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691results about "Material analysis using radiation diffraction" patented technology

Neutron diffraction rocking curve space measurement analysis method and system of single crystal material

The invention provides a space measurement and analysis method and system for a neutron diffraction rocking curve of a single crystal material, and the method comprises the steps: S1, building a laboratory coordinate system and a sample coordinate system, and setting a test point grid; s2, collecting a two-dimensional diffraction image of each test point to obtain angle information of the test point; s3, integrating the angle information of the test points based on the test point grid, and preprocessing the two-dimensional diffraction image; s4, extracting key structure parameters of each test point based on the preprocessed two-dimensional diffraction image; s5, constructing a stress field according to the key structure parameters; and S6, constructing a distribution map of crystal internal lattice parameters in a three-dimensional space according to the stress field. The method provided by the invention effectively improves the capability of identifying the non-uniformity and local distortion of the crystal structure, can be widely applied to the fields of residual stress evaluation, defect evolution monitoring, material quality control and the like, and has a remarkable engineering application value.
Owner:SHANGHAI JIAOTONG UNIV

Micron-sized speckle preparation method for quasi-in-situ OIM-DIC mesoscopic strain field analysis

A micron-sized speckle preparation method for quasi-in-situ OIM-DIC mesoscopic strain field analysis comprises the following steps: (1) polishing the surface of a sample to be detected to obtain a bright and scratch-free mirror surface; (2) preparing Si powder turbid liquid; (3) dipping speckles of a sample to be detected in the Si powder turbid liquid to obtain micron-sized speckles; and (4) observing and shooting speckle morphology, and if Si particles are uniformly distributed and dispersed, applying the Si particles to quasi-in-situ OIM-DIC mesoscopic strain field analysis. The method is simple, convenient and rapid, low in operation and construction cost, high in practicability, good in particle dispersity, high in precision, more suitable for calculation of a quasi-in-situ OIM-DIC mesoscopic strain field, controllable in preparation process, low in cost and free of damage to the surface of a sample, the definition and stability of speckle characteristics are remarkably improved, DIC mesoscopic micron-scale operation under a quasi-in-situ OIM mechanical test can be effectively achieved, and the method is suitable for large-scale industrial production. And the grain and mesoscopic strain field information is successfully coupled.
Owner:SHANDONG UNIV

Method for determining heat source center of gold and copper ore area containing alunite minerals

The invention relates to the technical field of mineral exploration, and discloses a method for determining a heat source center of a gold and copper ore area containing alunite minerals, which comprises the following steps of: determining a to-be-detected area of a target mining area, sampling surface rocks according to a preset grid or section, and acquiring a plurality of rock samples and corresponding original acquisition points; carrying out mineral component analysis on the plurality of rock samples, screening the alunite-containing samples to obtain a plurality of alunite-containing samples, and screening effective samples; performing elemental component analysis on the effective sample, and extracting elements and contents related to gold mineralization or copper mineralization in the effective sample; setting a potential heat source center, calculating the distance between each effective sample and the potential heat source center, introducing a distance attenuation index, establishing an objective function of the element content and the distance, and adopting a gradient descent method to perform inversion solution by minimizing the objective function to obtain coordinates of the potential heat source center, namely the determined heat source center of the gold ore or the copper ore; the method improves the accuracy of gold and copper ore area heat source center exploration.
Owner:INST OF MINERAL RESOURCES CHINESE ACAD OF GEOLOGICAL SCI

Multi-scale performance evaluation and optimization method and device for well cementation cement stone

The invention discloses a multi-scale performance evaluation and optimization method and device for well cementation cement stone, and relates to the technical field of oil exploitation, the well cementation cement stone is subjected to nanoindentation test and scanning electron microscope microstructure test, and a mechanical property-microstructure test result is obtained; performing electronic computer tomography and mercury injection test on the well cementation cement stone, and constructing a pore network three-dimensional model; performing triaxial mechanical property test, thermogravimetric analysis and thermal expansion test on the well cementation cement stone to obtain a thermal-mechanical coupling test result; performing X-ray diffraction and X-ray fluorescence spectrum analysis on the well cementation cement stone to obtain mineral phase information and element information of the cement stone; according to the method, a mechanical property-microstructure test result, topological parameters, a thermal-mechanical coupling test result, cement stone mineral phase information and element information are fused, an optimal design scheme for target well conditions is generated, multi-dimensional performance testing and characterization are achieved, and an accurate basis is provided for well cementation cement stone optimal design and quality control.
Owner:CHINA UNIV OF PETROLEUM (BEIJING)

Multi-principal element alloy local lattice distortion measurement method based on synchrotron radiation X-ray atom pair distribution function

PendingCN121049310AComplex mathematical operationsMaterial analysis using radiation diffractionPair distribution functionAtomic pair
The invention relates to a multi-principal element alloy local lattice distortion measurement method based on a synchrotron radiation X-ray atom pair distribution function, which comprises the following steps: preparing an experimental material, and collecting two-dimensional diffraction data by using synchrotron radiation high-energy X-rays; separating local and average structure information through an atom pair distribution function; and verifying local distortion causes by combining structure fitting and DFT supercell relaxation. According to the method, the accuracy of capturing the local distortion of the atomic scale can be improved, the integrity of statistical information of the local structure distortion of the quantitative characterization material can be fully supplemented, and high-precision measurement and quantitative analysis of dynamic distortion can be systematically realized.
Owner:HUATENG NEW MATERIALS (BEIJING) TECHNOLOGY CO LTD

Research method for vanadium enrichment mechanism in diagenetic stage of phosphorus vanadium ore

The invention belongs to the technical field of vanadium enrichment mechanisms of phosphorus vanadium ores, and discloses a research method of a vanadium enrichment mechanism in a diagenetic stage of phosphorus vanadium ores, which comprises the following steps: S1, sample collection and treatment; s2, rock ore identification and mineral composition analysis; s3, analyzing the occurrence state and microcell morphology of vanadium; s4, performing geochemical analysis on the whole rock; s5, in-situ microcell geochemical analysis is carried out; s6, phosphorus nodule analysis; s7, comprehensive analysis and mineralization model establishment; according to the method, mineralogy, total rock geochemistry, micro-area surface scanning and other multi-scale and multi-means research methods are comprehensively utilized, and the vanadium occurrence state, the ore-forming fluid evolution and the phosphorus-vanadium coupling relation are finely described; in-situ microcell geochemical analysis is introduced into phosphorus nodule analysis, the internal structure, the growth sequence and element distribution of the phosphorus nodule are directly revealed, obvious frontier and systematicness are achieved, and reliable theoretical support is provided for accurate exploration of vanadium ore resources and green and efficient dressing and smelting process research and development.
Owner:ANHUI UNIV

Method for improving obdurability matching of titanium alloy by inducing FCC phase through high-temperature impact deformation

The invention discloses a method for improving obdurability matching of titanium alloy by inducing an FCC phase through high-temperature impact deformation, and belongs to the technical field of metal material phase change regulation and control. The method comprises the steps that after annealing treatment and surface treatment are conducted on a substrate material, the substrate material is sequentially covered with a sacrificial layer and a restraint layer and evenly pressed, the substrate material is placed on a heating table of a high-temperature impact deformation device to be preheated, and the substrate material is subjected to high-temperature impact deformation; according to the method, the energy required for transformation of the HCP phase to the FCC phase is reduced, the heating temperature and laser shock parameters are set, the HCP phase is induced to be transformed into the FCC phase under the dynamic stress-temperature synergistic effect through multi-pass laser shock peening and high-temperature and high-speed shock deformation, the FCC phase, nano twin crystals and residual compressive stress form the synergistic peening effect, and therefore the HCP phase is converted into the FCC phase. Further, the grain refinement process is accelerated, the strength and plasticity matching is improved, and the high-temperature impact deformation induces the FCC phase to improve the strength and toughness matching of the titanium alloy; the substrate is made of industrial pure titanium or titanium alloy. The method is suitable for high-strength parts with complex geometrical shapes, is more widely applicable than traditional rolling annealing, and provides reference for strengthening and toughening of titanium alloy.
Owner:SHANGHAI JIAOTONG UNIV

Multifunctional combined integrated in-situ experiment device for table type X-ray spectrometer

The invention relates to the technical field of semiconductor energy material detection, and discloses a table type X-ray spectrometer multifunctional combined integrated in-situ experiment device, which comprises an X-ray source, a light source, an X-ray detector, an X-ray detector, an X-ray detector, an X-ray detector, an X-ray detector and an X-ray detector, the sample table is used for adjusting the position of the sample in the light path; the flight pipeline is used for transmitting X-rays and signals; the detector is used for collecting electronic signals. By adopting the unique design of the X-ray monochromator and the focusing mirror, the measurement and analysis of an X-ray absorption fine structure and a crystal structure can be realized in a conventional laboratory environment without using a synchrotron radiation light source, and X-ray diffraction, scattering and absorption spectrograms comparable to a synchrotron radiation level are obtained with extremely high sensitivity and light source quality; qualitative and quantitative analysis, crystalline state and valence state analysis and long-range structure and short-range coordination structure analysis of elements are achieved, and grazing incidence X-ray diffraction, powder diffraction and XAS research can be conducted in real time.
Owner:SHANGHAI ADVANCED RES INST CHINESE ACADEMY OF SCI

Evaluation method for permeability damage degree of low-permeability reservoir

The invention relates to the field of petroleum engineering, in particular to a method for evaluating the permeability damage degree of a low-permeability reservoir, which comprises the following steps of: 1) coring a target reservoir, and measuring by an experiment to obtain core mineral percentage content and rock mechanical parameters; 2) establishing a reservoir single proppant model, calculating the porosity change rate when the single proppant is embedded, and establishing a mechanical distribution function of the whole proppant and the rock wall surface according to the percentage content of the core minerals and the mechanical parameters in the step 1); and 3) converting the change of the permeability of the reservoir when the proppant just enters the stratum and is in a stable state into porosity change by combining the single-particle pore change rate and the rock mechanical distribution function, calculating a porosity change index, and evaluating the damage degree of the reservoir. According to the method disclosed by the invention, the reservoir damage and permeability reduction caused by propping agent embedding due to stress change are converted into a porosity change index, and the mine scale reservoir permeability damage degree is indirectly evaluated.
Owner:XI'AN PETROLEUM UNIVERSITY

Phase change material phase change temperature calibration method and system

The present invention relates to the field of material testing technology and discloses a method and system for calibrating the phase change temperature of a phase change material. The method comprises: collecting surface temperature distribution data and crystal structure parameters of the phase change material using a dual-modal synchronous monitor and establishing a temperature-structure correlation matrix; determining the surface temperature distribution data corresponding to the mutation moment based on the temperature-structure correlation matrix when the crystal structure parameters undergo a sudden change, and calculating the initial phase change temperature range; constructing a nonlinear mapping model between the initial phase change temperature range and the heating rate, and dynamically compensating the initial phase change temperature range based on the nonlinear mapping model to obtain a corrected phase change temperature; inputting the corrected phase change temperature into a gradient temperature control module containing a standard sample; comparing the offset between the actual phase change position of the reference material and the theoretical position, and reversely correcting the corrected phase change temperature based on the offset to obtain a final calibration temperature. The present invention can improve the accuracy of phase change temperature calibration of phase change materials.
Owner:INST OF ROCK & SOIL MECHANICS CHINESE ACAD OF SCI

Industrial digital X-ray imaging detection control system

The invention relates to the technical field of X-ray imaging detection, and particularly discloses an industrial digital X-ray imaging detection control system, which obtains the size misjudgment degree of a pore in a pore detection image corresponding to a high scattering superposition layer in a plurality of historical scattering detection periods, and performs correlation analysis on the size misjudgment degree and the scattering superposition degree. Whether the scattering superposition influences the pore size or not is evaluated, whether the pore size detection error is related to the scattering superposition phenomenon or not can be determined, the source of the detection error can be accurately found out, the detection sequence can be reasonably arranged, the area with the high misjudged superposition value can be preferentially processed, and if the influence is caused, the scattering control coefficient is obtained. The digital X-ray imaging is regulated and controlled according to the scattering control coefficient, the energy of a ray source can be properly increased, and parameters such as the distance or the angle between the ray source and a workpiece can be adjusted, so that scattering is reduced.
Owner:JIANGSU DIYE TESTING TECH CO LTD

Surface corrosion evaluation method for aluminum alloy plate with epoxy coating

The invention relates to the technical field of processing, testing or inspection of aircraft parts, and provides a surface corrosion evaluation method for an aluminum alloy plate with an epoxy coating, which comprises the following steps: acquiring an aluminum alloy plate sample with an epoxy coating at different time after being exposed in a coastal atmospheric environment, collecting two-dimensional closed corrosion area image data of the surface of the sample, and calculating the surface corrosion of the aluminum alloy plate with the epoxy coating according to the two-dimensional closed corrosion area image data; processing the image to extract a closed boundary of the corrosion area; calculating the boundary length of the corrosion area and the included corrosion area, and calculating the fractal dimension of the corrosion area based on the length and the area; according to the method, the correlation model between the fractal dimension of the corrosion area and the exposure corrosion time is established, the interval distribution of the fractal dimension under different corrosion time is determined, the method is used for evaluating the corrosion state and the development trend of the corrosion state, the limitation of parameter evaluation modes such as subjective judgment and single corrosion depth is avoided, and the accuracy and objectivity of a corrosion evaluation result are effectively improved.
Owner:AIR FORCE UNIV PLA

Deep high-temperature rock statistical damage constitutive model construction method

The invention relates to the technical field of oil and gas well wall stability and fracturing yield increase development, in particular to a deep high-temperature rock statistical damage constitutive model construction method which comprises the following steps: performing mineral component and microstructure analysis on a deep rock core by adopting XRD (X-Ray Diffraction) and SEM (Scanning Electron Microscope) technologies, and performing quantitative statistics on mineral content to obtain a deep high-temperature rock statistical damage constitutive model. The method comprises the following steps: acquiring rock brittleness and plasticity characteristic basic data, performing a triaxial compression test by adopting a high-temperature triaxial compressor, and establishing a constitutive model capable of reflecting deep high-temperature rock damage; according to the mechanical characteristics of the deteriorated rock due to temperature rise, the provided model is verified to accurately simulate stress-strain curves of a sample in each stage of a single axis and a conventional three axis under different temperatures and confining pressures, the rationality of indexes is verified, and the deep high-temperature rock statistical damage constitutive model is obtained. The method solves the problem that in the prior art, a statistical damage constitutive model capable of accurately reflecting stress-strain characteristics of the deep high-temperature rock at each stage of a single axis and a conventional three axis under different temperatures and confining pressures is lacked.
Owner:CHINA UNIV OF PETROLEUM (EAST CHINA)

Gold mineral exploration method, device and system and storage medium

The invention provides a gold mineral exploration method, device and system and a storage medium. Relates to the technical field of mineral exploration. The gold mineral exploration method comprises the following steps: acquiring a backscattered electron image of a sample to be detected, and screening bright mineral phase particles based on a preset gray threshold; performing energy spectrum analysis to obtain an actually measured energy spectrum corresponding to each bright mineral phase particle; and determining the gold-bearing minerals in the to-be-detected sample according to the actually measured energy spectrum. According to the method provided by the invention, the gold-bearing mineral is determined by analyzing the actually measured energy spectrum, and the identification accuracy and the automation efficiency of the micro-fine gold are improved; the method can effectively solve the problem of missed judgment caused by energy spectrum signal mixing and low matching degree due to fine or wrapped particles in a traditional method, so that more accurate process mineralogy data is obtained, and a reliable basis is provided for formulating an efficient dressing and smelting recovery scheme.
Owner:BEIJING MINING & METALLURGICAL TECH GRP CO LTD +1

Method for evaluating contribution of each component to resistivity of shale oil reservoir at high temperature and high pressure

A method for evaluating contribution of each component to shale oil reservoir resistivity at high temperature and high pressure is applied to the field of oil exploration and development. The method comprises the following steps: (1) analyzing the volume percentage of each clay mineral, the pore water content and the mineralization degree of the shale oil reservoir pressure-maintaining closed core; (2) when the fluid pressure is greater than 23MPa, measuring the resistivity of the pressure-maintaining closed rock core at each temperature point; (3) carrying out water balance treatment on pure clay minerals, namely kaolinite, montmorillonite, illite and chlorite, and measuring the resistivity at each temperature point when the fluid pressure is greater than 23MPa; (4) when the fluid pressure is greater than 23MPa, measuring the resistivity of each temperature point of the solution consistent with the mineralization degree of the pore water; and (5) constructing a resistivity evaluation model, and evaluating the contribution of each component to the resistivity of the shale oil reservoir under the condition of high temperature pressure.
Owner:CHINA UNIV OF PETROLEUM (EAST CHINA)

Coal seam carbon dioxide groutability evolution whole process simulation device and method

The invention belongs to the technical field of coal bed gas exploitation and carbon dioxide geological storage, and relates to a coal bed carbon dioxide injectability evolution whole process simulation device and method, and the device comprises a true triaxial stress loading system, a temperature control system, a multi-mode gas injection system, a monitoring system, and a data processing system. The deep stratum stress state and the stratum temperature field are simulated, constant-pressure and constant-current mode carbon dioxide is injected into the true triaxial stress loading system to carry out groutability attenuation and recovery simulation, and nitrogen and pulse mode injection is switched to carry out temperature change regulation and control, phase change regulation and control and frequency change regulation and control so as to simulate groutability improvement. According to the method, a whole-process evolution mechanism of attenuation-recovery-improvement of carbon dioxide groutability is realized, meanwhile, data acquisition and permeability and stress calculation are performed through a monitoring system and a data processing system, and rapid conversion from original data to core parameters is realized; and accurate experimental data support is provided for on-site injection parameter optimization and regulation and control technology research and development.
Owner:SHIJIAZHUANG TIEDAO UNIV

Test method and equipment for characterizing distribution of etched sediments

The invention provides a test method and equipment for characterizing etching sediment distribution, and the method comprises the steps: arranging a sampling cabin on the side wall of an etching chamber, and placing a sampling piece in the sampling cabin; introducing radioactive isotope labeled etching gas to carry out an etching process; and performing radioisotope imaging analysis on the sampling piece to obtain distribution data of the etching sediment. The radioactive isotope labeled sediments are collected through the sampling piece to obtain the distribution of the sediments in the etching chamber, so that the adjustment precision of etching process parameters is improved, and the device yield is improved; meanwhile, the representativeness of sediment distribution data is improved through the position distribution of the sampling bins; in addition, a sampling piece is placed in the sampling bin, so that the sampling piece effectively reflects the actual distribution condition of sediments on the side wall of the etching chamber, and meanwhile, operation and maintenance are convenient; finally, after the sampling piece is taken out, dry ice cleaning and radioactive substance detection are carried out in the etching chamber, and the influence of radioactive substance residues on the sediment distribution detection accuracy in the future and the damage to the etching chamber are avoided.
Owner:SIEN (QINGDAO) INTEGRATED CIRCUITS CO LTD

X-ray focusing and wavelength selection

X-ray optics comprising: (i) achromatic collimation optics adapted to collimate an input X-ray beam to provide a collimated X-ray beam; (ii) an adjustable diffraction unit adapted to: (a) receive the collimated X-ray beam while being configured according to a current configuration associated with a current wavelength selected from among the different wavelengths, the current configuration being selected from among the different configurations associated with the different wavelengths; and (b) filtering the collimated X-ray beam to provide a filtered collimated X-ray beam of a current wavelength; and (iii) achromatic focusing optics configured to focus the filtered collimated X-ray beam to provide a focused filtered X-ray beam.
Owner:NOVA MEASURING INSTR LTD

Composite electronic detector, electronic detection equipment and detection method

The invention provides a combined type electronic detector, electronic detection equipment and a detection method, and belongs to the technical field of electronic microscopic imaging. The combined type electronic detector adopts a structure that yttrium aluminum garnet crystals are arranged to partially cover a split type silicon diode detector, so that physical replacement of any detection body is not needed, and the detection efficiency is improved. According to the invention, signals of different areas can be selected and read through an electronic mode, so that an optimal detection mode is called under different working conditions, detection can be realized under the condition of high acceleration voltage, detection can also be realized under the condition of low acceleration voltage, one machine with two purposes is realized, and the performance and the application range of electron beam equipment are greatly improved.
Owner:RESEARCH INSTITUTE OF TSINGHUA UNIVERSITY IN SHENZHEN +1

Optimal selection method of trace characteristic gas detection sensing material in transformer oil

The invention provides a method for optimizing a detection sensing material for trace characteristic gas in transformer oil, and belongs to the technical field of detection of gas in transformer oil, and the method comprises the following steps: firstly, obtaining basic data of candidate materials, including material composition, atomic structure, electron energy band structure and theoretical gas sensing performance parameters; and establishing a sensing performance prediction model considering the material composition and structure, and training a material-performance correlation model by using a machine learning algorithm. A large number of theoretical material data sets are generated through computer traversal, and multi-dimensional clustering analysis is performed on candidate materials to obtain a clustering center. And carrying out laboratory performance testing by taking a clustering center corresponding material as a to-be-tested set, and collecting actual performance data. And carrying out multi-generation iterative optimization on the material with the optimal performance by adopting a genetic algorithm to finally obtain the transformer oil trace characteristic gas detection sensing material. The problem that an existing gas sensing material is difficult to meet harsh requirements of an electric power system on online detection of a transformer in the aspects of sensitivity, selectivity and stability is solved.
Owner:ELECTRIC POWER RESEARCH INSTITUTE OF STATE GRID NINGXIA ELECTRIC POWER COMPANY

Optical scattering method based on inverse problem solving algorithm and mixed measurement method for batch samples

The invention relates to the technical field of optical measurement, in particular to an optical scattering method based on an inverse problem solving algorithm and a mixed measurement method for batch samples thereof, and the method comprises the following steps: carrying out optical measurement on samples to obtain actually measured optical signals; obtaining prior structure information of the sample; constructing an initial model; analyzing the initial model by utilizing strict coupling wave analysis to generate a simulation optical signal; judging whether the difference between the generated simulation optical signal and the actually measured optical signal meets a set requirement or not; if yes, outputting a measurement result; and if not, gradient calculation is carried out on each parameter in the initial model, gradients of all the parameters are obtained by utilizing an automatic differential algorithm, then the initial model is optimized by utilizing the gradients of the parameters to obtain an optimized model, and the step of analyzing by utilizing the strict coupling waves is repeatedly executed until a set requirement is met. According to the method, more detailed contour optimization can be provided, and the calculation efficiency can be improved.
Owner:SHANGHAI IDEAOPTICS CORP LTD

Control method and equipment of material moisture online monitoring system and storage medium

The invention discloses a control method and device of a material moisture online monitoring system and a storage medium, and relates to the technical field of material moisture monitoring, and the method comprises the steps: starting a neutron generator assembly, and starting a neutron detector assembly and a gamma detector when the starting duration of the neutron generator assembly is greater than or equal to the preheating preset duration; based on a detection result of the neutron detector assembly, determining an accumulated scattering neutron share of the detected material, and obtaining a corresponding target hydrogen density matched with the accumulated scattering neutron share from a preset association library; based on a gamma detector, counting the monitored gamma rays in a classified manner according to the pulse amplitude, generating a gamma-ray energy spectrum, and extracting a water hydrogen characteristic peak area from the gamma-ray energy spectrum; according to the target hydrogen density, the water-hydrogen characteristic peak area and the energy spectrum calibration coefficient of the gamma-ray energy spectrum, the curing hydrogen ratio is determined; and determining the free water content of the detected material according to the cured hydrogen ratio. According to the invention, through dual-mode cooperative detection, the problem of low accuracy of moisture monitoring is solved.
Owner:SHENZHEN KEERDA INTELLIGENT EQUIP CO LTD

Combination of multi-wavelength raman and spectral ellipsometry to measure film stacks

The thickness of the film stack of the workpiece and the composition of the film stack are determined using x-ray technology, spectroscopic ellipsometry (SE) and / or spectroscopic reflectometry (SR) and multi-wavelength Raman spectroscopy. The measurements are combined to form combined measured data. The combining includes regressing the second measurement and the third measurement. The combined measured data is then used to determine the thickness of the film stack and the composition of the film stack.
Owner:KLA CORP

Estimation of the crystallographic texture of an alloy

A modified differential evolution process including a reseed operation is performed to estimate a plurality of Euler angles indicating orientations of a specified quantity of crystals approximating the crystallographic texture extracted from the material test data, the reseed operation comprising retaining a data point at a first place of a first population of data points, and replacing all other data points of the first population of data points prior to continued iterations, wherein the first population of data points is a collection of a plurality of all data points and each data point comprises the specified quantity of Euler angles, and the data point at the first place of the first population of data points is the data point within the first population of data points that best fits the material test data.
Owner:THE BOEING CO

Rapid detection method for degradation performance of degradable plastic

The invention provides a rapid detection method for degradation performance of degradable plastics, and relates to the technical field of degradable plastics. The rapid detection method for the degradation performance of the degradable plastic specifically comprises the following steps: S1, establishing an auxiliary database; s2, designing rapid separation and purification; s3, using a Fourier transform infrared microscope; s4, detecting by using activated vermiculite; s5, debugging, and performing rapid separation and purification; and S6, combining the biodegradation rate and the heavy metal index. The rapid detection method for the degradation performance of the degradable plastic is very high in detection accuracy and reliability, supports a sustainable development policy and an ecological environmental protection target, and provides powerful technical support for improvement of the detection capability of enterprises in the industry.
Owner:ZHEJIANG TEXTILE TESTING & RES INST +1

Method for analyzing and determining aggregation structure in condensed state

The invention provides a method for analyzing and determining an aggregation structure in a condensed state, which comprises the following steps: step 1, measuring a same condensed state substance sample by adopting at least two structure determination means with different principles, at least another kind of structure measurement means is used for obtaining nanoscale or mesoscale aggregation structure information so as to obtain multi-source structure measurement data representing different structure hierarchies. According to the method, multi-scale structure measurement data is obtained by adopting at least two structure measurement means with different principles for the same condensed substance sample, and structure information of different scales is subjected to combined treatment in the same analysis process; and the structural characteristics of the aggregation structure on the atomic scale, the nanoscale and the mesoscale can be simultaneously included in an analysis range, so that the characterization integrity of the overall characteristics of the aggregation structure in the condensed state is improved.
Owner:JINING NORMAL UNIV

Novel antigen-binding chimeric proteins and methods and uses thereof

The present invention relates to the field of structural biology. More specifically, the present invention relates to novel antigen-binding chimeric proteins, their uses and methods in three-dimensional structural analysis of macromolecules, such as X-ray crystallography and high-resolution Cryo-EM, and their use as a therapeutic, diagnostic, or imaging tool. Even more specifically, the invention relates to a fusion of a scaffold protein and an antigen-binding domain wherein the scaffold protein of said fusion interrupts the Immunoglobulin domain topology to form a rigid chimer.
Owner:VLAAMS INTERUNIVERSITAIR INST VOOR BIOTECHNOLOGIE VZW +1

Method for synchronously analyzing thermodynamic phase and kinetic phase in electrode phase change process and related equipment

The embodiment of the invention discloses a method and related equipment for synchronously analyzing a thermodynamic phase and a dynamic phase in an electrode phase change process, a constant-current intermittent titration sequence is utilized, the dynamic phase and the thermodynamic phase of a to-be-detected electrode can be induced, synchronous acquisition is carried out at a specific moment in combination with in-situ X-ray diffraction, and the analysis result is accurate. Therefore, the kinetic phase and the thermodynamic phase of the to-be-tested electrode are distinguished, captured and defined by experimental means. Specifically, structure information collected in a constant-current pulse stage in a constant-current intermittent titration sequence corresponds to a kinetic phase and reflects transient and unbalanced structures in a phase change process; structural information collected after the open-circuit voltage relaxation stage meets a threshold condition corresponds to a thermodynamic phase and represents a stable structure tending to be balanced under the current composition; therefore, the dynamic phase and the thermodynamic phase of the electrode to be detected can be clearly analyzed. The method is widely applied to the technical field of material characterization.
Owner:SUN YAT SEN UNIV

Method for predicting spatial distribution of mechanical properties of aluminum-lithium alloy forgings

The invention discloses a method for predicting mechanical property spatial distribution of an aluminum-lithium alloy forging, and belongs to the field of forging mechanical property spatial distribution prediction.The method comprises the steps that XRD structure characterization samples, EBSD structure characterization samples, TEM structure characterization samples and tensile samples of different equivalent strain value target areas of aluminum-lithium alloy are obtained; based on XRD, EBSD and TEM representation results and tensile test results of all equivalent strain value target areas, an equivalent strain-T1 phase diameter relational expression and an equivalent strain-T1 phase thickness relational expression are constructed, then an equivalent strain-yield strength relational expression and an equivalent strain-elongation relational expression are obtained, and a finite element operation solver is compiled through secondary development; and utilizing a finite element operation solver to predict the mechanical property space distribution of the to-be-tested forge piece. The method solves the problem that the internal mechanical property spatial distribution of the aluminum lithium alloy forge piece is lack of accurate pre-judgment and is unpredictable.
Owner:CHONGQING UNIVERSITY OF SCIENCE AND TECHNOLOGY

A method and system for identifying unknowns in oilfield processes

The application provides an oil field process unknown object identification method and system, which identifies and calibrates the shape information and smell information of a target unknown object; comprehensively analyzes the basic identification result of the target unknown object, separates the unknown object sample according to a matched separation method selected according to the target unknown object, and obtains an organic matter part sample and an inorganic matter part sample of the unknown object; then, the organic matter part sample and the inorganic matter part sample of the target unknown object are identified by using set identification rules, and the composition and information of the organic matter part and the inorganic matter part of the unknown object are determined; finally, the composition and information of the target unknown object are comprehensively analyzed by comprehensively analyzing the basic identification result, the composition and information of the organic matter part and the inorganic matter part of the target unknown object. The scheme can overcome the problem that the existing technology is not comprehensive in identification purposes, quickly and reliably identifies and analyzes the composition of the oil field unknown object, and accurately provides scientific guidance for the safety production of the oil field in a timely manner.
Owner:CHINA PETROLEUM & CHEMICAL CORP +1