31results about How to "Facilitate reuse" patented technology

The invention provides a new microbial strain of vintage yeast CGMCC No.2266 and the application thereof in preparing (S)-(-)-beta-hydroxyphenyl ethyl propionate by microbial transformation. The vintage yeast CGMCC No.2266 is preserved in the China center of General Microbial Culture Collection, and the storage number is CGMCC No.2266, the storage date is 26 November 2007. The invention provides a new bacterial strain for biologically transforming beta-hydroxyphenyl ethyl propionate into (S)-(-)-beta-hydroxyphenyl ethyl propionate. The excess value of the (S)-(-)-beta-hydroxyphenyl ethyl propionate which is produced by the method of the invention on the enantiomer is more than 99.0 percent, the Mol transformation rate of the base material can reach 92.2 percent, the purity of the product can reach 99.8 percent, the Extraction yield of silica gel column chromatography product is 95.6 percent, and the fixed cell particles can be recycled for ten times.

The invention discloses a preparation method of a graphene oxide and cellulose composite aerogel. The preparation method comprises the following steps: (1) dispersing graphene oxide in water to prepare a graphene oxide dispersion, adding a reducing agent and cellulose into the graphene oxide dispersion, performing mixing, and ultrasonically dispersing the obtained mixture to obtain an ultrasonic dispersion; (2) adding a foaming agent solution to the ultrasonic dispersion prepared in step (1), and stirring and foaming the obtained solution to obtain a foamed mixed solution; and (3) carrying outa reduction reaction on the foamed mixed solution prepared in step (2), cooling the obtained reaction product to room temperature, and washing, freeze-thawing and drying the reaction product to prepare the graphene oxide and cellulose composite aerogel. The graphene oxide and fiber composite aerogel prepared by the method has a high adsorption capacity. The invention also discloses the graphene oxide and cellulose composite aerogel prepared by the method, and an application thereof in the treatment of organic dye contaminants in sewage.

The invention discloses a method for casting large-sized steel ingot with an internally arranged cold core and a top arranged electromagnetic field. The method for casting the large-sized steel ingot with the internally arranged cold core and the top arranged electromagnetic field can cast the large-sized steel ingot which is high in yield and few in central defects. The method for casting large-sized steel ingot with the internally arranged cold core and the top arranged electromagnetic field comprises steps of preparing the cold core; preheating the cold core; arranging the cold internally; discharging air; filling the steel ingot; arranging the electromagnetic field at the top and demolding and cooling. According to the method for casting the large-sized steel ingot with the internally arranged cold core and the top arranged electromagnetic field, the steel ingot central defects such as thick crystal structures, center segregation and loosening can be effectively controlled; the top arranged electromagnetic field can heat and stir cap opening steel liquid to effectively reduce the steel ingot cap capacity ratio and the press working head cutting rate, promote steel ingot solidification feeding and dispersed element segregation, reduce steel ingot thermal machining procedures and improve the ultrasonic flaw detection yield of products. The method for casting the large-sized steel ingot with the internally arranged cold core and the top arranged electromagnetic field is applicable to casting of solid steel ingot and solid composite steel ingot in different types and sizes and made of different materials.

The invention discloses a method for preparing a composite plate by recycling bag type dust remover waste filter bags; the waste filter bags are successively subjected to crushing, cleaning, drying, shredding, mixing of glass fibers and the crushed opened material, acupuncture composite, high-temperature pressing, cooling and design finalizing, and finished product composite plate obtaining. Compared with the prior art, produced building templates and wall partition plates have no high requirements on a cleaning process and can be covered with cement and the like on the outside during the using process, so that no requirement exists for building remaining cement or lime compositions; with recycling of the waste filter bag resources, secondary pollution caused by landfilling, incineration and other processing methods is effectively solved, so as to contribute to resource re-utilization, energy saving, emission reduction and other works; in the high-temperature pressurization process, thermoplastic fibers are dissolved to play a bonding effect, so that a glue and other binders are replaced, and produced boards do not contain formaldehyde, the glue and other harmful substances and belong to green environmental-protection building materials.

The invention discloses a powder curing agent for expanded perlite thermal insulation plates, and a preparation method thereof, wherein the powder curing agent comprises the following raw materials byweight: 50-60 parts of power generation chimney ash, 3-8 parts of industrial aluminum sulfate, 5-10 parts of active silica, 25-35 parts of cement clinker powder, 8-12 parts of fluorite powder, and 0.5-1 part of a retarder. According to the present invention, the powder curing agent is prepared from the power generation chimney ash, the industrial aluminum sulfate, the active silica, the cement clinker powder, the fluorite powder and the retarder so as to achieve the reutilization of the industrial and mining waste materials; and the prepared powder curing agent has the rapid setting propertyof gypsum and the high strength of cement, has low-alkalinity so as to significantly reduce the alkali accumulation and peeling phenomena of the thermal insulation plate, further can eliminate radioactive materials, and can flexibly control the molding time during the molding.

The invention discloses a method for conversing microbe to prepare ethyl (S)-3-hydroxy-3-(2-thienyl)-propanoate. The method includes the following steps that: 3-carbonyl-3-(2-thienyl)-propionic acid ethyl ester is regarded as substrate; immobilized cell particles prepared by fermentation liquor which is obtained from fermenting a wine yeast strain CGMCC No. 2266 are used as a biocatalyst; a biological transformation system is formed by a dibutyl phthalate solvent; a conversion reaction is performed for 8-72 hours at a temperature of from 20 DEG C to 40 DEG C; a conversion fluid is isolated and purified to obtain the ethyl (S)-3-hydroxy-3-(2-thienyl)-propanoate. In the invention, with mild reaction condition and friendly environment, the products possess high optical purity and conversion rate of the substrate is high. Processes of isolation and purification are simple. The catalyst is reusable. Therefore, industrial production can be achieved by using the method.

The invention provides a preparation method of (S)-(+)-ethyl mandelate by using biocatalytic ethyl benzoylformate and taking saccharomyces cerevisiae with CGMCC No.2266 as a biocatalyst. The method comprises the following steps of: performing a conversion reaction for 8 to 120 hours at a temperature of between 20 and 35 DEG C in a water and n-hexane two-phase system by using ethyl benzoylformate as a substrate and the saccharomyces cerevisiae with CGMCC No.2266 as a biocatalyst; and separating and purifying the conversion solution to obtain (S)-(+)-ethyl mandelate. The microbial conversion method has the advantages of mild reaction condition, friendly environment, high product optical purity, high substrate conversion rate, simple separation and purification process and recyclable catalyst, and is suitable for industrial production.

The invention relates to a scaling prevention and removal device for mine gas drainage equipment in the technical field of the mine gas drainage equipment. The device includes a processing box. The processing box, an air inlet pipe and an air outlet pipe are provided with flanges; the flanges are equipped with first bolts; mounting holes are installed on the processing box; cover caps are disposedon the processing box; the processing box is provided with inclined plates; a first filter plate, a second filter plate and a waterproof and breathable membrane are disposed between the inclined plates; the processing box is equipped with a cleaning structure; the processing box is provided with hoppers on the first filter plate, the second filter plate and the waterproof and breathable membrane;the hoppers are equipped with material unloading sleeve pipes, the material unloading sleeve pipes are provided with horizontal holes, and the material unloading sleeve pipes are provided with baffleplates; fixation structures are disposed on the baffle plates; the material unloading sleeve pipe on the right end is provided with a flow guiding pipe, and the flow guiding pipe is connected with asedimentation tank; the sedimentation tank is provided with an overflow pipe; the sedimentation tank is provided with a cover plate; a mounting frame and a drug adding pipe are disposed on the cover plate; a drive motor is installed in the mounting frame; the drive motor is provided with a rotation shaft; and the rotation shaft is provided with cross bars, and L-shaped scrapping plates are disposed on the cross bars. A drainage system of the device can operate normally, internal space of the equipment is guaranteed, discharge resistance is reduced, internal friction is reduced, and the efficiency of drainage equipment is improved.

The invention discloses a method for preparing (S)-3-hydroxyl-3-(2-thienyl)-propionitrile by microbial transformation, which comprises the following steps of: forming a biological transformation system with 3-hydroxyl-3-(2-thienyl)-propionitrile as a substrate, with an immobilized cell granule prepared from an enzyme-containing bacteroid cell obtained by fermenting a saccharomyces cerevisiae strain with the preservation number of CGMCC (China General Microbiological Culture Collection) No.2266 as a biocatalyst, and with phthalandione as a solvent; carrying out conversion reaction at 20-40 DEG C for 8-72h; and separating and purifying a transformation liquid to obtain a product, i.e., the (S)-3-hydroxyl-3-(2-thienyl)-propionitrile. The (S)-3-hydroxyl-3-(2-thienyl)-propionitrile is prepared by adopting a microbial transformation method which has the advantages of mild reaction condition and environmental friendliness; microorganisms are easy to culture on a large scale and low in cost; the produced strains are safe and toxicity-free; the product is easy to extract; the transform amount of the substrate and the production efficiency are higher; and the method is easy to realize the large-scale industrial production.

The invention discloses a floor-type agricultural and forestry insecticide that is convenient to fix, comprising a base, a fixing device, a support rod and a placement frame; through holes are opened at the four corners of the base; the fixing device includes a pressing rod and a fixing bolt, One end of the pressure rod is hinged to the base, and a chute is provided on the pressure rod, and the fixed bolt runs through the through hole and can move up and down. The upper end of the fixed bolt is movably connected with a slider matching the chute, and the slider is slidably matched with the chute; The bottom of the support rod is connected to the center of the base, the lower end of the support rod is provided with an insect trap light, and the periphery of the insect trap lamp is provided with a power grid, and the power grid is fixed on the base; the placement frame is installed on the top of the support rod, placed A plurality of flying insect traps are arranged in the frame. The present invention can fix the whole device conveniently, and simultaneously, it can kill crawling pests and flying pests.

The invention discloses an invisible semiconductor device and a preparation method and application thereof. The preparation method comprises the steps of sequentially forming a sacrificial layer, an epitaxial layer and a nano-pillar array on an epitaxial substrate, wherein the epitaxial layer and the nano-pillar array both contain III-V group semiconductor materials; arranging an insulating material layer which at least covers the nano-pillar array, and processing at least one window on the insulating material layer so as to enable at least part of the nano-pillar array to be exposed from the window; and arranging a first electrode at the window of the insulating material layer, and enabling the first electrode to be electrically connected with the nano-pillar array exposed out of the window, wherein the first electrode is a transparent electrode, a second electrode is arranged on the area, which is except the window, of the insulating material layer, and then the invisible semiconductor device is formed. The invisible semiconductor device provided by the invention is long in service life, and the invisible semiconductor device is provided with the vertical nanorod array, thereby facilitating the release of epitaxial stress and improving the crystal quality.

The invention relates to a method for integrating Web pages as service for registration and monitoring. The method is characterized by comprising the following steps: S1 registering the Web pages which need to be integrated as the service in a service registry; S2 generating a proxy address of the page integration service, and dynamically writing into a configuration file of agent software, so as to realize the support to page forwarding; S3 performing timing analysis on access logs of the agent software in the background, so as to obtain access records of the Web page integrated service; S4 displaying access conditions of the page integrated service through a service monitoring center. The method has the beneficial effect that united registration, management and monitoring are performed on Web page integration in a service form, and the method is favorable for reuse and united supervision of the Web page integration and even for promoting an enterprise to realize service-oriented IT architecture.

The invention discloses a method for improving the extraction rate of volatile oil of rhizoma acori graminei by re-extraction. The method comprises inspecting the time until the constant initial extraction volume of volatile oil of rhizoma acori graminei by a steam distillation method, determining conditions of the re-extraction through determining the re-extraction interval time and the volume constant time, and verifying the extraction rates and extract ingredients of the initial extraction and re-extraction to determine the optimal re-extraction process conditions. Through the steam distillation re-extraction method, the extraction rate of volatile oil of rhizoma acori graminei is improved, the use rate of the rhizoma acori graminei is increased, recycling of traditional Chinese medicines, high efficiency and energy saving are promoted, and the use range of the volatile oil of traditional Chinese medicines in traditional Chinese medicine preparations, foods and cosmetics is widened.The extract volatile oil of rhizoma acori graminei has small damage to the components, has a high purification rate and has a good practical value.

The invention relates to the field of artificial intelligence, and discloses a fluorine-containing wastewater treatment method, device and equipment and a storage medium. An efficient method for treating the fluorine-containing wastewater is realized. The method comprises the steps of according to a preset agent feeding amount, carrying out fluorine removal and precipitation treatment on the fluorine-containing wastewater through the wastewater treatment device, and discharging the fluorine-containing wastewater containing sludge after fluorine removal and precipitation into a reflux device; monitoring the fluorine-containing concentration of the fluorine-containing wastewater in the reflux device, and judging whether the fluorine-containing wastewater in the reflux device meets a preset discharge condition or not; if not, setting the sludge reflux quantity corresponding to the fluorine-containing wastewater in the reflux device and the new agent feeding amount through the intelligent control device; and returning the sludge corresponding to the sludge reflux quantity in the reflux device and the fluorine-containing wastewater to the wastewater treatment device, and carrying out the next round of defluorination precipitation treatment on the returned fluorine-containing wastewater through the wastewater treatment device according to the new agent feeding amount.