92results about How to "Meeting Research Needs" patented technology

The invention provides a method for preserving the activity of a human cell membrane blood group antigen, which comprises the steps of: preparing an erythrocyte membrane blood group antigen extract, and then coating the prepared erythrocyte membrane blood group antigen on a solid microsphere so as to replace a fresh erythrocyte to be used for detecting a blood group antibody in a sample.

The invention discloses a wireless sensor network (WSN) emulation system. The emulation system comprises a user interface, a bottom module library, a node member library, an emulation environment scene library, a running object library, a parameter configuration library, a node composition relation library, a service database, a packet information library, a packet head information library, a module registering unit, a module selecting unit, a module assembling unit, a parameter setting unit, a topology data generating unit, a service scheduling unit, a display unit and a result statistic unit. Aiming at the characteristics that the WSN takes data as the center and is application-oriented, the system emulates the communication protocols in the WSN environment and multiple kinds of application based on the WSN and can undergo modular extension as required. The system can synchronously count the energy consumption of each sensor node through an energy model thereof during the WSN emulation test so as to objectively and actually provide reference technical indexes for research schemes.

The invention discloses an underwater gas phase pipeline leakage and diffusion experiment device. The experiment device comprises a power module, an experiment module and a detection and experiment data processing module; the power module comprises an air compressor, a gas buffer tank, a pressure gauge, a pressure stabilization electromagnetic valve and a gas delivery hose; the experiment module comprises three parts, namely, an underwater gas phase leakage rate experiment pipeline, a control experiment pipeline and an underwater gas phase diffusion experiment pipeline; and the detection and experiment data processing module comprises two turbine flow sensors, two pressure gauges, three high-speed cameras and a PLC module. According to the device, the research requirements of the underwater gas phase pipeline leakage and diffusion mechanism aspect under laboratory conditions can be met, the device is used for the underwater gas pipeline leakage quantity evaluation and the research of the gas diffusion process under the water environment and the water surface inrush current effect, a verification way is provided for numerical simulation, the reliability of the underwater medium leakage diffusion mechanism and consequence evaluation is improved, and a scientific theoretical basis is provided for pipeline leakage monitoring and risk assessment and accident emergency; and the experiment process is simple and easy to operate, and the problems that a traditional laboratory large-scale similarity experiment research is little, and testing is inconvenient and is not accurate are solved.

The invention discloses a motor vehicle fuel consumption emission intensity calculating method based on traffic jam evaluation index. The method comprises the following steps: 1) data acquisition and processing; 2) data clustering analysis; and 3) model establishing.

The invention provides a data source generating method for passive direction finding location. The method aims at high cost of satellite passive direction finding location, is based on the theory of passive direction finding location, and includes initial setup, earth satellite kinematics environment recursion, observation data generation and other links. The invention has the characteristics of flexible parameter setting, high computing speed, and high accuracy of output observed quantity. Practical engineering problems in the process of on-satellite location algorithm design, namely, difficult calibration and low calibration efficiency, are solved. A large number of reliable data sources can be provided for location algorithm verification. A location result obtained by the method can be used as the basis for checking the accuracy of a direction finding location algorithm.

The invention provides a method for efficiently expressing a DNA polymerase by using pichia pastoris, which comprises the following steps of: 1) cloning the DNA polymerase gene to a pichia pastoris secretion type expression vector to obtain pichia pastoris recombinant expression plasmid; 2) converting the recombinant expression plasmid into pichia pastoris host cell GS115 by electric shock, and identifying and screening a positive clone through an MD panel and a PCR; and 3) performing induction expression on the selected positive clone by using 0.5 percent methanol. The method can be used for expressing the DNA polymerase gene. Through verification, compared with an Escherichia coli expression system, the method can improve the performance such as the heat stability and the like of the DNA polymerase obviously, reduce the production cost, shorten the process flow and simplify purifying steps.

The invention discloses a method for synthesizing high-activity Ni-Mo-Co hydrogen evolution catalyst under the acid environment. The method comprises the following steps: (1) preparing catalyst electroplating liquid; (2) cleaning a substrate; (3) preparing template electrolyte; (4) manufacturing a template; (5) reprocessing the catalyst electroplating liquid; (6) depositing a catalyst. The methodhas the advantages of low cost, simpleness in operation and short period, and the prepared hydrogen evolution catalyst can remarkably reduce hydrogen evolution overpotential and can more remarkably reduce the hydrogen evolution overpotential under the acid environment.

The invention discloses a micro-nano mechanical testing experimental platform and method for precision cutting. The experimental platform comprises a three-axis ultraprecise machine tool, a three-direction micro table, a three-direction dynamometer, a laser displacement sensor, a high speed camera and a thermal imager. The three-direction micro table is mounted on a three-direction dynamometer, the three-direction dynamometer is fixed to a worktable of the three-axis ultraprecise machine tool, and the laser displacement sensor, the high speed camera and the thermal imager focus on a cutting position. A cutting surface forming process, cutting deformation breakage, a cutting force, a cutting temperature, a cutting depth, cutting vibration and the like in a cutting experimental process can be observed and measured. The micro-nano mechanical testing experimental platform and method for precision cutting can provide platform and method support for researching a material removal mechanism,a high quality cutting surface forming mechanism, a cutting deformation breaking rule and the like.

The invention relates to the technical field of directional solidification, in particular to a multi-mode excitation deep supercooling directional solidification device and method. The multi-mode excitation deep supercooling directional solidification device comprises a reaction furnace, a smelting device, a feeding device, an excitation device, a drawing rod and a drawing device, wherein the feeding device is used for adding a purifying agent into a crucible in a hot melting process, the excitation device comprises an excitation chamber capable of being filled with liquid metal, a water cooling ring layer and a liquid level controller communicating with the excitation chamber, the liquid level controller is used for controlling the liquid level of the liquid metal in the excitation chamber, and the drawing device is capable of pulling at least a portion of the crucible into the excitation chamber at a predetermined speed range by means of the drawing rod. According to the directionalsolidification device, deep supercooling of melt is achieved through a method of combining glass purification and circulating superheating, moreover, smelting, liquid metal/water dual cooling and thedrawing device are ingeniously combined, different modes can be selected to stimulate directional solidification of the deep supercooled melt, and therefore deep supercooled directional solidificationcastings with different structures and performance characteristics can be obtained, and more research and application requirements are met.

The invention discloses an intelligent ballast, which comprises a case, wherein a space for placing a moving detection instrument is arranged in the case, a moving detection instrument used for detecting moving signals and sending the moving signals to a signal receiving device is placed in the space for placing the moving detection instrument, and a layer of stress film is pasted on the surface of the case. The intelligent ballast has the advantages that the structure is reasonable, the appearance is the same as that of an ordinary intelligent ballast, and the intelligent ballast can be enabled to realize the same moving characteristics as other ballasts; the collected data can almost meet all practice and research requirements; the manufacturing is simple and economic, a 3D (three-dimensional) printer can be utilized for realizing the large-scale manufacturing, the wireless communication can realize the matching with an intelligent mobile phone, and the convenience degree of data transmission and collection is greatly improved, so the efficiency is greatly improved.

The invention discloses a jade nondestructive detection sample model and a manufacturing method thereof. The sample model comprises a jade model plate, wherein a smooth planar area, a bucket-shaped thinned area, a concave thinned area, a concave gold film area, a concave carbon film area, a cylindrical thinned area, a penetrability varying area, a light dispersion prism area, a raw material remain area, a cutting remain area, a color vector area, a special lighting area and a marking area are arranged on the jade model plate. The manufacturing method of the sample model comprises the following steps: A. selecting materials; B. cutting; C. polishing; D. carving; E. polishing; F. labeling an ingredient labeling area, a name labeling area, a lattice labeling area and a color vector area depending on a detection result; G. finishing manufacturing of the sample model, and packaging. The sample model disclosed by the invention fills the blank that the fields of domestic and international jade detection and identification teaching and research fail to acquire 15 specified national standard data and conclusions rapidly on the premises of not dividing a sample and not changing state of the sample detected.

The invention relates to a fragrance generating and enriching device, which comprises a reaction structure, a reaction condition regulating structure and a fragrance enriching structure, wherein the reaction structure comprises a reaction kettle body and a kettle cover; the reaction kettle body is provided with an opening at the upper end; the kettle cover is used for sealing the opening formed in the upper end of the reaction kettle body; a stirring element is arranged in the reaction kettle body; the reaction condition regulating structure comprises a gas regulating structure, a pH value regulating structure and a reaction temperature regulating structure; the gas regulation structure is used for regulating the oxygen concentration in the reaction kettle body; the pH value regulating structure is used for regulating the pH value in the reaction kettle body; the reaction temperature regulating structure is used for regulating the reaction temperature in the reaction kettle body; the fragrance enriching structure is used for enriching the fragrance generated by reaction; meanwhile, un-enriched gas returns into the reaction kettle body. The fragrance generating and enriching device has the advantages that the structure is simple; the cost is low; the operation is flexible; the use is convenient and reliable; the popularization is easy.

The invention discloses a high precision tree DBH (diameter at breast height) measurer, mainly comprising a fixing clamp, a measuring component and a processing circuit. Two symmetrical L-shaped aluminum sections in the fixing clamp are located on a same plane; a long pawl capacitive grating digital display caliper body and a support bar are fixed to two ends of the aluminum sections; four right angle positioning connecting pieces are installed at the ends of the capacitive grating digital display caliper body and the support bar to form a rectangular support. The center of one of the two L-shaped aluminum sections is grooved to cooperate with a rectangular rope, and is fixed by screws; an elastic fixing rope penetrates the rectangular rope and is fastened to a trunk. A U-shaped support is fixed to the center of the other L-shaped aluminum section; two rubber fixing blocks are fixed to two end faces of the U-shaped support through claw screws; a sensor support is installed at the center of the L-shaped aluminum section and is used for fixing an inductive displacement transducer. The high precision tree DBH measurer has the characteristics of high measuring resolution, and micrometer magnitude precision; meanwhile tree DBH static measurement and dynamic measurement are combined, thereby reducing measuring errors.

The invention relates to a high speed dust storm saltation test observation system, characterized in that a pressure regulating valve, an electromagnetic switch valve, a time control switch, a sand blasting gun and a sand supply device are commonly fixed on a work panel; a power device is successively in connection with the pressure regulating valve, the electromagnetic switch valve and the sand blasting gun through a flexible pipe; the time control switch is in connection with a power supply, and is respectively in connection with the power supply and the electromagnetic switch valve through leads; the sand port of the sand supply device is in connection with the sand supply device; a test platform is located between a saltation dust collector and the sand blasting gun. The system can simulate continuously adjustable stable wind conditions with a wind speed greater than 150 m/s, and accurately control wind speed and effect time, and has the characteristics of convenient operation, easy control, portable equipment, simple disassembly and convenient transfer; the system is suitable for test observation such as dust storm saltation observation, wind speed wind pressure, wind erosion and polishing, sediment transport, etc. under heavy wind conditions, and microscopic research such as particle speed, concentration, etc., and provides basic test equipment for dust storm motion rules and process research under special conditions.

The invention discloses a salinized soil sampling device based on remote sensing and a sampling method thereof. The salinized soil sampling device comprises a vehicle body, four storage batteries arefixedly connected to the inner side wall of the vehicle body, a signal transceiver is fixedly connected to the inner side wall of the vehicle body, two servo motors are symmetrically and fixedly connected to the inner side wall of the vehicle body, the output shafts of the servo motors are fixedly connected with inducers, eight loading wheels are symmetrically hinged to the two side faces of the vehicle body, and the outer surfaces of the inducers and the loading wheels are meshed with track shoes. Remote sensing is provided for all electrical elements through the signal transceiver, a cameraand a laser range finder are matched with a GPS positioner to feed back real-time driving data to background workers, meanwhile a second motor, a third motor and a fourth motor are matched with a first mechanical arm, a second mechanical arm and a fixing support to drive sampling mechanisms such as an electric push rod and a drill rod to conduct soil drilling and sampling, in the period, a workercan remotely control the motors through the background to meet the requirement for sampling at different angles and depths, and the research requirements are met.

The invention discloses a modular hydrogen burning explosion experiment research system with a circulation loop and a method. The system comprises a cylindrical test body and a data measurement subsystem, wherein the test body comprises a plurality of modular pressure-bearing cylinders, and the modular pressure-bearing cylinders are sequentially connected in series and communicated; a plurality ofmeasuring points are arranged in each modular pressure-bearing cylinder, and each measuring point is electrically connected with the data measuring subsystem; an ignition device is arranged at one end in the test body; a plurality of annular pore plate turbulent flow arrays are arranged in each modular pressure-bearing cylinder; the device further comprises a gas injection subsystem, a vacuumizing subsystem and a gas circulation subsystem, the gas injection subsystem is communicated with one side of the test body, and the other side of the test body is communicated with the vacuumizing subsystem; and the gas circulation subsystem is communicated with the test body to form a gas closed circulation loop. The system has the characteristics of modular design characteristics, simple assembly and high flame combustion speed measurement precision.

The invention discloses an aerospace model flight test layout, and an axisymmetric nose cone area configuration and a design method thereof. A mature axisymmetric boosting aircraft is used as a flighttest platform, the appearance of an axisymmetric nose cone area of the aircraft is partially replaced and redesigned, and the structure, control, power and other hardware systems of the flight test platform are kept consistent with those of an original aircraft; the appearance of the replaced local head cone is in a longitudinal body axis alternating symmetrical configuration, and the replaced local head cone is divided into four sections from the head to the tail. The first section is of a ball head cone structure, the second section is of a circular section-to-regular polygon section structure, the third section is of a regular polygon skirt structure, the fourth section is of a regular polygon section-to-circular section structure, the first section of ball head cone structure is usedfor related material assessment flight tests, the third section is of a related flow research measurement test section, and the second section and the fourth section are corresponding transition connection sections. The aerospace model flight test makes full use of the existing mature technology, the design cost can be greatly saved, and the design period is shortened.

The invention relates to the technical field of research and development of seismic fault motion simulation test instruments, in particular to a fault motion simulation matching type box body structure and a seismic fault simulation test platform. The fault motion simulation matching type box body structure comprises a left box body and a right box body which are arranged in a left-right matching mode, and an inner cavity of the left box body and an inner cavity of the right box body are communicated and form a containing cavity for containing a soil layer; each of the left box body and the right box body comprises a main box body, openings are formed in the two sides in the left-right direction, and an opening is formed in the top side; and an end cover. According to the device, the at least two transverse battens which are sequentially arranged in the vertical direction form the plugging component, and the plugging component is assembled between the two adjacent vertical supporting frames which are arranged at intervals in the left-right direction, so that the main box body with proper length and height can be formed by selecting a proper number of transverse battens and a proper number of vertical supporting frames; and the research requirements of to-be-tested models with different sizes are met.

The invention discloses an automated hybrid simulation system for a distributed distribution network based on RTDS, and the system comprises a transient simulation subsystem, a steady state simulation subsystem, and a power distribution automated main station which is connected with the transient simulation subsystem and the steady state simulation subsystem. The transient simulation subsystem comprises an RTDS simulator which is used for simulating a real power distribution network, and a first power distribution terminal which is connected with the RTDS simulator. Therefore, according to the scheme of the invention, the RTDS simulator is used for building the transient simulation subsystem, and the steady state simulation subsystem is built through a steady state simulation subsystem of an intelligent power distribution network or the real power distribution network and a second power distribution terminal. The two subsystems and the power distribution automated main station jointly form the complete automated hybrid simulation system. The automated hybrid simulation system supports steady state simulation and transient simulation, also can meet the research demands of a distributed power distribution network automation system to a great extent, reduces the search cost of the distributed power distribution network automation system, and reduces the consumption time.

The invention relates to a method for analyzing short-term temperature fluctuation, which comprises the following steps of: collecting a multi-year day-by-day temperature sequence of a certain place,respectively calculating the temperature difference between the daily temperature and the first day in the time length by taking data in the length of a research time period to form a difference group, and forming a plurality of difference sequences on the basis of data of the multi-year corresponding difference group, sorting the difference value sequences according to the size, and calculating upper and lower thresholds; and judging the size relation between the corresponding difference value group every day and the upper and lower thresholds of the corresponding difference value sequence, so that whether air temperature fluctuation occurs in the length of the research time period can be judged. According to the method, the length of the research time period and the threshold proportionof fluctuation can be freely defined, the influence of seasonal change on temperature fluctuation is eliminated, the day-by-day temperature fluctuation amplitude and the fluctuation frequency in the time period can be obtained, and the fluctuation direction can be indicated by the positive and negative of the fluctuation amplitude index.

The invention discloses gold phosphide nanosheets as well as a controllable preparation method and application thereof. The preparation method comprises the following steps: putting a phosphorus source serving as a phosphorus-containing precursor and a mineralizer into a first region of a reaction chamber; arranging substrates provided with gold films in a stacked mode and placing the substrates in a second area of the reaction chamber, with the working temperature of the first area being 10-100 DEG C higher than that of the second area; and heating the reaction chamber to gasify the phosphorus source and the mineralizer to generate phosphorus-containing gas, evaporating gold on the surface of the substrates and forming nucleation points on the substrates, cooling, and reacting the phosphorus-containing gas with the gold under the induction of the nucleation points to epitaxially grow to form the gold phosphide nanosheets. The chemical vapor transport method adopted by the invention issimple and safe to operate, high in controllability and strong in repeatability, and the prepared gold phosphide nanosheets have the advantages of high yield, high purity, low surface roughness, uniform thickness, controllable morphology and the like, and can be widely applied to the fields of catalysis, semiconductor devices and the like.

The invention relates to a mouse operation and optical imaging experiment device. The mouse operation and optical imaging experiment device comprises an operation table, a fixing part, a nose mask, an eye mask, a scalp spreader and a caudal vein injection auxiliary device, wherein the operation table is used for placing a mouse; the fixing part is used for accommodating four limbs and the tail of the mouse and realizing flexible fixation of the mouse together with the operation table; the nose mask is used for gas anesthesia of the mouse; the eye mask is used for protecting eyes of the mouse and can be used independently; the scalp spreader is used for fully exposing the brain operation view of the mouse; and the caudal vein injection auxiliary device is connected with the operation table and used for assisting puncture and injection of the caudal vein of the mouse. By means of the mouse operation and optical imaging experiment device, mouse fixation, anesthesia, caudal vein puncture administration and other experiment operations including operation and imaging can be uniformly and smoothly completed on the device, good eye protection and body temperature maintenance can be provided for the mouse, so that the experiment operations are facilitated, the experiment success rate is increased, the research range is expanded, the experiment cost is saved, and animal welfare is fully enhanced.