295results about How to "Suitable for testing" patented technology

The invention discloses a preparation method for increasing raman activity of a basement in a surface of a large area of a micro-nano tree structure array, which firstly prepares a large area of a silicon micron cylinder array; a nanometer assembling technology is used for producing a nanometer stick in the silicon micron cylinder array. then a three-dimensional ordered periodic micro-nano structure array is obtained; and various appearance of metal nano-particles are embedded into the three-dimensional ordered periodic micro-nano structure array by using a way of a hydro-thermal synthesis method. A SERS activity basement of the invention can achieve homogenization from a centimeter grade to a large area. The invention designs SERS activity hot-particles on the three-dimensional ordered micro-nano structure, and assembles increasing effect of antenna, the increasing effect of metal / semiconductor intersection and the increasing effect of a gap into one body, then high sensitivity of the SERS activity is obtained, and the SERS activity hot-particles is firmly embedded into the tree micro-nano structure, then the invention is not only applicable for a SERS test of trace liquid-phase analyte, but also for the SERS test of trace gaseous-phase analyte.

An immune chromatographic method includes fixing capture antigen or antibody directly on chromatographic film (PH) by physical absorption means, adding sample liquid and label antibody on sample cushion side of PF and forming immmune composite through immune reaction, detecting formed detection and control belts, sticking PE, sample loading cushion, label cushion and water absorption cushion in sequence on backing. The test paper is also disclosed.

The invention discloses a device for testing an infrared focal plane array device, which comprises a radiation source and focal plane array module, a drive control module and a data acquisition processing module, wherein the radiation source and focal plane array module comprises an infrared radiation source, an optical system and a tested infrared focal plane array; the drive control module comprises a bias control module, a temperature control module and a time sequence control module; and the data acquisition processing module comprises an analog-to-digital signal converter, a video output module, a data acquisition card and a data analysis processing module. The device of the invention has the characteristics of low cost, high efficiency, accuracy, reliability and the like, is suitable for testing the large-scale infrared focal plane array device, and is of very important instructive significance to the designer of the device and the designer of an imaging system.

The invention discloses a method and a device for automatically detecting surface defects of spherules based on machine vision. The device comprises an automatic spherule distribution device, an image pickup device, an automatic blanking device and an automatic spherule rolling device, wherein the automatic spherule rolling device rotates automatically and circularly among the automatic spherule distribution device, the image pickup device and the automatic blanking device through a delivery mechanism; and the delivery mechanism is connected with a PLC which is in signal connection with a computer. The detection method comprises the following steps of: automatic classification of the sphere dimension, automatic charging and automatic array distribution of the spherules, acquisition of ever changing spherical surface images through a camera, array positioning of spherules with defects, elimination of the spherules with the defects through an eliminator, blanking, and the like. The invention drives spheres to be subjected to automatic array distribution in batches and simultaneously be subjected to automatic multidirectional rolling, makes the spherical surfaces in the whole array capable of being imaged and recognized simultaneously, does not need to take kerosene as a working medium, and is suitable for detecting spherules made of any material.

The invention relates to a freeze-drying protective agent of nucleic acid amplification reaction reagents and a freeze-drying method. The invention provides a composition for freeze-drying protection, which is the following 1) or 2): 1) the composition comprises mycose, mannitol, bovine serum albumin, and water with a ratio of 4.0-25g:1-7g:1.0-7g:49-50ml; 2) the composition comprises mycose, mannitol, bovine serum albumin, Tween, Tris-HCl and water with a ratio of 4.0-25g:1-7g:1.0-7g:0.1-0.25ml:2.5*10<-3>-5.0*10<-3>mol:49-50ml. The freeze-drying protective agent of the invention is low in raw material cost, simple in operation, and suitable for large-scale production, can reduce production cost, and can effectively prolong the storage life of nucleic acid amplification reaction reagents.

The invention discloses a kind of current sensor, the character lies in: the feedback windings in the two symmetrical channels are connected in series, one end is accessed to the ground, the other end is accessed to one end of the sample resistance; the output of the symmetrical Hall elements are amplified, then carries on filter, voltage-current transform, current amplifying process, the output end is accessed to another end of the sample resistance, the detected voltage signal detected at two ends of the sample resistance; it also includes Rogowski coil, the two ends of the coil are connected in parallel to the sample resistance, the detected voltage signal of sample resistance is amplified, filtered and integral amplified, and transmitted to the computer; the computer process the data and transmits the detected current to the monitor to be displayed; the precision is higher than 0.5%. The power consumption is small, the temperature additional error is less than 0.1% / 10 degrees centigrade, the structure is simple, and easy to be assembled, debugged and maintained.

The invention provides a film single-shaft bidirectional tensing mechanism and a measuring method for the deformation in the film, and pertains to the field of precision machinery. The mechanism uses two piezoelectric ceramics 8 to push from two directions respectively a slider 4 and an adjustable slider 3 that can move along a slideway 2, between the slider 4 / the adjustable slider 3 and a support 1, limit springs 9 are used for limiting; on the slider 4 and the adjustable slider 3, a force sensing arm 6 is fixedly connected respectively; the top of the force sensing arm 6 is connected with a stage. At measuring, first a film specimen to be measured is clamped on the stage; then the piezoelectric ceramics 8 are applied with voltage continuously, so that the two force sensing arms 6 will have mini displacement opposite to each other; meanwhile, the images and mechanic parameters of the film deformation are recorded by a real-time acquisition system and stress pieces 5 attached on the force sensing arms 6. By the invention, the measuring area can be observed continuously, and measurement of wider range can be carried out by force sensing arms of different measuring ranges.

The invention relates to a test stand for power systems of automobiles, and an automatic test method of working conditions. The test stand for the power systems of the automobiles comprises a load simulation unit, a test control unit and a driver simulation unit, wherein the load simulation unit is used for simulating road loads, and is connected with a power system to be tested in a transmission manner; the test control unit is used for controlling the load simulation unit; the input interface of the driver simulation unit is used for inputting the information of working conditions, and the driver simulation unit is provided with a control interface for being connected with a whole-vehicle controller of the power system to be tested and an interface for acquiring actual vehicle speed; the information of working conditions at least comprises real-time given vehicle speed; the driver simulation unit generates control signals through the comparison of the actual vehicle speed and the given vehicle speed, and the whole-vehicle controller receives the control signals, so that the power system can run according to the real-time given vehicle speed. According to the automatic test method of working conditions, any operation of a driver is not needed, and the full automatic test is realized.

The invention discloses a device and a method for detecting glucose based on optical fiber surface plasma resonance. The device comprises a light source, a polarizer, a polarization controller, a sensor probe, a filter and a photoelectric detector which are connected with each other in turn through an optical fiber, wherein the sensor probe comprises the optical fiber engraved with inclined fiber bragg gratings; a metal film in nanometer-level thickness is plated on the outer surface of the covering of the optical fiber; the light emitted from the light source passes through the polarizer and the polarization controller and then enters into the optical fiber engraved with the inclined fiber bragg gratings on the sensor probe; a covering film generated in the optical fiber is coupled with the metal film on the outer surface of the covering of the optical fiber; the surface plasma resonance is stimulated; the light containing the plasma resonance output by the optical fiber is sent into the photoelectric detector by the sensor probe through the filter. According to the invention, glucose oxidase is added into a to-be-measured serum solution, so that a hydrogen peroxide corroded metal film is formed, and the glucose concentration in the serum solution is acquired according to a response rate of the light intensity which changes along with the time and is detected and acquired by the photoelectric detector.

The invention discloses an orthogonal polarization optical fiber biological refractive index sensor and a detecting method thereof. The refractive index sensor includes a broadband light source, a polarizer, a polarization controller, a sensor probe and an orthogonal polarization demodulation processing unit which are sequentially connected with one another by optical fibers; the sensor probe includes a microfluidic control chip for control of injection and discharge of a trace biological solution, and tilted optical fiber optical gratings arranged in microfluidic channels of the microfluidic control chip; the orthogonal polarization demodulation processing unit includes an optical fiber polarization beam splitter, a first spectral detector, a second spectral detector and a spectrum differential module; the sensor probe is connected with the input ends of the first spectral detector and the second spectral detector through the optical fiber polarization beam splitter, and the output ends of the first spectral detector and the second spectral detector are connected with the spectrum differential module. The refractive index sensor has the advantages of high measuring precision of the refractive index, and can realize simultaneous measurement of environmental temperatures.

The invention discloses a bridge strain detection sensor based on a wireless sensing network interface. A data collecting module of the sensor is connected with a weak signal conditioning amplifier module, the weak signal conditioning amplifier module is connected with a data processing module, the data processing module is connected with a wireless transmission module, the wireless transmitting module is connected with a wireless receiving module, and finally the wireless receiving module is connected with a PC terminal; an ATmega 128L single chip in the data processing module is provided with an eight-channel tens-place ADC switching port, so that the strain detection sensor can detect the strain signals of eight channels, thus a CC 2420 radio frequency chip of the wireless transmitting module is used for carrying out wireless transmitting. And the signals are received by the wireless receiving module and then transmitted to the PC terminal by an SPI bus. The invention can detect the bearing capacity of the bridge and verify and develop the structural design of the bridge, and has the characteristics of no wiring, high detection efficiency, real-time detection, etc.

The invention belongs to the field of cell biology, relating to a cell preserving fluid and a preparation method and use thereof. Concretely, the cell preserving fluid comprises a fixing agent, a fixing agent assistant, an anticoagulant, a cushion fluid and an ionic strength maintenance agent. The cell preserving fluid is characterized in that the content of the anticoagulant is 0.01% to 1.5%(w / w); the content of the ionic strength maintenance agent is 0.01% to 1%(w / w); and the cell preserving fluid does not contain a disulfide bond open reagent. The cell preserving fluid can effectively preserve cell DNA (deoxyribonucleic acid) and virus DNA infecting the cell, is convenient to collect the cast-off cells and extract DNA and can give attention to storage of the cell structure. The invention also relates to the preparation method and the use of the cell preserving fluid. The invention also relates to a kit and a method for detecting HPV (Human Papilloma Virus) or HPV DNA.

The invention discloses a high-accuracy high-spatial resolution long range profile detection system, which comprises a workbench, a transmission platform, a laser light source, a scanning optical head, a beam splitting prism and a signal acquisition processing unit, wherein the scanning optical head is arranged on the transmission platform; the beam splitting prism is used for deflecting light output from the laser light source for incidence into the scanning optical head, and an incident direction is consistent with the scanning direction of the transmission platform; the scanning optical head is used for deflecting and focusing incident light beams to the surface of an object to be detected in a detection area, for the object to be detected, of the workbench; and light reflected by the surface of the object to be detected in the detection area for the object to be detected sequentially passes through the scanning optical head and the beam splitting prism, and enters the signal acquisition processing unit. The system can be used for the high-spatial frequency sampling measurement of the surface to be detected, and the measurement accuracy is high; and the system can be used for measuring a large-sized object, and is particularly suitable for the detection of an optical element on a synchrotron radiation beam.

The invention discloses a loop-mediated isothermal amplification detection primer group, a detection method and a kit of vibrio parahaemolyticus. The detection primer group is as follows: an upstream outer primer F3: 5'-GCAAAGAAACGCTTGGCG-3', a downstream outer primer B3: 5'-TGCATAGCAATGTTGTCGCT-3', an upstream inner primer FIP: 5'-TCTCTCGGGTGGTGGATGGGTTTCGTTACACTCCGTTCGC-3'; a downstream inner primer BIP: 5'-ATGGTTTGCTACTCTCGCACCCTCGGCTGACAAATGGCTCTA-3'. The detection method disclosed by the invention has the advantages of high sensitivity, high specificity, good accuracy rate and short detection time, only 12 hours are taken from sample treatment to result report, no PCR instrument or electrophoresis instrument is needed, the operation process is simple, and compared with other PCR techniques, the loop-mediated isothermal amplification detection primer group is relatively high in specificity and is applicable to detection of primary testing organizations and food companies.

The invention provides a method for simultaneously detecting main components of paeoniflorin, beta ecdysterone, laetrile, mulberroside A, caffeic acid, ferulic acid, salvianolic acid B, astragaloside, formononetin, cryptotanshinone and tanshinone IIA of a Naoxintong capsule in a plasma sample by a liquid chromatography-tandem mass spectrometry (HPLC-MS / MS). In a liquid chromatogram, a mobile phase consists of acetonitrile and a formic acid aqueous solution of which the volume fraction is 0.1%, and gradient elution is used. A mass spectrum uses a quick positive and negative ions switching and analyzing mode and an MRM (Multiple Reaction Monitoring) scanning manner. After the Naoxintong capsule is taken, the situations of the changes of the blood-medicine concentration of several kinds of main components in the plasma of a rat are detected at the same time. The methodological survey results indicate that the established method conforms to determination requirements on biological samples in a body; the method is good in sensitivity, high in specificity, stable, reliable, and suitable for detecting substances with lower contents.

The invention discloses a high-spatial-discrimination long-range facial-form detecting device and method. The device comprises a scanning optical head and is characterized in that the scanning optical head comprises a small hole array plate, a beam splitter, a lens array and an array detector, the small hole array plate divides input parallel light beams into a plurality of parallel thin light beams, then the light beams enter the beam splitter, each thin light beam is input to the lens array in a transmission mode through the beam splitter, lens units in the lens array focus the corresponding thin light beams to the surface of an object to be tested respectively, and the light beams reflected by the surface of the object to be tested enter the array detector through the lens array and the beam splitter in sequence. The device is simple in structure and stable in performance, high-space-frequency sampling measuring can be carried out on the surface to be tested, measuring of facial-form errors of high frequency (larger than 1 line / mm) can be expanded, and at least 10 lines / mm can be achieved commonly.

The invention discloses a DNA (Deoxyribonucleic Acid) library for detecting cholestatic jaundice pathogenic genes by virtue of a high-throughput sequencing technology and application thereof and in particular relates to a super-multiplet PCR primer which can cover the exon and adjacent areas of the genes according to 60 cholestatic jaundice pathogenic genes. The genome DNA of the sample is subjected to super-multiplet PCR amplification, the amplification product is sequenced by utilizing the high-throughput sequencing technology, the pathogenic mutation is searched, the genetic etiology of the cholestatic jaundice is clear, and a theoretical basis of genetics and molecular biology is provided for clinical diagnosis. The DNA library has the characteristics of accuracy, flexibility, rapidness and low cost. Moreover, according to the detection area of 60 genes, 15 common cholestatic genetic defects can be detected, and the DNA library has significance and clinical values on differential diagnosis of the cholestatic jaundice.

The invention discloses a site fast detection method for copper, zinc, lead and cadmium as heavy metals in seawater, and belongs to the technical field of environment monitoring. A conducting carbon black-ionic liquid paste electrode as a work electrode, Ag / AgCl as a reference electrode and platinum filament or glass carbon as a counter electrode are assembled to form an electrochemical sensor. The concentrations of ionic copper, zinc, lead and cadmium in seawater are respectively determined by adopting square wave anodic stripping voltammetry; and the site fast detection method has the advantages of high sensitivity, favorable repeatability, simple and convenient operation, low expense, quick response, accurate quantification, low requirement on the environment condition and the like, and can be used for site monitoring of offshore pollution and conventional ocean site investigation along with ships.

The invention relates to a genetic detection method, in particular to a quantitative detection method for unusual genetic mutation. The quantitative detection method for unusual genetic mutation comprises the following steps: firstly, corresponding primer sequences are designed and prepared according to the unusual genetic mutation required for quantitative detection, wherein the 3' end of a primer is provided with a mutant site - special nucleotide; except for the final site of the nucleotide, all the other sequences can be synthesized by commercial means; and the final site of the nucleotide is modified nucleotide, so as to make the primer incapable of extending in the general PCR reaction; and the modified nucleotide is added to the tail of the primer; and secondly, in a reaction system which contains special DNA polymerase and pyrophosphate, the primer designed and prepared in the first step is adopted for amplifying the unusual genetic mutation for quantitative detection, and a real-time fluorescent PCR instrument is utilized for quantitative detection; and the quantitative detection information of the unusual genetic mutation can be acquired through analysis of an amplifying curve recorded by the real-time fluorescent PCR instrument.

The invention discloses a coupling refractive index meter for an evanescent field among optical fibers and a detecting method of the coupling refractive index meter. The coupling refractive index meter comprises a light source, an optical fiber sensor probe, an optical fiber coupler / circulator, a first photoelectric detector, a second photoelectric detector and a data collecting and processing module, wherein the optical fiber sensor probe comprises an optical fiber engraved with inclined optical fiber gratings and a D-type optical fiber which are parallelly arranged and tightly closed; the light source is connected with one end of the optical fiber engraved with the inclined optical fiber gratings through the optical fiber coupler / circulator; the optical fiber engraved with the inclined optical fiber gratings is connected with the input end of the second photoelectric detector through the optical fiber coupler / circulator; one end of the D-type optical fiber is connected with the input end of the first photoelectric detector through a single mode optical fiber; one end, connected with the optical fiber coupler / circulator, of the optical fiber engraved with the inclined optical fiber gratings and one end, connected with the first photoelectric detector, of the D-type optical fiber are on the same side; the first photoelectric detector and the second photoelectric detector are separately connected with the data collecting and processing module. The coupling refractive index meter has the advantage of being higher in refractive index measuring accuracy.

The invention provides an object detection method based on depth reinforcement learning, and belongs to the mode identification technical field and active object detection technical field; the methodcomprises the following steps: firstly building a depth reinforcement learning nerve network; carrying out multi object detection tests for a robot, obtaining training data to train the nerve network,thus obtaining a trained nerve network; in the usage phase, the robot obtains a present time image and an envelope box of a to-be-detected object in the image, and inputs same into the trained nervenetwork; the network outputs a motion to-be-executed by the robot in the next moment; the robot executes the motion to obtain a new present time envelope box, and uses an identification function for determination; if the identification credibility of the to-be-detected object in the envelope box is higher than a set identification threshold, the object detection succeeds. The method uses the reinforcement learning technology to control the robot motions, and uses the robot visual angle changes to obtain better observation images, thus obtaining a better object detection result.

The invention provides a multifunctional double-channel welding line ultrasonic testing scanner. The multifunctional double-channel welding line ultrasonic testing scanner comprises a whole sliding main supporting rod, a filter, a junction box, a handle, a digital encoder, a magnetic wheel set, two corresponding TOFD (Time Of Flight Diffraction) probe systems and two corresponding creeping wave probe supporting systems. The scanner has the advantages that firstly, the distance between transverse magnetic wheels is small to be applicable to adjusting a large-range curvature so that the scanner can be used for detecting an elbow welding line with a small diameter; secondly, after the upper-lower displacement of a probe bracket is increased, the scanner can be applicable to scanning butt welding lines of an elbow and large and small heads; thirdly, a probe wedge block is reduced so as to be more applicable to detecting an elbow welding opening; fourthly, a slope climbing probe is mounted so as to carry out once scanning on the dead zone of a scanning surface and improve the working efficiency.

The invention discloses a method for constructing an alphabet compression based extend finite automaton (ACFA). The method comprises the following steps of: checking and testing in the alphabet compression based extend finite automaton by selecting a proper rule set; reading in the rule set, constructing a finite automaton by the method for constructing the alphabet compression based extend finite automaton and generating a state set at the same time; and dividing the alphabet of each state set by a method for matching the alphabet compression based extend finite automaton and compressing a migration table of the alphabet. Compared with an extend finite automaton (XFA), the migration edge of the ACFA is reduced by 95.6 percent, the storage space of the ACFA is reduced by 90.7 percent, and the matching time of the ACFA is only increased by 23.6 percent; therefore, the ACFA is a quick regular expression matching method with efficient storing performance. Compared with the conventional regular expression matching method, the ACFA is particularly applicable for detection of a high-speed depth packet.

A displacement detecting apparatus of an electromagnetic actuator includes an electromagnetic actuator having a movable core, a drive coil and a detection coil, a drive portion for supplying a drive current to the drive coil on the basis of a pulse width modulation signal, and a displacement detecting portion to which an output voltage of the detection coil is inputted, for outputting a displacement detection signal, wherein the displacement detecting portion has a sampling-signal generating portion for generating a sampling signal in synchronism with the pulse width modulation signal, and a synchronous sampling portion for outputting the displacement detection signal by sampling the output voltage in synchronism with the sampling signal. Based on the displacement detecting apparatus, the electromagnetic actuator in a traditional structure is added with the detection coil so as to ensure high design freedom and compact structure of the displacement detecting apparatus.

The automatic analysis of COD in sea water includes flowing injection analysis and spectrophotometric detection. After the oxidizing liquid enters the analysis and detection flow channel, it is pushed by the pushing liquid into the heating reactor for mixing with acidifying liquid into the flow channel, and the mixture solution is pushed to mix and react with reducing-displaying liquid into the flow channel to produce base line to be measured. The standard sample or test sample entering the analysis and detection flow channel is pushed to mix with the oxidizing liquid and heating oxidized, reacted with the acidifying liquid, and the mixture liquid is pushed to mix and react with the reducing-displaying liquid to produce spectrogram to be drawn. By means of the method and instrument, sea water may be automatic detected in COD accurately and reliably.

A mass calibrator ionization and introduction device for a mass spectrometer, comprising at least a first ion source for the mass calibrator ionization (1); at least a second ion source for the ionization analysis (2); independent vacuum interface devices (4) corresponding to respective ion sources; and at least an ion guiding area (51), for guiding the mass calibrator ions and the analyte ions into a quality detection analysis area (52) connected to the ion guiding area (51); wherein the first ion source (1) is in a subatmospheric environment, and the second ion source (2) is in an atmospheric environment. A low pressure environment can more effectively enhance the ionization efficiency and the ion transmission efficiency compared with an atmospheric pressure environment; ensure the mass spectrum signal strength of the mass calibrator and reduce its amount in order to reduce the contamination caused by the mass calibrator to the subsequent stage of the mass spectrum; the respective independent ion sources and vacuum interface devices of mass calibrator and the analyte also avoid the interference caused by the mass calibrator to the analyte and the contamination of the analyte vacuum interface device.

The optical fiber sensor consists of laser light source, Y-type fiber coupler, sensor probe comprising light transmitting fiber bundle and microscopic objective, reference fiber and receiving fiber array and photoelectronic receiver. Its high transmitting fiber bundle consists of nine fibers in a spoke array mode; the Y-type fiber coupler is connected to the central fiber as the common emitting and receiving light channel and the other eight receiving and reference fibers are connected with photoelectronic receiver via receiving fiber array. By means of special signal extraction, roughness, size, shape and information may be measured separately without contact and without beint affected by the fluctuation in the light source and the reflectivity change of the measured surface.

The invention discloses a surface crack detection method and system, and relates to the technical field. The method comprises the following steps of collecting a crack image, wherein the crack image comprises a crossing point of a plurality of cracks and a calculation standard used for calculating actual length represented by each pixel point; extracting a plurality of local regions based on the crossing point, wherein each local region comprises a crack connected with the crossing point; and obtaining areas and perimeters of the cracks in the local regions to calculate average width of the cracks. The detection system comprises an image collection apparatus, an extraction module and a calculation module. According to the method and the system, the cracks are classified based on the crossing point of the cracks, each obtained local region comprises the crack connected with the crossing point, and the same calculation method is adopted for the local regions to obtain size data of the cracks, so that the crack classification repeatability is good, the calculation amount is reduced, and the calculation time and cost are shortened and reduced; and the method and the system are especially suitable for detection of complex surface cracks staggered and distributed irregularly.

The invention relates to a hydrogen peroxide sensor, a preparation method thereof, and application of the hydrogen peroxide sensor in detection of unicellular hydrogen peroxide. The hydrogen peroxide sensor is prepared by loading platinum nano-particles on multi-wall carbon nanotubes by ethylene glycol reduction method and then preparing platinum nano-particle / multi-wall carbon nanotube dispersed liquid therefrom, and finally, dipping a platinum electrode with the dispersed nano-particles / multi-wall carbon nanotubes. The sensor provided by the invention is high in sensitivity, low in detection limit and wide in linear range; the sensor is taken as a detector of capillary electrophoresis; and quantitative determination of H2O2 in single cells is realized.