DIE PAPIERHERSTELLUNG BEGLEITENDES VERFAHREN ZUR VINSATZ EINES COPOLYMERISATS AUS DIALLYL-N,N-DISUBSTITUIERTEM AMMONIUMHALOGENID/ACRYLAMID UND EINES STRUKTURELL MODIFIZIERTEN KATIONISCHEN POLYMERS

Method of improving retention and drainage in a papermaking process using diallyl-N, N-disubstituted ammonium halide/acrylamide copolymer and a structurally modified cationic polymer

Low dropout voltage regulator

A low dropout voltage regulator (LDO) includes a regulating circuit, an amplifier, and a first compensating path. The regulating circuit is configured to receive an input signal at an input terminal and provide an output signal at an output terminal in response to a control signal received at the control terminal. The amplifier may have a first input terminal coupled to a first input path and an output terminal be coupled to the control terminal of the regulating circuit via a path to provide the control signal. The first compensating path is coupled between a first node on the first input path and a first node on the path coupling the output terminal of the amplifier to the control terminal of the regulating circuit, the first compensating path including a first compensating capacitor.

DIE PAPIERHERSTELLUNG BEGLEITENDES VERFAHREN ZUR VINSATZ EINES COPOLYMERISATS AUS DIALLYL-N,N-DISUBSTITUIERTEM AMMONIUMHALOGENID/ACRYLAMID UND EINES STRUKTURELL MODIFIZIERTEN KATIONISCHEN POLYMERS

The PAPER TRADE COMPANY PROCEDURE FOR the IMPROVEMENT of the RETENTION AND DRAINAGE UNDER EMPLOYMENT of a COPOLYMER FROM DIALLYL n, n DISUBSTITUIERTEM AMMONIUM HALIDE/CACRYLAMIDE AND a STRUCTURALLY MODIFIED KATIONI POLYMER

K8S network topology automatic discovery system and method based on IP packet analysis

The invention discloses a K8S network topology automatic discovery system and method based on IP packet analysis. A Node acquisition and preprocessing unit captures IP headers for analysis, extraction and grouping, and sends the IP headers to a calculation unit. The calculation unit completes aggregation calculation and stores a result in a topology snapshot library and an index library; the topology snapshot library and the index library are stored according to time and resource dimensions; query services are extracted from a database according to conditions and then provided to an application layer. Based on IP packet capture, namely based on IP event driving, the data processing efficiency can be improved, and occupation of server resources can be reduced; network access conditions from IP to IP and from IP ports to IP ports can be captured in real time.

Controller for a DC to DC converter having linear mode and switch mode capabilities

A controller for a DC to DC converter. The controller may comprise linear mode circuitry and switch mode control circuitry. The linear mode control circuitry may be capable of providing a first control signal to a controlled device of the DC to DC converter. The controlled device may operate as a variable resistor in response to the first control signal to control an output voltage of the DC to DC converter. The switch mode control circuitry may be capable of providing a second control signal to the controlled device of the DC to DC converter. The controlled device may turn ON and OFF in response to the second control signal to control the output voltage of the DC to DC converter. One of the linear mode control circuitry and the switch mode control circuitry may be enabled. The controller may also include protection circuitry.

Green spray-immersion type fitness washing machine

The invention provides a green spray-immersion type fitness washing machine. The washing machine comprises a drum part, a water storage part, a water spraying part and a driving part, wherein the drum part is a horizontal three-layer netty drum, and is respectively a first layer of netty drum, a second layer of netty drum and a third layer of netty drum from internal to external; a common clothes washing area is formed between the first layer of netty drum and the second layer of netty drum; a special clothes washing area is formed between the second layer of netty drum and the third layer of netty drum; the third layer of netty drum takes the shape of roller blind, and can be opened totally at one side for fixing clothes. The water storage part is provided with a water storage tank; the drum part is arranged in the water storage tank. The water spraying part is provided with a water supply unit and at least two rows of pressure nozzles respectively formed in the first layer of netty drum ...

Unmanned aerial vehicle paddle orientation device and method controlled by multi-motor combined motion

According to the multi-motor combined motion control unmanned aerial vehicle paddle orientation device and method, the multi-motor combined mode is flexible in operation, and corresponding multi-motor combined motion control strategies can be selected according to different unmanned aerial vehicle paddle layout structures. The multi-rotor unmanned aerial vehicle parking cabin is suitable for multiple types of rotor unmanned aerial vehicles, the same unmanned aerial vehicle parking cabin is compatible with the multiple types of rotor unmanned aerial vehicles, and the manufacturing cost of the multi-rotor unmanned aerial vehicle special parking cabin is reduced.

Adaptive combination power supply circuit and charging architecture

Certain aspects of the present disclosure generally relate to an adaptive combination power supply circuit. The adaptive combination power supply circuit may be capable of switching between performing as a three-level buck converter and as a divide-by-two charge pump. One example power supply circuit generally includes a first transistor; a second transistor coupled to the first transistor via a first node; a third transistor coupled to the second transistor via a second node; a fourth transistor coupled to the third transistor via a third node; a capacitive element having a first terminal coupled to the first node and a second terminal coupled to the third node; an inductive element having a first terminal coupled to the second node; and a switch having a first terminal coupled to the first terminal of the inductive element, the switch having a second terminal coupled to a second terminal of the inductive element.

Herstellungsverfahren zur direkten Synthetisierung von Titanweiß aus einer aus Ilmenit hergestellten titanreichen organischen Phase

Die vorliegende Erfindung betrifft ein Verfahren zur direkten Synthetisierung von Titanweiß aus einer aus Ilmenit hergestellten titanreichen organischen Phase, insbesondere ein solches, bei dem zunächst durch ein effizientes Mineralauflösungsverfahren eine titanreiche säurehydrolytische Lösung erhalten wird, anschließend die Titanionen mittels eines wirksamen Titan-Extraktionsmittels in eine organische Phase übergeführt werden, um eine hochreine titanreiche organische Phase zu erhalten, und dann in der organischen Phase eine direkte Synthetisierung von Titanweiß erfolgt. Mit diesem Verfahren können eine zuverlässige Erhöhung der Auflösungsrate von Ilmenit, eine Verkürzung des Verfahrensprozesses, eine Absenkung der Produktionskosten und eine Herstellung von Titanweiß hoher Qualität mit hoher Ausbeute erreicht werden.

PCM/FM telemetering system-based data security communication method

The invention relates to a pulse code modulation (PCM)/frequency modulation (FM) telemetering system-based data security communication method. The method comprises the following steps of: assigning a cipher key until an initial key generator generates an initial key; generating a key stream through a clock-controlled key stream generator, and generating a next group of data cipher keys; generating ciphertext from data to be transmitted and key stream exclusive OR, packaging into a frame, and performing Turbo encoding on the packaged data frame; and finally, performing signal sampling on the data subjected to the Turbo encoding, performing preset filtering on the sampled data, feeding the data into a channel through FM modulation, wherein a receiving end receives and synchronizes the signal, and at the receiving end, the signal is processed in an inverted sequence in turn and is successively subjected to coherent demodulation, data sampling, Turbo code decoding and decryption through the ...

CIRCUITS AND METHODS FOR CONTROLLING A BOOST SWITCHING REGULATOR BASED ON INDUCTOR CURRENT

The present disclosure pertains to circuits and methods for controlling a boost switching regulator based on inductor current. An input voltage is coupled to a first terminal of an inductor and the second terminal of the inductor is alternately coupled between a reference voltage and a boosted output voltage. The input voltage is further coupled to a first terminal of an integrator circuit, and a second terminal of the integrator circuit may be alternately coupled between the reference voltage and the boosted output voltage, for example, to produce a voltage corresponding to a current in the inductor. The present circuit may be used for voltage control or current control modes, or both, in a boost switching regulator. 1. A boost switching regulator circuit comprising:an inductor having a first terminal configured to receive a first voltage and a second terminal;a first switch having a first terminal coupled to the second terminal of the inductor and a second terminal configured to receive a first reference voltage;a second switch having a first terminal coupled to the second terminal of the inductor and a second terminal coupled to an output terminal of the boost switching regulator;a first capacitor having a first terminal coupled to the first terminal of the inductor and a second terminal;a first resistor having a first terminal coupled to the second terminal of the capacitor and a second terminal;a third switch having a first terminal coupled to the second terminal of the resistor and a second terminal configured to receive the first reference voltage; anda fourth switch having a first terminal coupled to the second terminal of the resistor and a second terminal coupled to a second reference voltage.2. The circuit of wherein the second reference voltage is an output voltage on the output terminal of the boost switching regulator.3. The circuit of wherein when the second terminal of the inductor is coupled to the first reference voltage claim 2 , the second ...

Blue phenolic moulding plastic and preparation method thereof

The invention relates to a blue phenolic moulding plastic and a preparation method thereof, the blue phenolic moulding plastic is prepared by sufficiently and evenly mixing organic reinforcing material, thermoplastic phenolic resin, curing agent, lubricating agent, inorganic filler, plasticizing agent and pigment, feeding the mixture into a roller press for plastication, and cooling and crushing the mixture. The phenolic moulding plastic not only has excellent light fastness and heat resistance, good aging resistance, dazzling color and little possibility of decolorization, but is also outstanding in injection molding performance and high in bending strength.

Power management system

A method according to one embodiment may include selecting at least one power supply, among a plurality of different power supplies, and coupling at least one available power supply to a load. The method may also include selecting at least one charging mode, among a plurality of different charging modes, to charge a rechargeable battery. Of course, many alternatives, variations, and modifications are possible without departing from this embodiment.

Analog circuit for calculating square and reciprocal of a current

An analog circuit for calculating square and reciprocal of a current is provided. It is an analog integrated circuit and can make the input and output signals become currents in the current field of the same type of analog integrated circuit. The output current can be the square or reciprocal of the input current. The square and reciprocal functions can be implemented by using three identical BJTs. Those three BJTs are independent and the bases and collectors of the BJTs are coupled to ground. Hence, the circuit can be implemented by the standard CMOS and can be applied to the other complicated system. In addition, the operational amplifier and the capacitor in the circuit are required to stabilize this circuit. This circuit has a simple structure.

Biological fermentation feedstuff, manufacturing method of biological fermentation feedstuff and special equipment of biological fermentation feedstuff

The invention relates to biological fermentation feedstuff, a production technology and special equipment. The production technology includes the steps of primary cleaning on raw materials, smashing, mixing, inoculating, packing and fermenting, and the technology is simple, convenient to implement and capable of achieving mechanized continuous production. According to a formula, cheap leftovers, such as apple residues, Chinese date powder, peanut shells, DDGS, liquor-sprayed corn bran and other biological matrixes of agricultural and sideline products are added with a premix and bacterium liquid, and then the biological fermentation feedstuff are manufactured through mixed fermentation. The manufactured biological fermentation feedstuff are stable in quality, good in palatability, comprehensive in nutrient value, high in content of viable bacteria, easy to store and transport and capable of serving as daily feedstuff for livestock and poultry for direct feeding and replacing 20-30% of full-value ...

Respiratory motion power generating device manufacturing process

Disclosed is a respiratory motion power generating device manufacturing process. The device comprises a plastic tube (2), a mask (1) is connected to the upper portion of the plastic tube (2), the lower portion is connected to an air bottle (4), and an one-way valve (3) is installed in the air bottle (4); the lower portion of the air bottle (4) is connected to a nozzle (7) inserted into a turbine generator (8); a piston component (6) is connected to the air bottle (4) through an exhausting tube (9), and a bandage (5) wraps the piston component (6). The device has the advantages that the device is capable of charging a mobile phone battery, mp3 and other small electrical appliances, is environment-friendly and low-carbon, is adaptive to long distance-travel and emergency situations and is simple in structure and convenient to use.

Cable power-drawing connection mechanism for in-orbit satellite maintenance

The invention discloses a cable power-drawing connection mechanism for in-orbit satellite maintenance. The mechanism comprises a housing, a main piston, a driving unit, an end cover, a power-drawing unit, a power-drawing piston, a power-drawing piston limiting reed and a main piston limiting reed. The main piston is arranged in a chute inside the housing and has two ends respectively connected with the driving unit and the main piston limiting reed, and the other end of the main piston limiting reed rests on the inner wall of the housing; the upper surface of the main piston is provided with a commutation mechanism; the driving unit is respectively connected with the main piston and the end cover; the power-drawing unit is fixedly installed on the power-drawing piston; the power-drawing piston is arranged in a chute dug in the upper surface e of the housing, one end of the power-drawing piston is provided with the power-drawing piston limiting reed, the other end of the power-drawing piston ...

Parallel bar formula full decoupling electron hydraulic braking system

The utility model provides a parallel bar formula full decoupling electron hydraulic braking system, includes: ecu, motor, brake pedal, connection brake pedal's secondary master cylinder, connection the footboard simulator of secondary master cylinder, connection brake pedal's decoupling zero device, master cylinder, wherein, be in be suitable for under ecu's the control selectivity will master cylinder coupling to motor or via the coupling of decoupling zero device to brake pedal, electronics hydraulic braking system possesses a mode and the 2nd mode at least, compared with the prior art, the utility model has the advantages of compact structure, the integrated level is high, easily arrange, can realize that braking energy retrieves and fail safe, especially be fit for pure electric vehicles and hybrid vehicle use.

Monolithic CMOS differential LNA with enhanced linearity

A low noise amplifier (LNA) is provided for a first block of a wireless receiver in a wireless communication system using CMOS technology. The LNA includes a first cascode amplifying module and a second cascode amplifying module, where an output signal of the first cascode amplifying module is fed to the second cascode amplifying module in order to cancel third-order intermodulation frequencies (IM3), such that input-referred third-order intercept point (IIP3) is increased and thus linearity of the LNA is improved.

Adaptive wireless receiver

An adaptive wireless receiver and method thereof is disclosed in the present invention. The receiver includes an antenna, a bandpass filter, a front-end unit and a demodulator. Elements inside the front-end unit can be reused when the receiver operates in a zero intermediate frequency (ZIF) mode and in a low intermediate frequency (LIF) mode. The front-end unit includes a first and second down-conversion mixer, an analog filter, a first and second analog-to-digital converter (ADC), and a digital filter.

Comfortable and wear-resistant rubber shoe sole and preparation method thereof

The invention relates to a comfortable and wear-resistant rubber shoe sole and a preparation method thereof. The comfortable and wear-resistant rubber shoe sole comprises 55-65 parts of natural rubber, 25-35 parts of styrene butadiene rubber, 10-15 parts of cis-butadiene rubber, 50-58 parts of carbon black, 8-12 parts of aluminum silicate, 5-10 parts of polyurethane, 1.8-2 parts of sulfur, 1.5-3 parts of an accelerant, 6-7 parts of a vulcanization activator, 15-21 parts of a rubber softening agent, and 2.3-3.8 parts of an anti-aging agent. Compared with the existing rubber shoe sole, the comfortable and wear-resistant rubber shoe sole has good wear resistance, as well as great comfort, environmental friendliness and safety.

Fusing agent sampling device

The utility model provides a fusing agent sampling device which comprises an ash hopper. An ash inlet pipe and a gas outlet pipe are connected to the upper end of the ash hopper, an ash discharging valve is arranged at the lower end of the ash hopper, the ash inlet pipe is provided with an ash inlet valve, the other end of the ash inlet pipe and the other end of the gas outlet pipe are connected with a main ash conveying pipeline, and the ends, connected with the main ash conveying pipeline, of the ash inlet pipe and the gas outlet pipe are sequentially arranged in the conveying direction of materials in the main ash conveying pipeline. The fusing agent sampling device is simple in structure, easy to operate and convenient to use. The fusing agent sampling device with the structure mode can ensure the timeliness of sampling, one time of sampling of each vehicle can be achieved, the sampling randomness is large, the reference of a laboratory report is high, the guiding to production is high ...

Offset detection method and offset detection device

The invention provides an offset detection method for detecting position offset during winding of an electrode assembly, and the method comprises the steps: obtaining a first image and a second image through a first camera and a second camera, the first image comprising an image of a first pole piece in the winding process of the electrode assembly, and the second image comprising an image of a second pole piece in the winding process; the second image comprises an image of a second pole piece in the winding process of the electrode assembly; according to the distance between the reference point in the first image and the specific position and the distance between the reference point in the second image and the specific position, whether the first camera and the second camera deviate or not is judged; according to the vertical distance from the reference point in the first image to the boundary of the first pole piece and the vertical distance from the reference point in the second image ...

Preparation method for directly synthesizing titanium dioxide from titanium-rich organic phase prepared from ilmenite

The present invention relates to a method for directly synthesizing titanium dioxide from a titanium-rich organic phase prepared from ilmenite, and more particularly to a method in which a titanium-rich acidolysis solution is obtained by an efficient ore dissolving technology, titanium ions are transferred to the organic phase by means of an effective titanium extractant to obtain a high-purity and titanium-rich organic phase, and then the titanium dioxide is directly synthesized in the organic phase. With this method, the dissolution rate of ilmenite can be effectively improved, the process flow is shortened and production costs are reduced, and titanium dioxide with high yield and high quality is obtained.

Electronic round of combined test platform

The utility model provides an electronic round of combined test platform comprises rack main part, vertical load analog system, a steering system and ground analog system. The rack main part is the main body frame of whole test bench for dismantle installation electronic round and various sensor, and play the support and the effect of connection to vertical load analog system and a steering system, vertical load analog system includes motor, ball, jack, triaxial force transducer and some connecting pieces for the load that with simulation wheel in vertical direction receives is exerted at the horizontal direction, a steering system includes worm gear, swizzle, angular transducer and some connecting pieces for make wheel steering, ground analog system is independent of the rack main part, including rotary drum, rotational speed torque sensing ware, measurement of power motor and some connecting pieces for the inertia of simulation road condition and car. The utility model discloses can be ...

Eyesight-improving tea of Chinese wolfberry fruit and chrysanthemum

The present invention discloses a Qijumingmu tea. Said tea is made up by using (wt%) 45-55% of fetid cassia seed, 4-6% of chrysanthemum flower, 8-12% of sophora flower bud, 8-12% of lycium berry 8-12% of mulberry and 12-17% of tea and adopting a certain production process. Said invented tea has the functions of removing intensive heat from the iver and improving acuity of sight, tonifying the kidney and relaxing the bowels.

Preparation method of high-performance phenolic resin

The invention relates to a preparation method of high-performance phenolic resin. The method comprises the following steps of: putting 100 parts of phenol and 70-80 parts of formaldehyde to an acidic reaction environment; and respectively carrying out two dewatering polycondensations to prepare high-performance phenolic resin. The phenolic resin has the advantages of suitable viscosity, even molecular weight distribution, low volatile content and stable product quality.

User satisfaction acquisition method and device, electronic equipment and storage medium

The embodiment of the invention provides a user satisfaction obtaining method and device, electronic equipment and a storage medium, and relates to the technical field of computers. The method comprises the following steps: acquiring a user type of a target user and DPI data of a target video in any playing time period; inputting the DPI data into the target video playing abnormity frequency prediction model, and outputting the playing abnormity frequency of the target video; and inputting the number of abnormal playing times and the user type into the target satisfaction prediction model, and outputting a satisfaction result. The DPI data during video playing is converted into the corresponding playing exception times, the user type of the target user and the playing exception times are combined to predict the satisfaction degree of the target user for video playing, higher prediction accuracy is achieved, the data are processed through the trained preset model, manual participation in ...

High-strength insulation vulcanized fiber board and manufacture process thereof

The invention relates to a high-strength insulation vulcanized fiber board and a manufacture process thereof, which is mainly manufactured from plant fibers based on the paper making technology, adopts multiple special chemical assistants of adhesive, wet strength agent, strengthening agent, water-resisting agent, brightener, defoamer, dispersant and the like, and endues the paper board with favorable machinability (such as pressure resistance, erosion resistance, cut-through resistance, carving resistance, no delamination when being pressed, no burst and the like) and multiple special functions of electrical insulation performance, moisture resistance, water resistance and the like. The invention adopts the production process technology of one-step molding, vacuum dewatering and high-temperature hot-press drying. Compared with the production process mode of the domestic product of the same type, the invention has the advantages of lower production cost, less equipment investment, simple ...

Application of YLL3 in preparation of medicine for treating osteogenesis insufficiency

The invention relates to application of a compound YLL3 in preparation of a medicine for treating osteogenesis insufficiency. Experiments prove that the compound YLL3 can reduce the fracture number of osteogenesis insufficiency, so that the compound YLL3 can be used for preparing the medicine for treating osteogenesis insufficiency.

VCO circuit with broad tuning range and amplitude control

A voltage-controlled oscillator circuit. A pair of inductors are coupled to a first power source. A pair of capacitors respectively coupled between a variable resistor and the pair of inductors in serial. A pair of first switches respectively coupled between the pair of capacitors and a second power source. The first switch of the pair has a first control gate coupled to a connection point of the other first switch and the corresponding capacitor.

Verfahren zum Herstellen eines Perlglanzpigments mittels Koextraktion aus in Salzsäure gelöstem Ilmenit

Die vorliegende Erfindung stellt ein Verfahren zum Herstellen eines Perlglanzpigments bereit. Bei dem erfindungsgemäßen Verfahren wird nach Lösen der Titan- und Eisenionen im Ilmenit mittels einer Salzsäure bei einer bestimmten Temperatur und einem bestimmten Druck das in Säure gelöste Eisen(II)-chlorid durch Zugabe eines Chlorwasserstoff-Gases als Ablagerung abgeschieden, wobei nach Oxidierung eine Koextraktion für die verbleibenden Titan- und Eisenionen mittels eines Extraktionsmittels erfolgt, um eine Abtrennung von anderen farbigen Ionen zu ermöglichen, wobei durch schrittweise Anti-Extraktion und Anreicherung eine Lösung mit hohem Titan-Acylchlorid-Gehalt und ein wasserhaltiges Oxid mit Eisen erhalten werden, wobei die Titan-Acylchlorid-Lösung Anwendung bei Glimmertitan-basiertem Umhüllungsstoff für Perlglanzpigment und auch bei der Herstellung des Titandioxids findet, während das wasserhaltige Eisenoxid nach Säuerung zusammen mit oxidiertem Eisen(II)-chlorid für Eisen-basierten Umhüllungsstoff ...

Switching regulator current sensing circuits and methods

In one embodiment, a switching regulator includes an inductor, a first switch, and a second switch. The first and second switches generate current in the inductor. Inductor current may flow through the second switch with both a positive and negative polarity. Voltages on terminals of the second switch may be sensed, and an offset applied to generate a level shifted signal. In one embodiment, the switching regulator is a boost switching regulator, and the offset is generated using a current source. Matched MOS transistor switches may be used to couple voltages on terminals of the second switch to amplifier inputs, and the offset is introduced across an MOS switch coupled between one amplifier input and the output.

Service quality evaluation method and device and electronic equipment

The embodiment of the invention provides a service quality evaluation method and device, electronic equipment and a computer readable storage medium, and relates to the technical field of computers. The method comprises the steps of obtaining to-be-tested data of a target service; and performing prediction processing on the to-be-tested data through a preset predictor to obtain a prediction result of the target service. Wherein the preset predictor is obtained by training the dial test data obtained by carrying out dial test on the sample service on the basis of different service types and application scenes, so that prediction is carried out in combination with the actual service and the service data in the application scenes, the prediction accuracy of the preset predictor is improved, and the accuracy of service quality evaluation is improved.

Air-oxygen mixed concentration proportioning algorithm for electric control breathing machine

The invention relates to the technical field of medical equipment manufacturing, in particular to an air-oxygen mixed concentration proportioning algorithm for an electric control respirator, which comprises the following steps of: acquiring an empirical formula, determining the optimal following delay of the oxygen concentration along with the change of the total flow, and controlling the oxygen flow by using the empirical formula. The empirical formula is y = (a-0.21) * b/(1-0.21), y is the oxygen flow, a is the oxygen concentration, and b is the total flow. According to the method, the oxygen flow needing to be proportioned can be calculated by substituting the set total flow and oxygen concentration into an algorithm, then oxygen proportioning control is simplified, meanwhile, the oxygen flow is controlled to change along with the total flow only by applying a conventional control algorithm, and the precision of the oxygen concentration can be within 5% after air-oxygen proportioning ...

Power management system

A method according to one embodiment may include selecting at least one power supply, among a plurality of different power supplies, and coupling at least one available power supply to a load. The method may also include selecting at least one charging mode, among a plurality of different charging modes, to charge a rechargeable battery. Of course, many alternatives, variations, and modifications are possible without departing from this embodiment.

Method of improving retention and drainage in a papermaking process using a diallyl-N,N-disubstituted ammonium halide-acrylamide copolymer and a structurally modified cationic polymer

A method of increasing retention and drainage in a papermaking furnish comprising adding to the furnish an effective amount of a diallyl-N,N-disubstituted ammonium halide/acrylamide copolymer and an effective amount of a cationic structurally-modified water-soluble polymer, the cationic structurally-modified water-soluble polymer prepared by initiating polymerization of an aqueous solution of from about 95 to about 5 mole percent of an acrylamide monomer and from about 5 to about 95 mole percent of a cationic monomer under free radical polymerization conditions to form a polymer solution and adding at least one structural modifier to the polymer solution after at least 30% polymerization of the monomers has occurred.

Circuits and methods for controlling a boost switching regulator based on inductor current

The present disclosure pertains to circuits and methods for controlling a boost switching regulator based on inductor current. An input voltage is coupled to a first terminal of an inductor and the second terminal of the inductor is alternately coupled between a reference voltage and a boosted output voltage. The input voltage is further coupled to a first terminal of an integrator circuit, and a second terminal of the integrator circuit may be alternately coupled between the reference voltage and the boosted output voltage, for example, to produce a voltage corresponding to a current in the inductor. The present circuit may be used for voltage control or current control modes, or both, in a boost switching regulator.

Low dropout voltage regulator

Can simulate random pavement's rotary drum system

The utility model provides a can simulate random pavement's rotary drum system, includes rotary drum, hold -in range, band pulley, shot -blast unit, collection device, the hold -in range is totally two, and in the laminating each other of rotary drum department, laminate with the wheel tire with rotary drum laminating, the upper hold -in range outside in lower floor's hold -in range inboard simultaneously, the shot -blast unit is located two hold -in ranges part two position between the area of not laminating, and is close to the hold -in range and drives towards rotary drum one side, collection device is located two hold -in ranges part two position between the area of not laminating, and is close to the hold -in range and keeps away from rotary drum one side. The utility model discloses chassis dynamometer can be be applied to, the test of the performances such as durability, dynamic property of car accomplished. Compare with current rotary drum system, the utility model discloses can ...

Preparation method of high-performance phenolic resin

The invention relates to a preparation method of high-performance phenolic resin. The method comprises the following steps of: putting 100 parts of phenol and 70-80 parts of formaldehyde to an acidic reaction environment; and respectively carrying out two dewatering polycondensations to prepare high-performance phenolic resin. The phenolic resin has the advantages of suitable viscosity, even molecular weight distribution, low volatile content and stable product quality.

Alstonia-leaf tea bag and processing method thereof

The invention relates to an alstonia-leaf tea bag and a processing method thereof. The tea bag is obtained by mixing the alstonia-leaves and tea in a product or a tea finished product in proportion, has the quality style of tea and the efficacy of the alstonia-leaves, enriches the drinking health-care efficacy of traditional tea, and expands the application field of the alstonia-leaves. The tea bag can be produced by the tea finished product or tea on process, wherein the alstonia-leaves and de-enzyming tea leaves are mixed uniformly by weight ratio of 1:8-16 to prepare an alstonia-leaf green tea bag; the alstonia-leaf and tea withering leaves are mixed uniformly according to the weight ratio of 1:11-22 to prepare an alstonia-leaf black tea bag; and the alstonia-leaves are uniformly mixed with green broken tea, black broken tea and Pu'er tea leaves respectively to prepare an alstonia-leaf green tea bag, an alstonia-leaf black tea bag or an alstonia-leaf Pu'er tea bag by weight ratio of ...

Boost regulator having adaptive dead time

A boost regulator that selectively operates in an asynchronous mode, a synchronous mode, or an adaptive mode. In the adaptive mode, the boost mode regulator controls a high side switch according to an adaptive dead time. Adaptive mode allows the boost regulator to operate more efficiently than in asynchronous mode.

ADAPTIVE WIRELESS RECEIVER

PROBLEM TO BE SOLVED: To provide an adaptive wireless receiver and method which reduces a silicon area, has a simple configuration and is highly integrated, and supports multiple standards and/or multiple frequency bands. SOLUTION: The receiver includes an antenna 110, a bandpass filter 120, a front-end unit 430 and a demodulator 140. Elements inside the front-end unit can be reused when the receiver operates in a zero intermediate frequency (ZIF) mode and in a low intermediate frequency (LIF) mode. The front-end unit includes a first and second down-conversion mixer, an analog filter 434, a first and second analog-to-digital converter (ADC), and a digital filter 437. COPYRIGHT: (C)2008,JPO&INPIT ...

Bio-fermentation feed, preparation method and special equipment thereof

The invention relates to a bio-fermentation feed, a preparation process and special equipment thereof. The production process includes raw material preliminary cleaning, crushing, mixing, inoculation, packing and fermentation. The process is simple and is convenient to operate, and can realize mechanized continuous production. The formula utilizes cheap agricultural and sideline product leftovers like apple pomace, jujube powder, peanut shell, DDGS, slurry spraying corn peel and other biological matrixes, a premix and a bacterial liquid are added into the ingredients to carry out mixing and fermentation, thus obtaining the bio-fermentation feed. The prepared bio-fermentation feed has the characteristics of stable quality, good palatability, comprehensive nutritional value, high live bacteria content, and convenient storage and transportation, can be directly used for feeding as the livestock and poultry daily ration, also can substitute 20%-30% of complete formula feed, truly realizes food ...

Ultrahigh-speed high-lift turbofan system for breathing machine

The invention discloses an ultra-high-speed high-lift turbofan system for a breathing machine, and belongs to the technical field of medical equipment manufacturing, the ultra-high-speed high-lift turbofan system comprises a mold, a first ejection assembly, a second ejection assembly and a fixed base, the fixed base is in a U shape and is located outside the mold, and a mold cavity is formed in the mold; the bottom of the mold cavity is slidably connected with the first ejection assembly, the bottom of the first ejection assembly is fixed in the fixed base, driving assemblies for driving the mold to move up and down are arranged on the two sides of the mold, the second ejection assembly is further fixed in the fixed base, and the second ejection assembly is slidably connected to the two sides of the mold cavity; the mold can achieve bottom ejection demolding and side face prizing demolding of parts, can be suitable for parts of different shapes, and improves the machining efficiency.

Wound electrode assembly measuring method and device

A measurement method and apparatus for a wound electrode assembly (102), the measurement method comprising: acquiring pixel equivalent parameters corresponding to an ith circle of a wound reference electrode assembly (1 '), including a first pixel equivalent of a first anode pole piece (11') and a second pixel equivalent of a first cathode pole piece (12 ') of the reference electrode assembly (1'); in the process of winding the ith circle of the to-be-detected electrode assembly (1), shooting an image of a second anode pole piece (11) of the to-be-detected electrode assembly (1), obtaining a first pixel coordinate of the width edge of the second anode pole piece (11) from the image, shooting an image of a second cathode pole piece (12) of the to-be-detected electrode assembly (1), and obtaining a second pixel coordinate of the width edge of the second cathode pole piece (12) from the image; and according to the first pixel equivalent and the second pixel equivalent corresponding to the ...

Firing mount fixed establishment of perforator

The utility model discloses a firing mount fixed establishment of perforator, including the rifle body and firing mount, its characterized in that, the firing mount device internal at the rifle, the fixed loop is connected to the one end of firing mount, the backing ring is connected to the other end, device has a shop bolt on the fixed loop, the internal wall of rifle is equipped with the logical keyway that matees with the shop bolt, the firing mount is gone into the rifle and is passed through the axial fixity device with fixed loop and backing ring axial fixity after internal from leading to a keyway end device. Firing mount fixed establishment of perforator carry out the accurate positioning to circumference and the axial of firing mount assembly, ensure that perforating bullet and blind hole are accurate to counterpoint that it can fluidic loss to reduce to gather, can effectively establish the oil gas passageway between pit shaft and the stratum, for subsequent acidizing, fracturing ...

Preparation method of 2-trichlorophenylmethyl resin

The invention discloses a preparation method of 2-trichlorophenylmethyl resin. The preparation method is characterized by comprising the following steps: swelling 2-trichlorophenylmethyl monomer with double bonds, styrene and divinyl benzene by adopting polystyrene microspheres, and preparing 2-trichlorophenylmethyl resin microspheres by taking benzoyl peroxide as an initiator, polyvinyl alcohol as a stabilizer and sodium dodecyl sulfate as an emulsifier. The uniform and single-dispersion 2-trichlorophenylmethyl resin microspheres can be prepared at one step by adopting a seed method, the method is simple, chemical modification is not required after the microspheres are obtained, the environment pollution is reduced, the 2-trichlorophenylmethyl resin microspheres can be widely applied as solid-phase synthesized resin, and has high market application values.

Verfahren zum Herstellen eines Perlglanzpigments mittels Koextraktion aus in Salzsäure gelöstem Ilmenit

Verfahren zum Herstellen eines Perlglanzpigments mit einer Eisen(III)-oxid-Umhüllungsschicht (Fe 2 O 3 ) oder Titan(IV)-oxid-Umhüllungsschicht (TiO 2 ) oder Fe 2 O 3 /TiO 2 -Umhüllungsschicht mittels Koextraktion aus Ilmenit, umfassend folgende Schritte: (1) Es werden Salzsäure und Ilmenit in einem Säure-Erz-Massenverhältnis von 0,5-15:1 in einen Reaktor zugegeben, wobei bei gleichzeitigem Rühren die Temperatur auf eine Temperatur T1 zwischen 30°C und 95°C erhöht wird und bei dieser Reaktionstemperatur T1 eine Reaktion erfolgt, wobei im Zuge der Reaktion ein Chlorwasserstoff-Gas zugegeben und der Systemdruck P höher als der Atmosphärendruck beibehalten wird, wobei nach der Reaktion das Reaktionsgemisch unmittelbar gefiltert wird, woraus sich ein Filtrat ergibt, welches abgekühlt wird und sich einer Fest-Flüssig-Trennung unterzieht, woraus sich dann eine Salzsäurelösung A0 mit Titan- und Eisenionen und eine Eisen(II)-chlorid-Ablagerung C0 ergeben, wobei dann entweder eine durch Zentrifugation erhaltene saubere Eisen(II)-chlorid-Ablagerung C0 ohne weiteres kalziniert wird, um ein Eisenoxidrot-Pigment C1 zu erhalten, oder alternativ die Ablagerung C0 mittels eines Oxidierungsmittels oxidiert wird, woraus sich ein Eisen(III)-chlorid-Produkt C2 ergibt, welches im Wasser gelöst wird, um eine Eisen(III)-chlorid-Lösung III zu erhalten, (2) Es wird die im Schritt (1) erhaltene Salzsäurelösung A0 mit Titan- und Eisenionen in einen Koextraktor zugegeben, in dem mittels eines Koextraktionsmittels eine einstufige oder mehrstufige Koextraktion erfolgt, wobei die Extrakte als organische Phase aus den jeweiligen Extraktionsstufen kombiniert werden, um eine Titan- und Eisen-reiche Extraktlösung, also eine organische Phase A1, zu erhalten, wobei die nach der einstufigen oder mehrstufigen Extraktion verbleibende Wasserphase ein Raffinat mit hohem Säuregrad und Ionen unerwünschter Farbe wie Mn, V, Cr, also eine Wasserphase B1, ist, welches Raffinat keine Eisen- und Titanionen enthält, ...

Boost Regulator Having Adaptive Dead Time

A boost regulator that selectively operates in an asynchronous mode, a synchronous mode, or an adaptive mode. In the adaptive mode, the boost mode regulator controls a high side switch according to an adaptive dead time. Adaptive mode allows the boost regulator to operate more efficiently than in asynchronous mode. 1. A boost regulator , comprising:a low side switch coupled to a switching node;a high side switch coupled to the switching node and to an output node; anda boost mode regulator that controls the low side switch and the high side switch to selectively operate in one of an asynchronous mode, a synchronous mode, and an adaptive mode.2. The boost regulator of claim 1 , wherein the boost mode regulator switches the low side switch according to a duty cycle claim 1 , wherein the duty cycle is adjustable claim 1 , and wherein the boost mode regulator increases the duty cycle to increase an output voltage at the output node.3. The boost regulator of claim 1 , wherein in the synchronous mode claim 1 , the boost mode regulator controls the low side switch and the high side switch to operate such that the high side switch conducts when the low side switch does not conduct claim 1 , and the high side switch does not conduct when the low side switch conducts.4. The boost regulator of claim 1 , wherein in the asynchronous mode claim 1 , the boost mode regulator controls the high side switch to not conduct claim 1 , and the boost mode regulator switches the low side switch according to a duty cycle.5. The boost regulator of claim 1 , wherein the boost regulator has an input voltage and an output voltage claim 1 ,wherein in the adaptive mode, the boost mode regulator controls the high side switch according to an adaptive dead time, wherein the adaptive dead time changes as a voltage difference between the input voltage and the output voltage changes,wherein in the adaptive mode, when the low side switch switches from conducting to not conducting, the boost mode ...

Controller for a DC to DC converter having linear mode and switch mode capabilities

Environment-resistant high-reliability gigabit Ethernet transformer

The invention relates to an environment-resistant high-reliability gigabit Ethernet transformer which comprises an outer shell, leading-out ends, four groups of isolation coils and common-mode coils, organic silica gel, epoxy resin glue and isolation walls. Four enameled wires are twisted into a twisted shape and wound on an isolation magnetic core and a common-mode magnetic core to form an isolation coil and a common-mode coil, and a single wire and a twisted pair at the tail end of each coil are led out from different sides to jointly form a primary coil and a secondary coil of the coil; the four groups of coils are uniformly coated with organic silica gel through a surface impregnation process, after thermocuring, the coils are sequentially and centrally placed in four cavities formed by separating walls in the outer shell in a single row, and lead-out wires of the coils are sequentially welded and conducted with lead-out ends in a tin soldering manner; and finally, carrying out comprehensive ...

POLARIZING SHEET, DISPLAY SCREEN, TERMINAL, AND METHOD FOR MANUFACTURING POLARIZING SHEET

A polarizing sheet includes a base layer, and a polarizing layer attached to the base layer. The polarizing layer includes, in a same plane, a combination of any two or more of a first region, a second region, or a third region. The first region, the second region and the third region have different light transmission properties.

LOW DROPOUT VOLTAGE REGULATOR

PROBLEM TO BE SOLVED: To provide stability over a wide range of currents supplied by an LDO (low dropout voltage regulator). SOLUTION: A low dropout voltage regulator (LDO) includes a regulating circuit, an amplifier, and a first compensating path. The regulating circuit is configured to receive an input signal at an input terminal and provide an output signal at an output terminal in response to a control signal received at a control terminal. The amplifier may have a first input terminal coupled to a first input path and an output terminal coupled to the control terminal of the regulating circuit via a path to provide the control signal. The first compensating path is coupled between a first node on the first input path and a second node on the path coupling the output terminal of the amplifier to the control terminal of the regulating circuit, the first compensating path including a first compensating capacitor. COPYRIGHT: (C)2006,JPO&NCIPI ...

Chuanqisan for treating cervical spondylopathy and preparation method

The invention discloses a szehuan lovage root powdered medicine used for treating cervical spondylosis and the preparation method thereof, which is prepared according to proportion by tortoise plastron, suberect spatholobus stem, Danshen root, radix astragali, angelica, fortune's drynaria rhizome, eucommia bark, pyrite, szechuan lovage rhizome and himalayan teasel root processed respectively in advance. The invention has the functions of invigorating qi, activating blood circulation, soothing the veins, eliminating stasis and relieving pain. The medicine disclosed by the invention has the advantages of high curative effect, rapid effectiveness show, no toxic and side effect and low cost.

Method for preparing superparamagnetic polymer microspheres

Biological fermented feed and preparation method and special equipment of biological fermented feed

The invention relates to a biological fermented feed and a production process and special equipment of the biological fermented feed. The production process comprises the following steps: preliminarily cleaning raw materials, crushing, mixing, inoculating, packaging, and fermenting, and is simple, is convenient to operate, and is capable of realizing mechanized continuous production. The biological fermented feed is prepared from low-price agricultural and sideline product leftovers such as apple pomace, red date powder, peanut shell, DDGS, pulp-sprayed corn bran and other biological matrix by adding a premix and a bacterium solution through mixing and fermentation. The prepared biological fermented feed is stable in quality, excellent in palatability, comprehensive in nutritive value, high in content of viable organisms, and suitable for storage and transportation, and can be used for a poultry ration for directly feeding poultry, and can be used for replacing 20-30 percent of complete ...

CONNECTION TERMINAL PATTERN AND LAYOUT FOR THREE-LEVEL BUCK REGULATOR

Certain aspects of the present disclosure generally relate to a connection terminal pattern and layout for a three-level buck regulator. One example electronic module generally includes a substrate, an integrated circuit (IC) package disposed on the substrate and comprising transistors of a three-level buck regulator, a capacitive element of the three-level buck regulator disposed on the substrate, and an inductive element of the three-level buck regulator disposed on the substrate. In certain aspects, the capacitive element and the inductive element may be disposed adjacent to different sides of the IC package. 1. An electric module , comprising:a substrate;an integrated circuit (IC) package disposed on the substrate and comprising transistors of a three-level buck regulator;a capacitive element of the three-level buck regulator disposed on the substrate; andan inductive element of the three-level buck regulator disposed on the substrate, the capacitive element and the inductive element being disposed adjacent to different sides of the IC package.2. The electric module of claim 1 , wherein the capacitive element and the inductive element are disposed on the same layer of the substrate.3. The electric module of claim 1 , wherein the IC package comprises:at least one first connection terminal coupled to a first terminal of the capacitive element via a first trace of the substrate;at least one second connection terminal coupled to a switching node of the three-level buck regulator and coupled to the inductive element via a second trace of the substrate; andat least one third connection terminal coupled to a second terminal of the capacitive element via a third trace of the substrate.4. The electric module of claim 3 , wherein:the at least one first connection terminal is located at a first side of a terminal pattern of the IC package;the at least one second connection terminal is located at a second side of the terminal pattern; andthe at least one third connection ...

Melamine formaldehyde mould plastic and preparation method thereof

The invention provides a melamine formaldehyde mould plastic and a preparation method thereof. The preparation method comprises the following steps: by adopting boron-modified melamine formaldehyde resin as matrix resin, adding reinforced fibers, inorganic filler and auxiliaries, and performing a kneading process and a plastifying process, thereby preparing the melamine formaldehyde mould plastic. The melamine formaldehyde mould plastic prepared by the preparation method disclosed by the invention has excellent heat resistance and dimension stability as well as relatively good mechanical performance.

Flux sampling device and method

The invention provides a flux sampling device. The flux sampling device comprises an ash bucket, wherein an ash inlet pipe and an air outlet pipe are connected to the upper end of the ash bucket; an ash discharging valve is arranged at the lower end of the ash bucket; an ash inlet valve is arranged on the ash inlet pipe; an air outlet valve is arranged on the air outlet pipe; the other ends of the ash inlet pipe and the air outlet pipe are connected with a ash conveying main pipeline respectively; connection ends of the ash inlet pipe and the air outlet pipe and the ash conveying main pipeline are sequentially arranged in the conveying direction of a material inside the ash conveying main pipeline respectively. The invention further provides a flux sampling method using the flux sampling device. According the flux sampling method, timely sampling can be performed once for each trolley, the sampling randomness is large, the test result is strong in reference, the production guidance is high ...

Aluminum electrolysis cell crust breaking air cylinder hammerhead jamming and falling-off detection device

The utility model discloses an aluminum electrolysis cell crust breaking air cylinder hammerhead jamming and falling detection device which comprises an electrolysis cell body and a warning lamp, a partition plate is fixed at the upper end of the electrolysis cell body, an air cylinder body is installed on the inner side of the partition plate, and an air cylinder hammerhead is installed at the lower end of the air cylinder body. The upper end of the air cylinder hammer is connected with the tail end of a power line, the outer surface of the power line is connected with a support, the support is fixed to the inner wall of a protection coil, and one end of the protection coil penetrates through the surface of the partition plate to be connected with the lower end of a resistance insulation detector. According to the aluminum electrolysis cell crust breaking air cylinder hammerhead jamming and falling detection device, the air cylinder body is fixedly supported through the partition plate ...

Fixed silica gel keyboard of conical column

The utility model discloses a fixed silica gel keyboard of conical column, belong to the computer peripheral equipment field, it is poor that the waterproof dustproof effect of traditional silica gel keyboard is solved to this technique, the technical problem who is difficult for mould production, this silica gel keyboard includes the casing, silica gel keyboard membrane, the circuit board, the fixed crimping of silica gel keyboard membrane is at circuit board upper surface, silica gel keyboard membrane edge and the fixed joint of casing, silica gel keyboard membrane is by silica gel key, keyboard membrane air flue, sealing strip and fixed column constitute, silica gel keyboard membrane bottom is provided with a plurality of cross -sections and is conical fixed column, it pegs graft together to correspond the fixed orifices that sets up on fixed column and the circuit board, silica gel keyboard membrane is provided with the sealing strip with casing joint department, the recess joint that ...

Head -mounted display apparatus

The utility model provides a head -mounted display apparatus, including base, bandeau structure and be fixed in the at least bandeau paragraph formula adjustment module of base. This base includes an at least window and corresponding and set up the at least display module in this base with this at least window, and this bandeau structure includes bandeau tooth portion, and should at least bandeau paragraph formula adjustment module include with the bandeau tooth engaged with of the portion bandeau adjustment gear structure of bandeau structure, wherein, the one end of bandeau structure is answered bandeau rotating of gear structure of adjustment and is carried out the removal of paragraph formula to it stretches into the length in this base to change this bandeau structure. The utility model discloses but its bandeau structure is adjusted so that it can stabilize in user's head to the paragraph formula, and the convenient easy operation of this adjustment procedure, convenient to use.

Method for preparing superparamagnetic polymer microspheres

The invention provides a method for preparing monodispersed superparamagnetic polymer microspheres, which comprises the following steps of: swelling the polymer microspheres by adopting the swelling technology, and permeating oleic acid molecules into the polymer microspheres; raising the temperature, so that iron oleate is subjected to thermal decomposition in the microspheres to synthesize magnetic ferriferrous oxide nanoparticles, and the superparamagnetic polymer microspheres can be obtained. The prepared superparamagnetic polymer microspheres are uniform in grain diameter, controlled in magnetic content and stable in chemical properties, have the specific saturation magnetization of between 10 and 20 emu/g, and have potential application value in bioseparation.

TERMINAL

Disclosed is a terminal, including: a display screen including a sensor area, the sensor area being a transparent display area on the display screen; a sensor disposed below the display screen, the sensor having a photosensitive portion; and a color-changing layer above the display screen, where the photosensitive portion of the sensor is within a first orthographic projection range of the sensor area, and the sensor area is within a second orthographic projection range of the color-changing layer; the transparent display area is transparent when the sensor is in operation; and the color-changing layer is configured to switch between a colorless state and a colored state. 1. A terminal , comprising:a display screen comprising a sensor area, the sensor area being a transparent display area on the display screen;a sensor disposed below the display screen, the sensor having a photosensitive portion; anda color-changing layer above the display screen,wherein the photosensitive portion of the sensor is within a first orthographic projection range of the sensor area, and the sensor area is within a second orthographic projection range of the color-changing layer;the transparent display area is transparent when the sensor is in operation; andthe color-changing layer is configured to switch between a colorless state and a colored state.2. The terminal according to claim 1 , wherein the display screen further comprises a polarizer layer claim 1 , an encapsulation layer claim 1 , an organic light emitting diode (OLED) layer claim 1 , a drive circuit layer claim 1 , a glass substrate layer and a light shielding layer arranged in sequence;an aligned opening area is on the polarizer layer, the glass substrate layer and the light shielding layer; andthe sensor area is on the encapsulation layer, the OLED layer, and the drive circuit layer corresponding to the opening area.3. The terminal according to claim 1 , wherein the display screen further comprises a polarizer layer claim 1 ...

Spraying and immersion type clothes washing mechanism and spraying and immersion type washing machine

The invention provides a spraying and immersion type clothes washing mechanism and a spraying and immersion type washing machine. The spraying and immersion type clothes washing mechanism is characterized by comprising a water storage part, a drum part and a pressure sprayer part, wherein the drum part comprises three layers of horizontal meshed drums which are a first meshed drum, a second meshed drum and a third meshed drum from inside to outside respectively; a traditional machine wash area is formed between the first meshed drum and the second meshed drum; a spraying and immersion type washing area is formed between the second meshed drum and the third meshed drum; a U-shaped groove is formed in the water storage part, and the drum part is located inside the U-shaped groove; a gear pump, water pipes and at least two rows of pressure sprayers are arranged at the pressure sprayer part; the at least two rows of the pressure sprayers are located inside the first meshed drum and the gap ...

VCO circuit with board tunning range and amplitude control

A voltage-controlled oscillator circuit. A pair of inductors are coupled to a first power source. A pair of capacitors respectively coupled between a variable resistor and the pair of inductors in serial. A pair of first switches respectively coupled between the pair of capacitors and a second power source. The first switch of the pair has a first control gate coupled to a connection point of the other first switch and the corresponding capacitor.

Method for achieving electromagnetic shielding on display equipment by using display panel made of non-metallic materials

The invention discloses a method for achieving electromagnetic shielding on display equipment by using a display panel made of non-metallic materials. The display equipment comprises the display panel, shielding glass, an LCD screen and a display screen fixing cover. The LCD screen is fixed to the display screen fixing cover through screws, the shielding glass is pasted on the display screen fixing cover through conductive double-sided adhesive tape, the main device needing electromagnetic shielding, namely the LCD screen is closed in a cavity formed by the display screen fixing cover and the shielding glass, and the display panel is made of the non-metallic materials. According to the method, the display panel is not in charge of the function of electromagnetic shielding, and therefore the material of the display panel is not limited within metal, the display panel is made of plastic and is light in weight and low in cost, and meanwhile the structural form of barb connection is designed ...

Substrate polishing device, polishing head and substrate positioning protection assembly

The invention relates to a substrate polishing device, a polishing head and a substrate positioning protection assembly. The substrate positioning protection assembly comprises a positioning check ring and a cleaning piece. The cleaning piece is connected with the positioning check ring and arranged in the circumferential direction of the positioning check ring, the cleaning piece is provided with a cleaning part used for being matched with the grinding pad in an abutting mode, and the cleaning part is provided with at least one diamond. On one hand, in the polishing operation process of the base plate, the base plate is located in the positioning hole, in this way, the positioning check ring plays a role in containing, protecting and positioning the base plate, and the base plate cannot slip; and on the other hand, diamonds on the cleaning part can synchronously make contact with the surface of the grinding pad, and the hardness of the diamonds is high, so that residues on the grinding ...

Adaptive wireless receiver

An adaptive wireless receiver and method thereof is disclosed in the present invention. The receiver includes an antenna, a bandpass filter, a front-end unit and a demodulator. Elements inside the front-end unit can be reused when the receiver operates in a zero intermediate frequency (ZIF) mode and in a low intermediate frequency (LIF) mode. The front-end unit includes a first and second down-conversion mixer, an analog filter, a first and second analog-to-digital converter (ADC), and a digital filter.

Ruggedized computer with labyrinth electromagnetic shielding structure

The invention provides a ruggedized computer with a labyrinth electromagnetic shielding structure. The ruggedized computer comprises a housing upper cover, a housing body, an interface circuit board and a cooler system; the edge of the housing upper cover is provided with two ribs; the edge, in butt joint with the housing upper cover, of the housing body is provided with grooves; the ribs and the grooves are inserted together to form the labyrinth shielding structure; the housing upper cover and the housing body are in zero-clearance fit to form the labyrinth shielding structure; no conducting filler medium is used; contact face planarity and surface roughness are majorly guaranteed during processing, and raised edges are chamfered to allow convenient assembly.

Offset detection method and offset detection device

The invention provides an offset detection method and an offset detection device which can be used for detecting position offset during winding of an electrode assembly, and the method comprises the steps: an image acquisition step: in the winding process of the electrode assembly, a plurality of first images and a plurality of second images are acquired through a shooting unit, the first images comprise first pole pieces, and the second images comprise second pole pieces; the second image comprises a second pole piece; an image matching step of matching the first image and the second image, the first image and the second image including the same or corresponding identification objects, the identification objects being parts periodically formed on each winding layer of the electrode assembly; and an offset judgment step of judging whether the electrode assembly is offset according to the boundary of the first pole piece in the first image and/or the boundary of the second pole piece in ...

Rubber preparation process

The invention relates to the technical field of rubber processing, in particular to a rubber preparation process. The bearing capacity of the rubber column is improved, and the service life of the rubber column is prolonged. A rubber preparation technology comprises the following steps that S1, waste rubber is taken, impurities on the surface of the waste rubber are removed, and the waste rubber is cleaned up; s2, a plurality of metal strips are sequentially inserted into a forming device; s3, the distribution form of the multiple metal strips is adjusted, and the trend of the metal strips is in a spiral shape; s4, rubber in a molten state is injected into the forming device, so that the multiple metal strips are covered with the rubber; s5, after the molten rubber is cooled and shaped, the rubber is cut in the trend of the metal strip; and S6, the two ends of the rubber are cut off, and the spiral rubber internally provided with metal is obtained.

Monolithic CMOS differential LNA with enhanced linearity

A low noise amplifier (LNA) is provided for a first block of a wireless receiver in a wireless communication system using CMOS technology. The LNA includes a first cascode amplifying module and a second cascode amplifying module, where an output signal of the first cascode amplifying module is fed to the second cascode amplifying module in order to cancel third-order intermodulation frequencies (IM3), such that input-referred third-order intercept point (IIP3) is increased and thus linearity of the LNA is improved.

High heat resistance glass fiber reinforced injection type phenolic moulding material and preparation method thereof

The invention relates to a high heat resistance glass fiber reinforced injection type phenolic moulding material and a preparation method thereof. The high heat resistance glass fiber reinforced injection type phenolic moulding material is prepared from an organic reinforced material, thermoplastic phenolic resin, curing agent, inorganic filler, lubricant, pigment and an inorganic reinforcing material which are put in a mixer in sequence for sufficiently and evenly mixing, are delivered to a roll squeezer for plastifying, and are cooled and crushed. The high heat resistance glass fiber reinforced injection type phenolic moulding material has good injection technical performance and excellent heat resistance; and by using the preparation method of the invention, not only the operation is simple and convenient, but also the prepared high heat resistance glass fiber reinforced injection type phenolic moulding material has stable technical performance.

Intelligence system of watering flowers

The utility model discloses an intelligence system of watering flowers belongs to the intelligent household equipment field. Prior art's intelligence system of watering flowers structure is complicated, cost an arm and a leg, and ordinary family can't bear. An intelligence system of watering flowers, includes water spray mechanism, sprinkler system connects a control chip, control chip connects a sensor that is used for detecting soil respectively, be used for showing the display of data, be used for supplementary plant carries out photosynthesis's lighting circuit. The utility model discloses can be accurate the humidity of detection soil, the humidity of control soil and the illumination of plant, simple structure, economical and practical.

ADAPTIVE COMBINATION POWER SUPPLY CIRCUIT AND CHARGING ARCHITECTURE

Certain aspects of the present disclosure generally relate to an adaptive combination power supply circuit. The adaptive combination power supply circuit may be capable of switching between performing as a three-level buck converter and as a divide-by-two charge pump. One example power supply circuit generally includes a first transistor; a second transistor coupled to the first transistor via a first node; a third transistor coupled to the second transistor via a second node; a fourth transistor coupled to the third transistor via a third node; a capacitive element having a first terminal coupled to the first node and a second terminal coupled to the third node; an inductive element having a first terminal coupled to the second node; and a switch having a first terminal coupled to the first terminal of the inductive element, the switch having a second terminal coupled to a second terminal of the inductive element. 1. A power supply circuit comprising:a first transistor;a second transistor coupled to the first transistor via a first node;a third transistor coupled to the second transistor via a second node;a fourth transistor coupled to the third transistor via a third node;a capacitive element having a first terminal coupled to the first node and a second terminal coupled to the third node;an inductive element having a first terminal coupled to the second node; anda switch having a first terminal coupled to the first terminal of the inductive element, the switch having a second terminal coupled to a second terminal of the inductive element.2. The power supply circuit of claim 1 , wherein:a drain of the second transistor is coupled to a source of the first transistor;a drain of the third transistor is coupled to a source of the second transistor; anda drain of the fourth transistor is coupled to a source of the third transistor, wherein the first, second, third, and fourth transistors comprises n-type metal-oxide-semiconductor (NMOS) transistors.3. The power supply ...

SWITCHING REGULATOR CURRENT SENSING CIRCUITS AND METHODS

In one embodiment, a switching regulator includes an inductor, a first switch, and a second switch. The first and second switches generate current in the inductor. Inductor current may flow through the second switch with both a positive and negative polarity. Voltages on terminals of the second switch may be sensed, and an offset applied to generate a level shifted signal. In one embodiment, the switching regulator is a boost switching regulator, and the offset is generated using a current source. Matched MOS transistor switches may be used to couple voltages on terminals of the second switch to amplifier inputs, and the offset is introduced across an MOS switch coupled between one amplifier input and the output. 1. A boost switching regulator circuit comprising:an inductor having a first terminal configured to receive a first voltage and a second terminal;a first switch having a first terminal coupled to the second terminal of the inductor and a second terminal coupled to a reference voltage;a second switch having a first terminal coupled to the second terminal of the inductor and a second terminal having an second voltage greater than the first voltage; anda control circuit to control the first switch and the second switch based on the second voltage and a current, the control circuit comprising a current sense circuit coupled to the first terminal of the second switch and the second terminal of the second switch,wherein a current through the second switch transitions from a positive polarity to a negative polarity over a cycle, and wherein the current sense circuit generates a level shifted signal representing the current through the second switch, and wherein a polarity of the level shifted signal is positive over the cycle of the current through the second switch.2. The circuit of wherein the level shifted signal represents the current through the second switch over approximately the entire time the second switch is closed over the cycle.3. The circuit of ...

Controller for a DC to DC converter having linear mode and switch mode capabilities

A controller for a DC to DC converter. The controller may comprise linear mode circuitry and switch mode control circuitry. The linear mode control circuitry may be capable of providing a first control signal to a controlled device of the DC to DC converter. The controlled device may operate as a variable resistor in response to the first control signal to control an output voltage of the DC to DC converter. The switch mode control circuitry may be capable of providing a second control signal to the controlled device of the DC to DC converter. The controlled device may turn ON and OFF in response to the second control signal to control the output voltage of the DC to DC converter. One of the linear mode control circuitry and the switch mode control circuitry may be enabled. The controller may also include protection circuitry.

Cleaning device sealing mechanism for vapor deposition furnace

The utility model discloses a cleaning device sealing mechanism for a vapor deposition furnace, and relates to the technical field of vapor deposition furnaces. The cleaning device sealing mechanism for the vapor deposition furnace comprises a cleaning device rod, the outer surface of the cleaning device rod is sleeved with two packing, a nitrogen protection chamber is formed between the two packing, and a cleaning brush is arranged on the portion, close to the lower portion of the packing, of the outer surface of the cleaning device rod. According to the cleaning device sealing mechanism for the vapor deposition furnace, two graphite packings are adopted for sealing, the middle position is protected by inert gas, the gas pressure of the whole sealing mechanism is larger than the pressure in the vapor deposition furnace, and a high-temperature-resistant and wear-resistant special steel wire brush is installed below the sealing mechanism, so that carbon microspheres attached to a rod can ...

Short range wireless tracking and event notification system for portable devices

A method and system for tracking a portable device. A tracking system includes a portable device, a first Radio Frequency (RF) module, and a second RF module. The first Radio Frequency (RF) module is installed in the portable device for transmitting a wireless signal. The second RF module is used for receiving the wireless signal. When a received amplitude of the wireless signal that is received by the second RF module is less than a predetermined value, the second RF module generates an alert.

Hunan lotus beverage

The Hunan lotus bverage is a nutritive, health-care one that is made up of hunan lotus' root, sesame, white sugar and water in weight ratio of 1-7:0.4-4:1-7:80-97 through such technological steps as proportioning, mixing, colloid grinding, homogenization, degassing, bottling and sterilization.

Method for preparing pearlescent pigment from ilmenite hydrochloric acid acidolysis solution by co-extraction

A preparation method of pearlescent pigment coating materials is provided. The method of the present invention lies in that titanium-iron ions in ilmenites are dissolved by using a hydrochloric acid at a certain temperature and pressure, and then ferrous chloride in the acidolysis solution is precipitated by adding hydrogen chloride gas, the remaining titanium-iron ions are separated from other colored ions by means of co-extraction using an extractant upon oxidation, and an enriched titanium oxydichloride solution and ferrous hydrous oxide are obtained by employing a fractional back extraction and enrichment method, the titanium oxydichloride solution can be used for mica-titanium based pearlescent pigment coating materials, and can also be used for preparing titanium dioxide; and the acidified ferrous hydrous oxide and the oxidized ferrous chloride can be used as iron based pearlescent pigment coating materials or used for preparing iron oxide pigments.

Spring and voussoir combination formula footboard sensation simulator

The utility model provides a spring and voussoir combination formula footboard sensation simulator, this simulator of includes cylinder body (1), piston (2), T support piece (3), footboard sensation simulation spring (4), cable wire (5), fixed pulley (7), voussoir (8), sealing member (9), piston (2) top be the wedge, mutually support with voussoir (8), form wedge slider mechanism, fixed pulley (7) are walked around in cable wire (5), and the end in T support piece (3) is connected to one end, and one end is connected on voussoir (8). Compared with the prior art, the utility model discloses can provide good brake pedal sensation, simple structure has only realized the simulation of two kinds of brake pedal sensations with one section spring, can be applied to multiple drive -by -wire braking system.

Detecting method of part surface cracks and application thereof

The invention provides a detecting method and of part surface cracks and application thereof. The method comprises: placing parts in a fluorescent liquid to make fluorescent materials permeate to the cracks of the part surfaces; then, determining whether the part surfaces have cracks or not by detecting whether the part surfaces have residual fluorescent materials or not. The defects such as the part surface cracks, poor sealing, and so on are amplified by the detection of the permeation of the fluorescentmaterials. The parts having cracks are quickly detected, and the defective parts are rejected. The detecting method is used for detecting surface cracks of glass package diodes. The detecting method can quickly identify whether the glass package diodes have surface cracks or not.

Lightweight high-reliability optical fiber assembly

The invention discloses a light-weight high-reliability optical fiber assembly which is composed of an input end, a deconcentrator, an output end and a transmission optical fiber, is used for efficiently receiving and transmitting optical signals and can be applied to occasions such as a laser radar system. The assembly has a main and standby circuit redundancy design and is high in reliability; the light-weight design principle is followed, the structure is compact, and the weight is light; through mechanical environment resistance design, the vibration resistance and the impact resistance are excellent; by adopting the radiation-proof reinforcement design, the radiation-proof capability is strong, and the long-term work of the optical fiber assembly in space environments such as satellites and the like can be ensured.

Boost converters having self-adaptive maximum duty-cycle-limit control

In one embodiment, a control circuit adjusts a duty cycle of a boost converter and comprises a duty cycle limiter generator configured to receive an input voltage provided to the boost converter and to generate a control signal to be provided to the boost converter for adjusting the duty cycle of the boost converter to control the output voltage of the booster converter in response to the input voltage. In one embodiment, the maximum duty cycle limit generator further generates the maximum duty cycle signal in response to an output voltage of the boost converter.

Analog circuit for calculating square and reciprocal of a current

An analog circuit for calculating square and reciprocal of a current is provided. It is an analog integrated circuit and can make the input and output signals become currents in the current field of the same type of analog integrated circuit. The output current can be the square or reciprocal of the input current. The square and reciprocal functions can be implemented by using three identical BJTs. Those three BJTs are independent and the bases and collectors of the BJTs are coupled to ground. Hence, the circuit can be implemented by the standard CMOS and can be applied to the other complicated system. In addition, the operational amplifier and the capacitor in the circuit are required to stabilize this circuit. This circuit has a simple structure.

Short range wireless tracking and event notification system for portable devices

A method and system for tracking a portable device. A tracking system includes a portable device, a first Radio Frequency (RF) module, and a second RF module. The first Radio Frequency (RF) module is installed in the portable device for transmitting a wireless signal. The second RF module is used for receiving the wireless signal. When a received amplitude of the wireless signal that is received by the second RF module is less than a predetermined value, the second RF module generates an alert.

低温度系数和低电源电压系数的参考电流源

In the power source, a start circuit generates a low voltage, making a constant current generation circuit operate. The start circuit includes: PMOS tube for generating image current, two NMOS tubes constituting current mirror circuit, a NMOS tube for starting a constant current generation circuit, a resistance for controlling on/off of NMOS tube. The constant current generation circuit includes: two PMOS tubes constituting current mirror circuit, capacitance for preventing parasitic oscillation in circuit, PNP bipolar transistor for generating two emitter junction voltages, and operational amplifier for carrying out differentiate magnification for voltage drop. The reference current source realizes temperature stable output current, possessing very low temperature coefficient, without need of external part an external signal, low usable area and low power consumption.

Adaptive wireless receiver

An adaptive wireless receiver and method thereof is disclosed in the present invention. The receiver includes an antenna, a bandpass filter, a front-end unit and a demodulator. Elements inside the front-end unit can be reused when the receiver operates in a zero intermediate frequency (ZIF) mode and in a low intermediate frequency (LIF) mode. The front-end unit includes a first and second down-conversion mixer, an analog filter, a first and second analog-to-digital converter (ADC), and a digital filter.

Fracturing strength test tool and method for liquid crystal rubber frame bonding

The invention relates to a fracturing strength test tool and method for liquid crystal rubber frame bonding. The fracturing strength test tool for liquid crystal rubber frame bonding comprises a clamping device, a pressing bar and a dynamometer. A liquid crystal rubber frame is fixed through the clamping device, and part of the liquid crystal rubber frame extends out of the clamping device, the pressing bar continuously presses and acts on the part, outside the clamping device, of the liquid crystal rubber frame until the liquid crystal rubber frame fractures, and the dynamometer is used for measuring pressing force of the pressing bar to achieve the aim of measuring fracturing strength after the liquid crystal rubber frame is bonded.

Pu'er tea processing method by inoculated fungi microbe

The invention provides a processing method of pu-er tea with inoculated fungi microorganism. During the first day of pu-er tea pile-fermentation, aspergillus niger red koji and penicillum sp. red koji is mixed together by the ratio of 1-2:1 and is added into the production process of pu-er tea by the weight percentage of uniform mixed red koji and basic tea of 1:125-250; during the second day of pu-er tea pile-fermentation, saccharomyces sp. is added into the production process of pu-er tea by the weight percentage of saccharomyces sp. and basic tea of 1:250-500 and then material is gathered together and covered with fermentation cloth; fermentation gathering temperature is controlled between 40 celsius degree and 65 celsius degree and gathering overturning has to be carried on apporiately to control moisture content between 14 percent and 20 percent; when tea leaves moisture content is over than 20 percent, ditch recanalization has to be carried on every day; when tea leaves moisture content ...

Pulse measuring instrument based on single chip microcomputer

The utility model discloses a pulse measuring instrument based on single chip microcomputer belongs to pulse measurement technical field. The process that all needs a pressurization and decompression is measured to prior art's pulse measurement appearance at every turn, has accuracy low grade shortcoming bulky, have discomfort, pulse measuring with the decompression process. Pulse measuring instrument based on single chip microcomputer, including can placing in the photoelectric sensor at human each position, photoelectric sensor connects a signal processor who is used for handling the low frequency?signals that photoelectric sensor gathered, and signal processor connects one and is used for carrying out the single chip circuit that calculates to the impulse level of input, and singlechip circuit connection no. 1 is used for showing sphygmous display. The utility model discloses a photoelectric sensor does not invade the organism when measuring, and can not produce the organism and harm ...

Common-mode signal filter

The invention discloses a common-mode signal filter which comprises a nonmagnetic insulating base plate, a coil laminated structure, an insulating layer and a magnetic material layer. The common-mode signal filter is characterized in that the coil laminated structure is arranged on the nonmagnetic insulating base plate, wherein the coil laminated structure comprises a first coil and a second coil, the first coil and the second coil are coupled to remove common-mode noise together, the magnetic material layer covers on the coil laminated structure through the insulating layer, the total line length L (mm) and the line width W (mm) of one of the first coil and the second coil are satisfied with a relational expression below: L/W is greater than [(14.1-fc)/6.5]2 but less than [(16.7-fc)/4.5]2, wherein fc(MHz) is a cut-off frequency of a different-mode signal.

Phenolic molding material using emulsion prepared from cashew nut oil and water as plasticizer and preparation method thereof

The invention relates to a phenolic molding material using the emulsion prepared from cashew nut oil and water as plasticizer and a preparation method thereof. The preparation method comprises the following steps: successively placing wood cellulose, phenolic resin, curing agent, curing accelerator, lubricant and pigment in a mixer to mix evenly, then adding emulsion used as plasticizer which is prepared from cashew nut oil and water to mix for 5-20min, sending the obtained mixture to a roller press to plasticate, and finally cooling and grinding to obtain the phenolic molding material. By using the emulsion as plasticizer which is prepared from cashew nut oil and water, the stability of material of the phenolic molding material is increased under the condition of injection moulding, the liquidity of material is improved, the curing rate of material in mould is not affected, and the injection performance of the phenolic molding material is effectively improved.

Insulating steel paperboard and process for producing same

The invention relates to an insulating steel paperboard and a process for producing the same. The insulating steel paperboard is produced from the main raw material of plant fiber by using various special chemical additives in the paper making technology, and the insulating steel paperboard has good insulating performance, high strength, light weight and various special and excellent mechanical functions, can resist electric arc and oil and is easy to process (punch and bend). The process for producing the insulating steel paperboard adopts the one-step forming technology, the vacuum dehydrating technology and the high-temperature hot-pressing and drying technology. Compared with the domestic process for producing the same type of product, the process for producing the insulating steel paperboard has the advantages of low production cost, less equipment investment, simple step, easy implementation and operation and low energy consumption and can realize the clean production.

Preparation method for directly synthesizing titanium dioxide from titanium-rich organic phase prepared from ilmenite

The present invention relates to a method for directly synthesizing titanium dioxide from a titanium-rich organic phase prepared from ilmenite, and more particularly to a method in which a titanium-rich acidolysis solution is obtained by an efficient ore dissolving technology, titanium ions are transferred to the organic phase by means of an effective titanium extractant to obtain a high-purity and titanium-rich organic phase, and then the titanium dioxide is directly synthesized in the organic phase. With this method, the dissolution rate of ilmenite can be effectively improved, the process flow is shortened and production costs are reduced, and titanium dioxide with high yield and high quality is obtained.

BOOST CONVERTERS HAVING SELF-ADAPTIVE MAXIMUM DUTY-CYCLE-LIMIT CONTROL

In one embodiment, a control circuit adjusts a duty cycle of a boost converter and comprises a duty cycle limiter generator configured to receive an input voltage provided to the boost converter and to generate a control signal to be provided to the boost converter for adjusting the duty cycle of the boost converter to control the output voltage of the booster converter in response to the input voltage. In one embodiment, the maximum duty cycle limit generator further generates the maximum duty cycle signal in response to an output voltage of the boost converter. 1. A control circuit for adjusting a duty cycle of a boost converter comprising:a duty cycle limiter generator configured to receive an input voltage provided to the boost converter and to generate a control signal to be provided to the boost converter for adjusting the duty cycle of the boost converter to control the output voltage of the booster converter in response to the input voltage.2. The control circuit of wherein the duty cycle limiter generator comprises:an analog-to-digital converter to generate a digitized signal in response to an input voltage of the boost converter; anda duty cycle limit generator to generate a maximum duty cycle signal to limit the duty cycle of the boost converter in response to the digitized signal generated by the analog-to-digital converter.3. The control circuit of wherein the maximum duty cycle limit generator comprises:a current starved buffer to provide a current in response to a switching signal provided to control the boost converter;a capacitor coupled between the output of the current starved buffer and ground;a reference voltage selection circuit to generate a reference voltage in response to the digitized signal; anda comparator to generate a maximum duty cycle signal in response to a voltage across the capacitor and the reference voltage.4. The control circuit of wherein the maximum duty cycle limit generator further generates the maximum duty cycle signal in ...

MULTI-MODE DC-TO-DC POWER CONVERTER

An apparatus is disclosed for implementing a multi-mode direct-current (DC)-to-DC power converter. In an example aspect, the apparatus includes a DC-to-DC power converter with a flying capacitor, an inductor, and four switches. The inductor is coupled between a second node and a battery node. A first switch is coupled between a first node and a first terminal of the flying capacitor. A second switch is coupled between the first terminal and the second node. A third switch is coupled between a second terminal of the flying capacitor and the second node. A fourth switch is coupled between the second terminal and a ground node. The DC-to-DC power converter is configured to selectively transfer power from the first node to the battery node according to a first operational mode and transfer other power from the battery node to the first node according to a second operational mode. 1. An apparatus comprising: a first node, a second node, a battery node, and a ground node;', 'a flying capacitor having a first terminal and a second terminal;', 'an inductor coupled between the second node and the battery node;', 'a first switch coupled between the first node and the first terminal of the flying capacitor;', 'a second switch coupled between the first terminal of the flying capacitor and the second node;', 'a third switch coupled between the second terminal of the flying capacitor and the second node; and', 'a fourth switch coupled between the second terminal of the flying capacitor and the ground node,, 'a direct-current (DC)-to-DC power converter comprising transfer power from the first node to the battery node according to a first operational mode; and', 'transfer other power from the battery node to the first node according to a second operational mode., 'the DC-to-DC power converter configured to selectively2. The apparatus of claim 1 , wherein the DC-to-DC power converter is configured to selectively:operate as a three-level buck converter according to the first ...

METHOD FOR PREPARING PEARLESCENT PIGMENT FROM ILMENITE HYDROCHLORIC ACID ACIDOLYSIS SOLUTION BY CO-EXTRACTION

A preparation method of pearlescent pigment coating materials is provided. The method of the present invention lies in that titanium-iron ions in ilmenites are dissolved by using a hydrochloric acid at a certain temperature and pressure, and then ferrous chloride in the acidolysis solution is precipitated by adding hydrogen chloride gas, the remaining titanium-iron ions are separated from other colored ions by means of co-extraction using an extractant upon oxidation, and an enriched titanium oxydichloride solution and ferrous hydrous oxide are obtained by employing a fractional back extraction and enrichment method, the titanium oxydichloride solution can be used for mica-titanium based pearlescent pigment coating materials, and can also be used for preparing titanium dioxide; and the acidified ferrous hydrous oxide and the oxidized ferrous chloride can be used as iron based pearlescent pigment coating materials or used for preparing iron oxide pigments. 1. A method for preparing pearlescent pigments comprising a ferric oxide (FeO) coating layer or a titanium dioxide (TiO) coating layer or a FeO/TiOcoating layer from ilmenites by using co-extraction , the method comprises the following steps:(1) adding hydrochloric acid and ilmenite into a reaction kettle according to a hydrochloric acid/ilmenite mass ratio of 0.5-15:1, raising the temperature to an elevated temperature T1 within a range of 30-95° C. under stirring, and then reacting at the reaction temperature T1, wherein hydrogen chloride gas is introduced in the reaction process, and the system is kept at the pressure P higher than the atmospheric pressure; directly filtering the reaction mixture after completion of the reaction to obtain a filtrate, cooling the filtrate, and carrying out solid-liquid separation to obtain a hydrochloric acid solution A0 containing titanium-iron ions and a ferrous chloride precipitate C0, and then, optionally, directly calcining the clean ferrous chloride precipitate C0 obtained ...

Method of improving retention and drainage in a papermaking process using a diallyl -n, n-disubstituted ammonium halide/acrylamide copolymer and a structurally modified cationic polymer

A method of increasing retention and drainage in a papermaking furnish comprising adding to the furnish an effective amount of a diallyl-N,N-disubstituted ammonium halide/acrylamide copolymer and an effective amount of a cationic structurally-modified water soluble polymer, wherein the cationic structurally-modified water-soluble polymer prepared by initiating polymerization of an aqueous solution of from about 95 to about 5 mole percent of an acrylamide monomer, and from about 5 to about 95 mole percent of a cationic monomer, and adding at least one structural modifier to the polymer solution after at least 30 % polymerization of the monomers has occurred.

Boost regulator having adaptive dead time

A boost regulator that selectively operates in an asynchronous mode, a synchronous mode, or an adaptive mode. In the adaptive mode, the boost mode regulator controls a high side switch according to an adaptive dead time. Adaptive mode allows the boost regulator to operate more efficiently than in asynchronous mode.

Method of improving retention and drainage in a papermaking process using a diallyl -n, n-disubstituted ammonium halide/acrylamide copolymer and a structurally modified cationic polymer

A method of increasing retention and drainage in a papermaking furnish comprising adding to the furnish an effective amount of a diallyl-N,N-disubstituted ammonium halide/acrylamide copolymer and an effective amount of a cationic structurally-modified water soluble polymer, wherein the cationic structurally-modified water-soluble polymer prepared by initiating polymerization of an aqueous solution of from about 95 to about 5 mole percent of an acrylamide monomer, and from about 5 to about 95 mole percent of a cationic monomer, and adding at least one structural modifier to the polymer solution after at least 30 % polymerization of the monomers has occurred.

Method of improving retention and drainage in a papermaking process using a diallyl -n, n-disubstituted ammonium halide/acrylamide copolymer and a structurally modified cationic polymer

A method of increasing retention and drainage in a papermaking furnish comprising adding to the furnish an effective amount of a diallyl-N,N-disubstituted ammonium halide/acrylamide copolymer and an effective amount of a cationic structurally-modified water soluble polymer, wherein the cationic structurally-modified water-soluble polymer prepared by initiating polymerization of an aqueous solution of from about 95 to about 5 mole percent of an acrylamide monomer, and from about 5 to about 95 mole percent of a cationic monomer, and adding at least one structural modifier to the polymer solution after at least 30 % polymerization of the monomers has occurred.

Method of improving retention and drainage in a papermaking process using diallyl-N, N-disubstituted ammonium halide/acrylamide copolymer and a structurally modified cationic polymer

Analog circuit for calculating square and reciprocal of a current

An analog circuit for calculating square and reciprocal of a current is provided. It is an analog integrated circuit and can make the input and output signals become currents in the current field of the same type of analog integrated circuit. The output current can be the square or reciprocal of the input current. The square and reciprocal functions can be implemented by using three identical BJTs. Those three BJTs are independent and the bases and collectors of the BJTs are coupled to ground. Hence, the circuit can be implemented by the standard CMOS and can be applied to the other complicated system. In addition, the operational amplifier and the capacitor in the circuit are required to stabilize this circuit. This circuit has a simple structure.

Deviation detection method and deviation detection device

Method and apparatus for spot-checking visual inspection system

A spot-checking method for a visual inspection system includes obtaining a plurality of to-be-inspected images, inspecting the plurality of to-be-inspected images to obtain defect types and/or parameters of a target object in the plurality of to-be-inspected images, and confirming availability of the visual inspection system based on the defect types and/or the parameters.

Deviation detection method and deviation detection device

A deviation detection method includes obtaining first and second images of first and second electrode sheets, respectively, of an electrode assembly during winding using first and second cameras. The method further includes determining whether the first and/or second camera is deviated according to a distance from a reference point in the first and/or second image to a specific position, which is a position of a same object appearing in the first image and the second image. The method also includes determining whether the electrode assembly is deviated according to a vertical distance from the reference point in the first image to a boundary of the first electrode sheet and a vertical distance from the reference point in the second image to a boundary of the second electrode sheet if the first camera and the second camera are not deviated.

Debugging method and apparatus for production line devices, and production line system

Embodiments of this application provide a debugging method and apparatus for production line devices and a production line system, able to improve performance of production lines. The debugging method for production line devices includes: receiving control commands for a plurality of first devices in a production line, where respective control programs are configured for the plurality of first devices; and calling the control programs for the plurality of first devices according to the control commands for the plurality of first devices respectively so as to debug the plurality of first devices. In this technical solution, an execution subject of the debugging method can receive control commands for a plurality of first devices from an upper layer (for example, user), and call, according to the control commands, control programs corresponding to the plurality of first devices to control the plurality of first devices so as to debug the plurality of first devices. This debugging solution enables the plurality of first devices to meet requirements of different environments and can locate possible problems of the plurality of first devices, thereby improving the performance of the production line to which the plurality of first devices belong.

Adaptive combination power supply circuit and charging architecture

An adaptive combination power supply circuit may be capable of switching between performing as a three-level buck converter and as a divide-by-two charge pump. One example power supply circuit generally includes a first transistor (Ql); a second transistor (Q2) coupled to the first transistor via a first node (202); a third transistor (Q3) coupled to the second transistor via a second node (204); a fourth transistor (Q4) coupled to the third transistor via a third node (206); a capacitive element (Cfly) having a first terminal coupled to the first node and a second terminal coupled to the third node; an inductive element (LI) having a first terminal coupled to the second node; and a switch (Q6) having a first terminal coupled to the first terminal of the inductive element, the switch having a second terminal coupled to a second terminal of the inductive element.

Connection terminal pattern and layout for three-level buck regulator

The application generally relates to a connection terminal pattern and layout for a three-level buck regulator. One example electronic module generally includes a substrate, an integrated circuit (IC) package (502) disposed on the substrate and comprising transistors of the three-level buck regulator, a capacitive element (202) of the three-level buck regulator disposed on the substrate, and an inductive element (204) of the three-level buck regulator disposed on the substrate. The capacitive element and the inductive element are disposed adjacent to different sides (530, 532) of the IC package.

Deviation detection method and deviation detection device

A deviation detection method includes obtaining first and second images of first and second electrode sheets, respectively, of an electrode assembly during winding using first and second cameras. The method further includes determining whether the first and/or second camera is deviated according to a distance from a reference point in the first and/or second image to a specific position, which is a position of a same object appearing in the first image and the second image. The method also includes determining whether the electrode assembly is deviated according to a vertical distance from the reference point in the first image to a boundary of the first electrode sheet and a vertical distance from the reference point in the second image to a boundary of the second electrode sheet if the first camera and the second camera are not deviated.

Deviation detection method and deviation detection device

A deviation detection method and a deviation detection device for detecting positional deviation of an electrode assembly during winding are provided. The method comprises: obtaining a plurality of first images and a plurality of second images by using a photographing unit during the winding process of the electrode assembly, where the first image includes a first electrode sheet, and the second image includes a second electrode sheet; matching a first image with a second image, where the first image and the second image contain the same or corresponding identification objects, and the identification objects are portions periodically formed on each winding layer of the electrode assembly; and determining whether the electrode assembly is deviated according to the boundary of the first electrode sheet in the first image and/or the boundary of the second electrode sheet in the second image in a group of matching first and second images.

Multi-mode DC-to-DC power converter

An apparatus is disclosed for implementing a multi-mode direct-current (DC)-to-DC power converter. In an example aspect, the apparatus includes a DC-to-DC power converter with a flying capacitor, an inductor, and four switches. The inductor is coupled between a second node and a battery node. A first switch is coupled between a first node and a first terminal of the flying capacitor. A second switch is coupled between the first terminal and the second node. A third switch is coupled between a second terminal of the flying capacitor and the second node. A fourth switch is coupled between the second terminal and a ground node. The DC-to-DC power converter is configured to selectively transfer power from the first node to the battery node according to a first operational mode and transfer other power from the battery node to the first node according to a second operational mode.

Point inspection method and device for visual inspection system

A method and apparatus for spot-checking a visual inspection system are disclosed. The method includes: (210) obtaining a plurality of to-be-inspected images; (220) inspecting the plurality of to-be-inspected images to obtain defect types and/or parameters of a target object in the plurality of to-be-inspected images; and (230) confirming availability of the visual inspection system based on the defect types and/or parameters.

Adaptive wireless receiver, apparatus and method thereof

Method and apparatus for debugging image detection algorithm, device, medium, and program product

A method and an apparatus for debugging an image detection algorithm, a device, a medium, and a program product are provided. The method includes: obtaining a debug file that includes image indication information of a plurality of images and algorithm indication information of the images; further, obtaining the images based on the image indication information of the images, and determining image detection algorithms corresponding to the images based on the algorithm indication information of the images; and further, separately executing the corresponding image detection algorithms for the images to obtain detection result information corresponding to the images. In embodiments of the present application, the images and the image detection algorithms corresponding to the images are obtained based on the debug file, and then the corresponding image detection algorithms are separately executed for the images to obtain the detection result information of the images.

Image detection algorithm debugging method and apparatus, and device, medium and program product

The present application relates to a method and an apparatus for debugging an image detection algorithm, a device, a medium, and a program product. The method includes: obtaining a debug file that includes image indication information of a plurality of images and algorithm indication information of the images; further, obtaining the images based on the image indication information of the images, and determining image detection algorithms corresponding to the images based on the algorithm indication information of the images; and further, separately executing the corresponding image detection algorithms for the images to obtain detection result information corresponding to the images. It can be learned that, compared with the conventional technology, in embodiments of the present application, the images and the image detection algorithms corresponding to the images are obtained based on the debug file, and then the corresponding image detection algorithms are separately executed for the images to obtain the detection result information of the images, thereby simplifying a debug process and helping improve debug efficiency.

Offset detection method and offset detection device

The present application provides a deviation detection method and a deviation detection device for detecting positional deviation of an electrode assembly during winding. The method comprises: an image obtaining step of obtaining a plurality of first images and a plurality of second images by using a photographing unit during the winding process of the electrode assembly, where the first image includes a first electrode sheet, and the second image includes a second electrode sheet; an image matching step of matching a first image with a second image, where the first image and the second image contain the same or corresponding identification objects, and the identification objects are portions periodically formed on each winding layer of the electrode assembly; and a deviation determining step of determining whether the electrode assembly is deviated according to the boundary of the first electrode sheet in the first image and/or the boundary of the second electrode sheet in the second image in a group of matching first and second images. Thus, it is possible to determine positional deviation of the first and second electrode sheets at the same position on the same winding layer, so as to determine the positional deviation more accurately.

Offset detection method and offset detection device

Debugging method and apparatus for production line devices and production line system

A debugging method for production line devices may include: receiving control commands for a plurality of first devices in a production line, where respective control programs may be configured for the plurality of first devices; and calling the control programs for the plurality of first devices according to the control commands for the plurality of first devices respectively so as to debug the plurality of first devices.

Debugging method and apparatus for production line devices, and production line system

Adaptive combination power supply circuit and charging architecture

An adaptive combination power supply circuit may be capable of switching between performing as a three-level buck converter and as a divide-by-two charge pump. One example power supply circuit generally includes a first transistor (Ql); a second transistor (Q2) coupled to the first transistor via a first node (202); a third transistor (Q3) coupled to the second transistor via a second node (204); a fourth transistor (Q4) coupled to the third transistor via a third node (206); a capacitive element (Cfly) having a first terminal coupled to the first node and a second terminal coupled to the third node; an inductive element (LI) having a first terminal coupled to the second node; and a switch (Q6) having a first terminal coupled to the first terminal of the inductive element, the switch having a second terminal coupled to a second terminal of the inductive element.

Camera calibration method and apparatus, computer device, storage medium, and program product

The present application relates to a camera calibration method and apparatus, a computer device, a storage medium, and a program product. The method includes: obtaining a first operation instruction based on a camera calibration interface; determining, from configuration information, target configuration information matching the first operation instruction and set based on the camera calibration interface; and then executing a corresponding operation in a camera calibration process based on the first operation instruction and the target configuration information. However, the camera calibration process provided by embodiments of the present application is implemented based on the camera calibration interface, without switching back and forth between a plurality of tools, thereby making the camera calibration process less cumbersome.

Conversor de energia cc-em-cc de multimodo

CONVERSOR DE ENERGIA CC-EM-CC DE MULTIMODO. É revelado um aparelho para implementar um conversor de energia de corrente contínua (CC) em CC de multimodo. Em um aspecto de exemplo, o aparelho inclui um conversor de energia de CC em CC com um capacitor flutuante, um indutor e quatro comutadores. O indutor é acoplado entre um segundo nó e um nó de bateria. Um primeiro comutador é acoplado entre um primeiro nó e um primeiro terminal do capacitor flutuante. Um segundo comutador é acoplado entre o primeiro terminal e o segundo nó. Um terceiro comutador é acoplado entre um segundo terminal do capacitor flutuante e o segundo nó. Um quarto comutador é acoplado entre o segundo terminal e um nó terra. O conversor de energia de CC em CC é configurado para seletivamente transferir energia a partir do primeiro nó para o nó de bateria de acordo com um primeiro modo operacional e transferir outra energia a partir do nó de bateria para o primeiro nó de acordo com um segundo modo operacional.

一种智能门锁

本申请中所述的一种智能门锁，包括用于智能门锁中进行锁整体旋转开合的锁芯(5)以及与锁芯(5)配合用于安装其进行开合的锁体(6)，其中，还包括：旋转套(3)，其固定套接于锁芯(5)上或固定套接于扭动锁芯的钥匙(9)上；旋转套(3)的外侧抵触有驱动其进行旋转的驱动件(1)；旋转套(3)的底部设有用于支撑其进行旋转的定位件(11)；所述驱动件(1)上还设有用于感应外部智能设备指令进而实现驱动件(1)驱动的驱动器(7)；具有该智能锁的整体结构简单，内部连接紧密设计合理，形成的完整系统稳定性高；便于生产制造与普及的效果。

Camera calibration method and apparatus, computer device, storage medium, and program product

The present application relates to a camera calibration method and apparatus, a computer device, a storage medium, and a program product. The method includes: obtaining a first operation instruction based on a camera calibration interface; determining, from configuration information, target configuration information matching the first operation instruction and set based on the camera calibration interface; and then executing a corresponding operation in a camera calibration process based on the first operation instruction and the target configuration information. However, the camera calibration process provided by embodiments of the present application is implemented based on the camera calibration interface, without switching back and forth between a plurality of tools, thereby making the camera calibration process less cumbersome.

一种实验型茶叶螺旋萃取设备

本实用新型涉及一种实验型茶叶螺旋萃取设备，包括外壳体，外壳体底部设置有支腿和排液口，外壳体内设置有内壳体，内壳体上均匀设置有若干过滤孔，外壳体一端上部设置有加热斗，加热斗连接有蒸汽发生装置，加热斗下端通过下料口与内壳体内连通，下料口内设置有抽拉阀门，内壳体内设置有与其同轴的转轴，转轴上设置有螺旋叶，转轴一端伸出外壳体外连接有电机，内壳体上远离加热斗的一端连接有伸出外壳体外的排渣口；本实用新型的实验型茶叶螺旋萃取设备结构简单，体积小，制作成本低，操作方便。

Power supply circuit for independent control and monitoring of multi-battery charging

Certain aspects of the present disclosure provide techniques and apparatus for supplying power, including battery charging. One example power supply circuit generally includes a switching regulator including an output node; a first battery node for coupling to a first battery; a second battery node for coupling to a second battery; a first switch coupled between the output node of the switching regulator and the first battery node; and a second switch coupled between the output node of the switching regulator and the second battery node. Such a power supply circuit may independently control and monitor the charging of multiple independent batteries without using multiple chargers, may balance the batteries during discharging, and may operate without a current limit switch.

Method and apparatus for spot-checking visual inspection system

A spot-checking method for a visual inspection system includes obtaining a plurality of to-be-inspected images, inspecting the plurality of to-be-inspected images to obtain defect types and/or parameters of a target object in the plurality of to-be-inspected images, and confirming availability of the visual inspection system based on the defect types and/or the parameters.

Boost converters having self-adaptive maximum duty-cycle-limit control

In one embodiment, a control circuit adjusts a duty cycle of a boost converter and comprises a duty cycle limiter generator configured to receive an input voltage provided to the boost converter and to generate a control signal to be provided to the boost converter for adjusting the duty cycle of the boost converter to control the output voltage of the booster converter in response to the input voltage. In one embodiment, the maximum duty cycle limit generator further generates the maximum duty cycle signal in response to an output voltage of the boost converter.

Circuits and methods for controlling a boost switching regulator based on inductor current

The present disclosure pertains to circuits and methods for controlling a boost switching regulator based on inductor current. An input voltage is coupled to a first terminal of an inductor and the second terminal of the inductor is alternately coupled between a reference voltage and a boosted output voltage. The input voltage is further coupled to a first terminal of an integrator circuit, and a second terminal of the integrator circuit may be alternately coupled between the reference voltage and the boosted output voltage, for example, to produce a voltage corresponding to a current in the inductor. The present circuit may be used for voltage control or current control modes, or both, in a boost switching regulator.

Power supply circuit for independent control and monitoring of multi-battery-charging

Certain aspects of the present disclosure provide techniques and apparatus for supplying power, including battery charging. One example power supply circuit generally includes a switching regulator including an output node; a first battery node for coupling to a first battery; a second battery node for coupling to a second battery; a first switch coupled between the output node of the switching regulator and the first battery node; and a second switch coupled between the output node of the switching regulator and the second battery node. Such a power supply circuit may independently control and monitor the charging of multiple independent batteries without using multiple chargers, may balance the batteries during discharging, and may operate without a current limit switch.

Boost converters having self-adaptive maximum duty-cycle-limit control

In one embodiment, a control circuit adjusts a duty cycle of a boost converter and comprises a duty cycle limiter generator configured to receive an input voltage provided to the boost converter and to generate a control signal to be provided to the boost converter for adjusting the duty cycle of the boost converter to control the output voltage of the booster converter in response to the input voltage. In one embodiment, the maximum duty cycle limit generator further generates the maximum duty cycle signal in response to an output voltage of the boost converter.

Camera calibration method and apparatus, computer device, storage medium, and program product

Image detection algorithm debugging method and apparatus, and device, medium and program product

Display screen and terminal

Acid-catalyzed photocatalyzed oxidation reaction of benzylic C—H bonds of aromatic compound

Provided is a photo-oxidation reaction of benzylic C—H bonds of an aromatic compound under the catalysis of an acid catalyst. The method aims to synthesize aromatic acids and acetophenones. The acid catalyst is one of Bronsted acids, including one or a mixture of two or more selected from the group consisting of hydrochloric acid, phosphoric acid, sulfuric acid, p-toluenesulfonic acid, methanesulfonic acid, trifluoromethanesulfonic acid, trifluoroacetic acid, and potassium hydrogen sulfate, as well as N-propylsulfonate pyridinium hydrogensulfate, N-butylsulfonate pyridinium hydrogensulfate, N-propylsulfonate pyridinium trifluoromethanesulfonate, N-butylsulfonate pyridinium trifluoromethanesulfonate, N-propylsulfonate pyridinium tetrafluoroborate, and N-butylsulfonate pyridinium tetrafluoroborate. The oxidation reaction is conducted under mild conditions (normal temperature and pressure) using air or oxygen as the oxidant in the presence of recyclable catalyst and solvent.