53 results about "Mass variation" patented technology

A system and related method for improving tire uniformity includes providing a number (n) of test tires manufactured in a known order and identifying at least one candidate cyclic process effect with a corresponding frequency of introduction (f). A given uniformity parameter, such as radial or lateral run-out, balance, mass variation, radial lateral or tangential force variation, is measured for each tire in the test set, and measured data points are combined into a concatenated composite waveform. At least one process harmonic associated with each identified cyclic process effect is separated from the tire harmonics, for example, by Fourier transformation with identification of the process harmonics as positive integer multiples of the mth harmonic of the measured uniformity parameter where m=n/f. Once the process harmonics are extracted, filtered uniformity measurements can be provided or new tires can be built with the process effect minimized.

A system and related method for improving tire uniformity includes identifying at least one candidate process effect and a corresponding process harmonic number for each process effect. A given uniformity parameter, such as radial or lateral run-out, balance, mass variation, radial lateral or tangential force variation, is measured for each tire in a test set, such that the measurements contain tire harmonics as well as a process harmonics corresponding to each candidate process effect. Rectangular coordinate coefficients are electronically constructed for each said process harmonic, after which point the rectangular coordinates corresponding to each process harmonic are solved for (e.g., by using regression-based analysis). The magnitude of each said process harmonic is estimated, and a final magnitude estimate for each process harmonic can be determined by summarizing (e.g., by taking the average or median value) the respectively estimated magnitudes for each process harmonic across all test tires.

A device for packaging and applying a substance constituting a cosmetic or a care product containing at least one volatile hydrocarbon solvent can be closed hermetically and comprising comprises at least two elements, at least one of which is made of a plastics material. Said elements are suitable for moving relative to each other in order to enable the substance to be applied. The plastics material is selected in such a manner that the element(s) is/are not subject to significant mass variation when put into prolonged contact with the vapor of said solvent.

The invention relates to a water swelling polyurethane elastomer sealing product material and a preparation method. The material is prepared from the following three components (A), (B) and (C) through polymerization reaction of two steps, the elastomer material has water swelling property, and a main chain structure of material molecules absorbs water, wherein the (A) is hydrophilic polyether type polymer1polyol; the (B) is polyisocyanates; and the (C) is low-molecular polyol and amino chain-extended crosslinker. The molar ratio of the (B) to the (A) in an isocyanate end capping reaction is 1.3 to 2.8; and the molar ratio of a product of the isocyanate end capping reaction of the (A) and the (B) to the (C) in a chain-extended crosslinking reaction is 0.75 to 1.05. In the preparation method for the material, the reaction of the two steps is a reaction process of liquid polymerization, and the production of a product is an elastomer casting-molding process. The material has the characteristics of small mass variation rate and stable physical performance after the material absorbs the water repeatedly to swell, and permanent compression deformation and small stress relaxation.

The invention relates to a measuring method of the catalytic cracking slurry solid content. The measuring method comprises the following steps of: preheating, stirring and sampling the slurry, adding certain amount of preheated diluent in the slurry and uniformly stirring; carrying out vacuum filtration on the mixed oil sample, and filtering out undissolved substances on a piece of filter paper; extracting the filtered filter paper by using toluene till an extracting solution is colourless; and carrying out vacuum drying, cooling and weighing on the filter paper after extracting, and figuring out the solid content in the tested slurry according to the mass variation of the filter paper. The measuring method of the catalytic cracking slurry solid content provided by the invention realizes the purpose of stably and accurately measuring the solid content of slurry, and solves the problems of low precision and poor stability in actual measurement of the catalytic cracking slurry solid content, thus providing technical support for purification and utilization of slurry and monitoring on safe and stable operation of a catalytic cracking unit.

The invention provides a vehicle and a vehicle slide energy recycling method and system. The method includes: acquiring required motor brake torque when a slide energy recycling condition is satisfied; acquiring a battery influence factor; acquiring a vehicle speed influence factor; acquiring maximum motor brake torque; acquiring actual motor brake torque, selecting the smaller one of the required motor brake torque and the maximum motor brake torque, and multiplying the smaller one by the battery influence factor and the vehicle speed influence factor to obtain the actual motor brake torque; driving a motor to operate for energy recycling according to the actual motor brake torque. The v vehicle and the vehicle slide energy recycling method and system have the advantages that overall vehicle mass and current road slope can be detected in real time to adjust the required motor brake torque, compatibility of road slope variation and vehicle mass variation during vehicle energy recycling is achieved, the method is widely applicable, brake stability is increased by adding the current vehicle speed influence factor, and vehicle slide energy recycling safety is increased by adding a fault influence factor.

A system and related method for improving tire uniformity includes providing at least one set of test tires constructed with one or more process elements provided at known relative angular locations. At least one uniformity parameter, such as radial or lateral run-out, balance, mass variation, radial lateral or tangential force variation, is measured for at least one harmonic of interest for each test tire. Respective rectangular coordinates are determined for each measured uniformity parameter and harmonic of interest for each tire. A form of the determined rectangular coordinates (e.g., the rectangular coordinates themselves and/or the log of the residuals squared) is analyzed for each tire to identify optimized relative angular locations for each process element that reduce dispersion (or dispersion and mean) of the measured uniformity parameter. New tires are built with the one or more process elements positioned in the identified optimized relative angular locations.

System for generating pressure waves for deep seismic surveys operating in an underwater environment below the surface, suitable for investigating subcrustal objectives for prospecting purposes in the search for hydrocarbons and/or minerals. The system comprises one or more autonomous underwater vehicles organized in swarms, independent and coordinated, each housing one or more autonomous acoustic sea sources with self-propelled striker pistons. This system is served by a system of supporting surface stations, for reprovisioning, recovery actions, checking the well-being of the single vehicles and swarms and maintenance. The system is capable of using both conventional and non-conventional self-charged acoustic sea seismic sources. The system is capable of replicating the effect of a conventional source operated from the surface. The seismic sea source of the non-conventional acoustic type, proposed herein, can release a high-intensity pressure wave produced by a system of two striker pistons, which does not consume air when operating as it does not disperse air or another gas in water and does not produce mass variations of the device during its functioning and allows the amplitude and duration of the sound wave emitted and characteristics of the emission spectrum, to be regulated.

The invention discloses a method for measuring chemical reaction and physical change of oil rock and water rock, which comprises tests of three scales, namely tests of rock powder, rock and rock mass from mesoscopic to macroscopic. The invention also discloses a device based on the method. The device comprises an argon bottle, a pressure gauge and two high-pressure cylinder barrels, wherein the argon bottle is simultaneously communicated with the two high-pressure cylinder barrels through a pipeline; the pressure gauge is connected with the argon bottle in a non-detachable way; gypsum rock samples are respectively immersed in the high-pressure cylinder barrels with water and crude oil. The method disclosed by the invention has the beneficial effects that the method can be used for disclosing the chemical reaction and the physical change rule of water, oil and anhydrite, and evaluating the suitability of storing the oil in anhydrite ores; by testing the mass variation of the anhydrite before and after the reaction, the corrosion rules of the anhydrite in the water and the oil are analyzed.

The invention discloses a wheat BSR-Seq gene locating method. The wheat BSR-Seq gene locating method comprises the following steps of: constructing and sequencing mixing pools, performing quality variation mining, screening a transcript tightly linked to a target gene, developing and locating a molecular marker, etc. The next-generation transcriptome sequencing technology (transcriptome sequencing, RNA-Seq) and a mixing pool technology (Bulked Segregant Analysis BSA) are combined; a wheat sequencing draft sequence is used as a reference sequence at first; then, a lot of high-quality SNP heritable variations on the transcript is mined at high throughput by adopting the next-generation sequencing technology; the allele frequency is precisely calculated in combination with the mixing pool technology, so that the transcript tightly linked to the target gene possibly can be rapidly screened out; false positive is precisely checked and controlled through Fish; the method is independent of a reference genomic sequence, low in cost, rapid and high in precision; the wheat gene locating efficiency and precision are increased; the wheat polymorphic molecular marker developing cost is reduced; therefore, the wheat gene fine locating working time is reduced to several months from several years; the locating precision is reduced to a fraction or 0 cM from several cM; and the fine locating cost is reduced to several thousands from several ten thousands.

The invention discloses a device for detecting the heating mass of substances and gas sampling synchronously online, and aims to provide the device which can detect the heating mass variation of substances synchronously online without the influences by the external environment, and also can collect the gas in a baking oven. The device comprises a baking oven, an installation frame, an electronic weighing device, a gas sampling device and a volume compensation device, wherein the electronic weighing device is arranged on the bottom of the baking oven and is used for weighing the mass of substances; the gas sampling device and the volume compensation device are arranged on the baking oven; the volume compensation device comprises a guide sleeve which is arranged on the side surface of the baking oven and is communicated with the inner cavity of the baking oven, and a compensation cylinder which is arranged in the guide sleeve in a sliding mode. The gas sampling device comprises a collecting cylinder body arranged on the installation frame, a piston rod arranged in the collecting cylinder body and at least two piston bodies which are arranged in the collecting cylinder body in a sliding mode, and the two adjacent piston bodies are connected by a connecting rod.

The invention discloses a weakly-cemented rock mass water absorption test device and test method. The device comprises a test specimen tube, a test specimen tube support, a lifting screw rod, a weighing sensor, a weighing sensor recorder, a water supply tank, a constant-temperature water tank, leveling supports, a temperature controller, heating modules, temperature sensors, a water level controlvalve and the like. The water temperature and water level can be accurately controlled by the temperature controller and the water level control valve, and influences of water temperature and water level variation on test specimen mineral water absorption activity and water absorption mass monitoring results in a testing process can be eliminated while water absorption tests of weakly-cemented rock mass test specimens under different temperature conditions can be carried out. By the high-accuracy weighing sensor, test specimen water absorption mass variation can be continuously monitored to obtain a test specimen water absorption mass variation law under different temperature conditions. By a CCD (charge coupled device) camera module, an evolution law of macro-micro crack (fracture) structures on surfaces of test specimens can be recorded in real time. The test device and the test method have advantages that scientificity, feasibility and convenience in operation are achieved, and testefficiency and test result accuracy can be remarkably improved.

The invention discloses a testing method for the packaging effect of a battery cell packaging bag, which comprises the following steps: putting a chemical substance which absorbs water easily into the battery cell packaging bag to be tested for the packaging effect, and then packaging the battery cell packaging bag; and weighing the mass of the packaged battery cell packaging bag at set intervals, and counting the mass variation of the battery cell packaging bag to know the packaging effect of the battery cell packaging bag. In the testing method for the packaging effect of the battery cell packaging bag disclosed by the invention, the chemical substance which absorbs water easily is packaged in the battery packaging bag, and the packaging effect of the battery packaging bag is determined by testing the mass variation of the chemical substance, thereby realizing the purposes of conveniently and effectively testing the packaging effect of the battery packaging bag, being favorable for reducing the overall production cost of the battery, improving the overall production efficiency of the battery, and obtaining great production practice significance.

The invention relates to a method and a device for measuring the crushing degree of tobacco shreds. By the established crushing degree measuring method, not only the capability and the level of a material incoming end working procedure can be represented, but also the mass variation of the crushed tobacco shreds can be reflected through a crushing process, so that the physical quality of final cigarette products can be predicted. By utilizing the method and the device, the crushing of the tobacco shreds in any process can be studied, the self anti-crushing property of raw materials can be reflected, and the influence of external force factors, such as process flows, conditions and the like on the anti-crushing property thereof can be studied. The invention has the following advantages: by directly measuring the crushing degree of the tobacco shreds, the anti-crushing ability of the tobacco shreds is represented correctly and the size distribution conditions of the tobacco shreds before being crushed and after being crushed are reflected; the invention is of great significance in predicting the processing quality of the tobacco shreds and provides an effective measure for studying the crushing process of tobacco shreds; meanwhile, the invention has advantages of low sampling quantity, simple operation and good method reproducibility. The designed special crushing device has reasonable structure and can simulate the crushing degree of any processing on the tobacco shreds.

The invention discloses a high-performance nano preservative film. The invention is characterized in that the high-performance nano preservative film is prepared from the following raw materials in parts by weight: 50-70 parts of polyethylene plastic, 10-15 parts of silver nano material, 10-15 parts of TiO2 nano material, 20-25 parts of plastic starch, 20-25 parts of degradable polycaprolactone, 3-5 parts of low-molecular weight polyhexylene wax, 6-8 parts of coupling agent, 3-5 parts of lubricant, 3-5 parts of monostearoyl glyceride, 4-6 parts of stabilizer, 3-5 parts of talcum powder and 10-15 parts of kaolin. The prepared film can well adapt to the physiologic, biochemical and mass variation laws of vegetables due to oxygen permeability and water permeability, thereby ensuring the preservation quality and barrier performance of the product and prolonging the storage time of food. The film has favorable antimicrobial and antiseptic effects, can ensure the food safety within the shelf life. The film has the advantages of high antimicrobial efficiency, high safety and no toxicity, is degradable and flammable, is easy to recover, and avoids hazarding health of people.

The invention relates to a method and an apparatus for measuring the gas forming quantity of calcium carbide by using a single calibrating weight method, belonging to the technical field of chemical detection. The apparatus for measuring the gas forming quantity of calcium carbide by using a single calibrating weight method comprises a weight weighing machine, a reactor and a gas purifier, wherein a gas inlet of the gas purifier is connected with a gas outlet of the reactor; the reactor and the gas purifier are arranged on the upper part of the weight weighing machine; and the weight weighing machine weighs the weight of the reactor and the gas purifier. In addition, the invention also provides a method for detecting the gas forming quantity of the calcium carbide by utilizing mass variation values before and after the weighed calcium carbide reacts with water. The invention has accurate measurement data, simple and convenient operation method, small volume of the measurement device, low price, convenient use and verification and convenient generalization and popularization.

The invention belongs to the technical field of crystal growth, and relates to a falling temperature method crystal growth system capable of maintaining constant supersaturation. The system comprises a detection unit composed of a tension sensor and a thermoelectric couple, a control unit composed of a signal processor and a microcomputer, and an execution unit composed of a temperature controller; the system can realize real-time measurement of mass variation of the growing crystal, and can regulate the water bath to cool according to the variation, so as to make the increment of supersaturation caused by temperature falling of solution equal to the decrement of supersaturation caused by crystal growth, thus, steady and rapid growth of crystal under constant supersaturation is realized, generation of a growth layer and an inclusion is inhibited, and quality of the grown crystal is improved.

The invention discloses an acrylate rubber modified silicone rubber oil-resistant material and a preparation method thereof. The invention is characterized in that acrylate rubber is used as a modifier, an acetic acid-vinyl acetate copolymer is used for compatibilization, a composite cross-linking agent is employed, and the obtained acrylate rubber modified silicone rubber oil-resistant material has Shore hardness of 60 to 75, tensile strength of no less than 7 MPa, elongation at break of no less than 300%, tearing strength of no less than 15 kN/m and mass variation of no more than 30% in oil resistance test with ASTM No. 3 standard oil at a temperature of 150 DEG C for 70 h. The material provided by the invention has characteristics of both acrylate rubber and silicone rubber, excellent resistance to high and low temperature and to oil and superior mechanical properties. The preparation method provided by the invention has the advantages of simple process and low cost; and the prepared material can be used for an electric wire, a cable, a damping sealing device and the like in high and low temperature oil-resistant environments.

The invention discloses a method for determining tobacco leaf tissue free water content. According to the invention, a mass variation of leaf tissues before sucrose solution immersion and after sucrose solution immersion are directly determined by an electronic balance, and a content of free water in leaves is calculated according to the mass difference. According to the invention, a mass variation of leaf tissues before and after sucrose solution immersion is directly determined with a weighting method, and a content of free water in leaves is then calculated. In prior arts, with a traditional Abbe refractometer method, the determining process is relatively complicated, the quantity of determination data is relatively large, the repeatability is poor, and errors are relatively severe. With the method provided by the present invention, the defects are solved, and a difficulty in quick and accurate determination of tobacco leaf tissue free water content is overcome.