Magnesiumalkoxid-Katalysatorträger und Verfahren zu dessen Herstellung sowie dessen Verwendung

Ein Magnesiumalkoxid-Katalysatorträger und ein Verfahren zu dessen Herstellung werden bereitgestellt sowie dessen Verwendung angegeben. Das Verfahren zur Herstellung des Magnesiumalkoxid-Katalysatorträgers umfasst die folgenden Schritte: Mischen eines metallischen Magnesiums, eines einwertigen Alkohols, eines Halogenierungsmittels und eines Tensids bei 0ºC bis 90ºC unter einer Inertgasatmosphäre und anschließend Waschen des erhaltenen Produktes mit einem inerten Lösungsmittel, um den Magnesiumalkoxid-Katalysatorträger zu erhalten. Ein Magnesiumalkoxid-Katalysatorträger, der nach dem obigen Verfahren erhalten wird, wird ebenfalls bereitgestellt, welcher zum Katalysieren der Olefinpolymerisation verwendet werden kann. Der nach dem obigen erfindungsgemäßen Verfahren erhaltene Magnesiumalkoxid-Katalysatorträger hat eine ausgezeichnete Teilchenmorphologie und kontrollierbare Größe und ist zur Herstellung eines Katalysators für die Olefinpolymerisation geeignet.

Steel pipe inner hole grinding and derusting device

The utility model discloses a grinding and derusting device for an inner hole of a steel pipe. The utility model relates to the technical field of steel pipe machining equipment. The technical problemthat no corresponding equipment for rust removal exists for rust removal of an inner hole of an existing accurate grinding steel pipe is solved. The device comprises a base, two stand columns are vertically arranged on the base. A lifting arm is arranged on the stand column; the two ends of the lifting arm are arranged on the two stand columns in a sleeving mode correspondingly. Two screw rod lifting mechanisms and a servo motor for driving screw rods of the screw rod lifting mechanisms to rotate are arranged on the lifting arm; an upper tip rotationally connected with the lifting arm is arranged on the lifting arm, a lower tip, a grinding rod and a motor for driving the grinding rod to rotate are fixedly arranged on the base, one end of the grinding rod penetrates through the lower tip and ...

PORTABLE DETECTOR AND DETECTION METHOD FOR POC AND DOC CONTENTS IN WATER

The present invention discloses a portable detector for POC and DOC contents in water, which includes a drying and weighing unit, and a filter unit, an inorganic carbon removal unit, an oxidation unit, a condensation dehydration unit, a measurement unit and a data processing unit which are connected in sequence. The whole device is simple in structure and convenient to use, and can perform the laboratory measurement and field in-situ measurement. A disclosed method utilizes an ultraviolet-wet oxidation and conductivity method to measure particulate organic carbon and dissolved organic carbon, so that the particulate organic carbon and dissolved organic carbon in surface water, domestic sewage and production waste water can be measured, and the measurement range is wide. Drawings of Description 21 3 7 56 Fig. 1 Fig.2 1

Take heat conduction oil column pouring machine hot melt cauldron

The utility model provides a take heat conduction oil column pouring machine hot melt cauldron, installs the heater on heater fixing base (10), and from heat conduction oil tank (13) oil filler hole interpolation conduction oil, the conduction oil is full of promptly and is overlapping the conduction oil volume chamber that (9) inside oil pipe formed by extra heavy pipe (16) and oil reservoir (23) and rotation. Rotate hydraulic motor (3), drives little sprocket (7) and rotate, and then drive big sprocket (8) rotation, and the stirring starts, and stirring leaf (12) stirs the action on agitator disk (11), and slide and supporting role are played in agitator disk (11).

System and method to secure boot both UEFI and legacy option ROM's with common policy engine

In some embodiments, the invention involves using a policy engine during boot, in the driver execution environment (DXE) phases to authenticate that drivers and executable images to be loaded are authenticated. Images to be authenticated include the operating system (OS) loader. The policy engine utilizes a certificate database to hold valid certificates for third party images, according to platform policy. Images that are not authenticated are not loaded at boot time. Other embodiments are described and claimed.

Magnesium alkoxide catalyst support and the preparation method and use thereof

A magnesium alkoxide catalyst support and the preparation method and use thereof are provided. The method for preparing the magnesium alkoxide catalyst support comprises the following steps: mixing a metallic magnesium, a monohydric alcohol, a halogenating agent and a surfactant at 0° C. to 90° C. under an inert gas atmosphere, and then washing the resultant with an inert solvent to obtain the magnesium alkoxide catalyst support. A magnesium alkoxide catalyst support obtained by the above method is also provided, which can be used to catalyze olefin polymerization. The magnesium alkoxide catalyst support obtained by the above method according to the invention has excellent particle morphology and controllable size, and is suitable for preparing a catalyst for olefin polymerization.

Method for preparing beta-crystal form polypropylene resin by in-situ polymerization

The invention relates to a method for preparing a beta-crystal form polypropylene resin by in-situ polymerization. The method comprises the following steps: adding a Ziegler-Natta catalyst, a cocatalyst alkyl aluminum compound and an external electronic donor compound to a bulk polymerization reactor or a slurry polymerization reactor containing propylene to catalyze propylene for bulk polymerization or slurry polymerization so as to obtain polypropylene powder or spherical granules; and directly heating and melting the obtained powder or spherical granules or extruding through an extruder. The invention adopts one-step polymerization to obtain the polypropylene resin of which the beta-crystal content is 5%-40% and abandons the complicated post-processing and the step of adding beta-form nucleating agent additionally, thereby facilitating the operation. Besides, the polypropylene resin has superior impact resistance and wide application and can be used in the fields such as special resin ...

MACHINE LEARNING PREDICTION OF VIRTUAL COMPUTING INSTANCE TRANSFER PERFORMANCE

The disclosure provides an approach for preventing the failure of virtual computing instance transfers across data centers. In one embodiment, a flow control module collects performance information primarily from components in a local site, as opposed to components in a remote site, during the transfer of a virtual machine (VM) from the local site to the remote site. The performance information that is collected may include various performance metrics, each of which is considered a feature. The flow control module performs feature preparation by normalizing feature data and imputing missing feature data, if any. The flow control module then inputs the prepared feature data into machine learning model(s) which have been trained to predict whether a VM transfer will succeed or fail, given the input feature data. If the prediction is that the VM transfer will fail, then remediation actions may be taken, such as slowing down the VM transfer. 1. A computer-implemented method , comprising:receiving performance information associated with a transfer of a virtual computing instance from a first data center to a second data center over a first data transfer path;predicting, using at least a first machine learning model and the received performance information, whether the transfer of the virtual computing instance will succeed; andresponsive to predicting that the transfer of the virtual computing instance will not succeed, reducing a rate at which the virtual computing instance is transferred.2. The computer-implemented method of claim 1 , further comprising claim 1 , selecting the first machine learning model from a plurality of trained machine learning models based claim 1 , at least in part claim 1 , on the received performance information.3. The computer-implemented method of claim 1 , wherein the first machine learning model is trained using training data that includes performance information and success information associated with at least one of a high throughput ...

Soluble test jig of epoxy molding plastic

The utility model relates to a soluble test jig of epoxy molding plastic, place the car including solvent bucket rack, standard screen rack and waste liquid collecting vessel, the standard screen rack is a cuboid structure, solvent bucket rack is connected in standard screen rack top, the upper surface of standard screen rack is opened has the standard screen to place the hole, the waste liquid collecting vessel is placed the car and is placed in the interior bottom of standard screen rack, with a lateral wall fixed connection of above -mentioned standard screen rack. The utility model discloses can reduce and fall subaerial waste liquid solvent, protection test regional environment reduces waste liquid volatile solvents and test controlet's health contact, and the protection test controlet's is healthy.

Detection circuit, driving method thereof and ultrasonic detection array panel

The invention provides a detection circuit, a driving method thereof and an ultrasonic detection array panel, and belongs to the technical field of ultrasonic detection. The detection circuit comprises a voltage sensing module, a current conversion module and an energy storage capacitor, the voltage sensing module is configured to write sensing voltage generated by the transduction element in response to an ultrasonic echo signal into the first end of the energy storage capacitor; the current conversion module is provided with a driving transistor and can write the threshold voltage of the driving transistor into the second end of the energy storage capacitor; the driving transistor is configured to be capable of outputting sensing current according to the voltage of the second end of the energy storage capacitor. The detection circuit can improve the test precision and the image quality.

DEVICE FOR EVALUATING TOXIC EFFECTS OF POLLUTANTS ON SOIL ORGANISMS

Abstract The present invention discloses a device for evaluating toxic effects of pollutants on soil organisms. A reagent adding system, a sprinkler system, a light control system, an ultraviolet sterilization system, a cultivation system, a CO 2 regulation system, a temperature control system and a central control system are arranged on a box body of the device. The device can automatically regulate the temperature, CO 2 concentration and illumination and simulate the natural environment, can periodically add moisture for soil to ensure soil moisture content and simulate the soil in the nature, and can also quantitatively add pollutant reagents periodically to ensure a concentration of pollutants in a soil environment in which soil organisms are located in a test. The device is convenient to use and simple in operation, can be configured by scientific researchers according to own needs, decreases pollution of the pollutants, and has high scientific research and practical values. Drawings ...

Identification method of fistulobalanus albicostatus and amphibalanus amphitrite as well as primer

The invention relates to the identification of barnacles, in particular to an identification method of fistulobalanus albicostatus and amphibalanus amphitrite as well as a primer. The primer is a mixture primer of 18SCOM, 18SB1and 18SW1. The identification method comprises the following steps: extracting the DNA of the fistulobalanus albicostatus and the amphibalanus amphitrite; carrying out a PCRamplified reaction; making an electrophoretogram; and judging a result. The mixture primer of 18SCOM, 18SB1and 18SW1 is utilized for the PCR amplification of the DNA of the fistulobalanus albicostatus and the amphibalanus amphitrite which are identified by the electrophoretogram and can be effectively distinguished according to the lengths and the number of target fragments of an electrophoresisresult, and accordingly, the accuracy and the efficiency of the identification are improved.

Main transformer overload intertripping method and system based on power grid power flow, and electronic equipment

The invention relates to the technical field of power grid overload protection, in particular to a main transformer overload intertripping method and system based on power grid power flow and electronic equipment, and the main transformer overload intertripping method based on the power grid power flow comprises the steps: obtaining the current main transformer transmission power and power flow direction; obtaining a cutting priority sequence of the power grid branches; and if the transmission power of the main transformer meets the cut-off condition, cutting off one or more power grid branches according to the tidal current direction and the cut-off priority sequence until the transmission power of the main transformer does not meet the cut-off condition any more. During use, whether the main transformer transmission line of the current power grid is overloaded or not can be judged according to the current main transformer transmission power of the power grid, and if yes, one or more power ...

Virtual network flow monitoring

Embodiments perform end-to-end virtual network flow monitoring in a virtual datacenter and provide differentiated views to users based on user role. A target flow pattern describing data packets of interest is distributed to a plurality of applications managing VMs in the virtual datacenter, such as hosts, virtual gateways, and other virtual network applications. Each of the applications monitors data packets routed by the application by comparing the data packets to the flow pattern and selectively collecting context data describing the data packets. The context data collected by the applications is aggregated at a remote server for analysis and reporting.

MICROCOSMIC EXPERIMENTAL DEVICE FOR SIMULATING POND ECOSYSTEM

The present invention relates to a microcosmic experimental device for simulating a pond ecosystem. The microcosmic experimental device is provided with a weather simulation system, a periodic monitoring system, a reagent storage and transmission system, a control system, a temperature control system and a sewage treatment tank, can relatively truly simulate and restore the weather of ponds in the natural environment by simulating the weather such as wind, rain, thunder and lightning in the natural environment, can achieve real-time monitoring, and enables experimental experts to choose different types and contents of chemicals according to the own experimental subjects to carry out comprehensive research on the influences of chemical substances on a simulated water ecological environment from multiple angles. The control system enables the experimental experts to better explore the influences of the chemical substances on the ecological environment of waters by controlling reagent variables, so that the control is more apparent. The temperature control system can be adopted to control the temperature of each small simulated pond ecosystem, so that the microcosmic environment is easier to be controlled. The sewage treatment tank can be adopted to reduce the influences of experiments on the environment and achieve environmental protection and no pollution. Drawings of Description 311 23 23i 2 3232 233 1 3 4 311 312 31 Fig. 1 1

Rubber shock absorber spare defect detecting device

The utility model relates to a rubber shock absorber spare defect detecting device, it includes that visual detection mechanism, drive mechanism, automatic sorting machine construct and the terminal PC, drive mechanism by the gear frame, fix the work pallet that can follow the driven conveyer belt of gear frame circulation on the gear frame, fix end of tray seat on the conveyer belt, be connected with the end of tray seat, visual detection mechanism comprises a detection device and the 2nd detection device, and the 2nd detection device and a detection device are opposite direction on coplanar coparallel ground and arrange, automatic sorting machine constructs and to collect basket, unqualified by first cylinder, second cylinder, qualified and collect basket, the 3rd photoelectric switch group and fourth photoelectric switch and form, be fixed with first cylinder and second cylinder at the conveyer belt with one side on the gear frame, the utility model discloses carry out the leakage prevention ...

Dihydric alcohol sulphonate compound, and preparation method and application thereof

The invention provides a dihydric alcohol sulphonate compound, and a preparation method and application thereof. The dihydric alcohol sulphonate compound has the following general formula I, wherein N is greater than or equal to 3; R1 and R2 are selected from linear chains and branched chains C1 to C20 alkyl groups, C3 to C20 naphthenic bases, C6 to C20 aromatic groups, C7 to C20 aralkyl groups and alkaryl, C2 to C20 alkylene, and C6 to C20 polycyclic aryl groups; R3 to R8 are selected from hydrogen and halogen atoms, linear chains and branched chains C1 to C20 alkyl groups, C3 to C20 naphthenic bases, C6 to C20 aromatic groups, C7 to C20 aralkyl groups and alkaryl, C2 to C20 alkylene, and C6 to C20 polycyclic aryl groups; R3 to R8 are not complete hydrogen and/or halogen atoms. The preparation of the dihydric alcohol sulphonate is to perform esterification on dihydric alcohol. The invention further provides application of the dihydric alcohol sulphonate to the preparation of an alkene ...

Ceramimetallurgical titanium powder composition

The invention relates to a ceramimetallurgical titanium powder composition, which consists of 99.4 to 99.7 weight percent of hydrogenated and dehydrogenated titanium powder and 0.3 to 0.6 weight percent of zinc stearate. The invention adds the zinc stearate into the titanium powder, thereby obtaining green compacts with larger volume and improving the density of the green compacts. The titanium powder composition is suitable for ceramimetallurgical products.

Catalyst for homopolymerizing and copolymerizing propylene and its preparation and use

A catalyst for homopolymerizing and copolymerizing propylene and its preparation and use. The catalyst component includes titanium compound containing at least one Ti-halogen bond and at least two kinds of electron donor compounds A and B supported on MgCl 2 .nROH adduct, wherein the electron donor compound A is a compound of formula (I), the electron donor compound B is ester or ether compound; the molar ratio between compound A and compound B is 0.1-5; the molar ratio between the total amounts of the two kinds of electron donors and MgCl 2 .nROH is 0.01-1, based on the amount of MgCl 2 .nROH; and the molar ration between the titanium compound containing Ti-halogen bond and MgCl 2 .nROH is 1-200. The catalyst has high activity, high stereospecificity and good copolymerization performance. In addition, the morphology of the polymer obtained therefrom is good.

Flower cheese healthcare biscuits and making method thereof

The invention relates to flower cheese healthcare biscuits and a making method thereof. The flower cheese healthcare biscuits comprise, by weight, 60-70 parts of low-gluten flour, 30-40 parts of buckwheat powder, 10-20 parts of mango, 10-20 parts of fresh niblet, 10-12 parts of sweet-scented osmanthus, 6-8 parts of roses, 10-12 parts of peach blossoms, 10-20 parts of cheese, 10-20 parts of white granulated sugar, 10-20 parts of fresh eggs, 5-7 parts of yeast powder, and 100-100 parts of water. The making method includes mixing, stirring, forming, baking and the like. The flower cheese healthcare biscuits have the advantages that the biscuits combine the tastes of the cheese and the biscuits, the biscuits are allowed to be crispy and tasty, the biscuits are more delicious in taste by the added flowers, and the biscuits are rich in nutrition and have an effect of maintaining beauty and young looks.

DISTRIBUTED GLOBAL LOAD-BALANCING SYSTEM FOR SOFTWARE-DEFINED DATA CENTERS

The disclosure herein describes a system for providing distributed global server load balancing (GSLB) over resources across multiple data centers. The system includes a directory group comprising one or more directory nodes and a plurality of GSLB nodes registered to the directory group. A respective GSLB node is configured to provide GSLB services over a respective portion of the resources. A directory node includes a domain name system (DNS) query-receiving module configured to receive a DNS query from a client, a node-selecting module configured to select from the plurality of GSLB nodes a first GSLB node based at least on the DNS query, and a DNS query-responding module configured to respond to the DNS query to the client using an address of the selected first GSLB node, thereby facilitating the selected first GSLB node in performing GSLB while resolving the DNS query. 1. A computer-implemented method for providing distributed global server load balancing (GSLB) over resources across multiple data centers , comprising:registering, at a directory node, a plurality of GSLB nodes, wherein a respective GSLB node is configured to provide GSLB services over a respective portion of the resources;receiving, at a directory node, a domain name system (DNS) query from a client;selecting, from the plurality of GSLB nodes, a first GSLB node based at least on the DNS query; andresponding to the DNS query to the client using an address of the selected first GSLB node, thereby facilitating the selected first GSLB node in performing GSLB while resolving the DNS query.2. The method of claim 1 , wherein registering the respective GSLB node comprises receiving claim 1 , at the directory node claim 1 , metadata associated with the respective GSLB node claim 1 , and wherein the metadata comprises one or more of:a node ID;an Internet Protocol (IP) address;a location; andone or more domain names supported by the respective GSLB node.3. The method of claim 2 , wherein selecting the ...

Method for improving survival rate of oysters by high static water pressure treatment

The invention discloses a method for improving the survival rate of oysters by high static water pressure treatment, relating to a culturing method of aquatic animals. Oyster embryos are treated by using a static water pressure; the pressure of the static water pressure is 10-40 MPa; the time for treating the oyster embryos by using the static water pressure is 10-50 min; and the oyster embryos can comprise at least 50% of oyster spermatovums growing to a blastula stage. Before treating the oyster embryos by using the static water pressure, the oyster embryos is filtered and concentrated by using a screen mesh; the concentration of the concentrated oyster embryos can be less than 100 oyster embryos per mL. The aperture of the screen mesh for concentrating the oyster embryos can be 25-60 mu m. The aspects of object, the principle, the method and the like are all obviously different from the conventional methods. The survival rate of the treated oyster embryos is obviously increased, the ...

Anti-wedging type high speed mixer drum

A high-speed asphalt agitator without jam has an agitating tank with antiwear liner on its arc bottom, and two agitating axle with blades. It features that the rotational center of said agitating axleand blades and the circular center of said arc bottom are eccentric, so the distance between the tracing of blades and the antiwear liner is gradually increased, resulting in no jam.

Anti-sticking device for PVC stabilizer production

The utility model provides an anti-sticking device for PVC stabilizer production. The feeding device comprises a conveying cylinder, a discharging pipe and a spiral conveying rod, a first strip-shapedopening is formed in the upper side of the outer surface of the end, close to the discharging pipe, of the conveying barrel. A housing is arranged on the upper side of the first strip-shaped opening;the housing is fixedly connected with the material conveying cylinder through screws; an electric push rod is mounted on the upper end surface of the housing; brushes are mounted at the output ends of the electric push rods; the hairbrush is arranged in the housing; a second strip-shaped opening is formed in the left end surface of the housing; an inserting plate is arranged in the second strip-shaped opening; a first threaded blind hole is formed in the right side of the upper end surface of the plugboard; and a second threaded blind hole is formed in the left side of the upper end face of the ...

GaN radio frequency front-end circuit, TR assembly and preparation method of GaN radio frequency front-end circuit

The invention provides a GaN radio frequency front-end circuit, a TR assembly and a preparation method thereof. The circuit comprises a transceiving port, a transmitting branch and a receiving branch. The source electrode of the first GaN power switch tube is connected between the output end of the emission branch and the output end of the GaN power amplifier, and the drain electrode of the first GaN power switch tube is grounded. And a series inductor is arranged at the output end of the GaN power amplifier. The series inductor and the equivalent capacitor of the first GaN power switch tube are used for realizing impedance matching of the output end of the GaN power amplifier, and the equivalent capacitor is the equivalent capacitor of the first GaN power switch tube in a cut-off state. According to the GaN power amplifier, the series inductor and the equivalent capacitor of the GaN power switch tube can form an LC impedance matching circuit, and impedance matching of the output end of ...

Preparation method of supported magnesium halide catalyst

The invention relates to a preparation method of supported magnesium halide catalyst, comprising the following steps: adding alcoholic compound, carboxylic acid anhydride compound and magnesium halide according to the mol ratio of 1-10:0.01-1.00:1 to C8-C12 solvent for reaction, the ratio of the solvent to the magnesium halide being 1-10ml/g, the temperature being 40-200 DEG C; adding the reactant to a reactor which contains titanium halide at the temperature of -25-40 DEG C, heating up to 40-80 DEG C and adding an internal electron donor with the mol ratio to the magnesium halide being 0.001-0.80:1, heating up to 80-135 DEG C, adding the internal electron donor with the mol ratio to the magnesium halide of 0.001-0.80:1, filtering the liquor after the reaction, adding titanium halide, reacting continuously at the temperature of 80-135 DEG C and obtaining the solid titanium catalyst; the volume ratio of the titanium halide to the alcoholic compound is 1-4:1.The method is used for olefin ...

High efficiency flotation device

The utility model discloses a high efficiency flotation device, it includes flotation device cell body (3), motor (1), bearing body, scraper blade motor (7), center a section of thick bamboo (4), mainshaft (2), impeller (5), the ore discharge end department of the flotation liquid level top of its characterized in that flotation device cell body (3) connects scraper blade (9), the foam of flotation device cell body (3) is piled up the blind spot and is connected boost motor (8), are boost motor (8) by boost motor axle (8 1 ), the vertical scraper blade of boost motor (8 2 )And the horizontal scraper blade of boost motor (8 3 )Connect the constitution, are scraper blade (9) by scraping plate shaft (9 1 ), horizontal scraper blade (9 2 )And vertical scraper blade (9 3 )Connect the constitution, scraper blade motor pulley (6) is connected in scraper blade motor (7), connect boost motor axle (8 through the belt respectively 1 )And scraping plate shaft (9 1 ), the utility model discloses it ...

Detection device and detection method of automobile steering device

The invention relates to a detection method, in particular to a detection method of an automobile steering device. According to the detection method of the automobile steering device, the total length, the left and right limit positions, the middle position, the spline, the flat square, the cube, the inner ball joint locking nut, the outer ball pin, the oil pipe type and the bottom gap of the mounting plate of the workpiece can be detected, so that the workpiece is comprehensively detected, the workpiece size is limited through the size of the detection device, detection is performed, and the detection efficiency is improved. The detection process does not need to be confirmed repeatedly, and a three-coordinate detector is not used in the detection process, so that the detection efficiency can be effectively improved, the detection requirements of the automobile steering device can be effectively met, and the production requirements of enterprises are met; the problem that an existing mode ...

Shared memory architecture-based multiprocessor communication device and method thereof

The invention relates to a shared memory architecture-based multiprocessor communication device and a method thereof. The device comprises a first CPU and a second CPU, wherein a section of memory space on the first CPU is mapped to a PCI address space of the second CPU to form a section of a linear shared memory space which can be accessed by both the first CPU and the second CPU so as to realize information sharing, and an address space used for transmitting ethernet messages between the first CPU and the second CPU and an address space for sharing objects between a plurality of tasks on the first CPU and the second CPU are arranged in the shared memory space to achieve information transfer. On the basis of taking characteristics of a conventional tight coupling mode as a reference, by combining with a commercial operation system, the shared memory architecture-based multiprocessor communication device establishes a shared memory architecture-based communication mechanism between the ...

Method for preparing beta-crystal form polypropylene resin by in-situ polymerization

The invention relates to a method for preparing a beta-crystal form polypropylene resin by in-situ polymerization. The method comprises the following steps: adding a Ziegler-Natta catalyst, a cocatalyst alkyl aluminum compound and an external electronic donor compound to a bulk polymerization reactor or a slurry polymerization reactor containing propylene to catalyze propylene for bulk polymerization or slurry polymerization so as to obtain polypropylene powder or spherical granules; and directly heating and melting the obtained powder or spherical granules or extruding through an extruder. The invention adopts one-step polymerization to obtain the polypropylene resin of which the beta-crystal content is 5%-40% and abandons the complicated post-processing and the step of adding beta-form nucleating agent additionally, thereby facilitating the operation. Besides, the polypropylene resin has superior impact resistance and wide application and can be used in the fields such as special resin ...

CATALYST FOR HOMOPOLYMERIZING AND COPOLYMERIZING PROPYLENE AND ITS PREPARATION AND USE

A catalyst for homopolymerizing and copolymerizing propylene and its preparation and use. The catalyst component includes titanium compound containing at least one Ti-halogen bond and at least two kinds of electron donor compounds A and B supported on MgCl 2 .nROH adduct, wherein the electron donor compound A is a compound of formula (I), the electron donor compound B is ester or ether compound; the molar ratio between compound A and compound B is 0.1-5; the molar ratio between the total amounts of the two kinds of electron donors and MgCl 2 .nROH is 0.01-1, based on the amount of MgCl 2 .nROH; and the molar ration between the titanium compound containing Ti-halogen bond and MgCl 2 .nROH is 1-200. The catalyst has high activity, high stereospecificity and good copolymerization performance. In addition, the morphology of the polymer obtained therefrom is good.

Porous spherical propylene polymerization catalyst and preparation method thereof

The invention relates to a porous spherical propylene polymerization catalyst and a preparation method thereof. The preparation method comprises the following steps: reacting a magnesium compound and an organic alcoholic compound, and contacting a product with a carboxylic acid ramification to generate an internal electron donor in situ; adding a halogenated alkane solution which contains a template agent to a system; mixing a formed mixture with a titanium compound for reaction, and adding an emulsifying agent and a turbulence weakening agent to form a stable liquid-liquid two-phase system; increasing the temperature of the formed liquid-liquid two-phase system for solidification, and precipitating solid granules to obtain a suspending liquid; washing the suspending liquid by using the halogenated alkane solution to remove the template agent, washing by using an inert hydrocarbon solvent, and drying in hot nitrogen to obtain catalyst granules. The porous spherical propylene polymerization ...

Apparatus and method for secure boot environment

In some embodiments, a processor-based system may include at least one processor, at least one memory coupled to the at least one processor, a boot block stored at a first memory location, a capsule update stored at a second memory location, a startup authenticated code module to ensure the integrity of the boot block upon a restart of the processor-based system, code which is executable by the processor-based system to cause the processor-based system to validate the boot block with the startup authenticated code module upon the restart of the processor-based system, and, if the boot block is successfully validated, to validate the capsule update for the processor-based system with the startup authenticated code module. Other embodiments are disclosed and claimed.

Fixed mould of side wall rubber watertight strip

The utility model provides a fixed mould of side wall rubber watertight strip, include along the two half module of side wall direction of height extension, the half module includes the panel in "7" shape cross -section and support panel's carriage, the panel is fixed in adjacent two orthogonal edges of carriage, the panel of preceding half module includes posterior lateral plate and the right side board that contacts with the concrete, the panel of back half module includes preceding curb plate and the right side board that contacts with the concrete, the two half module all lie in the connector with one side around and the interval parallel be fixed in the connector, preceding curb plate, posterior lateral plate and connector enclose rubber watertight strip holding tank, rubber watertight strip holding tank groove depth is difference half the of rubber watertight strip width and movement joint width, the thickness that the interval of preceding curb plate and posterior lateral plate equals ...

Dual-frequency low-noise amplification circuit

The invention provides a double-frequency low-noise amplification circuit. The double-frequency low-noise amplification circuit comprises a first amplification branch and a second amplification branch, the first amplification branch and the second amplification branch are connected in parallel; the input end of the first amplification branch and the input end of the second amplification branch serve as the input ends of the double-frequency low-noise amplification circuit; the output end of the first amplification branch and the output end of the second amplification branch serve as the output end of the double-frequency low-noise amplification circuit. The first amplification branch is used for filtering the input signal to obtain a signal of a first working frequency band and amplifying the signal of the first working frequency band; the second amplification branch is used for filtering the input signal to obtain a signal of a second working frequency band and amplifying the signal of ...

Comprehensive, Relevant, and Dynamic Data Searching in a Virtualization Environment

A method includes indexing data and/or metadata in online virtual machines (VMs), offline VMs, virtual applications, and/or snapshots thereof on one or more host server(s) in a virtualization environment through a search architecture in the virtualization environment. The online VMs are VMs that are powered on, and the offline VMs are VMs that are powered off. The method also includes maintaining a database of the indexed data and/or metadata in the online VMs, the offline VMs, the virtual applications, and/or the snapshots thereof to enable a comprehensive search result to a search query through the search architecture. The database is associated with the search architecture.

Portable heat dissipation case based on computer

The utility model discloses a portable heat dissipation case based on a computer, which comprises a case shell, vent holes are symmetrically formed in the bottom end of the case shell, a heat dissipation mechanism is arranged in the case shell, and the heat dissipation mechanism comprises a fixing frame, a fan, a driven gear, a conical pipe, a shunt pipe, a through hole, a driving gear and a rotating motor. A fixing frame is fixedly installed on the top of the inner side of the case shell, a fan is installed in the middle of the top end of the fixing frame, workers can conveniently and evenly conduct heat dissipation treatment on the interior of the case shell through the heat dissipation mechanism, and therefore the heat dissipation effect in the case shell is improved; according to the computer case, parts in the computer case shell are prevented from being damaged due to the fact that the local temperature in the computer case shell is too high, workers can conveniently protect the bottom ...

Terminal energy polymer and control method thereof, electronic equipment and readable storage medium

The invention relates to the technical field of power grid equipment control, in particular to a terminal energy polymer and a control method thereof, electronic equipment and a readable storage medium. The tail end energy polymer control method comprises the steps that if an intelligent adjusting module receives a peak regulation instruction or a voltage regulation instruction sent by a dispatching control master station, the intelligent adjusting module controls an energy storage module to start charging or discharging, then controls a photovoltaic inverter to absorb reactive power or send reactive power, then regulates and controls the electricity consumption of an electricity consumption load, and finally controls the energy storage module to start charging or discharging; and the working parameters of the tail end energy polymer conform to the working parameters corresponding to the peak regulation instruction or the voltage regulation instruction. When the system is used, after a ...

Broadband radar coherent clutter simulation method based on DEM data

The invention belongs to the technical field of radar simulation, and particularly relates to a broadband radar coherent clutter simulation method based on DEM data. The broadband radar coherent clutter simulation method comprises the following steps that firstly, simulation parameters are loaded; secondly, data of a nth flight path point are read; thirdly, the radar platform position and the sum beam irradiation direction are determined; fourthly, the radar irradiation area is determined through an antenna pattern; fifthly, a ground scattering unit is divided in the azimuth direction and the pitching direction at intervals with dtheta and dphi serving as the pitching angle and the azimuth angle respectively, and the area of the scattering unit is calculated; sixthly, the voltage power and amplitude of an echo of the scattering unit are calculated according to the radar equation; seventhly, an echo voltage signal of the scattering unit is calculated according to the obtained clutter amplitude ...

Arylaminosilane Compound, Propylene Polymerization Catalyst And Preparation Thereof

The present disclosure discloses an arylaminosilane compound, a propylene polymerization catalyst and preparation thereof. The arylaminosilane compound has a structure of 2. The arylaminosilane compound according to claim 1 , wherein Ris methyl claim 1 , ethyl claim 1 , propyl claim 1 , trimethylsilyl claim 1 , triethylsilyl claim 1 , dimethylethylsilyl or methyldiethylsilyl.3. The arylaminosilane compound according to claim 1 , wherein R claim 1 , R claim 1 , R claim 1 , Rand Rare each independently H claim 1 , methyl claim 1 , ethyl claim 1 , propyl or isopropyl.4. The arylaminosilane compound according to claim 1 , wherein R claim 1 , Rand Rare each independently methyl claim 1 , ethyl claim 1 , n-propyl claim 1 , isopropyl claim 1 , methoxy claim 1 , ethoxy or propoxy.5. The arylaminosilane compound according to claim 1 , wherein Ris methyl or trimethylsilyl;{'sub': 2', '3', '4', '5', '6', '3', '4', '5', '2', '6, 'R, R, R, Rand Rare each H; or R, Rand Rare each H, Rand Rare each isopropyl;'}{'sub': 7', '8', '9, 'R, Rand Rare each independently methyl, methoxy or ethoxy.'}6. The arylaminosilane compound according to claim 5 , wherein the arylaminosilane compound is (N-methylanilino)trimethoxysilane claim 5 , (N-methylanilino)methyldimethoxysilane claim 5 , (N-methylanilino)triethoxysilane claim 5 , (N-methylanilino)methyldiethoxysilane claim 5 , (2 claim 5 ,6-diisopropyl-N-trimethylsilylanilino)trimethoxysilane claim 5 , (2 claim 5 ,6-diisopropyl-N-trimethylsilylanilino)methyldimethoxysilane claim 5 , (2 claim 5 ,6-diisopropyl-N-trimethylsilylanilino)triethoxysilane claim 5 , or (2 claim 5 ,6-diisopropyl-N-trimethylsilylanilino)methyldiethoxysilane.8. The method according to claim 7 , wherein in the first method or the second method claim 7 , the molar ratio of the arylamine to the alkyl lithium is 1:(1 to 3).9. The method according to claim 7 , wherein in the first method claim 7 , the molar ratio of the arylamine to RRRSiCl is 1:(1 to 3);{'sub': 7', 'm', '4-m, ...

Preparation method of poly-alpha-olefin

The invention discloses a preparation method of poly alpha-olefin. The preparation method comprises the following steps: pretreating alpha-olefin by using an activating agent; activating the metallocene compound with methylaluminoxane; adding the activated metallocene compound into treated alpha-olefin, controlling the reaction temperature, and carrying out polymerization reaction to obtain a polymerization product; adding a terminator for quenching reaction; and removing the terminator, the catalyst residue, the solid residue and the unreacted monomer to obtain the poly-alpha-olefin. According to the invention, the polymerization degree of alpha-olefin can be effectively controlled, poly-alpha-olefin with different viscosities can be obtained, and the viscosity index is high.

NETWORK TRAFFIC OPTIMIZATION USING DEDUPLICATION INFORMATION FROM A STORAGE SYSTEM

The technology disclosed herein enables optimization of network traffic by deduplicating data for transmission using deduplication information generated by a storage system from which the data is being transferred. In a particular embodiment, a method provides, in a network traffic optimizer, receiving first data from a first storage system for transmission over the communication network. The first storage system performed a deduplication process on the first data when storing the first data therein and the deduplication process generated first deduplication information for the first data. The method further provides deduplicating the first data using the first deduplication information in the first storage system and transmitting the first data over the communication network.

Mini-type quantum relevancy photon pair source with adjustable wavelength and controllable frequency spectrum and generating method

The invention belongs to the technical field of quantum, and provides a quantum relevancy photon pair source with the adjustable wavelength and the controllable frequency spectrum, and the quantum relevancy photon pair source has the advantages of being small, low in cost and high in purity. According to the technical scheme, a pulse laser with the tunable central wavelength and bandwidth in a wave band ranging from 950 nm to 1150 nm serves as a pumping light; a photonic crystal fiber with specific micro-structure parameters or a micro-nanofiber is selected to serve as a nonlinearity medium, and a quantum relevancy photon pair with the adjustable wavelength and the controllable frequency spectrum is generated by tuning the central wavelength and bandwidth of the pumping light through the spontaneous four-wave mixing process of the nonlinearity medium. The method is mainly applied to quantum technology occasions.

Kovar ring drying device

The invention relates to the technical field of mechanical equipment manufacturing, in particular to a kovar ring drying device which comprises a base and a bag net hung on the base, and a hot air source for drying and blowing the bag net is arranged at the bag net. The base is further provided with an axial driving part which repeatedly impacts the bottom of the pocket net from bottom to top in the vertical direction and a radial driving part which is matched with the axial driving part at the same time and repeatedly pokes the bottom of the pocket net in the radial direction. Radial and axial impact is carried out on the bottom of the pocket net, so that the Kovar rings in the pocket net roll continuously, heating is uniform, and the drying efficiency is improved.

Vehicle body collision safety structure at front end of vehicle

A vehicle front end vehicle body collision safety structure comprises a guide structure, an energy absorption structure, an A column and a supporting structure. One end of the guide structure is fixedly connected to the column A, the other end of the guide structure is fixedly connected with one end of the supporting structure, and the other end of the supporting structure is fixedly connected to the column A through the energy absorption structure; the two guiding structures are symmetrically arranged at the front end of the vehicle, and the ends, connected with the supporting structures, of the guiding structures bend towards the inner side of the vehicle. By means of the guide device, the stretch bending direction is the Y direction of the vehicle body and is bent towards the interior of the vehicle, an outwards-arched closed-section aluminum profile structure is formed in a wheel casing area, the outwards-arched shape of the novel aluminum profile wheel casing reinforcing beam makes ...

Method for isolating third party pre-boot firmware from trusted pre-boot firmware

In one embodiment, the present invention includes a method for determining if an isolation driver is present and a processor supports virtualization, launching the isolation driver in a first privilege level different than a system privilege level and user privilege level, creating a 1:1 virtual mapping between a virtual address and a physical address, using the isolation driver, and controlling access to a memory page using the isolation driver. Other embodiments are described and claimed.

Microcosmic track detection analysis system and detection method thereof

The invention discloses a microcosmic track detection analysis system. The detection analysis system comprises an image acquisition device (100), a control device (200) and a contrastive analysis device (300), wherein the image acquisition device (100) is used for acquiring microcosmic track information of an object (400) to be detected; the control device (200) is used for controlling movement and location of the image acquisition device (100), realizing accurate acquisition of the microcosmic track information of the object (400) to be detected and sending the accurately acquired microcosmic track information to the contrastive analysis device (300); the contrastive analysis device (300) is used for comparing and analyzing the accurately acquired microcosmic track information and pre-stored comparison information and outputting an analysis result. The method also discloses a detection method of the microcosmic track detection analysis system. The microcosmic track detection analysis system ...

Olefin polymerization catalyst and preparation method and use thereof

An olefin polymerization catalyst and preparation method and use thereof are provided. The components of the catalyst comprise an active magnesium halide, a titanium compound containing at least one Ti-halide bond loaded on the active magnesium halide, and an internal electron donor selected from one or more silicon esters compounds having formula (I). The method for preparing the catalyst components is that: adding spherical magnesium chloride alcoholate particles and the electron donor into the solution of titanium compound in sequence, and processing with the titanium compound for one or more times to obtain the catalyst. The catalyst system used for the olefin polymerization comprises the catalyst components, a cocatalyst and an external electron donor. The catalyst has high activity for the propylene polymerization, and the activity is 4399 gPP/gTi·h(50° C., 1 h, slurry polymerization at atmospheric pressure), and the isotacticity of the polymer is 98%.

Preparation method of supported magnesium halide catalyst

The invention relates to a preparation method of supported magnesium halide catalyst, comprising the following steps: adding alcoholic compound, carboxylic acid anhydride compound and magnesium halideaccording to the mol ratio of 1-10:0.01-1.00:1 to C8-C12 solvent for reaction, the ratio of the solvent to the magnesium halide being 1-10ml/g, the temperature being 40-200 DEG C; adding the reactantto a reactor which contains titanium halide at the temperature of -25-40 DEG C, heating up to 40-80 DEG C and adding an internal electron donor with the mol ratio to the magnesium halide being 0.001-0.80:1, heating up to 80-135 DEG C, adding the internal electron donor with the mol ratio to the magnesium halide of 0.001-0.80:1, filtering the liquor after the reaction, adding titanium halide, reacting continuously at the temperature of 80-135 DEG C and obtaining the solid titanium catalyst; the volume ratio of the titanium halide to the alcoholic compound is 1-4:1.The method is used for olefinpolymerization ...

Volume control method, apparatus, and terminal

The embodiment of the invention discloses a volume control method, apparatus, and terminal. The volume control method may comprise: obtaining the current volume value of audio data; calculating a volume control threshold value of the audio data according to an incidence relation between the volume value and the volume control threshold value, and controlling the peak volume value of the audio data according to the volume control threshold value. The volume control method intelligently sets the volume control threshold value, achieves volume control based on the volume control threshold value, enhances the flexibility of volume control, and increases the intellectuality of the volume control.

Epoxy molding plastic overlap test mould

The utility model provides an epoxy molding plastic overlap test mould, includes mould, lower mould, it is equipped with the hole of moulding plastics to go up the mould, the lower mould be equipped with with the last mould corresponding strip -shaped groove formula die cavity in hole of moulding plastics, with the die cavity is equipped with the recess that 5 degree of depth are different mutually perpendicularly, the depth of groove is 5 mu m, 10 mu m, 15 mu m, 20 mu m, 50 mu m respectively. Go up the mould and be equipped with the location pinhole, be equipped with locating pin corresponding with it at the lower mould. It all is equipped with the handle locating hole to go up the lower mould. The utility model discloses measuring ring oxygen moulding compound can be measured according to a direction through slide caliper rule when the overlap length of different degree of depth recesses in proper order, need not to calculate, and the direct read slide caliper rule show data, has improved ...

Method for improving survival rate of oysters by high static water pressure treatment

The invention discloses a method for improving the survival rate of oysters by high static water pressure treatment, relating to a culturing method of aquatic animals. Oyster embryos are treated by using a static water pressure; the pressure of the static water pressure is 10-40 MPa; the time for treating the oyster embryos by using the static water pressure is 10-50 min; and the oyster embryos can comprise at least 50% of oyster spermatovums growing to a blastula stage. Before treating the oyster embryos by using the static water pressure, the oyster embryos is filtered and concentrated by using a screen mesh; the concentration of the concentrated oyster embryos can be less than 100 oyster embryos per mL. The aperture of the screen mesh for concentrating the oyster embryos can be 25-60 mu m. The aspects of object, the principle, the method and the like are all obviously different from the conventional methods. The survival rate of the treated oyster embryos is obviously increased, the ...

Solar energy intelligence environment -friendly trash can lid

The utility model relates to a solar energy intelligence environment -friendly trash can lid, including bung, fixed chassis, control box, be equipped with the support column on the fixed chassis, theside through ratchet and bung on the support column rotates to be connected, because the bung is a cantilever beam, the atress is too big, and the atress that has adopted ratchet to reduce it is equipped with the input mouth on the bung, it is equipped with the door that opens and shuts to put in mouthful department's symmetry, opening and shutting one side of door and installing on the optical axis through linear bearing, install on the lead screw through screw nut relative one side, and the output that shaft coupling and motor are passed through to the one end of lead screw links to each other, the rubbish bung opens and shuts after responding to the people voluntarily, avoids the direct contact of staff, keeps the health, when detect to lead to fullly or during the conflagration, carryout ...

Server, mainboard and external equipment fault positioning method of server

The invention discloses a server, a mainboard and an external equipment fault positioning method of the server, which are applied to the technical field of fault processing, and comprise the following steps: sending an information acquisition instruction to each expansion card, so that an information acquisition device of any expansion card sends the information acquisition instruction to each expansion card after receiving the instruction; determining the port information of the CPU connected with each slot on the expansion card, determining the physical position corresponding to each port information according to the corresponding relationship between the slot of the expansion card and the physical position, and feeding back the physical position to the mainboard; receiving and recording feedback data of each expansion card; when it is monitored that any external device breaks down, the physical position of the external device is obtained based on the CPU port information of the external ...

Electromagnetic deep water level measuring device

The utility model discloses an electromagnetic deep water level measuring device. The utility model belongs to the technical field of foundation pit dewatering, the device comprises a box body, a lifting device arranged in the box body, a control box and a main power supply, a distance measuring device is arranged on the lower side of the lifting device; a signal device is arranged at one end of the lifting device; wherein the lifting device comprises a motor, a rotating shaft fixed at the output end of the motor and an electric lead wound on the rotating shaft, the electric lead is connectedwith an auxiliary power supply and a probe in series, the distance measuring device comprises a fixed shaft and an encoder V-shaped wheel, the signal device comprises a fixed elastic sheet and a dynamic elastic sheet, and a plurality of springs are arranged between the dynamic elastic sheet and the inner wall of the box body. The motor rotates to drive the conductor wire to ascend and descend, theencoder ...

Support

The invention relates to a support which is used for supporting electronic equipment and comprises a support supporting plate and an air cooling assembly. Wherein the support supporting plate is used for supporting electronic equipment and comprises a first surface and a second surface which are deviated from each other, the first surface faces the electronic equipment, the air cooling assembly is arranged in the support supporting plate, and the air cooling assembly comprises an airflow driving part, an air inlet channel and an air outlet channel; an air outlet of the airflow driving part is opposite to the first surface, a first preset space is formed between the air outlet and the first surface, an air inlet of the airflow driving part is opposite to the second surface, a second preset space is formed between the air inlet and the second surface, and the air outlet channel communicates with the air outlet through the first preset space; the air inlet channel communicates with the air ...

Cross cavity structure and manufacturing method thereof, microwave circuit and electronic equipment

The invention provides a crossed cavity structure and a manufacturing method thereof, a microwave circuit and electronic equipment. The structure comprises a first cavity, a second cavity and a cover plate, the first cavity and the second cavity intersect with each other, a first groove is formed in the cavity wall of the second cavity, a partition beam is arranged on the cover plate, a partition plate is connected to the partition beam, and the partition plate is inserted into the first groove. According to the invention, the cross resonance condition of the cavity can be improved.

SYSTEM AND METHOD TO SECURE BOOT BOTH UEFI AND LEGACY OPTION ROM'S WITH COMMON POLICY ENGINE

In some embodiments, the invention involves using a policy engine during boot, in the driver execution environment (DXE) phases to authenticate that drivers and executable images to be loaded are authenticated. Images to be authenticated include the operating system (OS) loader. The policy engine utilizes a certificate database to hold valid certificates for third party images, according to platform policy. Images that are not authenticated are not loaded at boot time. Other embodiments are described and claimed.

Sludge dewatering system

The invention provides a sludge dewatering system, which comprises a stacked screw type dewatering machine, a sludge pump, a dosing pump, a stirrer and a controller, the feed port of the stacked screw type dewatering machine is communicated with the discharge port of the sludge pump and the discharge port of the dosing pump through pipelines, the discharge port of the sludge pump is provided with a sludge flowmeter, the discharge port of the dosing pump is provided with a dosing flowmeter, and the stirrer is connected with the controller. A sludge flow meter is arranged at a sludge outlet of the stacked screw type dehydrator, a filtrate flow meter is arranged at a filtrate outlet of the stacked screw type dehydrator, the controller is electrically connected with the sludge pump, the dosing pump, the stirrer, the sludge flow meter, the dosing flow meter and the filtrate flow meter, the screw pitch of the stacked screw type dehydrator is 3-4mm, the diameter of a screw shaft is 40-55mm, the ...

Network cache system for reducing redundant data

Embodiments include a local cache management system that is configured to be coupled to a local cache and that includes an index engine configured to store fingerprints of message segments stored in the local cache and a redundancy management engine coupled to the index engine. The redundancy management engine includes an adaptive emitter configured to receive a message segment to be transmitted to a remote device, determine expected latency costs of a plurality of transmission algorithms, and select a transmission algorithm, such as by selecting the lowest expected latency cost. The adaptive emitter is also configured to determine whether the message segment is stored within a remote cache management system associated with the remote device, and transmit the message segment through a network to the remote cache management system using the selected transmission algorithm upon a determination that the message segment is not stored within the remote cache management system.

Method for copolymerizing isobutene and maleic anhydride

The invention relates to a method for copolymerizing isobutene and maleic anhydride, which comprises the following steps: S1, introducing isobutene and a maleic anhydride solution containing an initiator into a supergravity reactor, blending the isobutene and the maleic anhydride, and carrying out pre-reaction; and S2, introducing the liquid-phase product obtained in the step S1 into a reaction tube reactor for continuous reaction. The invention provides a novel method for polar copolymerization of isobutene, isobutene and maleic anhydride are fully blended in an extremely short time through a supergravity reactor and a reaction tubular reactor, and the efficiency of further polar copolymerization reaction is accelerated by controlling the time and temperature of polar reaction and the concentration distribution of reactants. The reaction time of further polar copolymerization is shortened, the polar reaction cost is reduced, and the generation rate of reactants is increased; and a more ...

Machine learning prediction of virtual computing instance transfer performance

The disclosure provides an approach for preventing the failure of virtual computing instance transfers across data centers. In one embodiment, a flow control module collects performance information primarily from components in a local site, as opposed to components in a remote site, during the transfer of a virtual machine (VM) from the local site to the remote site. The performance information that is collected may include various performance metrics, each of which is considered a feature. The flow control module performs feature preparation by normalizing feature data and imputing missing feature data, if any. The flow control module then inputs the prepared feature data into machine learning model(s) which have been trained to predict whether a VM transfer will succeed or fail, given the input feature data. If the prediction is that the VM transfer will fail, then remediation actions may be taken, such as slowing down the VM transfer.

PVC (polyvinyl chloride) pipe extrusion forming process capable of improving tensile strength effectively

A PVC (polyvinyl chloride) pipe extrusion forming process capable of improving tensile strength effectively is characterized in that a pipe formula comprises a PVC resin and epoxy resin copolymer, an impact-resistant modifier, a stabilizer, a processing modifier, filler, pigment and an external lubricant. The process comprises specific steps as follows: the raw materials are weighed, kneaded, extruded to be granulated, subjected to extrusion forming and cooling forming, cut and inspected, and the finished product is obtained. A plastic pipe has the prominent advantages as follows: the relative density is small and is 1/4-1/7 that of metal; the electric insulation property and the chemical stability are good; mounting and construction are convenient, and maintenance is easy; the unit energy consumption is low.

Single electron source X-ray tube, X-ray tube assembly and corresponding CT equipment

The invention discloses a single electron source X-ray tube, an X-ray tube assembly and corresponding CT equipment. The X-ray tube comprises a single electron source and at least two anode target surfaces, the single electron source is fixed in the middle of a tube core structure of the X-ray tube, and two exposure windows are symmetrically arranged at two ends of the X-ray tube and respectively correspond to at least two anode target surfaces; the at least two grids are respectively arranged on an electron motion path of the single electron source towards each anode target surface; and a grid voltage is applied to the grid to control the deflection electric field and control the on-off and the flow direction of the electron flow emitted to the anode target surface, so that the output control of the X-ray is realized. According to the invention, the problem of limited expansion caused by factors such as space utilization rate, connection mode and the like during multi-source expansion of ...

Method of diagnosing data delivery over a network between data centers

The disclosure provides an approach for diagnosing a data plane of a network, wherein the network spans a first data center and a second data center, and wherein the second data center is remote to the first, the method comprising: accessing a secure connection between the first data center and the second data center; modifying, by the first performance controller, firewall settings of the first data center from a first setting to a second setting; opening on the second data center an instance of a performance tool; opening on the first data center a client of the instance of the performance tool; sending data packets over the data plane of the network; receiving the data packets; generating metrics associated with the data packets; and modifying firewall settings of the first data center from the second setting to the first setting.

Baffle for wide rectangular thin-plate weirs such as small-sized basin rainfall runoff field observation cofferdams

The invention belongs to the technical field of small-sized staff gauge station construction, and particularly relates to a baffle for wide rectangular thin-plate weirs such as small-sized basin rainfall runoff field observation cofferdams. According to the baffle, a 5mm-thick 301 stainless steel sheet material after mechanical hardening machining is used for manufacturing a weir plate, the top of the plate is 2mm thick and the baffle is installed on a wide rectangular thin-plate weir and used for small-sized basin rainfall runoff field observation. The machining precision and the abrasion degree of the upper-stream weir peripheral angle of the weir plate have great influences on runoff observation precision. The baffle can greatly reduce the impact abrasion to the weir plate from small gravel, silt and other impurities, overcome the defects that a traditional cofferdam baffle is prone to being rusted and not resistant to corrosion or impact, guarantee years of long-time sequence continuous ...

High magnesium slag doped cement

The invention discloses high magnesium slag doped cement. The raw materials of the cement comprise the following main minerals in percentage by weight: 65-82% of limestone, 1-20% of magnesium slag, 5.5-9.4% of sandstone and 4-8% of coal gangue, wherein the magnesium slag comprises the following main chemical components: less than or equal to 55% and greater than or equal to 50% of CaO, greater than or equal to 20% and less than or equal to 30% of SiO2, greater than or equal to 8% and less than or equal to 12% of MgO, greater than or equal to 4% and less than or equal to 6% of Fe2O3, and greater than 0% and less than or equal to 2% of Al2O3. The cement is prepared by sequentially passing blended raw materials through a raw material drying mill, a raw material homogenizing silo, a decomposing furnace and a rotary kiln, blending the prepared clinker with coal ash, desulfurization gypsum and slag, and feeding the above materials into a cement mill. As high as 20% of magnesium slag is doped ...

Epoxy resin composition suitable for high voltage surface mounting device packaging

The invention discloses an epoxy resin composition suitable for high voltage device packaging. The composition mainly comprises (A) epoxy resin, (B) a curing agent, (C) an accelerating agent, (D) inorganic filler, (E) a coupling agent, and (F) a stress absorbing agent, wherein the (A) is one or two of the epoxy resin expressed in the formulae (1 and 2), and the mass of the (A) is 5-15% of the total mass of the epoxy resin composition; the (C) is the accelerating agent of which the structure is shown in the formula 4, and the mass of the (C) is 0.1-2.5% of the total mass of the epoxy resin composition. The epoxy resin composition suitable for high voltage surface mounting device packaging has high glass transition temperature and low water absorption rate, is more stable than the conventional common system at high temperature, has low possibility of generating thermal decomposition, is low in thermal weight loss rate when at 150 DEG C after 1000 h, and has low possibility of generating micromolecular ...

Enabling byte-code based image isolation

In one embodiment, the present invention includes a method for setting an extensible policy mechanism to protect a root data structure including a page table, interpreting a bytecode of a pre-boot driver in a byte code interpreter, and controlling access to a memory location based on the extensible policy mechanism. Other embodiments are described and claimed.

Method for controlling spectral properties of optical quantum states using quantum interference in cascaded waveguide structure

The present invention discloses a method for controlling spectral properties of optical quantum states using quantum interference in cascaded waveguide structure comprises the following steps: adopting a multi-stage cascaded waveguide structure sequentially consisting of a segment of nonlinear medium, a segment of dispersive medium, . . . and a segment of nonlinear medium, or adopting a two-stage cascaded waveguide structure sequentially consisting of a segment of nonlinear medium, a segment of dispersion-controllable dispersive medium and a segment of nonlinear medium; pumping the multi-stage cascaded waveguide structure or two-stage cascaded waveguide structure by using pulsed laser to generate optical quantum states through the cascaded parametric process in the cascaded waveguide structure. The spectral property of the optical quantum state can be flexibly adjusted by changing the number of stages, the length and dispersion property of the dispersive media.

Take piston shoes snow removing shovel

The utility model provides a take piston shoes snow removing shovel, spiller (2) are through the bolt fastening in shovel board (1) lower part, spring (11) one end is connected on shovel board (1), and the other end is connected at shovel board link (3) lower extreme to shovel board link (3) is connected with the shovel board (1) through the pivot, link (4) is connected with the shovel board link (3) through the bolt, go up support arm (5) and bottom suspension brace (9) one end respectively by pivot and link (4) connection, the pivot is passed through respectively and stores pylon (8) connection to one end, adjusting oil cylinder (four to six -tenehs) one end is connected on stores pylon (8) from top to bottom, and one end is connected in bottom suspension brace (9), and the bolt fastening is passed through on stores pylon (8) in power pack (7), bolted connection is passed through on link (4) in piston shoes (10), the pinned connection is passed through respectively on stores pylon (8) ...

Electric vacuum silver base alloy solder for vacuum electronic device brazing sealing and preparation method thereof

The invention relates to an electric vacuum silver base alloy solder for vacuum electronic device brazing sealing and preparation method thereof and belongs to the technical field of soldering material. The novel low silver electric vacuum soldering material is provided, the chemical component and the mass percent of the soldering material are as follows: 55-58% of Ag, 0-4% of Sn, 0-8% of In, and remaining Cu, the soldering material at least comprises Sn or In. The silver content of the electric vacuum soldering material is low, the low vapour pressure element is not contained, and the soldering performance and the processing performance are excellent, the performing soldering terminal of the thickness for 0.05-0.15mm can be prepared, the Bag 72Cu electric vacuum soldering material can be replaced for the soldering and sealing operation for the electric vacuum device and the cost of the electric vacuum soldering terminal can be reduced.

Single-pole double-throw microwave switch

The invention is suitable for the technical field of semiconductors, and provides a single-pole double-throw microwave switch. The single-pole double-throw microwave switch comprises a first transistor, a second transistor, a first inductor, a second inductor, an input port, a first output port, a second output port, a first control port and a second control port, the first end of the first transistor is connected with the input port, the second end of the first transistor is connected with the first output port, and the gate of the first transistor is connected with the first control port; the first end of the second transistor is connected with the input port, the second end of the second transistor is connected with the second output port, and the gate of the second transistor is connected with the second control port; the first inductor is connected in parallel between the first end of the first transistor and the second end of the first transistor. The second inductor is connected ...

Radar altimeter simulator

The invention belongs to the technical field of an electromagnetic property signal simulator, and particularly relates to a radar altimeter simulator. The radar altimeter simulator mainly comprises a main control computer module, an intermediate frequency echo generating module and a microwave module, and simulates and reproduces dynamic echo signals of a pulse radar altimeter in a practical system, wherein the main control computer module is a CPCI (Compact Peripheral Component Interconnect) single board computer, which controls working states of the intermediate frequency echo generating module and the microwave module, provides module testing information, manages echo files, and receives echo files, simulation commands and radar track data sent to a radar altimeter signal simulator by an external system; the intermediate frequency echo generating module consists of a DSP (Digital Signal Processor) parallel simulation network and a D/A (Digital-to-Analog) conversion board, realizes generation ...

Portable device for on-site water sampling of gold mine

The invention discloses a portable device aiming at gold mine on-site water sampling, and belongs to the technical field of liquid sample sampling devices.The portable device comprises a storage shell, a supporting and stabilizing assembly is arranged outside the storage shell, an operation cavity and an operation cavity are formed in the storage shell, a sampling and storing assembly is arranged in the operation cavity, and the operation cavity is internally provided with a sampling and storing assembly; a water taking operation assembly is arranged in the operation cavity; wherein the supporting and stabilizing assembly comprises four arc-shaped grooves, and the four arc-shaped grooves are symmetrically formed in the outer portion of the storage shell. In the storage device, by arranging the supporting and stabilizing assembly, a worker holds a U-shaped connecting rod by hand to drive a conical foot margin to slide downwards in a fixing pipe body; the bottom of the conical foot margin ...

Large capacity capacitance measuring circuit

The utility model relates to a capacitance test instrument instrument technical field discloses a large capacity capacitance measuring circuit. It includes that voltage comparater trigger circuit, electric capacity lets out discharge circuit, fourth gear position charging circuit, MCU module circuit, auxiliary power circuit, the interrupt port of the MCU module among voltage comparater trigger circuit and the MCU module circuit is connected, and the MCU module is connected with fourth gear position charging circuit through decoder U1, and fourth gear position charging circuit is connected with the electric capacity test terminal that awaits measuring, and the test terminal is still let out the discharge circuit with electric capacity and is connected, and auxiliary power circuit provides the power for the MCU module and the electric capacity that awaits measuring, the utility model discloses a fourth gear position charging circuit treats the test capacitor and charges, corresponds the capacitance ...

Diol sulfonate compound as well as preparation method and application thereof

The invention provides a diol sulfonate compound as well as a preparation method and application thereof. The diol sulfonate compound has the following general formula I as shown in the description, wherein R1 and R2 are selected from the group consisting of linear and branched C1-C20 alkyl, C3-C20 cycloalkyl, C6-C20 aryl, C7-C20 aralkyl and alkaryl, C2-C20 olefin and C6-C20 fused polycyclic aryl, R3 to R6 are selected from the group consisting of hydrogen, halogen atoms, linear and branched C1-C20 alkyl, C3-C20 cycloalkyl, C6-C20 aryl, C7-C20 aralkyl and alkaryl, C2-C20 alkylene and C6-C20 fused polycyclic aryl, and R3 to R6 are not all hydrogen and/or halogen atoms. The diol sulfonate compound is prepared by esterifying diol. The invention also provides application of diol sulfonate in preparation of an olefin polymerization catalyst.

Auto-discovery service and method of discovering applications within a virtual network

Embodiments provide a system including a first host computing device that includes a first virtual machine (VM) and a first application. The system also includes a second host computing device including a virtualization software layer, a second VM, and an auto-discovery service at least partially instantiated within the virtualization software layer. The auto-discovery service is configured to receive a message and an auto-discovery packet from a second application executing on the second VM. The auto-discovery service inserts an option into the auto-discovery packet, and transmits the auto-discovery packet to the first application. The option in the auto-discovery packet includes the message received from the second application.

Oil-filled cable intelligent emergency supply system and method thereof

The invention relates to an oil-filled cable intelligent emergency supply system and a method thereof.The system comprises a plurality of pressure tanks communicated with an oil-filled cable, one end of each pressure tank is connected to an oil supplementing tank through an electromagnetic valve and a ball valve, and the input end of each pressure tank is connected to an intelligent control terminal through an oil supply detection module; and the intelligent control terminal is connected with the electromagnetic valve. Compared with the prior art, the internal oil pressure condition of the oil-filled cable can be automatically detected in real time, and once the internal oil pressure of the cable is suddenly reduced, uninterrupted oil supply can be accurately provided in time, and oil supply of an oil leakage line is maintained. Not only can precious first-aid repair time be won for operators to arrive at the scene to take emergency measures, but also the working danger of emergency treatment ...

Virtual Network Flow Monitoring

Embodiments perform end-to-end virtual network flow monitoring in a virtual datacenter and provide differentiated views to users based on user role. A target flow pattern describing data packets of interest is distributed to a plurality of applications managing VMs in the virtual datacenter, such as hosts, virtual gateways, and other virtual network applications. Each of the applications monitors data packets routed by the application by comparing the data packets to the flow pattern and selectively collecting context data describing the data packets. The context data collected by the applications is aggregated at a remote server for analysis and reporting.

Propylene homopolymerized or copolymerized catalyst and preparation method and application thereof

The invention relates to a propylene homopolymerized or copolymerized catalyst and a preparation method and application thereof. The propylene homopolymerized or copolymerized catalyst comprises the components of at least one Ti-halogen-bonded titanium compound loaded on a MgCl2.nROH adduct and at least two electron donor compounds A and B, wherein the electron donor compound A is a compound in general expression (I), and the electron donor compound B is an ester or ether compound; the mol ratio of the electron donor compound A to the electron donor compound B is 0.1-5; the mol ratio of the gross of the two electron donors to the MgCl2.nROH is 0.01-1; the mol ratio of the Ti-halogen-bonded titanium compound to the MgCl2.nROH is 1-200; and the catalyst has high activity, higher stereospecificity and good copolymerization performance, and the obtained polymer has a good form.

Blended yarn of natural colored cotton, linen, tencel and modal and production process thereof

The invention provides a semi-worsted blended yarn of natural colored cotton, linen, tencel and modal and a production process thereof. At the same time of preferentially selecting four kinds of natural fiber raw materials, blending processing is carried out by adopting a special production process, so that the problems of high blending difficulty and poor spinnability of the four kinds of natural fibers in the prior art are solved. A blended yarn product in the invention has the advantages of the four kinds of fibers of natural colored cotton, linen, tencel and modal, and the defect of single-fiber or two-fiber blending is overcome. Meanwhile, the blended yearn product provided by the invention has the excellent intrinsic color of a raw material fiber without being dyed and is difficult to fade, so that the manufacturing cost and the environmental pollution are reduced. A product knitted from the blended yarns has the advantages of environmental friendliness, salubrity, moisture-absorbing ...

Distributed photovoltaic bus-level power prediction method

The invention relates to the technical field of power systems, and discloses a distributed photovoltaic bus-level power prediction method, which comprises the following steps of: 1, calculating starting time and deadline of daily photovoltaic output; 2, classifying the users; 3, constructing a prediction model based on a long short-term memory network; and step 4, distributed roof photovoltaic day-ahead power prediction: using sunrise and sunset time to approximately replace starting time and ending time of photovoltaic output, carrying out hierarchical clustering on distributed photovoltaic users based on shape distance, constructing a prediction model based on a long-short-term memory network for each type of distributed photovoltaic users, and carrying out distributed roof photovoltaic day-ahead power prediction. Model parameters are trained, short-term power of each type of users is predicted, and prediction results of each type of distributed photovoltaic users are added. A user classification ...

Enabling byte-code based image isolation

In one embodiment, the present invention includes a method for setting an extensible policy mechanism to protect a root data structure including a page table, interpreting a bytecode of a pre-boot driver in a byte code interpreter, and controlling access to a memory location based on the extensible policy mechanism. Other embodiments are described and claimed.

Isolated high -pressure reduction voltage circuit of non -

The utility model relates to an isolated auxiliary electrical power source technical field of non - discloses an isolated high -pressure reduction voltage circuit of non -. It includes rectification filter circuit, twin crystal brake tube oscillation circuit, the ring -opening reduction voltage circuit, the closed loop reduction voltage circuit, rectification filter circuit includes high -pressure rectifier bridge U1, electric capacity C3, rectification filter circuit converts the high voltage power supply of input to the high voltage dc pressure, for the power supply of twin crystal brake tube oscillation circuit, twin crystal brake tube oscillation circuit is including controlling the multivibrator to one -tenth, the output duty cycle is 50% high pressure and square wave, drive pulse as the ring -opening reduction voltage circuit, including the buck circuit in the switch reduction voltage circuit, press the inferior high voltage dc who converts into without the steady voltage to press ...

Contactor screw fixing structure

The utility model discloses a contactor screw rod fixing structure. The contactor comprises a contactor main body and a screw rod, a mounting hole is formed in the contactor main body; a limiting groove is formed in the opening of the mounting hole, a solder ring piece is arranged in the limiting groove, a limiting step corresponding to the limiting groove is arranged on the screw, one end of thescrew penetrates through the solder ring piece to be inserted into the mounting hole, the limiting step is attached to the solder ring piece, and the solder ring piece fixedly connects the screw withthe contactor body after brazing melting. According to the structure, the screw rod and the output end of the contactor main body are mainly brazed and fixed through the molten solder ring piece, so that the fixing effect is ensured, thread loosening and thread slipping are avoided, the output end and the contactor main body originally need to be brazed in process, two parts can be brazed at the same ...

Method for querying seismic parameters in batches based on Chinese seismic oscillation parameter regionalization website

The invention relates to a method for querying seismic parameters in batches based on a Chinese seismic oscillation parameter zoning map website. According to the method, the seismic oscillation parameters can be quickly inquired in batches, the method can be widely applied to the technical facility construction industry, and the method has great reference value for projects such as natural disaster comprehensive risk general survey and highway disaster-bearing body general survey which are carried out nationwide at present.

MAGNESIUM ALKOXIDE CATALYST SUPPORT AND THE PREPARATION METHOD AND USE THEREOF

A magnesium alkoxide catalyst support and the preparation method and use thereof are provided. The method for preparing the magnesium alkoxide catalyst support comprises the following steps: mixing a metallic magnesium, a monohydric alcohol, a halogenating agent and a surfactant at 0° C. to 90° C. under an inert gas atmosphere, and then washing the resultant with an inert solvent to obtain the magnesium alkoxide catalyst support. A magnesium alkoxide catalyst support obtained by the above method is also provided, which can be used to catalyze olefin polymerization. The magnesium alkoxide catalyst support obtained by the above method according to the invention has excellent particle morphology and controllable size, and is suitable for preparing a catalyst for olefin polymerization. 1. A method for preparing a magnesium alkoxide catalyst support , characterized in that , the method comprises the following steps:mixing a metallic magnesium, a monohydric alcohol, a halogenating agent and a surfactant at 0° C. to 90° C. under an inert gas atmosphere, and then washing the resultant with an inert solvent to obtain the magnesium alkoxide catalyst support;wherein the monohydric alcohol is added in an amount of 2 mol to 50 mol, the halogenating agent is added in an amount of 0.0025 mol to 0.03 mol, and the inert organic solvent is added in an amount of 2 mol to 50 mol, based on 1 mol of the metallic magnesium;wherein the surfactant is added in a volume of from 0.01% to 10% based on the volume of the monohydric alcohol, and the surfactant is one or more selected from aliphatic esters or aromatic esters having 1 to 20 carbon atoms.2. The method for preparing a magnesium alkoxide catalyst support according to claim 1 , characterized in that claim 1 , the surfactant is one or more selected from n-butyl titanate claim 1 , tributyl phosphate claim 1 , triphenyl phosphate claim 1 , triethyl phosphite claim 1 , 1 claim 1 ,2-butanediol ditosylate claim 1 , catechol di-p-tosylate ...

All-optical frequency entangled photon source

A full-optical fiber frequency entangled photon source comprises a pulse laser, a Sagnac optical fiber ring, an optical fiber polarization controller, an optical fiber polarization splitter and an optical fiber band-pass filter. The key technical proposal of the invention lies in that quantum state transmitted opposite in the Sagnac optical fiber ring composed of a 50/.50 beam splitter, the optical fiber, the optical fiber polarization controller and an optical fiber circulator is led to meet a pattern matching condition when the 50/.50 beam splitter is coupled, thus obtaining high-purity frequency entangled photon pairs. If two output ports of the Sagnac optical fiber ring are a port 1' and a port 2' respectively, the state of the output photon is frequency entangled state |omegas>1'|omegai>2'+|omegai>1'|omegas>2', i.e. when a signal photon is output from the port 1', idle photon occurs at the port 2', and vice versa. The frequency entangled photon source is a switch-type integrated light ...

Cloud computation based remote virtualized terminal application system and application

The invention provides a cloud computation based remote virtualized terminal application system and an application. The system comprises a virtualized cloud desktop system unit, a mobile server, content push and a personal remote control terminal, and the system is connected to a cloud computation network through Ethernet so as to realize control with a home computer and synchronous exchange of remote data. According to the cloud computation based remote virtualized terminal application system and the application, a system client is adopted to access an application server resource on the internet, so that numerous natural advantages such as portability, endurance time, communication capacity and the like of a mobile phone can be sufficiently utilized, and the problem of poor storage capacity of the mobile phone can be solved.

Ultrasonic control circuit, driving method thereof and ultrasonic monitoring device

The invention provides an ultrasonic control circuit, a driving method thereof and an ultrasonic monitoring device, and relates to the technical field of ultrasonic waves, and the ultrasonic control circuit can effectively reduce and even eliminate background noise and improve the signal-to-noise ratio. The ultrasonic control circuit comprises an ultrasonic sensor which is electrically connected with a first node and is configured to be capable of receiving an echo signal of an object and writing the echo signal into the first node; and the first reset sub-circuit is electrically connected with a first reset signal line, a first control signal line and the first node, and is configured to reset the first node under the control of a first reset signal of the first reset signal line under the condition that the first reset sub-circuit is in a first state, and does not work under the condition that the first reset sub-circuit is in a second state.

Dihydric alcohol sulphonate compound, and preparation method and application thereof

The invention provides a dihydric alcohol sulphonate compound, and a preparation method and application thereof. The dihydric alcohol sulphonate compound has the following general formula I, wherein R1 and R2 are selected from linear chains and branched chains C1 to C20 alkyl groups, C3 to C20 naphthenic bases, C6 to C20 aromatic groups, C7 to C20 aralkyl groups and alkaryl, C2 to C20 alkylene, and C6 to C20 polycyclic aryl groups; R3 to R10 are selected from hydrogen and halogen atoms, linear chains and branched chains C1 to C20 alkyl groups, C3 to C20 naphthenic bases, C6 to C20 aromatic groups, C7 to C20 aralkyl groups and alkaryl, C2 to C20 alkylene, and C6 to C20 polycyclic aryl groups; R3 to R10 are not complete hydrogen and/or halogen atoms. The preparation of the dihydric alcohol sulphonate is to perform esterification on dihydric alcohol. The invention further provides application of the dihydric alcohol sulphonate to the preparation of an alkene polymerization catalyst.

Current multiplexing low noise amplifier and integrated circuit

The invention is suitable for the technical field of semiconductors, and provides a current multiplexing low-noise amplifier and an integrated circuit. The current multiplexing low noise amplifier comprises a first transistor, a second transistor, a third transistor, a first bias circuit, a second bias circuit, a current multiplexing circuit, an input matching circuit, a first interstage matching circuit, a second interstage matching circuit and an output matching circuit, the first transistor, the second transistor and the third transistor are in three-stage cascade connection; and the first bias circuit, the second bias circuit and the current multiplexing circuit are commonly used for enabling the first transistor and the second transistor to multiplex the current of the third transistor. The input matching circuit, the first biasing circuit, the second biasing circuit, the first inter-stage matching circuit and the second inter-stage matching circuit jointly achieve noise matching and ...

Map data matching method and device, equipment, medium and product

The invention provides a map data matching method and device, equipment, a medium and a product, and the method comprises the steps: reconstructing a road network between intersections in a fusion region of high-precision map data and low-precision map data; dividing a plurality of data processing scenes according to the road attribute of each road in the road network; and for each data processing scene, matching the roads in the high-precision map data in the data processing scene with the roads in the low-precision map data, and generating high-precision and low-precision map fusion data according to a matching result. On one hand, a road network between intersections is reconstructed, the difference of two data specifications on roads is weakened, and the matching efficiency of high-precision data and low-precision data is effectively improved; and on the other hand, a data hierarchical processing mode is adopted, the influence of different road attributes on matching is effectively ...

Microwave car cooling jacket

The utility model provides a microwave car cooling jacket, adopts 1060 fine aluminium manufacturings, do not welds inlet tube (1) and outlet pipe (2) in aluminium cover (5) top trompil punishment, and water -stop sheet (3) welding is in aluminium cover (5) top trompil center department, and baffle (4) welding forms the closed chamber in aluminium cover (5) one side, the water course that can flow through inlet tube (1) and outlet pipe (2) formation.

Lead dismounting and lapping tool for live working

The invention provides a lead dismounting and lapping tool for hot-line work, which comprises a tool body, a lock body, a lock body pushing piece, a spring return piece and an operating rod, and is characterized in that the tool body is provided with a placing part, the lock body is movably mounted on the tool body, the lock body pushing piece is provided with a conical part, the lock body pushing piece is in threaded connection with the tool body, and the spring return piece is connected with the operating rod. The conical part makes contact with the lock body, the spring return piece has pretightening force enabling the conical part to make contact with the lock body, and the operating rod is connected to the lock body pushing piece.

W-band mixer

The invention is suitable for the technical field of frequency mixers, and provides a W-band frequency mixer. The W-band mixer comprises a first bridge, a second bridge, a third bridge, a first field effect transistor and a second field effect transistor, the input end of the first bridge serves as the local oscillation end of the mixer and is used for receiving local oscillation signals. The straight-through end of the first bridge is connected with the grid of the first field effect transistor, and the coupling end of the first bridge is connected with the grid of the second field effect transistor; the drain electrode of the first field effect transistor is respectively connected with the straight-through end of the second bridge and the coupling end of the third bridge, and the drain electrode of the second field effect transistor is respectively connected with the coupling end of the second bridge and the straight-through end of the third bridge; the input end of the second bridge ...

CT polarity test device

The utility model provides a CT polarity test device which includes: resistance (R1), resistance (R2), resistance (RS), diode (D), relay (CJ), switch (AN1), switch (AN2), switch (AN3), single -pole double -throw (K2), switch (K1), DC power supply (EC1), DC power supply (EC2), emitting diode (LED1), emitting diode (LED2). The utility model discloses satisfying relay protection job site's actual need completely, having characteristics such as test sensitivity, convenient operation, portable, reliable practicality, can improve site work efficiency greatly, and it is directly perceived, concrete to test light indication, electronic components power consumption is few, and is with low costs, and the power consumption is low, can be used to long -time test.

Building top beam supporting device

The invention discloses a building top beam supporting device, relates to the field of building top beam supporting, solves the problems that when an existing building top beam supporting device is used, it is difficult to automatically clamp the two sides to set positions and guarantee that the bottom end of a top beam is supported in the middle position, and comprises a base, a lifting mechanism, a supporting mechanism, an adjusting mechanism and a relieving mechanism. The building top beam supporting device comprises a base, a lifting mechanism and an adjusting mechanism, a sleeve is fixedly connected to the base, a lifting rod is slidably connected into the sleeve in the vertical direction, the supporting mechanism comprises a supporting plate and two sets of clamping plates, and the adjusting mechanism comprises two sets of clamping blocks. The bottom end of the top beam is supported, meanwhile, the clamping plates are linked to synchronously clamp the two sides of the top beam, the ...

Solar power supply system applied to snow-covered plateau

The invention discloses a solar power supply system applied to a snow-covered plateau. The solar power supply system is suitable for being used in the snow-covered plateau under the severe conditions. The solar power supply system consists of a solar power supply unit and a structural bracket, wherein the solar power supply unit consists of a plurality of solar panels; the structural bracket consists of a supporting column, a plurality of horizontal supporting rods and a plurality of sleeves; the middle of each horizontal supporting rod is connected with the supporting column through the corresponding sleeve; each solar panel is arranged at each of two ends of the corresponding horizontal supporting rod. The solar power supply system can adapt to the extreme conditions of the snow-covered plateau, can normally supply power under the severe environments such as low temperature and heavy snow, can be widely applied to power supplying to scientific research equipment in a remote mains-supply-uncovered ...

OLEFIN POLYMERIZATION CATALYST AND PREPARATION METHOD AND USE THEREOF

An olefin polymerization catalyst and preparation method and use thereof are provided. The components of the catalyst comprise an active magnesium halide, a titanium compound containing at least one Ti-halide bond loaded on the active magnesium halide, and an internal electron donor selected from one or more silicon esters compounds having formula (I). The method for preparing the catalyst components is that: adding spherical magnesium chloride alcoholate particles and the electron donor into the solution of titanium compound in sequence, and processing with the titanium compound for one or more times to obtain the catalyst. The catalyst system used for the olefin polymerization comprises the catalyst components, a cocatalyst and an external electron donor. The catalyst has high activity for the propylene polymerization, and the activity is 4399 gPP/gTi·h(50° C., 1 h, slurry polymerization at atmospheric pressure), and the isotacticity of the polymer is 98%. 2. The olefin polymerization catalyst according to claim 1 , wherein the estersil compound is selected from diacyl-substituted silane claim 1 , triacyl-substituted silane or tetraacyl silane.3. The olefin polymerization catalyst according to claim 1 , wherein the estersil compound is selected from:diacetyl-(2,3-epoxy-propoxy)-methyl-silane;diacetyl-(2,3-epoxy-propoxy)-ethenyl-silane;triacetyl-(furan-2-carbonyl)-silane;triacetyl-(thiophene-2-carbonyl)-silane;dimethyl-di-(pyridine-2-acetyl)-silane;methyl-chloro-di-(pyridine-2-acetyl)-silane;dichloro-di-(pyridine-2-acetyl)-silane;tetraacetylsilane;diacetyl-dibutyl-silane;diacetyl-tert-butyloxy-n-butyloxy-silane;diacetyl-dimethyl-silane;diacetyl-methyl-ethenyl-silane;diacetyl-methyl-propenyl-silane;dimethyl-di-propanoyl-silane;diacetyl-diethyl-silane;diacetyl-ethyl-ethenyl-silane;diethyl-di-propanoyl- silane;di-isobutyryl-dimethyl-silane;di-chloracetyl-dimethyl-silane;triacetyl-methyl-silane;diacetyl-(2-chloro-ethyl)-methoxy-silane;diacetyl-butoxy-methyl-silane; ...

AUTO-DISCOVERY SERVICE AND METHOD OF DISCOVERING APPLICATIONS WITHIN A VIRTUAL NETWORK

Embodiments provide a system including a first host computing device that includes a first virtual machine (VM) and a first application. The system also includes a second host computing device including a virtualization software layer, a second VM, and an auto-discovery service at least partially instantiated within the virtualization software layer. The auto-discovery service is configured to receive a message and an auto-discovery packet from a second application executing on the second VM. The auto-discovery service inserts an option into the auto-discovery packet, and transmits the auto-discovery packet to the first application. The option in the auto-discovery packet includes the message received from the second application. 1. A system comprising:a first host computing device comprising a first virtual machine (VM) and a first application executing on the first VM; and a virtualization software layer;', 'a second VM, wherein a second application is executing within the second VM; and', receive a message from the second application;', 'receive an auto-discovery packet from the second application;', 'insert an option into the auto-discovery packet, wherein the option includes the message received from the second application; and', 'transmit the auto-discovery packet to the first application., 'an auto-discovery service at least partially instantiated within the virtualization software layer and communicatively coupled to the second VM, wherein the auto-discovery service is configured to], 'a second host computing device communicatively coupled to the first host computing device to form a network, the second host computing device comprising2. The system of claim 1 , wherein the message includes an internet protocol (IP) address of the second application.3. The system of claim 1 , wherein the auto-discovery service is further configured to register a callback function of the second application with the auto-discovery service.4. The system of claim 1 , wherein the ...

NETWORK CACHE SYSTEM FOR REDUCING REDUNDANT DATA

Embodiments include a local cache management system that is configured to be coupled to a local cache and that includes an index engine configured to store fingerprints of message segments stored in the local cache and a redundancy management engine coupled to the index engine. The redundancy management engine includes an adaptive emitter configured to receive a message segment to be transmitted to a remote device, determine expected latency costs of a plurality of transmission algorithms, and select a transmission algorithm, such as by selecting the lowest expected latency cost. The adaptive emitter is also configured to determine whether the message segment is stored within a remote cache management system associated with the remote device, and transmit the message segment through a network to the remote cache management system using the selected transmission algorithm upon a determination that the message segment is not stored within the remote cache management system. 1. A system comprising:a processor; anda memory device coupled to the processor, the memory device comprising a local cache management system that is executable by the processor and that is configured to be coupled to a local cache, wherein the local cache management system comprises:an index engine configured to store fingerprints of message segments stored in the local cache; and receive a message segment to be transmitted to a remote device;', 'determine expected latency costs of a plurality of transmission algorithms;', 'select a transmission algorithm of the plurality of transmission algorithms on a basis of the determined expected latency costs;', 'determine whether the message segment is stored within a remote cache management system associated with the remote device; and', 'transmit the message segment through a network to the remote cache management system using the selected transmission algorithm upon a determination that the message segment is not stored within the remote cache ...

FINGERPRINT IDENTIFICATION CIRCUIT AND DRIVING METHOD THEREOF, FINGERPRINT IDENTIFICATION MODULE, AND DISPLAY DEVICE

A fingerprint identification circuit and a driving method thereof, a fingerprint identification module, and a display device are provided. The fingerprint identification circuit includes a plurality of first signal receiving circuit groups, a plurality of second signal receiving circuit groups, and a plurality of first signal acquisition lines. The plurality of first signal acquisition lines are arranged in one-to-one correspondence with the plurality of first signal receiving circuit groups, and each first signal acquisition line is connected with multiple first acquisition signal input terminals of multiple signal receiving circuits in a corresponding one of the first signal receiving circuit groups. 1. A fingerprint identification circuit , comprising:a plurality of signal receiving circuits, arranged in an array along a first direction and a second direction to form a plurality of first signal receiving circuit groups arranged along the first direction and extending along the second direction and a plurality of second signal receiving circuit groups arranged along the second direction and extending along the first direction; anda plurality of first signal acquisition lines, each of the first signal acquisition lines extending along the second direction, the plurality of first signal acquisition lines arranged along the first direction,wherein each of the signal receiving circuits comprises an acquisition sub-circuit and an output sub-circuit, the acquisition sub-circuit comprises a first acquisition signal input terminal and a first acquisition signal output terminal, the output sub-circuit comprises a first read control terminal, a first data output terminal, and a data input terminal, the first acquisition signal output terminal and the data input terminal are connected to a first node, the first node is configured to be connected with a receiving electrode of an ultrasonic sensor,the plurality of first signal acquisition lines are arranged in one-to-one ...

Spiral-wound gas separation membrane element, gas separation membrane module, and gas separation apparatus

Provided are a spiral-wound gas separation membrane element, a manufacturing method therefor, a gas separation membrane module and a gas separation apparatus that include the element. The element includes a laminated body wound around a perforated central tube and including a separation membrane-flow channel member composite body. The composite body includes a gas separation membrane including a first porous layer and a hydrophilic resin composition layer. The gas separation membrane is folded with the first porous layer being located outside the hydrophilic resin composition layer. The composite body also includes a flow channel member that forms a gas flow channel, the flow channel member being sandwiched in the folded gas separation membrane. The flow channel member is provided with a first cover that covers one end portion of four end portions. The first cover is located closest to a turn-back part of the folded gas separation membrane.

DISTRIBUTED GLOBAL LOAD-BALANCING SYSTEM FOR SOFTWARE-DEFINED DATA CENTERS

The disclosure herein describes a system for providing distributed global server load balancing (GSLB) over resources across multiple data centers. The system includes a directory group comprising one or more directory nodes and a plurality of GSLB nodes registered to the directory group. A respective GSLB node is configured to provide GSLB services over a respective portion of the resources. A directory node includes a domain name system (DNS) query-receiving module configured to receive a DNS query from a client, a node-selecting module configured to select from the plurality of GSLB nodes a first GSLB node based at least on the DNS query, and a DNS query-responding module configured to respond to the DNS query to the client using an address of the selected first GSLB node, thereby facilitating the selected first GSLB node in performing GSLB while resolving the DNS query. 121-. (canceled)22. A computer-implemented method for providing domain name system (DNS) query resolution across multiple data centers while reducing a number of authoritative name servers registered at a first DNS server and reducing volume of communication between authoritative name servers , comprising: registering the directory node, second DNS server with the first DNS server as an authoritative DNS name server for a domain name;', 'receiving metadata for a plurality of third DNS servers to register the plurality of third DNS servers with the directory node, second DNS server; and', 'using the received metadata to select a particular third DNS server from among the plurality of third DNS servers to use as a DNS name server in response to a particular domain name system (DNS) query for the domain name., 'at a directory node, second DNS server,'}23. The method of claim 22 , wherein the metadata comprises one or more of:a name-server, third DNS server ID;an Internet Protocol (IP) address;a location; andone or more domain names supported by the respective third DNS server.24. The method of claim ...

Method for controlling spectral properties of optical quantum states using quantum interference in cascaded waveguide structure

The present invention discloses a method for controlling spectral properties of optical quantum states using quantum interference in cascaded waveguide structure comprises the following steps: adopting a multi-stage cascaded waveguide structure sequentially consisting of a segment of nonlinear medium, a segment of dispersive medium, . . . and a segment of nonlinear medium, or adopting a two-stage cascaded waveguide structure sequentially consisting of a segment of nonlinear medium, a segment of dispersion-controllable dispersive medium and a segment of nonlinear medium; pumping the multi-stage cascaded waveguide structure or two-stage cascaded waveguide structure by using pulsed laser to generate optical quantum states through the cascaded parametric process in the cascaded waveguide structure. The spectral property of the optical quantum state can be flexibly adjusted by changing the number of stages, the length and dispersion property of the dispersive media.

VOLTAGE REGULATION CIRCUIT

A switchable voltage regulation circuit includes a power supply chip and a voltage regulation module. The voltage regulation module includes first and second resistors and first and second switch units. A first terminal of the first resistor is electrically coupled to a power supply and a first output pin of the power supply chip. A first terminal of the second resistor is electrically coupled to the second terminal of the first resistor. The first switch unit is electrically coupled between the first terminal of the first resistor and the second terminal of the first resistor. The second switch unit is electrically coupled between the first terminal of the second resistor and the voltage output. By manual switching, or by transistors under control of a baseboard management unit, the resistances can be switched in or switched out to regulate the voltage. 1. A voltage regulation circuit comprising:a power supply chip configured to provide a reference voltage and comprising a first output pin; a first resistor having a first resistor first terminal and a first resistor second terminal, wherein the first resistor first terminal is electrically coupled to a power supply and the first output pin;', 'a second resistor having a second resistor first terminal and a second resistor second terminal, wherein the second resistor first terminal is electrically coupled to the first resistor second terminal, the second resistor second terminal is electrically coupled to ground through the capacitor;', 'a first switch unit electrically coupled between the first resistor first terminal and the first resistor second terminal; and', 'a second switch unit electrically coupled between the second resistor first terminal and the voltage output;, 'a voltage regulation module having a voltage output, which is electrically coupled to ground through a capacitor, the voltage regulation module compriseswherein in event that the first switch unit is turned on and the second switch unit is turned ...

Sensing sub-circuit, circuit, recognition method, sensor, panel and device

The present disclosure provides a fingerprint sensing sub-circuit, a fingerprint sensing circuit, a fingerprint recognition method, a sensor, a touch display panel and a display device. The fingerprint sensing sub-circuit includes an acoustic wave generation circuit and an acoustic wave reception circuit. The acoustic wave generation circuit is configured to generate an ultrasonic wave. The acoustic wave reception circuit is configured to collect a voltage signal, convert the voltage signal into a current signal, and output the current signal to a signal output end. The acoustic wave generation circuit and the acoustic wave reception circuit are separated from each other, so that the fingerprint sensing sub-circuit operates in a mode where a transmitting operation and a receiving operation are separated from each other.

Acid gas separation membrane and acid gas separation method using same, acid gas separation module, and acid gas separation apparatus

Provided is an acid gas separation membrane that includes an acid gas separation layer containing a hydrophilic resin and an acid gas carrier, a hydrophobic porous membrane layer supporting the acid gas separation layer, a porous membrane protective layer protecting the acid gas separation layer, and a first layer having a Gurley number of less than or equal to 0.5 times a Gurley number of the hydrophobic porous membrane layer and the porous membrane protective layer, the Gurley number of the first layer being greater than or equal to 0.1 s and less than or equal to 30 s. Also provided is an acid gas separation method using the acid gas separation membrane, as well as an acid gas separation module and an acid gas separation apparatus that each include the acid gas separation membrane.

Spiral-wound acid gas separation membrane element, acid gas separation membrane module, and acid gas separation apparatus

A spiral-wound acid gas separation membrane element ( 1 ) includes a wound body including a separation membrane ( 2 ), a feed-side channel component ( 3 ), and a permeate-side channel component ( 4 ) wound in a laminated state around a core tube ( 5 ). The core tube ( 5 ) has a group of holes for allowing communication between a permeate-side spatial portion defined by the permeate-side channel component ( 4 ) and a spatial portion inside the core tube ( 5 ), the group of holes being present on an end side of the core tube ( 5 ).

Display device, method for producing display device, and gesture recognition method

A display device, a method for producing a display device, and a gesture recognition method are disclosed. The display device includes a display module including a base and an array substrate, a resin layer, a first electrode layer, a pixel definition layer, a light-emitting unit layer, a second electrode layer disposed opposite to the first electrode layer, and an encapsulation layer. The light-emitting unit layer is between the first electrode layer and the second electrode layer and includes a plurality of light-emitting units respectively in a plurality of openings of the pixel definition layer, and an ultrasonic sensor including the second electrode layer, a piezoelectric material layer between the first electrode layer and the pixel definition layer, and a third electrode layer between the pixel definition layer and the resin layer. The piezoelectric material layer includes a plurality of piezoelectric material units separated by the plurality of light-emitting units.

Method of diagnosing data delivery over a network between data centers

The disclosure provides an approach for diagnosing a data plane of a network, wherein the network spans a first data center and a second data center, and wherein the second data center is remote to the first, the method comprising: accessing a secure connection between the first data center and the second data center; modifying, by the first performance controller, firewall settings of the first data center from a first setting to a second setting; opening on the second data center an instance of a performance tool; opening on the first data center a client of the instance of the performance tool; sending data packets over the data plane of the network; receiving the data packets; generating metrics associated with the data packets; and modifying firewall settings of the first data center from the second setting to the first setting.

Virtual Network Flow Monitoring

Embodiments perform end-to-end virtual network flow monitoring in a virtual datacenter and provide differentiated views to users based on user role. A target flow pattern describing data packets of interest is distributed to a plurality of applications managing VMs in the virtual datacenter, such as hosts, virtual gateways, and other virtual network applications. Each of the applications monitors data packets routed by the application by comparing the data packets to the flow pattern and selectively collecting context data describing the data packets. The context data collected by the applications is aggregated at a remote server for analysis and reporting. 1. A system for end-to-end virtual network flow monitoring in a virtual datacenter having a plurality of virtual machines (VMs) , said system comprising:a memory area associated with the virtual datacenter, said memory area storing a flow pattern including at least a source address and a destination address, the flow pattern being received from a user in a request to perform virtual network flow monitoring; and distribute the flow pattern stored in the memory area to a plurality of applications in the virtual datacenter, each of the plurality of applications managing a plurality of VMs as part of at least one virtual network;', 'aggregate, by the virtual datacenter from the plurality of applications, context data for one or more data packets routed by the plurality of applications and matching the flow pattern; and', 'determine a role associated with the user; and', 'filter, by the virtual datacenter based on the determined role, the aggregated context data for presentation to the user., 'a processor programmed to2. The system of claim 1 , wherein the plurality of applications operate as at least one of a host computing device or a virtual gateway.3. The system of claim 1 , wherein the processor is further programmed to display the aggregated context data to the user.4. The system of claim 1 , wherein the flow ...

Ultrasonic sensor, method for preparing ultrasonic sensor, and display apparatus

An ultrasonic sensor, a preparation method of the ultrasonic sensor, and a display apparatus are provided. The ultrasonic sensor includes a texture recognition region and a contrast region. The contrast region is located on at least one side of the texture recognition region. The texture recognition region includes at least one recognizing unit, and the contrast region includes at least one contrast unit. The at least one recognizing unit includes a first dielectric material layer, and the at least one contrast unit includes a second dielectric material layer. The first dielectric material layer and the second dielectric material layer are made of a same material. The first dielectric material layer exhibits piezoelectric properties. A piezoelectric strain constant of the first dielectric material layer is greater than a piezoelectric strain constant of the second dielectric material layer.

Olefin polymerization catalyst and preparation method and use thereof

Comprehensive, relevant, and dynamic data searching in a virtualization environment

A method includes indexing data and/or metadata in online virtual machines (VMs), offline VMs, virtual applications, and/or snapshots thereof on one or more host server(s) in a virtualization environment through a search architecture in the virtualization environment. The online VMs are VMs that are powered on, and the offline VMs are VMs that are powered off. The method also includes maintaining a database of the indexed data and/or metadata in the online VMs, the offline VMs, the virtual applications, and/or the snapshots thereof to enable a comprehensive search result to a search query through the search architecture. The database is associated with the search architecture.

Method and System for Secure Booting Unified Extensible Firmware Interface Executables

A method and computing device for secure booting of unified extensible firmware interface executables includes generating a platform private key, signing a third party credential, storing the signed third party credential in a database located in a trusted platform module, and executing a unified extensible firmware interface executable only if an associated signed third party credential is stored in the trusted platform module.

Thickness mode acoustic wave resonator

The invention is directed to resonators and more particularly to an MMIC-compatible resonator which can be fabricated on an MMIC chip using MMIC processing techniques. The MMIC-compatible resonator has a substrate approximately 100 microns thick made of semi-insulating GaAs and/or AlGaAs. The substrate flanks an air via on which is fabricated a thin film piezoelectric semi-insulating GaAs film, comprising the piezoelectrically active element. The piezoelectrically active element is flanked either laterally or from the top to bottom thereof by a pair of electrodes which serve to excite the thickness shear or thickness extensional mode of the thin film piezoelectrically active element. There are a number of III-V and II-VI binary compounds and ternary, and other piezoelectric semiconductor alloys, which can be used for the purposes of the invention. The thin film measures approximately 5 microns or less in thickness and is fabricated on the semi-insulating GaAs, on the 110!, 111! or 100! axis thereof.

Voltage regulation circuit

A switchable voltage regulation circuit includes a power supply chip and a voltage regulation module. The voltage regulation module includes first and second resistors and first and second switch units. A first terminal of the first resistor is electrically coupled to a power supply and a first output pin of the power supply chip. A first terminal of the second resistor is electrically coupled to the second terminal of the first resistor. The first switch unit is electrically coupled between the first terminal of the first resistor and the second terminal of the first resistor. The second switch unit is electrically coupled between the first terminal of the second resistor and the voltage output. By manual switching, or by transistors under control of a baseboard management unit, the resistances can be switched in or switched out to regulate the voltage.

Distributed global load-balancing system for software-defined data centers

The disclosure herein describes a system for providing distributed global server load balancing (GSLB) over resources across multiple data centers. The system includes a directory group comprising one or more directory nodes and a plurality of GSLB nodes registered to the directory group. A respective GSLB node is configured to provide GSLB services over a respective portion of the resources. A directory node includes a domain name system (DNS) query-receiving module configured to receive a DNS query from a client, a node-selecting module configured to select from the plurality of GSLB nodes a first GSLB node based at least on the DNS query, and a DNS query-responding module configured to respond to the DNS query to the client using an address of the selected first GSLB node, thereby facilitating the selected first GSLB node in performing GSLB while resolving the DNS query.

ESPI-Based Method and Device for Enhancing Server Security

An ESPI-based method and device for enhancing server security, including: S100, a Complex Programmable Logic Device (CPLD) monitors packet formats and instructions on an Enhanced Serial Peripheral Interface (ESPI) bus; S200, when the CPLD monitors an abnormal firmware Flash read/write operation, the CPLD records operation-related records in a Flash which is mounted to the CPLD; S300, the CPLD lights a Light-Emitting Diode (LED) corresponding to a system error signal line or a LED corresponding to a Baseboard Management Controller (BMC) error signal line; S400, the CPLD determines whether to take over a CS0 signal or not; S500, when the CPLD determines to take over the CS0 signal, the CPLD requests to interact with a Platform Controller Hub (PCH) and warns of a system security issue.

Full-polarization Faraday magnetic field sensor based on Sagnac interference system and modulation method therefor

A full-polarization Faraday magnetic field sensor based on a Sagnac interference system and a modulation method are provided. The full-polarization Faraday magnetic field sensor includes a light source, an optical fiber coupler, a polarizer, a polarization beam splitter, a polarization controller, a magnetic field sensing unit, a detector and a polarization maintaining optical fiber. An optical signal is emitted by the light source, passes through the optical fiber coupler and the polarizer in sequence, and is divided into a clockwise path and an anticlockwise path by the polarization beam splitter. Angles between fast axis directions of the two polarization maintaining optical fiber loops and a polarization direction of the polarizer are respectively clockwise 45° and anticlockwise 45°. The two polarization maintaining optical fiber loops has opposite winding directions, a same diameter, and a same number of winding turns.

Large-scale testing and simulation

The disclosure provides an approach for simulating a virtual environment. A method includes simulating, using a virtualization simulator, a plurality of hosts; simulating, using the virtualization simulator, a plurality of virtual computing instances (VCIs) associated with the plurality of simulated hosts, based on information obtained from a cluster application programming interface (API) provider; creating, using a virtualization simulator operator, one or more node simulator schedulers; creating, using the one or more node schedulers, a node simulator; simulating, using the node simulator, a plurality of guest operating systems (OSs) associated with the plurality of simulated VCIs; and joining the plurality of simulated guest OSs to one or more node clusters in a data center via an API server.

Propagating fault domain topology to nodes in a distributed container orchestration system

An example method of propagating fault domain topology information in a distributed container orchestration system includes: receiving, at control plane software executing in a data center, the fault domain topology, which includes tags for a protection group and fault domains for remote sites in communication with the data center; deploying, by a master server of the distributed container orchestration system that executes in the data center, a node pool comprising virtual machines (VMs) executing in servers of the remote sites, the VMs being nodes of the distributed container orchestration system in which containers execute; determining, by a controller of the master server, relationships among the VMs, the servers, the protection group, and the fault domains based on state of resources maintained by the master server; and providing, by the controller, labels to the servers for associating the tags of the protection group and the fault domains to the VMs.

Updating device firmwares on hosts in a distributed container orchestration system

An example method of updating device firmware in a distributed container orchestration system includes: receiving, at a master server executing in a data center, a definition for a firmware custom resource; obtaining, by an operator of the master server in response to the firmware custom resource, a firmware file set; providing, from the operator to a plurality of remote sites in communication with the data center, the firmware file set; and executing, by servers at the plurality of remote sites, updates of firmware for devices of the servers.

Coordinated upgrade workflow for remote sites of a distributed container orchestration system

An example method of upgrading remote sites of a distributed container orchestration system includes: deploying, by upgrade software executing in a data center remote from the remote sites, a second container orchestration (CO) control plane executing concurrently with a first CO control plane, the second CO control plane having a second version different than a first version of the first CO control plane, the first CO control plane initially managing all of the remote sites; upgrading, by the upgrade software, CO support software of a first portion of the remote sites; adding, by the upgrade software, the first portion of the remote sites to a second CO cluster managed by the second CO control plane; and removing, by the upgrade software, the first portion of the remote sites from a first CO cluster managed by the first CO control plane.

Automated methods and systems for simulating a radio access network

This disclosure is directed to a simulation system that verifies functionality and performance of an automated telecommunication cloud platform (“TCP”) which is used to configure hosts of cell sites and a mobile core of a 5G cellular network. The mock hosts are created with a required virtualization platform inventory of objects for implementing a 5G cellular network and registers the mock hosts with a mock centralized server management platform (“mock VC”). The mock hosts are used to simulate hosts of cell sites and a mobile core of a 5G cellular network using features of the TCP. Scale tests are used to verify functionality and performance of the TCP are performed on the mock hosts without any changes to the TCP.

Touch panel, touch recognition method and touch device

The present disclosure provides a touch panel including: a touch region having a plurality of ultrasonic signal detection circuits and a reference region having a plurality of reference circuits, each ultrasonic signal detection circuit includes an ultrasonic sensor and a first driving circuit; the ultrasonic sensor includes a first electrode, a second electrode, and a dielectric layer between the first electrode and the second electrode, the first driving circuit is configured to drive the ultrasonic sensor; each of the plurality of reference circuits includes a reference transceiver and a second driving circuit, the reference transceiver includes a third electrode, a fourth electrode, and a dielectric layer between the third electrode and the fourth electrode; the second driving circuit is configured to drive the reference transceiver; the dielectric layer of the ultrasonic sensor has piezoelectric sensitivity; the dielectric layer of the reference transceiver does not have the piezoelectric sensitivity.

Ultrasonic signal detection circuit, ultrasonic signal detection method and ultrasonic detection apparatus

The disclosure provides an ultrasonic signal detection circuit including a sensing circuit, a unidirectional conduction circuit and a source follower circuit. The sensing circuit is connected to an input terminal of the source follower circuit through the unidirectional conduction circuit; the sensing circuit is configured to generate a piezoelectric signal according to a received ultrasonic echo signal and output the piezoelectric signal to the unidirectional conduction circuit. The piezoelectric signal is an alternating current signal; the unidirectional conduction circuit is configured to rectify the alternating current signal to only allow a forward or a reverse current portion thereof to pass through. The forward/reverse current portion charges/discharges the input terminal of the source follower circuit after passing through the unidirectional conduction circuit. The source follower circuit is configured to generate a detection signal according to a voltage at its input terminal and output the detection signal through its output terminal.

Methods and apparatus for detecting lesion-induced resonances in deoxyribonucleic acid via millimeter or submillimeter wave spectroscopy

Methods and apparatus for measuring the millimeter or submillimeter wave absorption spectra in a sample of DNA molecules are provided.

Combination of serotonin and a cytokine as an early, prognostic predictor of severe dengue

The invention relates to a method of determining if a subject has developed or is at risk of developing dengue hemorrhagic fever, wherein the method includes determining a serotonin concentration and a cytokine concentration, e.g. an interferon-gamma concentration, in a biological sample obtained from the subject, and comparing the serotonin concentration and the cytokine, e.g. interferon-gamma, concentration in the biological sample with a control serotonin concentration and a control cytokine, e.g. interferon-gamma, concentration, wherein the presence of a difference of the serotonin and cytokine, e.g. interferon-gamma, concentrations in the biological sample as compared to the control serotonin and control cytokine, e.g. interferon- gamma, concentrations indicates the subject has developed or is at risk of developing dengue hemorrhagic fever.

Pluggable diagnostic tool for telco ran troubleshooting

A computer-implemented method, medium, and system for implementing a pluggable diagnostic tool for Telco radio access network (RAN) troubleshooting are disclosed. In one computer-implemented method, one or more containerized network function (CNF) instances are generated in a container orchestration platform by a test system and by using a telecommunication cloud automation (TCA) platform executed in the container orchestration platform, where the test system is onboarded to the TCA platform, and the one or more CNF instances are associated with 5G RAN. A customer resources (CR) file is received by the test system, where the CR file defines multiple test cases associated with validation of the TCA platform. The CR file is transmitted to a cluster of nodes in the container orchestration platform. The validation of the TCA platform is executed at the cluster of nodes based on the one or more CNF instances and the CR file.

Diagnosing remote sites of a distributed container orchestration system

An example method of diagnosing remote sites of a distributed container orchestration system includes: receiving, at a management cluster, definition of a test suite custom resource; detecting, by a test controller agent in a cluster of the remote sites, a diagnosis object in the management cluster created in response to the test suite custom resource; deploying, by the test controller agent in response to the diagnosis object, a first pod in the cluster; deploying, by the first pod, a second pod in a server of a first remote site of the remote sites; checking, by the second pod, configuration of the server that includes an additional pod executing alongside the second pod, at least one virtual machine (VM) in which the second pod and the additional pod execute, a hypervisor configured to support the at least one VM, and a hardware platform on which the hypervisor executes; and returning test data from the second pod to the first pod, the test data including results of the step of checking the configuration of the server.

Connection device and corresponding x-ray source

The present invention relates to a connection device of a high-voltage power supply and an X-ray tube, and a corresponding X-ray source. The connection device comprises a first connecting unit a second connecting unit, the first connecting unit is mounted on a high-voltage power supply and connects a high-voltage power output terminal of the high-voltage power supply, and the second connecting unit is mounted on an X-ray tube and connects a cathode of the X-ray tube. By mounting the first connecting unit and the second connecting unit on the high-voltage power supply and the X-ray tube, and detachably plugging said units together, the high-voltage power supply and the X-ray tube can be connected together. Moreover, the high-voltage power supply and the X-ray tube can be separated so that disassembly for repair can be carried out when any one of the high-voltage power supply and the X-ray tube is faulty.

Catalyst for propylene polymerization, catalyst system for propylene polymerization, and preparation and use thereof

The present invention relates to a catalyst for propylene polymerization, a catalyst system for propylene polymerization and preparation and use thereof. The catalyst for propylene polymerization comprises: an activated magnesium halide, a titanium compound supported on the activated magnesium halide containing at least one Ti-halogen bond, and an internal electron donor compound selected from one or more of compounds having a structure of below Formula (1), wherein R1 and R6 are each independently selected from a C1-C12 straight or branched alkyl, a C3-C15 cycloalkyl or aryl, and R′ is H, a C1-C5 straight or branched alkyl, or phenyl; R2, R3, R4, and R5 are each independently selected from H, halogen, a C1-C12 straight or branched alkyl, a C3-C8 cycloalkyl, a C6-C15 aryl, or arylalkyl. The present invention can provide a catalyst showing high polymerization reaction activity and excellent stereospecificity, by applying a novel type of internal electron donor.

Propagating fault domain topology to nodes in a distributed container orchestration system

An example method of propagating fault domain topology information in a distributed container orchestration system includes: receiving, at control plane software executing in a data center, the fault domain topology, which includes tags for a protection group and fault domains for remote sites in communication with the data center; deploying, by a master server of the distributed container orchestration system that executes in the data center, a node pool comprising virtual machines (VMs) executing in servers of the remote sites, the VMs being nodes of the distributed container orchestration system in which containers execute; determining, by a controller of the master server, relationships among the VMs, the servers, the protection group, and the fault domains based on state of resources maintained by the master server; and providing, by the controller, labels to the servers for associating the tags of the protection group and the fault domains to the VMs.

Noise-reduction multistage liquid oxygen collapse rock blasting device

A noise-reduction multistage liquid oxygen collapse rock blasting device comprises a plurality of bodies; a liquid oxygen storage cavity is arranged inside each body; one end of the liquid oxygen storage cavity is provided with a fuse; the other end of the liquid oxygen storage cavity is provided with a delay fuse; the outer side of the middle of the liquid oxygen storage cavity is sleeved with a multilayer noise-reduction device; exhaust holes are arranged in the multilayer noise-reduction device; and the plurality of bodies are connected through a connector to form a multistage structure.

Ultrasonic imaging apparatus and ultrasonic imaging method

The present disclosure provides an ultrasonic imaging method and apparatus. The apparatus includes an ultrasonic signal emission source and a receiving array including ultrasonic signal receiving circuits; the method includes: turning on the source to perform emission of ultrasonic waves toward an object to be detected and causing the ultrasonic waves to propagate through the object, a depth-wise direction of which is along a propagation direction of the ultrasonic waves; after a first predetermined time period having elapsed since the source was turned on, turning on the receiving array to receive reflected echoes returning from a first section plane of the object to be detected perpendicular to the depth-wise direction; thereafter, turning off the receiving array, storing the reflected echoes by the ultrasonic signal receiving circuits and acquiring reflected echo signals, and successively reading the reflected echo signals from the ultrasonic signal receiving circuits during a reading time period.

Diagnosing remote sites of a distributed container orchestration system

An example method of diagnosing remote sites of a distributed container orchestration system includes: receiving, at a management cluster, definition of a test suite custom resource; deploying, in response to the test suite custom resource, a first pod in the management cluster; deploying, by the first pod, a second pod in a server of a first remote site of the remote sites; checking, by the second pod, configuration of the server that includes an additional pod executing alongside the second pod, at least one virtual machine (VM) in which the second pod and the additional pod execute, a hypervisor configured to support the at least one VM, and a hardware platform on which the hypervisor executes; and returning test data from the second pod to the first pod, the test data including results of the step of checking the configuration of the server.

Sofa unfolding device

The present application relates to a sofa unfolding device capable of avoiding forward overturning, including a seat, a backrest assembly, a linkage assembly, and a leg rest assembly, wherein the linkage assembly is rotatably connected on the seat, the backrest assembly is rotatably connected to a rear end of the seat via the linkage assembly, the leg rest assembly is rotatably connected to a front end of the seat via the linkage assembly, a support mechanism is connected on the front end of the seat and comprises an abutting member and a support member, the abutting member is rotatably connected with the linkage assembly via a first pivot, and the support member is rotatably connected with the abutting assembly via a second pivot and is rotatably connected with the seat via a third pivot.

Connection device and corresponding x-ray source

Touch panel, touch recognition method and touch device

The present disclosure provides a touch panel including: a touch region having a plurality of ultrasonic signal detection circuits and a reference region having a plurality of reference circuits, each ultrasonic signal detection circuit includes an ultrasonic sensor and a first driving circuit; the ultrasonic sensor includes a first electrode, a second electrode, and a dielectric layer between the first electrode and the second electrode, the first driving circuit is configured to drive the ultrasonic sensor; each of the plurality of reference circuits includes a reference transceiver and a second driving circuit, the reference transceiver includes a third electrode, a fourth electrode, and a dielectric layer between the third electrode and the fourth electrode; the second driving circuit is configured to drive the reference transceiver; the dielectric layer of the ultrasonic sensor has piezoelectric sensitivity; the dielectric layer of the reference transceiver does not have the piezoelectric sensitivity.

スパイラル型ガス分離膜エレメント、ガス分離膜モジュール、及びガス分離装置

【課題】分離効率の低下を抑制することが可能なスパイラル型ガス分離膜エレメント及びその製造方法、並びに該スパイラル型ガス分離膜エレメントを含むガス分離膜モジュール及びガス分離装置を提供する。【解決手段】有孔の中心管に巻回され、分離膜−流路部材複合体を含む積層体を有し、分離膜−流路部材複合体は、第１多孔層及び親水性樹脂組成物層を含み、第１多孔層を親水性樹脂組成物層よりも外側にして二つ折りにされているガス分離膜と、それに挟まれているガス流路を形成する流路部材とを含み、流路部材は四つの端部のうち、一つの端部を覆う第１カバー部を備え、第１カバー部は二つ折りにされたガス分離膜の折り曲げ部に最も近く配置されているスパイラル型ガス分離膜エレメント及びその製造方法、並びに該ガス分離膜エレメントを含むガス分離膜モジュール及びガス分離装置が提供される。【選択図】図５

Cluster add-on lifecycle management

Example methods and systems for cluster add-on lifecycle management are described. In one example, a computer system may obtain cluster add-on definition information specifying multiple add-ons that are each capable of extending functionality of at least a first cluster and a second cluster. In response to receiving a first instruction to perform a first management action, a first validation operation may be performed based on the cluster add-on definition information and multiple first configuration values associated the multiple first configuration fields. In response to receiving a second instruction to perform a second management action associated with the second add-on, a second validation operation may be performed based on the cluster add-on definition information and multiple second configuration values associated the multiple second configuration fields. The first/second management action may be performed in response to determination that the first/second validation operation is successful.

Cluster add-on lifecycle management

Example methods and systems for cluster add-on lifecycle management are described. In one example, a computer system may obtain cluster add-on definition information specifying multiple add-ons that are each capable of extending functionality of at least a first cluster and a second cluster. User interface(s) may be generated based on the cluster add-on definition information to allow a user to request for a management action associated. In response to receiving a first request for a first management action associated with the first add-on, a first instruction may be generated and sent to cause the first management action to be performed in the first cluster. In response to receiving a second request for a second management action associated with the second add-on, a second instruction may be generated and sent to cause the second management action to be performed in the first cluster or the second cluster.

Diagnosing and auto-remediating remote sites of a distributed container orchestration system via an extensible diagnosis case framework

The disclosure provides a method for diagnosing remote sites of a distributed container orchestration system. The method generally includes receiving a test suite custom resource defining an image to be used for a diagnosis of components of a workload cluster deployed at the remote sites, wherein the image comprises a diagnosis module and/or a user-provided plugin to be used for the diagnosis; identifying a failed component in the workload cluster; obtaining infrastructure information about the workload cluster; identifying the components of the workload cluster for diagnosis based on the failed component, the infrastructure information, and the test suite custom resource; identifying at least one diagnosis site of the remote sites where the components are running using the infrastructure information; and deploying a first pod at the at least one diagnosis site to execute the diagnosis of the one or more components.

Self-adaptive simulation system configured to support large scale remote site upgrades of a distributed container orchestration system

The disclosure provides a method for preparing a simulation system to simulate upgrade operations for a distributed container orchestration system. The method generally includes monitoring, by a simulation operator of the simulation system, for new resources generated at a management cluster in the distributed container orchestration system, based on the monitoring, discovering, by the simulation operator, a new resource generated at the management cluster specifying a version of container orchestration software supported and made available by the management cluster, and triggering, by the simulation operator, a creation of a new mock virtual machine (VM) template in the simulation system specifying the version of the container orchestration software, wherein the simulation system is configured to use the new mock VM template for simulating mock VMs in the simulation system that are compatible with the version of the container orchestration software supported and made available by the management cluster.

Distributed global load-balancing system for software-defined data centers

The disclosure herein describes a system for providing distributed global server load balancing (GSLB) over resources across multiple data centers. The system includes a directory group comprising one or more directory nodes and a plurality of GSLB nodes registered to the directory group. A respective GSLB node is configured to provide GSLB services over a respective portion of the resources. A directory node includes a domain name system (DNS) query-receiving module configured to receive a DNS query from a client, a node-selecting module configured to select from the plurality of GSLB nodes a first GSLB node based at least on the DNS query, and a DNS query-responding module configured to respond to the DNS query to the client using an address of the selected first GSLB node, thereby facilitating the selected first GSLB node in performing GSLB while resolving the DNS query.