40results about How to "Little impact on yield" patented technology

A process for preparing the clean diesel oil by hydromodifying, isomerizing and lowering pour point features that the fractional oil raw material and H2 pass through a catalyst bed to obtain clean high-quality diesel and the naphtha product with low contents of sulfur and nitrogen and high content of arylhydrocarbon. Said catalyst bed contains hydrocatalyst bed containing beta zeolite (0.5-20 wt.%).

This invention discloses a method for producing high-quality diesel oil from whole fraction oil of coking. The method comprises: separating whole fraction of coking into light fraction oil of coking (containing part of light diesel oil fraction) and heavy fraction oil of coking (containing heavy diesel oil fraction), hydrogenation-modifying heavy fraction oil of coking in the presence of beta-zeolite-containing hydrogenation catalyst, mixing the modification product with light fraction oil of coking, and hydrogenation-refining. The method can obtain high-quality clean diesel oil and high-quality naphtha, and has such advantages as simple process and low energy consumption.

The invention discloses a rice diseases and pests monitoring system. The system comprises a target image acquisition module, the target image acquisition module is used for acquiring images of to-be-monitored rice through an unmanned aerial vehicle module and sending the acquired image data to a remote control terminal in real time through a wireless communication module; the remote control terminal is internally provided with a diseases and pests identification module, and the diseases and pests identification module is used for respectively performing image denoising and image enhancement preprocessing through bilateral filtering and segmental linear transformation algorithm, performing image binarization processing through an iterative adaptive threshold segmentation method, then identifying holes, spots and pests trails on leaves and rootstocks of the rice based on length-width ratio of a connected component circumscribed rectangle, and consequently completing identification of diseases and pests based on a diseases and pests database according to an identification result. The rice diseases and pests monitoring system provided by the invention realizes real-time acquisition ofrice images, the system has a diseases and pests identification and analysis function, and consequently, real-time monitoring for the rice diseases and pests in each area is realized, and the system has high monitoring accuracy and good effect.

The invention belongs to the field of medicament synthesis, and particularly relates to a method for preparing tartrate. The method comprises the following steps of: dissolving an (RS)-4-[4-dimethylamino-1-(4-fluorophenyl)-1-hydroxybutyl]-3-(hydroxymethyl) benzonitrile (I) oily matter into isopropyl alcohol; adding water; controlling temperature; stirring and adding D-(+)-Di-para-toluoyl-tartaric acid (D-DTTA) (II); after a reaction liquid becomes transparent, continuing to stir to crystallize, filtrating, washing and drying to obtain a crude (S)-4-[4-dimethylamino-1-(4-fluorophenyl)-1-hydroxybutyl]-3-(hydroxymethyl) benzonitrile hemi-D-(+)-Di-para-toluoyl-tartaric acid (III) product; heating the crude (S)-4-[4-dimethylamino-1-(4-fluorophenyl)-1-hydroxybutyl]-3-(hydroxymethyl) benzonitrile hemi-D-(+)-Di-para-toluoyl-tartaric acid (III) product in methanol to melt; controlling temperature; dropwise adding isopropyl alcohol to crystallize; decreasing temperature, carrying out suction filtering, washing and drying to obtain the fine product. The method is easy to operate, and the prepared tartrate is high in purity and yield.

A chemical mechanical polishing (CMP) apparatus is provided. A first roller is situated at a first point and a second roller situated at a second point, such that the first point is separate from the second point. A polishing pad strip is also included and has a first end secured to the first roller and a second end secured to the second roller in a web handling arrangement. The polishing pad strip is configured to provide a surface onto which a substrate to be polished is lowered. Preferably, the polishing pad strip is a fixed abrasive pad and is configured to receive chemicals or DI water so as to facilitate a removal of material from a surface of the substrate.

The invention relates to a formula of water dispersing compounding sand consolidation agent. It is made up from modified phenol-formaldehyde resin 5-8%, organic silicon resin 0.02-0.25%, furfural compounding 5-15%, alcohol compounding 0.5-5%, phosphoric acid series compounding 0.05-0.15% and water 89.43-81.6%. The benefit is that the sand consolidation agent has low viscosity, low usage quantity, low cost, etc.

The present invention relates to the preparation process and is especially the preparation process of powdered soybean phosphatide. The preparation process includes the steps of: mixing concentrated soybean phosphatide material with acetone of 2-30 times volume and the first homogeneous extraction to make soybean phosphatide dissolve in the solvent; solid-liquid separation to make liquid phase enter mixed oil tank and solid phase phosphatide second extracted; extraction in the second extractor with acetone; the second separation of mixed liquid after the second extraction in centrifuge; powdering solid soybean phosphatide; vacuum heating to dry soybean phosphatide; and recovering mixed oil in mixed oil tank. The present invention is used in producing high-quality medical soybean phosphatide.

The invention discloses a method for removing ginkgolic acid in a ginkgo biloba extract. The method comprises the following steps: firstly detecting the content of ginkgolic acid in the ginkgo biloba extract; then adding water into the ginkgo biloba extract; fully stirring and dissolving; adding a non-toxic alkaline substance to adjust the pH to 7-10; then adding a surfactant; after uniformly mixing, adding the obtained raw material liquid into a foam separator; continuously blowing air from the bottom of the foam separator to form foam; collecting foam discharged from the top end of the foam separator till no foam is generated, wherein the obtained foam liquid is a solution containing the ginkgolic acid and the residual foam-free solution in the foam separator is a solution without the ginkgolic acid; and concentrating and drying the solution without the ginkgolic acid to obtain the ginkgo biloba extract without the ginkgolic acid, wherein the surfactant is a polyhydric alcohol surfactant. The method disclosed by the invention is simple to operate, high in ginkgolic acid removal rate and low in operating cost, and the content of th ginkgolic acid in the ginkgo biloba extract finally obtained is reduced to below 5ppm.

This invention discloses a method for producing high-quality diesel oil from whole fraction oil of coking. The method comprises: separating whole fraction oil of coking into light fraction oil (containing part of light diesel oil fraction) and heavy fraction oil (containing heavy diesel oil fraction), hydrogenation-modifying the heavy fraction oil in the presence of beta-zeolite-containing hydrogenation catalyst, hydrogenation-refining the light fraction oil, and fractionating the effluent. The method can obtain high-quality cloean diesel oil and high-quality naphtha, and has such advantages as simple process and low energy consumption.

The invention discloses an agricultural pest intelligent terminal analysis system, and relates to improvement of an agricultural pest analysis system, in particular to a detection and analysis system of an agricultural pest intelligent terminal, wherein crop diseases and insect pests are separately prevented and treated. The disease prevention and control analysis method comprises the steps of 1, establishing an agricultural disease basic database, wherein the content of the basic database comprises the category of each kind of crops, then numbering the various daily crops as A1, A2, A3, A4... An, registering and numbering the growth time, height, leaf size, rhizome length and thickness of each kind of crops; recording and registering time, date, daily temperature and humidity and atmospheric pressure, and registering and numbering the data; and setting the content of the basic database in the cloud end of the Internet of Things. according to the method, an early warning analysis report of the occurrence level of the plant diseases and insect pests can be given before the plant diseases and insect pests occur, the content is detailed, meanwhile, a corresponding prevention and control method is given, the plant diseases and insect pests are effectively avoided, the influence of the plant diseases and insect pests on the crop yield is reduced to the minimum, and huge economic losses to the country and people are avoided. The method is simple, accurate in early warning information and high in reliability, and has obvious advantages compared with the prior art.

A process for preparing the clean diesel oil by hydromodifying, isomerizing and lowering pour point features that the fractional oil raw material and H2 pass through a catalyst bed to obtain clean high-quality diesel and the naphtha product with low contents of sulfur and nitrogen and high content of arylhydrocarbon. Said catalyst bed contains hydrocatalyst bed containing beta zeolite (0.5-20 wt.%).

The invention relates to a method for producing diesel oil through hydrogenation modification, modification, isomerization and decondensation of coal tar. Separating coal tar into residual oil and distillate oil, using distillate oil as raw material, adopting a single-stage or series process flow, under suitable operating conditions, distillate oil raw material and hydrogen pass through the catalyst bed to obtain low freezing point diesel products And a small amount of naphtha products with low sulfur and nitrogen content. It is characterized in that the catalyst bed includes a hydrogenation treatment catalyst bed containing 0.5-<20wt% of zeolite beta. The key point of this technology is that it can directly provide high-quality diesel products with low freezing point and high cetane number, and at the same time provide a suitable technological route for the rational application of coal tar.

The invention provides a preparation method of ergosterol, which comprises the following steps: carrying out ultrasonic treatment, saponification and column chromatography purification on a strain, and recrystallizing twice to obtain the ergosterol product. The extraction rate of ergosterol can reach 1.63%, the purity is highe r than 99%, and the content is higher than 95%. According to the method, the advantages of ultrasonic wall breaking and saponification extraction are combined, the two operations are innovatively carried out step by step, and the extraction rate is greatly increased. Inaddition, tests find that in the purification process, recrystallization is carried out twice after column chromatography is finished, and the product purity is the highest and is remarkably superiorto that of one or three times of recrystallization. According to the whole ergosterol preparation method, most of the used solvents can be recycled, the production conditions are mild, batch production is easy to realize in factories, the cost is low, the efficiency is high, and the product is high in quality.

The invention provides a semiconductor device that provides a high yield and has high reliability. A concave portion (5) is formed on a front surface of a semiconductor substrate (1), and a convex (7) portion is formed on an insulation substrate (6) (such as glass), corresponding to this concave portion (5). Then, the concave portion (5) and the convex portion (7) are engaged to bond the semiconductor substrate (1) and the insulation substrate (6) with an adhesion layer (8) interposed therebetween. A back surface of the semiconductor substrate is back-ground to expose the convex portion (7), and after then, processes such as forming a via hole, forming a penetrating electrode, forming a conductive terminal, and dicing are performed. At this time, the front surface and a sidewall of the semiconductor substrate (1) are covered (protected) with the insulation substrate. The convex portion (7) has a predetermined width and the dicing is performed almost on the center of the convex portion (7).

The invention belongs to the field of medicament synthesis, and particularly relates to a method for preparing tartrate. The method comprises the following steps of: dissolving an (RS)-4-[4-dimethylamino-1-(4-fluorophenyl)-1-hydroxybutyl]-3-(hydroxymethyl) benzonitrile (I) oily matter into isopropyl alcohol; adding water; controlling temperature; stirring and adding D-(+)-Di-para-toluoyl-tartaric acid (D-DTTA) (II); after a reaction liquid becomes transparent, continuing to stir to crystallize, filtrating, washing and drying to obtain a crude (S)-4-[4-dimethylamino-1-(4-fluorophenyl)-1-hydroxybutyl]-3-(hydroxymethyl) benzonitrile hemi-D-(+)-Di-para-toluoyl-tartaric acid (III) product; heating the crude (S)-4-[4-dimethylamino-1-(4-fluorophenyl)-1-hydroxybutyl]-3-(hydroxymethyl) benzonitrile hemi-D-(+)-Di-para-toluoyl-tartaric acid (III) product in methanol to melt; controlling temperature; dropwise adding isopropyl alcohol to crystallize; decreasing temperature, carrying out suction filtering, washing and drying to obtain the fine product. The method is easy to operate, and the prepared tartrate is high in purity and yield.

The invention belongs to the field of chemistry, and particularly relates to a triazole derivative and application of the derivative in plant growth regulation and bactericide. The triazole derivative is a compound as shown in a general formula I defined in the description, a diastereoisomer, a chiral isomer or a salt thereof. The definition of each substituent group in the formula is shown in the description. The compound provided by the invention can be applied to plant growth regulation and bactericides.

Production of hydrogenated and pour-point reducing modified isomerization diesel oil is carried out by using fraction oil as raw material from one-stage or series process flow, passing fraction oil raw material and hydrogen gas into catalyst bed which consists of beta molecular sieve 1-9wt%, and obtaining clean high-quality diesel product and naphtha product with low sulfur nitrogen and high arene content. The beta molecular sieve has small crystal grain, low acidity, high silica-alumina ratio and crystallinity. It achieves simple process, higher productivity and less impurities, and improves density and freezing point.

The invention relates to a preparation technology of 2,2-methylbutanoic acid, and relates to the field of chemical reagent synthesis. The preparation technology of 2,2-methylbutanoic acid includes thesteps that tertiary pentyl magnesyl Grignard reagent and carbon dioxide are subjected to an addition reaction, then hydrolysis is conducted, and finally the 2,2-methylbutanoic acid is obtained; the tertiary pentyl magnesyl Grignard reagent and carbon dioxide are subjected to a carbonyl addition reaction, the preparation technology is easy to operate, raw materials are easy to obtain, the yield ishigh, meanwhile, the prepared product is easy to purify and can reach 99% after purification, and application prospects are good.

The invention relates to the field of agriculture, the invention particularly relates to a red date disease and pest prediction system based on the Internet of Things. The system comprises an image acquisition module and a disease and pest prediction APP which realizes wireless communication with the image acquisition module and is internally loaded in a mobile terminal. The image acquisition module is used for acquiring an image of a to-be-detected red date tree at a fixed point through the unmanned aerial vehicle and sending acquired image data to the disease and pest prediction APP in realtime through the wireless communication module; and the disease and pest prediction APP is used for realizing planning of an image acquisition track and an image acquisition coordinate point of the unmanned aerial vehicle, realizing identification of disease and pest information carried in the detected red date tree image, and outputting a corresponding red date disease and pest prediction reportbased on an identification result. According to the invention, automatic identification, statistical analysis and prediction of red date tree diseases and pests are realized.

The invention provides a post-treatment method for preparing 1,3-dimethyl-4-iminourazine, belonging to the technical field of chemical processes. The method comprises the following steps: adding dimethyl cyanoacetylurea into a cyclization reaction tank, and adding liquid sodium hydroxide for a cyclization reaction; carrying out a heat-preserved reaction at a final temperature to obtain a crude 1,3-dimethyl-4-iminourazine product; carrying out centrifugal separation on the crude 1,3-dimethyl-4-iminourazine product to obtain a 1,3-dimethyl-4-iminourazine mother solution and a 1,3-dimethyl-4-iminourazine solid; and carrying out sewage treatment on the 1,3-dimethyl-4-iminourazine mother solution obtained in the step 3, putting the 1,3-dimethyl-4-iminourazine solid into a transfer tank, addingdrinking water to a constant volume, and carrying out beating and mixing to form a turbid liquid. The total impurity content of a finished caffeine product obtained by the treatment method is greatlyreduced, and the variety of impurities is greatly reduced.

The invention discloses a production system and production method of a passivated pure calcium core-spun yarn, belonging to the technical field of steelmaking furnace external refining. The production system comprises a heater, an extruding machine, a core-spun yarn unit, a passivating treatment device and an automatic charging mechanism, wherein the automatic charging mechanism comprises a pressure sensor, a solenoid valve, a passivated liquid pump and a control unit; a liquid outlet of the passivated liquid pump is connected with a liquid inlet on the upper part of the passivating treatment device through a liquid delivery pipeline; the liquid delivery pipeline is provided with a solenoid valve; the pressure sensor is installed at the liquid inlet on the upper part of the passivating treatment device; a signal output end of the pressure sensor is connected with an input end of the control unit; a switch of the passivated liquid pump is connected with an output end of the control unit; and the liquid inlet of the passivated liquid pump is connected with a passivated liquid storage tank through a pipeline. By using the passivated pure calcium core-spun yarn, the oxidation loss of calcium lines is reduced, so that the calcium yield in the molten steel is greatly enhanced.

This invention discloses a method for producing high-quality diesel oil from whole fraction oil of coking. The method comprises: separating whole fraction of coking into light fraction oil of coking (containing part of light diesel oil fraction) and heavy fraction oil of coking (containing heavy diesel oil fraction), hydrogenation-modifying heavy fraction oil of coking in the presence of beta-zeolite-containing hydrogenation catalyst, mixing the modification product with light fraction oil of coking, and hydrogenation-refining. The method can obtain high-quality clean diesel oil and high-quality naphtha, and has such advantages as simple process and low energy consumption.

The invention relates to a formula of water dispersing compounding sand consolidation agent. It is made up from modified phenol-formaldehyde resin 5-8%, organic silicon resin 0.02-0.25%, furfural compounding 5-15%, alcohol compounding 0.5-5%, phosphoric acid series compounding 0.05-0.15% and water 89.43-81.6%. The benefit is that the sand consolidation agent has low viscosity, low usage quantity, low cost, etc.

The invention discloses a method for effectively removing cadmium from shellfish polysaccharide, which belongs to the technical field of marine product processing. The method comprises the following steps of: taking chitosan as a raw material, sequentially carrying out thermal activation and acid activating treatment on natural attapulgite to obtain the modified attapulgite, taking a chitosan sol subjected to physical modification, adding ultrapure water for diluting, and then slowly adding the modified attapulgite for carrying out primary loading; slowly adding the prepared primary loaded attapulgite to the chitosan sol undiluted, and carrying out secondary loading; and treating the compound with 1.0mol / L of sodium hydroxide solution for 1h, washing to be neutral with ultrapure water, and leaching and drying to obtain attapulgite-chitosan particles of 200 meshes, which are used for removing the cadmium from the shellfish polysaccharide. The method for removing the cadmium from the shellfish polysaccharide has high removal efficiency and little impact on the polysaccharide.

The invention discloses a correction method for citrus boron poisoning, which adopts a preparation for the underground part and a preparation for the above-ground part; the preparation for the underground part is 15% copper ammonia and algal seaweed fertilizer; the preparation for the above-ground part is 25% pyrazole Ayresstrobin, amino acid calcium, and sodium nitrophenolate; the corrective method is: after the diagnosis of citrus boron poisoning, spray the crown of the tree 4 times on the ground part according to the reagent ratio, once a month, and the leaves must be sprayed thoroughly each time; at the same time, The underground part is irrigated 3 times according to the reagent ratio, once every 20 days or so, and the ratio solution is 10-15kg each time. After the diagnosis of citrus tree boron poisoning, adopt the optimal ratio of the present invention, the yellowing area of ​​citrus tree leaves will not expand, the leaves will not fall off, and the new shoots drawn out after 2 months will be normal, and the leaves and soil will be normal within 6 months The effective boron value is normal, and the impact on the yield of the tree in the current year is relatively small; at the same time, the technology adopted in the invention has strong practical operability, quick effect, and low cost to solve the boron poisoning of citrus.

The invention discloses a production method of a passivated pure calcium core-spun yarn, and belongs to the technical field of outer refining of steel refining furnaces. The production method of the passivated pure calcium core-spun yarn comprises the steps of preparation of passivation liquid, heating of a calcium rod and yarn formation through extruding, passivating treatment of a calcium yarn and coating treatment of the calcium yarn. An automatic injecting mechanism comprises a pressure sensor, an electromagnetic valve, a passivation liquid pump and a control unit; a liquid outlet of the passivation liquid pump is connected with a liquid inlet in the upper part of a passivation treater through a liquid conveying pipe; the electromagnetic valve is mounted on the liquid conveying pipe; the pressure sensor is mounted in the liquid inlet in the upper part of the passivation treater; a signal output end of the pressure sensor is connected with an input end of the control unit; a switch of the passivation liquid pump is connected with an output end of the control unit; and a liquid inlet of the passivation liquid pump is connected with a passivation liquid storage tank through a pipe. The passivated pure calcium core-spun yarn is used for reducing the oxidation loss of the calcium yarn, so that the yield of calcium in molten steel is largely increased.

The invention discloses a bacillus cereus with heterotrophic nitrification-aerobic denitrification performance and an N2O emission control method thereof, wherein the accession number of the bacillus cereus is CGMCC NO.3047. The bacillus cereus can degrade nitrate under the aerobic condition and perform denitrification; and the bacillus cereus can also grow in the ammonia nitrogen wastewater, perform heterotrophic nitrification-aerobic denitrification by using ammonia nitrogen under the aerobic condition, obtain the gaseous product N2O with extremely low emission amount in the denitrification process and achieve the purpose of N2O emission control from the biological point of view.

The invention discloses a key exchange domain for controlling lipid chain length change of lipopeptide. The key exchange domain is a Cs-AL domain after exchange of a Cs-AL domain of RhizomideA and a Cs-AL domain of Holrhizin, or a Cs-AL domain after replacement of a Cs-AL domain of glbA by the Cs-AL domain of the Holrhizin, or a Cs-AL domain after replacement of the Cs-AL domain of the glbA by a Cs-AL domain of glpA. The invention also discloses mutants obtained by exchanging the key exchange domain and application of the mutants. Experiments prove that for the RhizomideA, the mutant rzmACsholA can directionally obtain a derivative with C8 lipid chain length; for the Holrhizin, the mutant holACsrzmA can directionally obtain a derivative with C2 lipid chain length; and the two mutants glbACsholA and glbACsglpA of the glbA can obtain derivatives with C8 and C10 lipid chain lengths respectively. It is indicated that the key exchange domain has huge application value in guiding modification of lipopeptide which has a medicinal prospect and even is already a patent medicine.