50results about How to "Good data reproducibility" patented technology

The invention provides a double-column rotary corrosive-wear testing machine, comprising a testing stand, which is provided with two columns, wherein a crossbeam is arranged on the columns and a through hole is formed in the center of the crossbeam; a crossbeam elevating and driving mechanism, which is arranged on the test stand and connected with the crossbeam; a testing drum, which is arranged on the center of the test stand, wherein an annular temperature control / cooling pipeline is arranged in the lower part of the testing drum; a transmission shaft, which passes through and is arranged in the through hole in the crossbeam; a sample clamping disc, which is fixed at the lower end of the transmission shaft, wherein the upper end surface of the sample clamping disc is provided with an annular groove, and the outer sides of the annular groove are provided with installation through holes; working electrodes, i.e., to-be-tested samples, which are inserted into the installation through holes; an auxiliary electrode, i.e., an annular platinum wire, which is arranged in the annular groove of the sample clamping disc; reference electrodes, which are uniformly distributed on the sample clamping disc at positions corresponding to the working electrodes; and a dynamic connection pool, which comprises annular dovetail cups, wherein the annular dovetail cups sleeve the upper part of the transmission shaft, leading-out circular rings are arranged at the bottom of the inner sides of the annular dovetail cups, the outer sides of the leading-out circular rings are provided with wiring copper columns penetrating the bottoms of the cups, the interior of each annular dovetail cup is provided with an electric needle, the lower ends of the electric needles are certain distance away from the leading-out circular rings, and the working electrodes, the auxiliary electrode and the reference electrodes are connected with the dynamic connection pool through leads.

The invention relates to a method for testing the surface energy of an asphalt material. The method comprises the following steps: (A) preparing a glass sheet for testing; (B) preparing an asphalt sample; (C) selecting and checking a testing solution, and performing subsequent testing after the checking is passed; and (D) opening testing software, regulating a sample table, starting testing, recording testing data, and calculating a contact angle value. The sample is treated prior to the testing under the conditions that the heat insulation treatment temperature is 120 DEG C, the heat insulation treatment time is 2 hours, the maintenance time is 2 days at the temperature of 25 DEG C and the testing time in a testing process is controlled to be 20-60 seconds. The method for testing the surface energy of the asphalt material, provided by the invention, has the advantages of simple previous preparation process, controllable testing conditions, short testing time, simplicity in data processing, low testing variable coefficient and high data reproducibility. The method lays a testing foundation for accurately acquiring surface energy parameters of the asphalt material.

The invention relates to a method for testing surface energy of an aggregate. The method comprises the following steps: A. dividing an aggregate obtained from a quarry into samples with sizes being 5cm*5cm*1cm by a water sawing method; B. polishing the samples to obtain a smooth and flat surface; C. performing surface cleaning to the tested sample; and D. opening testing software, adjusting a sample table and performing the test. The early preparation process in the testing method adopted by the invention is simple, the testing condition is easy to control, the testing time is short, the data processing is simple, the variable coefficient of the testing result is low, and the data reproducibility is good. The testing method lays the foundation for accurately acquiring the surface energy parameter.

The column type helical spring is made from Inconal X-750 (GH4145) alloy wire. The procedures for manufacturing the spring are as following: wrapping the semi-finished product of long coil of spring:cutting the long coil to single springs; washing the springs; carrying out the solid solution heat treatment; cutting end and adjusting the pitch, and carrying out the aging heat treatment. With the tests of rigidity and permangnet deformation in high temperature being completed, the finished springs are obtained. The device for testing rigidity of the spring includes the worktable, the electric stove and dial gauge etc. Testing indicates the performances of the spring: when the working temperature at 550 degree.C, the service life > or =25000 hr. The spring is easy to be assembled in the vapor lock.

A photocatalysis performance estimating method for nano powder material, belonging to the estimating technical field of material chemical properties, includes seven steps in operation as setting up aphotocatalysis device, preparing a photocatalysis degradation solution, degradation reaction of photocatalysis, centrifugal ization, taking the solution, determining the unabsorbance Ar, and estimating the grade of photocatlaysis performance of the nano powder material. Through making the estimated standard of photocatalysis, the quality grade for photocatalyst of the nano powder material can be determined and it provides the direct basis for the use of nanopowder material. The method only uses very simple instrument, but also is quick in detection so that it has a very good prospect for the application to environmental protection and food freshness-keeping field of nano powder material.

The invention discloses a measurement method and device of heat conductivity coefficients. The method comprises the following steps that 1, time difference needed by a group of standard samples with known heat conductivity coefficients to reach predetermined temperature difference in a heating process is measured, and according to the relationship between the measured time difference of the standard samples and the corresponding heat conductivity coefficients, a time difference-heat conductivity coefficient standard curve is built; 2, time difference needed by a sample to be measured to reachthe predetermined temperature difference in a heating process is measured, and according to the time difference-heat conductivity coefficient standard curve, the heat conductivity coefficient of the sample to be measured is converted. The structures of the standard samples and the sample to be measured are the same; the heating mode for measuring the time difference needed by the standard samplesand the sample to be measured to reach the predetermined temperature difference comprises the steps that one end of each standard sample or the sample to be measured is heated through a heat resource,and the temperature change of the other end of the standard sample or the sample to be measured is measured. By means of the method, the heat conductivity coefficients of material and a product can be fast measured at low costs.

The invention discloses an automatic water quality detection device. The automatic water quality detection device comprises a quantitative sampling pump, a water sample detection tank, a sample chamber, a detection chamber, a quantitative liquid feeding device, a microscale continuous liquid feeding device, a micro-flow meter, a treatment module, a power supply module and a controller. The water sample detection tank is fixed in the sample chamber, one side of the sample chamber is provided with a light emitting chamber and the water sample detection tank is connected to the quantitative sampling pump through a pipe. The automatic water quality detection device can eliminate the analysis error between different analysts, improve the analysis efficiency, realize fast detection and early warning of key detection indexes such as calcium hardness and total alkalinity of the circulating cooling water system, remind to reasonably control the concentration multiple during the circulating water system operation, prevent unnecessary discharge of pollutants and save water resources. The device can effectively guide the stable feeding of a water treatment agent and prevent fluctuation of theconcentration of the water treatment agent. The device realizes continuous analysis, the operating environment is safe, the data is reliable, the error is small, and the analysis data can also be transmitted in real time.

The invention belongs to the technical field of energy exploitation, particularly relates to a gas-based trace chemistry tracer, and further relates to a method for using the gas-based trace chemistrytracer to measure the gas production contribution amount of various sections of a gas well. The gas-based trace chemistry tracer is a fluorocarbon of which the solubility in water is smaller than 0.001 g at the temperature of 50-150 DEG C, and is particularly perfluor alkane, perfluorocycloalkane, perfluor aromatic hydrocarbon, perfluoroalkyl acid or perfluoroalkyl group ethylene vinyl acetate. The gas-based trace chemistry tracer is radiationless and poisonless; the tracer does not react with other elements, and the biological stability and the chemical stability are high; the dosage is small and is 1 / 1,000,000 or below; the maximal borne temperature is 360 DEG C, and the maximal borne pressure is 25 Kpsi; the tracer is only dissolved in specific oil gas, and is not dissolved in any medium of stratums and shafts; a gas chromatograph is adopted for concentration detection, the speed is high, the sensitivity is high, the data reproducibility is good, and the accuracy is high.

The invention relates to a method for evaluating smoke suppression performance of flame retardant asphalt mixture, belonging to the field of road engineering. The method comprises the following specific steps of: manufacturing a track test piece of flame retardant asphalt mixture with the standard size of 300 mm*300 mm*50 mm according to the T0703-1993 wheel grinding method in Test Instructions of Road Engineering Asphalt and Asphalt Mixture (JTJ052-2000); after curing the test piece, demoulding to carry out a direct combustion simulation test, and photographing a combustion smoke picture of the test piece; processing the photographed combustion image picture, dividing the picture into a plurality of small grids, and circling combustion smoke in the picture; calculating the area of smoke through a formula according to the processed picture, and evaluating the smoke suppression performance of the flame retardant asphalt mixture according to the area of the smoke. The smoke suppression performance of the flame retardant asphalt mixture is evaluated by using the method; the disadvantages of insufficient test equipment, expensive cost, high operation difficulty and the like are overcome; furthermore, the relevance between the test result and the smoke suppression performance of the flame retardant asphalt mixture is good.

The invention relates to a standard sample for analyzing 82B wire rod sorbite content and a preparation method of the standard sample. The preparation method comprises the following steps: 1) ironmaking-refining in a converter-refining outside the furnace-adjusting chemical elements-continuously casting to obtain a blank, wherein the weight percentage of the chemical element is ensured to be within the range of the weight percentage of the elements in the standard sample during smelting; 2) heating casting blank, roughly rolling though a high-speed wire mill, intermediately rolling finely rolling, spinning and cooling under control of a Stelmor air cooling line; 3) sampling; and 4) cutting the base material of the standard sample into a plurality of small sections with length of 5 to 10mm; embedding into a metallographic specimen through embedding materials such as bakelite powder; carrying out polishing etching; and measuring the sorbite content; and then valuing; and finally packaging to obtain the standard sample. Such standard sample can be effectively applied to calibrating a quantitative measuring condition of the wire rod sorbite content through an instrument analyzing instrument, so that the accuracy in quantitative measuring of the sorbite content is effectively reduced, and the analyzing error is removed; and the measuring result has relatively high traceability and data reproducibility; and the preparation method is simple and easy to operate.

The invention relates to the field of medicinal chemistry and in particular discloses a method for screening an ALKBH5 small molecule inhibitor by utilizing an FDH (Familial Dysalbuminemic Hyperthyroxinemia) enzyme-linked fluorescent principle and an Alpha Screen technology. The method comprises the following steps: successfully constructing and carrying out prokaryotic expression and purificationto obtain ALKBH5 recombinant protein with relatively high purity, and synthesizing m6A modified ssRNA (single-stranded Ribonucleic Acid) used as a substrate; detecting the activity of the ALKBH5 by utilizing the FDH enzyme-linked fluorescent principle and the Alpha Screen technology and establishing a small molecule inhibitor screening platform. An FDH enzyme-linked fluorescent reaction system isstable and a utilized reagent is cheap and easy to obtain and has a low background; an Alpha Screen reaction system is stable and interference, caused by a sample, on the system is very small; the Alpha Screen reaction system has low false positives and false negatives, can be used for removing the interference of spontaneous fluorescence of a natural product and has high sensitivity; the miniaturization is easy to realize by the two methods and the two methods have high throughput and are mutually complemented; the screening of the ALKBH5 small molecule inhibitor can be realized.

The invention belongs to the technical field of a test for detecting the nutrient releasing rate of a controlled-release fertilizer, relates to a device and method for rapidly detecting the nutrient releasing rate of the controlled-release fertilizer based on an electric conductivity method, and particularly relates to a device and method for rapidly detecting the still water dissolution rate and the accumulation releasing rate of the controlled-release fertilizer based on the electric conductivity method. The device comprises a bracket, a water feeding device, a glass container, a digital display electric conductivity instrument, an electronic stirrer, a PCL control system for controlling detection steps and the like. With the adoption of the special device, an uneven concentration distribution phenomenon caused by external temperature fluctuation and long-time standing of a solution to be detected is avoided; and the detected electric conductivity value of a nutrient solution is relatively reliable and accurate, and meanwhile, the operation time is greatly shortened.

The invention discloses a double-sided coated plate film weight measuring method. It includes the following steps: using white cleaning cloth or sand paper to scrape off the sample single face film to expose the base material; using solvent permeated sand cloth to clean the film; dying the sample surface; clicking out the sample with certain area; using unmixed solvent to clean the two sides of the sample; drying; weighing on the analytical balance; dipping into inorganic solvent to remove another coating; taking out to wash and dry; using analytical balance to weight; dividing the different value of the two-time weighting by sample area to gain unit area coating film weight. This method is fast, exact, and has small error.

The invention relates to a self-adapting contact probe set, which is characterized in that four probe assemblies with the surrounding centers distributed in 90 degrees are included, wherein each of the probe assemblies comprises probe components and a moving device, and the probe components are arranged on the moving device which can move forward to the center or reset under dynamic function. Each of the probe components comprises a base body, a spring and a probe; wherein the base body is provide with two shoulder holes, and each shoulder hole is internally provided with a probe and a spring. Under the function of the spring, one end of the probe extends out of the shoulder hole. The self-adapting contact probe set can not only finish sample measurement at one time and make sure that the contact force of each set of probe meets standard requirements, but also avoid the change of the equipotential surface of the sample in the rotating detection process. In addition, the self-adapting contact probe set is characterized by convenient use, high measurement accuracy, good data reproduction quality, low requirement of sample processing accuracy, etc.

The invention discloses a sample mold used in aluminum alloy spectral analysis, comprising a bottom mold holder, as well as a left mold holder and a right mold holder which are hinged on the bottom mold holder; an injection mouth and a mold cavity are formed at the position where the butt seam at the corresponding side of the left mold holder and the right mold holder is taken as the center; a bottom mold inlay piece is arranged at the upper part of the bottom mold holder and at the position corresponding to the mold cavity; a left mold inlay piece and a right mold inlay piece are respectively arranged around the mold cavity in the left mold holder and the right mold holder, so that the mold cavity is formed by the space structured by the bottom mold inlay piece, the left mold inlay piece and the right mold inlay piece; the bottom mold inlay piece, the left mold inlay piece and the right mold inlay piece are made of the material with the melting point higher than the specimen alloy and the heat transfer system higher than the bottom mold holder, the left mold holder and the right mold holder. The sample mold can improve the sample composition segregation in aluminum alloy spectral analysis so as to enhance the representativeness of the sample analysis surface and the data reproducibility.

The invention discloses a method for measuring the content of suspension in the water extract of tobacco raw materials. The method comprises the following steps: (1) fetching the water extract of tobacco raw materials during the production process of paper-making reconstituted tobacco, adopting a Karl-Fischer method to measure the extract water content (Cw); (2) adopting a Brix degree meter to measure the Brix degree value (Sc) of the water extract; (3) calculating the content (Css) of suspension in water extract of tobacco raw materials according to a formula: Css(%)=100-Cw-Sc. The provided method has the advantages of short measuring time, high accuracy, high precision, good data repeatability, and high sensitivity, can be used to optimize the extraction, concentration, blending, and using technologies of tobacco raw material water extract, and is capable of improving the purity and quality of water extract.

The measuring process of plate coating metal weight includes clean sample, stoving, weighing, dissolving while the dissolving curve being displayed in computer until the curve exhibiting inflection point, taking out sample, washing, stoving, weighing to obtain the weight difference before and after dissolving, and calculating the weight unit area or coating thickenss. The said process is superior to traditional chemical dissolving process in that the Coulomb dissoving process makes it possible to obtain accurate dissolving end time. In case of composite coating or possessing middle alloy layer, the said process can the thickness of each layer.

The invention discloses a sensor for testing the deformation degree of a mining coal seam floor. The sensor comprises a steel pipe skeleton, strain rosettes and an epoxy resin layer. Four strain rosettes are arranged and are pasted on the upper part and the lower part of the outer wall of the steel pipe skeleton respectively at an included angle of 90 degrees; each strain rosette is formed by twostrain gauges perpendicular to each other; each strain gauge includes a substrate formed by bonding of an upper thin piece and a lower thin piece and a sensitive grid is arranged between the upper thin piece and the lower thin piece; two wiring terminals are arranged at one end of each substrate and are connected with the sensitive grid by tin-plated copper wires; and an adhesive is arranged on the outer surface of the substrate, one side of the adhesive is adhered to the outer surface of the substrate and a piece of oily gummed paper is pasted on the other side. The outer wall of the steel pipe skeleton is coated with an epoxy resin by means of pouring. According to the invention, with the strain gauges, a phenomenon that the strain gauges fail to work because of lead dragging during theconnection process is prevented; the strain gauges can work normally and effectively in various severe environments. The data processing is simple; and the tested data reproducibility and comparativeproperty are good.

The invention discloses an oil and gas pipeline corrosion online monitor, which measures the corrosion of an oil and gas pipeline by an electric-resistivity method. The monitor comprises a resistance probe, a measurement circuit and a measurement data processing unit, wherein the resistance probe (1) comprises waterproof jacks (12), a sealing screw thread (13) and a probe shell (14); the upper part of the sealing screw thread (13) is connected with the waterproof jacks (12), while a lower part is connected with the probe shell (14) made from stainless steel; a built-in sensing element (15), which is a reference resistor Rf, and a built-in thermal resistor Rt (10) are arranged in the probe shell (14), and are positioned in an identical temperature environment; an exposed sensing element (16), which is a measured resistor Rx, is arranged out of the probe shell (14), and is directly exposed in a corrosion environment in the pipeline; and the built-in sensing element (15) and the exposed sensing element (16) are made from an identical material and have an identical temperature coefficient. The resistance corrosion monitoring device of the invention has the characteristics of quick response, continuous testing capacity, the capacity of sensitively detecting the small change of a corrosion state in the pipeline, high reliability and high data reproducibility.

An apparatus and a test method for detecting surface permeability and maintenance effect of concrete. The invention relates to a nondestructive testing method for detecting surface permeability and maintenance effect of concrete quickly in situ. The apparatus is composed of a connecting flange, a water saturation device, a negative pressure suction disk, a moisture absorption device, a moisture absorption medium, a vacuum pump, a vacuum display apparatus and a stop valve. A principle for detecting the surface permeability of concrete with the apparatus includes: vaccumizing the surface of concrete, which has been saturated and surface-dried; absorbing the moisture from the surface of the concrete by means of the moisture absorption device and moisture absorption medium; and characterizingthe surface permeability of the concrete by the ratio of mass difference of the moisture absorption medium before and after vacuumizing to the product of vacuumizing time and actual area of concrete in the suction disk. The apparatus and test method are simple in operation, can achieve quick, quantitative and nondestructive detection on the surface permeability of entity components or structures in situ, and are suitable for nondestructive detection on the surface permeability of concrete and evaluation on the maintenance effect of concrete.

The invention discloses a method for screening uric acid-lowering small molecule compounds for promoting uric acid excretion based on a patch clamp technology. The method comprises the following stepsof: constructing recombinant plasmids for expressing a GLUT9 gene; instantaneously transfecting the recombinant plasmids to an HEK293T cell; after 18-24 hours, recording the change of a current whenthe GLUT9 cells are expressed to transport uric acid by utilizing a patch clamp technology; and verifying the reliability of the model through positive drugs, namely benzbromarone and probenecid, andnegative drugs, namely RDEA3170 and allopurinol. The method is simple, convenient and rapid to operate; the result is stable, reliable and good in reproducibility; compared with an existing method fordetecting isotope uptake by using xenopus oocytes, the method has the advantages that the consumed time is shorter, the cost is lower, and high-throughput screening of the GLUT9 inhibitor can be achieved.

The invention belongs to the technical field of taste detection, and particularly relates to a heterogeneous solution sweetness detection liquid, application thereof and a detection method. The detection liquid comprises: 0.01-10wt% of ethanol and the balance a potassium chloride aqueous solution, and the wt% adopts the mass of the potassium chloride aqueous solution as a reference. The inventionalso discloses application and a detection method of the detection liquid. The heterogeneous solution sweetness detection liquid can be used for effectively, quickly, accurately and objectively evaluating the sweetness strength of beverages with low sugar content and beverages obtained by dissolving insoluble fragrant and sweet components in a sucrose solution. The method has the characteristics of standard operation, rapid detection and accurate data. Through application of the invention, different beverage sweetness characteristic graphs can be established, especially heterogeneous fruit juice beverages, and data support is provided for defining of the taste characteristics of different products, quantitative and quick identification and quality evaluation.

The invention provides a lever type chain pressurized device and a lever type chain pressurized method for measuring climbing force of an insect or a small animal. The lever type chain pressurized device for measuring climbing force of an animal is characterized by comprising a lever mechanism, a balanced pressurizing mechanism, a movable pressurizing mechanism, a charge coupled device (CCD) shooting system for observing the animal, and an observation desk for accommodating the tested animal, wherein one end of the lever mechanism is connected with the animal, and the other end of the lever mechanism is connected with the balanced pressurizing mechanism; and the balanced pressurizing mechanism is connected with the movable pressurizing mechanism which is used for changing the arm of force of the lever mechanism. The device is ingenious, practical and high in adaptability, stably applies force, is low in interference, wide in variation range and accurate, digital and automatic in measurement and can be used for measuring planar climbing force of the insect.

The invention discloses a testing method of the pulling stress of oriented silicon-steel coatings, which pertains to a technical field of oriented electric steel testing. The testing method comprises the testing steps of : sample preparing: one side of the oriented silicon-steel coating is protected by a special paint and the other side thereof is dissolved by a solution prepared by hydrogen fluoride, hydrochloric acid and water; the protective paint is removed by acetone as the organic solvent; the special paint relates to shellac and the sample is the oriented silicon-steel piece; testing: the pulling stress which arises between the coating and the silicon-steel piece is calculated according to the bending degree of the steel piece. The testing method has the advantage of low requirements for devices or equipment and is easy to realize. The chemical performance of the testing method is stable when being applied under different weather conditions, thereby shortening the experiment cycle, lowering the experiment cost, ensuring easy operation of testing, additionally, ensuring precise test results and good data repeatability.

The invention discloses a pretreatment method for pyrolysis analysis of flavor used for extract type tobacco. The method comprises following steps of freezing the to-be-analyzed flavor used for extract type tobacco; drying the frozen flavor in a vacuum manner; smashing the dried flavor into powder, weighing after the flavor powder is mixed evenly and carrying out sample packing for a hot filamenttype pyrolysis instrument. As the ultra-low temperature freezing treatment is adopted by the provided pretreatment method, compound components with low boiling point or heat sensitivity in the flavorsample can be reserved to the greatest extent; and the method has simple steps, is easy to operate and has good data reproducibility and wide range of application.

The invention relates to a self-adapting contact probe set, which is characterized in that four probe assemblies with the surrounding centers distributed in 90 degrees are included, wherein each of the probe assemblies comprises probe components and a moving device, and the probe components are arranged on the moving device which can move forward to the center or reset under dynamic function. Each of the probe components comprises a base body, a spring and a probe; wherein the base body is provide with two shoulder holes, and each shoulder hole is internally provided with a probe and a spring. Under the function of the spring, one end of the probe extends out of the shoulder hole. The self-adapting contact probe set can not only finish sample measurement at one time and make sure that thecontact force of each set of probe meets standard requirements, but also avoid the change of the equipotential surface of the sample in the rotating detection process. In addition, the self-adapting contact probe set is characterized by convenient use, high measurement accuracy, good data reproduction quality, low requirement of sample processing accuracy, etc.

The measuring process of plate coating metal weight includes clean sample, stoving, weighing, dissolving while the dissolving curve being displayed in computer until the curve exhibiting inflection point, taking out sample, washing, stoving, weighing to obtain the weight difference before and after dissolving, and calculating the weight unit area or coating thickenss. The said process is superior to traditional chemical dissolving process in that the Coulomb dissoving process makes it possible to obtain accurate dissolving end time. In case of composite coating or possessing middle alloy layer, the said process can the thickness of each layer.