49results about How to "The preparation operation process is simple" patented technology

The invention discloses an application for isobenzofuran type compounds in marine biofouling prevention and a preparation method thereof, which belongs to the field of marine fouling organism repellency and mainly solves the problem of marine biofouling. The application for isobenzofuran type compounds in marine biofouling prevention can be used for preventing underwater structure surfaces from being attached and / or fouled by marine organisms. The sobenzofuran type compounds are all obtained from isolation of fungus which is named cephalosporium cordaAL 031 in the strain classification, and the preservation serial number of the fungus strain is CCTCC Number M2010140. Extracts of secondary metabolites of the fungus and two isobenzofuran type compounds are performed a fouling resistance activity screening, the experiment result indicates that the extracts of secondary metabolites of the fungus and two isobenzofuran compounds show high fouling resistance activity, attachment of marine fouling organisms can be inhibited, and the application for isobenzofuran type compounds in marine biofouling prevention and the preparation method thereof can be used for prevention and treatment of marine biofouling and have a good application perspective.

The invention discloses a xanthone compound (I) and a preparation method and application thereof. The xanthone compound is separated from swertia atroviolacea, has the molecular formula of C17H16O5 and is named as 6-(2-hydroxymethyl)-1,7-dimethoxy-3-methyl-xanthone which is of the structural formula shown (I) in the description. The preparation method of the xanthone compound comprises the steps that swertia atroviolacea is used as a raw material, extraction, silica-gel column chromatography and high pressure liquid phase chromatography separation are carried out, and the xanthone compound is obtained. Through activity tests, the xanthone compound has good bacteriostasis. The compound is novel in structure, has good bacteriostasis, and can be used as a lead compound for preparing antibacterial drugs. The compound is used for cigarette tipping paper, and the possibility of bacteria growth and reproduction in the cigarette tipping paper can be eliminated or lowered.

The invention discloses an alkaloid compound. The alkaloid compound is chemically named as 8-hydroxy-3-hydroxymethyl-6,9-dimethyl-7H-benzo[de]isoquinoline-7-one and has a chemical formula C15H13NO3 and the structure shown in the specification. The invention further discloses a method for preparing the alkaloid compound from tobaccos. The invention further discloses use of the alkaloid compound. Activity tests prove that the alkaloid compound has a relatively good bacteriostatic action. The alkaloid compound is of a novel structure and has relatively good antibacterial activity. By applying the alkaloid compound to tipping paper of cigarettes, the possibilities of breeding and reproduction of bacteria in the tipping paper of the cigarettes can be eliminated or reduced.

The invention provides a device and a synthesis method for one-step synthesis of layered hydroxide using solid waste. The device includes a material acidolysis chamber, an ion precipitation chamber and an ion filter chamber. The material acidolysis chamber mainly includes a chemical reaction box, a magnetic stirring controller, a liquid drain hole and an acid injection hole; the ion precipitation chamber mainly includes a solution mixing box, an overflow hole, a liquid addition hole, an air inlet hole and a top cover , the ion precipitation chamber and the material acidolysis chamber are connected by channel-tenon assembly and bolt pre-tightening; the ion filtration chamber mainly includes a liquid inlet bin, a filtrate bin, a circulation bin, a sealing cover and a vacuum filtration device, and the filtrate bin is arranged The discharge pipe controls the liquid inlet valve by floating, so that the filtrate automatically enters the circulation chamber from the filtrate bin, and finally returns to the solution mixing box. The device and the synthesis method of the invention can simplify the operation process of using solid waste as raw material to prepare layered hydroxide, reduce the preparation cost of layered hydroxide, improve the preparation efficiency, and realize one-step synthesis of solid waste layered hydroxide.

The invention discloses the application of a soil extractant in treating lead-contaminated soil. The soil extractant is composed of biomass charcoal and magnetic powder. Among them, biochar and magnetic powder (with Fe 3 o 4 ) has a mass ratio of (1.5‑2.5):1. When the dosing mass of the soil extractant in the soil is 5%, the lead pollution concentration is reduced by 30.8-41.9% after the soil extractant treats the lead-contaminated soil for 7 days. In the above technical solution, when the weight of the soil extractant added to the soil is 5%, after the soil extractant treats lead-contaminated soil for 30 days, the concentration of lead pollution is reduced by 26.8-40.1%.

The invention discloses a composite photocatalyst and a preparation method thereof. The composite photocatalyst is a bismuth molybdate and cadmium sulfide composite photocatalyst and enables water to produce hydrogen continuously under irradiation of visible light of sunlight. The prepared bismuth molybdate and cadmium sulfide composite photocatalyst has a large-area contact interface and facilitates carrier separation, bismuth molybdate and cadmium sulfide are stable in structure and are in band gap matching, so that photocatalytic activity is improved, catalytic effect is stable, and excellent properties of photocatalytically splitting water into hydrogen, photodegrading organic pollutants and reducing heavy metal ions and carbon dioxide are obtained; the raw materials for the synthetic method are common, the preparation operating process is simple, technological parameters are easy to realize, the cost is low, the operation is simple, the yield is high, the service life cycle is long, and the composite photocatalyst and the preparation method thereof have broad application prospect and industrial prospect in the fields of photocatalytic splitting of water into hydrogen, photodegradation of organic pollutants, reduction of heavy metal ions and carbon dioxide and the like.

The invention discloses diterpenoid compounds, and a preparation method and application thereof. The diterpenoid compounds are prepared by the following steps: by using Aralia melanocarpa root as a raw material, carrying out extract leaching, organic solvent extraction, silica gel column chromatography and high pressure liquid chromatography separation. The molecular formula of the compounds is C20H28O2 which is named ent-pimar-6,8(14),15-trien-19-oic acid disclosed as the structural formula in the specification. The preparation method comprises the following steps: by using the Aralia melanocarpa root as the raw material, carrying out extract leaching, organic solvent extraction, silica gel column chromatography and high pressure liquid chromatography separation. The invention also discloses application of the diterpenoid compounds in preparing drugs for preventing and / or treating tumor and in preparing drugs for preventing and / or treating human lung adenocarcinoma, human prostatic cancer or human acute medullary system leukaemia. The diterpenoid compounds have obvious inhibiting actions when being applied to drugs for human lung adenocarcinoma, human prostatic cancer or human acute medullary system leukaemia, which indicates that the diterpenoid compounds have favorable anticancer activity and can be used as an anticancer active component or lead compound.

The present invention relates to containers, devices, kits and methods for preparing injectable adipose tissue from aspirated adipose material. In particular, a washing and separation vessel for preparing adipose tissue has a washing chamber for washing aspirated fatty material, the vessel having an inlet and an outlet for passing the fatty material through the inlet into the washing chamber and allowing the material to enter the washing chamber The fluid component exits the chamber through the outlet, and the washing chamber includes at least one agitation assembly for mechanically forming an emulsion of the fluid component, each agitation assembly comprising an elastic member and an elastic member fixed to the at least one sphere on it. The method comprises a washing step, an emulsifying step and an emulsion removing step, during which the washing and separating vessel is always in a vertical state with the outlet facing downwards. Compared to the existing process, the preparation process is relatively simple, which can save time, reduce the complexity of the device and reduce the possibility of contamination.