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Fluorescent reagent for detecting specificity of aluminium ions based on aggregation-induced emission principle
InactiveCN102313726AThe synthesis method is simpleHigh yieldFluorescence/phosphorescenceLuminescent compositionsLinear relationshipLinearity
The invention discloses a fluorescent reagent for detecting specificity of aluminium ions based on an aggregation-induced emission principle. The fluorescent reagent is represented as sodium4-(2, 5-diphenyl-1H-pyrrole-1-yl)benzoate (TriPP-COONa). The fluorescent reagent has fluorescence enhancement specific response to the aluminium ions, has the detection limit of 1 mu M (27 mu g / L) which is lower than the aluminium ion concentration (no higher than 200 mu g / L) in drinking water stipulated by the World Health Organization, is free of the interference of other ions, such as K+, Mg2+, Ca2+, Ba2+, Ni2+, and has short response time. The fluorescence intensity of the fluorescent reagent has good linear relationship within the aluminium ion concentration range of 1 mu M to 11 mu M. According to the linear equation in the invention, the quantitive detection of the concentration of aluminium ions in the water sample can be realized conveniently and rapidly.
Owner:BEIJING INSTITUTE OF TECHNOLOGYGY +1
Password input method based on touch screen, and touch terminal
InactiveCN103729605AEliminate the risk of password disclosureEnsure safetyInternal/peripheral component protectionInput/output processes for data processingInformation acquisitionTouchscreen
The invention discloses a password input method based on a touch screen, and a touch terminal. The password input method includes the steps of firstly, obtaining touch information of the touch screen through a password controller when a user inputs a password through the touch screen; secondly, obtaining password information through the password controller according to the touch information; thirdly, sending the password information to an upper computer system through the password controller. According to the password input method based on the touch screen, by adding the password controller which is completely independent of a central processing unit, the password is inputted and transmitted through the special password controller, interference and processing which are conducted on the password information through the central processing unit are completely avoided, the password information is prevented from being obtained by a fake program through the central processing unit and a memorizer, the risk that the password is revealed is eliminated, and security of the password inputted through the touch screen is improved. Meanwhile, the universal touch screen can be used in the method instead of a special touch screen, and therefore implementation cost is low, and the industrial advantages are achieved.
Owner:深圳市中航软件技术有限公司
Method for improving CO2 adsorption of MOF (metal-organic framework) material
InactiveCN106268700AImprove hydrophobicityImprove water stabilityGas treatmentOther chemical processesOrganic synthesisMetal-organic framework
The invention discloses a method for improving CO2 adsorption of an MOF (metal-organic framework) material and belongs to the technical field of preparation of inorganic-organic hybridization. The method specifically comprises steps as follows: various porous MOF materials are prepared through synthesis with specific methods, various o-diyne aromatic compound monomers are synthesized with organic synthesis methods, organic monomers enter pore channels of the MOF materials through soaking, through simple thermal initiated polymerization reactions, the organic monomers are subjected to polymerization reactions in the pore channels of the MOF materials, and the MOF composite material is obtained. The polymer produced with the method can divide the pore channels of the MOF materials into smaller pore chambers suitable for capture of CO2, so that the CO2 adsorption capacity and selectivity of the MOF materials are improved. The thermal initiated polymerization method is easy to operate, the processing and molding speed is high, the cost of raw materials is low, and the method has industrial advantages.
Owner:BEIJING INSTITUTE OF TECHNOLOGYGY
Fluorescent material for five-membered heterocyclic compound specific detection and preparation method
ActiveCN104327842AQuick responseHigh fluorescence intensityNickel organic compoundsCobalt organic compoundsHigh energyVolumetric Mass Density
Belonging to the field of fluorescent sensors, the invention discloses a fluorescent material for five-membered heterocyclic compound specific detection and a preparation method. The fluorescent material is formed by organic carboxyl ligand and metal coordination, and is called TABD-MOFs for short, and the molecular formula is M(C30H22O4)x(C3H7NO)y. The fluorescent material is obtained by: mixing a DMF solution of metal nitrate, a DMF solution of TABD-COOH, water and ethanol evenly, carrying out reaction at 85DEG C for a period of time, and then conducting filtering and washing. The fluorescent material quickly responds to five-membered heterocyclic high-energy density compounds and has high sensitivity and high selectivity, the detection method is simple and easy to operate, thus being able to completely breaking away from dependence on high precision instruments according to actual needs.
Owner:BEIJING INSTITUTE OF TECHNOLOGYGY
Method for extracting esculetin from herba violae
InactiveCN102060822AImprove adsorption capacityGood effectOrganic chemistryLapsana communisViola mirabilis
The invention relates to a method for extracting esculetin from herba violae. The method comprises the following steps: using herba violae as a raw material to grind, adding 7-15 times of 60-90% ethanol to perform backflow extraction for 2-3 times; filtering, recycling ethanol under reduced pressure, diluting the concentrated solution with hot water; adding macroporous resin for adsorption; washing resin column with water to ensure that the solution has no caramel colour; using 4-6 BV of 50-80% ethanol to elute the active ingredient, recycling ethanol from eluent; adjusting the acidity of the hot solution for precipitation, filtering out the precipitate, dissolving the precipitate with ethyl acetate through refluxing; adding the solution in an aluminum peroxide column, recycling the obtained solution in a small-column container, and standing for crystallization; dissolving the obtained crystals with ethanol to perform refluxing and recrystallization; and drying the obtained crystals to obtain the esculetin product. By adopting the method to produce esculetin, the technology is simple, is easy to operate, has low production cost and high product purity.
Owner:NANJING ZELANG MEDICAL TECH
Transient voltage suppressor and manufacturing method thereof
PendingCN108198810AReduce the difficulty of productionStable device parameters and performanceSolid-state devicesDiodeTransient voltage suppressorCapacitance
The invention discloses a transient voltage suppressor and a manufacturing method thereof. The transient voltage suppressor comprises a first doping type of semiconductor substrate, a first doping type of first epitaxial layer, a first doping type of second epitaxial layer, a plurality of first doping regions and a plurality of second doping regions, wherein the second epitaxial layer is arrangedon a first surface of the semiconductor substrate and covers the first epitaxial layer, the plurality of first doping regions are formed in the semiconductor substrate, each second doping region is formed in the second epitaxial layer or penetrates through the second epitaxial layer and is connected with the corresponding first doping region, the plurality of first doping regions, the plurality ofsecond doping regions, the semiconductor substrate and the second epitaxial layer are used for forming a bidirectional suppression circuit, and the bidirectional suppression circuit comprises a firstrectification diode, a second rectification diode, a first transient suppression diode and a second transient suppression diode. The transient voltage suppressor provided by the invention has a bidirectional voltage suppression function, is low in capacitance and small in volume and is simple to fabricate, and electrodes are respectively led out of a front surface and a back surface.
Owner:BEIJING YANDONG MICROELECTRONICS
Transient voltage suppressor and manufacturing method thereof
ActiveCN108198811AShould be able to improveReduce manufacturing difficultySolid-state devicesDiodeElectricityCapacitance
The invention discloses a transient voltage suppressor and a manufacturing method thereof. The transient voltage suppressor includes: a semiconductor substrate; an epitaxial layer arranged on a firstsurface of the semiconductor substrate; a first buried layer and a second buried layer, wherein a first part of the first buried layer and the second buried layer form a first transient voltage suppressing tube, a second part of the first buried layer and the semiconductor substrate from a second transient voltage suppressing tube, and the first part and the second part of the first buried layer are not connected with each other; a plurality of isolation areas extending from a surface of the epitaxial layer to the interior of the first buried layer or the second buried layer; a plurality of well regions extending from the surface of the epitaxial layer to the interior of the epitaxial layer, wherein the first part of the first buried layer and the semiconductor substrate form a PN junction, and the first part of the first buried layer and the semiconductor are electrically connected so as to allow short out of the PN junction. The transient voltage suppressor has a bidirectional transient voltage suppressing function, is low in capacitance, is small in size, is easy to manufacture, and can lead electrodes from a front surface and a back surface.
Owner:BEIJING YANDONG MICROELECTRONICS
Processing method of recycled illegal cooking oil
InactiveCN102304417AReduce pollutionSimple processFatty oils/acids recovery from wasteFatty acid hydrogenationPhosphoric acidWaste oil
The invention relates to a processing method of recycled illegal cooking oil, which comprises the following steps of: firstly, filtering impurities of collected illegal cooking oil, swilling oil and waste oil and depickling the collected illegal cooking oil, swilling oil and waste oil, then placing the collected illegal cooking oil, swilling oil and waste oil in an agitated reactor, adding 3-6% of carclazyte and 0.5-1.5% of phosphoric acid, mixing, heating and uniformly stirring, heating the uniformly stirred materials, naturally cooling to 34 DEG C-37 DEG C after settling and decomposing, filtering to obtain liquid oil and semi-solid carclazyte after settling and splitting phase, wherein the acid value of oil of the illegal cooking oil, swilling oil and waste oil is reduced from 3.5mg / koh / g to 0.9-1.4mg / koh / g, drying or naturally drying the semi-solid carclazyte in air, then placing the liquid oil and the semi-solid carclazyte in the agitated reactor, adding 3% of cation expression activity emulsifying agent, stirring at high speed for 20-50 minutes at the temperature of 50 DEG C-80 DEG C to enable fatty acid and triglyceride to be micro-emulsified, then adding 0.1% of ionic catalysis stabilizing agent, under the condition of 100-150Mpa pressure, and finally pumping hydrogen for 15-25 minutes by 0.5 per cubic meter per second to obtain biomass fuel. The processing method has the advantages of simple process, low cost, little energy consumption and high efficiency.
Owner:HEILONGJIANG CHUNYI ENVIRONMENTAL PROTECTION TECH DEV
Preparation method for optically active diamino derivative
ActiveCN108689878AHigh optical purityHas the advantage of industrializationCarbamic acid derivatives preparationOrganic compound preparationArylHalogen
The invention provides an optically active diamino derivative, and intermediates and a preparation method thereof. The intermediates comprise intermediates F1 and F with a (1R,2R,5S) configuration; and the optically active diamino derivative is a compound with a (1R,2S,5S) configuration and as shown in a formula H. F1, F and H are described in the specification. In F1, F and H, R1 is an alkyl amino-protecting group or an aryl amino-protecting group, e.g., a benzyl group, an alkyl-substituted benzyl group, an alkoxy-substituted benzyl group, an alkoxycarbonyl group or a benzyloxycarbonyl group;R2 is an alkoxycarbonyl, alkyl or aryl amino-protecting group, e.g., a tertbutyloxycarbonyl group, a benzyloxycarbonyl group or a methoxycarbonyl group; X is a hydroxyl group, halogen, OMs, OTf or OTs; R is an alkoxy group or as described in the specification; and R3 is an amino group protected by an amide amino-protecting group, imine groups such as phthalimido, succinimido or naphthalimido groups, diphenyl azidophosphate, -N3, an amino group or a substituted amino group.
Owner:ZHEJIANG JIUZHOU PHARM CO LTD
Humidity-interference-resistant super-hydrophobic fabric-based pressure sensor and preparation method thereof
ActiveCN112726205AImprove sensing stabilityGuaranteed to be free from interferenceLiquid repellent fibresVegetal fibresConductive materialsStress sensors
The invention provides a humidity-interference-resistant super-hydrophobic fabric-based pressure sensor and a preparation method thereof. The preparation method comprises the following steps: dipping fabric in an alkaline solution to increase active groups on the surface of the fabric; then dipping the fabric in a conductive material solution to obtain conductive fabric; and dipping the conductive fabric in the super-hydrophobic nano metal oxide particle dispersion liquid to form a super-hydrophobic nano metal oxide layer on the surface of the conductive fabric, and connecting an electrode to the surface of the conductive fabric to obtain the super-hydrophobic fabric-based pressure sensor. Through the super-hydrophobic nanoscale metal oxide layer, the conductive layer of the fabric-based pressure sensor can be fully protected from humidity interference on the basis of not reducing the conductivity and the sensing sensitivity of the sensor, so that the sensing stability of the fabric-based pressure sensor in different use environments is improved.
Owner:WUHAN TEXTILE UNIV
Transient voltage suppressor and manufacturing method therefor
PendingCN107527907AReduce processing difficultyImprove area utilizationSolid-state devicesSemiconductor/solid-state device manufacturingChip sizeElectrical connection
The invention discloses a transient voltage suppressor and a manufacturing method therefor. The transient voltage suppressor comprises a semiconductor substrate; a first epitaxial layer located on the first surface of the semiconductor substrate; a buried layer located in the epitaxial layer; a second epitaxial layer located on the first epitaxial layer; a first isolating region and a second isolating region which respectively extend from the surface of the second epitaxial layer to the interior of the buried layer and the interior of the second epitaxial layer, wherein the first and second isolating regions are respectively used for forming a first active region and a second active region in the second epitaxial layer; a first doping region and a second doping region, which are respectively located in the first active region and the second active region and extend to the interior of the second epitaxial layer from the surface of the epitaxial layer, wherein the first and second doping regions are in electrical connection. The doping type of the substrate is the same as the doping type of the epitaxial layer. The transient voltage suppressor enables a power device which occupies a large area to be made in a core, improves the utilization rate of the area of the chip and the integration degree, further reduces the size of the chip, and reduces the packaging cost.
Owner:BEIJING YANDONG MICROELECTRONICS
Transient voltage suppressor and manufacturing method thereof
ActiveCN108198812AImprove performanceReduce manufacturing difficultySolid-state devicesDiodeCapacitanceElectricity
The invention discloses a transient voltage suppressor and a manufacturing method thereof. The transient voltage suppressor includes: a semiconductor substrate; an epitaxial layer arranged on a firstsurface of the semiconductor substrate; a first buried layer extending from the first surface of the semiconductor substrate to the interior of the semiconductor substrate, wherein the first buried layer and the semiconductor substrate from a PN junction; a second buried layer, wherein a part of the second buried layer and a part of the first buried layer from a first transient voltage suppressingtube; a plurality of isolation areas extending from a surface of the epitaxial layer to the interior of the first buried layer or the second buried layer; a plurality of well regions extending from the surface of the epitaxial layer to the interior of the epitaxial layer, wherein at least one of the plurality of well regions contacts the corresponding isolation area so as to form a second transient voltage suppressing tube, and at least part of the first buried layer and the semiconductor substrate are electrically connected so as to allow short out of the PN junction. The transient voltage suppressor has a bidirectional transient voltage suppressing function, is low in capacitance, is small in size, is easy to manufacture, and can lead electrodes from a front surface and a back surface.
Owner:BEIJING YANDONG MICROELECTRONICS
Method for preparing dodecyl methyl sulfoxide
InactiveCN105294516ALow toxicityLow priceOrganic chemistryOrganic compound preparationChemical synthesisFiltration
The invention relates to a method for preparing dodecyl methyl sulfoxide. The method comprises two parts namely chemical synthesis as well as separation and purification of dodecyl methyl sulfoxide: performing single methylation on n-dodecanethiol through a methylation reagent, and performing selective oxidation on the intermediate product n-dodecyl methyl sulfide through an oxidizing agent to obtain dodecyl methyl sulfoxide; performing methylation reaction on n-dodecanethiol, performing preliminary purification on n-dodecanethiol, performing suction filtration to remove solid potassium carbonate, extracting the filtrate through ethyl acetate, adjusting the pH to be neutral, adding saturate saline solution to wash an organic phase, adopting anhydrous sodium sulfate or anhydrous magnesium sulfate for water absorption and drying, performing suction filtration to remove solid, and performing distillation to remove ethyl acetate so as to obtain a n-dodecyl methyl sulfide crude product. According to the invention, the methylation reagent which is environment-friendly, low in price and toxicity is selected to replace iodomethane, the oxidizing agent which is environment-friendly and excellent in oxidation selectivity for n-dodecyl methyl sulfide is selected to replace sodium periodate, and the technological conditions are controlled and researched, so that the method for preparing dodecyl methyl sulfoxide is environment-friendly.
Owner:阮建兵
A kind of method for preparing metal organic framework material thin film
ActiveCN104710559BEvenly dispersedInhibition of agglomerationGroup 4/14 element organic compoundsMetal-organic frameworkPhotoinitiator
Owner:理工清科(北京)科技有限公司
Transient voltage suppressor and manufacturing method therefor
PendingCN107706229AReduce processing difficultyImprove area utilizationSemiconductor/solid-state device detailsSemiconductor devicesTransient voltage suppressorSemiconductor
The invention discloses a transient voltage suppressor and a manufacturing method therefor. The transient voltage suppressor comprises a first doping type semiconductor substrate, a first doping typefirst epitaxial layer positioned on the surface of the semiconductor substrate, a second doping type buried layer positioned in the epitaxial layer, a first doping type second epitaxial layer positioned on the first epitaxial layer, a second doping type first isolation region and a first doping type second isolation region which extend from the surface of the second epitaxial layer to the buried layer and the second epitaxial layer respectively, and first doping type first doping regions and second doping type second doping regions which are positioned in respective first isolation islands andsecond isolation islands and extend from the surface of the epitaxial surface to the second epitaxial layer respectively, wherein the first isolation region and the second isolation region are used for forming multiple first isolation islands and second isolation islands in the second epitaxial layer respectively; and each first doping region and the corresponding second doping region are electrically connected to form multiple signal channels.
Owner:BEIJING YANDONG MICROELECTRONICS
Chiral spiro monophosphine-oxazoline ligands and preparation method thereof
PendingCN112209967AHigh yieldHigh purityGroup 5/15 element organic compoundsOrganic-compounds/hydrides/coordination-complexes catalystsCarboxyl radicalTriflic acid
The invention provides chiral spiro monophosphine-oxazoline ligands as well as intermediates and a preparation method thereof. The ligands are structural compounds shown in the following formulas 1, 2and 3 and comprise racemates and optical isomers of the compounds, and m and n are integers of 0-3; X is CR<1'>R<2'>, NR<1'>, O or S; R1 and R2 are respectively and independently hydrogen, alkyl, phenyl, 1naphthyl, 2naphthyl, alkoxy and ester substituted alkyl; R is hydrogen, alkyl, substituted phenyl, substituted alkyl, alkoxy, phenyl, 1-naphthyl, 2-naphthyl, halogen, cyano, carboxyl and hydroxyl; R2 is hydrogen, alkyl, phenyl, 1-naphthyl, 2-naphthyl or alkyl substituted phenyl; M' is P(O)(R3)2 or P(R3)2; R3 is alkyl, phenyl, 1-naphthyl, 2-naphthyl, substituted phenyl, furyl or thienyl; M isOTf, COOH or COOR5; OTf is trifluoromethanesulfonic acid group; and R5 is alkyl.
Owner:ZHEJIANG JIUZHOU PHARM CO LTD
Metal ion coordination capture adsorption enhanced mask main body material, preparation method thereof and mask
PendingCN114277575AImprove filtering effectPromote cross-linking reactionFibre treatmentProtective garmentPolypropyleneWoven fabric
The invention discloses a preparation method of a metal ion coordination capture adsorption enhanced mask main body material. The preparation method comprises the following steps: stirring and mixing glycerol, sodium polyacrylate and dihydroxyaluminum aminoacetate to obtain a component A; stirring and mixing distilled water, tartaric acid and disodium ethylene diamine tetraacetate to obtain a component B; fully mixing the component A and the component B to obtain hydrogel; and finally, modifying a non-woven fabric by using the hydrogel, and drying to obtain the metal ion coordination capture adsorption enhanced mask main body material. Through the mode, coordination bonds of aluminum ions and carboxyl in the hydrogel can form a capture and adsorption effect, so that the blocking and protecting capability of a common mask material on pollutants is further improved; moreover, along with the prolonging of the service time of the mask, the water is continuously accumulated, so that the hydrogel is further promoted to release more aluminum ions and carboxyl groups, the attenuation degree of the filtering efficiency of the mask is obviously slowed down, and relatively high filtering efficiency is still kept, thereby prolonging the service life of a common disposable mask.
Owner:WUHAN TEXTILE UNIV
Polypeptide for promoting pig body to generate African swine fever virus antigen specific immune response, and application of polypeptide
ActiveCN111944022APromote productionEnhance immune responseViral antigen ingredientsVirus peptidesClassical swine fever virus CSFVAfrican swine fever virus Antigen
The invention provides a polypeptide for promoting a pig body to generate the African swine fever virus antigen specific immune response, and an application of the polypeptide, and belongs to the technical field of biological medicines. The polypeptide comprises one or more of a first polypeptide, a second polypeptide, a third polypeptide, a fourth polypeptide and a fifth polypeptide, wherein amino acid sequences of the first polypeptide, the second polypeptide, the third polypeptide, the fourth polypeptide and the fifth polypeptide are shown as SEQ ID NO.1-SEQ ID NO.5 respectively. The polypeptide provided by the invention can significantly promote the proliferation of ASFV sensitized immune cells, and can promote the pig body to generate the ASFV antigen specific immune response by promoting pig CD8<+>T cells to secrete IFN-gamma. After animals are immunized, the immune response of the pig body can be remarkably promoted. The polypeptide or a polypeptide polymer obtained by polypeptide polymerization can be used for preparing subunit vaccines of African swine fever virus.
Owner:LANZHOU INST OF VETERINARY SCI CHINESE ACAD OF AGRI SCI
Swine fever branch peptide and application thereof
InactiveCN103159858BImproving immunogenicityQuality improvementAntiviralsBiological testingSide effectViral antibody
Owner:SHANGHAI VETERINARY RES INST CHINESE ACAD OF AGRI SCI
A class of polypeptides that promote pigs to produce African swine fever virus antigen-specific immune responses and applications thereof
ActiveCN111944022BPromote productionEnhance immune responseViral antigen ingredientsVirus peptidesClassical swine fever virus CSFVAfrican swine fever virus Antigen
The present invention provides a class of polypeptides for promoting African swine fever virus antigen-specific immune responses in pigs and their application, belonging to the technical field of biomedicine; the polypeptides include a first polypeptide, a second polypeptide, a third polypeptide, One or more of the fourth polypeptide and the fifth polypeptide; the amino acid sequences of the first polypeptide, the second polypeptide, the third polypeptide, the fourth polypeptide and the fifth polypeptide are respectively shown in SEQ ID Shown in NO.1~SEQ ID NO.5. The polypeptide of the present invention can significantly promote the proliferation of ASFV-sensitized immune cells, and can promote porcine CD8 + T cells secrete IFN-γ to promote ASFV antigen-specific immune response in pigs. After immunizing animals, it can significantly promote the immune response of pigs. The polypeptide of the present invention or the polypeptide polymer obtained by polymerizing the polypeptide can be used to prepare a subunit vaccine of African swine fever virus.
Owner:LANZHOU INST OF VETERINARY SCI CHINESE ACAD OF AGRI SCI
Fluorescent material and preparation method for specific detection of five-membered heterocyclic compounds
ActiveCN104327842BQuick responseHigh fluorescence intensityNickel organic compoundsCobalt organic compoundsHigh energyVolumetric Mass Density
Owner:BEIJING INSTITUTE OF TECHNOLOGYGY
Polypeptide for promoting swine body to generate African swine fever virus antigen specific immune response and application thereof
ActiveCN113896772AEnhance immune responsePromote proliferationViral antigen ingredientsVirus peptidesClassical swine fever virus CSFVAfrican swine fever virus Antigen
Owner:LANZHOU INST OF VETERINARY SCI CHINESE ACAD OF AGRI SCI
Polypeptides for promoting swine body to generate African swine fever virus (ASFV) antigen-specific immune response and application of polypeptides
ActiveCN112209996APromote productionPromotes the generation of African swine fever virus antigen-specific immune responsesViral antigen ingredientsVirus peptidesClassical swine fever virus CSFVAfrican swine fever virus Antigen
The invention provides polypeptides for promoting a swine body to generate an African swine fever virus (ASFV) antigen-specific immune response and application of the polypeptides, and belongs to thetechnical field of biological medicines. The polypeptides comprises one or more of a first polypeptide, a second polypeptide, a third polypeptide, a fourth polypeptide and a fifth polypeptide; the amino acid sequence of the first polypeptide, the amino acid sequence of the second polypeptide, the amino acid sequence of the third polypeptide, the amino acid sequence of the fourth polypeptide and the amino acid sequence of the fifth polypeptide are as shown by SEQ ID NO.1-SEQ ID NO.5 respectively. The polypeptides provided by the invention can obviously promote the proliferation of ASFV sensitized immune cells, and can promote the swine body to generate the ASFV antigen-specific immune response by promoting swine mononuclear macrophages and B and T lymphocytes to secrete interferon-gamma (IFN-gamma). After an animal is immunized, the immune response of the swine pig body can be remarkably promoted. The polypeptides or a polypeptide polymer obtained by polymerization of the polypeptides can be used for preparing subunit vaccines of the African swine fever virus.
Owner:LANZHOU INST OF VETERINARY SCI CHINESE ACAD OF AGRI SCI
System and method for regenerating magnesium oxides and sulfur dioxides through decomposition of magnesium oxide desulphurization by-products
ActiveCN103111187BImprove productivityReduce volumeDispersed particle separationEnergy inputAir preheaterHigh concentration
Owner:SUNIC ENERGY & ENVIRONMENT TECH CHONGQING
Perovskite solar cell based on crystalline hydrophobic micromolecule and hydrophobic polymer composite hole transport material and preparation method thereof
PendingCN114068822ASimple processLow costSolid-state devicesSemiconductor/solid-state device manufacturingPerovskite solar cellHydrophobic polymer
The invention discloses a perovskite solar cell based on a crystalline hydrophobic micromolecule and hydrophobic polymer composite hole transport material and a preparation method of the perovskite solar cell. According to the preparation method, the crystalline hydrophobic small molecule material is simply blended and doped, and then heat treatment is performed, so that the conductivity of the original hydrophobic polymer-based hole transport layer is improved while the hydrophobic performance is not sacrificed, and the prepared perovskite solar cell has excellent photoelectric conversion efficiency and excellent stability. In addition, due to the fact that charge transmission of the selected electron transmission material and the hole transmission material is balanced, the battery almost has no hysteresis effect. The process flow is simple, the raw material cost is low, the action effect is outstanding, and the application prospect is wide.
Owner:WUHAN TEXTILE UNIV
A class of polypeptides that promote pigs to produce African swine fever virus antigen-specific immune responses and applications thereof
ActiveCN112209996BEnhance immune responsePromote proliferationViral antigen ingredientsVirus peptidesClassical swine fever virus CSFVAfrican swine fever
The present invention provides a class of polypeptides for promoting African swine fever virus antigen-specific immune response in pigs and their applications, which belong to the technical field of biomedicine; the polypeptides include a first polypeptide, a second polypeptide, a third polypeptide, One or more of the fourth polypeptide and the fifth polypeptide; the amino acid sequences of the first polypeptide, the second polypeptide, the third polypeptide, the fourth polypeptide and the fifth polypeptide are respectively shown in SEQ ID Shown in NO.1~SEQ ID NO.5. The polypeptide of the present invention can significantly promote the proliferation of ASFV-sensitized immune cells, and can promote the production of ASFV antigen-specific immune response by pigs by promoting the secretion of IFN-γ by pig mononuclear macrophages and B and T lymphocytes. After immunizing animals, it can significantly promote the immune response of pigs. The polypeptide of the present invention or the polypeptide polymer obtained by polymerizing the polypeptide can be used to prepare a subunit vaccine of African swine fever virus.
Owner:LANZHOU INST OF VETERINARY SCI CHINESE ACAD OF AGRI SCI
Low floating fiber polyformaldehyde composition and preparation method thereof
The invention belongs to the technical field of engineering plastics, and particularly relates to a low-floating-fiber polyformaldehyde composition and a preparation method thereof. The low floating fiber polyformaldehyde composition is prepared from the following raw materials in percentage by weight: 39.8 to 83.7 weight percent of polyformaldehyde, 1 to 15 weight percent of maleic anhydride grafted ultrahigh molecular weight polypropylene, 15 to 40 weight percent of glass fiber, 0.1 to 1 weight percent of antioxidant, 0.1 to 1.2 weight percent of compatilizer and 0.1 to 3 weight percent of plasticizer. The low-floating-fiber polyformaldehyde composition is good in surface, low in floating fiber, excellent in mechanical property and good in wear resistance, the adopted process is simple and effective, the production cost is low, and the low-floating-fiber polyformaldehyde composition has industrial advantages and practical value.
Owner:TAISHAN FIBERGLASS INC
Transient voltage suppressor and manufacturing method thereof
ActiveCN108198813AReduce manufacturing difficultyParameter stabilitySolid-state devicesDiodeCapacitanceEngineering
The invention discloses a transient voltage suppressor and a manufacturing method thereof. The transient voltage suppressor includes: a semiconductor substrate and a second epitaxial layer arranged ona first surface of the semiconductor substrate; a first buried layer extending to the semiconductor substrate; a second buried layer, wherein a first part of the second buried layer extends to the semiconductor substrate, and the second part of the second buried layer extends to the first buried layer; a first isolation region extending to the second epitaxial layer so as to limit a first isolation island and a second isolation island; a second isolation region extending to the second epitaxial layer, wherein a first part of the second isolation region limits a third isolation island in the first isolation island, and a second part of the second isolation region is connected to the first part of the second buried layer; a first well region, wherein a part of the first well region extendsto the third isolation island, and the other part of the first well region is connected to the first buried layer through the first isolation region; and a second well region extending to the second isolation island, and electrically connected to the first part of the first well region. The transient voltage suppressor has a bidirectional transient voltage suppressing function, is low in capacitance, is small in size, is easy to manufacture, and can lead electrodes from a front surface and a back surface.
Owner:BEIJING YANDONG MICROELECTRONICS
Preparation method of phenolic aldehyde-based activated carbon fiber felt
InactiveCN114197112ASimple spinning processSimple equipmentHeating/cooling textile fabricsFibre chemical featuresActivated carbonPolymer science
The invention provides a preparation method of an activated carbon fiber felt, and particularly relates to a preparation method of a phenolic aldehyde-based activated carbon fiber felt. The preparation method comprises the following steps: carrying out melt spinning on thermoplastic phenolic resin to prepare thermoplastic phenolic fibers, further preparing a thermoplastic phenolic fiber felt, then carrying out pre-oxidation, carrying out low-temperature carbonization and high-temperature carbonization, and finally, carrying out activation. The phenolic aldehyde-based activated carbon fiber felt adopts thermoplastic phenolic resin as a raw material, is wide in source and low in price, and the manufacturing cost increase caused by the two-step carbonization process is far lower than that of a thermosetting phenolic fiber manufacturing scheme, so that the phenolic aldehyde-based activated carbon fiber felt has more industrialization advantages.
Owner:QINGDAO HSJ ENVIRONMENTAL PROTECTION TECH CO LTD +1
Chiral spiro monophosphine ligand and preparation method thereof
PendingCN111909206AHigh yieldHigh purityGroup 5/15 element organic compoundsCarboxyl radicalPhenyl group
The invention provides a chiral spiro monophosphine ligand, and an intermediate and a preparation method thereof. The compounds are structural compounds shown in the following formulas 1, 2 and 3 andcomprise racemates and optical isomers of the compounds, wherein m and n are integers of 0-3; X is CR1R2, NR1, O or S; R1 and R2 are respectively and independently hydrogen, C1-C8 alkyl, phenyl, 1-naphthyl, 2-naphthyl, C1-C8 alkoxy and ester group substituted alkyl; R is hydrogen, C1-C8 alkyl, substituted phenyl, substituted alkyl, C1-C8 alkoxy, phenyl, 1-naphthyl, 2-naphthyl, fluoro, chloro, bromo, iodo, cyano, carboxyl and hydroxyl; Y is O or CH2; Z is NR3R4, OR5 and R6; R3, R4, R5 and R6 are each independently substituted phenyl, a substituted alkyl, C1-C8 alkyl, a phenyl, 1-naphthyl and 2-naphthyl; and M is cyano, carboxyl or substituted alkyl.
Owner:ZHEJIANG JIUZHOU PHARM CO LTD
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