151 results about "Physical approach" patented technology

A method and apparatus for ultrasonic in-process monitoring and feedback of resistance spot weld quality uses at least one transducer located in the electrode assembly transmitting through a weld tip into an underway weld. Analysis of the spectrum of ultrasonic waves provides the operator with an indication of the size, thickness, location, dynamics of formation and quality of the spot weld. The method presents a fundamentally new physical approach to the characterization of the spot weld quality. Together with transmission mode it includes new modes of operation of ultrasonic probes such as a reflection mode and simultaneous use of transmission and reflection modes, and a new physical interpretation of the signal analysis results.

The invention provides an analytic hierarchy process based coal bed methane comprehensive evaluation method and belongs to the field of seismic exploration and development of oil gas and coal bed methane. The method includes: (1) acquiring main controlling factors of coal bed methane enrichment by means of areal geology analysis; (2) constructing a judgment matrix according to the main controlling factors; (3) calculating weight values of elements, standing for the main controlling factors of coal bed methane enrichment, in the judgment matrix; (4) setting a coal bed methane enrichment area as a research object layer, setting the main controlling factors as a reference layer, and completing comprehensive evaluation of the coal bed methane enrichment area according to an analytic hierarchy process. The analytic hierarchy process based coal bed methane comprehensive evaluation method has the advantages that by means of a geophysical method and the AHP (analytic hierarchy process), weighting coefficients of the main controlling factors of coal bed methane are obtained by calculation; by means of linear operation and relevant physical geographical predication technological achievements, a coal bed methane comprehensive evaluation map of the coal bed distribution area is obtained, and an evaluation result and an actual drilling result are highly uniform.

The invention discloses a physical method based on environment mapping for simulating human skin subsurface scattering. The method comprises steps that, a legendre formula is utilized to project and disintegrate an illumination integration equation in a to-be-simulated scene to acquire a luminance value of each pixel; the luminance value of each pixel is multiplied with an overflow color value to acquire a scattering value of each pixel at a back light face. The physical method based on environment mapping for simulating human skin subsurface scattering solves problems of large data processing workload, large occupation storage space and low processing efficiency existing in the prior art and has advantages of small data processing workload, small occupation storage space and high processing efficiency.

The invention relates to the technical field of fluid measurement, and provides a flow rate measuring system and a flow rate measuring method for multi-phase fluid. The system comprises a measurement module, a signal amplification module, a data processing module and a terminal module which are connected in turn, wherein the measurement module at least comprises two measurement devices arranged on a pipeline at a certain interval, and the two measurement devices respectively measure the content of the same element passing the sections where the devices are positioned by a nuclear physics method; the signal amplification module is respectively connected with the two measurement devices and amplifies signals acquired by measurement; and the data processing module converts the signals into digital signals first, then performs digital lowpass filtering treatment and quantization treatment on the digital signals, establishes a mathematical model by utilizing a cross-correlation function principle, performs data analysis treatment on the digital signals, and outputs results of a flow and a flow rate to the terminal module. The system and the method reduce the measuring complexity, reduce corresponding errors caused and improve measuring accuracy and reliability.

The juglone extracting process includes the following steps: 1. crushing the root, stem, leaf, bark or pericarp of Juglans mandshurica as the material to below 20 mesh; 2. soaking the material in solvent of 1 to 1000 times weight through stirring for 0-12 hr; 3. distilling the soaked material under reduced pressure while replenishing solvent to obtain colorless distillate; 4. separating out the product physically from the distillate and drying to obtain juglone-containing product. The present invention has simple process, short production period, low cost, high product purity and yield, and other advantages.

The technology is based on the anisotropic plasma etching of organic polymer sheets partially protected by a metallic mask. The originality of the process is to pattern the surface properties by the same physical means as the one used for the three dimensional fabrication and simultaneously to this fabrication. Surface properties means, but are not limited to hydrophobicity, hydrophilicity, conductivity, reflectability, rugosity and more precisely the chemical and/or physical state of the surface. It is also possible to generate the desired fonctionalities, for instance carboxylic acid, ester, ether, amid or imid, during the etching process. The patterning of the different properties may be achieved by two different techniques that may be used separately or simultaneously.

The invention discloses a method for manufacturing a large-area grapheme transparent conducting film, and belongs to the technical field of grapheme manufacturing and application. According to the method, a plurality of non-etching physical methods are adopted to conduct stripping on grapheme on a metal substrate, dispersion liquid is formed through ultrasound, conductive macromolecules with the high conductivity is added into the liquid for conducting stabilization processing, and the stable dispersion liquid is obtained. Wire rod coating or spraying or blade coating or other modes are carried out on the obtained dispersion liquid to form the films on a transparent substrate, and the grapheme transparent conducting films with the controllable thickness can be obtained. According to the method, recycling of the metal substrate in the chemical vapor deposition process can be achieved, the subsequent transfer step is not needed, the method is economical, simple and convenient to operate, the high-quality grapheme manufactured by the chemical vapor deposition method is combined with the continuous liquid phase film making technology, and a large number of high-quality grapheme transparent conducting films can be manufactured.

The present invention relates to a method for screening and identifying test compounds that bind to a preselected target ribonucleic acid (“RNA”). Direct, non-competitive binding assays are advantageously used to screen libraries of compounds for those that selectively bind to a preselected target RNA. Binding of target RNA molecules to a particular test compound is detected using any physical method that measures the altered physical property of the target RNA bound to a test compound. The structure of the test compound attached to the labeled RNA is also determined. The methods used will depend, in part, on the nature of the library screened. The methods of the present invention provide a simple, sensitive assay for high-throughput screening of libraries of compounds to identify pharmaceutical leads.

The invention relates to a rainfall runoff measurement method, in particular to a hillside point rainfall runoff measurement method which belongs to the field of hydrologic forecast measurement in hydraulic engineering. The invention comprises measurement method steps, equipment, equipment mounting steps and the combination of measurement result analysis and calculation methods. The invention has the advantages that the hillside point rainfall runoff measurement method is provided to ensure that researchers can carry out precipitation quantity division through a physical method; the time sequence process of various runoff constituents can be measured; and the runoff yield space variation of the hillside can be obtained through reasonable arrangement.

The invention provides a method for brewing wild bilberry ice wine by utilizing complex enzyme enzymolysis and a low-temperature oxygen-free fermentation technology, and belongs to the field of alcoholic beverage preparation. The method comprises the following processes: putting off wild bilberry harvest when the temperature is lower than -5 DEG C, carrying out complex enzyme enzymolysis, carrying out low-temperature oxygen-free pure-bred yeast fermentation under the protection of carbon dioxide, adding blueberry laevulose for secondary fermentation, ending the fermentation according to a physical method, carrying out low-temperature storage with an oak barrel, bottling for storage, and the like. The method has the advantages that the defect that the conventional blueberry wine is thin and highly acid is overcome; and the fruity and the fragrant characteristics are enhanced. Therefore, the wild bilberry ice wine brewed according to the method tastes sweet and intense, has strong blueberry fruity flavor and bouquet, and looks clear and pretty.

The present invention is directed to sensors that use wide band gap piezoelectric films such as aluminum nitride and zinc oxide. The films can be deposited with chemical and physical methods and etched or micro machined into miniature and micro sensing elements. Various piezoelectric sensing structures such as compression mode and cantilever-type accelerometers, diaphragm-type pressure sensors, and micro sensor arrays can be manufactured with the sensing elements. They can be used in the measurements of vibration, shock, dynamic pressure, stress, and high resolution ultrasound non-destructive test at high temperature up to 800-1000° C.

The invention discloses a magnetic resonance-based water treatment device. The magnetic resonance-based water treatment device realizes water treatment through electromagnetic waves produced by magnetic resonance. The magnetic resonance-based water treatment device is characterized in that a power signal is subjected to transformation rectification by a transformation rectification circuit and then is input into a high-frequency inverter and a low-frequency inverter; radio frequency pulses having different frequency values are invertedly output by the high-frequency inverter and the low-frequency inverter; and the radio frequency pulses having different frequency values are transmitted to corresponding electromagnetic vibration wave transducers in a water treatment tank so that two different electromagnetic wave energy zones are formed. Through the magnetic resonance-based water treatment device, a water molecule is stimulated by resonance-supported radio frequency pulse energy waves and then splits and thus a hydrogen bond active force, an organization structure and an energy load capacity of water are changed. Water treated by the magnetic resonance-based water treatment device has the advantages that the bioavailability and the biological activity are improved; metabolism quality is improved; a free radical inhibition and removal capability is obtained; and a gene control capability is improved. The magnetic resonance-based water treatment device can produce health water, adopts a physical production technology and simple production processes, and has high production efficiency and a low cost.

The invention relates to a method for producing electrodeposited cobalt, which belongs to the technical field of production methods of the electrodeposited cobalt. The method for producing the electrodeposited cobalt by a non-hydrochloric acid electrolyte is characterized in that the method comprises the steps of: the preparation of a CoCl2 solution, extraction and transformation, dechlorination, the removal of an organic substance by a physical method, the preparation of a cobalt electrolyte, and the production of the electrodeposited cobalt. The method adds an acid fog inhibitor into the electrolyte to ensure that the expansive force on the surface of the electrolyte is reduced and oxygen precipitated by an anode smoothly passes through the liquid level so as to prevent acid from being brought into production field. The method effectively improves work environment and prevent the pollution to the ambient environment. The method for producing the electrodeposited cobalt by the non-hydrochloric acid electrolyte, due to adopting solution transformation and chlorine washing processes, ensures that Cl<-> in the electrolyte is lower than 0.1g.l<-1>, and basically meets the requirement of no precipitation of chlorine gas during the electrodeposition.

The invention discloses a polishing solution for electropolishing an austenitic stainless steel orifice. Each litre of electropolishing polishing solution contains 1000 to 1250g phosphoric acid, 200 to 260g sulfuric acid and 180 to 240g absolute ethyl alcohol. The electropolishing of the austenitic stainless steel orifice is well realized by reasonably designing the electropolishing solution and electropolishing technological parameters. The electropolishing of stainless steel orifices, deep blind holes and cross holes with relatively small aperture of more than or equal to 1mm and relatively large ratio of depth to diameter of more than or equal to 10mm is realized, The polishing effect of the invention is obviously better than that of the traditional mechanical or physical method and can be as high as the polishing effect of a mirror surface according to the surface condition of the unpolished orifice.

The invention belongs to the field of materials chemistry and in particular relates to a method for improving the dispersibility of a single-walled carbon nanotube in aqueous solution. The method comprises the following detailed steps of: dispersing a single-walled carbon nanotube purification sample in the aqueous solution of ethanol, and performing ultrasonic dispersion on the sample to uniformly suspense the sample in the solution; quickly cooling the obtained solution by using liquid nitrogen as a cooling medium and continuously supplying the cooling medium to guarantee that the cooling temperature of the sample reaches -50 to -190 DEG C; at normal temperature and under normal pressure, placing the solid sample in a closed device in which a high-speed blade rotates, wherein the rotation speed is 22,500rpm, the rotation time is 1 minute and the crushing process is repeated for 1 to 7 times; and filtering and drying the obtained sample to obtain the single-walled carbon nanotube aqueous solution with relatively good water solubility finally. In the invention, a physical method is adopted at normal temperature and under normal pressure, so that the structure of the single-walled carbon nanotube in aqueous solution is not damaged in a treatment process; the ethanol serving as a raw material is simple and available and causes no pollution to environment; and the method has the advantages of simple process and easy processing, so that the method is suitable for commercial production.

The invention relates to an improved physical method for topographic correction of remote sensing images, which considers the influence of the topography on incident irradiance and earth surface reflectivity received by the sloping surface, more accurately computes sky radiation received by the sloping surface pixel, and meanwhile considers the influence of atmosphere during the topographic correction. The method of the invention can obtain the better result of the topographic correction; and the method belongs to the physical method, has universality and can be applied to various optical remote sensing images.

A virtual fabrication environment for semiconductor device structure development is discussed. The insertion of a multi-etch process step using material-specific behavioral parameters into a process sequence enables a multi-physics, multi-material etching process to be simulated using a suitable numerical technique. The multi-etch process step accurately and realistically captures a wide range of etch behavior and geometry to provide in a virtual fabrication system a semi-physical approach to modeling multi-material etches based on a small set of input parameters that characterize the etch behavior.

The invention discloses a method for producing methanol from semi-coke furnace tail gas. The method is characterized in that the air separation unit and the step of producing the methanol through auto-thermal reforming are omitted on the basis of the existing methanol synthesis process, the semi-coke tail gas is mixed with one or more gas sources high in hydrogen-carbon ratio by a physical method, so that the hydrogen-carbon ratio in the raw material entering the methanol synthesis step satisfies the expression that f=(H2-CO2)/(CO+CO2)=2.05-2.15, and industrial methanol satisfying GB338-2004 is obtained through three-tower rectification; therefore, the process is simplified, the investment is reduced, the environmental pollution problem caused by direct emission or burning of the semi-coke tail gas is solved and the emission of sulfides, dust and hydrocarbon is reduced; besides, the recycling of the industrial effluent gas: semi-coke tail gas is also realized so that the economic benefit of the semi-coke enterprise is improved.

A method for graphical hairstyle generation presents an interactive technique that produces static hairstyles by generating individual hair strands of the desired shape and color, subject to the presence of gravity and collisions. A variety of hairstyles can be generated by adjusting the wisp parameters while the deformation is solved efficiently accounting for the effects of gravity and collisions. Wisps are generated employing statistical approaches. As for hair deformation, a method is used based on physical simulation concepts but is simplified to efficiently solve the static shape of hair. On top of the statistical wisp model and the deformation solver, a constraint-based styler models artificial features that oppose the natural flow of hair under gravity and hair elasticity, such as a hairpin. Our technique spans a wider range of human hairstyles than previously proposed methods, and the styles generated by this technique are pretty realistic.

The invention provides a method for preparing ZnO nanometer powder by ultrasonic ball milling. The method comprises the following steps of: ball-milling metal zinc in an ultrasonic environment, filtering ball-milling solution under vacuum; and drying filter residues under vacuum and at a low temperature to obtain the purified ZnO nanometer powder. The method utilizes the organic coupling of ultrasound fields and mechanical force fields and adopts the ball-milling process under an ultrasonic action to change the metal Zn directly into single-phased and purified ZnO nanometer powder in one step. The method utilizes the organic coupling of ultrasound fields and mechanical force fields for the first time to successfully prepare the ZnO nanometer powder, organically combines the physical method and the chemical method; no other catalysts, refiners and other organic reaction solvents are unnecessarily added in the preparation process; and the method also has the advantages of simple process, lower-priced equipment, easy operation, easily bought materials, environmental protection and no pollution, high product purity, low cost, less energy consumption and the like, and the ZnO nanometer powder, prepared by the method, has quite good industrialization prospect.