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67results about How to "Reduce absorption rate" patented technology

Special MDEA formula solution activated by functional ion liquid for CO2 gas absorption separation

The invention relates to a special N-methyldiethanolamine formula solution activated by ion liquid for CO2 gas absorption separation, which consists of the following ingredients in mass percent: 35 to 50 percent of N-methyldiethanolamine, 5 to 20 percent of low-viscosity kalescent functional ion liquid, 15 to 30 percent of dimethyl ether of polyethlene glycol and/or sulfolane and 15 to 30 percent of water, wherein cations of the low-viscosity kalescent functional ion liquid are tetraalkylammonium ions, and anions of the low-viscosity kalescent functional ion liquid are amino acid radicals or organic carboxylate anions. The formula solution of the invention has the advantages that the high mass transfer performance of the absorption-desorption process is improved, the material consumption in the use process is low, the defect of high energy consumption because a large amount of water vapor is brought away during the absorbing agent regeneration, and the invention belongs to an energy-saving formula with high green degree. The regeneration temperature of the solution is lower than that of the traditional absorbing liquid, the grade of a heat source required to be provided in the regeneration process is reduced, energy sources can be saved, the stability of the absorbing agent solution in the operation is high, the consumption of each absorption-desorption circulation is low, and in addition, the cost is low.
Owner:NANJING UNIV

Clonidine hydrochloride sustained release tablets and preparation method thereof

The invention provides clonidine hydrochloride sustained release tablets. The clonidine hydrochloride sustained release tablets are prepared from 0.2 part of clonidine hydrochloride, 70-90 parts of sustained release skeleton material and 10-20 parts of lubricating agent by weight. A preparation method of the clonidine hydrochloride sustained release tablets comprises the steps of material preparing, blending, granulating, blending, tabletting and aluminium-plastic packaging. The clonidine hydrochloride sustained release tablets and the preparation method have the beneficial effects that the clonidine hydrochloride sustained release tablets have good stability and definite curative effects and can be used for effectively treating hypertension; the novel sustained release preparations are adopted; sustained release refers to reducing the medicine release rates of medicines from the dosage forms and reducing the absorption rates of the medicines into bodies, thus achieving more stable treatment effects; compared with oral liquids, the clonidine hydrochloride sustained release tablets have the advantages of good medicine stability, convenience in packaging, transportation and storage, and the like; the preparation method is simple and practicable and is suitable for industrial production.
Owner:HARBIN SHENGJI PHARMA

Composite material containing microelement for hard tissue repair and reconstruction and preparation method thereof

The invention relates to a composite material containing microelement for hard tissue repair and reconstruction and a preparation method thereof. The composite material further contains at least one of three microelements of strontium, zinc and copper acceptable in human body with the calcium mole ratio of 0.01-0.5% in ceramic component of calcium phosphate in the ceramic component containing the calcium phosphate and the substrate material of multi-amino acid polymer, wherein the mass ratio of the ceramic component of calcium phosphate is 30-65%, and the balance of multi-amino acid polymer polymerized by epsilon-aminocaproic acid and other amino acids. The process for preparing the calcium phosphate ceramic comprises the following steps of: adding microelement, then mixing the amino acid components evenly, removing water of various forms in the mixture at a temperature lower than or equal to 200 DEG C under the protection of inert gas, then composing in situ polymerization under the condition of 210-250 DEG C and pH of 6.5-7.5. The composite material is a bionic biomedical and tissue engineering material which has controllable degradation speed, good bioactivity and compatibility and overcomes deficiencies and problems of similar repair materials at present.
Owner:SICHUAN GUONA TECH

Fluvoxamine maleate sustained release tablets and preparation method thereof

The invention provides fluvoxamine maleate sustained release tablets. The fluvoxamine maleate sustained release tablets are prepared from 50 parts of fluvoxamine maleate, 50-150 parts of sustained release skeleton material and 5-25 parts of lubricating agent by weight. A preparation method of the fluvoxamine maleate sustained release tablets comprises the steps of material preparing, blending, granulating, blending, tabletting and aluminium-plastic packaging. The fluvoxamine maleate sustained release tablets and the preparation method have the beneficial effects that the fluvoxamine maleate sustained release tablets are used for treating depression and associated symptoms as well as symptoms of obsessive-compulsive disorder and have definite curative effects and small side effects; the novel sustained release preparations are adopted; sustained release refers to reducing the medicine release rates of medicines from the dosage forms and reducing the absorption rates of the medicines into bodies, thus achieving more stable treatment effects; compared with oral liquids, the fluvoxamine maleate sustained release tablets have the advantages of good medicine stability, convenience in packaging, transportation and storage, and the like; the preparation method is simple and practicable and is suitable for industrial production.
Owner:HARBIN SHENGJI PHARMA

Clonidine hydrochloride sustained release pellets

The invention provides clonidine hydrochloride sustained release pellets. The clonidine hydrochloride sustained release pellets comprise medicine-containing pellets and enteric coating layers, wherein the medicine-containing pellets are coated by the enteric coating layers; the medicine-containing pellets comprise 0.1mg of clonidine hydrochloride, 180mg of hollow pellet cores and 10mg of adhesive; the enteric coating layers comprise 45-225mg of Eudragit NE30D and 7-68mg of talcum powder. A preparation method of the clonidine hydrochloride sustained release pellets comprises the following processes: 1. material preparation; 2. pellet preparation; 3. preparation of an enteric coating agent; 4. coating; 5. filling; 6. aluminium-plastic packaging and preparation of finished products. The sustained release pellets with clonidine hydrochloride as an active ingredient are mainly used for treating hypertension and have the beneficial effects that as the two kinds of advanced technologies, namely novel sustained release preparations and pellet preparations, are adopted, the clonidine hydrochloride sustained release pellets have stable treatment effects and higher bioavailability and have the advantages of good medicine stability, convenience in packaging, transportation and storage, and the like. The preparation method is simple and practicable and is suitable for industrial production.
Owner:HARBIN SHENGJI PHARMA

Complete denture movable flap and assembling method thereof

InactiveCN107137154AAvoid comfortRecovery fretting rangeArtificial teethDental surgeryDenturesEngineering
The invention discloses a complete denture movable flap and an assembling method thereof. The complete denture movable flap comprises a cap crown portion, a buffer supporting portion and a base bracket portion. The buffer supporting portion is of a columnar structure, the bottom of which is connected to the base bracket and the upper portion of which is provided with a locking positioning end; the external structure of the cap crown portion is similar to the shape of a tooth; transverse through grooves are formed in the lower portion and the central position of the cap crown portion, and the shape of the groove is matched with that of a side face of the buffer supporting portion. The assembling method comprises the following steps: firstly, processing the cap crown portion, the buffer supporting portion and the base bracket portion through a mould; then sleeving the buffer supporting portion with the cap crown portion from the side face through a through groove; then locking or clamping the bottom of the buffer supporting portion on the base bracket; and finally, clamping or embedding the base bracket portion to a denture. The complete denture movable flap disclosed by the invention solves the problem of comfort of a patient with false teeth in chewing food and the problem of alleviating guided excessive absorption of residual alveolar bones by yawing forces of the false teeth and etc.
Owner:王朝阳

Power plant water intake open channel layout analysis method based on reduction of water intake entrainment effect

ActiveCN113901557AReduce the impact of water intake entrainmentReduce entrainmentGeometric CADConstraint-based CADNuclear plantMathematical model
The invention relates to a power plant water intake open channel layout analysis method based on reduction of a water intake entrainment effect. The method comprises the following steps: constructing a three-dimensional mathematical model of a water intake open channel of a nuclear power plant; analyzing internal and external flow fields of the water taking open channel; constructing a water taking open channel organism and sundry throwing simulation mathematical model; analyzing the water taking entrainment rate of organisms and sundries in the water taking open channel; and comprehensively analyzing the water taking entrainment rates of the water taking open channels with different structures. Aiming at a water taking open channel structure of a nuclear power plant, according to environmental characteristics such as water area flow velocity, flow direction, terrain and shoreline of a water taking project, flow field characteristics inside and outside the water taking open channel structure are fully utilized, the entrainment effect of water taking on organisms and sundries is analyzed, and the water taking safety is improved. According to the method, the internal and external flow field distribution characteristics and the water taking entrainment rate of the water taking open channel in the water taking engineering water area are provided, and a basis is provided for reducing the water taking entrainment influence of the open channel.
Owner:CHINA INST OF WATER RESOURCES & HYDROPOWER RES

Choline fenofibric acid sustained release pellets and preparation method thereof

The invention provides choline fenofibric acid sustained release pellets. The choline fenofibric acid sustained release pellets comprise medicine-containing pellets and coating layers, wherein the medicine-containing pellets are coated with the coating layers; the medicine-containing pellets comprise 45mg of choline fenofibric acid, 100-200mg of hollow cores, 100-200mg of filling agents, 25-125mg of lubricating agents and 5-50mg of bonding agents; the coating layers comprise 35-175mg of Eudragit NE30D and 5-52mg of talcum powder. A preparation method of the choline fenofibric acid sustained release pellets comprises the following processes: 1. material preparation; 2. mixing; 3. preparation of the bonding agents; 4. preparation of the pellets; 5. preparation of coating agents; 6. coating; 7. filling; 8. aluminium-plastic packaging and preparation of finished products. The choline fenofibric acid sustained release pellets used for reducing blood lipid have the beneficial effects that as the two kinds of advanced technologies, namely novel sustained release preparations and pellet preparations, are adopted, the choline fenofibric acid sustained release pellets have stable treatment effects and higher bioavailability and have the advantages of good medicine stability, convenience in packaging, transportation and storage, and the like. The preparation method of the choline fenofibric acid sustained release pellets is simple and practicable and is suitable for industrial production.
Owner:HARBIN SHENGJI PHARMA

Preparation method and application of biological medicinal bait for trionyx sinensis

The invention discloses a preparation method and application of biological medicinal bait for trionyx sinensis. The preparation method includes the steps of A, selecting a biological carrier A; B, weighting medicine B, using a formula to calculate the dosage of the weighed medicine, and using a solvent C to dissolve the medicine; C, adding phagostimulant D into the medicine solution, and using distilled water to dilute the mixed liquid; D, using a glass syringe to extract the medicine solution; E, injecting the medicine solution into the biological carrier A to obtain the biological medicinal bait. The invention further discloses application of the biological medicinal bait to the pharmacological study of the trionyx sinensis. The biological medicinal bait has the advantages that the biological medicinal bait is simple in preparation process and convenient to operate, the phagostimulant is added into the medicine solution to induce the trionyx sinensis to eat the biological medicinal bait, the special smell of the medicine can be masked, and the trionyx sinensis can easily accept the biological medicinal bait; the actual absorption state of the medicine in the intestinal track of the trionyx sinensis can be disclosed favorably; the biological medicinal bait is suitable for applying the medicine to the trionyx sinensis through the biological carrier, and the pharmacological effect of the medicine in the trionyx sinensis can be researched.
Owner:YANGTZE RIVER FISHERIES RES INST CHINESE ACAD OF FISHERY SCI

Magnesium valproate sustained release tablet and preparation process thereof

The invention relates to a magnesium valproate sustained release tablet and a preparation process thereof. The magnesium valproate sustained release tablet is prepared from the following two parts: A,a tablet core prepared from the following substances: 29 to 54 percent of magnesium valproate, 17 to 21 percent of hydroxypropyl methylcellulose, 2 to 9 percent of ethylcellulose, 22 to 30 percent ofethyl alcohol, 0.8 to 4 percent of magnesium stearate, and 3 to 7 percent of talcum powder; B, a sustained release tablet coating formula prepared from the following substances: 0.7 to 2 percent of ethylcellulose, 0.7 to 1.3 percent of glycerinum, 1.3 to 4 percent of hydroxypropyl methylcellulose, and 0.3 to 1.3 percent of talcum powder. The preparation process comprises: A, a preparation processof the tablet core, comprising the steps of weighing raw materials according to tablet core formula amounts uniformly mixing, adding an appropriate amount of the ethyl alcohol, preparing a soft material, sieving and pelletizing, then baking and drying at the temperature of 55 DEG C to 65 DEG C, adding the magnesium stearate and the talcum powder, uniformly mixing, measuring the content, and pressing to form an oval tablet; B, a preparation process of the coating comprising the steps of weighing ingredients according to sustained release tablet coating formula amounts, dissolving through an appropriate amount of 50 to 100 percent ethyl alcohol, and then spraying a coating on the tablet core.
Owner:湖南省湘中制药有限公司

ptsG gene knocked out recombination bacterial efficiently expressing human-like collagen protein, construction method thereof, and protein expression

The invention relates to ptsG gene knocked out recombination bacterial efficiently expressing human-like collagen protein, a construction method thereof, and protein expression. In the prior art, when escherichia coli is adopted to carry out fermentation production of human-like collagen protein, acetic acid accumulation can affect bacterial growth and protein expression, and a collagen protein yield can be reduced with the existing acetic acid byproduct reduction method. According to the present invention, escherichia coli BL21 with a preservation number of CGMCC No.0743 is adopted as starting bacterial, Red homologous recombination is adopted, and apramycin resistance gene is adopted to replace ptsG gene on the escherichia coli genome, and FLP incision enzyme expressed by plasmid pCP20 is adopted to eliminate the apramycin resistance gene to obtain the ptsG gene knocked out escherichia coli engineering bacterial CGMCC No.7331. According to the present invention, a gene engineering tool is adopted to transform an escherichia coli glucose absorption way so as to reduce acetic acid accumulation, improve human-like collagen accumulation, reduce glucose consumption by 9-28%, and improve human-like collagen protein yield by 20-30%.
Owner:NORTHWEST UNIV(CN)

Magnesium valproate sustained-release tablet and preparing method thereof

The invention discloses a magnesium valproate sustained-release tablet and a preparing method thereof. The magnesium valproate sustained-release tablet is prepared from magnesium valproate, hydroxypropyl methylcellulose and a lubricating agent through the process steps of material preparing, mixing, granulating, total mixing, tabletting, aluminum-plastic packaging and the like. The magnesium valproate sustained-release tablet mainly has the antiepileptic and anti-mania treatment effects. A novel sustained release preparation is adopted, according to the definition of sustained release, the absorption efficiency of a drug entering an organism is reduced by reducing the drug release speed of the drug in the dosage form, and therefore a more stable treatment effect is achieved; the effective blood concentration can be kept in a long time, the toxic and side effects of the drug can be reduced, and drug use safety is improved. The drug is convenient to use and particularly suitable for patients with chronic diseases and improves compliance of patients. The magnesium valproate sustained-release tablet has the advantages of being high in stability, convenient to package, transport and store and the like, and the preparing method is simple, easy to implement and suitable for industrial production.
Owner:HEILONGJIANG ZHICHENG MEDICAL TECH

High efficiency air filter

The invention discloses a high efficiency air filter which is in a box-shaped structure and is characterized in that an air inlet is formed on a front wall plate, a rear cover grid is provided with an exhaust hole and is internally provided with a filtering material, a buffer cavity is formed in an externally convex manner on the grid corresponding to the air inlet, and two sides of the top of the grid are symmetrically provided with transverse guide slots; the filtering material is fixedly connected with a sheet which is fixedly connected with one end of a brake arm, a free end of the brake arm stretches to the outer side of the rear cover grid through the guide slots, and the brake arm can slide inside the guide slots. The grid is provided with the convex buffer cavity which can shunt the incoming flow, and simultaneously, a structure for manually shaking the filtering material is arranged, so the residual dust in sponge can be shaken off by manual compression and vibration, a matching structure for a guide plate and a positioning guide slot can connect a rear cover with a front cover so as to reduce the deformation of the front cover and the rear cover during engagement thereof, and with the help of the manual structure, a cover of the filter can be easily opened without dust falling; and the high efficiency air filter is simple in structure and convenient in operation, and enhances user satisfaction.
Owner:LG ELECTRONICS (TIANJIN) APPLIANCES CO LTD

Alfuzosin hydrochloride sustained release tablets and preparation method thereof

The invention discloses alfuzosin hydrochloride sustained release tablets and a preparation method thereof. The sustained release tablets are prepared by adopting the following raw materials: alfuzosin hydrochloride, hydroxypropyl methylcellulose and lubricating agents, and adopting the processing steps of material preparation, mixing, granulation, total blending, tabletting, aluminium-plastic packaging, and the like. The alfuzosin hydrochloride sustained release tablets have the beneficial effects that the alfuzosin hydrochloride sustained release tablets are mainly used for treating functional symptoms of benign prostatic hyperplasia; the more novel sustained release preparation is adopted; sustained release refers to that the rate of absorption of the medicines into bodies is reduced by reducing the rate of release of the medicines from the dosage form, thus achieving the more stable treatment effects; the effective blood concentration can be maintained in a longer time, the toxic and side effects of the medicines can be also reduced and the medicine safety is improved; the alfuzosin hydrochloride sustained release tablets are convenient to use, are especially suitable for chronic disease patients who take medicines for a long term, and have the effect of improving the compliance of the patients; alfuzosin hydrochloride sustained release tablets have the advantages of good medicine stability, convenience in packaging, transportation and storage, and the like; and the preparation method is simple and practicable and is suitable for industrial production.
Owner:HEILONGJIANG ZHICHENG MEDICAL TECH

Doxofylline sustained-release pellets and preparation method thereof

The invention provides doxofylline sustained-release pellets. The doxofylline sustained-release pellets comprise medicine-containing pellets and coating layers, wherein the medicine-containing pellets are coated by the coating layers; the medicine-containing pellets comprise 200 mg of doxofylline, 70 mg of hollow pellet cores, 110-160 mg of a filling agent, 18-68 mg of a lubricating agent and 2-10 mg of an adhesive; the coating layers comprise 45-225 mg of Eudragit NE30D and 7-68 mg of talcum powder. A preparation method of the doxofylline sustained-release pellets comprises the following processes: 1, material preparation; 2, mixing; 3, preparation of the adhesive; 4, preparation of the pellets; 5, preparation of a coating agent; 6, coating; 7, filling; and 8, aluminum-plastic packaging and preparation of finished products. The doxofylline sustained-release pellets which can effectively treat bronchial asthma, asthmatic chronic bronchitis and dyspnea and other symptoms caused by bronchospasm is provided; as two kinds of advanced technologies, namely novel sustained-release preparations and pellet preparations, are adopted, the doxofylline sustained-release pellets have stable treatment effects and higher bioavailability and have the advantages of good medicine stability, convenience in packaging, transportation and storage and the like; the preparation method is simple and practicable and is suitable for industrial production.
Owner:HARBIN SHENGJI PHARMA

Tamsulosin hydrochloride sustained-release pellet and preparation method thereof

The invention relates to a tamsulosin hydrochloride sustained-release pellet. The tamsulosin hydrochloride sustained-release pellet comprises a medicine-containing pellet body and a coating layer, wherein the coating layer wraps the medicine-containing pellet body, the medicine-containing pellet body comprises tamsulosin hydrochloride, a blank pellet core, a filling agent, a lubricating agent and an adhering agent, and the coating layer comprises Eudragit NE30D and talcum powder. A preparation method comprises the following steps: 1, preparing materials; 2, mixing; 3, preparing the adhering agent; 4, pelleting; 5 preparing a coating agent; 6, coating; 7, filling; and 8, packaging by aluminum-plastic for obtaining a finished product. The tamsulosin hydrochloride sustained-release pellet is suitable for the symptoms such as urination disorder caused by benign prostatic hyperplasia, and is good in drug release stability, small in irritation to the gastrointestinal tract, good in bioavailability, convenient to package, transport and store, and suitable for industrial production. The tamsulosin hydrochloride sustained-release pellet is good in absorption after oral medication, and although the tamsulosin hydrochloride sustained-release pellet can be taken on an empty stomach or after the meal, food can increase the total absorptive amount of the tamsulosin hydrochloride sustained-release pellet.
Owner:HEILONGJIANG ZHICHENG MEDICAL TECH
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