92results about How to "Good separation" patented technology

There is described a method of moveout or velocity analysis of seismic signals using the steps of obtaining such signals 5 from a plurality of receivers, identifying receiver functions within the acoustic signals, analyzing said receiver functions for velocity or moveout characteristics, using the result of said analyzing step to determine, properties of multiple layers of earth located below said 10 receivers. The analyses can involve the use of representation of the traveltime differences as approximated power series of slowness or horizontal distances. The method is the first to comprehensively deal with a multi-layered earth or velocity model.

Disclosed herein are mixed matrix membranes which include a continuous phase organic polymer with molecular sieves interspersed therein, the molecular sieves comprising one or more zeolites having an HEU structure type; wherein the membrane exhibits a mixed matrix effect and further wherein the membrane has a N₂/CH₄ selectivity of greater than about 5, at 35° C. and a pressure of 100 psia (690 kPa). Methods for their preparation and use are also disclosed.

The invention relates to a pollution-free tube-bundle separation-type permanent-magnet separating device being suitable for separating superfine magnetic particles, which comprises a permanent-magnet magnetic field and a separating room, wherein a plurality of separating tubes are installed inside the separating room, and magnetic conduction media such as threadlike steel wool or steel emery are installed at the outer side of each separating tube. An annular permanent magnet is fixed on a rotating shaft at the outer side of the separating room. A C-shaped permanent magnet is adopted to produce high magnetic density and gradient, the magnetic field is applied to the periphery of the tube bundle through the filled magnetic conduction substances, and the fluid is separated from the magnetic conduction substances through the separating tubes so as to prevent the fluid from corroding and polluting the steel wool and the like. The device has a simple structure, is convenient to operate, is suitable for separating the magnetic carrier or catalyst from the fluid, and is particularly suitable for separating the weak magnetic superfine particles in the fluid.

The invention provides a method for establishing the HPLC (High Performance Liquid Chromatography) fingerprinting quality of a GAP (Good Aquaculture Practices) evodia material and extractives thereof in Yuqing, Guizhou, and the method comprises the following steps: preparing a sample solution to be tested; preparing the extractives; determining chromatography conditions; utilizing an HPLC to measure; selecting two counterfeit drugs (pepper and coriaria sinica) of the evodia for the first time to finish the applicability inspection of the fingerprinting; obtaining the HPLC fingerprinting of the evodia material and the extractives thereof; expressing the integral chemical information of the evodia material and the extractives thereof more comprehensively; and determining the finger characteristics of the evodia material and the extractives thereof. The fingerprinting comprises a water solubility part and a lipid solubility part, has the characteristics of simple and convenient method, good repeatability, multiple characteristic peaks, accuracy and reliability. The established HPLC fingerprinting can be used for effectively controlling the quality of the evodia material and the extractives thereof and identifying truth or falsity.

The invention relates to a polarization light splitter and an LCOS liquid crystal stereographic projection system which uses the polarization light splitter. The polarization light splitter mainly comprises a non-light tight prism and polarization light splitting faces arranged on the prism, wherein, the polarization light splitter comprises three polarization light splitting faces and is combined into a whole by three or four prisms; thereby the polarization light splitter has the advantages of simple structure and good light utilization factor; moreover, unpolarized lights which pass through the polarization light splitter can be split into an S polarized light and a P polarized light which are relative high in purity. The LCOS liquid crystal stereographic projection of the invention adopts the polarization light splitter and two LCOS liquid crystal panels synchronously driven by image signals; before the S polarized light and the P polarized light are finally projected onto the projecting lens, the S polarized light and the P polarized light undergo three filtrations and two filtrations respectively, which contributes to the relatively high contrast; moreover, the separation between the S polarized light and the P polarized light which carry different image signals respectively is quite high. The projection system of the invention has the advantages of compact structure, and good image quality and stereo display effect.

The invention relates to a plasmid vector and a method for building a plant population by using the plasmid vector. The plasmid vector contains, at a replication origin, a gene expression box for expressing Cas9 protein, a first promoter, nucleotide sequences containing suicide gene sequences, a gRNA scaffold element and a termination signal, and at least one first enzyme cutting site located on the nucleotide sequence 5' end containing the suicide gene sequence and at least one second enzyme cutting site located at the nucleotide sequence 3' end containing the suicide gene sequence; furthermore, no first enzyme cutting site and no second enzyme cutting site exist in other positions of the plasmid vector. The first promoter is located at the upstream of the termination signal; the nucleotide sequences containing suicide gene sequences and the gRNA scaffold element are all located between the first promoter and the termination signal.

The invention relates to the field of the organic semiconductor thin-film solar cell, and specifically discloses a centrifugal assistant light active layer stratified organic solar cell based on spinning-coating process, and a preparation method thereof. The preparation method comprises the following steps: S1, cleaning a baseplate composed of a transparent substrate and an ITO transparent conductive cathode layer, and blow-drying by using nitrogen after cleaning; S2, spinning-coating, printing or spraying PEDOT: PSS precursor solution on the ITO transparent conductive cathode layer surface, and preparing an anode buffer layer, and performing low-temperature baking on the formed thin-film; S3, preparing a PBDB-ITIC light active layer on the anode buffer layer by adopting the spinning-coating process; S4, adhering the baseplate spun-coated with the PBDB-T:ITIC light active layer to a vertical sidewall to perform rotary centrifuging; S5, performing thermal annealing treatment on the PBDB-T:ITIC light active layer in a glovebox; S6, evaporating LiF on the PBDB-T:ITIC light active layer surface under the condition that the vacuum degree is 3*10<3>Pa, and preparing a cathode buffer layer; and S7, evaporating a metal cathode layer on the cathode buffer layer. And an aim of improving various performance parameters of the organic solar cell is finally improved.

The invention discloses a high efficiency separation and purification method for polygalacic acids and polygala root sapogenin. The method is as follows: firstly, polygala root raw medicinal materials are extracted by the backflow of methanol and hydrolyzed by hydrochloric acids so as to obtain semi-finished products, and the contents of the polygalacic acids and polygala root sapogenin are measured by the analysis mode high performance liquid chromatograph; secondly, an etrahydrofuran solvent is used to dissolve the semi-finished products, and by taking the mixed solvent of tetrahydrofuran-water-organic acid as an eluting mobile phase and utilizing a high efficiency preparation liquid chromatogram separating system, filtrates obtained during the step of dissolving the semi-finished products are eluted and separated so as to obtain purified products of polygalacic acids and polygala root sapogenin, purities of which are both more than 98 percent. The method has the advantages of big preparation quantity, high yield and good purity of products, and realizes the synchronous separation of polygalacic acids and polygala root sapogenin, thereby the method is suitable for the industrialized production; meanwhile, the invention also provides a high efficiency liquid phase chromatogram analysis method for polygalacic acids and polygala root sapogenin, which greatly improves the degree of separation of polygalacic acids and polygala root sapogenin in a liquid chromatogram.

Liquid communication means for an electrolyser module comprising a plurality of structural plates each having a sidewall extending between opposite end faces with a half cell chamber opening and at least two degassing chamber openings extending through the structural plate between the opposite end faces, the liquid communication means facilitating liquid communication between the at least two degassing chambers.

The invention relates to a compressor and an air conditioning system. The compressor comprises an impeller, a diffusion flow channel and an air supplementing channel, wherein the impeller is used foraccelerating air entering the compressor, the diffusion flow channel communicates with an air outlet of the impeller, and is used for compressing the air entering the diffusion flow channel, and the air supplementing channel communicates with an air inlet of the diffusion flow channel and is used for supplementing the air into the diffusion flow channel. According to the compressor, the air supplementing channel communicating with the air inlet of the diffusion flow channel is arranged to introduce the supplemented air into the diffusion flow channel, when the compressor operates under partialloads, the pressure in the diffusion flow channel can be kept, the air separation condition can be improved, the surge can be effectively prevented, the compressor can normally run under the partialload working condition, so that the operation range of the compressor is expanded; and the structure of the way that surge is prevented through the air supplementation is simple, and manufacturing andmaintaining are convenient.

The present invention discloses a grinding oil-water separator of crude oil, including motor, harmonic d-axis speed reducer and abrader in the interior of abrader a screw shaft is mounted, and a grinding ball is mounted, the tower portions of said abrader is equipped with a lower box, and between abrader and lower box a perforated plate is mounted. The crude oil is passed through inlet, and fed into the lower box, the mixed liquor being in the lower box also is passed through the perforated plate and fed into the separator, ground and separated, then fed into big tank by means of outlet of upper portion of the abrader. Said invented separator can produce lots of heat quantity in the course of separation to raise temperature of oil-water mixture so as to promote separation of oil and water.

The invention discloses a preparation method of a shape memory imprinting gel, and belongs to the technical field of adsorption material preparation. A prepared water-soluble phenylboronic acid, usedas a functional monomer, and tetrodotoxin are polymerized through a Pickering emulsion technology by utilizing the affinity effect of boron with nano-silica as a stable particle, a dispersion as a water phase and octadecyl methacrylate as an oil phase, an emulsion is introduced, polymerization is initiated by utilizing ultraviolet light to obtain a gel, and template molecules are eluted to obtainthe shape memory imprinting gel. The shape memory imprinted gel has a good adsorption separation performance and a remarkable adsorption separation effect on tetrodotoxin when applied to adsorption separation of tetrodotoxin in an aqueous solution. The prepared imprinted gel can be swelled and fully contacted with water after entering the water, the formed gel has a good structure, is not prone tobeing dispersed, can be restored to the original shape through drying after adsorption, has a certain shape memory function, is convenient for TTX enrichment, and can be repeatedly used and recycled.

The invention provides a method for measuring content of calycosin-7-glucoside in lung tonifying and blood circulation promoting capsules. The method has good separation degree, high specificity, high precision, good repeatability, high recovery rate, good stability and measurement result accuracy. Besides, the method can also be used for measuring the content of calycosin simultaneously, so that the stability of medicine quality as well as the safety and effectiveness of clinical medication can be guaranteed.

The invention discloses a method for separating and purifying a crude lanosterol product in the technical field of the purification of organic substances, which comprises the steps of: dissolving the crude lanosterol product into an organic solvent at a temperature of between 25 and 40 DEG C through ultrasonic treatment to obtain a lanosterol solution; and filtering the lanosterol solution by a filter membrane, then using preparative high performance liquid chromatography to adopt overlapping injection for separation and purification treatment to obtain purified lanosterol. The method adopts reversed-phase high performance liquid chromatography, can ensure the characteristics of good resolution, high yield, high recovery rate, good purity and the like, can directly separate to obtain the lanosterol with the purity over 97 percent, and can be used for various sterol-related diseases and the research and development of biosynthetic pathways of various natural products. The method applies technology such as overlapping injection and linear amplification to overcome the disadvantage of low solubility caused by using reversed-phase chromatography to separate the lanosterol, uses a preparation column with the inner diameter of 20mm and the column length of 250mm, ensures that the daily preparation amount can reach near 250mg, and can meet various scientific and research requirements.

The invention provides a method for quantitatively analyzing the total amount of 2-ethylanthraquinone, tetralin-2 ethylanthraquinone and degradation substances in a hydrogen peroxide working solution produced by anthraquinone process by using normal-phase efficient liquid adsorption chromatography. Compared with the conventional reverse-phase efficient liquid distribution chromatography analysis method, the method has the advantages that separation degree of different types of substances including a heavy aromatics series, anthraquinone and degradation substance series and trioctyl phosphate is high, analysis time is short, and the sensitivity of a degradation substance peak is high. Besides, the problem that a heavy aromatics C10 component and a 2-ethylanthraquinone and degradation substance peak are overlapped in reverse-phase liquid distribution chromatography analysis is solved, and an analysis result is accurate.

The invention discloses a detection method for a kidney tonifying and vigour nourishing mixture. According to the method, HPLC is adopted to simultaneously determine contents of two effective ingredients of psoralen and isopsoralen in the kidney tonifying and vigour nourishing mixture. According to the present invention, the method of the present invention has characteristics of high sensitivity, good resolution, stable baseline, and no interference on the negative control, and the accuracy, the reproducibility, the linear relation and the stability of the method can meet the requirements of scientific research and production.

The invention discloses an analysis method of cyclic adenosine monophosphate in red jujubes. The method comprises the following steps: step 1, establishment of a quantitative working curve; step 2, establishment of chromatographic conditions; and step 3, establishment of mass spectrometry conditions. According to Tthe invention, establishes a high performance liquid chromatography-tandem mass spectrometry method is established for measuring cyclic adenosine monophosphate, and the method has the characteristics of short analysis time, good separation degree, high sensitivity, strong anti-matrixinterference capability and simple and convenient operation. In addition, the high performance liquid chromatography-tandem mass spectrometry method can provide accurate molecular weight informationof compound parent ions and daughter ions, can conclude a molecular formula, is very suitable for structural analysis and discrimination of compounds, and provides a scientific research and analysis method for researching the content of cyclic adenosine monophosphate in vivo at the later period.

The invention relates to a garbage air separation system. The system involves an air separation chamber, a conveying belt, a draught fan, an air outlet pipeline and a first air return pipeline; the air separation chamber is provided with a hollow inner cavity, a feeding port, a light garbage outlet, a heavy garbage outlet, a first air inlet and a first air return port; the air outlet pipeline extends into the hollow inner cavity of the air separation chamber, and the air outlet position of the air outlet pipeline is lower than and close to the conveying tail end of the conveying belt; the airseparation chamber is further provided with a second air return port and a second air inlet which communicate with the hollow inner cavity; and the air separation system further involves a second airreturn pipeline, the second air inlet is higher than the conveying belt and close to the conveying starting end of the conveying belt, and the second air return pipeline communicates with the air separation chamber to form an air duct of another cycle. According to the system, when mixed materials fall into the conveying belt, air begins to act on the mixed materials, light garbage on the conveying belt can be blown up instead of being blown up at the conveying tail end of the conveying belt, and therefore the light garbage are not prone to being transversely blocked by heavy garbage and is not prone to entering the heavy garbage outlet.

The invention relates to the technical field of drug detection and particularly relates to a detection method for related substances in a dexmedetomidine hydrochloride raw material or preparation. According to the method, dexmedetomidine hydrochloride and other inactive substances can be separated well and content of impurities can be accurately measured. According to the detection method providedby the invention, good propulsion effect for uniform establishment of quality control and standard of a product can be provided. According to the method, a high-performance liquid chromatography is employed; a detection wavelength is 215-220nm; a column temperature is 30-40 degrees centigrade; octadecyl silane bonded silica gel is taken as filler; acetonitrile-phosphate buffer is taken as mobilephase A; acetonitrile is taken as mobile phase B; trapping small columns are mounted between a gradient mixer and a sample injector; and gradient elution is carried out according to parameters set bythe method. According to the method, through adoption of the specific mobile phases and gradient elution parameters, the problem that the prior art is poor in separation degree and chromatographic column tolerance and high in cost is avoided.

The invention relates to the technical field of a method for chemical drug analysis, and particularly phthalic anhydride and a detection method for related substances thereof. The detection method ischaracterized in that performing gradient elution on a high-performance liquid chromatograph, the phthalic anhydride peaks in the form of phthalic acid under the condition. The chromatographic condition comprises that: the chromatographic column is an octyl silane bonded silica gel chromatographic column, a potassium dihydrogen phosphate buffer solution is mobile phase A, acetonitrile is mobile phase B, the detection wavelength is 225 to 235 nm, the column temperature is 30 to 37 DEG C, the flow rate is 0.8 to 1.2 mL/min, and gradient elution is performed. The preparation method of the mobilephase A comprises the following steps: taking 0.61 g potassium dihydrogen phosphate; dissolving with water and diluting to 1000 mL; and adjusting the pH value to 2.2 to 2.6 with phosphoric acid. According to the phthalic anhydride and the detection method for the related substances thereof, the phthalic anhydride and the related substances can be effectively separated, the separation degree is good, so that the quality of the phthalic anhydride can be effectively controlled.

The invention discloses a processed rhubarb or/and raw rhubarb detection method and further discloses a ninefold processed rhubarb quality detection method and a ninefold processed rhubarb preparation method. The ninefold processed rhubarb or/and the raw rhubarb detection method adopts methanol as an organic phase for distinguish and detection of ninefold processed rhubarb and the raw rhubarb, the degree of separation of each composition is high, and quality of the ninefold processed rhubarb and the raw rhubarb can be better controlled. Further, using the methanol as the organic phase greatly saves detection cost and protects the environment. Differences between the ninefold processed rhubarb and other processed products or the raw rhubarb can be clearly distinguished by the ninefold processed rhubarb quality detection method, so that safety in use of the ninefold processed rhubarb is guaranteed. By the processing method, traditional steaming and drying for nine times are reduced to high-pressure steaming for one to three times, so that operating steps are greatly reduced, labor hours are shortened, and processing of the traditional Chinese medicine rhubarb is provided with a novel method and thought.

The invention relates to the quality inspection field of traditional Chinese medicine, in particular to a quality control method of compound preparation of an active extracting compound containing Duan-xu and panax notoginseng. The invention establishes the quality control method on a capsule and a tablet of the active extracting compound containing the Duan-xu and the panax notoginseng. The the quality control method comprises identification, dissolving out rate, the content mensuration of total saponin, and the content mensuration of akebiaquinata saponin D, panax notoginseng saponin R1, ginsenoside Rg1, and ginsenoside Rb1. The quality control method which has good reproducibility and reliability can be used in the quality control of a compound capsule and a compound tablet of the active extracting compound containing the Duan-xu and the panax notoginseng.

The invention, which belongs to the field of drug quality control, discloses a fingerprint of preparation for muscle relaxing and blood circulation stimulation and application thereof in overall quality evaluation. A test solution and a control mixed solution are detected by using liquid chromatography to obtain achromatogram map and a fingerprint is constructed; and overall quality evaluation isperformed on a preparation for muscle relaxing and blood circulation stimulation by combining principal component analysis (PCA), cluster analysis (CA), and orthogonal partial least squares discriminant analysis (OPLS-DA). The result shows that the established fingerprint combined with the chemical pattern recognition method is stable and simple; four common peaks with the largest differences aredetermined; and thus the fingerprint can be used for evaluating the quality of the preparation for muscle relaxing and blood circulation stimulation.

The invention provides an efficient preparation method and application of a high-purity amide alkaloid component, and belongs to the technical field of extraction and preparation of effective components of traditional Chinese medicines. According to the method, the total amide alkaloids in the piper longum are enriched through the pH value, therefore, the method for separating and purifying piperlongum amide alkaloids by high-speed counter-current chromatography is established. Finally, ten amide alkaloids such as piper longum minine are separated from the piper longum crude extract. The method lays a foundation for further research on pharmacological properties of piper longum amide alkaloid, research and development of related drugs and the like, is simple in separation and extraction method, good in separation degree and high in purity, has universality, and provides a new solution idea for extraction and analysis of alkaloid and other related compounds in piper longum and piper nigrum plants.

The invention discloses a method for rapidly detecting a phenyllactic acid content by using reversed-phase high performance liquid chromatography and belongs to the food detection technology field. Chromatographic conditions comprise that a C18 chromatographic column (4.6*250 mm, 5mum) is included; a mobile phase A is a 0.05% trifluoroacetic acid water solution; a mobile phase B is acetonitrile, and the volume ratio of mobile phases A and B is 3:1; a flow rate is 1 mL/min; a sample size is 10 muL; a chromatographic column temperature is 20-30 DEG C; and a detection wavelength is 210 nm. Impurities and phenyllactic acid in a sample to be tested are separated, the content of the phenyllactic acid is detected, and qualitative and quantitative operation is performed on the phenyllactic acid through retention time and a peak area. The operation of the method is simple, detection is rapid, cost is low, qualitative and quantitative operation is accurate, separation with an impurity peak can be achieved, and the method is suitable for the rapid batch detection of a total phenyllactic acid amount in food and a fermentation solution.

The invention relates to a method for preparing an organic solar cell with a vertical phase gradient distribution photoactive layer by an oscillation-assisted spin-coating process. The organic solar cell adopts an inversion structure and sequentially comprises a substrate, a transparent conductive cathode ITO, a ZnO cathode buffer layer, a photoactive layer, an MoO3 anode buffer layer and a metalanode from bottom to top. Before the spin coating of the active layer, the ultrasonic oscillation is carried out on an active layer solution dropwise covering the ZnO cathode buffer layer, so that the solution is promoted to form the vertical phase gradient distribution morphology that a micromolecular non-fullerene material with smaller volume is deposited below the solution and a polymer molecular material with larger volume is enriched above the solution, and the problems that the separation and transmission of the photon-generated carriers and the transmission efficiency between interfaces are low due to the poor internal phase separation of a non-fullerene system photoactive layer, so that a device has higher interface contact resistance and higher carrier recombination probability,and finally the performance of the device is reduced, are solved.

The invention discloses an HPLC analysis method of key intermediate impurities for dipyridamole synthesis. In the HPLC analysis method, a chromatographic column uses phenylsilane-bonded silica gel asa filler, an organic phase containing an acidic additive is used as a mobile phase A, an aqueous solution containing the acidic additive is used as a mobile phase B, a gradient elution method is adopted, the detection wavelength is 210-230 nm, and a key intermediate of the dipyridamole, namely 2,6-dichloro-4, 8-di(piperidin-1-yl)pyrimido[5,4-d] pyrimidine, and related impurities thereof are separated and determinated. The HPLC analysis method has the characteristics of a good degree of separation, simpleness, rapidity, high specificity and high sensitivity; by the HPLC analysis method, the quality of the key intermediate dichloride during the dipyridamole synthesis can be controlled, so that the post-treatment is simplified and the quality of a final product is guaranteed.

The present invention provides a fingerprint detection method of Danshu capsule. The method using a gas chromatography detection method with the initial temperature of 73 DEG C-75 DEG C, and the terminal temperature of 160 DEG C-200 DEG C; programming temperature rises is employed; the inlet temperature is at 250 DEG C, and the detector temperature is at 250 DEG C; and a sample solution prepared from Danshutong capsule contents is detected. The detection method can detect a plurality of components, has good separation on the components, can provide effective standards for quality control of Danshutong capsule; the overall peak time is short, thereby greatly reducing the detection time and cost; and the method is more conducive to industrial applications.