31results about How to "Conducive to accurate determination" patented technology

A sensing device for sensing a condition of a plasma processing system component. The sensing device includes a main body configured to contain a material, an emitter contained in the main body and configured to emit light when exposed to a plasma, and a mating feature connected to the main body and configured to be mated with a receiving feature of an object in the plasma processing system such that the emitter material is exposed to a processing environment of the plasma processing system. When the emitter material is exposed to a plasma, the light emitted from the emitter can be monitored to determine at least one of material accumulation on the system component and erosion of the system component.

The invention provides a corrosive agent for detecting a shot-blasted layer on an austenitic stainless steel surface and a using method of the corrosive agent. The corrosive agent is prepared from, by volume, 25-31% of hydrochloric acid, 26-28% of glycerol, 12-16% of nitric acid and 25-35% of a picric acid ethanol solution. By means of the advantages that a metallographic phase is rapidly, visually, easily and conveniently displayed, the chemical corrosive agent which is easy and convenient to use and applicable to daily inspection is developed, and the corrosive agent intensively corrodes the region of a shot-blasted hardened layer on the inner surface and does not intensively corrode a base body which does not deform. By means of the advantages of a chemical reaction, the appearance of the region of the shot-blasted hardened layer of inner stainless steel surface can be clearly and completely displayed under illumination of perpendicular light of a microscope, the stainless shot-blasted layer is deep measured conveniently and accurately, and the good practical value for control over the shot-blasted quality inside austenitic stainless steel for a super-(super)-critical boiler is achieved.

The invention discloses a supporting structure used for measuring parameter influence characteristics of an extrusion oil film damper. A supporting seat and an independent support are fixed to a base. A disc spring is located between the bottom surface of the independent support and the upper surface of the base. One end of a squirrel cage type elastic support is embedded in the supporting seat, and the other end face of the squirrel cage type elastic support is embedded in one end face of a bearing seat. An oil film outer ring is arranged on the bearing seat in a sleeving manner, and one end of the oil film outer ring is embedded in the inner surface of the independent support. An oil film layer is arranged between the bearing seat and the oil film outer ring. Position adjustment of the oil film outer ring is conducted through the independent support, and the purpose of changing parameters of the damper is achieved. After the supporting structure used for measuring the parameter influence characteristics of the extrusion oil film damper is introduced, under the condition that the parameters of a rotor are not changed, the structure parameters of the extrusion oil film damper are changed only in the manner of changing the independent support. The supporting structure is simple and convenient to install, and the influences of the structure parameters on the vibration damping performance of the extrusion oil film damper can be measured more accurately.

The invention discloses a method for displaying P91 and P92 ferrite heat-resistant steel original austenite crystal boundary. The P91 and P92 ferrite heat-resistant steel original austenite crystal boundary can be clearly and completely displayed through adopting an aqueous sulfuric acid solution electrolytic etching and concentrated nitric acid solution electrolytic etching combination two-step electrolytic etching technology in order to accurately determine the austenite grain size. The method has the advantages of simple, convenient, fast and safe operation, easy control of the etching process, stable display effect and good reappearance.

The invention relates to a method for rapid determination of aluminum content in a honey product; the method is an ultraviolet-visible spectrophotometry method mainly based on using alizarin red S as a complexing reagent; and the method can shorten the sample determination time, saves resources, is good in reproducibility and stability and high in recovery rate, and can meet the practical requirements of laboratory determination.

The invention discloses an in-situ whole root soil reinforcement effect testing instrument. The testing instrument structurally comprises a displacement detection device, a horizontal moving mechanism and a direct shearing box used for planting plant samples. The direct shearing box comprises an upper half box body (11) and a lower half box body (12). A horizontal guide rail (13) is arranged between the upper half box body (11) and the lower half box body (12). The displacement detection device comprises a displacement sensor (31). The displacement sensor (31) is used for detecting horizontal displacement of the upper half box body (11) relative to the lower half box body (12). The horizontal moving mechanism drives the upper half box body (11) to move close to or away from the displacement sensor (31) along the horizontal guide rail (13) and detects force of the horizontal moving mechanism on the upper half box body (11). The soil shear strength enhancing effect of plant root systems on the original growth conditions can be conveniently and accurately tested, and testing of the plant soil reinforcement effect is more precise.

The invention discloses a method for rapidly determining a trypsin and aprotinin combination mechanism, which is designed for studying a quenching mechanism of aprotinin to trypsin the binding constant K and the binding-site number n of aprotinin and trypsin by using a fluorescent spectrometry including fluorescence quenching and synchronous fluorescence. The method comprises the following steps: selecting a mixture of trypsin and aprotinin in a suitable proportion; at a temperature of 28-37 DEG C, and under corresponding excitation wavelengths, determining the quenching effects of aprotinin with different concentrations on trypsin; and in combination with a Stern-Volmer curve, further determining the binding constant K and binding-site number n of aprotinin and trypsin, and then obtaining an acting mechanism of aprotinin and trypsin. According to the method, a convenient, accurate and effective method can be provided for studying the mutual action of inhibitors and other micromolecular quenchers as well as proteins from a molecular level.

A method for determining finely-grinded mineral slag original content in hardened concrete belongs to the technical field of building material tests. Fine mineral slag is applied to cement concrete in a large amount, but if the usage amount of the fine mineral slag is too large, concrete easily has the quality problems such as bad workability, reduced strength, easy shrinkage crack, insufficient durability and the like. The invention aims at providing a simple and practicable test method capable of conveniently accurately determining the content of finely-grinded mineral slag in hardened concrete original components. The method possesses two innovation points: firstly, a hydrochloric acid (0.5 M HCl) dissolution process is employed for ensuring that sand content in a concrete sample of the coarse aggregate is removed, and thus the content of the fine aggregate in the hardened concrete original components is effectively determined; and the method is high in measure accuracy and strong in operationality. Secondly, based on mass conservation of CaO content in cement and finely-grinded mineral slag, a mathematic calculation method is provided for determining the doping amount of original finely-grinded mineral slag in the concrete, and the derivation process is precise and the calculation result is accurate.

The invention provides a helium medium valve sealing performance test device and a test method thereof. The device comprises a high-pressure helium cylinder and a high-pressure nitrogen cylinder, wherein the outlet ends of the high-pressure helium cylinder and the high-pressure nitrogen cylinder are respectively connected with the inlet ends of a first needle type adjusting valve and a second needle type adjusting valve through pipelines; the outlet end pipelines of the first needle type adjusting valve and the second needle type adjusting valve are converged and then connected with the air inlet end of a clamp; the air outlet end pipeline of the clamp is divided into two branches, wherein one branch is connected with the air inlet end of a detection valve; the air outlet end of the detection valve is connected with a detection port through the pipeline, and the other branch is connected with the air inlet end of a pressure relief valve; the air outlet end of the pressure relief valveis connected with a pressure relief port through the pipeline; and when the sealing performance test is performed, the cleanliness of a helium medium valve is firstly checked, then the air inlet end of the clamp is connected with the outlet end of the high-pressure nitrogen cylinder or the high-pressure helium cylinder through the first needle type adjusting valve and the second needle type adjusting valve, and nitrogen or helium is filled in the helium medium valve to perform pre-detection and internal sealing and external sealing detection. The helium medium valve sealing performance test device has the advantages of being reasonable in structure, convenient to assemble, easy to operate and high in practicality.

The invention relates to a method for determining gas content in hardened concrete, belonging to the technical field of building material testing. Some research has been done in the field of determination of gas content in fresh concrete in China at present, but the determination method of gas content in hardened concrete is still a blank. A volumetric method and a pressure method have been provided for determining gas content of fresh concrete in China, and related equipment has been invented and produced for effective determination; and however, no effective testing method for determining gas content of hardened concrete is provided. The invention provides a method combining a boroscope and a mathematic derivation formula; and the method can quickly and accurately determine gas content in hardened concrete, and has important meanings for predicting freezing resistance of hardened concrete in cold areas.

The invention relates to a system for detecting a corrosive gas concentration in air. The system comprises an absorbing container, a buffering container and an air pump which are connected successively. A certain amount of deionized water is pre-placed in the absorbing container. While the air pump is operated, the air is pumped from the corrosive gas sampling place by the air pump through the absorbing container and the buffering container, the deionized water in the absorbing container can absorb a corrosive gas in the pumped air, and the buffering container is used for preventing the waterfrom entering the air pump, wherein the corrosive gas concentration C1 in the air of the corrosive gas sampling place is calculated by the following formula: C1=C0*V0/71/(T*Q/Vm). The system has the beneficial technical effects of pertinence detection of the corrosive gas, smaller measuring error, and better measuring stability and reliability.

The invention relates to the technical field of cigarette combustion performance analysis, in particular to a cigarette ash holding capacity measuring device and method.The device comprises a clamping structure, a cigarette popping structure, a sliding block, an air blowing structure, an image collecting structure and the like. The clamping structure is used for clamping a cigarette; the cigarette popping structure intermittently touches and presses the cigarette butt part, the sliding block shakes, and the air blowing structure enables ash columns to fall to different degrees. The clamping structure is externally connected with a smoking machine so as to measure the ash holding capacity of the cigarette in a smoking combustion state; the image acquisition structure acquires a cigarette combustion video. The method comprises the following steps: collecting a cigarette combustion video; intercepting an image from the video; processing and calculating the image to obtain the ash holding capacity of the cigarette; the objective environment of cigarette combustion when a consumer smokes is simulated, the cigarette ash holding capacity measuring device is utilized, and the cigarette ash holding capacity can be conveniently and accurately measured and further studied by collecting the video and image of cigarette combustion and calculating and processing the image.

The invention relates to testing of fluidity of fluidity of a mitochondrial membrane of the liver of fish, in particular to an in-vivo test method for the fluidity of the mitochondrial membrane of the liver of pseudorasbora parva. The method comprises steps as follows: S1, a fish body exposure experiment; S2, preparation of the mitochondrial membrane of the liver of the pseudorasbora parva; S3, preparation of a DPH solution; S4, marking of a DPH fluorescent probe of the mitochondrial membrane; S5, determination of the fluidity of the membrane; S6, determination of the content of protein in mitochondria. With the adoption of the in-vivo test method for the fluidity of the mitochondrial membrane of the liver of pseudorasbora parva, influence of an agent on the fluidity of the mitochondrial membrane of the fish is determined accurately and conveniently.

The invention discloses a method for measuring the depth of a vibration mark, and belongs to the technical field of casting blank detection. The method comprises the following steps: obtaining a casting blank containing an oscillation mark; setting the surface where the oscillation mark of the casting blank is located as an oscillation mark detection surface, wherein the oscillation mark detection surface comprises an oscillation mark area and a non-oscillation mark area; coating the oscillation mark detection surface with penetrant so as to show a visible part of the oscillation mark area, and enabling the penetrant to penetrate into an invisible part of the oscillation mark area; removing the penetrant in the non-oscillation mark area; coating the oscillation mark area with a developer to obtain color development oscillation mark lines with different color development depths; and cutting out a longitudinal section along the color development oscillation mark line with the deepest developing color, randomly selecting invisible parts of a plurality of color development oscillation marks from the longitudinal section for measurement, taking an average value after measurement, and obtaining the depth of the oscillation marks. Through combined use of the penetrant and the developer, the invisible part of the oscillation marks can show different color depths according to the depth, the depth of the developed oscillation mark is measured, and simple and accurate measurement is realized.