strategy applicable to photovoltaic system

The invention relates to a high-efficiency mppt control strategy applicable to a photovoltaic system. By the high-efficiency mppt control strategy, the output voltage of a photovoltaic battery can be adjusted dynamically in real time and maximum power output of the photovoltaic system can be realized. The high-efficiency mppt control strategy has the beneficial effects that the requirements of the system on precision and speed are taken into consideration by adopting a variable step size perturbation and observation method control method.

PHASE TRACKING FOR CLOCK AND DATA RECOVERY

Clock and data recovery (CDR) systems for aligning a local clock signal to an incoming data signal to extract correct timing information from the incoming data signal are provided. A phase detector receives the local clock signal and the incoming data signal and generates an output phase error signal to indicate whether the local clock signal is leading or lagging the incoming data signal. The phase detector includes a bang-bang phase detector and a phase difference con roller. The output phase error signal is suitable for aligning the local clock signal to the incoming data signal. 1. A clock and data recovery device for aligning a local clock signal to an incoming data signal , the device comprising:a bang-bang phase detector (BBPD) to receive the incoming data signal and the local clock signal and to perform 2× oversampling of the data signal using the local clock signal and further to generate an interim phase error signal based on three of the 2× oversamples, the interim phase error signal indicating whether the local clock signal leads or lags the input data signal if the local clock signal is within 0.0-0.5 UI of the input data signal, wherein 1 UI (unit interval) is a period of the input data signal;a phase error interval detector to determine whether the local clock signal is within 0.5-1.0 UI of the input data signal; anda polarity controller coupled to the BBPD and the phase error interval detector, to generate an output phase error signal by reversing a polarity of the interim phase error signal if the local clock signal is within 0.5-1.0 UI of the input data signal, wherein the output phase error signal is suitable for aligning the local clock signal to the data signal.2. The clock and data recovery device of claim 1 , wherein the output phase error signal comprises a phase down signal indicating whether the local clock signal is lagging the data signal and a phase up signal indicating whether the local clock signal is leading the data signal.30121. The ...

Video verification code advertising system

The invention discloses a video verification code advertising system. A verification code is combined with video advertisement, the video advertisement is played in the verification code, and a characteristic of the verification code that the verification code must be input is utilized. By embedding the video advertisement with verification information in the existing verification code area, users can conduct next step of operation only when the input verification information is correct. The video verification code advertising system uses the characteristic of the verification code that the verification code must be input and combines the video advertisement, problems in the existing verification code of being single, easy to break, poor in user experience and the like are solved, simultaneously problems of the existing computer network media advertisement of being low in arrival rate, attention rate, memory rate and the like are greatly solved, and problems that the advertisement is shielded ...

Class I triterpenoid, preparation method and application thereof

The invention relates to a compound obtained from anemone raddeana regel of Chinese medicine herb, anemone raddeana regel, and a preparation method and an application thereof. The compound comprises a triterpenoid and a pharmaceutically acceptable salt of the triterpenoid. The invention relates to the preparation method and a pharmaceutical composition of the compound as well as the application of the compound in the preparation of anti-cancer drugs, in particular for treating cancers such as leukemia, lung cancer, colon cancer, liver cancer, sarcoma and the like.

Pitch coke rotary kiln furnace lining refractory castable, composite precast block and preparation method

The invention relates to a refractory material, and relates to a series refractory castable used for a pitch coke rotary kiln furnace lining, the rotary kiln furnace lining is a calcination section work lining and a preheating section work lining, the refractory castable is a heavy castable which comprises 2-8% of pure calcium aluminate cement, 2-8% of silicon powder, 2-8% of alumina micro powder and the balance of refractory aggregate. A composite precast block is made by the refractory castable used for the pitch coke rotary kiln furnace lining, which is characterized by comprising a work lining castable and an insulation lining castable. A preparation method of the precast block is characterized in that the heavy castable and the light castable are casted in order in order along the thickness direction, and then hardened and placed into a kiln for roasting. The pitch coke rotary kiln furnace lining refractory castable and the composite precast block are capable of prolonging the service ...

Resonance suppressing device for multi-inverter grid-connected system

The invention discloses a resonance suppressing device for a multi-inverter grid-connected system. The resonance suppressing device for the multi-inverter grid-connected system comprises a resonance information extraction device and a centralized passive resonance suppressing device, wherein the input end of the resonance information extraction device is connected with a common point of the multi-inverter grid-connected system, the output end of the resonance information extraction device is connected with the input end of the centralized passive resonance suppressing device, and the output end of the centralized passive resonance suppressing device is connected with the common point of the multi-inverter grid-connected system. According to the resonance suppressing device for the multi-inverter grid-connected system, the damping of the multi-inverter grid-connected system is improved through the centralized passive resonance suppressing device, the purpose that the system resonance phenomenon ...

Stable kiln liner of asphalt rotary kiln

The invention relates to an asphalt rotary kiln, in particular to a stable kiln liner of an asphalt rotary kiln. The stable kiln liner is divided into a part from a kiln front cover to a transition section and a part from the transition section to a kiln end. A liner of the part from the kiln front cover to the transition section adopts a double-layer precast block brick mode, a heat preservation layer is made of light pouring materials, and a working layer is made of ultra-low cement combined with high-purity corundum-mullite pouring materials. The kiln liner adopts four fixed precast blocks which are distributed at 360 degrees, and a precast block brick is built between every two fixed precast blocks in a welding mode. The part from the transition section to the kiln end adopts a mode combining double-layer precast block bricks and pouring materials, a heat preservation layer is made of light pouring materials, a working layer is made of ultra-low cement combined with high-purity corundum-mullite ...

Anti-depositing citric acid chemical cleaning fluid

The invention discloses an anti-depositing citric acid chemical cleaning fluid. An anti-depositing agent PPA is added into a citric acid chemical cleaning fluid formula and accounts for 0.3-2% of the total mass of the anti-depositing citric acid chemical cleaning fluid; the anti-depositing agent PPA is an organic mixture and consists of 10%-30% of a complexing agent, 5%-10% of a surfactant and the balance of water; the complexing agent is one or more then one of gluconic acid, tartaric acid, polyacrylic acid, (2-hydroxyethyl)ethylenediamine-N, N', N'-triacetic acid, iminodiacetic acid and ethylene diamine tetra (methylene phosphonic acid) sodium, and if the complexing agent is a mixture, the ingredients in the mixture are in an arbitrary ratio; and the surfactant is one or more than one of primary alcobol ethoxylate, sodium diethylhexyl sulfosuccinate and sodium diethylhexyl sulfosuccinate, an if the surfactant is a mixture, the ingredients in the mixture an arbitrary ratio. The cleaning ...

Second query term determined to be related to first query term based on natural searching results

The invention provides a method and device for determining a second query term related to a first query term based on natural searching results. The method comprises the first step of obtaining the natural searching results corresponding to the first query term inputted by a user and the natural searching results corresponding to one or more candidate query terms respectively, the second step of determining the relevancy between the first query term and the one or more candidate query terms respectively according to check processing of the natural searching results corresponding to the first query term and the one or more candidate query terms, and the third step of determining the second query term related to the first query term from the one or more candidate query terms according to the relevancy. Compared with the prior art, the relevancy between the second query term and the first query term inputted by the user is guaranteed, furthermore, the relevancy between the displaying results ...

Equipment-independence medical information acquisition midware device and design method thereof

The invention discloses an equipment-independence medical information acquisition midware device and a design method. The equipment-independence medical information acquisition midware device consists of an information sensing unit, an information storage unit, an information processing unit and a service providing unit. The equipment-independence medical information acquisition midware device is used in a heterogeneous network medical application system, a sensor convergence unit uploads data which are monitored by sensors through the network to the information sensing unit of the device in a wireless communication manner, the information storage unit stores the data, the information processing unit analyzes the acquired data and unifies and converts data formats, and the information service providing unit provides the data to the service application system and transmits to an information exchange gateway simultaneously. The equipment-independence medical information acquisition midware ...

Submersible axial-flow pump with inbuilt impeller

The invention relates to a submersible axial-flow pump with an inbuilt impeller. The submersible axial-flow pump comprises a water suction chamber, an impeller hub and a water discharge chamber that are all coaxially communicated, and further comprises a motor rotor and a motor stator, wherein the motor rotor is fixedly arranged on the outer periphery of an impeller shell, one ends of more than three blades are uniformly connected onto the inner periphery of the impeller shell, the other ends of the blades are respectively connected with the impeller hub so as to form an impeller, the impeller is positioned in the middle of the motor rotor so as to enable the motor rotor and the impeller to be integrated into a whole; the motor stator is arranged outside the motor rotor in a sleeving manner, so that a water filling type submersible motor is formed. According to the invention, the axial length of the submersible axial-flow pump is greatly shortened, so that the structure is compact; the ...

Surgical debridement vehicle

The invention relates to a surgical debridement vehicle for cleaning a wound in an surgical operation, which comprises a rectangular vehicle body with three layers of commodity shelves, an operation illuminating lamp and a shower head faucet, wherein a water tank is arranged on the commodity shelf on the first layer to form a debridement platform; the middle part of the water tank is of an arc sunk structure; the water tank at the arc sunk position is provided with a plurality of concave sewer holes; the operation illuminating lamp is arranged on the commodity shelf on the first layer; and the shower head faucet is arranged on the vehicle body. Due to the design of matching of the water tank and the shower head faucet in the invention, the probability of sewage splashing is reduced and the pollution to the surrounding environment is effectively avoided. Meanwhile, under the auxiliary action of the operation illuminating lamp, the injury state of the wound can be clearly observed and the ...

Chemical cleaning agent for superheater heat exchange pipe of station boiler

The invention relates to a chemical cleaning agent of a superheater heat exchange pipe of a station boiler, which comprises the components by mass percent: 1.0-50.0% of MAC, 0.1-0.5wt% of corrosion inhibitor, 0.05-1.5wt% of reducing agent, 0.05-0.2wt% of surfactant and de-mineralized water, wherein the MAC is a key component, and the other components are auxiliary components. The process condition is to control pH at 1.0-7.0. The cleaning formula has an excellent dissolving and dispersing effect on scale of various superheater heat exchange pipes, and simultaneously can control the material corrosion within a safety range and standard set value. The chemical cleaning agent is suitable for chemical cleaning of superheater heat exchange pipes of various station boilers, boilers and other equipment.

Noodle maker extruding safely

A noodle maker operating safely comprises a base, a stirring cup connected with the base, and an upper cover covering the stirring cup, and is further provided with a stirring component and a noodle extruding component, wherein the stirring component comprises a stirring rod arranged in the stirring cup; and the noodle extruding component comprises a noodle extruding cylinder with a noodle inlet, a screw rod arranged in the noodle extruding cylinder, and an end cover closing a noodle outlet of the noodle extruding cylinder and forming a forming port. The noodle maker is characterized in that the screw rod comprises a screw rod body, threads formed on the surface of the screw rod body, and a safety protection structure arranged at the front end of the screw rod; the rotating speed of the screw rod is 50-70rpm in a stirring stage, and 40-65rpm in a noodle outlet stage; and the rotating directions of the screw rod in the noodle outlet stage and the stirring stage are opposite. The adopted ...

Desulfurization chimney anticorrosive paint and preparation method thereof

The invention provides a desulfurization chimney anticorrosive paint and a preparation method of the desulfurization chimney anticorrosive paint. The desulfurization chimney anticorrosive paint comprises a first component formed by dissolving, dispersing and mixing fluoroelastomer, a solvent, padding and an assistant according to certain proportion and a second component formed by mixing a solidification agent and the solvent according to certain proportion. The first component and the second component are stirred and mixed according to certain proportion for 10min-30min to conduct painting construction. The desulfurization chimney anticorrosive paint has the advantages of excellent elasticity, adhesive force, strong acid strong base corrosion resistance, thermostability aging performance, high/low temperature change resistance and wear-resisting property, and can meet desulfurization chimney anticorrosive requirements under various operation conditions on the premise of guaranteeing construction ...

WIDEBAND ADAPTIVE BIAS CIRCUITS FOR POWER AMPLIFIERS

Methods and apparatus for providing adaptive biasing to power amplifiers. Adaptive bias circuits are configured to provide sharp turn on and/or current clamping to improve the efficiency of a power amplifier over a wide input signal bandwidth. Sharp turn on may be achieved using a subtraction technique to subtract outputs from multiple detectors. Clamping may be achieved using MOSFET device characteristics to pull the device from the triode region into the saturation, subtraction techniques to subtract the outputs from multiple detectors, and/or by using circuit devices, such as diodes.

Downdraught submersible electric pump

The invention relates to a downdraught submersible electric pump which comprises a submersible pump and a submersible motor and is of a lower-motor-and-upper-pump structure, wherein the submersible pump and the submersible motor are coaxial. A rotor shaft of the motor extends to the exterior of a suction hood, a guide blade cylinder and an impeller are sleeved on the rotor shaft extending outward, the impeller is positioned below the guide blade cylinder, the guide blade cylinder is of a reverse-cone-frustum shape and comprises a clamping pipe formed by an inner pipe and an outer pipe. More than three guide blades are connected in a cavity between the inner pipe and the outer pipe in an evenly distributed mode, the end with a large diameter of the inner pipe is connected with the lower end of a lower guiding bearing pedestal of the submersible motor, the end with a large diameter of the outer pipe is connected with the lower end of the suction hood, the end with a small diameter of the ...

Processing process of titanium alloy ring groove rivet with big length-to-diameter ratio

The invention relates to a processing process of a ring groove rivet, and in particular relates to the processing process of a titanium alloy ring groove rivet with a big length-to-diameter ratio. The processing process belongs to the technical field of a ring groove rivet processing process. The processing process of the titanium alloy ring groove rivet with the big length-to-diameter ratio is characterized in that process ring grooves, a broken neck groove, a work rod part and a head of a blank after grinding are sequentially formed by disposable lathing molding by adopting a numerically controlled lathe. In the processing process, the high precision of ring groove processing is realized by utilizing the high precision of the lathe, the efficient processing is realized by utilizing the numerically controlled automatic fast feeding, the excircle precision of the ring groove rivet with the big length-to-diameter ratio, processed by the process, is high, and the surface roughness and the ...

Echo Cancellation for High Speed Full Duplex Data Transmissions

Systems, devices and methods for analog echo cancellation for high speed full duplex data transmissions, which include a first set of differential nodes to receive reception data and transmission data, a second set of differential nodes to receive the transmission data, and a subtraction circuit to receive data from the first set of differential nodes and data from the second set of differential nodes. The subtraction circuit includes a plurality of capacitors to receive data from each of the first and second sets differential nodes, and a termination circuit for providing DC termination voltage to subtract the data of the second set of differential nodes from the data of the first set of differential nodes to eliminate echo from the reception data received at the first set differential nodes.

Placement of Stabilizers, Standoffs, and Rollers on a Downhole Tool String

A manufacturing system that manufactures a downhole tool string, which includes a model that describes relationship between properties of the downhole tool string, properties of a borehole, properties of a formation, and properties of a mud cake formed on a surface of the borehole and a design device that iteratively determines contact parameters that describe one or more contact points expected between the downhole tool string and the mud cake based at least in part on the model, in which the contact parameters comprise contact force expected at each of the contact points, adjusts the properties of the downhole tool string to add a spacer at one of the contact points associated with highest contact force, and indicates location, type, or both of the spacer to enable the manufacturing system to attach the spacer to the downhole tool string before deployment of the downhole tool string in the borehole. 1. A manufacturing system used to manufacture a downhole tool string configured to be deployed in a borehole formed in a sub-surface formation , comprising:a model configured to describe relationship between properties of the downhole tool string, properties of the borehole, properties of the sub-surface formation, and properties of mud cake formed on a surface of the borehole; and iteratively determine contact parameters that describe one or more contact points expected between the downhole tool string and the mud cake based at least in part on the model, wherein the contact parameters comprise contact force expected at each of the contact points;', 'adjust the properties of the downhole tool string to add a spacer at one of the contact points associated with highest contact force; and', 'indicate location, type, or both of the spacer to enable the manufacturing system to attach the spacer to the downhole tool string before deployment of the downhole tool string in the borehole., 'a design device configured to2. The manufacturing system of claim 1 , wherein the design ...

Base station power saving method and device thereof

The invention discloses a base station power saving method and a device thereof. The method comprises the following steps of doing statistics of voice traffic and data traffic in a predetermined period to obtain voice service statistics data and data service statistics data, establishing a first trend curve of voice service and a second trend curve of data service respectively according to the voice service statistics data and data service statistics data, and carrying out power saving adjustment on the output voltage of the base station according to the first trend curve and the second trend curve. Through the method and the device, while carrying out a power saving operation, inappropriate node processing and serious user access congestion are avoided, and the bit error rate is reduced.

Glycerol monolaurate microcapsule as well as preparation method and application of glycerol monolaurate microcapsule

The invention discloses a glycerol monolaurate microcapsule as well as a preparation method and an application of the glycerol monolaurate microcapsule. The preparation method comprises the following steps that: the glycerol monolaurate and emulsifying agents are dissolved into water being 60 to 70 DEG C to obtain solution A; wall materials are dissolved into the water being 60 to 70 DEG C to obtain solution B; the solution A and the solution B are mixed when the solution A and the solution B are still hot, stirring is carried out, and emulsion is obtained; and the emulsion is subjected to homogenizing and spray drying to obtain the glycerol monolaurate microcapsule, wherein the emulsifying agents are at least one kind of materials from sucrose ester, granulesten and fatty acid monoglyceride; and the wall materials are a mixture of maltodextrin and high-molecular compounds. The method provided by the invention is simple and practical, the controllability is strong, and the microencapsulation ...

Verification code method based on user identification

The invention discloses a verification code method based on user identification. The method is that contents input by a user are not figures, letters and single combination of the figures and the letters but dynamic and identifiable verification codes, and the user inputs the identifiable verification codes according to prompt message. The verification code method greatly increases resolving difficulties of machine character recognition and greatly improves safety of a network. The verification codes based on the user identification are distinct and discernible and improve user experience.

Calibration for Echo Cancellation in a Full Duplex Communication System

A method that calibrates a device for echo cancellation and a device with calibration for echo cancellation are provided. Devices may be calibrated such that the echo residual error is less than a threshold determined by the calibration accuracy. Non-ideal factors such as mismatch may be eliminated during calibration. 1. A device for full duplex communication over a channel , comprising:a driver circuit configured to generate a reference signal;a replica driver circuit configured to generate a calibration signal; and determine a first reference voltage,', 'adjust an amplitude of the calibration signal linearly,', 'record a first amplitude and a second amplitude when a first difference between the amplitude of the calibration signal and an amplitude of the reference signal is equal to the first reference voltage, and', 'determine a calibration amplitude by averaging the first amplitude and the second amplitude., 'a calibration circuit coupled to the driver circuit and the replica driver circuit and configured to2. The device of claim 1 , wherein the calibration module circuit is further configured to:determine a second reference voltage,adjust a transition time of the calibration signal linearly,record a first transition time and a second transition time when a second difference between the amplitude of the calibration signal and the amplitude of the reference signal is equal to the second reference voltage, anddetermine a calibration transition time by averaging the first transition time and the second transition time.3. The device of claim 2 , wherein the calibration circuit comprises a digital-to-analog converter configured to generate the first reference voltage and the second reference voltage claim 2 , and a comparator circuit configured to compare the difference of the calibration signal and the reference signal to the first reference voltage or the second reference voltage.4. The device of claim 1 , wherein the calibration circuit determines that the first ...

PCB (printed circuit board) packaging architecture method

The invention discloses a PCB (printed circuit board) packaging architecture method, which includes the steps: setting up a logic symbol in a logic symbol library, wherein the logic symbol comprises pins and mounting holes of an element and an auxiliary component thereof; setting up a traditional packaging symbol of the element, setting up an auxiliary packaging symbol according to the structural characteristics of the auxiliary component of the element, and combining the traditional packaging symbol and the auxiliary packaging symbol into integrated package or associating the traditional packaging symbol with the auxiliary packaging symbol into a combined packaging symbol; and mapping the logic symbol and the corresponding integrated package or combined package, and storing the integrated package or combined package into a PCB packaging bank for integral calling or combination calling. Using the PCB packaging architecture method can improve operating efficiency, reduce repetitive operations ...

Surface modification and functionalization method of hollow glass microbeads

The invention relates to a surface modification and functionalization method of hollow glass microbeads. The surface modification and functionalization method mainly solves the problem that existing hollow glass microbeads are low in surface activity and poor in functionality. The preparation method comprises respectively preparing modified polystyrene (MPS) hollow glass microbeads and phenyltrimethoxysilane-modified hollow glass microbeads, further processing the MPS hollow glass microbeads to obtain an intermediate product, adding the phenyltrimethoxysilane-modified hollow glass microbeads and the intermediate product into concentrated sulfuric acid, reacting for 4-10h with stirring at 30-50 DEG C, and obtaining modified hollow glass microbeads; and adding the modified hollow glass microbeads into Fe3O4 suspension, and stirring to obtain the functionalized hollow glass microbeads. The modification method improves interfacial interaction between the hollow glass microbeads and functional ...

System used for detecting gas in transformer insulating oil

The invention discloses a system used for detecting gas in transformer insulating oil, and belongs to the field of electrical equipment. The system used for detecting gas in transformer insulating oil comprises: a light source module, a chopper module, a photoacoustic cell module, a signal processing module, and a controller module which are connected by signals. The chopper module comprises a chopper; the chopper comprises a motor drive circuit, a motor, a raster encoder code wheel, a Hall sensor and a display screen; the motor drive circuit receives control instruction of the controller module by serial port communication, and control the motor to rotate according to the control instruction; the raster encoder code wheel is connected with a front shaft of the motor; and the Hall sensor is connected with a back shaft of the motor. A combination structure formed by a semiconductor laser and an optical filter is applied in the light source module; a resonant photoacoustic cell structure ...

Sodium fusidate crystal and preparation method thereof

The invention relates to a sodium fusidate crystal and a preparation method thereof. The X-ray powder diffraction spectrum characteristic peaks of the sodium fusidate crystal newly provided by the invention, represented by 2theta+/-0.2 degrees, are at 6.960, 7.117, 8.180, 8.355, 11.895, 14.460, 15.176, 16.389, 16.574, 24.837, 28.967 and 36.344. The preparation method comprises the following steps of: 1) dissolving fusidic acid in a low alcohol solution to obtain a sodium fusidate solution; 2) feeding an ethyl acetate solution into the sodium fusidate solution to crystallize sodium fusidate, and collecting a solid phase; and 3) drying the solid phase, thus obtaining a sodium fusidate crystal. The sodium fusidate crystal provided by the invention has the advantages of being glittering and translucent in appearance, uniform in granule, stable in crystal form, favorable for sub-package and storage, and the like. The method provided by the invention has the advantages that the prepared sodium ...

Floor tile type public place indicator lamp

The invention discloses a floor tile type public place indicator lamp, which consists of a case, pressure springs, a cover plate, a storage battery, a pressure sensor, a charging and discharging controller, a change-over switch, an illuminating lamp and a control module, wherein the cover plate is connected with the case through the pressure springs; a projection mask is arranged on the lower surface of the cover plate; the pressure sensor is reliably connected with the cover plate and is electrically connected with the control module; the storage battery, the charging and discharging controller, the change-over switch, the illuminating lamp and the control module are all arranged in the case; the charging and discharging controller and the change-over switch are both electrically connected with the control module; and the storage battery is electrically connected with the illuminating lamp and the charging and discharging controller respectively. The indicator lamp significantly lowers ...

Mizoribine purification method

The invention provides a mizoribine purification method. The mizoribine purification method comprises the following steps of firstly, adding acid to mizoribine fermentation liquor, then adding a flocculating agent, and filtering so as to obtain crude filtrate; then sequentially carrying out decolorization, enrichment and secondary decolorization treatment on the crude filtrate by adopting a macroporous resin column, concentrating secondary decolorized liquor under reduced pressure, cooling and crystallizing so as to obtain mizoribine crude powder; and finally carrying out recrystallization treatment on the obtained mizoribine crude powder so as to obtain mizoribine fine powder. The mizoribine purification method has the advantages that the purity of the mizoribine can be substantially improved, and the yield is high. The obtained mizoribine fine powder is good in stability, uniform in particles and easy to subpackage.

Power supply method for super computer

The invention discloses a power supply method for a super computer. The method comprises converting the AC (alternating current) utility power from a front-stage power supply to 12-V DC (direct current) power; transmitting the 12-V DC power to a final-stage power supply through the back plate of a cabinet and a rear-stage DC bus; converting the 12-V DC voltage to various kinds of desired DC low voltage for supplying power to chips by the final-stage power supply mounted near a data processing chip; and connecting a backup battery pack from a DC input interface of the front-stage power supply. The power supply method provided by the invention is simple and compact in structure and high in reliability, and can reduce the size of power supply devices, lower the cost and greatly improve the power supply efficiency.

Wideband highly-linear low output impedance D2S buffer circuit

A wideband highly-linear buffer circuit exhibiting a low output impedance comprises a first PFET (PFET 1 ), a second PFET (PFET 2 ), a first NFET (NFET 1 ), and a second NFET (NFET 2 ). Sources of PFET 1 and PFET 2 are coupled to VDD. PFET 1 's drain is coupled to an output lead. PFET 2 acts as a current source. NFET 1 's drain is coupled to PFET 2 's drain and to PFET 1 's gate. NFET 1 's source is coupled to the output lead. NFET 2 's source is coupled to ground. NFET 2 's drain is coupled to NFET 1 's source and to the output lead. NFET 1 's gate is AC coupled to a first input lead. In a single-ended input example, NFET 2 's gate is AC coupled NFET 1 's drain. In a differential input example, NFET 2 's gate is AC coupled to a second input lead. In another differential input example, PFET 2 is not just a current source, but rather PFET 2 's gate is AC coupled to the first input lead.

Preparation process of aromatic polyoxyalkyl quaternary ammonium compound

The invention provides a preparation process of an aromatic polyoxyalkyl quaternary ammonium compound, which comprises the following steps: 1) phenol reacts with dihaloalkyl ether in the presence of a phase transfer catalyst to obtain aromatic polyoxyalkyl halide; 2) aromatic polyoxyalkyl halide reacts with an aminating reagent in the presence of a phase transfer catalyst to obtain aromatic polyoxyalkyl amide; and 3) aromatic polyoxyalkyl amide reacts with an alkylating agent to obtain the aromatic polyoxyalkyl quaternary ammonium compound, wherein R1 is H or C1-C16 alkyl which is located at ortho, meta or para position, n is an integer of 2-6, R2 is H or C1-C16 alkyl, R3 is H or C1-C16 alkyl, R4 is H or C1-C16 alkyl, X1 is Br or Cl, and X is Cl, Br or I. The preparation process provided by the invention has the advantages of lower reaction temperature and pressure, short reaction time and low cost, and is simple to operate; the total recovery can reach 75%; and the product is easy to separate ...

Implementation method of dynamic simulation process of natural gas pipeline network conveying system

The invention discloses an implementation method of a dynamic simulation process of a natural gas pipeline network conveying system and relates to the technical field of pipeline systems. The method comprises the following steps of: separating hydraulic power from a heating power system by a 'leapfrog' strategy; dealing with the instability of the heating power system by a 'windward' format; and solving by a linear system of equations to obtain the solved result of a dynamic simulation numerical model of the natural gas pipeline network conveying system. The method provided by the invention is steady in coupled solving of hydraulic power and heating power systems, short in calculation time and high in solving efficiency.

Controlling a hydraulic pressure of a fluid transmission

A control device for controlling a hydraulic pressure of a fluid transmission includes a pressure sensor for detecting actual pressure values of the hydraulic pressure, an electronic control unit for generating a control signal as a function of the actual pressure values detected by the pressure sensor and a reference pressure signal delivered to the control unit, a power switch controlled by the control signal and a solenoid valve actuated by the power switch for generating the hydraulic pressure. The control device is configured as a compact electromagnetic unit. The electronic control unit is respectively connected to the pressure sensor and to the power switch by a direct electrical connection. A method for controlling a hydraulic pressure of a fluid transmission is also provided.

Calibration for echo cancellation in a full duplex communication system

A method that calibrates a device for echo cancellation and a device with calibration for echo cancellation are provided. Devices may be calibrated such that the echo residual error is less than a threshold determined by the calibration accuracy. Non-ideal factors such as mismatch may be eliminated during calibration.

Method for manufacturing closed impeller

The present invention provides a method for manufacturing a closed impeller that has a simple configuration and enables fusion in a very accurate position. The method includes: forming a frustum-shaped front plate and a disk-shaped base plate formed therebelow, upper surfaces of a plurality of unit impeller blade plates made from a synthetic resin extending in radial directions which are formed as impeller blade tip surfaces, with sharp-pointed ridge-like protrusions having an acute upper end and a width less than a width of the impeller blade tip surface being integrally formed on the impeller blade tip surfaces. In the method, an inner surface of the front plate and the plurality of impeller blade tip surfaces are formed as parts of conical surfaces and formed so that the cone apex angles of the two conical surfaces are equal to each other. Then, the front plate is placed on the impeller blade and the ends of the sharp-pointed ridge-like protrusions and the inner surface of the front ...

Methods and Devices for Data Demodulation

Embodiments of the present disclosure relate to methods and device for receiving PAM data stream. In an embodiment, a method comprises receiving a signal stream modulated with pulse amplitude modulation (PAM) associated with a plurality of bit patterns; determining boundary voltages for the plurality of bit patterns; and calibrating, based on the boundary voltages, a threshold voltage for use in recognition of the plurality of bit patterns. In this way, bit patterns may be accurately recognized based on the calibrated threshold voltage.

Impeller for water pump

A present invention's object is to maintain a discharge performance by making a discharge flow rate constant in a low rotation region of an engine rotation speed and to reduce the discharge flow rate in a high rotation region. The present invention consists of a housing case, an impeller base provided with plural holes and plural elliptical elongated holes, a vane body provided with a rotary shaft on an inner peripheral side and a rocking shaft on an outer peripheral side, a plate cam in which an elongated groove is formed on an outer peripheral side of a disc portion and a single torsion spring. The spring and the plate cam are housed in the housing case and the impeller base. The rotary shaft is inserted rotatably into the holes, and the rocking shaft is movably inserted into the elliptical elongated holes and the elongated groove.

Car chassis and adjusting device thereof

The invention discloses a car chassis and an adjusting device for the car chassis. The adjusting device for the car chassis comprises nuts fixed to the upper end of a shock absorber, lead screws in match with both the rotation of a car frame and the up and down limitation of the car frame, and a guide mechanism for guiding the nuts to move up and down to assemble on the car frame, wherein the lead screws are extended up and down, and matched with the nuts with threads; and the guide mechanism is arranged between the nut and the car frame. According to technical scheme in the invention, the car frame can be lifted relative to the axle by rotating the threads; a thread pair is easy to be produced and processed, and the cost of production is lower. With the performance of self-locking implemented when the lifting angle of the threads is less than the friction angle of the material thereof, the height of the device can be maintained without the continuous supply of high-pressure gas or high-pressure ...

Method and system for achieving advertisement verification code

The invention discloses a method and a system for achieving an advertisement verification code. The method comprises that advertisement information is uploaded, the advertisement and a verification code are combined, and the advertisement verification code is generated; when an advertisement verification code client requests the advertisement verification code, a verification code server sends the advertisement verification code for the advertisement verification code client; when a user inputs the advertisement verification code in a verification code input unit, and submits, and a verification code validation unit of the advertisement verification code server performs a validation matching function. According to the method and the system for achieving the advertisement verification code, breaking difficulty for picture verification code is improved through interactivity, the advertisement is enabled to arrive to the user through the inputting of the advertisement verification code by ...

Multifunctional power source test system

The invention relates to a multifunctional power source test system, which comprises a middle back plate, wherein the front side of the middle back plate is inserted with a plurality of blade type main board sockets, more than one primary power source module socket and more than one fan cooling module socket, the back side of the middle back plate is inserted with a direct current 12V output wiring terminal and an I<2>C signal output socket, the direct current 12V output wiring terminal is used for connecting an electronic load to be used as a test load of a primary power source module, the I<2>C signal output socket is used for connecting a single chip development plate and sending the collected test data to the single chip development board, and the single chip development plate is connected with a computer. The test system has the advantages that multiple test functions are realized, the cost is low, the test efficiency is high, and the like.

Energy-saving control method and device for cabinet

The invention discloses an energy-saving control method and device for a cabinet, which has the following steps: 1) setting a temperature difference threshold value-output voltmeter; 2) detecting the air inlet temperature and the air outlet temperature of the cabinet, so as to obtain the temperature difference of the air inlet temperature and the air outlet temperature; 3) finding the temperature difference threshold value-output voltmeter according to the temperature difference so as to obtain the output voltage; and 4) outputting the output voltage to a cabinet fan. The device includes a temperature collecting unit, a distribution box and a plurality of power distribution units, wherein the distribution box includes an input electric connector, a control processing unit, a voltage regulating unit and a plurality of output electric connectors; and the control processing unit includes a temperature difference computation module, a preset voltage information storage unit and a fan control ...

Amplifier and associated receiver

The invention provides an amplifier and an associated receiver, wherein, the amplifier receives an input signal and provides an output signal in response; the amplifier includes a gain stage, a main branch, an auxiliary branch and a feedback circuit. The gain stage includes an input node and a splitting node, wherein the input node is coupled to the input signal. The main branch includes a first node and an output node of current mode; the first node is coupled to the splitting node, and the main branch is arranged to output the output signal at the output node. The auxiliary branch includes a second node and a feedback node, and the second node is coupled to the splitting node. The feedback circuit is coupled between the feedback node and the input node. The amplifier and the receiver implement a current mode interface so as to realize high-linearity RF chain of the mode interface.

Freeze-dried flour and preparation method thereof

The invention discloses freeze-dried flour and a preparation method thereof. The preparation method mainly comprises the following steps: pretreating wheat and wheat germ; freezing and grinding the wheat, the wheat germ, towel gourd juice, tomato leaves and aloe extract according to certain weight percentage into powder; adding refined salt, edible alkali, tea polyphenol, vitamin C tablets, water and edible gum; and mixing uniformly to obtain the freeze-dried flour. The freeze-dried flour is cheap and readily available; vitamin, towel guard, tomato and aloe with high nutrition are added into the flour for producing the freeze-dried flour; pigment and color fixative are not added during the production; and the produced flour basically maintains the original color and flavor through pretreatment and process parameter adjustment.

Calibration for echo cancellation in a full duplex communication system

A method that calibrates a device for echo cancellation and a device with calibration for echo cancellation are provided. Devices may be calibrated such that the echo residual error is less than a threshold determined by the calibration accuracy. Non-ideal factors such as mismatch may be eliminated during calibration.

Method for building dynamic simulation system of natural gas pipeline network conveying system

The invention discloses a method for building a dynamic simulation system of a natural gas pipeline network conveying system and relates to the technical field of pipeline systems. The method comprises the following steps of: simultaneously building pipe section and non-pipe element mathematical models; executing linear processing after discretization to form a dynamic simulation system linear numerical model which is equivalent in engineering and can be directly solved. The flow of the method comprises the following processes of: building the dynamic simulation mathematical model of the natural gas pipeline network conveying system; carrying out discretization on the dynamic simulation mathematical model of the natural gas pipeline network conveying system; reordering after discretization of each nodal equation; executing linear processing, so as to obtain the dynamic simulation numerical model of the natural gas pipeline network conveying system. The method provided by the invention is ...

Method and equipment for determining spoil loss allowance of developed and constructed projects

The invention provides equipment for determining the spoil loss allowance of developed and constructed projects. The equipment comprises a flow collecting device, a coaming, a rain gauge, a rainfall supporting tube, a rainfall spray nozzle, a pressure regulation controller, a water duct and a water supply device, wherein the flow collecting device is connected with the water outlet of the coaming, and the pressure regulation controller is arranged on the water duct. The method for determining thee spoil loss allowance of developed and constructed projects comprises the following steps: the coaming is filled with spoil of developed and constructed region to form a runoff plot, and the rainfall spray nozzle stimulates rainfall to brush the spoil in the coaming; and the slope runoff is generated along with the prolonging of the rainfall time, and runoff flows in the flow collecting device through the water outlet of the coaming and is collected by the flow collecting device for analysis. The ...

SRAM core cell design with write assist

A static random access memory (SRAM) cell includes a storage unit configured to store a data bit in a storage node. The SRAM cell further includes an access unit coupled to the storage unit. The access unit is configured to transfer current to the storage node when a word line is asserted. The SRAM cell further includes a row header configured to provide current from a power supply when the word line is not asserted, and to not provide current from the power supply when the word line is asserted. The SRAM cell further includes a column header configured to provide current from a power supply when a write column line is not asserted, and to not provide current from the power supply when the write column line is asserted.

Wideband Highly-Linear Low Output Impedance D2S Buffer Circuit

A wideband highly-linear buffer circuit exhibiting a low output impedance comprises a first PFET (PFET), a second PFET (PFET), a first NFET (NFET), and a second NFET (NFET). Sources of PFET and PFET are coupled to VDD. PFET's drain is coupled to an output lead. PFET acts as a current source. NFET's drain is coupled to PFET's drain and to PFET's gate. NFET's source is coupled to the output lead. NFET's source is coupled to ground. NFET's drain is coupled to NFET's source and to the output lead. NFET's gate is AC coupled to a first input lead. In a single-ended input example, NFET's gate is AC coupled NFET's drain. In a differential input example, NFET's gate is AC coupled to a second input lead. In another differential input example, PFET is not just a current source, but rather PFET's gate is AC coupled to the first input lead. 1. A circuit comprising:a first signal transistor having a first terminal, a control terminal, and a second terminal;a current source having a first terminal and a second terminal, wherein the first terminal of the current source is coupled to the first terminal of the first signal transistor, and wherein the second terminal of the current source is coupled to the control terminal of the first signal transistor;a second signal transistor having a first terminal, a control terminal, and a second terminal, wherein the second terminal of the second signal transistor is coupled to the second terminal of the current source, and wherein the first terminal of the second signal transistor is coupled to the second terminal of the first signal transistor;a third signal transistor having a first terminal, a control terminal, and a second terminal, wherein the second terminal of the third signal transistor is coupled to the first terminal of the second signal transistor;a buffer input;a first bias circuit that AC couples the buffer input to the control terminal of the second signal transistor;a second bias circuit that AC couples the second terminal of ...

Method for realizing watermark print by using GDI (Graphics Device Interface) hooking technology

The invention discloses a method for realizing watermark print by using a GDI (Graphics Device Interface) hooking technology. The method comprises the steps of watermark characteristic acquiring, print filter mounting, print operation capturing, print operation analyzing, watermark bitmap generating and watermark drawing. The method is applicable to printer devices of different types; through adopting the GDI hooking technology, watermarks which are set to be texts, pictures and handwritings can be accurately and quickly printed without replacing a drive program of a printer; and meanwhile, the method is independent of an application program initiating a print operation, so that the universality in watermark printing is realized, the efficiency of watermark printing is greatly increased, and an efficient protection means for print behavior authorization and leakage trace is provided.

Method for automatically calibrating touch screen

The invention relates to a method for automatically calibrating a touch screen. The method is characterized in that a reference value of the touch screen is adjusted in a single-end scanning and double-end scanning combined mode, so that interference of external noise is reduced to the greatest extent, and the purpose of automatically calibrating the touch screen is achieved. The method is simple and effective, stability of the touch screen during operation can be guaranteed even under the condition with the interference of the external noise, so that error probability is reduced.

Device for automatically detecting electronic lock

The invention discloses a device for automatically detecting an electronic lock. The device for automatically detecting the electronic lock comprises a lock fixing assembly and a corresponding clamp on the lock fixing assembly, a lock moving assembly and a corresponding clamp on the lock moving assembly, upper and lower layer translation sliding rails, a working platform, a first driver part, a second driver part, a limit sensor, and a controller, wherein the lock fixing assembly is arranged on the working platform; the lock moving assembly is fixed at one end of the upper layer translation sliding rail, which is near the lock fixing assembly; the lower layer translation sliding rail is positioned on the working platform; and the working platform is a horizontal sliding fit structure in the direction from the lock moving assembly to the lock fixing assembly; the first driver part drives the lower layer translation sliding rail to move on the working platform; the second driver part drives ...

Video identifying code cloud technology

The invention relates to a video identifying code cloud technology and implementation thereof. A video segment which contains identifying information and comes from a cloud service side is displayed in an identifying code area, and a user can perform legal authorized operation only when the correct identifying information is input in the video segment by the user and is identified to be successful on the cloud service side. The technology increases the difficulty in cracking the identifying code, effectively improves the anti-attack capability of the identifying code, is convenient to uniformly manage due to the fact that the identifying process is performed on the cloud service side, saves resources, improves the efficiency, improves the user experience, enables the identifying code to be clear and distinguishable, provides visual enjoyment and pleasure to the user, and greatly improves the man-machine interaction capability.

Coumarin compound and preparation method and application thereof

The invention relates to a compound prepared from a Chinese medicine, i.e., rhizoma anemones raddeanae and a preparation method and an application thereof. The compound is a coumarin compound and a pharmaceutically-acceptable salt thereof. The invention relates to a preparation method of the compound, a medicinal composition of the compound and an application of the compound to preparation of an antitumor medicament, in particular to treatment of cancers such as leukemia, lung cancer, carcinoma of colon, liver cancer, sarcoma and the like.

Noodle machine with rapid machining

The invention discloses a noodle machine with rapid machining. The noodle machine comprises a base, a stirring cup connected with the base, and an upper cover covering on the stirring cup, wherein the stirring cup is provided with a stirring component and an extruding component; the stirring component comprises a stirring rod; and the extruding component comprises a screw rod and a feeding barrel in match with the screw rod. The noodle machine is characterized by further comprising a rapid flour feeding structure, wherein the rapid flour feeding structure comprises a flour feeding port arranged in the feeding barrel, and a baffle arranged at the flour feeding port and used for baffling materials so as to enable the materials to enter the flour feeding port. By arranging the baffle and the baffle above the dough feeding port, dough can be effectively baffled and cut, so that the dough can rapidly enter the feeding barrel from the dough feeding port so as to be machined and shaped; and the ...

Automatic identification method and device for super parallel computer system component

The invention discloses an automatic identification method and a device for a super parallel computer system component. The method comprises the processes as follows: 1), the on-line state of the system component is monitored in real time; 2), after the system component accesses a system, an identification register of the system component is read, and the current identification information IDpre is obtained; and at the same time, a correct global exclusive identification ID of the system component is calculated according to a known global exclusive identification of the systems-management controller and an access physical position of the system component; and 3), values of the IDpre and the ID are compared, and if the values are different, the correct global exclusive identification ID is written in the identification register. The device comprises more than one system-management controller, an independent component controller and an identification register located on each system component ...

Efficient and reliable software distribution method for large scale network

The invention provides an efficient and reliable software distribution method for large scale network, which includes a software package is generated through a software installation package program; a tree structure is built; a sending end sends file validation information to a receiving end; a file block is sent, and bandwidth control is performed; abnormal situation and resuming broken downloads in the distribution process are processed; the software package is synthesized at the receiving end, and software is installed at the receiving end; and the sending end confirms sending results. The receiving end is grouped to form the tree-shaped structure, software distribution is performed on nodes in the tree-shaped structure in parallel mode, and the efficient and reliable software distribution method for the large scale network achieves improvement of distribution efficiency, controllable bandwidth, the resuming broken downloads, automatic installation and real-time result feedback, meets ...

Calibration for Echo Cancellation in a Full Duplex Communication System

A method that calibrates a device for echo cancellation and a device with calibration for echo cancellation are provided. Devices may be calibrated such that the echo residual error is less than a threshold determined by the calibration accuracy. Non-ideal factors such as mismatch may be eliminated during calibration.

Power supply system of high-performance computer

The invention discloses a power supply system of a high-performance computer. The power supply system comprises a backboard electrical power package for supplying electricity to a computing unit, and a main board electrical power package. The computing unit comprises a backboard and a plurality of main boards connected to the backboard; the backboard electrical power package comprises two power supply groups; each power supply group comprises four primary power modules; the plurality of main boards are divided into two groups in average, and each group of main boards are powered by one power supply group. The power supply system of the high-performance computer disclosed by the invention has the advantages of simple and compact structure, and convenience in manufacture and processing, improving the power conversion efficiency, reducing the power cost and the like.

Method for improving advertisement memory rate

The invention discloses a method for improving advertisement memory rate. The method is characterized in that advertisements are set up in verification codes, in verification code areas and on the periphery of the verification codes so that the advertisements are transmitted to users simultaneously when the users input basic information and the verification codes, strong attention and memory characteristics brought by must input characteristics of the verification codes are given play to to the maximum extent, and memory rate of the users and advertisement arrival rate are improved. Contents and forms of the advertisements set up in verification codes, in verification code areas and on the periphery of the verification codes are not limited. When the users log in, register, post messages and execute pages with the verification code function, advertisement information is displayed in verification codes, in verification code areas and on the periphery of the verification codes, the advertisement ...

V/F mode and P/Q mode seamless switching control device of PCS (power conservation system) converter

The invention discloses a V/F mode and P/Q mode seamless switching control device of a PCS converter. The V/F mode and P/Q mode seamless switching control device of the PCS converter comprises a current collecting module, a first voltage collecting module, a second voltage collecting module, a reference signal computing module, a phase synchronizing module, a voltage reference signal generating module, a voltage loop regulation module, a current loop regulation module, a power scheduling module, a first switching switch, a second switching switch and a pulse width modulation module. The V/F mode and P/Q mode seamless switching control device of the PCS module achieves seamless switching of the PCS converter from a V/F working mode to a P/Q working mode, avoids any current or voltage overshoot once the switching happens and ensures stable operation of the PCS converter all the time.

Method and system for improving advertisement memory rate

The invention discloses a method and a system for improving advertisement memory rate, wherein, when a web user accesses a webpage or uses a network application, the system provided by the invention will be enabled before the user proceeds next operation, an advertisement as well as information that the user is indicated to input will be displayed in an advertisement display area, the user can only move on to the next step after he or she inputs the information that he or she is indicated by the advertisement display area to input in an input area and submits the information. The system provided by the invention comprises an input system and a verification system, which are different in that the verification system has matching and verifying functions and are used for different situations. With the method and the system, one advertisement behavior can be finished completely only through attention, watching, input and interaction, and next operation can be carried out. This feature greatly ...

Verification code service method and system based on cloud computing

The invention discloses a verification code service method and a system based on cloud computing. Verification code functions of a plurality of websites are provided by the verification code cloud service method and the system which are independent of website servers. The verification code cloud service system comprises a verification code cloud end and a verification code cloud server, wherein the verification code cloud end is used for being embedded into verification code areas of the websites and displaying verification codes, and the verification code cloud server is used for providing a verification code cloud service and comprises a register unit, a storage unit, a verification code generation unit, a verification code pushing unit and a verification code verifying unit. According to the verification code service method and the system based on the cloud computing, the uniform verification code cloud service is provided for the plurality of the websites, unified management is facilitated ...

Cross-layer routing method utilized in cognitive radio cellular network and based on energy optimization and network lifetime

The invention discloses a cross-layer routing method utilized in a cognitive radio cellular network and based on energy optimization and network lifetime, and relates to the cognitive radio field in wireless communication technology. The cross-layer routing method has the advantages that new routing metrics are provided specific to characteristics that various cognitive users in the cognitive radio cellular networks have different dynamic spectrum resources and energy of wireless cognitive nodes is limited, route selection and channel assignment in the cognitive network are considered in a combined manner by the aid of a cross-layer technology, a priority algorithm for the shortest path is modified, the problem that load on individual nodes is excessively high, energy is used up in advance and the individual nodes fail are solved, death time of each node is delayed, the lifetime of the network is prolonged, large quantities of relay nodes can be selected as cognitive nodes owing to large ...

Andrias davidianus rotten claw and rotten tail disease treatment traditional Chinese medicine and preparation method thereof

The invention belongs to the technical field of aquaculture, and particularly relates to andrias davidianus rotten claw and rotten tail disease treatment traditional Chinese medicine capsules, which are prepared from the following traditional Chinese medicine raw materials, by weight, 25-35 parts of common bletilla tuber, 5-9 parts of sanchi, 20-25 parts of christina loosestrife herb, 8-12 parts of cirsium japonicum, 8-12 parts of nux vomica, and 8-12 parts of cowherb seed. The preparation method comprises: weighing the herbs according to the weight part ratio, cleaning, carrying out air drying, respectively crushing, screening with a 200 mesh sieve, taking the powders, uniformly mixing, taking the mixed powder, and preparing into capsules, wherein each capsule is 0.5 g, and is stuffed into a fresh fish block, the obtained fish block is adopted to feed andrias davidianus with symptoms such as rotten claws and rotten tails once a day, the one capsule is adopted one time, a treatment course ...

Shutdown protection device of direct air cooled condenser of thermal power plant

A shutdown protection device of a direct air cooled condenser of a thermal power plant comprises an agent box containing a furnace shutdown protection agent, wherein a heater is installed in the agent box, and the agent box 1 is connected with a steam exhaust main pipe of a steam exhaust device through a dosing pipeline and a control valve installed on the dosing pipeline or is connected with pressure measurement point sampling pipelines on two sides of steam exhaust pipes to achieve shutdown protection dosing operation of the air cooled condenser. Before the agent is added into the steam exhaust pipes, atomization treatment is further required to be performed through an atomizer to ensure the protection agent to be evenly distributed in the steam exhaust pipes. The official dosing pipeline is added on an outlet main pipe of the steam exhaust device or a pressure measurement point on each steam exhaust pipe serves as a temporary dosing pipeline. The protection agent can be added into the ...

Automatic self-aligning thrust bearing for water-filling-type submersible electric pump

The invention relates to an automatic self-aligning thrust bearing for a water-filling-type submersible electric pump. The automatic self-aligning thrust bearing for the water-filling-type submersible electric pump comprises a rotary part and a static part; the rotary part comprises slide plates; the static part comprises thrust bearing seats, thrust bearing chambers, self-aligning retainers and ten fan-shaped thrust bearing blocks; inner circular arc surfaces of the thrust bearing blocks are provided with inner grooves, and outer circular arc surfaces of the thrust bearing blocks are provided with outer grooves; inner holes of the thrust bearing seats are provided with inner flanges which extend upward and turn over inward, and are buckled into the inner grooves of the thrust bearing blocks in a movable matching way; clamping rings are sleeved on the thrust bearing seats; the cross sections of the clamping rings are groove-steel-shaped; one side edges of the clamping rings are fixedly ...

Method for manufacturing closed impeller

The present invention provides a method for manufacturing a closed impeller that has a simple configuration and enables fusion in a very accurate position. The method includes: forming a frustum-shaped front plate and a disk-shaped base plate formed therebelow, upper surfaces of a plurality of unit impeller blade plates made from a synthetic resin extending in radial directions which are formed as impeller blade tip surfaces, with sharp-pointed ridge-like protrusions having an acute upper end and a width less than a width of the impeller blade tip surface being integrally formed on the impeller blade tip surfaces. In the method, an inner surface of the front plate and the plurality of impeller blade tip surfaces are formed as parts of conical surfaces and formed so that the cone apex angles of the two conical surfaces are equal to each other. Then, the front plate is placed on the impeller blade and the ends of the sharp-pointed ridge-like protrusions and the inner surface of the front ...

Electronic Component Testing

A fixture for connecting a printed wiring assembly (PWA) to an acceleration table for subjecting the PWA to highly accelerated stress screen (HASS) testing. The fixture comprises a member and multiple spacers. First openings extend through the member for receiving fasteners to connect the member to the acceleration table such that the member is spaced from the acceleration table. Second openings extend into the member for receiving fasteners to connect the PWA to the member. A third opening extends through the member to expose a substantial portion of a surface of the PWA. Also disclosed is a method comprising selecting a PWA for HASS testing, determining which one of a plurality of predetermined PWA categories includes the selected PWA, and conducting the HASS test on the selected PWA utilizing HASS testing parameters associated with the determined PWA category. 1. An apparatus , comprising: a member; and', a plurality of first openings extend through the member and corresponding ones of the plurality of spacers for receiving first fasteners connecting the member and the plurality of spacers to the acceleration table such that the member is spaced from the acceleration table by the plurality of spacers;', 'a plurality of second openings extend into the member for receiving second fasteners connecting the PWA to the member; and', 'a third opening disposed between ones of the plurality of second openings, wherein the third opening extends through the member and exposes a substantial portion of a surface of the PWA facing the acceleration table., 'a plurality of spacers, wherein], 'a fixture for connecting a printed wiring assembly (PWA) to an acceleration table for subjecting the PWA to highly accelerated stress screen (HASS) testing, wherein the fixture comprises2. The apparatus of wherein the member and the plurality of spacers define a plurality of spaces extending between the acceleration table and the member in a direction that is substantially transverse to the ...

Gain factor report method and grain factor report device

The invention discloses a gain factor report method and a grain factor report device. The gain factor report method comprises carrying out comparison between a remote radio unit (RRU) of a to-be-reported gain factor and a radio frequency link budget gain, an airborne digital computer (ADC) quantization gain and a digital link gain of a preset standard RRU; confirming an imitation fixed gain value of the RRU of the to-be-reported gain factor according to a gain difference value and an imitation gain estimated value of the standard RRU obtained by comparison; and reporting the imitation fixed gain value. According to the gain factor report method and the gain factor report device, a battery backup unit (BBU) is incapable of identifying the type of the RRU, and a signal to noise ratio of an antenna port can be timely and accurately calculated according to a scaling formula of the standard RRU.

Submerged motor

The invention relates to a submerged motor which comprises a stator and a rotor. The improvement is as follows: the rotor has an axial displacement h in the axial direction relatively to the stator, and the axial displacement h enables the motor to produce an axial magnetic pull component F during normal operation to offset part of the axial load or the entire axial load F0. According to the invention, the principle that the stator and the rotor of the motor can be in axial displacement to produce an axial force is ingeniously utilized, so that the stator and the rotor of the submerged motor are designed in an axial displacement manner to produce a proper axial force to offset part of the axial load or the entire axial load of the motor. Therefore, the problems of excessively large axial load and difficulty in balancing the axial force of the submerged motor are solved, on one hand, a bearing of the motor is protected, and on the other hand, the service life of the motor is prolonged; meanwhile ...

Device and method for measuring corroding and cleaning effects on line in chemical cleaning process of power station boiler

The invention relates to a device and a method for measuring the corroding and cleaning effects on line in the chemical cleaning process of a power station boiler. The device comprises one group or a plurality of groups of communicated measuring devices; each measuring device comprises an electrode securing ring and a ring-shaped measuring electrode which is fixed by the electrode securing ring and made by processing and making a boiler tube sample; an insulating sealing gasket is arranged between the cutting surface of each ring-shaped measuring electrode and the corresponding electrode securing ring; each two adjacent groups of measuring devices are connected by a flange connector; a metal ring is sleeved outside each ring-shaped measuring electrode; and the metal ring is connected with the corresponding measuring device by a measuring wire. According to the invention, the measuring electrodes made of actual boiler tubes are adopted and an electrochemical technology is adopted to carry ...

Fruit nutrient flour and preparation method thereof

The invention discloses fruit nutrient flour and a preparation method of the fruit nutrient flour. The preparation method comprises the steps of: pretreating wheat, wheat germs and fruit; then uniformly mixing the pretreated wheat, wheat germs and fruit with refined salt, edible alkali, water and edible gum in certain weight percentage; and finally, obtaining the fruit nutrient flour through processes of low-temperature and low-humidity drying. The fruit nutrient flour prepared by the invention basically keeps the characteristics of original colors and flavors of fruit, is rich in nutritional ingredients such as vitamins and the like, has an excellent color and is a natural food popular with people.

Feed additive and application of feed additive

The invention discloses a feed additive and an application of the feed additive. The feed additive comprises the following ingredients in percentage by weight: 20 to 60 percent of monoglyceride laurate, 10 to 40 percent of calcium propionate and 0 to 50 percent of feed carriers. The feed additive disclosed by the invention is added into feed raw materials, the feed is prepared in a stirring mixing or extruding granulation mode, the growth propagation of mycetes can be effectively inhabited, the storage period of the feed in the damp and hot season is prolonged, and in addition, the effects of inhabiting the bacteria, resisting viruses, reducing the use of antibiotics in the feed, promoting the animal growth and improving the animal survival rate and the disease resistance capability are realized; and meanwhile, the feed additive has the advantages that the cost is low, the process is simple, the operation is convenient, the safety is high, and the feed additive is suitable for practical ...

Input checking type advertisement, charging method and charging system thereof

The invention discloses a novel internet input checking type advertisement, a charging method and a charging system thereof. The problems that existing network advertisements are generally low in arrival rate, low in attention rate, low in interaction rate, low in memory rate, deceptive and the like are solved through the method that a user voluntary input characteristic and network advertisements are combined. The advertisement mainly comprises an advertisement display area, an advertisement input area, a checking subsystem, a charging subsystem and the like, the advertisement is embedded in a proper page and at a proper position on a website, before a website user conducts authorization operation, content prompted in the advertisement display area is required to be input in the advertisement input area, and authorization operation and advertisement charging can be conducted after successful checking by the checking subsystem is conducted. By the aid of manual input of advertisement content ...

Jaspine B, 3-epi Jaspine B triazole derivative as well as preparation method and application thereof

The invention discloses a Jaspine B, 3-epi Jaspine B triazole derivative as well as a preparation method and an application of the derivative, belonging to the field of medicinal chemistry. The structural formula of the derivative is as shown in the specification, wherein n is 6, 7, 8, 9, 11, 13, 15 and 17. The synthesized compound has good anti-tumor activity, a synthesis method is simple and easy to carry out, the yield is high, and optional medicines are provided for development of novel anti-tumor medicines.

Rapid input method and system of browser bookmarks

The invention discloses a rapid input method and a rapid input system of browser bookmarks. The method comprises the steps of storing the name of the bookmark and corresponding bookmark website and quick code by a terminal of the browser when adding the bookmark of the browser; and inquiring matched bookmark website according to the quick code in a command when receiving the command to access the bookmark triggered by a shortcut key and displaying corresponding website according to the bookmark website inquired. The bookmark website can be rapidly opened by way of the shortcut key by means of the invention, thereby bringing convenience to user operation and improving the user experience.

Stone cage check dam used for mountainous area erosion gully control

A stone cage check dam used for mountainous area erosion gully control comprises cement piles. The stone cage check dam is characterized in that a cylindrical cage is formed by a wire net which is formed by galvanized iron wires in a staggered weaving mode, and rock blocks are placed into the cylindrical cage; a gully bottom base is excavated from the center line of a gully bottom downwards, multiple layers of stone cages which are overlapped are horizontally paved inside the base, a layer of stone cage is vertically paved on the upper portion of the base, and all the stone cages are connected through iron wires; a row of cement piles which are embedded into the gully bottom are respectively arranged on the two sides of the multiple layers of stone cages which are horizontally paved, a plurality of stone cage check dams are arranged along the erosion gully, and the distance between every two stone cage check dams satisfies the requirement that the bottom portion of the prior stone cage ...

Method for scanning touch screen

The invention relates to a method for scanning a touch screen. The method is characterized in that a mode of combining double-end scanning with single-end scanning is adopted, a method for successively scanning regions of the touch screen one by one is adopted for single-end scanning, and whether the touch screen is scanned integrally or locally is discussed according to conditions. Accordingly, the scanning time is shortened, calculation is effectively reduced, the execution efficiency is improved to the great extent, the point reporting rate is high, and user experience is smooth.

Method and device used for providing information to be presented

The invention aims to provide a method and device used for providing information to be presented. Searching is carried out according to a first searching sequence from user equipment to acquire one or more searching results corresponding to the first searching sequence; then, one or more pieces of information to be presented are acquired; first relevancy information of each piece of information to be presented and each searching result is calculated to determine second relevancy information of each piece of information to be presented and the first searching sequence; a relevancy information base is built or updated according to the determined second relevancy information of each piece of information to be presented and the first searching sequence; when a second searching sequence is received, searching is carried out in the relevancy information base according to the second searching sequence to determine information, to be presented, corresponding to the second searching sequence.

Pitch coke rotary kiln furnace lining fireproof castable, composite prefabricated section and preparation method

The invention relates to a fireproof material, and relates to a series fireproof castable used for a pitch coke rotary kiln furnace lining, the rotary kiln furnace lining is a calcination section work lining and a preheating section work lining, the fireproof castable is a heavy castable, and the fireproof castable comprises 2-8% of pure calcium aluminate cement, 2-8% of silicon powder, 2-8% of alumina micro powder and the balance of fireproof aggregate. The invention also provides a composite prefabricated section work lining castable and an insulation lining castable prepared by the fireproof castable used for the pitch coke rotary kiln furnace lining, and a metal anchoring member is used for connecting two castables. A preparation method for the prefabricated section is characterized in that the heavy castable and a lightweight castable are casted in order along the thickness direction, and hardened and put into a kiln to be baked. According to the invention, the service life of the ...

AMPLIFIER AND ASSOCIATED RECEIVER

An amplifier receives an input signal with an input node, provides an output signal in response, and includes a main branch and an auxiliary branch. The auxiliary branch is coupled between the input node and a splitting node for input matching of the input node. The main branch, also coupled to the splitting node, has an output node of current mode, and is arranged to output the output signal at the output node. An associated receiver is also disclosed. 1. An amplifier receiving an input signal and providing an output signal in response , comprising:a gain stage comprising an input node and a splitting node, wherein the input node is coupled to the input signal;a main branch comprising a first node and an output node of current mode, the first node being coupled to the splitting node, and the main branch arranged to output the output signal at the output node;an auxiliary branch comprising a second node and a feedback node, the second node being coupled to the splitting node; anda feedback circuit coupled between the feedback node and the input node.2. The amplifier as claimed in claim 1 , wherein a voltage swing at the output node is less than a voltage swing at the feedback node.3. The amplifier as claimed in claim 1 , wherein the main branch is arranged to provide an output impedance at the output node and conduct a current with a load impedance claim 1 , and the output impedance is greater than the load impedance.4. The amplifier as claimed in claim 1 , wherein a voltage gain from the input node to the output node is lower than a voltage gain from the input node to the feedback node.5. The amplifier as claimed in claim 1 , wherein the auxiliary branch is arranged to provide a voltage fluctuation at the input node in response to a first current fluctuation to the splitting node claim 1 , and the gain stage is arranged to drive a second current fluctuation to the splitting node in response to the voltage fluctuation claim 1 , and the second current fluctuation is ...

Card Connector with Buffering Member for Preventing Card From Quickly Ejecting

A card connector includes an insulative housing with a first card receiving space, a number of first contacts extending into the first card receiving space, a push-push mechanism and a stop wall. The push-push mechanism includes a slider, an elastic member for urging the slider and a locking arm fixed to the slider. The locking arm includes a hook for locking a first card and a resilient buffering member protruding forwardly beyond the slider. The stop wall is located adjacent to an insertion opening of the first card receiving space. The stop wall is capable of resisting against the resilient buffering member so as to slow down the first card when the first card is quickly ejected along the card extraction direction. As a result, the first card can be prevented from flying off the card connector.

METHOD AND KIT FOR TREATING A NEURODEGENERATIVE DISEASE

A method and kit for treating a neurodegenerative disease or central nervous system disorder in a subject using a GlyB4 fusion protein is provided, as is a kit containing the same. 1. A method of treating a neurodegenerative disease or central nervous system disorder in a subject comprising administering to the subject in need of treatment an effective amount of GlyB4 fusion protein , wherein the GlyB4 fusion protein penetrates the central nervous system thereby treating the subject's neurodegenerative disease or central nervous system disorder.2. The method of claim 1 , wherein administrating comprises intraventricular claim 1 , intrathecal claim 1 , subcutaneous or intravenous delivery of the GlyB4 fusion protein to the subject.3. The method of claim 1 , wherein the GlyB4 fusion protein is administered by delivering to the subject a cell expressing the fusion protein.4. The method of claim 1 , wherein the GlyB4 fusion protein is administered by delivering to the subject a virus transduced with nucleic acids encoding the fusion protein.5. The method of claim 1 , wherein the neurodegenerative disease or central nervous system disorder is selected from Parkinson's disease claim 1 , Alzheimer's disease claim 1 , Huntington's disease claim 1 , injury claim 1 , multiple sclerosis and stroke.6. The method of claim 1 , further comprising administering a second therapeutic agent to effect treatment of the neurodegenerative disease or central nervous system disorder.7. A kit for the treatment of a neurodegenerative disease or central nervous system disorder comprising GlyB4 fusion protein claim 1 , a cell expressing the GlyB4 fusion protein or a virus transduced with nucleic acids encoding the GlyB4 fusion protein and one or more components used to package claim 1 , sell claim 1 , market claim 1 , deliver claim 1 , and/or administer the GlyB4 fusion protein claim 1 , cell or virus.8. the kit of claim 7 , wherein the GlyB4 fusion protein claim 7 , cell or virus is in ...

STRUCTURE AND FUNCTION OF THE SALICYCLIC ACID BINDING SITES ON HUMAN HMGB1 AND METHODS OF USE THEREOF FOR THE RATIONAL DESIGN OF BOTH SALICYCLIC ACID DERIVATIVES AND OTHER AGENTS THAT ALTER ANIMAL AND PLANT HMGBS ACTIVITIES

Compositions and methods for identifying agents which 1) mimic salicyclic acid binding to human, animal and plant high mobility group box proteins or 2) alter activities of these HMGBs by binding in or around their salicyclic acid-binding sites and agents so identified are disclosed. 1. A method for identifying agents which disrupt binding complexes formed between salicylic acid (SA) or itsderivatives thereof and human high mobility group B1 (HsHMGB1) protein , comprisinga) providing a full length HsHMGB1 protein or protein fragments of them having SA binding sites in complex with SA or derivatives thereof,b) contacting said complex of step a) with said agent, andc) determining whether the agent of step b) displaces said SA or said SA derivative from said binding complex, agents which displace SA or said SA derivative being identified as analogs of SA which disrupt SA-HMGB1 binding complex formation, with the proviso that said agent is not glycyrrhizin.2. The method of performed in a cell free system.3. The method of claim 1 , performed in vitro.4. The method of claim 1 , wherein said SA derivative is selected from the group consisting of 4-azido SA and 3-aminoethyl SA.5. The method of claim 1 , wherein said agent is acetyl-3AESA or amorfrutin B1.6. The method of performed in vivo in a whole animal.7. The method of claim 3 , wherein said disruption is detected using ligand-detected NMR assays.8. The method of claim 3 , wherein said disruption is detected using protein-detected NMR assays.9. The method of claim 1 , performed in silico.10. The method of claim 9 , wherein said method is performed by virtual screening.11. The method of claim 5 , further comprising the step of measuring the effects of said agent on HsHMGB1 activity claim 5 , said activity being selected from the group consisting of DNA binding claim 5 , cytokine/chemokine—inducing activity claim 5 , chemo-attractant activity claim 5 , Cox-2-inducing activity claim 5 , induction of autophagy claim 5 , ...

COLD ROLLING DEVICES AND COLD ROLLED ROTARY SHOULDERED CONNECTION THREADS

A device for cold rolling a thread on a tubular support member of a rotary shouldered thread connection includes obtaining an original root depth of a thread root, cold rolling the thread until a minimum increased root depth tolerance is achieved. 1. A thread cold rolling device , comprising: an equivalent root radius of at least about 0.057 inches;', 'a first and a second wheel angle between the center axis and opposing sides of an outer surface of the wheel tip, wherein the first wheel angle is at least about 20 degrees; and', 'a root depth of at least about 0.012 inches., 'a wheel having a center axis perpendicular to a wheel rotational axis and a wheel tip having an elliptical root profile comprising2. The device of claim 1 , wherein the elliptical root profile of the wheel tip further comprises:a major axis having a semi-major axis length of about 0.050 inches to about 0.055 inches; anda minor axis having a semi-minor axis length of about 0.013 to about 0.020 inches.3. The device of claim 1 , wherein the outer surface of the wheel has a roughness of about 8 to about 32 micro-inches.4. The device of claim 1 , wherein the outer surface of the wheel has a roughness of about 16 micro-inches.5. The device of claim 1 , wherein the first wheel angle and the second wheel angle may be the same or may be different.6. The device of claim 1 , wherein the second wheel angle is about 15 to about 20 degrees.7. The device of claim 1 , wherein the first wheel angle is about 25 to about 29 degrees and the second wheel angle is about 17 to about 20 degrees.8. The device of claim 1 , wherein:the equivalent root radius is about 0.058 inches;the root depth is about 0.014 inches;the first wheel angle is about 28 degrees;a major axis of the elliptical root profile of the wheel tip has a semi-major axis length about 0.052 inches; anda minor axis of the elliptical root profile of the wheel tip has a semi-minor axis length of about 0.016 inches.9. The device of claim 8 , wherein the ...

THREADED CONNECTIONS AND DOWNHOLE TOOLS INCORPORATING THE SAME

A thread structure in accordance to one or more embodiments includes a thread extending helically along a portion of a bit body in spaced thread turns, the thread having a crest extending between a first flank and a second flank and a root extending between the thread turns, the root having a curvature defined by a portion of an ellipse tangentially adjoining the first and second flank at respective flank transition points, the ellipse having a major axis extending parallel to the axis and a minor axis extending perpendicular to the major axis and through a root bottom. 1. A downhole tool , comprising:a body having a longitudinal axis; a crest extending between a first flank and a second flank;', 'a root extending between the thread turns, the root having a curvature defined by a portion of an ellipse tangentially adjoining the first and second flank at respective flank transition points, the ellipse having a major axis extending parallel to the longitudinal axis and a minor axis extending perpendicular to the major axis and through a root bottom, a root semi-width of the flank transition; and', 'a root semi-width at the flank transition points of 0.050 inch to 0.061 inch., 'a thread extending helically along an uphole portion of the body in spaced thread turns, the thread comprising2. The downhole tool of claim 1 , the thread further comprising:an equivalent root radius of 0.057 inch to 0.061 inch; anda root depth of 0.012 inch to 0.020 inch.3. The downhole tool of claim 2 , wherein the root depth is 0.013 inch to 0.016 inch.4. The downhole tool of claim 1 , the root semi-width at the flank transition points being between 0.050 inch and 0.055 inch claim 1 , and the thread further comprising:an equivalent root radius of 0.057 inch to 0.061 inch; anda root depth of 0.012 inch to 0.016 inch.5. The downhole tool of claim 4 , wherein the root depth is 0.014 inch to 0.015 inch.6. The downhole tool of claim 1 , the root semi-width at the flank transition points being ...

Method and apparatus for high speed clock distribution

A clock distribution network includes receiving a remote voltage signal; transmitting the remote voltage signal into a local voltage signal using a current-mode transmission scheme that comprises a cascade of a voltage-to-current driver, a transmission line, a current buffer, and a LC (inductor-capacitor) tank; transmitting the local voltage signal into a first destination voltage signal using a voltage-mode transmission scheme that comprises a cascade of a first capacitively driven wire and a first inverter buffer; and transmitting the local voltage signal into a second destination voltage signal using a voltage-mode transmission scheme that comprises a cascade of a second capacitively driven wire and a second inverter buffer.

Front-End Module And Coupling Compensation For Closed-Loop Digital Pre-Distortion System

Examples of front-end modules, apparatuses and methods for coupling compensation in a closed-loop digital pre-distortion (DPD) system are described. The closed-loop DPD circuit may include a PA and a loopback path. The PA may receive a PA input signal and amplify the PA input signal to provide a PA output signal proportional to a product of the PA input signal and a gain of the PA. The loopback path may receive the PA output signal to output a loopback signal. A forward coupling and a backward coupling may exist between the PA input signal and an output of the loopback path. The output of the loopback path may be proportional to a product of the PA output signal and a gain of the loopback path. The loopback path may include a coupling cancellation mechanism configured to cancel couplings between the PA input signal and the loopback signal. 1. A closed-loop digital pre-distortion (DPD) circuit , comprising:a loopback path coupled to receive a PA output signal to output a loopback signal, wherein the PA output signal is provided by a power amplifier (PA) receiving and amplifying a PA input signal, wherein a forward coupling and a backward coupling exist between the PA input signal and an output of the loopback path, and wherein the loopback path comprises a coupling cancellation mechanism configured to cancel at least a portion of couplings between the PA input signal and the loopback signal.2. The closed-loop DPD circuit of claim 1 , wherein the coupling cancellation mechanism comprises:an attenuator configured to receive and attenuate the PA output signal to output an attenuated signal; anda phase alternator configured to receive the attenuated signal and shift a phase of the attenuated signal to output a first loopback signal and a second loopback signal with a non-zero phase shift from the first loopback signal such that a difference between the first loopback signal and the second loopback signal is at least approximately linearly proportional to a product of a ...

METHOD FOR PREPARATION OF ARYL POLY(OXALKYL) QUATERNARY AMMONIUM COMPOUND

A method for preparation of an aryl poly(oxalkyl) quaternary ammonium compound is provided, said method comprising steps of: 1) reacting a phenol with a dihalopolyalkylene ether under the action of a phase transfer catalyst, to obtain an arylpoly(oxalkyl) halide; 2) reacting said arylpoly(oxalkyl) halide with an amination reagent under the action of a phase transfer catalyst, to obtain an arylpoly(oxalkyl) amine; 3) reacting said arylpoly(oxalkyl) amine with an alkylation reagent, to obtain an aryl poly(oxalkyl) quaternary ammonium compound; wherein Ris H or a Cto Calkyl group, located in the ortho, meta or para position; n is an integer of 2 to 6; Ris H or a Cto Calkyl group; Ris H or a Cto Calkyl group; Ris a Cto Calkyl group; Xis Br or Cl; X is Cl, Br, or I. The preparation method according to the present invention requires low temperature and low pressure, the reaction time is short, and an overall yield can reach 75%. The operation is simple, the cost is low, and the product can be separated easily and have a purity of pharmaceutical grade, thereby facilitating the large-scale production. 2. The method according to claim 1 , wherein Ris a Cto Calkyl group claim 1 , Ris a Cto Calkyl group claim 1 , Ris a C˜Calkyl group.3. The method according to or claim 1 , wherein said phenol is one of phenol claim 1 , cresol claim 1 , 5-methyl-2-isopropyl phenol claim 1 , 2-methyl-5-isopropyl phenol claim 1 , p-tert-butyl phenol claim 1 , p-sec-butyl phenol claim 1 , p-tert-pentyl cresol claim 1 , p-sec-octyl phenol or p-tert-octyl phenol; and said dihalopolyalkylene ether is one of β claim 1 ,β′-dichloro diethyl ether claim 1 , β claim 1 ,β′-dichloro diisopropyl ether claim 1 , β claim 1 ,β′-dichloro dibutyl ether claim 1 , β claim 1 ,β′-dichloro dipentyl ether claim 1 , β claim 1 ,β′-dibromo diethyl ether claim 1 , β claim 1 ,β′-dibromo diisopropyl ether claim 1 , β claim 1 ,β′-dibromo dibutyl ether claim 1 , β claim 1 ,β′-dibromo dipentyl ether.4. The method according to ...

PUMP ROD CONNECTION

A pump rod can include a body that includes a longitudinal axis; and a pin at an end of the body where the pin includes threads where the threads include tangential elliptical roots. 1. A pump rod comprising:a body that comprises a longitudinal axis; anda pin at an end of the body wherein the pin comprises threads wherein the threads comprise tangential elliptical roots.2. The pump rod of wherein the tangential elliptical roots are defined by a root semi-width at flank transition point parameter (SW).3. The pump rod of wherein the root semi-width at flank transition point parameter has a value in a range from approximately 0.0199 inch to approximately 0.0272 inch.4. The pump rod of wherein the tangential elliptical roots are defined by a root depth parameter.5. The pump rod of wherein the root depth parameter has a value in a range from approximately 0.009 inch to approximately 0.012 inch.6. The pump rod of wherein the tangential elliptical roots are defined by an equivalent root radius.7. The pump rod of wherein the equivalent root radius parameter has a value in a range from approximately 0.022 inch to approximately 0.03 inch.8. The pump rod of wherein the tangential elliptical roots are defined by a pitch parameter.9. The pump rod of wherein the pitch parameter has a value in a range from approximately ⅛ inch to approximately ⅙ inch.10. The pump rod of wherein the tangential elliptical roots are defined by a flank angle parameter.11. The pump rod of wherein the flank angle parameter has a value in a range from approximately 25 degrees to approximately 30 degrees.12. The pump rod of wherein the tangential elliptical roots are defined by a root width at crest parameter.13. The pump rod of wherein the root width at crest parameter has a value in a range from approximately 0.0425 inch to approximately 0.056 inch.14. The pump rod of wherein the pin comprises a stress relief groove portion.15. The pump rod of wherein the stress relief groove portion comprises an axial ...

Range Finder

A range finder includes an image capturing module, a transceiver module, a switching module, an output device and a processing unit. The image capturing module is configured to receive a first light beam emitted by an object. The transceiver module is configured to emit a second light beam to the object and receive the second light beam reflected by the object for obtaining a distance between the range finder and the object. The switching module is configured to output an electrical signal corresponding to a selected operating mode selected from a plurality of operating modes. The output device is configured to show the selected operating mode corresponding to the electrical signal. The processing unit is connected to the image capturing module, the transceiver module and the output device for receiving the electrical signal and controlling the image capturing module, the transceiver module and the output device. 1. A range finder , comprising:an image capturing module configured to receive a first light beam emitted by an object for displaying an image of the object;a transceiver module configured to emit a second light beam to the object and receive the second light beam reflected by the object for obtaining a distance between the range finder and the object;a switching module configured to output an electrical signal corresponding to a selected operating mode which is selected from a plurality of operating modes;an output device configured to show the selected operating mode corresponding to the electrical signal; anda processing unit electrically connected to the image capturing module, the transceiver module and the output device for receiving the electrical signal and controlling the image capturing module, the transceiver module and the output device according to the electrical signal.2. The range finder as claimed in claim 1 , wherein the switching module comprises a circuit unit and a plurality of triggering elements claim 1 , and one of the triggering ...

Charge Pump Calibration for Dual-Path Phase-Locked Loop

Embodiments of the invention are generally directed to charge pump calibration for a dual-path phase-locked loop circuit. An embodiment of an apparatus includes a phase frequency detector; an integral path including a first charge pump; a proportional path including a second charge pump; and a calibration mechanism for the first charge pump and the second charge pump, the calibration mechanism including a phase detector to detect whether a reference clock signal or a feedback clock signal is leading or lagging in phase and to generate a signal indicating which clock signal is leading or lagging, a first memory element and a second memory element to store the signal from the phase detector, a first control logic to adjust current for the first charge pump based on the value stored in the first memory element, and a second control logic to adjust current for the second charge pump based on the value stored in the second memory element. 1. An apparatus comprising:a phase frequency detector;an integral path including a first charge pump;a proportional path including a second charge pump; and a phase detector to detect whether a reference clock signal or a feedback clock signal is leading or lagging in phase and to generate a signal indicating which clock signal is leading or lagging,', 'a first memory element and a second memory element to store the signal from the phase detector,', 'a first control logic to adjust current for the first charge pump based on the value stored in the first memory element, and', 'a second control logic to adjust current for the second charge pump based on the value stored in the second memory element., 'a calibration mechanism for the first charge pump and the second charge pump including2. The apparatus of claim 1 , further comprising a first divider to divide a frequency of the reference clock signal by 2 claim 1 , the divided reference clock signal to be provided to the phase frequency detector as a first input.3. The apparatus of claim ...

SRAM CORE CELL DESIGN WITH WRITE ASSIST

A static random access memory (SRAM) cell is disclosed. The SRAM cell includes a storage unit configured to store a data bit in a storage node. The SRAM cell further includes an access unit coupled to the storage unit. The access unit is configured to transfer current to the storage node when a word line is asserted. The SRAM cell further includes a row header configured to provide current from a power supply when the word line is not asserted, and to not provide current from the power supply when the word line is asserted. The SRAM cell further includes a column header configured to provide current from a power supply when a write column line is not asserted, and to not provide current from the power supply when the write column line is asserted. 1. A static random access memory (SRAM) cell , comprising:a storage unit configured to store a data bit in a storage node;an access unit coupled to the storage unit, to a word line, and to a bit line and configured to transfer current from the bit line to the storage node when the word line is asserted;a row header coupled to the storage unit, to the word line, and to a power supply rail and configured to transfer current from the power supply rail to the storage unit when the word line is not asserted and to transfer substantially no current from the power supply rail to the storage unit when the word line is asserted; anda column header coupled to the storage unit, to a write column line, and to the power supply rail and configured to transfer current from the power supply rail to the storage unit when the write column line is not asserted and to transfer substantially no current from the power supply rail to the storage unit when the write column line is asserted.2. The SRAM cell of claim 1 , wherein the row header further comprises a switching mechanism configured to transfer current from the power supply rail to the storage unit when the word line is not asserted and to not transfer current from the power supply rail ...

Controlling a hydraulic pressure of a fluid transmission

A control device for controlling a hydraulic pressure of a fluid transmission includes a pressure sensor for detecting actual pressure values of the hydraulic pressure, an electronic control unit for generating a control signal as a function of the actual pressure values detected by the pressure sensor and a reference pressure signal delivered to the control unit, a power switch controlled by the control signal and a solenoid valve actuated by the power switch for generating the hydraulic pressure. The control device is configured as a compact electromagnetic unit. The electronic control unit is respectively connected to the pressure sensor and to the power switch by a direct electrical connection. A method for controlling a hydraulic pressure of a fluid transmission is also provided.

APPARATUSES AND METHODS FOR WEBPAGE CONTENT PROCESSING

A present disclosure relates to a method for processing webpage content. The method may comprise, through one or more processor of a terminal device, opening a target webpage on the terminal device; obtaining a target extraction instruction; extracting a title and text content from the target webpage according to the extraction instruction; and displaying the extracted title and text content on the terminal device. 1. A method for processing webpage content processing , the method comprising:providing a terminal device including at least one processor; 'wherein the target page includes a plurality of title content blocks and a plurality of text content blocks;', 'opening, via said at least one processor, a target webpage on the terminal device,'} is configured to match with a uniform resource locator (URL) address of the target webpage, and', 'includes a path description of the plurality of title content blocks and a path description of the plurality of text content blocks of the target webpage configured to direct the at least one processor to extract content of the target webpage;, 'obtaining, via said at least one processor, a target extraction instruction, wherein the target extraction instructionextracting, by the at least one processor, a title and text content from the target webpage according to the path description of the title content block and the path description of the text content block; anddisplaying, the extracted title and text content on the terminal device.2. The method according to claim 1 , wherein the obtaining of the target extraction instruction comprises: wherein the plurality of extraction instructions is associated with an Internet domain name of the target webpage, and', 'wherein each of the plurality of extraction instructions includes a regular expression that identifies a URL address that the extraction instruction applies to;, 'selecting an extraction instruction from a plurality of extraction instructions as a candidate extraction ...

Multi-disciplinary optimization-enabled design automation and optimization for pressure-controlling components

A multi-disciplinary optimization (MDO) framework and workflow facilitates analysis and optimization of set of designs of a pressure-controlling component. The MDO workflow generally enables design workflow integration and automation, which can improve engineering efficiency, and enables automated optimization within the workflow automation, which facilitates performance and reliability improvement for product development. The MDO workflow enables the integration of computer-aided design (CAD), finite element analysis (FEA), digital manufacturing simulation (DMS), and optimization packages to facilitate testing and optimization of a set of pressure-controlling component designs. As such, the MDO framework and workflow improve the efficiency of the design process by providing a scalable solution for automating aspects of the design process for a set of designs of a pressure-controlling component, which may represent a product family or a set of competing alternative designs.

Compensation scheme for mhl common mode clock swing

Embodiments of the invention are generally directed to compensation for common mode signal swing. An embodiment of an apparatus includes a connector for the transfer of the data, the connector including connections for a first set of one or more conductors; a receiver for the reception of data via the connector, the received data including a first signal and a second signal transmitted via the set of one or more conductors, the second signal being a common mode signal modulating the first signal, the receiver including an amplifier to amplify the received data with a positive gain; and a common mode compensation circuit to compensate for a voltage swing of the common mode signal in the amplified received data. The common mode compensation circuit is to sense the common mode signal, amplify the sensed common mode signal with a negative gain, and feed back the amplified common mode to output nodes of the receiver.

High-Q Integrated Inductor and Method Thereof

A device having a substrate, a dielectric slab attached upon the substrate, a coil including a plurality of metal segments laid out on a first metal layer secured by the dielectric slab, the coil being substantially laterally symmetrical with respect to a central line from a top view perspective, and a shield laid out on a second metal layer secured by the dielectric slab and configured in a tree topology. The shield is substantially laterally symmetrical with respect to the central line from the top view perspective, the tree topology including a plurality of clusters of branches, wherein each of said plurality of clusters of branches is associated with a respective metal segment of the coil and includes a primary branch and at least one set of secondary branches that are branched from the primary branch, parallel to one another, and oriented at a substantially forty-five-degree angle with respect to the respective metal segment from the top view perspective.

Rotary Shouldered Connections and Thread Design

A thread structure in accordance to one or more embodiments includes a thread extending helically along the cylindrical member in spaced thread turns, the thread having a crest extending between a first flank and a second flank and a root extending between the thread turns, the root having a curvature defined by a portion of an ellipse tangentially adjoining the first and second flank at respective flank transition points, the ellipse having a major axis extending parallel to the axis and a minor axis extending perpendicular to the major axis and through a root bottom. 1. A thread structure , comprising:a cylindrical member extending along an axis; a crest extending between a first flank and a second flank; and', 'a root extending between the thread turns, the root having a curvature defined by a portion of an ellipse tangentially adjoining the first and second flank at respective flank transition points, the ellipse having a major axis extending parallel to the axis and a minor axis extending perpendicular to the major axis and through a root bottom., 'a thread extending helically along the cylindrical member in spaced thread turns, the thread comprising2. The thread structure of claim 1 , further comprising:a root semi-width at the flank transition points of about 0.050 to about 0.061 inches;an equivalent root radius of about 0.057 to about 0.061 inches; anda root depth of about 0.012 to about 0.020 inches.3. The thread structure of claim 2 , wherein the root depth is about 0.013 to about 0.016 inches.4. The thread structure of claim 1 , further comprising:a root semi-width at the flank transition points of about 0.050 to about 0.055 inches;an equivalent root radius of about 0.057 to about 0.061 inches; anda root depth of about 0.012 to about 0.016 inches.5. The thread structure of claim 4 , wherein the root depth is about 0.014 to about 0.015 inches.6. The structure of claim 1 , further comprising:a root depth of about 0.012 to about 0.020 inches;a root semi- ...

Cold Rolling Devices and Colled Rolled Rotary Shouldered Connection Threads

A method of cold rolling a thread on a tubular support member of a rotary shouldered thread connection includes obtaining an original root depth of a thread root, cold rolling the thread until a minimum increased root depth tolerance is achieved. The thread may be cold rolled with a wheel tip having an elliptical profile. 1. A thread cold rolling device , comprising: an equivalent root radius of about 0.057 inches to about 0.061 inches;', 'a first and a second wheel angle between the center axis and opposing sides of an outer surface of the wheel tip, wherein the first wheel angle is about 20 degrees to about 30 degrees; and', 'a root depth of about 0.012 inches to about 0.020 inches., 'a wheel having a center axis perpendicular to a wheel rotational axis and a wheel tip having an elliptical root profile comprising2. The device of claim 1 , wherein the elliptical root profile of the wheel tip further comprises:a major axis having a semi-major axis length of about 0.050 inches to about 0.055 inches; anda minor axis having a semi-minor axis length of about 0.013 to about 0.020 inches.3. The device of claim 1 , wherein the outer surface of the wheel has a roughness of about 8 to about 32 micro-inches.4. The device of claim 1 , wherein the outer surface of the wheel has a roughness of about 16 micro-inches.5. The device of claim 1 , wherein the first wheel angle and the second wheel angle may be the same or may be different.6. The device of claim 1 , wherein the second wheel angle is about 15 to about 20 degrees.7. The device of claim 1 , wherein the first wheel angle is about 25 to about 29 degrees and the second wheel angle is about 17 to about 20 degrees.8. The device of claim 1 , wherein:the equivalent root radius is about 0.058 inches;the root depth is about 0.014 inches;the first wheel angle is about 28 degrees;a major axis of the elliptical root profile of the wheel tip has a semi-major axis length about 0.052 inches; anda minor axis of the elliptical root ...

LC Tank Circuit and Fabrication Method Thereof

A device includes a coil configured in a loop topology starting from a first end and extending to a second end, a pair of inward extension legs configured to extend from the first end and the second end toward an interior side of the coil to a third end and a fourth end, respectively, a pair of outward extension legs configured to extend from the first end and the second end toward an exterior side of the coil to a fifth end and a sixth end, respectively, a first capacitor configured to provide a capacitive coupling between the first end and the second end, a second capacitor configured to provide a capacitive coupling between the third end and the fourth end, and a third capacitor configured to provide a capacitive coupling between the fifth end and the sixth end. 1. A device comprises:a coil configured in a loop topology starting from a first end and extending to a second end;a pair of inward extension legs configured to extend from the first end and the second end toward an interior side of the coil to a third end and a fourth end, respectively;a pair of outward extension legs configured to extend from the first end and the second end toward an exterior side of the coil to a fifth end and a sixth end, respectively;a first capacitor configured to provide a capacitive coupling between the first end and the second end;a second capacitor configured to provide a capacitive coupling between the third end and the fourth end; anda third capacitor configured to provide a capacitive coupling between the fifth end and the sixth end.2. The device of claim 1 , wherein the pair of inward extension legs are narrower than the coil.3. The device of claim 1 , wherein the pair of outward extension legs are narrower than the coil.4. The device of claim 1 , wherein at least one of the first claim 1 , the second claim 1 , and the third capacitor is of an interdigitated finger topology.5. The device of claim 1 , wherein at least one of the first claim 1 , the second claim 1 , and the ...

SYSTEMS AND METHODS USING AN AUTOMATED MODEL

An asset management system that includes a field asset management system; a maintenance management system; and a digital avatar associated with a specific asset. The digital avatar has an automatic Model that is customized for the associated asset. The digital avatar automatically receives information from at least one of the field asset management system or maintenance management system as information associated with the asset is entered into the at least one of the field asset management system or maintenance management system. The automatic Model automatically runs with the new information and provides a new operating parameter for use by at least the field asset management system. 1. An asset management system comprising:a field asset management system;a maintenance management system; anda digital avatar associated with a specific asset, wherein the digital avatar comprises an automatic model that is customized for the associated asset, and the automatic model automatically is configured to receive updated information from at least one of the field asset management system and maintenance management system after information associated with the asset is entered into at least one of the field asset management system or the maintenance management system, and wherein the automatic model automatically runs with the updated information and provides a new operating parameter for use by at least the field asset management system or the maintenance management system.2. The system of claim 1 , wherein the asset is a tool housing claim 1 , and wherein the digital avatar comprises several models for distinct points along the tool housing.3. An asset management system comprising:a database; anda model management system that comprises a data management module and one or more models, wherein the data management module configures a processor to receive new input data from the database, identify the asset associated with the new input data, the parameters associated with the new ...

Replica cascode bias voltage-controlled oscillators

Embodiments relate to a voltage oscillator (VCO) (100) that uses a replica bias circuit (103) to generate a cascode bias voltage. The VCO (100) generates an output periodic signal having a frequency and phase that is less or not susceptible to voltage swings by using a bias voltage generated in a replica bias circuit (103) that replicates a voltage-to-current converter (101) in the VCO (100). The bias voltage is generated and regulated according to a power supply voltage that supplies power to the VCO (100) to account for voltage variations in the power supply voltage.

Lymphocyte activation gene-3 (lag-3) binding antibody and use thereof

The present invention relates to an antibody binding to lymphocyte activation gene-3 (LAG-3) and use thereof.

Method of Developing Latent Fingerprints

Latent fingerprints on a porous substrate such as paper are developed for viewing and recordal by applying heat to cause the fingerprint to be clearly viewed under radiation to cause the fingerprint to fluorescence (e.g. a few seconds heating with air or client contact with a heated device at around 260° C.) and viewing under e.g. light of 200 nm to 550 nm with a filter in the yellow to orange wavelength region. Alternatively more extended heating can render the fingerprint assemble under ultraviolet light, and under yet more extended heating permits viewing under white light.

Pump rod connection

A pump rod can include a body that includes a longitudinal axis; and a pin at an end of the body where the pin includes threads where the threads include tangential elliptical roots.

Laser distance-measuring device

A laser distance-measuring device includes a laser-transmitting portion, a laser-receiving portion, a coupling portion, an inclination-measuring portion, a signal-processing portion, and a display. The laser-transmitting portion emits a laser beam, and the laser-receiving portion receives the laser beam. The coupling portion interconnects the laser-receiving portion and the signal-processing portion. The inclination-measuring portion detects an inclination angle of the laser beam. The signal-processing portion processes the signals received from the laser-receiving portion and the inclination-measuring portion and sends the result to the display. The display receives and displays the result of processing by the signal-processing portion.

Threaded connections and downhole tools incorporating the same

A thread structure in accordance to one or more embodiments includes a thread extending helically along a portion of a bit body in spaced thread turns, the thread having a crest extending between a first flank and a second flank and a root extending between the thread turns, the root having a curvature defined by a portion of an ellipse tangentially adjoining the first and second flank at respective flank transition points, the ellipse having a major axis extending parallel to the axis and a minor axis extending perpendicular to the major axis and through a root bottom.

Impeller for water pump

The object of the present invention is to maintain a discharge performance by making a discharge flow rate constant in a low rotation region of an engine rotation speed and to reduce the discharge flow rate in a high rotation region. The impeller includes a housing case (1) , an impeller base (2) provided with plural holes and plural elliptical elongated holes, a vane body (3) provided with a rotary shaft (S) on an inner peripheral side and a rocking shaft on an outer peripheral side, a plate cam in which an elongated groove is formed on an outer peripheral side of a disc portion and a single torsion spring (5). The spring (5) and the plate cam (4) are housed in the housing case (1) and the impeller base (2) . The rotary shaft (S) is inserted rotatably into the holes, and the rocking shaft is movably inserted into the elliptical elongated holes and the elongated groove.

Apparatus and method for frequency tripling

An apparatus includes a phase interpolator configured to receive a four-phase signal and output a six-phase signal, and a summing network configured to receive the six-phase signal and output a two-phase signal, wherein: a first phase, a third phase, and a fifth phase of the six-phase signal are summed to generate a second phase of the two-phase signal, while a second phase, a fourth phase, and a sixth phase of the six-phase signal are summed to generate a first phase of the two-phase signal.

Method and system for processing data

A data processing method and system and relevant devices are provided to improve the processing efficiency of cores. The method includes: storing received packets in a same stream sequentially; receiving a Get_packet command sent by each core; selecting, according to a preset scheduling rule, packets for being processed by each core among the stored packets; receiving a tag switching command sent by each core, where the tag switching command indicates that the core has finished a current processing stage; and performing tag switching for the packets in First In First Out (FIFO) order, and allocating the packets to a subsequent core according to the Get_packet command sent by the subsequent core after completion of the tag switching, so that the packet processing continues until all processing stages are finished. A data processing system and relevant devices are provided. With the present invention, the processing efficiency of cores may be improved.

Laser range finding device and distance measurement method thereof

A distance measurement method for use in a laser range finding device to measure a distance between the laser range finding device and a target is disclosed. The method comprises the following steps. A laser signal is sent to the target in a first time point. A reflected laser signal reflected by the target is then received. A digital signal having a plurality of signal values ranging from 0 to N is obtained by sampling the reflected laser signal with a sampling signal, wherein N is an integer larger than two. A maximum signal value among the signal values is obtained. The distance is calculated according to the first time point and a second time point where the maximum signal value is generated.

Lymphocyte activation gene-3 (LAG-3) binding antibody and use thereof

The present invention relates to an antibody binding to lymphocyte activation gene-3 (LAG-3) and use thereof.

Methods and devices for data demodulation

Embodiments of the present disclosure relate to methods and device for receiving PAM data stream. In an embodiment, a method comprises receiving a signal stream modulated with pulse amplitude modulation (PAM) associated with a plurality of bit patterns; determining boundary voltages for the plurality of bit patterns; and calibrating, based on the boundary voltages, a threshold voltage for use in recognition of the plurality of bit patterns. In this way, bit patterns may be accurately recognized based on the calibrated threshold voltage.

Multifunctional rangefinder

Laser range finding device and distance measurement method thereof

A distance measurement method for use in a laser range finding device to measure a distance between the laser range finding device and a target is disclosed. The method comprises the following steps. A laser signal is sent to the target in a first time point. A reflected laser signal reflected by the target is then received. A digital signal having a plurality of signal values ranging from 0 to N is obtained by sampling the reflected laser signal with a sampling signal, wherein N is an integer larger than two. A maximum signal value among the signal values is obtained. The distance is calculated according to the first time point and a second time point where the maximum signal value is generated.

Cpr posture evaluation model and system

The present invention relates to a CPR posture monitoring model and system, the model being configured to: based on human skeleton point data extracted from CPR moves, at least compute arm-posture angle data and GC matching angle data related to the CPR moves, and determine whether the CPR moves are qualified by comparing arm-posture angle data and GC matching angle data to a CCP qualification threshold; wherein human skeleton point data are extracted from first move data collected by a first optical component and second move data collected by a second optical component simultaneously, wherein an included angle between collection directions of the two optical components ranges between 30 and 90 degrees. By constructing and applying a CPR posture monitoring model defined by data like GC matching angle, evaluation result has higher accuracy. Compared with the prior art where the equipment positions must be exactly the same as the equipment positions when the data are acquired for the AI algorithm to compute the CPR mistakes, the disclosed method does not require that the equipment positions must be exactly the same as the equipment positions when collecting the data and could tolerate inaccuracy or error in the equipment positions, besides, the disclosed method could realize harmless quality control of CPR moves.

Point cloud encoding method and apparatus, electronic device, medium and program product

Disclosed are a point cloud encoding method and apparatus, an electronic device, a medium, and a program product. The method includes: performing image layer division on a to-be-processed laser radar point cloud to generate different types of image layers; performing region segmentation on each image layer using a region segmentation method correspondingly set for a type of the corresponding image layer, so as to obtain region images corresponding to each image layer; arranging the region images corresponding to each image layer to obtain arranged images corresponding to each image layer; and encoding each arranged image based on an encoding method correspondingly set for the type of the corresponding arranged image, so as to obtain encoded data of the laser radar point cloud.

Multifunction rangefinder

A multifunction rangefinder capable of measuring distance, compass location and altitude. A distance measurement unit capable of long and short distance measurements transmits a light beam to a target, receives a reflected light from the target and outputs a distance measurement signal. A compass measurement unit measures terrestrial magnetism and outputs a compass measurement signal. An altitude measurement unit measures atmospheric pressure to generate an altitude measurement signal. A microprocessor calculates a distance between the target and the multifunction rangefinder, altitude and the compass location of the target according to the distance, altitude and compass measurement signals respectively.

Echo cancellation for high speed full duplex data transmissions

Systems, devices and methods for analog echo cancellation for high speed full duplex data transmissions, which include a first set of differential nodes to receive reception data and transmission data, a second set of differential nodes to receive the transmission data, and a subtraction circuit to receive data from the first set of differential nodes and data from the second set of differential nodes. The subtraction circuit includes a plurality of capacitors to receive data from each of the first and second sets differential nodes, and a termination circuit for providing DC termination voltage to subtract the data of the second set of differential nodes from the data of the first set of differential nodes to eliminate echo from the reception data received at the first set differential nodes.

Wideband adaptive bias circuits for power amplifiers

Methods and apparatus for providing adaptive biasing to power amplifiers. Adaptive bias circuits are configured to provide sharp turn on and/or current clamping to improve the efficiency of a power amplifier over a wide input signal bandwidth. Sharp turn on may be achieved using a subtraction technique to subtract outputs from multiple detectors. Clamping may be achieved using MOSFET device characteristics to pull the device from the triode region into the saturation, subtraction techniques to subtract the outputs from multiple detectors, and/or by using circuit devices, such as diodes.

Downhole tool string movement sensor system

A method can include acquiring motion sensor data using a motion sensor at a motion sensor location of a tool string disposed in a borehole during a field operation; transmitting the motion sensor data to transfer function circuitry of the tool string; operating the transfer function circuitry to apply a transfer function to the motion sensor data to determine one or more of lateral displacement and velocity at a location of the tool string that is a distance from the motion sensor location; and characterizing sensor data acquired by a sensor at the location using at least one of the one or more of the lateral displacement and the velocity.

一种反硝化滤池碳源投加装置

本实用新型公开了一种反硝化滤池碳源投加装置，包括反硝化滤池、进水管、投料管，所述反硝化池包括进水区、反应区和出水区，且反硝化池的进水区安装有进水DO仪及进水硝氮仪表，所述出水区安装有出水DO仪、硝氮仪及COD检测仪表，所述进水管管路上安装有进水泵和进水流量计，所述进水管的出水端连接有具有逐级混合功能的碳源混合均匀箱，所述投料管也与碳源混合均匀箱连通并通过外接给料泵进行给料，且投料管上安装有投料流量计，所述碳源混合均匀箱的出水口与进水区连通。本实用新型能够使得碳源在投加时能够与进水区充分混合后进入到反应区中，并可以根据进水水质情况间歇性投加碳源，减少了碳源的投加成本。

Decision Feedback Equalizer Circuit

The present disclosure provides a decision feedback equalizer circuit. The decision feedback equalizer circuit includes: a first adder circuit, configured to add sampled data, first correction data and target correction data; a first sampler amplifier, configured to sample data output by the first adder circuit through a first signal component in a first clock signal to obtain a first sampling result; a second adder circuit, configured to add the sampled data, the first correction data and the target correction data; a second sampler amplifier, configured to sample data output by the second adder circuit through a second signal component in the first clock signal to obtain a second sampling result; and a correction parameter processing element, configured to determine the target correction data through a second clock signal, the first sampling result and the second sampling result.

Decision feedback equalizer circuit

The present disclosure provides a decision feedback equalizer circuit. The decision feedback equalizer circuit includes: a first adder circuit, configured to add sampled data, first correction data and target correction data; a first sampler amplifier, configured to sample data output by the first adder circuit through a first signal component in a first clock signal to obtain a first sampling result; a second adder circuit, configured to add the sampled data, the first correction data and the target correction data; a second sampler amplifier, configured to sample data output by the second adder circuit through a second signal component in the first clock signal to obtain a second sampling result; and a correction parameter processing element, configured to determine the target correction data through a second clock signal, the first sampling result and the second sampling result.

Multi-disciplinary optimization-enabled design automation and optimization for pressure-controlling components

A multi-disciplinary optimization (MDO) framework and workflow facilitates analysis and optimization of set of designs of a pressure-controlling component. The MDO workflow generally enables design workflow integration and automation, which can improve engineering efficiency, and enables automated optimization within the workflow automation, which facilitates performance and reliability improvement for product development. The MDO workflow enables the integration of computer-aided design (CAD), finite element analysis (FEA), digital manufacturing simulation (DMS), and optimization packages to facilitate testing and optimization of a set of pressure-controlling component designs. As such, the MDO framework and workflow improve the efficiency of the design process by providing a scalable solution for automating aspects of the design process for a set of designs of a pressure-controlling component, which may represent a product family or a set of competing alternative designs.

Altay big-tailed sheep bone calcium tablet candy and preparation method thereof

Decision Feedback Equalizer and Method for Acquiring and Correcting Data

The present disclosure discloses a decision feedback equalizer and a method for acquiring and correcting data. The decision equalizer comprises: a first decision sampling circuit; and a second decision sampling circuit; wherein an input end of the first decision sampling circuit is configured to receive sampling data and a first sampling result outputted by the second decision sampling circuit in a previous sampling period, so as to determine a first correction mode for the sampling data by means of the first sampling result, and correct the sampling data by means of the first correction mode; and an input end of the second decision sampling circuit is configured to receive sampling data and a second sampling result outputted by the first decision sampling circuit in a previous sampling period, so as to determine a second correction mode for the sampling data according to the second sampling result, and correct the sampling data according to the second correction mode.

光療刮痧板

Ranging system and method and apparatus of sampling signal for the same

LED projector and method

Method for manufacturing closed impeller

The present invention provides a method for manufacturing a closed impeller that has a simple configuration and enables fusion in a very accurate position. The method includes: forming a frustum-shaped front plate 1 and a disk-shaped base plate 3 formed therebelow, upper surfaces of a plurality of unit impeller blade plates 21 made from a synthetic resin extending in radial directions which are formed as impeller blade tip surfaces 21a, with sharp-pointed ridge-like protrusions 4 having an acute upper end and a width less than a width of the impeller blade tip surface being integrally formed on the impeller blade tip surfaces 21a. In the method, an inner surface 1b of the front plate 1 and the plurality of impeller blade tip surfaces 21a are formed as parts of conical surfaces and formed so that the cone apex angles of the two conical surfaces are equal to each other. Then, the front plate is placed on the impeller blade 2 and the ends of the sharp-pointed ridge-like protrusions 4 and the inner surface 1b of the front plate 1 are brought into contact with each other. Small vibrations are then provided, while applying an appropriate pressurizing force between the front plate 1 and the impeller blade 2 having the base plate 3 attached thereto, the sharp-pointed ridge-like protrusions 4 are melted, and the front plate 1 is fused to the tip surfaces of the impeller blade 2.

Method for manufacturing closed impeller

Laser range finding device & distance measurement method thereof

A distance measurement method for use in a laser range finding device to measure a distance between the laser range finding device and a target is disclosed. The method comprises the following steps. A laser signal is sent to the target in a first time point. A reflected laser signal reflected by the target is then received. A digital signal having a plurality of signal values ranging from 0 to N is obtained by sampling the reflected laser signal with a sampling signal, wherein N is an integer larger than two. A maximum signal value among the signal values is obtained. The distance is calculated according to the first time point and a second time point where the maximum signal value is generated.

Method for setting system working frequency

A method for setting system working frequency includes the steps of: executing assert reset; modulating the system working frequency according to set values of BIOS through a jumper-free IC; deasserting reset and starting CPU; and proceeding and completing subsequent initialization process.

太陽能發光箱結構

Cold rolling devices and colled rolled rotary shouldered connection threads

A method of cold rolling a thread on a tubular support member of a rotary shouldered thread connection includes obtaining an original root depth of a thread root, cold rolling the thread until a minimum increased root depth tolerance is achieved. The thread may be cold rolled with a wheel tip having an elliptical profile.

Feed additive protecting largemouth bass’s intestines and its application

Decision feedback equalizer and method for acquiring and correcting data

The present disclosure discloses a decision feedback equalizer and a method for acquiring and correcting data. The decision equalizer comprises: a first decision sampling circuit; and a second decision sampling circuit; wherein an input end of the first decision sampling circuit is configured to receive sampling data and a first sampling result outputted by the second decision sampling circuit in a previous sampling period; and an input end of the second decision sampling circuit is configured to receive sampling data and a second sampling result outputted by the first decision sampling circuit in a previous sampling period.