200results about How to "Production economy" patented technology

For evaluation of a measured parameter with a measuring cell having a cavity which generates for light an optical path length difference changing corresponding to the variation of the measured parameter, the method includes: introducing light from a white light source with the aid of an optical waveguide via a coupler (3) disposed in the path of the optical waveguide into the cavity, coupling out at least a portion of the light reflected back into the optical waveguide from the cavity with the aid of the coupler and conducting this reflected light to an optical spectrometer, determining the optical spectrum of the reflected light in the spectrometer and generating a spectrometer signal, conducting the spectrometer signal to a computing unit, wherein the spectrometer signal is directly converted through the computing unit to an interferogram and from its intensity progression the location of the particular extremal amplitude value is determined and this particular location represents directly the particular value of the optical path length difference in the cavity, which comprises the measured parameter.

The invention provides a display correcting method and a display correcting device for naked-eye stereo display equipment. The display correcting method comprises the following steps: acquiring a first predetermined image displayed by the naked-eye stereo display equipment according to preset image arrangement parameters; according to the first predetermined image, acquiring actual image attributes of the first predetermined image; according to the preset image arrangement parameters and the actual image attributes of the first predetermined image, acquiring first correcting parameters; storing the first correcting parameters, and performing naked-eye stereo display by the naked-eye stereo display equipment according to the first correcting parameters. An error appearing in the production process of a display device of the naked-eye stereo display equipment is detected, the correcting parameters are stored, and during the follow-up naked-eye stereo display, display is corrected according to the correcting parameters, so that the display equipment displays a standard image and a stereo display effect is ensured; the display correcting method provided by the invention is applicable to different display equipment; With the display correcting method, the correcting process is simplified and the design cost is saved.

Provided herein are stem cell and exosome compositions having therapeutic utility to treat a variety of diseases and disorders, e.g., cardiovascular disease, Duchenne muscular dystrophy, and fibrotic disease.

The invention discloses a preparation method of triamcinolone acetonide. A compound I prednisone acetate which is taken as a starting material is subjected to a primary elimination reaction, an oxidation reaction, a condensation reaction, a reduction reaction, a secondary elimination reaction, a hydrolysis reaction, an epoxidation reaction and a fluorination reaction, so that an end-product IX, 9-fluoro-11beta, 21-dihydroxyl-16a,17-[(1-methyl ethylidene) bi(oxo)]-pregnen steroid-1,4-diene-3, 20-diketone, namely triamcinolone acetonide, is obtained. The preparation method of the triamcinolone acetonide has the advantages that a relatively cheap starting raw material is adopted, each reaction step can be relatively easily realized, and yield is relatively high, so that production is more economic and safer, and the triamcinolone acetonide is more applicable to industrial production; a multi-step protection and deprotection operation is simplified, a synthetic route is greatly shortened, and production cost is reduced; possibility that a three-position carbonyl group is reduced in a reduction process is almost zero, so that side effects are greatly reduced, and yield and quality of the reduction reaction are improved.

The invention discloses a production method of rare ginsenoside Rh2 and belongs to the field of enzymatic synthesis of ginsenoside. The production method includes that protopanoxadiol is used as a substrate, glycosyltransferase YjiC or YojK screened from bacillus subtilis is used as a catalyst, and the glycosylation of the C3 hydroxyl of the protopanoxadiol is efficiently catalyzed through in-vitro enzyme reaction to generate the ginsenoside Rh2. The production method is cheap in raw materials, high in ginsenoside Rh2 yield, low in production cost and capable of achieving large-scale production of the precious and rare ginsenoside Rh2.

The invention relates to the technical field of rubber production, aiming to provide an improved nitrile rubber production process, which comprises polymerization, degassing and condensation. Raw materials including acrylonitrile, butadiene, desalinated and deoxidized water, condensed water and molecular weight regulators are fed into a polymerization position, convergence is carried out in a header pipe at the polymerization position, the converged mixture is pre-emulsified sequentially through a pipe pump and a pipe mixer, heat exchange is carried out through an ammonia-cooling heat exchanger for cooling, the cooled mixture, initiator emulsion and activator solution are sequentially fed into a plurality of reactors for polymerization to produce latex, the latex taken out of the reactorsand terminating defoamer solution are fed into a maturing reactor and are fully mixed when the rate of polymerization and conversion reaches 70 plus or minus 5 percent, and the mixture is then fed into a degassing tower to be degassed and into a condensation reactor for condensation. The problem of blockage of the heat exchanger can be avoided, the process is simple, the production process is stable and economical, the Mooney of rubber can be controlled easily, and the produced nitrile rubber has high quality.

The invention relates to a method for preparing ortho-nitroaniline by kettle-type continuous operation, belonging to the organic chemical engineering field; pressure-resistant reaction kettles are sequentially connected in series, and high-order differences are formed among the reaction kettles, so as to lead the reaction material to overflow to the next-level reaction kettle; 0-nitrophenyl and ammonia water are added in a first-level reaction kettle in the pressure-resistant reaction kettle, and the mixture is reacted under the condition that the temperature in the kettle is 150 DEG C to 250 DEG C, and pressure is 3MPa to 10MPa, and then the reacted products are oil-water laminated; after water is cooled, the ortho-nitroaniline is dissolved out in a solid way and is press-filtered into filter cakes, namely, the ortho-nitroaniline is obtained. The method has simple flow, stable yield coefficient of products and less three wastes, and is easy to realize industrialization.

Methods of producing silicon carbide fibers. The method comprises reacting a continuous carbon fiber material and a silicon-containing gas in a reaction chamber at a temperature ranging from approximately 1500° C. to approximately 2000° C. A partial pressure of oxygen in the reaction chamber is maintained at less than approximately 1.01×10² Pascal to produce continuous alpha silicon carbide fibers. Continuous alpha silicon carbide fibers and articles formed from the continuous alpha silicon carbide fibers are also disclosed.

The invention relates to a rotary damper having a displacer device, said displacer device comprising a damper shaft (3) and displacer components (4, 5) engaging into one another, wherein a rotationalmovement of the damper shaft (3) can be damped. The displacer device contains a magnetorheological fluid as a working fluid. A magnetic field (10) of a magnetic field source having an electric coil (9) can be controlled by means of an associated control device. An end-side axial gap (25) is formed between the housing and the displacer device. An essential part of the magnetic field (10) of the magnetic field source passes through the axial gap (25) between the housing and the displacer components (4, 5). The magnetorheological fluid can be influenced by the magnetic field (10) in order to adjust a damping of the rotational movement of the damper shaft (3). The magnetic field (10) also causes a seal of the end-side axial gap (25).

The invention relates to a rocker of an internal-combustion engine air gate mechanism, which comprises two rocker bodies (1, 1') made from plank material composed of the beams (4, 4') connecting the lateral walls (2, 3); a cam lower rolling surface of the rocker end part (12) can be directly or indirectly passed to the air exchanging valve via another rocker end part (15); and the middle part (5) of the lateral walls (2, 3) has two holes (6, 7) which are mutually aligned for installing the rocker body (1) on the same shaft. In order to obtain the low cost and simple structure for the rocker and the reliable and sufficient rigidity, the shaft bearing of the rocker bodies (1, 1'), a hemi-shell shaft tiles (8, 8') aligned to the holes (6, 7) is combined with the beams (4, 4'). In addition, the beams (4, 4') are arranged with the enforced devices (10, 14) connected to the hemi-shell shaft tiles (8, 8').

The invention discloses an anti-sulfonamides antibody and application thereof. The single-chain antibody consists of a heavy chain variable region, a short peptide for connecting the heavy chain variable region and a light chain variable region, and the light chain variable region connected in turn; the amino acid sequence of the heavy chain variable region is shown as the first position to the 118th position amino acid residues from the N terminal in a sequence 1; and the amino acid sequence of the light chain variable region is shown as the 134th position to 248th position amino acid residues from the N terminal in the sequence 1. A kit and a colloid gold test paper card have the advantages of high sensitivity, high accuracy, high precision, low cost, simple operation, short detection time, suitability for various units, simple storage and long quality guarantee period, can quickly detect massive samples simultaneously and can realize on-site high-flux quick detection. Therefore, the antibody, the kit, the colloid gold test paper and the detection method have important effect of detecting sulfonamides.

The invention discloses a steroid ester preparation method. According to the preparation method, an alcoholic hydroxyl steroid compound (I) as a starting material generates an esterification reaction with an alkyl acid compound (II) by using a dehydrant after being subjected to the catalysis of a catalyst, so that a steroid ester (III) is obtained, and the process route is as shown in the specification, wherein the R1 in the alcoholic hydroxyl steroid compound (I) contains hydrogen, alkanes, ene-alkyne and ketone; the R2 in the alkyl acid compound (II) contains C2-C18 alkyl acids. By the combination of the novel dehydrant and the specific catalyst, the dehydrating problem in the esterification reaction can be solved, the reaction is moderate and complete, the operation is simple, the yield and the quality are enhanced greatly, and products have no dehydrant residue.

The invention provides a glucose oxidase screen-printed electrode for online detection and a preparation method thereof. According to the electrode, Prussian blue doped carbon-based screen-printed electrode prepared by a chemical deposition method is used as an electrochemical transduction device, and is modified by an immobilized glucose oxidase layer to form an enzyme biosensor. The electrode can be used for effectively avoiding interference caused by complex ingredients in a fermentation broth, and has the characteristics of recycling and good signal reproducibility, so that the requirement for conventional fermentation online analysis can be met. A chemically modified electrode is prepared by adopting a screen-printing process to improve the reproducibility, and can be used for batch production. Furthermore, the enzyme immobilization method used in the electrode is simple, and the aim of effectively limiting enzyme preparation loss can be achieved by using cellulose filter paper and glass cellulose filter paper and other simple materials. The glucose oxidase screen-printed electrode is applicable to modification of enzyme electrode batch production and has enough long enzyme activity life.

The present invention relates to a preparation method of clofarabine, comprising mixture of 2-adenine chlorine and the compound of formula I. the reaction is done under mild conditions and an appropriate temperature; the basically pure compound of the formula III can be prepared after separation. The high-purity clofarabine can be got through hydrolysis under alkaline conditions.

The invention discloses a preparation technology of a crack-free titanium hydride electrode source sheet. The technology includes: (a) using metal titanium as the raw material to manufacture an electrode source sheet workpiece, and conducting pretreatment on the surface; (b) subjecting the pretreated electrode source sheet workpiece obtained in step (a) to high temperature annealing under vacuum; (c) carrying out hydrogen absorption reaction on the annealed electrode source sheet workpiece; and (d) setting a cooling curve to make the hydrogen absorption reaction undergo for certain time, and cooling the workpiece subjected to hydrogen absorption to room temperature, thus obtaining the finished product electrode source sheet. The electrode source sheet produced by the invention has a surface smooth hydrogenated layer free of macrocrack, under the circumstance of strong magnetic pulse discharge, all parts of the hydrogenated layer receive the same external shock, and spray cracking does not happen and form, thus greatly enhancing the discharge stability of the product, and also significantly prolonging the electrode source sheet life.

The invention discloses an anti-ractopamine antibody and application thereof. The antibody consists of a heavy chain variable region, a short peptide for connecting the heavy chain variable region with a light chain variable region, and the light chain variable region connected in turn, wherein an amino acid sequence of the heavy chain variable region is shown as No.9-No.130 amino acid residues from an N terminal in a sequence 1; and an amino acid sequence of the light chain variable region is shown as No.146-No.250 amino acid residues from the N terminal in the sequence 1. A kit and a colloidal gold test paper card have the advantages of high sensitivity, high accuracy, high precision, low cost, simple operation, short detection time, suitability for various units, simple storage, long quality guarantee period, and can rapidly detect mass samples simultaneously and realize on-site high-throughput rapid detection. Therefore, the antibody, the kit, the colloidal gold test paper and the detection method have important significance for detecting ractopamine.

The invention provides medicine for curing non-alcoholic steatohepatitis and a preparation method thereof. The medicine is prepared from traditional Chinese medicine as raw materials, and the ingredients of the raw materials are mainly radix astragali, semen coicis, rhizoma alismatis, seaweed, dandelion, radix salviae miltiorrhizae, polygonum cuspidatum, hawthorn, radix bupleuri, folium nelumbinis and polygonum multiflorum. The medicine is prepared into a water-honeyed pill, namely a dampness-dispelling stasis-dispersing fat-fighting pill. The traditional Chinese medicine is selected according to three-method combination of clearing heat and dampness, activating blood and dissolving stasis, and soothing liver and strengthening spleen, and a prescription is formed according to a principle of dispelling dampness, removing stasis and strengthening spleen, so that the effects of removing fat, dropping enzyme and repairing damaged liver cells can be achieved. Animal acute toxicity tests and pharmacodynamic tests prove that the medicine has good safety, can obviously control blood fat and improve the fatty liver, and has an obvious effect of losing weight. The medicine is clinically applied, the basic cure rate is 57.5 percent, the total effective rate is 94.3 percent, and the curative effect is higher than that of national medicine 'simvastatin' approved by the state and the current medicine for curing the fatty liver in China.