135results about How to "Improve test performance" patented technology

A method and apparatus for terminating a probe that probes a semiconductor device with a signal cable from a tester is provided to connect layers of the probe to layers of the signal cable side by side. The probe and signal cable can be a co-axial or tri-axial probe and signal cable, respectively. A center conductive probe needle of the probe is disposed side by side with and electrically connects to a center signal conductor of the signal cable. A dielectric layer of the probe is disposed side by side with and connects to a dielectric layer of the signal cable. A conductive guard layer of the probe is disposed side by side with and electrically connects to a conductive dispersion/guard layer of the signal cable, and a sleeve of the probe is disposed side by side with and connects to a sleeve of the signal cable. In a tri-axial embodiment, a second dielectric layer of the probe is disposed side by side with and connects to a second dielectric layer of the signal cable.

The invention relates to the technical field of electrochemical testing, and in particular to an electrochemical testing strip and a method for simultaneously testing various substances to be tested. All electrodes in the electrochemical testing strip provided by the invention are coated with modification enzyme membranes, and each electrode can be used as a working electrode for testing a specific target analysis substance in blood. The occupancy rate of the working electrodes in the electrochemical testing strip is improved, the capability of the electrochemical testing strip for testing a multi-component target substance is improved, the electrode production cost is reduced, the operation steps of testing multiple target analysis substances in the same sample are simplified, the use cost is reduced, and the amount of the required samples is reduced. The experiment shows that the electrochemical testing strip provided by the invention is used for testing the substances to be tested in the blood, so that the linearity range is wider, the recovery rate is 93 percent to 103 percent, and CV test performance is stable.

The invention discloses an underwater acoustic target radiation noise identification method based on domain adaptation. The method comprises the steps: constructing a convolutional neural network shared by a source domain and a target domain; pre-training a convolutional neural network by using a source domain label sample; respectively calculating source domain classification loss and target domain pseudo-label classification loss by utilizing the source domain label sample and the target domain sample; calculating a cross-domain multi-core maximum mean difference distance between a source domain label sample and a target domain sample in a convolutional neural network in a multi-layer manner; obtaining the total loss of the network according to the source domain classification loss, thetarget domain pseudo label classification loss and the multi-core maximum mean value difference distance; assigning a target domain sample label predicted by the network to the label-free sample through pseudo label learning, so that the label-free target domain underwater acoustic target data has the capability of supervising the training model, the category characteristics of the source domain underwater acoustic target data and the target domain underwater acoustic target data are mapped to the same mark space, and the problem that the target domain underwater acoustic target sample is notprovided with a label and is accurately identified when the data volume is small is effectively solved.

The invention provides a variable Mach number nozzle for a hypersonic low-density wind tunnel. The variable Mach number nozzle comprises a throat segment and a diffuser segment. The throat segment is connected with a front chamber through bolts; the throat segment is connected with the diffuser segment through bolts. The diffuser segment comprises a conical segment, a sliding support and an expansion joint. The diffuser segment is connected with a test segment through the expansion joint and extends into the test segment. The sliding support is mounted under the conical segment and can drive the diffuser segment to axially move back and forth. The sliding support is fixed on a wind tunnel factory foundation. The throat segments of different profiles can be changed through a back-forth movement of the diffuser segment, leading to different Mach numbers; before changing of the nozzle Mach number, compression of the expansion joint between the diffuser segment and the test segment is adjusted to allow the diffuser segment to axially move back and forth by 10-30mm through the sliding support, and smooth changing of the throat segment is guaranteed. The variable Mach number nozzle is simple in structure, lower in diffuser segment manufacturing cost and lower in equipment cost.

The invention relates to a metal/ titanic dioxide catalyst used for catalytic oxidation and a preparation method thereof. The method is mainly characterized in that: the salt of metal source is dissolved in glycol and added with a stabilizer and a structural directing molecule after being mixed with the solution of titanium source, thus acquiring a mixed solution; the solution is radiated to be evenly distributed by ultrasound and certain energy is used for radiating the solution; in the conditions of radiation and refluence, the mixed solution is stirred and added with an alkali liquor and continuously to be stirred after the adding of the alkali liquor is finished; the solution is taken out, cooled, filtered, washed and dried, thus obtaining the catalyst which consists of metal and titanic dioxide; and a molar ratio of the metal and the titanic dioxide is 0.05: 1-10: 1. The catalyst has the advantages of simple preparation and convenient operation, active components which are not easily lost, wide applicable pH range, and high catalytic activation, etc., thus being a good catalyst in certain advanced catalytic oxidation processes and has good performance by the test of samples.

The invention discloses a method for detecting the acute toxicity of water environment by using ATP bioluminescence. The method comprises the following steps: an ATP reaction reagent, luciferase, an ATP standard sample, and a water body to be detected are sequentially added in a reaction test tube, placing the reaction test tube in an ATP fluoroscope testing instrument to detect fluorescence intensity, the detection response time is 30s and the detection is served as an experimental group; the standard sample is replaced by distilled water, the detection is served as a control group; the experimental group and the control group are repeatedly detected for three times; and the toxicity of the water body is judged by calculating relative luminance K. The method of the invention has the characteristic of stable and sensitive test effect; and the effect of a luminescent bacteria test can be reached within 3 min of the testing time at most; and the response on organic toxic substances is more sensitive than the luminescent bacteria. In the invention, a portable ATP handholding instrument with a direct current power supply is adopted, thus the ATP handholding instrument is convenient to be carried and is suitable for site test.

A simple mimic-disconnecting switch circuit comprises commutating bridge, direct current replay, LBD, diode and resistance, the four direct current replays set in mimic-disconnecting switch circuit constructs logic action circuit of the mimic-disconnecting switch, it includes a HQ in mimic-disconnecting switch switching loop, a HCJ in simulating switching control loop, a TQ in mimic-disconnecting switch tripping loop, a TCJ in simulating tripping control loop. The circuit of the invention is simple, test property is stable, the cost is low, and the capacity is small, the weight is light, it suits for engineering maintain personnel to take, and it is a assistant tool for debugging locale.

The invention relates to artificial lens synthetic mica which is prepared from the following raw material in percentage by weight: 34%-36% of quartz sand, 11%-13% of alumina, 28%-30% of fused magnesite, 18%-21% of potassium fluosilicate and 3%-5% of potassium carbonate. A preparation method of the artificial lens synthetic mica comprises the following steps of: 1) dosing, stirring and mixing uniformly for later use; 2) manufacturing a vessel; and 3) adding raw materials uniformly stirred and mixed in the step 1 into the vessel, switching on a three-phase power supply and performing electrothermal igneous fusion on the raw materials in the vessel according to four phases of arc strike, heating-up, heat preservation and cooling, so as to prepare the artificial lens synthetic mica. The artificial lens synthetic mica has the advantages of strong light permeability, high mechanical property, good heat-resistant performance, stable electrolysis performance, high corrosion resistance and less air release rate under vacuum; and the preparation method can be used for utilizing energy sources more effectively, saving energy sources, lowering the cost and preparing the artificial lens synthetic mica with high quality.

The invention provides a signal receiving channel frequency response compensation method under the condition of wide temperature range, comprising the following steps: arranging temperature sensors in temperature-sensitive positions of a signal receiving channel of an instrument to acquire real-time temperature change in the positions of the channel when the ambient temperature changes; constructing a frequency response compensation model of the signal receiving channel determined by the sensitive positions; acquiring calibration parameters through calibration; and compensating the frequency response of the sensitive positions by use of the calibration parameters and the compensation model according to the real-time temperature of the positions of the channel. By using the compensation method of the invention, the frequency response of the signal receiving channel of the instrument can be compensated accurately in real time in a wide temperature range and in a wide frequency range, and the channel frequency response after compensation keeps the same order of magnitude of flatness in the full temperature range. Therefore, the instrument can provide the same amplitude measuring precision at any temperature in the full temperature range, and the amplitude measuring accuracy is improved significantly.

The invention relates to a surface plasma resonance (SPR) sensor chip as well as a preparation method and application thereof and belongs to the field of medical detection. A structure of the SPR sensor chip is as follows: the surface of a substrate glass sheet is coated with a chromium film and a gold film in sequence, a biotin-miRNA probe is modified on the surface of the coated gold film; the biotin-miRNA probe is used for reducing sulfydryl by applying tri(2-carboxyethyl) phosphine (TCEP (Trichloroethyl Phosphate)), and 6-sulfydryl 1-hexyl alcohol (MCH) is used for plugging. The surface plasma resonance (SPR) sensor chip has the beneficial effects of being used for directly detecting molecules with low molecular weight and ultra-low concentration; moreover, the invention discloses the preparation method of the SPR sensor chip, according to the preparation method, the preparation cost is low and the test effect is stable; the invention discloses application of the sensor chip, the application method of the chip is simple, special equipment is not needed; moreover, test materials are reproducible and can be recycled, and the test effect is good.

The invention discloses a multi-channel serially connected lithium battery detector. The detector comprises a monitor host machine, a master controller which is arranged for detecting an overall discharging voltage of a battery tank which comprises a plurality of lithium batteries and is in discharging state and uploading a detected data to the monitor host machine, a multi-channel collecting module connected with the lithium batteries, a display module and a storage module respectively connected with the master controller, wherein the master controller is provided with a voltage detection module; the multi-channel collecting module is connected with the master controller; and the multi-channel collecting module forms a multipath analog signal input passage between the lithium batteries and the master controller. The invention has the advantages of simple structure, convenient wiring, small volume, portability, a plurality of detection passages and excellent detecting property. The detector of the invention can efficiently detect the serially connected batteries, can meet the detection demand of high voltage and high precision, and can overcome the shortcomings of the current battery detector.

The invention belongs to the steel technical field, and specifically, relates to a vanadium-nitrogen microalloyed high-strength phase-transformation induced plastic steel seamless pipe and a preparation method thereof. The vanadium-nitrogen microalloyed high-strength phase-transformation induced plastic steel seamless pipe comprises the chemical ingredients by the weight percentage: 0.18%-0.24% of C, 1.0%-1.6% of Si, 1.2%-1.6% of Mn, 0.17%-0.22% of V, 0.01%-0.03% of N, not more than 0.06% of P, not more than 0.005% of S, and the balance iron and unavoidable impurities. With utilization of an intermediate-frequency induction heat treatment device of a thin-wall steel pipe and with supplementary of a vanadium-nitrogen microalloyed component design, the advantage of cooperation of good strength and elongation of phase-transformation induced plastic steel is successfully applied to the steel pipe production field, a fact of replacing solid components with hollow components is effectively realized so as to achieve automobile light weighting, besides, further development of an internal high pressure forming technology is promoted, not only are the internal high pressure formed components with high strength, large deformation and complex shape produced, but also the production cost is greatly reduced, and the preparation method has wide application prospects are provided.

The invention relates to a steady ischemia modified albumin kit, which comprises a cobalt ion reagent and a dithiothreitol reagent, wherein the cobalt ion reagent comprises the following components: 50-500 mmol/L of buffer solution, 0.01-1.0 g/L of cobalt chloride, 1 g/L of surface active agent, and 0.5 g/L of preservative; and the dithiothreitol reagent comprises the following components: 50-300 mmol/L of buffer solution, 0.01-1.0 g/L of dithiothreitol (DTT), 1 g/L of surface active agent, 1-20 g/L of protective agent, and 0.5 g/L of preservative. The kit disclosed by the invention can reach reaction endpoint rapidly and is steady in property; after being opened, the kit can be stably stored in a dark place at room temperature for 30 days; after being closed, the kit can be stably stored at 2 DEG C -8 DEG C for 12 months, and therefore, clinical test requirements can be completely satisfied.

The invention discloses a laptop battery monitoring system, which comprises a communication measurement module, an electronic load board card, a linear power supply board card, an internal resistance tester board card, a digital multimeter board card, a control unit board card, a test loop unit and an industrial personal computer, wherein the communication measurement module, the electronic load board card, the linear power supply board card and the internal resistance tester board card are mutually and electrically connected with the industrial personal computer through component object model (COM) serial port interface circuits; the digital multimeter board card and the control unit board card are mutually and electrically connected with the industrial personal computer through peripheral component interconnect (PCI) interface circuits; and the output of each board card is mutually and electrically connected with a laptop battery to be tested through the test loop unit. The laptop battery monitoring system has the beneficial effects that a technical scheme combing a PCI framework, a high performance test module and a communication module is adopted by the laptop battery monitoring system, so the test cost is greatly reduced; the monitoring system can be independently allocated, so the test efficiency is improved; and the laptop battery monitoring system is compatible with various electric quantity monitoring chips.

The invention discloses a high-strength plastic vanadium microalloyed dual-phase steel seamless pipe and an on-line preparation method thereof. The seamless pipe is composed of the following chemical components in percentage by mass: 0.10-0.18% of C, 0.1-0.6% of Si, 1.1-1.6% of Mn, 0.16-0.20% of V, 0.01-0.03% of N, at most 0.006% of P, at most 0.005% of S, and the balance of Fe and other inevitable impurities. The intermediate-frequency induction heat treatment device of the thin-wall steel pipe is utilized and assisted by the vanadium microalloyed component design to produce the dual-phase steel seamless pipe with favorable comprehensive mechanical properties; the advantages of low yield-tensile ratio, high rate of work hardening, favorable strength and favorable elongation percentage of the dual-phase steel are matched and successfully applied to the field of production of steel pipes to efficiently substitute solid components with hollow components, thereby implementing light weight of the automobile; and meanwhile, the seamless pipe promotes further development of the internal high-pressure forming technique, and has wide application prospects.

The invention relates to the field of disposable tableware, and aims to provide fully-degradable disposable vegetable fiber tableware which is capable of realizing full degradation. The fully-degradable disposable vegetable fiber tableware is prepared by mixing and pressing the following components in parts by weight: 65-80 parts of vegetable fibers, 6-8 parts of polyvinyl alcohol, 0.5-1.0 part of edible pigment, 1-2 parts of polyethylene wax, 1-2 parts of glycerol, 1-2 parts of sodium bicarbonate, 1-2 parts of edible gelatine, 1-2 parts of terpene resin and 1-2.5 parts of shellac.

The invention discloses a multi-channel digital signal optical fiber transmission test device, and aims to provide a test device with stable test performance and high reliability. The device is realized by the following technical scheme: one channel of analog electrical signals sent by a standard signal source is divided into 16 channels of equal-amplitude and in-phase signals through a power divider cabinet, the 16 channels of signals are transmitted to a dual-channel AD board group in a main control cabinet and converted into digital electrical signals, the digital electrical signals are sent to an optical fiber cabinet through GTX high-speed connectors connected with corresponding AD boards and converted into 64 channels of optical signals through respective electro-optical conversion module groups, the 64 channels of optical signals are combined into four channels of optical signals through four DWDM dense wavelength division multiplexers, the four channels of optical signals are combined into one channel of optical signals through an optical matrix switch, and the one channel of optical signals is sent to a device under test; and the device under test emits one channel of optical signals which is divided into two channels of optical signals through an optical matrix switch, the two channels of optical signals enter DWDM dense wavelength division multiplexers and are divided into 16 channels of optical signals of different wavelengths, the digital electric signals are converted into analog signals through digital-to-analog (DA) conversion, and the bit error rate is tested by a standard instrument.

The invention belongs to oil pump field, in particular to an oil pump performance detection system. The system comprises an oil pump (10) consisting of a run test device and a detection control device; the oil pump (10) is fixedly arranged on the run test device; the detection control device arranges and outputs the data collected by the automatic run test device. The oil pump can be arranged on the run test device for operation; the detection control device detects all values of the oil pump in operation process and arranges and outputs the values, thus facilitating the technician to have a comprehensive understanding of the performance of the oil pump and validate and improve the designed oil pump. The invention has simple structure, convenient application and good testing performance.

The invention provides a rapid detection method for ochratoxin A. The method comprises the following steps that a large number of methylene blue molecules are loaded in a microporous silicon nano-material; an aptamer of the ochratoxin A closes the microporous silicon nano-material loaded with the methylene blue molecules; after ochratoxin A samples are added, due to the fact that the ochratoxin A samples and the aptamer are subjected to specific binding, the aptamer comes away from the microporous silicon nano-material surface, and the methylene blue molecules are released. By means of screen-printed electrodes and a portable electrochemical detector, an electric signal of methylene blue in supernatant is detected, a relation curve between the electric signal and the concentration of the ochratoxin A, and therefore indirect quantitative detection of the ochratoxin A is achieved. On the basis, the signal amplification effect of an enzyme is introduced. After nuclease is added, a G-quadruplex structure formed between the ochratoxin A and the aptamer is selectively destroyed, the ochratoxin A returns to a solution in a free state, the above mentioned processes are repeated. In this way, the sensitivity of detection can be greatly improved. According to the method, the sensor building process and detection process do not need expensive instruments and reagents, operation is easy, and the sensitivity is very high.

The invention belongs to the technical field of decorative films and particularly relates to a peelable UV transfer printing decorative film for a film coating colored board and a preparation method of the peelable UV transfer printing decorative film for the film coating colored board. The decorative film comprises a peeling layer arranged on a base film layer, a texture layer arranged on the peeling layer, an aluminum coated layer arranged on the texture layer, and a bonding layer arranged on the aluminum coated layer; and a material of the base film layer is selected from one or more of polyethylene terephthalate, polyvinyl chloride, polyethylene, polypropylene, polyamide and polyvinyl alcohol. The manner that the peeling layer protects the texture layer is adopted for the peelable UV transfer printing decorative film, and the phenomenon that in the prior art, the base film layer and the texture layer are peeled off cannot occur.

The invention discloses a hydraulic motor detection experimental system. The hydraulic motor detection experimental system comprises a console, a hydraulic pump station and an experimental console; the hydraulic pump station is used for supplying hydraulic oil to the experimental console; electric control equipment and an operation device are mounted on the console; a testing instrument, a sensor and a fixed fixture are arranged on the experimental console; the fixed fixture is connected with the testing instrument for quickly accessing a hydraulic motor to be detected into the experimental console; the hydraulic pump station includes a hydraulic oil tank, and a main way oil supply pump and an auxiliary way oil supply pump connected with an oil outlet pipeline of the hydraulic oil tank; the main way oil supply pump is connected with the hydraulic motor to be detected through a one-way valve, an electrohydraulic reversing valve I and a one-way throttling valve; and an oil return port of the hydraulic motor to be detected is connected with an oil return port of the oil tank through the one-way throttling valve, the electrohydraulic reversing valve I and the one-way valve. The hydraulic motor detection experimental system is simple in operation, can quickly finish setting and connection of different detecting items, adopts two ways to oil supply by branched ways, is stable in testing performance, can realize testing of different testing pumps, and is high in compatibility and automation degree.