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

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.

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 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.

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.

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 cultivating method of longan variety renovation. The cultivating method comprises the following steps of: A, field planting one longan tree between each two old longan trees, and field planting one row of longan tree between each two rows of old longan trees; B, digging a field planting pit; C, spreading fertilizer over the digged-out fermented soil, and backfilling the soil fertilizer; D, digging a field planting hole in the middle of a soil face of the field planting pit, pouring water into the field planting hole, and putting seedlings into the field planting hole before water is fully infiltrated; E, paving a mulching film after field planting; F, spraying monopotassium phosphate on leaves; G, trimming tips and determining stems: leaving 4-6 directional principal branches for each tree; and H, pruning: pruning branches of the old longan trees shaded by new planted trees, and gradually pruning and removing braches of the old longan trees which disturb the growth of the new planted trees after fruitage. The method is easy to realize, is simple and convenient to operate, and can be used for renovating varieties in good time for longan industry, so that the product quality is promoted, and a renovation technology guarantee is provided for realizing development.

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.

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 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.