Abstract: Disclosed in the present invention are a novel flat heat absorber for solar tower power generation and a system using same. The system comprises a windshield, a flat heat absorber, and a circulation pipeline, wherein the flat heat absorber is a main element for photothermal conversion and heat energy transfer, the windshield prevents heat loss of the heat absorber, and the circulation pipeline ensures the circulation of a working fluid. In a working process, a heat transfer fluid in the flat heat absorber absorbs heat and evaporates from an evaporation surface, releases heat and condenses on a condensation surface, the condensed heat transfer fluid flows back to the evaporation surface to enter circulation work of a next round, and heat is transferred to the working fluid by means of a gas-liquid phase change process.

Abstract: A treatment process of cyclosporine eye gel, comprising the steps of: adding carbomer to water, stirring thoroughly and homogenizing; after the prepared carbomer base swollen, stirring and homogenizing; cooling the carbomer base after moist heat sterilization, performing vacuum degassing, adjusting the pH of the base to 5.0-9.0 with filtered sodium hydroxide solution; mixing polyoxyl 35 castor oil, cyclosporin A raw material, 1,2-propanediol and water in a suitable ratio, preparing into a clear solution under a water bath at 35 to 45° C., and filtering; mixing the filtrate uniformly with the carbomer base, performing vacuum degassing; performing aseptic filling after another filtration. For the process of the present invention, sterilization and filtration is performed before adding carbomer, which is convenient for industrial production.

Abstract: A dispersion process of adapalene gel preparation, including the following steps: pulverizing adapalene raw material to D50 not more than 10 ?m and D90 not more than 30 ?m by dry detection; adding methyl p-hydroxybenzoate, 1,2-propanediol, carbomer 980 and disodium edetate in water, heating and stirring consistently to obtain a matrix in a uniform jelly; adding poloxamer 188, propylene glycol and ethylene glycol phenyl ether in water, stirring and heating to prepare a mixed solution; adding adapalene in the mixed solution prepared, emulsifying at a high speed, then adding to the matrix for thorough stirring; and then adding a triethanolamine aqueous solution for homogenization and stirring. The preparation prepared has good emulsifying and dispersing effect of adapalene, can be expanded on a large scale, and the industrial promotion prospect is good.

Abstract: A dispersion process of adapalene gel preparation, including the following steps: pulverizing adapalene raw material to D50 not more than 10 ?m and D90 not more than 30 ?m by dry detection; adding methyl p-hydroxybenzoate, 1,2-propanediol, carbomer 980 and disodium edetate in water, heating and stirring consistently to obtain a matrix in a uniform jelly; adding poloxamer 188, propylene glycol and ethylene glycol phenyl ether in water, stirring and heating to prepare a mixed solution; adding adapalene in the mixed solution prepared, emulsifying at a high speed, then adding to the matrix for thorough stirring; and then adding a triethanolamine aqueous solution for homogenization and stirring. The preparation prepared has good emulsifying and dispersing effect of adapalene, can be expanded on a large scale, and the industrial promotion prospect is good.

Abstract: A treatment process of cyclosporine eye gel, comprising the steps of: adding carbomer to water, stirring thoroughly and homogenizing; after the prepared carbomer base swollen, stirring and homogenizing; cooling the carbomer base after moist heat sterilization, performing vacuum degassing, adjusting the pH of the base to 5.0-9.0 with filtered sodium hydroxide solution; mixing polyoxyl 35 castor oil, cyclosporin A raw material, 1,2-propanediol and water in a suitable ratio, preparing into a clear solution under a water bath at 35 to 45° C., and filtering; mixing the filtrate uniformly with the carbomer base, performing vacuum degassing; performing aseptic filling after another filtration. For the process of the present invention, sterilization and filtration is performed before adding carbomer, which is convenient for industrial production.

Abstract: A method of controlling the impurities in a cyclosporin A eye gel. A high performance liquid chromatography is performed, and chromatographic conditions are as follows: the detection wavelength is 210-230 nm; the column temperature is 60-68° C.; the flow rate is 0.8-1 ml/min; and the mobile phase A is: THF-water-phosphoric acid. The method of controlling impurities solves the problem of excipients interference and separation of many impurities at the same time, it also provides an effective method for the formulation of quality standard of impurities in this kind of preparation.

Abstract: A controller is provided for a gas valve including a movable valve element, a main diaphragm chamber having a main diaphragm therein coupled to the valve element to displace the valve element relative to a valve opening, and a servo-regulator diaphragm for regulating flow of gas that acts against the main diaphragm, to adjust the valve element and vary the flow rate. A stepper motor is configured to move in a stepwise manner to displace the servo-regulator diaphragm to adjust the valve element and gas flow rate. The controller for the stepper motor includes a microprocessor that receives an input signal indicating an operating capacity level, and determines the steps the stepper motor must move to displace the servo-regulator diaphragm to establish a flow rate corresponding to the operating capacity level. The microprocessor generates a signal to move the stepper motor the number of steps to adjust the gas valve.

Abstract: The present invention relates to the medical field, discloses a compound preparation of lercanidipine hydrochloride and atorvastatin calcium, which has a drug content per unit dosage of 5-20 mg of lercanidipine hydrochloride and 10-80 mg of atorvastatin calcium. The present invention also particularly provides a compound preparation in the form of tablets, which comprises lercanidipine hydrochloride and atorvastatin calcium as main drugs, and calcium carbonate, microcrystalline cellulose, sodium carboxymethyl cellulose, hydroxypropyl cellulose, polysorbate 80, magnesium stearate, pregelatinized starch and colloidal silicon dioxide as auxiliary materials, and opadry as a coating.

Abstract: A lercanidipine hydrochloride and losartan potassium compound preparation. In terms of mass percentage, said compound preparation contains 0.5-40% lercanidipine hydrochloride and 6.25-50% losartan potassium. Also provided is a compound preparation which utilizes lercanidipine hydrochloride and losartan potassium as the main ingredient, lactose monohydrate, microcrystalline cellulose, A-type sodium starch glycolate, povidone K30, magnesium stearate, pregelatinized starch and colloidal silicon dioxide as excipients, and opadry white as a coating in the preparation of a tablet. Clinical tests show that compared with single-component preparations, said compound preparation markedly increases the effectiveness of treatment of light and moderate hypertension, markedly reduces the incidence of adverse effects, is tolerated well by patients, and has excellent clinical application prospects.

Abstract: A controller is provided for a gas valve including a movable valve element, a main diaphragm chamber having a main diaphragm therein coupled to the valve element to displace the valve element relative to a valve opening, and a servo-regulator diaphragm for regulating flow of gas that acts against the main diaphragm, to adjust the valve element and vary the flow rate. A stepper motor is configured to move in a stepwise manner to displace the servo-regulator diaphragm to adjust the valve element and gas flow rate. The controller for the stepper motor includes a microprocessor that receives an input signal indicating an operating capacity level, and determines the steps the stepper motor must move to displace the servo-regulator diaphragm to establish a flow rate corresponding to the operating capacity level. The microprocessor generates a signal to move the stepper motor the number of steps to adjust the gas valve.