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44results about How to "Simplify subsequent processing steps" patented technology

Regeneration method of CaO/Al2O3 desulfurizing agent

The regeneration method of CuO / Al2O3 desulfurizer is that the CuO / gamma-Al2O3 desulfurizer for absorbing sulfur can be reduced and regenerated in the atmosphere containing ammonia gas, its regeneration temp. is 350-500 deg.C, space velocity is 500-3000 hr (-1) and regeneration time is 30-90 min. Its regeneration process is simple, its secondary desulfurizing activity is stable, the SO2 produced in the course of regeneration can be combined with unreacted NH3 under the condition of low temp. to form solid ammonium sulfate salt.
Owner:SHANXI INST OF COAL CHEM CHINESE ACAD OF SCI

Pulse laser cutting method for fragile materials

The invention discloses a pulse laser cutting method for fragile materials, which utilizes a device comprising a pulse laser with a pulse width of millisecond level, a computer, an electric horizontal moving platform and the like to cut a fragile plate-like material. By utilizing the characteristics that linearly polarized laser can form long and narrow ablated areas on the surface of the material and that the fragile material can be easily broken, the pulse laser cutting method forms uncrossed long and narrow ablated areas distributed at intervals on the surface of the fragile plate-like material along the scanning direction, then utilizes the stress of both ends of each ablated area to break the material, and connects the neighboring ablated areas together, and thereby cutting is finished. Since the pulse laser cutting method adopts the long and narrow ablated areas formed by the linearly polarized laser, the waste of the material can be reduced, the ablated areas are cut when the material is broken, fracture surfaces are smooth, and the cutting quality is high; the ablated areas are distributed at intervals, and do not need to be crossed by one another, the needed laser energy is little, the cutting speed is high, and the pulse laser cutting method can be widely applied to the cutting of glass, ceramics, semiconductors and other fragile plate-like materials.
Owner:NANJING UNIV OF SCI & TECH

Resilient probes for electrical testing

An apparatus for electrical testing having probes (201) constructed of metal elements (201a) of about equal size bonded together in substantially linear sequence. Further an insulating holder (202) having first and second surfaces and a plurality of metal-filled vias (210) traversing the holder from the first to the second surface; the vias form contact pads on the first and second surfaces. The contact pads (210a) of the first holder surface have a probe attached so that the probe is positioned about normal to the surface. A sheet (203) of resilient insulating material, which has first and second surfaces and a thickness traversed by a plurality of conducting traces (220), has its first sheet surface attached to the second holder surface so that at least one of the traces contacts one of the contact pads, respectively, to provide an electrical path to the second sheet surface. A printed circuit board, suitable for insertion into an electrical test apparatus, is attached to the second sheet surface so that a continuous electrical path is established from the apparatus to each of the probes.
Owner:TEXAS INSTR INC

Exopolysaccharide generated by pseudomonas, culture method and application

The invention relates to an exopolysaccharide generated by pseudomonas, a culture method and application. The pseudomonas sp. QL212 is preserved in common microbe center of China Committee for Culture Collection of Microorganisms on September 12, 2014, at the address of Institute of Microbiology of Chinese Academy of Sciences, No.3, Yard No. 1, West Beichen Road, Chaoyang District, Beijing, and having the preservation number of CGMCC NO.9651. The curdlan synthesized by the pseudomonas sp. QL212 serves as the exopolysaccharide; through fermentation condition optimization, the yield of curdlan is up to 5.94 g / L which is higher than the production peak of the already known pseudomonas curdlan.
Owner:UNIV OF JINAN

Resilient probes for electrical testing

An apparatus for electrical testing having probes (201) constructed of metal elements (201a) of about equal size bonded together in substantially linear sequence. Further an insulating holder (202) having first and second surfaces and a plurality of metal-filled vias (210) traversing the holder from the first to the second surface; the vias form contact pads on the first and second surfaces. The contact pads (210a) of the first holder surface have a probe attached so that the probe is positioned about normal to the surface. A sheet (203) of resilient insulating material, which has first and second surfaces and a thickness traversed by a plurality of conducting traces (220), has its first sheet surface attached to the second holder surface so that at least one of the traces contacts one of the contact pads, respectively, to provide an electrical path to the second sheet surface. A printed circuit board, suitable for insertion into an electrical test apparatus, is attached to the second sheet surface so that a continuous electrical path is established from the apparatus to each of the probes.
Owner:TEXAS INSTR INC

Process for separating and purifying ziuc and manganese dioxide in comprehensiv treating waste battery

The invention discloses a technique to separate and purify the zinc and manganese dioxide in the process of integration managing scrap batteries, crushing the scrap batteries, filtering the metal zinc and sheet iron, floating carbon powder, electrolysing the remanent powdery mixture to seperate the powder of zinc and manganese dioxide, electrolysing the remanent solution in the same electrolytic cell and at the same time under room temperature. The zinc and manganese dioxide deposit at the cathode and anticathode separately. The invention is featured by simple technique and without environmental pollution.

Leaf removing, skin cutting and stalk scraping type straw skin-stalk separation device and method

The invention discloses a leaf removing, skin cutting and stalk scraping type straw skin-stalk separation device and method, belongs to the technical field of biomass energy utilization, and solves the problems that an existing separation machine is incomplete in straw skin-stalk separation, poor in separation effect, low in production capacity and high in energy consumption. The device is characterized in that a feeding device, a leaf removing device, a positioning and cutting device, a clamping device and a stalk scraping device are arranged on a rack in sequence; the feeding device is usedfor feeding the straw into the leaf removing device; the leaf removing device is used for removing straw leaves, tearing off the straw leaves, tearing off the leaves, and feeding the straw into the positioning and cutting device; the positioning and cutting device is used for positioning and cutting the straw, longitudinally cutting the straw and feeding the straw into the clamping device; the clamping device is used for clamping the straw and driving the straw to move forwards to the stalk scraping device; and the stalk scraping device is used for separating the straw skin and stalk. The device and the method are used for straw skin-stalk separation treatment.
Owner:NORTHEAST FORESTRY UNIVERSITY

Hybrid power full-electric control sugarcane harvester

The invention discloses a hybrid power full-electric control sugarcane harvester. The hybrid power full-electric control sugarcane harvester comprises a frame and a crawler walking device arranged at the bottom and used for walking; a sugarcane supporting device used for pushing sugarcanes to the middle and the upper portion is arranged at the front end of the frame; a gathering and cutting device used for cutting off the bottoms of sugarcanes and shifting the cut sugarcanes to the middle is arranged in the middle of the front end of the frame; a sugarcane plant conveying device used for preliminarily conveying the sugarcanes is arranged at the discharging end of the gathering and cutting device; and a leaf stripping device used for stripping leaves on surfaces of sugarcanes is correspondingly arranged at the discharging end of the sugarcane plant conveying device. The hybrid power full-electric control sugarcane harvester is designed according to existing requirements, the structure of the harvester is simplified, the harvester can cut off the sugarcane, the sugarcane can be collected in time, and in the collecting process, the leaves can be removed, the subsequent treatment steps are simplified, and the practicability is high.
Owner:广西蓝星智能农机装备有限责任公司

Magnetic suspension water ring conveying pump

The invention discloses a magnetic suspension water ring conveying pump used for liquid ring water film conveying and relates to a liquid ring conveying technology used and adopted for conveying crude oil, mud, mud and sand, and other viscous substances. According to the technical scheme, the magnetic suspension water ring conveying pump comprises a rotating flange, a protective shell, a radial stator, a radial coil winding, a thrust disk, an axial stator, a supporting part, a sealing part, a power amplifier, a sensor, a controller, an axial coil winding, a rotor, a permanent magnet and spiral blades. The magnetic suspension water ring conveying pump has the beneficial effects that when viscous liquid is conveyed, a spiral liquid ring water film with water and oil rotating at the same time can be generated, it can be avoided that the water and the oil are stirred because of the huge difference of the water and oil tangential speeds to form a liquid phase which is surrounded by another liquid phase in a liquid drop manner, and finally emulsion is formed, the flowing resistance in the conveying process can be substantially lowered, and the pipe conveying energy consumption of high-viscosity oil is greatly reduced.
Owner:CHINA UNIV OF PETROLEUM (EAST CHINA)

Novel waste gas treatment apparatus

The invention discloses novel waste gas treatment apparatus. A sedimentation device comprises a sedimentation pipeline and a collection box, wherein the sedimentation pipeline is arranged on the collection box, nozzles are arranged at the top of the sedimentation pipeline, a sedimentation port communicating with the collecting tank is formed at the bottom of the sedimentation pipeline, and a wastegas outlet is formed in one side of the collecting tank; a treatment device comprises a water tank provided with an air inlet main pipe, wherein the air inlet main pipe is connected with a pluralityof air inlet branch pipes which are arrayed in an array mode, the water tank is provided with an air inlet pipe communicating with the waste gas outlet; and a discharging device comprises an ozone generator and an exhaust pipe. The apparatus is ingenious in design, compact in structure and small in occupied area; the sedimentation device can be used to timely and thoroughly carry out sedimentationtreatment on dust in waste gas, and treatment efficiency is high; the treatment device can be used for storing all reactants, so that gas emitted to the air can meet relevant requirements of the environment protection department; and the discharging device can effectively remove residual harmful substances and peculiar smells in the waste gas. The novel waste gas treatment apparatus can be used for multistage purification treatment, is high in purification efficiency, is environmentally friendly and free of pollution, is convenient to maintain, has low cost and is convenient for popularization and application.
Owner:李金奇

Concentrated wax removing solution convenient for wax separation, and preparation method thereof

The invention discloses a concentrated wax removing solution convenient for wax separation, and a preparation method thereof, and belongs to the field of metal washing agent. The concentrated wax removing solution convenient for wax separation comprises, by weight, 1 to 3 parts of modified MOFs, 7.5 to 8 parts of nonylphenol polyoxyethylene ether; 15 to 16 parts of coconutt diethanol amide; 2.5 to3 parts of glycerol; 0.5 to 1 part of polyethylene glycol; 9 to 10 parts of diethylenetriamine; and 40 to 50 parts of anhydrous ethanol; wherein the modified MOFs comprises MOFs and expanded graphitein MOFs channels and pores. The concentrated wax removing solution is capable of simplifying wax removing solution post-treatment step.
Owner:厦门普诺尔新材料科技有限公司

Method for shaping throat liner lining

The invention discloses a forming method for throat insert lining; wherein, a clamp is arranged on the terminal of the inner core mold with the stable shape and structure, according to the inner structure of throat insert lining; the high melting point metal material sprayed coating layer is sprayed on the outer flank of the inner core mold by the art of air plasma spraying, according to the thickness demand of throat insert lining; the compatibility of the sprayed coating layer material and the inner core mold material is low; the separation of the sprayed coating layer material and the inner core mold material is easy; the outer profile of the sprayed coating layer is finish-machined, the inner core mold is separated from and the acquired sprayed coating layer is the product of throat insert lining, according to the exterior shape and structure of throat insert lining and the thickness demand of each part. The forming method for throat insert lining has the advantages of simple technology, easy manufacture, realizing the near-size forming, low raw material cost, simplifying the subsequent processing procedures, and resolving the problems of high temperature resistant thin wall irregular parts forming of difficult machining and easy broken of shaped product.
Owner:XIAN AEROSPACE COMPOSITE MATERIALS INST

Non-notched cap and body stainless steel capsule mold

PendingCN111844580APort flatPort simplificationCapsule deliveryCoatingsSS - Stainless steelMechanical engineering
The invention relates to the technical field of capsule molds, and particularly discloses a non-notched cap and body stainless steel capsule mold. The mold comprises a capsule mold and a capsule cap mold, the capsule mold comprises a first connecting part, a first upper cylinder and a first lower cylinder, the first connecting part, the first upper cylinder and the first lower cylinder are sequentially connected from top to bottom, the diameter of the first upper cylinder is larger than that of the first lower cylinder, a first annular blocking surface is formed at the joint of the first uppercylinder and the first lower cylinder, and a first annular groove is formed in the outer circular surface of the upper end of the first lower cylinder positioned below the first annular blocking surface. According to the mold, a capsule prepared by the mold does not need to be subjected to circular cutting and deburring on end parts of a capsule body and a capsule cap after demoulding, the subsequent processing steps of capsule production are simplified, the waste of glue solution of about 30% is avoided, the utilization rate of raw materials is up to 100%, the waste of the raw materials in the capsule preparation process is effectively reduced, the benefits of enterprises are increased, and the effect is excellent.
Owner:安徽友邦锁具有限公司

Seamless ice sleeve spinning equipment with full-automatic plaiting switching function and spinning method of seamless ice sleeve spinning equipment

The invention discloses full-automatic switching plaiting seamless ice sleeve spinning equipment which comprises a spinning machine and a control console, the spinning machine comprises a spinning mechanism and an automatic switching plaiting mechanism, the control console comprises a front control console and a rear control console, and the front control console is connected with the rear control console; the spinning mechanism comprises a center shaft, the automatic switching plaiting mechanism is annularly arranged on the outer side of the spinning mechanism and connected with yarn needing to be spun, and the front console is connected with the spinning mechanism and the automatic switching plaiting mechanism. The automatic switching plaiting mechanism comprises a first spun yarn frame and a second roving frame, the first spun yarn frame and the second roving frame are both arranged on the center shaft, and the first spun yarn frame is arranged below the second roving frame. When textile products such as ice sleeves and the like are sewn, follow-up sewing operation is not needed, the spinning time of thick yarn and thin yarn can be automatically controlled, the automation degree is high, and the production efficiency is high. A sewn product is good in ductility, free of thread loosening and high in practicability.
Owner:义乌市金泉服饰有限公司

Conveying device for food processing

The invention belongs to the field of food processing, and relates to a conveying equipment technology, in particular to a conveying device for food processing. The conveying device for food processing comprises a working platform, and is characterized in that a conveying mechanism is arranged at the top of the working platform, two symmetrical cleaning mechanisms are arranged at the top of the working platform, the two cleaning mechanisms are arranged on the two sides of the conveying mechanism correspondingly, a mounting frame is fixedly mounted at the top of the working platform, and a hotair drying mechanism and a flattening mechanism are arranged in the mounting frame; and the hot air drying mechanism comprises an air bellow, a fan and an electric heating pipe, the air bellow is fixedly installed on the inner top wall of the mounting frame, and the fan is installed on the top face of the mounting frame through a support. Through the hot air drying mechanism and the flattening mechanism, food can be dried and subjected to surface flattening treatment while being conveyed, so that subsequent processing procedures are simplified, and therefore the food processing efficiency is improved.
Owner:淮南市十里桃花食品有限公司

Preparation method of bagged asparagus and flos lonicerae meal-replacement liquid with efficacy of immunity enhancement

The invention discloses a preparation method of bagged asparagus and flos lonicerae meal-replacement liquid with an efficacy of immunity enhancement. The preparation method includes steps: A, raw material selection; B, enzymolysis; C, juicing and concentration; D, mixing; E, packaging with small vacuum bags; F, sterilization treatment. By adoption of asparagus, flos lonicerae and Dangshan pears, aproduct with strong functionality, excellent taste and great satiety effect can be prepared; by means of enzymolysis, juicing, secondary enzymolysis, concentrating and mixing, the juice acquisition rate and the oligosaccharide content in juice can be increased effectively, and nutrients of the juice are increased; raw material smashing efficiency can be improved effectively through cutters, and smashed materials can be flushed by preliminarily-pressed juice spilled by a third cutter and prevented from being attached on the wall; by extrusion of the smashed raw materials between two filter membrane belts, residues and fibers in the raw materials are isolated, juice purity is guaranteed, subsequent processing steps are simplified, repeated filter operations in a traditional processing process are avoided, and practical production of the product is benefited.
Owner:WANNAN MEDICAL COLLEGE

Processing method for improving content of aromatic substances in black tea

InactiveCN107467208AImprove pest and corrosion resistanceHigh activityPre-extraction tea treatmentTea flavoringBlack teaFermentation
The invention relates to the technical field of tea processing, and discloses a processing method for increasing the content of aromatic substances in black tea. Selective absorption makes the color better and darker, the aroma is longer, the soup color is red and thick, and the anti-insect and antiseptic properties of black tea are improved; (2) The shaking green process is divided into 3 steps, so that the activity of the enzyme during the withering process is improved, Furthermore, strong enzymatic oxidation occurs during the fermentation process, which causes the macromolecular substances in black tea to undergo hydrolysis reaction, catechins and polyphenolic compounds are oxidized and polymerized, and a large number of aroma compounds, as well as theaflavins, theabrownins and tea reds are formed. (3) Quickly kneading the black tea leaves can reduce the loss of aromatic compounds and simplify the subsequent processing steps.
Owner:安徽汇灵农业科技有限公司

Urine and excrement separation deVice

The inVention relates to the field of excrement collection, in particular to a urine and excrement separation deVice. The deVice comprises a squatting pan and a separation and collection box, the separation and collection box is located below the squatting pan, and the separation and collection box is diVided into a urine chamber and an excrement chamber through an internal isolation mechanism; two through holes are formed in the bottom of the squatting pan, and the two through holes are communicated with the excrement chamber and the urinal chamber respectiVely; the isolation mechanism comprises two Vertical partition plates and a filter screen, the partition plates are horizontally arranged at an interVal, and a plurality of filter holes are formed in the two partition plates; a urinal outlet is formed in the bottom of the urine chamber, and the urinal outlet is connected with an electric control ValVe; the bottom of the excrement chamber is of a funnel-shaped structure, and an opening and closing mechanism is arranged at the bottom of the excrement chamber; liquid leVel sensors are arranged on the inner wall of the excrement chamber and the inner wall of the urine chamber. The urine and excrement separation deVice can separate urine from excrement and collecting the urine and the excrement during excretion of a user, the subsequent treatment steps of the excrement are simplified, and the recycling efficiency of the excrement after separation is improVed.
Owner:大庆洛克石油装备制造有限公司

Preparation method for cyclized intermediate of florfenicol

The invention discloses a preparation method for a key intermediate of florfenicol. The preparation method comprises the following steps: with D-threo-p-methylsulfonylphenylserine ethyl ester as a starting material, directly allowing the D-threo-p-methylsulfonylphenylserine ethyl ester to undergo a cyclization reaction with dichloroacetonitrile, and directly allowing an obtained cyclization product to undergo a reduction reaction without the need of isolation so as to prepare a key intermediate compound of the florfenicol, i.e., D-threo-2-(dichloromethyl)-4,5-dihydro-5-[para-(methylsulfonyl)phenyl]-4-oxazole methanol. The preparation method provided by the invention avoids side reactions and the use of a glycerin solvent, greatly improves economy, simplifies subsequent treatment steps, andfurther improves the yield of a product.
Owner:京山瑞生制药有限公司

Selective laser melting (SLM) molding method for magnesium alloy stent

The invention provides a selective laser melting (SLM) molding method for a magnesium alloy stent, comprising the following steps: (1) constructing a stent geometrical model in an upper computer, layering and dispersing the geometrical model, and generating a scanning path based on the geometrical model; (2) injecting inert gas in a molding chamber and controlling the oxygen concentration in the molding chamber within a certain concentration range; (3) supplying metal powder to a molding cylinder in the molding chamber by a powder supplier and spreading the metal powder on the molding cylinder by a powder spreading device; (4) adopting laser to scan the metal powder; (5) judging whether the stent is molded or not, if so, taking a stent molding piece out, and otherwise, executing the next steps; and (6) descending the molding cylinder by one layer, repeating the steps of (3), (4) and (5), and melting the metal powder layer by layer until deposition molding to obtain the molded magnesium alloy stent. The invention can mold stents with grids in arbitrary shapes and has the advantages of high manufacture precision and the like.
Owner:SOUTH CHINA UNIV OF TECH

Method for shaping throat liner lining

The invention discloses a forming method for throat insert lining; wherein, a clamp is arranged on the terminal of the inner core mold with the stable shape and structure, according to the inner structure of throat insert lining; the high melting point metal material sprayed coating layer is sprayed on the outer flank of the inner core mold by the art of air plasma spraying, according to the thickness demand of throat insert lining; the compatibility of the sprayed coating layer material and the inner core mold material is low; the separation of the sprayed coating layer material and the inner core mold material is easy; the outer profile of the sprayed coating layer is finish-machined, the inner core mold is separated from and the acquired sprayed coating layer is the product of throat insert lining, according to the exterior shape and structure of throat insert lining and the thickness demand of each part. The forming method for throat insert lining has the advantages of simple technology, easy manufacture, realizing the near-size forming, low raw material cost, simplifying the subsequent processing procedures, and resolving the problems of high temperature resistant thin wall irregular parts forming of difficult machining and easy broken of shaped product.
Owner:XIAN AEROSPACE COMPOSITE MATERIALS INST

A kind of preparation method of florfenicol ring compound intermediate

The invention discloses a preparation method of a key intermediate of florfenicol, which uses D-threo-p-thiamphenicol phenylserine ethyl ester as a starting material, and first directly performs a cyclization reaction with dichloroacetonitrile, and the obtained cyclization The product does not need to be separated, and the reduction reaction is directly carried out to prepare the key intermediate compound D-threo-2-(dichloromethyl)-4,5-dihydro-5-[p-(thymphenicol) of Florfenicol ) phenyl]-4-oxazole methanol, this process avoids the use of side reactions and glycerol solvents, greatly improves the economy, simplifies the follow-up processing steps, and the product yield is further improved.
Owner:京山瑞生制药有限公司

Tumor sampling device convenient for tumor separation

The invention relates to the technical field of medical equipment, and particularly discloses a tumor sampling device convenient for tumor separation. The tumor sampling device comprises a cylinder, a sampling mechanism, an adjusting mechanism and a cleaning and disinfecting mechanism, wherein a partition plate is mounted in the cylinder and divides the interior of the cylinder into a moving cavity and a storage cavity; the cylinder is provided with a controller and a power supply device; the bottom end of the cylinder is screwed with an end cover; the sampling mechanism is arranged in the storage cavity, and is used for realizing tumor sampling and collecting; the adjusting mechanism is arranged in the moving cavity and is used for adjusting the position of the sampling mechanism; and the cleaning and disinfecting mechanism is arranged on the inner wall of the storage cavity. Through the cleaning and disinfecting mechanism, the sampling mechanism can be flushed and be subjected to ultraviolet disinfection, so that sterilization of the sampling mechanism is realized, the sampling mechanism is effectively prevented from breeding germs, the practicability of the tumor sampling device is improved, and the tumor sampling device is convenient in use.
Owner:XINXIANG MEDICAL UNIV +1

Micro-breathable plastic film for tobacco packaging and preparation method

The invention relates to the field of preparation of packaging films and discloses a micro-breathable plastic film for tobacco packaging and a preparation method. The preparation method comprises thefollowing preparation processes: (1) coating the surface layer of non-woven fabric with soap type rosin size, and then, performing leveling; (2) bonding and compounding the soap type rosin size layerwith a PTFE (polytetrafluoroethylene) film layer to prepare a compound film precursor; and (3) rolling the compound film precursor through a cold roller to obtain the micro-breathable plastic film fortobacco packaging, wherein the air permeability of the micro-breathable plastic film is 8-12L / h, and the density of the micro-breathable plastic film is 0.7-0.9g / cm<3>. Compared with a common tobaccopackaging film, the micro-breathable plastic film prepared by the preparation method disclosed by the invention has the advantages of being good in air permeability, good in moisturizing property, suitable for high-grade tobacco packaging, saved in forest resources, good in environmental friendliness, simple in preparation process and high in production efficiency.
Owner:CHENDU NEW KELI CHEM SCI CO LTD

A kind of preparation method of pentafluorophenol

The invention relates to a preparation method for pentafluorophenol. By taking hexafluorobenzene as an initial raw material, pentafluorophenol is prepared through etherification reaction and cracking reaction or by taking hexafluorobenzene as the initial raw material, pentafluorophenol is prepared by virtue of a one-step method. The preparation method provided by the invention does not need high temperature and pressurization, is less in energy consumption, and does not use expensive hydroiodic acid, so that the cost of the raw materials is low. Moreover, wastewater generated by etherification reaction is less, so that the preparation method is environmental-friendly; Cracking is carried out in a solvent, the material stirring effect is good, the reaction temperature is easy to control, and industrialization is easy to implement.
Owner:KINGCHEM LIAONING CHEMICAL CO LTD

Method for cleaning ALD source steel cylinder

The invention discloses a method for cleaning an ALD source steel cylinder. The method for cleaning the ALD source steel cylinder comprises the following steps: (1) in a water-free and oxygen-free glove box, adding anhydrous alkane into the ALD precursor source steel cylinder for cleaning; (2) fully filling the steel cylinder cleaned in the step (1) with the anhydrous alkane, and carrying out ultrasonic cleaning; (3) moving the steel cylinder out of the glove box, and cleaning with an organic solvent-alkali system, an acid solution system and an ultrapure water system in sequence; and (4) fully filling the cleaned steel cylinder with ultrapure water, standing, carrying out ICP-OES detection, and drying for later use after the detection is qualified. By means of the cleaning method, precursors, oil substances, oxide impurities and metal impurity particles in the ALD precursor source steel cylinder can be cleaned, the ALD source filling requirement is met, the method is simple to operate, the cleaning process is safe and easy to operate, the cleaning raw materials are low in cost and short in period, and the requirements for purifying, filling and producing the steel cylinder can be rapidly provided.
Owner:苏州源展材料科技有限公司

A kind of preparation method of porous chitosan microspheres

The invention discloses a method for preparing porous chitosan microspheres. First, chitosan acetic acid solution and nanoparticle solution are added into an emulsified dispersant, and calcium ions are fully dispersed around chitosan molecules by mechanical stirring; then Adding a cross-linking agent and adjusting the pH value, calcium hydroxide particles are formed synchronously during the process of chitosan cross-linking into spheres, and in this process, calcium hydroxide generates nano-scale particles under the template effect of PEG. It is attached to the chitosan microsphere and occupies a certain position; after the cross-linking reaction, the microsphere product is soaked in hydrochloric acid to remove the calcium hydroxide particles, and then the porous chitosan microsphere is obtained. The chitosan microsphere synthesized by the invention has a large specific surface area and good dispersibility, which is beneficial to promote the adsorption modification performance of the chitosan microsphere, and the preparation method involved is simple, the reaction conditions are mild, and the requirements for equipment are low, and the subsequent treatment process Simple; low cost, suitable for popularization and application.
Owner:WUHAN INSTITUTE OF TECHNOLOGY

Method to reduce corner shunting during fabrication of CPP read heads

A method is presented for fabricating a CPP read head having a CPP read head sensor and a hard bias layer which includes forming a strip of sensor material in a sensor material region, and depositing strips of fast-milling dielectric material in first and second fast-milling dielectric material regions adjacent to the sensor material region. A protective layer and a layer of masking material are deposited on the strip of sensor material and the strips of fast-milling dielectric material to provide masked areas and exposed areas. A shaping source, such as an ion milling source, is provided which shapes the exposed areas. Hard bias material is then deposited on the regions of sensor material and fast-milling dielectric material to form caps on each of these regions. The caps of hard bias material and the masking material are then removed from each of these regions.
Owner:WESTERN DIGITAL TECH INC
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