149 results about "Physical Chemistry Concepts" patented technology

The invention discloses a full-temperature-range pressure swing adsorption gas separation, refinement and purification method.By means of the difference of the temperatures and pressures of different raw material gases and the difference of the adsorption separation coefficients and physical chemistry properties of all components in the raw material gases in the temperature range of 80-200 DEG C and the pressure range of 0.03-4.0 MPa, the adsorption or desorption regeneration operation of the pressure swing adsorption circulation process is adjusted by coupling all separation methods, the adsorption theory that the pressure or temperature swing adsorption separation process is only limited to the adsorption and desorption regeneration circulation operation through pressure or temperature changes is expanded, and therefore all raw material gases are separated, refined and purified by achieving the energy gradient utilization in the gas separation, refinement and purification process and achieving the circulation operation, where adsorption, desorption and regeneration are easily matched and balanced, in the moderate to low cold and moderate to high temperature pressure swing adsorption separation process, and it is changed that a traditional adsorption method is only limited to the auxiliary effect of refinement and purification, and adsorption becomes the basic separation unit operation just as important as refinement, absorption and extraction separation.

The present invention relates to inorganic chemistry, physical chemistry and catalytic chemistry technology. The present invention prepares composite pore zeolite molecular sieve with common silicon source, aluminum source and hybrid metal atom source, and through hydrothermal treatment and calcinations process. In the hydrothermal treatment, material powder is prepared with composite template of mixture comprising quaternary ammonium salt polymer and organic amine or organic quaternary ammonium salt, or template of quaternary ammonium salt polymer. The hydrothermal treatment is in 100-180 deg c and has setting time of 1-7 days. The prepared molecular sieve m is then calcined at 300-800 deg c for 0.5-24 hr to obtain opened channels. The prepared molecular sieve has composite pore structure and high catalytic activity, and may have various metal atoms introduced. The prepared molecular sieve may be used widely as adsorbent, catalyst and catalyst carrier.

The invention relates to ultrahigh-malleability tunnel supporting anchor pile steel of converter continuous cast billet and a production method, which belongs to the technical field of a mine anchor rod. The anchor rod steel comprises the following components by weight percent: 0.5 to 0.70 percent of carbon, 0.15 to 1.20 percent of silicon, 0.5 to 2.5 percent of manganese, less than or equal to 0.045 percent of phosphorus, less than or equal to 0.045 percent of sulfur, 0 to 1.00 percent of chrome, 0 to 1.00 percent of nickel, 0 to 1.00 percent of molybdenum, 0 to 0.30 percent of copper, 0.03 to 0.40 percent of vanadium, 0.01 to 0.2 percent of aluminum, 0 to 0.10 percent of titanium, 0 to 0.10 percent of boron, 0.001 to 0.0 percent of niobium, 0.004 to 0.020 percent of nitrogen, and iron for the surplus; the yield strength Rel is larger than or equal to 600 MPa, the percentage elongation delta 5 is larger than or equal to 20 percent, the impact strength is 20 DEG C, Akv is larger than or equal to 27 J, and the breaking load is larger than or equal to 300 KN. By adopting the production process flow of converter crude metallurgy, LF furnace fine metallurgy and full protection continuous casting, the steel grade has the advantages that the purity is high, the structure is dense, the grain is fine, the physical chemistry properties of the steel are stable, the over-all mechanical property is good, the production operation and process flow are simple, and the rolled metal finished product can be directly used without heat treatment to the rear part.

The present invention relates to special active carbon for caramel decolorization and the preparation method thereof. The solid nutshell or coal serves as raw material which is processed by a physical chemistry immersion activation method to create active carbon. The immersion liquid is a water solution mainly comprising phosphoric acid, sodium hydroxide, magnesia and zinc chloride, wherein the proportioning by weight of each component is phosphoric acid: sodium hydroxide: magnesia: zinc chloride = 1:0.8~2.0:0.5~1.0:1~1.5. The obtained active carbon has an iodine value of 800~1000 mg / g, a caramel decolorization ratio of 80~100%, and a mechanical strength of 95%. The material is subjected to carbonizing, immersing, drying and activating treatment to create the active carbon product. The active carbon of the present invention has excellent decolorization property for macromolecule pigment, higher mechanical strength as general physical carbon, and wide application range. The traditional powdery carbon is replaced by granular activated carbon, the decolorizing pot is replaced by decolorizing column, the active carbon is changed from the disposable usage to the repeated and regenerated usage, and the decolorizing system can be continuously operated for a long time.

The invention provides a photochemical catalysis and degradation method of chlorinated phenols in water by utilizing Fe<0> / TiO2, belonging to the field of water deep disposal and photocatalytic material technique. The method aims at avoiding the problems of low degradation efficiency by traditional physical chemistry method, chemistry method and biology method and slow degradation speed and incomplete degradation by using pure zero valence iron or TiO2 during the process of removing the chlorinated phenols in water. The method is characterized in that nanometer zero valence iron mixed with TiO2 is prepared by a chemical reduction method; and photocatalytic reaction degrades the chlorinated phenol effectively, avoids forming other hazardous and noxious intermediate product, and finally obtains the end products without chlorinated phenol or even no phenols. The method has the effects and benefits that a novel photocatalyst, the preparation method thereof and a method used for photochemical catalysis and degradation of chlorinated phenols contamination in water with high efficiency are provided; and the catalyst is cheap and has high efficiency. The invention can be widely used for the purification of photolytic composite and water and the removal of contamination such as chlorinated phenols.

The invention relates to a manufacturing technique of a dyeing bamboo filament plate, belonging to the technical field of bamboo board. The technique comprises: material preparation, bamboo wood is made into bamboo filament, the color is adjusted, and the bamboo filament is dyed and then processed by gum dipping to form a plastic film; assembly, the bamboo filament is paved and assembled to be a plate blank and made into the dyeing bamboo filament plate by high temperature and high pressure agglutination. The invention integrally combines the latest research results of multiple subjects such as wood science, dyestuff chemistry, surface physical chemistry, organic chemistry, mechanical processing and the like into a new material, and the bamboo filament is processed by dyeing and recombination to simulate woody texture and color of precious woods such as red wood, teak and hickory, so that the bamboo filament is combined with the dye by chemical action and physical chemistry action, and the bamboo filament has a certain fast color, so that the visual characteristic and the added value of the bamboo wood can be improved. The manufacturing technique can be widely used for manufacturing high quality floor, slicing veneer bamboo, making furniture, decorating materials and the like, thus improving the processing utilization rate of the bamboo wood of China, enhancing the competitive strength of the bamboo wood product and expanding the application field of bamboo articles.

The invention relates to a laser differential confocal LIBS, a Raman spectrum-mass spectrum imaging method and a Raman spectrum-mass spectrum imaging device and belongs to the technical fields of confocal microscopy imaging, mass spectrum imaging and spectral measurement. In the invention, the differential confocal microscopy imaging technology is combined with a spectrum and mass spectrum detection technology; a high-spatial-discrimination differential confocal system is used for axially focusing and imaging a sample; a mass spectrum detection system is used for performing mass spectrum detection to charged molecules and atoms in a sample microcell; and a spectral detection system is used for performing microcell spectrum detection to focal spot excitation spectrums (Raman spectrum and induced breakdown spectrum) of a differential confocal microscopy system, thereby achieving high-spatial discrimination and high-sensitivity imaging and detection of complete component information and configuration parameters of the sample microcell. The invention achieves advantage complement and structure and function fusion of laser poly-spectrum component imaging detection (mass spectrum, Raman spectrum and laser-induced breakdown spectrum). The method and the device have wide application prospect in the fields of biology, physical chemistry, micro-fabrication and nano-fabrication and the like.

The invention discloses a waterproof flame-retarding composite coiled material and a preparation method thereof. According to the invention, recycled waste materials are mainly used as a raw material; solid-state epoxy resin is added to the waste materials, such that the strength and corrosion resistance are improved, and physical and chemical cross-linking effects among the materials can be provided; other components such as a fire retardant, a waterproof agent, a curing agent and a vulcanizing agent are added to the materials; the materials are mixed, and the mixture is subject to a calendering technology, such that the coiled material is prepared. During the process, no adhesive is used, and no harmful substance is generated. The prepared coiled material is advantaged in high strength, good stability, good deformation resistance, high flatness, excellent moisture resistance, good nail-holding power, good flame retardance, good water resistance, and good corrosion resistance.

The invention discloses a polyarylether compound containing a quaternary ammonium salt side group and fluorenyl and a preparation method and application thereof. The polyarylether compound has a following structure: X is an arbitrary negative ion, x and y show degree of polymerization, the x ranges from 1 to 200, the y ranges from 0 to 200, and x / (x+y)*100% is equal to 0.5 to 100. The preparation method of the polyarylether compound includes: bisphenol fluorene monomer containing a tertiary amine side group, aromatic monomer containing halogen atoms or the aromatic monomer containing the halogen atoms and other bisphenol monomer are used as raw materials to be copolymerized to obtain polyarylether containing the tertiary amine side group and the fluorenyl, then the polyarylether is reacted with halogenated hydrocarbon, and finally the polyarylether compound containing the quaternary ammonium salt side group and the fluorenyl are obtained through exchange of the negative ion. The polyarylether compound serves as a framework of a proton exchange membrane, can meet requirements of alkaline fuel batteries and all-vanadium redox flow batteries for physical and chemical properties and mechanical properties of an ion exchange membrane, has high ionic conductivity, and improves self-discharge resistant performance of the batteries.

The present invention provides a super absorbent expansion thixotropy type block water paste with low density for optic cable and a preparing method thereof. The block water paste is prepared by raw materials by weight part as follows: synthesizing polyolefin oil with 0-80 parts, affinage mineral oil with 0-80 parts, high molecule hollow plastic powder with 1-8 parts, silica flour with 2-8 parts, high molecule restrain oil agent with 1-5 parts, high molecule absorbent expansion agent with 5-12 parts and anti-oxidant with 0.1-0.5 parts. The preparing method includes steps as follows: mixing and stirring the synthesizing polyolefin oil and affinage mineral oil, elevating temperature to 150-180 DEG C, removing residual volatile matter and moisture, then adding high molecule restrain oil agent for soluting the solid body fully, cooling to below 50 DEG C, adding the hollow plastic powder and stirring fully, then adding the anti-oxidant, the silica flour, the high molecule absorbent expansion agent orderly, then stirring equality for obtaining paste, mechanical lapping and homogenisation, vacuum out gas under stirring, pressuring and emptying through the filter, then obtaining the block water paste. The block water paste has less than 0.6 g / cm(3) denseness, and has stable physical chemistry property and better processing performance.

The invention belongs to the technical field of microscopic imaging and spectral measurement and relates to a high resolution spectral imaging and detection method and apparatus which combine confocal microscopic technology and spectral detection technology together, realize integration of images and spectrums and are used for three dimensional morphology reconstruction and micro-area morphological performance parameter measurement of a variety of samples. The method and apparatus utilize Rayleigh light abandoned by a traditional confocal Raman system and confocal technology for detection of the position of a sample, employs a spectral detection system for spectral detection and uses Brillouin diffusion light abandoned by a traditional confocal Raman detection technology to test properties like elasticity and piezoelectricity of a material, thereby realizing measurement of micro-area high spatial resolution morphological parameters of a sample. The method and apparatus provided by the invention have the advantages of accurate positioning, high spatial resolution, high spectral detection sensitivity, controllable measured spot size, etc. and have wide application prospects in fields like biomedicine, evidence collection of court, micro and nano-fabrication, material engineering, engineering physics, precise metering and physical chemistry.

This invention relates to a kind of anode material and method used for reducing preparation of lithium iron phosphate by vacuum carbon. It uses cheap phosphate, iron compound and lithium compound as raw material, compound of cheap heavy metal as adulteration modifying agent, cheap and abundant activated carbon, acetylene black and graphite as reducing agent. Dealing with it using ball milling techniques and makes solid-phase chemical reaction under the vacuum condition, then get the anode material adulterating lithium iron phosphate which contains carbon. Lithium iron phosphate compounded in this invention has a stable performance, physical chemistry of products has a good homogeneity and consistency and a high productivity; lithium iron phosphate produced in this invention has a high tap density and electric specific votume, good discharging capability of high-current, stable electrochemistry circulation capability, and low local action, besides, it is easy to control content of tantalum adulterated. The tap density of lithium iron phosphate produced by this method is 1.63-2.04g / cu cm, the highest discharging specific votume is 161.3mAh / g.

The invention relates to a laser confocal LIBS, a Raman spectrum-mass spectrum imaging method and a Raman spectrum-mass spectrum imaging device and belongs to the technical fields of confocal microscopy imaging, mass spectrum imaging and spectral measurement. In the invention, the confocal microscopy imaging technology is combined with a spectrum and mass spectrum detection technology; a high-spatial-discrimination confocal system is used for axially focusing and imaging a sample; a mass spectrum detection system is used for performing mass spectrum detection to charged molecules and atoms in a sample microcell; and a spectral detection system is used for performing microcell spectrum detection to focal spot excitation spectrums (Raman spectrum and induced breakdown spectrum) of a confocal microscopy system, thereby achieving high-spatial discrimination and high-sensitivity imaging and detection of complete component information and configuration parameters of the sample microcell. The invention achieves advantage complement and structure and function fusion of laser poly-spectrum component imaging detection (mass spectrum, Raman spectrum and laser-induced breakdown spectrum). The method and the device have wide application prospect in the fields of biology, physical chemistry, micro-fabrication and nano-fabrication and the like.

This invention discloses one environmental protection vegetation compound high school density fiberboard manufacture method. This method use straw stalk processing smashing,grinding paste, defibering, exerts urea resin rubber,preparation straw stalk executes the rubber textile fiber;then uses lumber grinding paste,defibering, exerts the urea resin rubber, preparation lumber executes rubber textile fiber, executes lumber rubber textile fiber and straw stalk executes rubber textile fiber according to the proportion mix; Executes rubber textile fiber paving to take shape, the thermo-compression becomes the high school density cellulose board; Is spatial airtight the element board through the center falls the aldehyde processing room, this processing room separated in two parts; falls aldehyde processing room to pass over the ammonia, causes the element board two sides to have the pressure difference, ammonia penetrates element board under the pressure difference function, the adjustment falls aldehyde processing room controlled variable, may prepare the E1 / E0 level environmental protection high and middle density fiberboard through the physical chemistry function. This invention reduced lumber consumption, protected the environment, and reduced the production cost, this product formaldehyde content has been low, guarantee product environmental protection target.

The present invention is high heat stability ordered mesoporous aluminum phosphate material and its preparation process, and belongs to the field of inorganic chemistry and physical chemistry technology. The mesoporous aluminum phosphate material has composition of P2O5-Al2O3-MXOY, skeleton with primary and secondary zeolite structure units, 2D hexagonal structure, high heat stability and high degree of order. The preparation process includes synthesizing precursor solution containing the primary and secondary microporous aluminum phosphate zeolite structure units by using organic amine as template agent; and subsequent self-assembling process of the precursor and cationic surfactant to synthesize the ordered mesoporous aluminum phosphate material. The prepared mesoporous material has high specific surface area and atom connecting mode of microporous molecular sieve, may have several hetero atoms introduced, and may be used widely in chemical fields.

The invention belongs to the field of a microimaging and spectral measurement technology and relates to a laser differential confocal Brillouin-Raman spectroscopy measuring method and a device thereof which can be used in micro-area morphological parameter comprehensive test and high-resolution imaging of a sample. According to the method and the device, a differential confocal technology is incorporated into spectrum detection. Sample position detection is performed by the differential confocal technology; spectrum detection is conducted by a spectrum detection system; and properties, such as elasticity, piezoelectricity and the like, of a material are tested by the use of brillouin scattering light abandoned by a traditional confocal Raman spectrum detection technology. Thus, micro-area high-spatial resolution morphological parameter measurement of a sample is realized. The method and the device have advantages of accurate positioning, high spatial resolution, high spectrum detection sensitivity, controllable measured focusing spot size and the like, and have a wide application prospect in fields of biomedicine, evidence obtaining in court, micro and nano-fabrication, materials engineering, engineering physics, precision metrology, physical chemistry and the like.

A device to place an incision into matter with a harmonious plasma cloud. A radiofrequency generator system produces pulsed or continuous electromagnetic waveform which is transmitted by an active transmitter incising electrode tip. This generated electromagnetic wave is utilized to initiate a plasma cloud with processes such as thermal ionization and a photoelectric effect which then trigger an Avalanche Effect for charged atomic particles at the surface of the active transmitter incising electrode tip. This electromagnetic wave is impedance matched, frequency matched, power matched and tuned to the plasma cloud in order to sustain and control a harmonious plasma cloud with reduced atomic particle turbulence and chaos. This harmonious plasma cloud forms a coating over the surface of the active transmitter electrode tip as well as acts to reduce the energy needed from the power amplifier of our plasma cutting device. The electromagnetic wave is also used to produce a Pinch Effect to compress, contour, shape and control the harmonious plasma cloud. The electromagnetic wave is furthermore used to trap and contain the plasma cloud without the need of a solid matter containment vessel according to the Magnetic Bottle Effect of physics and a generated centripetal electric field force that acts to pull plasma particles inward toward the activated incising electrode tip. The Tunnelling Effect of physical chemistry is utilized to focus and amplify the energy delivered to the harmonious plasma cloud while shielding matter surrounding the intended path of incision from potential electromagnetic radiation exposure. The invention is an efficient, effective, safe, clean and inexpensive device which can be used to place an incision in matter.

The invention relates to a preparation method of a metal complex functionalized hydrotalcite-like nano-layer sheet, which belongs to the field of physical chemistry and material chemistry. The preparation method comprises the following steps of: utilizing metal complex functionalized silane to be directly reacted with surface hydroxyl on a hydrotalcite-like nano-layer sheet after stripping a layer so as to graft a metal complex on the hydrotalcite-like nano-layer sheet, and simultaneously utilizing the reaction of the silane and the surface hydroxyl and the electronic and three-dimensional effects of the grafted metal complex to weaken the electrostatic interaction between the stripped layer and the nano-layer sheet, thereby improving the stability of the hydrotalcite-like nano-layer sheet, preventing the hydrotalcite-like nano-layer sheet from being compounded after a solvent is removed, and still keeping the state of the nano-layer sheet. An organic-inorganic composite material prepared by adopting the method has the characteristics of large specific surface area and high content of the metal complex, and simultaneously has the multifunctional catalytic performances of hydrotalcite-like and the metal complex.

The invention discloses a method of computing the interactive force between proteins and DNA through computer simulating. In the method, the NAMD_2.6 computing software and the VMD-1.8.6 analysis software are used for molecule dynamics simulation: firstly the protein structure in the PDB database is made into an appropriate research system, then the system is treated for energy minimization, and when the system is heated to the preset temperature, the system is treated for multi-stage balancing; then molecule dynamics simulation is carried out for the system, the target research objects in the system are marked, SMD simulation is carried out for the system, and finally data are processed and analyzed to acquire change of the interactive force between proteins and DNA, and to calculate the maximum interactive force. The method is characterized by wide range of test objects, easy preparation of experimental material, low requirements to devices, high utilization rate, easy and widely application in the fields of life science, physical chemistry and medicine related to molecule identification and gene representing behaviors.

The invention discloses material performance experimental simulator. It includes material mechanical testing machine, mini type normal pressure subsonic speed combustion gas flow wind tunnel, servo drive, and gas control system. The material mechanical testing machine and mini type normal pressure subsonic speed combustion gas flow wind tunnel are upright. The test piece is set in the latter of which axle pin is fixedly connected with the servo drive. The invention can realize the experimental simulation for re-entry atmosphere heat physical chemistry environment, aerodynamic loading, and rotating loading.

The invention provides an enteron intelligent drug releasing capsule system and a method used for carrying out intelligent drug releasing of enteron of animal or human body. The system comprises a drug releasing electronic capsule and an information processing device; the drug releasing electronic capsule comprises a shell, a mini-typed battery, a sensor module, a drug releasing function module and a central control module; the parts are encapsulated inside the shell; the sensor module detects the physical chemistry or biochemical parameters inside the enteron with given time interval, and carries out the drug releasing intelligently according to the sensor module detection information. The system and the method of the invention can detect the physical chemistry or biochemical parameters of the enteron in real-time and control the drug releasing intelligently on the basis of the parameter processing, thus leading the drug to be released in the enteron within the best time and at the best position; the system and the method of the invention are novel noninvasine intelligent disease diagnosis and treatment system and method.

The invention discloses a preparation method of photothermal self-lubricating oil gel for liquid drop remote accurate driving, and belongs to the field of interfacial physical chemistry. Nano-particles are mixed with polydimethylsiloxane and curing agents and heated and cured to obtain nano-particle and polydimethylsiloxane composite materials, and the composite materials are soaked in lubricating liquid and swell to obtain the photothermal self-lubricating oil gel. Both contact angle hysteresis and the slide angle of the surface of the prepared photothermal self-lubricating oil gel for liquid drops with different surface tension are smaller than 5 degrees, rapid response to near infrared laser can be realized, large local temperature gradient fields are formed in surfaces of the materials, and further driving of the liquid drops on the surfaces of the materials can be remotely and accurately controlled. By adjusting the irradiation point position and the direction of the near infrared laser, the liquid drops can move along set complicated tracks or climb up on inclined surfaces by overcoming gravity.

The invention relates to a multilayer vegetation zone water quality in situ purification method for a highly polluted tributary inlet, which is characterized in that reinforcing steel bars with the diameter of 6 and steel wires are manufactured into gabion frames with the diameter of about 1m; one end of each gabion frame is sealed; the other end of each gabion frame is movable; rock blocks, gravels and soil are added to the gabion frames; emergent aquatic plant root systems such as reeds, acorus calamus and the like are planted in soil; and each movable end is sealed and is manufactured into a gabion body with the length which is determined according to the river width of the tributary inlet to be purified. A plurality of gabion bodies are combined by timber piles and fixed at the tributary inlet to be repaired; ripraps are used for side pressing; submerged plants such as tape grasses, waterweeds an the like are planted between two gabion bodies so as to form a multilayer vegetation zone water quality in situ purification system which takes the plurality of gabion bodies and emergent aquatic plants on the gabion bodies as the main parts and is assisted by the submerge plants among the gabions. The method has the advantages of gradually purifying water body of the highly polluted tributary inlet under of physical chemistry and biological functions including matrix interception, micro-biological degradation, plant system absorption, root system adsorption and the like and improving water environments of the tributary inlet so as to provide effective guarantee for the quality of water flowing into a main stream.

The invention discloses a self-cleaning coating, which is formed by compounding one or various coatings in one time or multiple times. The coating at least comprises the following three substances: a)hydrophilic material, b) hydrophobic material, c) porous material, d) photocatalysis material and e) antistatic material. The self-cleaning coating is a functional material which compounds more thanthree specific physical properties, one-time or multi-time compounding is used for forming a self-cleaning surface so as to form an environment-friendly self-cleaning surface, the surface can be formed by the coating, and the surface also can be constructed by chemical vapor deposition or physical vapor deposition according to a key principle. According to the self-cleaning coating, through an innovative physical chemistry design, various physical chemistry surface characteristics are integrated. According to the construction method, advanced self-cleaning surfaces superior to common self-cleaning coatings and the like sold in the market can be produced.

The present invention relates to physical chemistry and can be used for a quality test of liquids, in particular, multi-component liquid products, to ascertain the conformity of various process liquids, pharmaceutical preparations, foodstuffs, biological liquids to standard in pharmacology, food processing and chemical industries, and in medical diagnostics. The method of invention enables determining of the mechanical impedance within a drop (1) of test liquid having a specified volume, in the preferred embodiment, 5 mcl, placed on the surface of a piezoelectric resonator (3) of ultrasound frequencies, which provides for excitation of shear modes within drop (1) while it is drying up. The obtained time dependence of the mechanical impedance of drop (1) is used as the information parameter. This information parameter is rather sensitive to the state of the liquid-crystalline structure of multi-component liquids, therefore, comparing the obtained time dependence with the same data for the etalon specimen allows one to assess the composition of a multi-component liquid, test the quality of liquid products, for example, foodstuffs, assess the prospective effectiveness of medical treatment with various medical preparations through analysis of a biological liquid, etc.In the apparatus of invention, the mechanical impedance of test liquid is determined from the disbalance voltage of a bridge circuit (9) comprising a piezoelectric resonator of ultrasound frequencies (3), in preferred embodiments, from the amplitude and / or phase of the disbalance voltage, which ensures high accuracy of measurements.

The invention relates to a dielectrophoresis separation system for recycling precious metals, which comprises a mixer, a separation chamber and a collector, wherein the dielectrophoresis separation chamber is in a vertical hexagonal barrel shape; the six edges in the hexagonal barrel are respectively provided with a stainless steel sheet electrode; the center shaft in the hexagonal barrel corresponding to each stainless steel sheet electrode is evenly equipped with an insulated wire electrode; the collector is installed below the insulated wire electrodes; the lower end of the dielectrophoresis separation chamber is coaxially provided with the collector; a funnel organ is installed in the collector corresponding to the lower end of the insulated wire electrode; the funnel organ is communicated with an output pipe; and the lower bottom of the collector is provided with a cyclic outlet. The invention acquires unseparated precious metal granules in precious metal waste by utilizing the unique high selectivity and high controllability in the dielectrophoresis principle in physical chemistry to maximally recycle precious metals and minimize the possible environmental pollution caused by precious metals. The invention provides a brand new environment-friendly high-efficiency continuous separation technology for separating and recycling precious metals in tailings and waste. The invention has the advantages of environmental protection and energy saving, and is beneficial to further separation of precious metals in precious metal lean ores and tailings in China.

The invention discloses a method for comprehensively extracting active matters from rice processing byproducts such as rice bran and grain embryo. The rice bran, the grain embryo and the like are taken as raw materials, and the method comprises the following steps of: converting by using an endogenous enzyme method and extracting to obtain gamma-aminobutyric acid; extracting the active matters according to physical and chemical characteristics of the active matters in a certain order; extracting natural rice bran ceramide from a filter cake subjected to gamma-aminobutyric acid extraction by using an amphiprotic solvent; stepwise precipitating by using ethanol to obtain rice bran polysaccharide; and extruding and bulking the filter cake to prepare rice bran dietary fibers. The rice processing byproduct resources such as the rice bran and the grain embryo are fully utilized, the wastes generated in the production process are reduced, and higher economic and social benefits are achieved.

The invention relates to the fields of macromolecular substances, physical chemistry, molecular biology and virology, in particular to solution of chitosan, preparation method thereof and a method for using the same to improve the efficiency of gene transduction mediated by an adenoviral vector.