74 results about "Experimental work" patented technology

Recent experimental work with currently available adsorbents indicates that operating the adsorption section at lower temperatures improves the para-xylene productivity. As a result, an aromatics complex and heat recovery network for a low temperature adsorptive separation-isomerization loop is disclosed resulting in adsorbents savings in combination with higher capacity thereby enabling smaller adsorbents chambers, a smaller total heat exchanger area and a lower heat exchanger shell count.

The present invention relates to a method and apparatus for predicting the non-color properties of a chemical mixture, such as an automotive paint, using an artificial neural network. The neural network includes an input layer having nodes for receiving input data related to the chemical components of the mixture and environmental and process conditions that can affect the properties of the mixture. An output layer having nodes generate output data which predict the properties of the chemical mixture as a result of variation of the input data. A hidden layer having nodes is connected to the nodes in the input and output layers. Weighted connections connect the nodes of the input, hidden and output layers and threshold weights are applied to the hidden and output layer nodes. The connection and threshold weights have values to calculate the relationship between input data and output data. The data to the input layer and the data to the output layer are interrelated through the neural network's nonlinear relationship. When implemented, accurate predictions of the final properties of the mixture can be obtained. The invention is especially useful in relating automotive paint formulation variables (e.g., paint ingredient amounts and application process conditions) to physical properties (e.g., viscosity, sag), appearance (e.g., hiding, gloss, distinctness of image) or other measured properties enabling comparison of formula properties to target values or tolerances without expensive experimental work.

The invention provides a sintering ore burdening method. The method comprises the following steps of: calculating a liquid phase quantity and temperature relationship of a sintering burdening scheme by adopting thermodynamic calculation software Factsage, determining an undetermined scheme according to the liquid phase quantity and temperature relationship, then obtaining a melting shrinkage rate and temperature relationship of the undetermined scheme through a melting characteristic test experiment, and finally judging whether the undetermined scheme belongs to a reasonable scheme according to an initial melting temperature of the undetermined scheme and the fit degree of the liquid phase quantity and temperature relationship and the melting shrinkage rate and temperature relationship. The method of the invention greatly reduces the experiment workload and the labor intensity, overcomes the defect of burdening sintering ores simply by means of subjective experience, can intuitively and accurately reflect the liquid phase generating property of a sintering process, and has small experimental error and good experimental reproducibility compared with a traditional sintering cup experiment; and a sintering burdening scheme obtained by judging the data fit error is suitable for guiding the practical production.

The invention discloses a clutch testing device and a testing method. The testing device comprises a first rack body supported on a support box and a main transmission shaft on the second rack body, a first housing, an assembly fixing mechanism, a separation air cylinder system, a driving device and a transmission system; the first housing is arranged on the outside of the first rack body and is coaxial with the main transmission shaft; the assembly fixing mechanism is arranged inside the first housing and is installed on one end of the main transmission shaft for fixing the clutch cover assembly; the separation air cylinder system is connected to the first housing and is used for installing a release bearing; the drive device is used for providing power; and the transmission system is connected to the drive device and the other end of the main transmission shaft. The clutch testing device disclosed by the invention can be used for finishing the duration test of the separation bearing of the clutch, the friction coefficient test and the torsion damper fatigue life test under various installation states, saves the test space, reduces the test cost and improves the test working efficiency.

The invention discloses a visualized experimental system and method for mixing process of two layers of fluids and heat transfer characteristics under ocean conditions. The system comprises a visualized experimental section, an ocean motion platform for simulating ocean motion conditions, a high-speed camera for photographing the mixing process of two layers of fluids, a high-level liquid storagetank for storing an experimental working medium, a waste liquid tank connected with the visualized experimental section, a cooling water circuit, power distribution equipment, instrument control equipment and data measuring and collecting equipment. During the experiment, the experimental working medium is injected to the visualized experimental section, the ocean motion platform drives the visualized experimental section to realize motions such as undulation, sway and the like; and the water in the cooling water tank is driven by a centrifugal water pump to flow through a cooling passage in the visualized experimental section so as to provide a cooling boundary for the visualized experimental section, and the heated cooling water returns to the initial temperature through a plate heat exchanger and a cooling tower return and then is returned to the cooling water tank. The system and method are capable of obtaining the mixing process and heat transfer characteristics of two layers of molten pools after serious accidents of reactors under the ocean conditions, and can be used for safe design of reactors under the ocean condition.

The invention belongs to the object high speed water entry experiment field and especially relates to an object multi-angle high-speed water entry experiment device controlled by a high-pressure gas.In the invention, a same set of device satisfies needs of a plurality of experimental work conditions, the highest water entry speed of an object can be 600m/s, and a water entry angle is 0 to 90 degrees. An emission-object bullet holding device is adopted to clamp an emission object, the emission objects with multiple sizes and shapes can be satisfied, and a bullet holding collector and a deflation device are added at a barrel end of an emission device so as to avoid an influence of the high-pressure gas on a water entry moment of the object. An acceleration sensor is installed in the emission object so as to record an acceleration change process of the object during a water entry process. An array light source makes a water entry process shot by a high-speed camera be clearer so as to satisfy high-precision experiments under different working conditions, and good operability and repeatability are possessed. A manual deflation device is installed on a high pressure gas tank so that manual deflation can be performed, which is safe and reliable. A device structure is compact and flexible and an integral occupied space is small.

The invention relates to a point laser displacement sensor, in particular to an experimental method and an experimental device for calibrating measuring errors of a point laser displacement sensor. The experimental method comprises a laser interferometer, an optical path assembly, a six-degree-of-freedom fixing frame, the point laser displacement sensor, a sine bar, an index plate, a standard gauge block and a numerical control machining center. The experimental method constructs mathematical models of an incident tilt angle, an incident turning angle and an incident swinging angle when the point laser displacement sensor measures an object surface, derives a relationship among the three angles, and provides a theoretical support for error calibration of the point laser displacement sensor. The error calibration experimental device is established based on the mathematical models, the experimental device is simple in operation and highly targeted, can greatly simplify the experimental workload, performs error analysis on the experimental result, obtains influence rules of the three measuring factors of the incident tilt angle, the incident turning angle and the incident swinging angle on the measuring errors, and provides guarantee for the workpiece non-contact, rapid and precise detection technology based on the point laser displacement sensor.

The invention provides a device and method used for measuring end face turning temperature and belongs to the technical field of machining. The device and method are suitable for measuring temperature of a turning area during end face turning. The device comprises a thermocouple sensor, a slip ring and an experimental work piece which is specially designed, wherein the experimental work piece is a material product with turning temperature to be measured, annular ribs designed on the experimental work piece can convert end face turning into cylindrical turning, the thermocouple sensor can be reasonably buried in the work piece by designing a through hole and a blind hole, and safety of a turning process and signal stability are improved. Meanwhile, interference among devices is eliminated by the slip ring structure, temperature signals can be collected by a data collecting card through the slip ring and transmitted to a computer, and finally, more accurate end face turning temperature can be obtained. The device disclosed by the invention has a simple structure and is convenient to operate, and good measurement device and method can be used for achieving accurate measurement of end face turning temperature.

Amyotrophic lateral sclerosis (ALS) is a devastating disease that leads initially to death of motor nerves with some progression to death of sensory and autonomic nerves. Experimental work shows that more electrical energy is required to successfully stimulate motor vs. sensory nerve components of a nerve and longer vs. shorter components of a nerve. This discovery explains sparing of the nerves of ocular motion and nerves of rectal and urethral sphincters in patients suffering from ALS and supports the energy hypothesis of ALS. Neurons and peripheral nerves are dependent upon glial cells and oligodendrocytes respectively to support their high energy demands. These supporting cells shuttle lactate to neurons and nerves. Lactate is required to sustain contraction of skeletal muscle. Administration of racemic or L-lactate in an amount greater than the capacity of the liver to oxidize will increase the available lactate to nerves and neurons and improve the symptoms of ALS.

The invention relates to a PCR detection-oriented linear microfluidic DNA extraction system. The system comprises a corrosion-resistant alloy material structure, an injection piston, a stepper motor, a liquid waste microchannel and a screw, wherein a slide block is arranged on the screw; the slide block is a reaction cavity; biological nanometer magnetic beads are arranged at the center of the slide block. The linear reaction structure is adopted, mixing of reagents caused by repeated work is avoided, the final purity and the concentration of DNA are improved, the reaction is smoother and faster, and one-time bulking of the reagent is facilitated. A single chip microprocessor integrated control system can be adopted, excessive peripheral equipment is reduced, the system is more miniaturized, and the function is integrated, so that the stepper motor and the injection piston finish power work of the system in common, and the experimental work efficiency is improved.

The invention discloses a method for collecting and culturing ulva spores, which comprises the following steps: placing mature ulva segments on a glass slide, dropwise adding seawater, irradiating with light with the illumination intensity of 3,500-4,200Lx to stimulate the ulva segments, collecting spores when discovering planospores are released and then culturing the planospores. In the invention, the mature ulva is irradiated by strong light so as to promote the planospores to release and meet the requirement for mass collection. The method for collecting and culturing the ulva spores has simple and practical operation, has low requirement on the mature degree of the ulva, not only stably and continuously provides a great deal of spores with normal growth and development capability for experiments, but also is convenient to observe the attachment and bourgeon status of the spores on large scale, thereby the provided method makes up the blank of the field of ulva spore collection and culture, establishes the technological base for large-scale manual culture and has wide application prospect in the aspects of alga culture, prevention test research, and the like.

The invention discloses a compression end point temperature adjusting method for a fast compressor in a lab. The method comprises the following steps that 1 ) determining the components of combustiblemixed gas in an experiment of the fast compressor; 2 ) determining the total pressure of the combustible mixed gas in a combustion chamber to be P, and calculating the corresponding partial pressurePi = P * Xi according to volume fraction of each gas; 3 ) after evacuating a gas mixing tank, filling the gas sequentially according to the corresponding gas partial pressure to complete the configuration of the combustible gas mixture; 4 ) compressing the combustible mixed gas for one step, and recording the pressure change in the combustion chamber ; 5 ) calculating is carried out according to an ideal gas heat insulation formula to obtain the compression end point temperature Tc of the experiment; and 6 ) replacing a part of argon in diluent gas with nitrogen, repeating the steps 3 )-5 ), and obtaining a compression end point temperature which is lower than the first time. According to the method, under the condition that the structure of an existing experimental device is not changed,the compression end point temperature is changed by changing the diluent gas component in the mixed gas, so that the experimental working condition range is effectively widened.

The invention relates to an arbitrary waveform generator. The arbitrary waveform generator is a data signal generator. At the time of debugging hardware, signals often need to be added for observing whether a circuit works normally. When an ordinary signal generator is used, the ordinary signal generator is cumbersome and can only generate simple waver forms, and therefore the ordinary signal generator cannot meet needs. At the time, the arbitrary waveform generator can be used for generating needed signals for relevant experimental work. The arbitrary waveform generator comprises a crystal oscillator circuit, a frequency dividing circuit, an address generator circuit, a waveform data storage device and a digital-to-analog (D/A) conversion circuit, wherein the crystal oscillator circuit, the frequency dividing circuit, the address generator circuit, the waveform data storage device and the D/A conversion circuit are connected in sequence and connected with a single chip microcomputer. According to the arbitrary waveform generator, generation of the signals is flexible and convenient, expansion of functions is flexible, signal parameters are adjustable, a software design of a hardware circuit is realized, and the arbitrary waveform generator has the advantages of being simple in circuit structure, high in practicability, low in cost and the like.

Aiming at the problems of lower heat exchange performance and the like in the existing array jet technology, the invention provides a method capable of being applied to heat dissipation of electronic devices under a condition of high heating flux, so the heat dissipation capability of the electronic devices is improved and safe operation of the electronic devices is guaranteed. The method is characterized in that nano-fluid with high heat-conducting property is led into a free surface array jet system; and by selecting the metal/metal oxide nano-fluid with the high heat-conducting property and utilizing the high heat-conducting property and a heat exchange enhancing effect of the nano-fluid, the heat exchange capability of the array jet system is effectively improved and thereby a higher heat exchange effect is obtained. Compared with the prior art, the method has the remarkable advantages that 1, the nano-fluid used as an experimental working medium has higher heat-conducting property than an ordinary working medium; 2, random motion of nano-particles in the nano-fluid is beneficial to heat transfer in the fluid, so the improvement of the uniformity of surface temperature of a heating body can be benefited; and 3, a heat exchange surface is impacted by the nano-particles in the nano-fluid, so the heat exchange capability of the free surface array jet system is improved.

The invention discloses an intelligent sterile test device and a control system thereof. The device comprises a device body, a bottle holder, an incubator drainage groove and a peristaltic pump, wherein the device body is internally provided with a motor, a speed controller, a first switching power supply, a second switching power supply and a controller, a touch display screen is embedded in a shell of the device body, the peristaltic pump is arranged on the upper end face of the device body, an output shaft of the motor penetrates through the upper end face of the device body and is in transmission connection with the peristaltic pump, a foot switch is arranged on a connection line between the motor and an external power supply, the speed controller is in controlled connection with the motor, the touch display screen is connected with the controller, the controller is in controlled connection with the speed controller, and the controller is also in controlled connection with an external label printer. The intelligent sterile test device provides convenience for an experimenter to acquire and consult sample sterile experiment standard operation specification data and previous experimental data, can maximally reduce the failure rate of the experiment, and the standardization of the experimental work is improved by controlling the label printer to print labels.

The invention relates to a stable type lymph cell separation tube. The stable type lymph cell separation tube comprises a body, a seal cover and two stabilizing mechanisms, wherein each stabilizing mechanism comprises a lifting assembly, an adjusting assembly and a sucking disk assembly; each sucking disk assembly comprises a connecting rod, a pumping chamber, a communicating pipe and a sucking disk; a pumping unit, a pumping cylinder and a piston are arranged in each pumping chamber; each pumping unit comprises a first motor, a crankshaft, a rotating block, a bearing seat and a pumping rod; each lifting assembly comprises a second motor, a screw rod and a lifting block; and each adjusting assembly comprises an air pump, an air cylinder, an air rod, a fixing block, a hinging block and a supporting rod. According to the stable type lymph cell separation tube disclosed by the invention, through the stabilizing mechanisms, the lymph cell separation tube can be fixedly connected with an experiment table, the situation that the lymph cell separation tube is dumped by collision and experimental work is influenced is avoided, and the stability and the reliability of the cell separation tube are improved.

The invention discloses a multi-working-condition simulation test rack based on a multi-axis input type double-rotor motor. The multi-working-condition simulation test rack based on the multi-axis input type double-rotor motor comprises an engine, a planetary decelerator, a double-rotor motor, a detection assembly and a load assembly; the engine inputs power to the planetary frame of the planetarydecelerator through a No.3 clutch; the gear ring of the planetary decelerator realizes power transmission with the outer rotor of the double-rotor motor through a No.1 clutch; the sun wheel of the planetary decelerator realizes power transmission with the inner rotor of the double-rotor motor through a No.2 clutch; and the outer rotor outputs power to the load assembly. According to the multi-working-condition simulation test rack based on the multi-axis input type double-rotor motor in the invention, testing of the motor performance change in multiple working modes can be realized; the experimental working condition range of the experimental rack is enlarged; a vibration excitation device supplies radial excitation to the axial extension part of the motor, and is used for simulating theradial bounce of the axial extension part of the motor in the actual working condition of a vehicle; and thus, all kinds of parameters of the performance of the double-rotor motor can be detected moretruly.

The invention relates to the technical field of medical experiments, and particularly relates to a rat fixing device and atomizing experiment equipment. The rat fixing device comprises a base, an atomizing mask and a fixing sleeve, wherein the fixing sleeve is detachably connected with the base, and is used for enclosing the body of a rat; and the atomizing mask is adjustably arranged on the base,and is used for covering mouth and nose of the rat, so that the mouth and nose of the rat can be aligned to the atomizing outlet of an atomizer. The rat fixing device can adapt to rats with differentbody types due to front-rear adjustment of the mask and tightening adjustment of the fixing sleeve, so that rats cannot move; the mouth and nose of a rat are aligned to the atomizing outlet through the atomizing mask to simulate the mode of human atomizing treatment, the drug content estimation accuracy can be improved, and the animal experiment evidence strength is reinforced; and the rat is stably controlled, so that the body safety of experiment workers can be guaranteed.

The invention discloses a simple chemical laboratory worktable. The simple chemical laboratory worktable comprises an experimental base, a vertical rod, an experimental workbench, a test tube support, a drawer and a heating support. The vertical rod is welded to one side of the upper end of the experimental base, an installation base is welded to one end of the experimental workbench, the vertical rod is inserted into the experimental workbench through the installation base, the test tube support is installed on one end of the upper part of the experimental workbench, the heating support is installed on the other end of the upper part of the experimental workbench, the drawer is installed on one side of the lower end of the experimental workbench and a guard bar is installed around the outer side of the upper side of the experimental workbench. One side of the experimental base is provided with a slot and through the slot, the experimental workbench can be installed on any side of the workbench surface and the vertical rod is inserted into the experimental workbench through the installation base so that the height and angle of the experimental workbench can be adjusted according to demands. The simple chemical laboratory worktable has a simple structure and is easy to use.

A tool for capturing and fixing the experimental animal is composed of a hollow cylindrical gatherere, a conical or cylindrical fixing net whose entrance is connected to the exit of said gatherer, and the optional barrel fixed to the lower end of fixing net, and/or fixing plate for the experimented animal and/or fixer with operating unit. Its advantages are no damage of animal to human head, high efficiency and low cost.

The invention relates to the technical field of thermal analysis, in particular to a combined thermal analysis sampling cup which is used when analysis is performed on molten metal. The combined thermal analysis sampling cup comprises a cup cover and a combined cup body consisting of more than two single cups, wherein the cup cover covers the upper surface of the combined cup body; the lower surface of the cup cover is provided with seams which extend into the cup rims of all the single cups and are matched with the cup rims; the cup cover and each single cup are positioned through each seam, and each seam is fixedly connected with the inner wall of the related cup rim; the cup cover is provided with a pouring opening; pouring passages are arranged beside the seams; and the pouring opening is communicated with a cavity of each single cup through each pouring passage. The experimental sampling workload is reduced for the new material thermal analysis experimental work, and meanwhile, the defect that the thermal analysis curve characteristic parameter cannot be accurately determined due to non-uniform pouring temperature and pouring quality for sampling of a single sampling cup is eliminated.