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29results about How to "Simplified processing steps" patented technology

Magnetic flocculant and application thereof in cutting fluid wastewater treatment process

The invention discloses a magnetic flocculant and application thereof in a cutting fluid wastewater treatment process, and relates to the technical field of sewage treatment. The preparation method of the magnetic flocculant comprises the following steps: impregnating modified magnetic nanoparticles in chitosan-poly-silicon ferrotitanium sulfate, carrying out ultrasonic treatment for 30-40 minutes, sucking out by using a high-strength magnet, drying at 50-60 DEG C, and repeating the steps of impregnating, sucking out and drying for 3-5 times to obtain the magnetic flocculant. The prepared flocculant is combined with an existing magnetic separation device, suspended particles and colloidal substances in the waste liquid are gathered to form flocs, meanwhile, organic matter in the waste liquid is adsorbed, and the purpose of efficiently and rapidly treating the grinding waste liquid is achieved through the magnetic attraction effect.
Owner:JIANGSU XINRUIJIE INTELLIGENT EQUIP CO LTD

Lipase mutants and uses thereof

The application belongs to the field of biopharmacy and bioconversion, and particularly relates to a lipase mutant and application thereof. The lipase CALB mutant of the application is obtained by adopting single-point mutation or combined mutation on positions 40, 134, 154, 189, 278 and 281 of the amino acid sequence shown in SEQ ID NO. 1. The mutant greatly improves the stereoselectivity in catalyzing the production of (S)-3-cyclohexene-1-methyl formate from racemic 3-cyclohexene-1-methyl formate. Compared with the traditional chemical method for preparing (S)-3-cyclohexene-1-methyl formate, the lipase CALB mutant provided by the application has high stereoselectivity, mild reaction conditions, is friendly to the environment, has reduced requirements on equipment, greatly reduces the production cost, and shows a wide application prospect in industrial application.
Owner:ZHEJIANG UNIV OF TECH +1

Ceramic filter material based on yellow river sediment and its preparation method

PendingCN122355729ARealize resource utilizationresolve disposal issues
This invention discloses a ceramic filter media based on Yellow River sediment. By mass percentage, the ceramic filter media comprises the following components: 66-82 wt% Yellow River sediment, 9-15 wt% high-alumina bauxite, 3-7 wt% iron oxide, and 6-12 wt% sodium-based bentonite; the mass ratio of SiO2, Al2O3, and Fe2O3 in the above system is 40-58:8-20:5-12. This application provides a high-value-added utilization method for Yellow River sediment, realizing the resource utilization of Yellow River sediment and solving the problem of Yellow River sediment disposal. The ceramic filter media prepared in this application has wide applications, including in wastewater treatment processes such as aerated biological filters and constructed wetlands. By utilizing solid waste to treat water pollution, it achieves "treating pollution with waste."
Owner:PUYANG TIANDIREN ENVIRONMENTAL PROTECTION TECH CO LTD

Solvent-free organic silicon release agent and preparation method thereof

The invention provides a solvent-free organic silicon release agent and a preparation method thereof. The release agent comprises vinyl polysiloxane, an inhibitor, hydrogen-containing silicone oil, expandable porous microspheres and a catalyst, wherein the expandable porous microspheres are subjected to corona treatment. The release agent can form a layer of porous expanded microsphere structure on the surface after being heated and cured, the specific surface area is sharply increased, and the unit contact area with an adhered object is greatly reduced, so that the silicon transfer is reduced.
Owner:WANHUA CHEM GRP CO LTD

Method for detecting glycoform content of antibody based on liquid chromatography-mass spectrometry

The invention provides a method for detecting the glycoform content of an antibody based on liquid chromatography-mass spectrometry, which comprises the following steps: (1) carrying out reduction reaction on an antibody sample to be detected and a reducing agent to obtain an antibody reduction subunit solution; and (2) detecting the antibody reduction subunit solution by adopting ultra-high performance liquid chromatography-mass spectrometry, and calculating to obtain the glycoform content of the antibody. According to the detection method provided by the invention, the sample pretreatment process is simple and rapid, the ultra-high performance liquid chromatography-mass spectrometer is also very efficient in determination, the detection time of a single sample is greatly shortened, the detection flux is improved, and strong and powerful support is provided for product development of biological drugs.
Owner:DRAGONBOAT BIOPHARMACEUTICAL (SHANGHAI) CO LTD

A method for determining the residual amount of chlorothalonil in fruits and vegetables

ActiveCN122361681Bavoid recyclingAvoid false negative issues
The present application belongs to the technical field of pesticide residue detection method, and particularly relates to a method for determining the chlorothalonil residue in fruits and vegetables, comprising the following steps: S1, extracting the fruit and vegetable sample by using an alkaline extraction solution to obtain an extraction solution; S2, adding a garlicin solution to the extraction solution; S3, adding a purification filler to the conversion solution, vortexing, centrifuging, filtering to obtain a to-be-tested solution; S4, using an ultra-high performance liquid chromatography-tandem mass spectrometer to detect the concentrations of mercaptochlorothalonil and 4-hydroxychlorothalonil in the to-be-tested solution, and calculating the total residue of chlorothalonil in the sample. The present application breaks through the traditional idea of inhibiting the conversion of chlorothalonil, actively promotes the complete and quantitative conversion of chlorothalonil into a single derivative through "alkaline extraction + exogenous garlicin catalysis", changes the complex and uncontrollable conversion process into a controllable and quantitative chemical reaction, and avoids the problems of low recovery rate and false negative caused by incomplete or unmeasurable conversion in principle.
Owner:SHANDONG JIENUO TESTING SERVICE CO LTD

MXene / MWCNT reinforced charcoal-based composite phase change material and preparation method thereof

The invention relates to the technical field of phase change materials, and discloses an MXene / MWCNT reinforced charcoal-based composite phase change material and a preparation method thereof, the preparation method comprises the following steps: S1, preparing MWCNT and a metal salt to obtain a suspension; adding biomass into the suspension, and drying to obtain a precursor; s2, performing heat treatment on the precursor to obtain biochar; blending and drying the biochar and a perfluorooctanoic acid ethanol solution to obtain a support material; s3, blending and drying the support material and an MXene solution to obtain an enhanced support material; s4, the enhanced support material is subjected to a vacuum impregnation method, and the bio-based composite phase change material is obtained. Compared with paraffin and unreinforced composite PCM, the heat conductivity of the composite PCM prepared by the invention is respectively improved by 313.77% and 26.3%. And by adopting the biochar-based support material, the paraffin encapsulation efficiency is improved again and reaches 85.18%.
Owner:NORTH CHINA ELECTRIC POWER UNIV

Pathological tissue embedding box

The utility model discloses a pathological tissue embedding box, which belongs to the technical field of medical instruments and comprises an embedding box body, an embedding groove is arranged on the top surface of the embedding box body, and a penetrating opening is arranged on the top surface of the embedding box body. The embedding assembly comprises a fixed seat, a convex groove barrier, a movable grid plate and a bottom clamping plate, and the fixed seat is fixedly connected to the top surface of the embedding box body. According to the pathological tissue embedding box, embedding operation is carried out through the embedding box body, mechanical damage caused by multiple times of transfer is reduced, the integrity of tissues is guaranteed, samples are provided for accurate pathological diagnosis, pathological tissue treatment steps are simplified through the integrated operation process, time and manpower input needed by tissue transfer are reduced, and the working efficiency is improved. The number of times of tissue transfer is reduced, the probability of occurrence of errors such as tissue confusion and loss caused by manual operation is effectively reduced, the reliability and stability of a pathological detection result are improved, and the pathological diagnosis work quality is improved.
Owner:ZHUJIANG HOSPITAL OF SOUTHERN MEDICAL UNIVERSITY

Rubber leaf original state dinner plate and manufacturing method

PendingCN119610516AImprove the level of environmental protectionSimplified processing stepsSolid waste disposalDomestic articlesFiberAdhesive
The invention provides a rubber leaf original-state dinner plate and a manufacturing method thereof, the dinner plate is manufactured by taking original-state rubber leaves as main raw materials and rubber leaf powder as auxiliary materials and adopting a hot press molding process, and the manufacturing method comprises the specific steps of screening, cleaning, drying, crushing, paving, pre-pressing, feeding, hot press molding, shaping, trimming, packaging, warehousing and the like. No additive is added in the dinner plate forming process, viscous substances are generated at high temperature and high pressure through lignin and other components contained in the rubber leaves, the effect similar to that of an adhesive is achieved, glue-free gluing is achieved according to the self-adhesion principle, and the dinner plate is green, healthy and environmentally friendly. According to the method, original state forming is used for replacing powder forming or slurry forming and other modes, the possibility that powder or fine fibers fall off and are inhaled by a human body to cause potential hazards is avoided, residual materials obtained after trimming can be smashed again to be used for powder layer paving, energy consumption in the machining process can be reduced, the production efficiency is high, and the production cost is low. The method is a green tableware manufacturing method which can be widely applied.
Owner:NANJING FORESTRY UNIV

Blood component monitoring method and device based on visual identification technology

The invention discloses a blood component monitoring method and device based on a visual identification technology. The device comprises a sensor host and a sensor probe. The sensor host comprises a bottom shell, an image processing mainboard, an elastic buckle, an upper cover, a key, a display unit, a lock ring and a mounting bracket; the image processing mainboard and the elastic buckle are fixed on the bottom shell, the key and the display unit are fixed on the upper cover, and the upper cover and the bottom shell are fixed through the locking ring and are integrally installed on the installation support. The sensor probe comprises a probe shell, a probe fixing plate and a camera. The image of the centrifugal cup in the blood centrifugal separation process is collected through the camera, the blood components are analyzed through the image recognition technology, and accurate recognition of the blood components is achieved; and meanwhile, the mounting position of the centrifugal cup can be automatically monitored. The device is simple in structure, reliable in performance and low in cost, and has higher recognition accuracy and efficiency compared with a traditional photoelectric sensor recognition method.
Owner:SCINOMED (SHANGHAI) BIO-TECH CO LTD

Preparation method of anti-yellowing high-stability bio-based 1, 5-pentamethylene diisocyanate product

The invention relates to a preparation method of a bio-based 1, 5-pentamethylene diisocyanate product with yellowing resistance and high stability. A synergistic composite stable system composed of an efficient main antioxidant, an auxiliary antioxidant and a plurality of ultraviolet absorbents / light stabilizers in a scientific proportion is constructed. Wherein the main antioxidant is mainly used for capturing free radicals and blocking an oxidation chain reaction; the auxiliary antioxidant decomposes hydroperoxide to inhibit the hydroperoxide from further initiating the degradation of the material; the ultraviolet stabilizer effectively delays the color change process caused by illumination by absorbing or quenching excited state energy. The preparation method disclosed by the invention has the advantages of high process compatibility, easiness in acquisition of auxiliaries, simple compounding and post-treatment steps and convenience in large-scale popularization; the environmental protection property is outstanding, the yellowing resistance and the storage stability of the product are greatly improved, the normal-temperature closed storage period is prolonged to 6 months or above, the NCO content retention rate is greater than or equal to 96%, and the storage and transportation cost is reduced; the influence of thermal oxidation and photodegradation is resisted, and a complex application environment is adapted.
Owner:GANSU YINGUANG JUYIN CHEM IND CO LTD

Quick dismounting connecting mechanism and modular curtain wall

The utility model discloses a quick dismounting and connecting mechanism and modularization curtain wall belongs to building curtain wall technical field. The curtain wall includes the cross -shaped frame of main installation frame and the side installation frame of both sides and a plurality of curtain wall main parts and connecting assembly. The preliminary positioning is realized to curtain wall main part through the sliding fit of sliding slot and support rod, and the transverse and longitudinal spacing is realized through the bumping of first abutting convex strip, second abutting convex strip and the protruding block on connecting support. The locking assembly adopts the locking wheel with eccentric hole, and the fixing of curtain wall main part is realized after rotating and clamping into locking groove, and the perpendicular direction spacing is enhanced through the clamping of semicircle ring and limiting groove. U-shaped elastic plate and second end cover are used for shielding the gap between curtain wall board, and can adapt to the deformation caused by temperature change. The structure realizes the quick positioning, double locking and gap shielding of curtain wall, improves the installation precision, efficiency and long -term stability, and is convenient to dismount and maintain.
Owner:SHAANXI JIEXIN CONSTR ENG CO LTD

A cardboard warping pretreatment cutting device and cutting method

The present invention discloses a cardboard warping pretreatment cutting device and a cutting method, which relate to the field of cardboard processing technology, and include a shell, a conveyor belt is fixedly arranged at the bottom of the inner side of the shell, a driving mechanism is arranged at the top of the inner side of the shell, a hot pressing mechanism is arranged at the bottom of the driving mechanism, and a cutting mechanism is arranged at the outer side of the driving mechanism, a supporting mechanism is arranged at the inner side of the conveyor belt, and a blocking and positioning mechanism is arranged at the rear side of the top of the supporting mechanism; the blocking and positioning mechanism blocks the warped cardboard, and the driving mechanism drives the hot pressing mechanism and the cutting mechanism to move downward synchronously. The present invention can complete the hot pressing and leveling and positioning of the warped cardboard before cutting, so as to ensure the subsequent cutting accuracy and reduce the defective rate. At the same time, the cardboard after cutting does not need to be sprayed with steam and hot pressed, which simplifies the processing steps and saves manpower.
Owner:NINE DRAGONS PACKAGING (CHENGDU) CO LTD

Method for preparing thiamine hydrochloride

PendingCN121949310Areduce dosageSimplified processing stepsOrganic chemistryOrganic solventThiamine nitrate
The invention relates to the field of compound preparation, in particular to a method for preparing thiamine hydrochloride. The method comprises the following steps: carrying out contact reaction on thiamine nitrate, ammonium chloride and hydrogen chloride under the condition of an organic solvent, and separating reaction liquid to obtain thiamine hydrochloride solid. Compared with the prior art, ammonium chloride is used for replacing part of hydrochloric acid to participate in the reaction in the thiamine hydrochloride production process, so that the dosage of hydrochloric acid is reduced, equipment corrosion can be reduced, subsequent wastewater treatment steps are simplified, the product yield is not influenced, the content of other impurities is not increased, new production equipment is not added, and the production cost is effectively saved; furthermore, the materials are recycled, so that a more environment-friendly and cost-saving process route can be realized.
Owner:IANGXI TIANXIN PHARM CO LTD

An application for mercury ion detection in water environment based on a non-noble metal-doped Raman substrate

This invention discloses an application for mercury ion detection in water environments based on a non-precious metal-doped Raman scattering substrate, belonging to the field of environmental monitoring technology. The invention involves preparing a non-precious metal-doped surface-enhanced Raman scattering substrate; preparing aminated closed-ring Rhodamine 6G; preparing mercury ion standard solutions of different concentrations; and using the prepared surface-enhanced Raman scattering substrate for detection. A standard curve is plotted based on the peak values ​​at characteristic Raman shifts of the obtained standard solutions at different concentrations and the concentrations of the mercury ion standard solutions. The obtained surface-enhanced Raman scattering substrate is used to detect pretreated water samples, and the peak values ​​at characteristic Raman shifts are compared with the standard curve to obtain the concentration of mercury ions in the water sample. This method exhibits high repeatability and stability under different pH values, different salt ion concentrations, different storage temperatures, and different solvents. It also shows specific selectivity for mercury ions, enabling rapid, accurate, and trace detection of mercury ions in water samples.
Owner:KUNMING UNIV OF SCI & TECH

Recovery treatment method of electroplating grinding wastewater

The present invention relates to the technical field of electroplating grinding wastewater recovery, and discloses an electroplating grinding wastewater recovery treatment method, which comprises: arranging a flow divider perpendicular to the conveying direction of a conveyor belt on the conveyor belt, the flow divider being used for uniformly dividing to-be-treated sludge into a plurality of strip-shaped sludge; all the strip-shaped sludge divided by the flow divider forms sludge groups, and the sludge groups corresponding to the strip-shaped sludge with the first quantity, the second quantity,..., and the nth quantity are respectively marked as a first sludge group, a second sludge group,..., and an nth sludge group; squeezing and dewatering the sludge group; executing an overflow judgment strategy, and judging whether the sludge group is a candidate sludge group or not; obtaining the candidate sludge group with the lowest water content and recording the candidate sludge group as a target sludge group; obtaining a mud cake corresponding to the target sludge group, and recording the mud cake as a target mud cake; a pressure supplementing strategy is executed, and rollers are added for pressure supplementing when the to-be-treated sludge is squeezed and dewatered; targeted pressure supplement is achieved, the squeezing effect is optimized, and residual moisture is reduced.
Owner:DONGGUAN PURUIDE METALS-PLASTICS&PROD CO LTD

A high-concentration wastewater treatment system

ActiveCN224704463Uextended staySimplified processing steps
This utility model discloses a high-concentration wastewater treatment system, belonging to the field of wastewater treatment. It includes a storage tank, an A-tank, an O-tank, and an anaerobic tower. The A-tank and O-tank are connected by a pipeline. The storage tank has a wastewater inlet, and its wastewater outlet is connected to the A-tank and the anaerobic tower respectively through separately controlled valves. The A-tank and O-tank are connected by an AO return pipeline, which is equipped with a return pump. The wastewater treatment end of the anaerobic tower is connected to the wastewater treatment front end of the anaerobic tower through an anaerobic return pipeline, which is also equipped with a return pump. This utility model, combined with conventional wastewater treatment equipment in existing production processes and supplemented by minor structural improvements, can directly achieve automatic wastewater treatment, reducing unnecessary treatment steps and lowering treatment costs.
Owner:ANHUI SHENGNUOBEI CHEM TECH

Unmanned aerial vehicle-based remote sensing image acquisition and processing method and system, and storage medium

PendingCN119624884ASimplified processing stepsincrease contrastImage enhancementImage analysisTerrainLandform
The invention discloses a remote sensing image acquisition and processing method and system based on an unmanned aerial vehicle, and a storage medium, and relates to the field of remote sensing image analysis. Collecting a visible light image and a thermal infrared image of the landform data by using an unmanned aerial vehicle; for the visible light image, terrain and river features are obtained from landform data, structured light and multi-view stereoscopic vision are adopted to carry out three-dimensional reconstruction on the terrain and river features, and a Canny edge detection algorithm is adopted to identify edge information in a three-dimensional reconstruction image; for the thermal infrared image, based on single-channel temperature data, binarization processing is carried out on the image by setting a fixed temperature threshold value, and masks of a water body area and a non-water body area are generated; and matching the edge information with the mask, and identifying the position of the river bank line. According to the method, RGB and thermal infrared (TIR) images are combined, and through the structured light and multi-view stereoscopic vision technology, edge detection and a machine learning algorithm, accurate analysis of the river form and identification of a torrential zone and a calm zone are achieved.
Owner:THE UNIV OF NOTTINGHAM NINGBO CHINA

Tar residue crushing device and treatment process

The invention discloses a tar residue crushing device and a treatment process, and belongs to the technical field of coking, and the tar residue crushing device comprises a pretreatment part for spraying high-temperature water to tar residues and liquefying and decomposing the tar residues to soften the tar residues; the tar residue crusher is used for receiving the tar residues output by the pretreatment part and crushing the tar residues; and the separation part is used for receiving the tar residue output by the tar residue crusher and dividing the tar residue into solid, liquid and gas. By means of the steps, solid, liquid and gas separation can be conducted on the tar residues, waste is turned into wealth, harmless treatment is achieved, and earnings are increased. Finally, self-digestion, zero emission and no pollution of the tar residue can be realized, so that the target of resource recycling of the coking waste is realized.
Owner:TIANJIN IRON WORKS CO LTD

Rapid determination method for volatile organic acid in electronic atomized liquid

The invention provides a method for rapidly determining volatile organic acids in electronic atomized liquid, which comprises the following steps: respectively adding a derivatization reagent, an internal standard solution and a solvent into the electronic atomized liquid, extracting, carrying out derivatization reaction on the obtained sample liquid to be detected, and then determining by using a gas chromatography-mass spectrometry method, and determining the content of at least one volatile organic acid component in the liquid to be detected. According to the rapid determination method for the volatile organic acid in the electronic atomized liquid, provided by the invention, the volatile organic acid in the electronic atomized liquid can be rapidly, simply, conveniently and efficiently determined at low cost.
Owner:DONGGUAN HONGFU BIOTECHNOLOGY CO LTD

Method for measuring component content of perfluoroelectrolyte for aluminum electrolytic refining

The invention discloses a method for determining the component content of a perfluoroelectrolyte for aluminum electrolytic refining, which comprises the following steps: preparing a series of standard samples including the element content range of the perfluoroelectrolyte in the aluminum electrolytic refining by adopting a high-purity reagent, preparing a sample by adopting a fuse piece method, performing XRF (X-Ray Fluorescence) determination and drawing a calibration curve, and determining the component content of the perfluoroelectrolyte in the aluminum electrolytic refining. And preparing a detection sample by adopting the same sample preparation mode, quantitatively measuring the contents of aluminum, sodium, barium and calcium elements in the to-be-detected sample by utilizing XRF (X-Ray Fluorescence), and calculating the component content of the perfluoroelectrolyte. According to the method, the content of each element of the perfluoroelectrolyte in the aluminum electrolytic refining can be rapidly measured before the cell, the sample preparation is simple, the operation is convenient, the accuracy is high, the precision is high and the like, the real-time detection of the perfluoroelectrolyte components in the aluminum electrolytic refining can be realized, the accurate regulation and control are further realized, and the smooth electrolysis is ensured.
Owner:ZHENGZHOU UNIV

Analytical Method for Genotoxic Impurity Content of N-Nitrosodiclofenac in Chemical Drugs

ActiveCN119198986BHigh detection sensitivityGuaranteed accuracyNitrosoMass chromatography
The present invention belongs to the technical field of analysis and detection, and specifically relates to an analysis method for the content of N-nitroso diclofenac genotoxic impurities in chemical drugs. The analysis method uses a triple quadruple liquid-mass spectrometer to determine the content of N-nitroso diclofenac impurities in chemical drugs, using a 50 vol% acetonitrile aqueous solution (containing 0.1 vol% formic acid) as a solvent and dichloromethane as an extractant, and uses a standard curve method to analyze the content of N-nitroso diclofenac impurities. By dissolving the test sample with a solvent first and then extracting it with an extractant, the problems of low impurity limit, complex and easy interference of the test sample matrix, and easy false positive caused by the impurity structure being similar to the main component of the test sample are overcome, and at the same time, the sensitivity of N-nitroso diclofenac impurities is improved by high performance liquid chromatography-mass spectrometry, and the detection method is efficient and accurate.
Owner:ZIBO HIGH TECH IND DEV ZONE BIOMEDICAL RES INST

Process for the preparation of molipiravir

The application belongs to the technical field of medicine synthesis, and particularly relates to a preparation method of Mupiravir. The selected synthesis route is simple in operation and simplifies the post-reaction treatment steps. After the reaction is completed, the organic phase is separated from the aqueous solution of hydroxylamine sulfate and sodium acetate, the recovery rate of the solvent can be maximized due to the absence of dangerous hydroxylamine sulfate, more importantly, the decomposition of hydroxylamine sulfate is avoided, the production safety is higher, the production is green and environmentally friendly, and the method is more suitable for the popularization of industrialized safe mass production.
Owner:山东诚汇双达药业有限公司

Application of polyethersulfone membrane in enrichment of bacterium-containing specimens

The invention belongs to the technical field of medical detection, and particularly relates to a method for treating a bacterium-containing sample by using a polyether sulfone (PES) membrane. In particular discloses application of a polyether sulfone membrane in bacterium-containing specimen treatment, the treatment application of the polyether sulfone membrane is impurity removal and / or thallus enrichment of the bacterium-containing specimen, when the application of the polyether sulfone membrane is impurity removal of the bacterium-containing specimen, the polyether sulfone membrane is selected from a large-aperture membrane, the aperture is selected from 0.8-5 [mu] m, and the aperture is selected from 0.8-5 [mu] m. The application of the polyethersulfone membrane is that when thalli of a bacterium-containing specimen are enriched, the polyethersulfone membrane is selected from small-aperture membranes, and the small aperture is selected from 0.22-0.8 [mu] m. When the system is used for treating bacterium-containing samples, the loss rate of thalli is low, the biological activity of the thalli is guaranteed, compared with an existing bacterium-containing sample treatment system, the treatment steps are simplified, the steps of repeated centrifuging, washing and the like of the samples are omitted, meanwhile, the dyeing and biological detection effects are further improved due to the fact that the loss rate of the thalli is reduced, and the detection efficiency is improved. The positive detection rate is improved.
Owner:BEIJING CHEST HOSPITAL CAPITAL MEDICAL UNIV +2

Jingyang Fuzhuan tea year discrimination method

The invention discloses a Jingyang Fuzhuan tea year distinguishing method, and belongs to the technical field of tea year distinguishing. Fuzhuan tea samples in different storage years are measured and analyzed by adopting a headspace solid-phase micro-extraction gas chromatograph-mass spectrometer, a Fuzhuan tea storage year predicting model is constructed according to the characteristics of volatile organic compounds and by integrating a machine learning method, and the Jingyang Fuzhuan tea year distinguishing method is used for distinguishing the Jingyang Fuzhuan tea years. And judging the storage year of the Fuzhuan tea through the prediction model. The Jingyang Fuzhuan tea year distinguishing method is simple in treatment step, convenient to operate and suitable for large-scale sample treatment and screening, and the headspace solid-phase microextraction gas chromatograph-mass spectrometer technology is stable and mature; a linear regression model and a support vector machine classification model are established by using the content values of the 10 compounds, and the specific storage year of the Fuzhuan tea can be predicted by combining an error reference value, so that the operation is simple, convenient and objective, the interference of human factors is eliminated, and the accuracy of identifying the storage year of the Fuzhuan tea can be remarkably improved.
Owner:NORTHWEST UNIV

Thermal flow sensor and preparation method thereof

The invention provides a thermal flow sensor and a preparation method thereof.The thermal flow sensor comprises a substrate, a partition plate, a measurement structure, a protection layer, a first bonding pad, a second bonding pad and an output bonding pad, and a cavity is formed in the substrate; the partition plate is positioned on the upper surface of the substrate and above the opening of the cavity; the measuring structure is located on the upper surface of the partition plate and comprises temperature-sensitive resistors, a main temperature measuring element, a heating element and an isolating layer, the main temperature measuring element is located above the cavity and is symmetrical about the center line, perpendicular to the Y direction, of the cavity, the heating element is located above the cavity and is symmetrical about the center line, perpendicular to the Y direction, of the cavity, and the temperature-sensitive resistors are located on the two sides of the main temperature measuring element; the protective layer covers the exposed upper surface of the measurement structure; the first bonding pad, the second bonding pad and the output bonding pad are electrically connected with the two ends of the temperature-sensitive resistor, the heating element and the main temperature measuring element respectively. The main temperature measuring element and the heating element which are symmetrical about the center line, perpendicular to the Y direction, of the cavity are arranged over the cavity, and the influence of external heat radiation is avoided.
Owner:CRM ICBG (WUXI) CO LTD

River channel underwater terrain reconstruction method based on section data

ActiveCN119579820AReduce computational workloadSimplified processing steps3D modellingTerrainData ingestion
The invention discloses a river channel underwater terrain reconstruction method based on section data. The method comprises the following steps: S10, drawing a desilting area boundary; s20, upstream and downstream river reach ranges of the desilting area are extracted; s30, extracting terrain data of the digital elevation model; s40, arranging sampling points; s50, calculating the elevation of the sampling point; and S60, reconstructing the digital elevation model. According to the river channel underwater terrain reconstruction method based on the section data, sampling point encryption is only carried out on the dredging part of the river section, the data processing step is simplified, the calculation efficiency is improved, and the quality of the digital elevation of the river channel underwater terrain is improved.
Owner:NINGBO HONGTAI WATER RESOURCES INFORMATION TECH CO LTD

Method for measuring component content of fluorine-chlorine electrolyte for aluminum electrolytic refining

The invention discloses a method for measuring the component content of fluorine-chlorine electrolyte for aluminum electrolytic refining, which comprises the following steps of: preparing a series of standard samples including the content range of fluorine-chlorine electrolyte elements in aluminum electrolytic refining by adopting a high-purity reagent, preparing a sample by adopting a tabletting method, measuring and drawing a calibration curve by XRF (X-Ray Fluorescence), and determining the component content of fluorine-chlorine electrolyte for aluminum electrolytic refining. And preparing a detection sample by adopting the same sample preparation mode, quantitatively measuring the contents of fluorine, aluminum, sodium, barium and chlorine elements in the to-be-detected sample by utilizing XRF (X-Ray Fluorescence), and calculating the component content of the fluorine-chlorine electrolyte. The method has the advantages that the content of each element of the fluorine-chlorine electrolyte in the aluminum electrolytic refining can be rapidly measured before the cell, the sample preparation is simple, the operation is convenient, the accuracy is high, the precision is high and the like, and the fluorine-chlorine electrolyte components in the aluminum electrolytic refining can be detected in real time, so that accurate regulation and control are realized, and the smooth electrolysis is ensured.
Owner:ZHENGZHOU UNIV

High-performance microcrystalline glass based on multi-source solid waste and preparation method of high-performance microcrystalline glass

ActiveCN119638200ARealize high-value utilizationresolve disposal issuesSlagGlass-ceramic
The invention discloses high-performance microcrystalline glass based on multi-source solid waste and a preparation method thereof.The preparation method comprises the following steps that S1, oil-based rock debris deoiling residues and phosphorus slag are obtained, and the oil-based rock debris deoiling residues and the phosphorus slag are crushed, dried, ball-milled and sieved respectively to obtain residue powder and phosphorus slag powder; s2, component detection is conducted on the phosphorus slag powder, and the content of MgO in the phosphorus slag powder is determined; uniformly mixing the residue powder, the phosphorus slag powder and fly ash according to a detection result, and melting to obtain basic glass liquid; s3, performing water quenching on the basic glass liquid to obtain basic glass, and performing drying, ball milling and sieving on the basic glass to obtain basic glass powder; and S4, preparing the basic glass powder into a glass ceramic original sample, sintering the glass ceramic original sample, and naturally cooling to obtain the high-performance glass ceramic. According to the method, the high-performance glass ceramics can be prepared by cooperating with two solid wastes, namely the oil-based rock debris deoiling residues and the phosphorus slag, and synergistic high-value utilization of the multi-source solid wastes is realized.
Owner:SOUTHWEST PETROLEUM UNIV