38results about How to "The test results are reliable" patented technology

The invention relates to the technical field of testing of material complex permittivity, in particular to a method for measuring material complex permittivity based on substrate integrated waveguide round resonant cavities. The method comprises the steps that firstly, the substrate integrated waveguide round resonant cavities with different resonant frequencies (work frequencies) are machined; secondly, for the substrate integrated waveguide round resonant cavities with the same resonant frequency, a sample with material identical to that of a dielectric layer 2, a standard sample with the known complex permittivity and a sample to be measured are respectively loaded, swept-frequency signals are fed respectively through a vector network analyzer, and the resonant frequencies and the quality factors of the three samples are tested; finally, simultaneous equations are established and solved, and then the complex permittivity of the sample to be measured at the work frequency of the corresponding substrate integrated waveguide round resonant cavity can be obtained. A multi-frequency-point clock test of the material complex permittivity can be completed in the mode that the substrate integrated waveguide round resonant cavities with other work frequencies are used and the same test process is repeated. The method for measuring material complex permittivity based on the substrate integrated waveguide round resonant cavities has the advantages that the sizes of the substrate integrated waveguide round resonant cavities are small, machining is convenient, and the precision of a measurement result is high.

The invention discloses a preparation method of an activated carbon adsorption film and a method for measuring bisphenol substances in wetland soil or sediment based on a thin-film diffusion gradient technique, and belongs to the fields of environmental sciences and earth sciences. According to the preparation method of the activated carbon adsorption film, the activated carbon adsorption film is prepared by mixing activated carbon as an adsorbent with agar, and then is overlapped on an agar diffusion film and a PTFE filter film to form a DGT device; after nitrogen introduction pretreatment, the DGT device is put into the wetland soil or the sediment to be tested for 24 hours, and then the activated carbon adsorption film is taken out and eluted by use of an eluent which is the mixed solution of methanol and sodium hydroxide; next, the adsorbing capacity of the bisphenol compounds in the adsorption film is measured and the concentration of the bisphenol substances in the wetland soil or the sediment is calculated according to the Fick's first law of diffusion. The preparation method of the activated carbon adsorption film is simple in process, the adsorbent is even in distribution, the adsorbing capacity is high and the quality guarantee period is long; the DGT technique based on the adsorption film is simple and easy to operate and the testing result is representative, and therefore, the DGT technique is suitable for in-situ detection of the bisphenol substances in the wetland soil or the sediment.

The invention discloses an adsorption film mixing three metallic oxides and a preparation method thereof and a method for measuring fluorinion based on a gradient diffusion thin film technology. The adsorption film takes three oxides, namely iron, aluminum and cerium as adsorption materials, and the three oxides are uniformly dispersed into a polyacrylamide solution to form a gel and the gel is heated to form an adsorption film. The adsorption film, a diffusion film and a filter membrane are overlapped to assemble a DGT device, and the DGT device is placed into water body and sediments to realize in situ testing of fluorinion and the subcentimetre high resolution detection of fluorinion distributed in the water body and sediments. The adsorption film prepared by adopting the preparation method disclosed by the invention is large in adsorption capacity, long in retention time and easily available in materials; compared with the traditional fluorinion selective electrode method, the fluorinion in situ test method based on the gradient diffusion thin film technology is wide in application range and the result has more representativeness.

The invention discloses an evaluation method of multimedia message service user perception and experience QoE for simulating user behavior. The method comprises the steps of firstly setting a multimedia message service QoE evaluation index system including sending and receiving two types of user perception and experience parameters, in terms of service access, service maintenance and service completion, through multimedia message, then adopting a test terminal to simulate the process of sending and receiving multimedia message by the user, respectively gathering and computing key performance indexes KPI of the two types of user perception and experience of the multimedia message service, further computing corresponding key quality indexes KQI of the multimedia message service, adopting a mental model to perform comprehensive operation to KQI, so as to obtain key experience indexes KEI of the corresponding multimedia message service, and then performing comprehensive analysis to the KEI indexes, so as to obtain 5-point system multimedia message service QoE values equivalent to international standard mean opinion score MOS. The method has the advantages that the evaluation parameter standard is objective and practical, the operation steps are simple, the computation complexity is low, and the method is easy to realize, and can simulate the user behavior to obtain objective and fair user perception and experience quality.

The invention discloses a multistation computer test system facing multitandem valves. The test system comprises a computer data processing system, a plurality of test stations formed by data acquisition systems, hydraulic systems, tested multitandem valves and sensors, and a 485 bus. The system can carry out various tests for the multitandem valves, each oil port is provided with a pressure sensor and a flow sensor, pressure and flow signals can be collected in the tests, the pressure and flow signals are converted into electric signals, after the electric signals are converted into digital signals through analog to digital conversion, the digital signals are converted into pressure and flow data through a single chip program to be stored into a data storage module and simultaneously displayed through a display module; and the computer data processing system reads the data stored in all the station data storage modules through the 485 bus, the data are written into a data base to be analyzed and processed, a report is generated, the various test stations can work simultaneously or independently without mutual interference. The multistation computer test system can provide rapid and effective computer-aided testing means for the multitandem valve testing.

The invention provides a calcite mineral laser uranium-lead isotope dating process. The process comprises raking via a calcite sample to be detected and standard samples, and the standard sample at least comprising an isotope fractionation correction standard sample, an age correction standard sample and a verification standard sample WC-1; carrying out laser ablation sampling on the calcite sample to be detected and the standard samples, and respectively carrying out isotope detection on obtained ablation products; correcting obtained isotope values by utilizing the isotope fractionation correction standard sample; respectively calculating the test ages of the calcite sample to be detected, the age correction standard sample and the verification standard sample WC-1 by utilizing the corrected isotope values; determining an age correction factor according to the test age and the recommended age of the age correction standard sample; correcting the test age of the calcite sample to be detected and the test age of the verification standard sample WC-1 by using the age correction factor to obtain the final age of the calcite sample to be detected and the final age of the verificationstandard sample WC-1; and judging whether the test result is valid or not according to whether the final age of the verification standard sample WC-1 is within the recommended age range or not.

The invention relates to a novel nephropathy detection kit. The problem that the existing nephropathy detection kit has no functions of clamping and positioning a test tube and separately sealing thetest tube is solved. A technical scheme for solution is as follows: a clamping device for clamping the test tube is arranged in a test tube groove of the novel nephropathy detection kit, when a patient places an urine test tube in the test tube groove, the urine test tube can be clamped and positioned; multiple test tube plugs are arranged at a lower end surface of a cover plate of the nephropathydetection kit; when the kit is filled with the test tube, a doctor on duty is responsible for covering the cover plate so that multiple test tube plugs at the lower end surface of the cover plate arejust plugged into the urine test tubes in the test tube groove, multiple urine test tubes can be sealed in single use, the operation is convenient and simple, the time is saved, and the working efficiency is improved.

An ability verification sample of liquid containing niacinamide is composed of 4 - 9 liquid samples as their concentration being presented in equal ratio relation. The equal ratio coefficient between liquid samples is 0.60 - 0.95 and samples solvent is 0.9 % sodium chloride - normal saline. The method for preparing the samples is also disclosed.

The invention discloses a temporary plugging ball evaluation device and a method for testing the plugging performance of a temporary plugging ball by using the same. The evaluation device comprises astorage bin, a cut-off valve, a flow guide chamber, a test cylinder and a pressure relief pipe which are sequentially connected from upstream to downstream, and a flowing channel allowing temporary plugging balls to sequentially flow is formed between the storage bin, the cut-off valve, the flow guide chamber and the test cylinder. The storage bin is used for storing temporary plugging balls and connected with a first water injection pipeline, and the first water injection pipeline is connected with the fluid pump. The stop valve is used for controlling the on-off state of a flow channel between the storage bin and the flow guide chamber. A second water injection pipeline, an overflow pipeline and a pressure relief pipeline are connected to the flow guide chamber, and the second water injection pipeline is connected with the fluid pump; at least one shot hole is formed in the periphery of the testing cylinder, the outer end of each shot hole is connected with a liquid discharging pipeline, and a temperature control structure is arranged on the periphery of the testing cylinder. The pressure relief pipe is connected to the tail end of the test cylinder, and a pressure relief valve is connected to the pressure relief pipe. The evaluation result of the method is objective, accurate and reliable, and the method is beneficial to accurately, reliably and effectively guiding the formulation and implementation of the subsequent fracturing process.

The invention discloses a mechanical fuel pump durability test bench for a gasoline engine. The test bench comprises a motor device, a belt transmission device, a gasoline engine cylinder cover-camshaft device, an oil supply device, a cooling device, a lubricating device, a measuring device and a control device; the motor device, the belt transmission device, the gasoline engine cylinder cover-camshaft device, the oil supply device, the cooling device, the lubricating device, the measuring device and the control device are all arranged on the test bench, and the motor device is connected withthe gasoline engine cylinder cover-camshaft device through the belt transmission device, the oil supply device, the cooling device and the lubricating device are connected to the gasoline engine cylinder cover-camshaft device through pipelines, the measuring device is connected to the oil supply device and is used for measuring the fuel pressure and the oil quantity, and the measuring device is electrically connected with the control device. The mechanical fuel pump durability test bench is mainly used for oil pressure and flow monitoring of the mechanical fuel pump, and meets the endurance fatigue test requirements of the fuel pump. The mechanical fuel pump durability test bench can drive six tested mechanical fuel pumps to work at the same time, and the requirements of low energy consumption and high efficiency are met.

The invention provides a three-support point porcelain bushing vibration detector. The three-support point porcelain bushing vibration detector comprises an insulating rod and an auxiliary support apparatus. The upper end of the insulating rod is provided with a portable porcelain post insulator charged flaw detector. The lower end of the auxiliary support apparatus is connected to the portable porcelain post insulator charged flaw detector or the insulating rod. When a porcelain bushing is detected by the portable porcelain post insulator charged flaw detector, the upper end of the auxiliary support apparatus and two probes of the portable porcelain post insulator charged flaw detector can simultaneously contact with the cylindrical surface of the porcelain bushing. A test result shows that the three-support point porcelain bushing vibration detector is trusted. The three-support point porcelain bushing vibration detector can be operated simply, has high detection efficiency and is convenient for detection of various types of porcelain bushings.

The invention provides a method for testing and adjusting cluster storage system performance based on a synchronous strategy. The method comprises a data node module group, a control module group and a client node module group, wherein the three module groups cooperate and communicate with each other, and take the control module group as the core to finish the system test and monitoring tasks together; the control module group is used for scheduling load and balancing all modules, and collecting the test result and synchronizing the time of all modules; the data node module group is used for collecting the data node monitoring information and realizing time synchronization; and the client node module group is used for simulating the read/write operation, collecting the monitored data of the client node and realizing time synchronization.