51results about How to "High dissociation efficiency" patented technology

There is provided a compound represented by a specific formula, which has an absorption maximum at 400 nm or more and less than 720 nm in a UV-visible absorption spectrum, wherein a molar extinction coefficient is 10,000 mol−1·l·cm−1 or more at the absorption maximum wavelength, and a difference between a melting point and a deposition temperature (a melting point−a deposition temperature) is 31° C. or more.

Among various ions introduced into an ion trap 1, those ions which are within a predetermined mass range including the mass-to-charge ratio of an objective ion are selected. Then, the frequency of a capturing voltage is set so that the objective ion will be captured with a high q-value, and a CID gas is introduced into the ion trap 1. An excitation voltage corresponding to the mass-to-charge ratio of the objective ion is applied to end-cap electrodes 3 and 4 to cause an oscillation of the objective ion and help dissociation of the ion by CID. The high q-value leads to a high dissociation efficiency. The application of the excitation voltage is discontinued before the low-mass ions produced by CID totally dissipate. Simultaneously with this operation, or slightly delayed therefrom, the frequency of the capturing voltage is switched so that the q-value will be lowered. Although the high q-value allows the low-mass product ions to easily dissipate during the CID process, they can be captured within an ion-trapping space 5 since the q-value is lowered when those ions still remain there. Thus, measurement of low-mass product ions can be simultaneously achieved with improvement of dissociation efficiency.

The invention discloses a glutathione-modified chitosan copolymer serving as a non-viral gene carrier material and preparation and application thereof, which belong to the fields of gene therapy and novel materials. A preparation method of the copolymer comprises the following steps of: (1) synthesizing an allyl-modified chitosan derivative; (2) synthesizing brush-like PEG (Polyethylene Glycol) polymer chains with different molecular weights through RAFT (Reversible Addition-Fragmentation Chain Transfer); (3) grafting the brush-like PEG onto a chitosan framework by adopting a free radical coupling method; and (4) linking glutathione to the chain end of the brush-like PEG by adopting an EDC (1-Ethyl-3-(3-Dimethyllaminopropyl) Carbodiimide hydrochloride) / NHS (N-hydroxysuccinimide) activation method to obtain a glutathione-modified chitosan copolymer carrier material. The glutathione-modified chitosan copolymer obtained by adopting the technology serves as the non-viral gene carrier material. By adopting the copolymer, the endocytosis function of a composite nanoparticle formed from the copolymer and DNA (Deoxyribonucleic Acid) can be remarkably enhanced, the releasing mechanism of DNA from a composite particle after cell entrance is improved, and the non-viral gene carrier material with a high transfection efficiency is further obtained.

A photoelectric conversion device having: a pair of electrodes; a photoelectric conversion layer sandwiched between the pair of electrodes; and at least one electron blocking layer provided between one electrode of the pair of electrodes and the photoelectric conversion layer, wherein the photoelectric conversion layer contains at least one organic material, and the at least one electron blocking layer has a mixed layer containing fullerene or fullerene derivatives.

Embodiments of the present invention relate to method and apparatus for providing processing gases to a process chamber with improved plasma dissociation efficiency. One embodiment of the present invention provides a baffle nozzle assembly comprising an outer body defining an extension volume connected to a processing chamber. A processing gas is flown to the processing chamber through the extension volume which is exposed to power source for plasma generation.

The invention relates to a short process purification method of graphite. The method includes crushing, grinding and flotation steps, and is characterized in that the method includes the following steps: (1) preparing graphite or a carbonaceous material having a particle size of less than 1 mm and a fixed carbon content of not less than 35% into pulp having a concentration of not higher than 60%,placing a direct contact type ultrasonic oscillator into the pulp, and controlling the power to be not less than 1.0 kW and time to be not less than 1 min; (2) diluting the crushed and dispersed pulpto pulp having a concentration of not higher than 30% and sending the diluted pulp into flotation equipment, adding an inhibitor, a collector and a foaming agent for coarse selection and fine selection in order, and carrying out stirring, inflation and flotation to obtain graphite concentrate and graphite tailings; and (3) condensing the graphite concentrate and graphite tailings until the concentration is 30%-60% or sending the graphite concentrate and graphite tailings into a direct contact type ultrasonic oscillator container for crushing and dispersing, and repeating the step (1) and (2) for 2-3 times. The beneficial effects of the short process purification method of graphite are that the method improves the dissociation efficiency, reduces the number of grinding and flotation, helpsto reduce the amount of a flotation reagent and improve the efficiency of the flotation reagent, optimizes the flotation effect, and improves the carbon content of the concentrate.

The invention discloses a novel cationic polymer used as a non-viral gene carrier as well as a preparation method and application thereof. The cationic polymer provided by the invention has a structure shown as the following formula I. The cationic polymer has a 1,2,3-triazole group structure and a disulfide bond structure and is generated by an alkynylation monomer and an azide monomer (an azide-diethylene glycol monomer and an azide monomer containing a disulfide bond) through cycloaddition and polymerization of alkynyl-azide catalyzed by single-charge copper ions. The polymer provided by the invention has a structure in which triazole is adjacent to amide, and the structure has specific binding ability with nucleic acid, thus, the stability of genes in the transmission process can be improved; and the disulfide bond contained in the structure also has reduction responsiveness and can be degraded in a cell to further increase the transfection efficiency and lower the toxicity, therefore, the non-viral gene carrier prepared by using the polymer has the characteristics of high biocompatibility, low toxicity, high transfection efficiency and the like.

A cleaning method for CVD apparatus wherein by-products such as SiO2 and Si3N4 adhered to and deposited on surfaces of the inner wall, electrodes and other parts of a reaction chamber at the stage of film formation can be removed efficiently. Furthermore, the amount of cleaning gas discharged is so small that the influence on environment such as global warming is little and cost reduction can be also attained. After the film formation on a base material surface by the use of CVD apparatus, a fluorinated cleaning gas containing a fluorcompound is converted to plasma by means of a remote plasma generator, and the cleaning gas having been converted to plasma is introduced into a reaction chamber so that any by-products adhered to inner parts of the reaction chamber is removed.

The invention relates to an automatic detaching machine for an abandoned electronic circuit board element and belongs to the technical field of metallurgy and chemical industry. The automatic detaching machine comprises a horizontal shell, wherein a feeding port is formed at the front end of the shell; a rotary furnace and a rotary screen are respectively arranged in the shell along the horizontal direction according to a sequence; a discharging port is arranged at the rear end of the rotary furnace; a transmission mechanism is respectively connected with the exteriors of the rotary furnace and the rotary screen; the rotary screen comprises a first screen, a second screen and a third screen, the meshes of which are increasingly big; a tin solder blanking port is arranged under the first screen; an element blanking port is arranged under the second screen; a plate blanking port is arranged on the third screen; a substrate blanking port is arranged under the third screen; a nozzle passes through the rear end of the shell; a connecting fan is fixed in the shell; an air pipe is connected with the fan; and a thermodetector is arranged on the upper part of a superposed area of the rotary furnace and the rotary screen on the shell. The automatic detaching machine provided by the invention is simple in operation, strong in adaptability to circuit boards in different sizes, low in production cost and higher in processing capacity.

The present disclosure provides a system and method to dissociate water molecules into H2 and O2 and includes a reaction vessel having at least one radiolysis apparatus, at least one photolysis apparatus, at least one catalyst apparatus, and at least one electromagnetic fielding apparatus. The reaction vessel has a body, a first end and a second end defining an interior reaction chamber, an inlet for receiving water vapor and at least two outlets. A plurality of windings of a contiguous electrical conductor are wound in a first direction adjacent the first outlet and plurality of windings of a contiguous electrical conductor wound in a second direction adjacent the second outlet such that the first direction is opposite the second direction. When a current is applied to the conductor, an electromagnetic field is generated to migrate the disassociated H2 and O2 molecules toward the respective first outlet or second outlet.

The invention discloses a preparation method of a BN quantum dot combined photocatalytic composite fiber. The preparation method is specifically implemented according to the following steps: step 1, preparing a photocatalytic fiber through electrospinning; step 2, hydroxylating the surface of the fiber; step 3, performing hydrothermal synthesis to obtain BN quantum dots; and step 4, carrying out strengthening post-treatment to obtain the BN quantum dot combined photocatalytic composite fiber. According to the method disclosed by the invention, the BN quantum dot / photocatalyst composite interface with a large number of exposed active sites can be obtained; and the BN quantum dots are firmly combined on the surface of the fiber, so that organic dye can be fully adsorbed, the reaction probability of a catalyst and an adsorbate is improved, the exciton dissociation efficiency can be improved, the carrier mobility is improved, photo-excitation charge carrier recombination is inhibited, andthe photocatalytic reaction efficiency is improved.

An object of the invention is to obtain a biotinylated nucleic acid efficiently, by enhancing dissociation efficiency of biotin in the biotinylated nucleic acid and tamavidin 2 in a tamavidin 2-immobilized insoluble carrier. The inventive method for separating a biotinylated nucleic acid includes (1) contacting a sample containing a biotinylated nucleic acid wherein the biotin is bound to the nucleic acid with a insoluble carrier on which tamavidin is immobilized (a tamavidin-immobilized insoluble carrier) to form a complex of the biotinylated nucleic acid and the tamavidin-immobilized insoluble carrier, and (2) separating the biotinylated nucleic acid from the complex in a solution having pH of 7.8 to 9.5 and in the presence of free biotin. The invention also provides a method for separating the biotinylated nucleic acid to which the nucleic acid-binding protein is bound, a method for separating the nucleic acid-binding protein, and a kit for separating the nucleic acid.

The invention discloses a rotator of hydraulic pulp kneader, including several groups of spiral leaf with different distance on the central axial and the thrust to brei are different, so that vorticity circulation and local vorticity circulation are formed, the times of collision is increased and the waste paper is scattered to be the single fiber. The invention has simple structure, convenient procession, high work effiency and energy saving.

The invention belongs to the field of organic photovoltaic cells, and particularly relates to an organic small-molecule photovoltaic device based on a three-terminal electrode structure. The organic small-molecule photovoltaic device comprises an ITO layer serving as a first electrode layer, an organic small-molecule donor connected with a conductive face of the ITO layer, an organic small-molecule receptor connected with the other face of the organic small-molecule donor, a second electrode layer connected with the other face of the organic small-molecule receptor, a dielectric layer connected with the other face of the second electrode layer, and a third electrode layer connected with the other face of the dielectric layer, the first electrode layer is connected with a negative electrode of a direct-current voltage source, the third electrode layer is connected to a positive electrode of the direct-current voltage source, and the first electrode layer and the second electrode layer serve as output ends. According to the device, due to the fact that a potential is applied to the two ends of the organic small-molecule photovoltaic device, a strong electric field can be formed in the organic small-molecule photovoltaic device, the exciton disassociation efficiency is improved, and the energy conversion benefit of the organic small-molecule photovoltaic device is improved.

According to the dissociation liquid for dissociating the drug / ADA compound and the application of the dissociation liquid, the dissociation liquid can simply, conveniently, rapidly and reliably dissociate the drug / ADA compound formed by combining the drug and an anti-drug antibody (ADA) of the drug, and false negative of anti-drug antibody detection can be reduced. The dissociation liquid provided by the invention contains an anionic surfactant and / or a nonionic surfactant.

The invention discloses an integrated continuous production type clay dissociation-modification-drying method. The method comprises the following steps: fully mixing and soaking clay in a dispersion solvent; uniformly adding the pretreated clay and a modifier in a meshed co-rotating twin screw extruder, adjusting the extrusion parameter, and utilizing strong shearing force of the meshed co-rotating twin screw extruder at a meshed position to loosen and tear clay aggregate; and further drying the extruded clay to obtain micro-nano clay powder in the soft gathering state, and recycling the solvent at the same time. According to the invention, the strong shearing force of the meshed co-rotating twin screw extruder at the meshed position is utilized to loosen and tear the clay aggregate, so that the requirements for equipment are low, the process is easy to control, environmental friendliness is realized, the energy consumption and the cost are low, and large-scale continuous environmental-friendly production can be realized.

The invention discloses a method for designing and manufacturing a mixed plane-bulk heterojunction photosensitive organic field effect transistor which comprises a substrate, a grid electrode, a grid medium, an organic carrier transporting layer, an organic bulk heterojunction photosensitive layer, a drain electrode and a source electrode. The organic bulk heterojunction realizes a function of generating photon-generated carriers, and is required to have high photosensitivity or photo-generated carrier generating efficiency rather than high migration rate. The organic carrier transporting layer realizes a function of transporting the photo-generated carriers, and is required to have high migration rate rather than high photosensitivity. By the structure, selection range of organic materials is expanded greatly, generating efficiency of the photo-generated carriers is improved, and organic carrier migration rate is increased, so that performance of the photosensitive organic field effect transistor can be improved effectively.

The invention discloses preparation of phyllostachys pubescens protoplast and establishment of a transient conversion system. According to the invention, 4.5-6% (wt / vol) cellulase R10 and 1-1.6% (wt / vol) segregating enzyme R10 are used for dissociating phyllostachys pubescens leaf sheaths to obtain protoplasts; after the obtained protoplast is separated, purified and pretreated, the exogenous geneis efficiently transferred into the phyllostachys pubescens protoplast by utilizing PEG-Ca <2+> for transient expression.

The invention discloses a polymer solar cell, which comprises a substrate, an anode layer, an anode buffer layer, an active layer and a cathode layer sequentially stacked from bottom to top, wherein the active layer comprises (1) PTB7 or PM7, (2) PC71BM or ITIC, and (3) an additive; the additive comprises a first additive and a second additive, the first additive is 1, 8-diiodooctane, 1, 8-dibromooctane, chloronaphthalene, 1, 8-octanedithiol or diphenyl ether, and the second additive is polyethylene glycol. DIO and PEG double additives are doped in a PTB7:PC71BM mixed solution; the dissociation efficiency of photo-induced excitons of the polymer solar cell, the transport efficiency of charge carriers and the collection efficiency of carriers by an electrode are improved by utilizing the morphology of the active layer improved by the double additives and the conductivity of the anode buffer layer, and the energy conversion efficiency of the polymer solar cell is remarkably improved.

The invention discloses a desulfurization method utilizing white clay, which is characterized in that white clay is used as a desulfurizing agent to carry out double-tower desulfurization in two ways: both a pretreatment tower and an absorption tower adopt the white clay, or the pretreatment tower adopts the white clay to remove 20-30% of SO2, and the absorption tower continuously uses limestone to remove residual SO2; a plurality of monitoring indexes are applied to control in the white clay desulfurization process, and the monitoring content comprises the density of white clay slurry and the particle size of solid particles contained in the white clay slurry, the total dissolved solid mass concentration and density of the gypsum slurry. An existing double-tower main body structure is fully utilized, the desulfurization efficiency and the gypsum quality are guaranteed, meanwhile, zero emission of desulfurization waste water is achieved, and the operation cost is reduced.

The invention discloses a broad-band gap polymer donor material based on a benzodithiazole electron-deficient unit and a preparation method and application thereof, and belongs to the technical field of organic optoelectronics. Benzo [1, 2-d: 4, 5-d'] dithiazole perpendicular to a polymer main chain is used as an acceptor unit and is copolymerized with a series of donor units, and a batch of high-performance wide-band gap polymer donor materials are obtained; according to the present invention, with the application of the polymer organic solar cell, the open-circuit voltage of 0.85 V, the short-circuit current density of 25.86 mA cm<-2>, the fill factor of 67.4% and the photoelectric conversion efficiency of 14.86% can be obtained without deep optimization. The broad-band gap polymer donor material has the characteristics of good crystallinity and high absorption and migration rate, and has practical application value in organic solar cells.

The invention relates to the technical field of analysis, in particular to a preparation method of a nano bismuth / graphene composite material and the application of the nano bismuth / graphene composite material in MALDI-MS. The preparation method comprises the following steps of S01, preparing GO, and preparing a GO aqueous solution with the concentration being 0.5 mg / mL to 1.5 mg / mL; S02, adding bismuth salt in the step S01, stirring for 20-40 minutes, and adjusting the pH of the solution to be 9-10; S03, putting the solution treated in the step S02 into a reaction kettle to react for 8-12 hours; and S04, cleaning the solid obtained by the reaction in the step S03 with ethanol and water for multiple times, and then carrying out vacuum drying to obtain the bismuth / graphene composite material. According to an MALDI-MS negative ion mode analysis method established based on the bismuth-based nano material, the electron distribution in the system can be influenced by constructing the composite material, so that light absorption of the composite material is increased, separation of electron-hole pairs is accelerated, and the dissociation efficiency of an object to be detected is improved.

The invention discloses a reagent kit and method for dissociating an animal embryo. The reagent kit for dissociating an animal embryo disclosed by the invention comprises reagents of which the names are respectively an enzymolysis solution C, an enzymolysis solution D and an enzymolysis solution E, wherein the enzymolysis solution C consists of cytochalasin storing fluid and TrypLE digestive fluid, and the volume ratio of the cytochalasin storing fluid to the TrypLE digestive fluid is (3 to 47) to (3 to:97); the enzymolysis solution D is fluid consisting of fetal calf serums, a pronase solution and a TCM-HEPES buffer solution, and the volume ratio of the fetal calf serums to the pronase solution to the TCM-HEPES buffer solution is (1 to 1 to 1) to (1 to 2 to 1); and the enzymolysis solution E consists of cytochalasin storing fluid and Accutase cell separation fluid, and the volume ratio of the cytochalasin storing fluid to the Accutase cell separation fluid is (3 to 47) to (3 to 97). Experiment proves that when the reagent kit and method disclosed by the invention are used for dissociating the animal embryo, the dissociating efficiency is high, the embryo of an animal of species, which cannot be dissociated by an existing method, can be dissociated, the reagent kit and the method are suitable for the embryos at different developmental stages, and hurt to cells in the dissociating process can also be reduced.

The invention discloses an analysis and detection method for effectively screening phospholipid in krill oil. The method comprises the following steps: taking krill powder, uniformly grinding, addinginto a trichloromethane-methanol mixed solution, and uniformly oscillating at room temperature to obtain an extracting solution A; performing ultrasonic treatment on the extracting solution A, centrifuging the mixture, and collecting a lower-layer organic phase and centrifuged residues to obtain an organic phase B and residues C; re-extracting the residue C with trichloromethane for multiple times, and collecting a lower-layer organic phase to obtain an organic phase D; mixing the organic phase B with the organic phase D to obtain an e1 extracting solution, blow-drying the e1 extracting solution, fixing the volume with acetonitrile, and filtering with an organic filter membrane to obtain a to-be-detected solution E; and finally, detecting the to-be-detected solution E through a hydrophilicinteraction liquid chromatography-mass spectrometry method in a precursor ion scanning mode. The method can realize non-targeted screening of phospholipid in krill oil, and has the characteristics ofhigh detection efficiency, high detection accuracy and high resolution.

The invention discloses an industrial purification method of trimethylindium. The industrial purification method comprises the following steps: adding a trimethylindium.ether complex in a reactor protected by an inert atmosphere, and then adding cycloalkane CnH2n (n is equal to or greater than 6) and reacting, wherein the temperature of the reaction system is always kept at 30-100 DEG C, and during the dropwise adding process, the dissociated ether is cooled by virtue of a condenser and is directly received in a receiving tank to achieve the complete dissociation of ether from trimethylindium. The reagents adopted by the method disclosed by the invention are conventional reagents and are inexpensive and easily available, the reaction process is mild and has no security risk; and as ether is continuously separated from the reaction system, the dissociation efficiency of ether is improved. No waste is generated in the reaction, the cost is reduced and no environment pollution is caused.

The present application provides a cell mass digestion and dissociation promoting liquid and a cell counting method. The cell mass digestion and dissociation promoting liquid comprises the following raw materials in percentage by mass: 1%-5% of polyethylene glycol octylphenol ether; 0.1%-4% of alkyl glycoside; 0.1%-1% of non-surface active agent type sulphobetaine; 0.1%-1% of zwitterionic detergent; 1%-10% of pH regulator; and the balance water. The cell digestion and dissociation promoting liquid can realize digestion and dissociation of cell masses by destroying lipid bilayers of cells, dissolving cytoplasm and cell membranes and destroying weak intermolecular binding bonds, and has high dissociation efficiency on the cell masses, so that the cell counting method provided by the present application can realize rapid and low-cost determination of the number of cells cultured on a support material in a bioreactor.