2372results about How to "Promote precipitation" patented technology

The invention discloses a controlled release preparation with improved performance. The controlled release preparation comprises a core containing medicament and a controlled release film covering the outside of the core and being almost insoluble in water as well as stomach and intestines digestive juice. The controlled release film comprises particulate matters of a water soluble medicinal additive, the water-soluble medicinal additive is covered by a polymer film which can be soluble in the stomach and / or intestines digestive juice but almost insoluble in water, the polymer and the medicinal additive can not produce chemical reaction or can produce chemical reaction but do not produce water-insoluble non-gaseous products and the pharmaceutically unacceptable products, and the amount of the polymer is no more 700% of that of the medicinal additive. The invention also discloses a preparation method of the controlled release preparation. The controlled release preparation has the advantages of improved medicament release reproducibility, reduced medicament release lag time, accelerated medicament release and improved bioavailability, can realize located controlled release, delayed controlled release and interval type or pulse type controlled release of the medicament in the gastrointestinal tract, and the like.

An SOI wafer including: a supporting substrate 1; a BOX layer 2 provided above the supporting substrate 1, the BOX layer 2 being formed by a thermal oxidization; a gettering layer 3 provided immediately on the BOX layer 2 and mainly composed of a silicon which contains one or more of oxygen, carbon and nitrogen and contains at least oxygen; and an S layer 4 in which semiconductor devices are to be formed, the S layer 4 being mainly composed of a monocrystalline silicon.

In some embodiments, a method may include separating contaminants from impaired water. The method may include contacting impaired water with a peracetate oxidant solution. The method may include mixing said impaired water with the peracetate oxidant solution. The method may include separating the impaired water oxidant solution mixture into solids and a water phase. In some embodiments, the peracetate oxidant solution may include peracetate anions and a peracid. The peracetate oxidant solution may have a pH from about 10 to about pH 12. The peracetate oxidant solution may have a molar ratio of peracetate anions to peracid ranging from about 60:1 to about 6000:1. In some embodiments, a peracetate anion to hydrogen peroxide molar ratio is greater than about 16:1. In some embodiments, a reactive coagulant, a softener, and / or a floc aid may be added to the impaired water.

Disclosed is an optimized system for more efficiently and economically producing terephthalic acid. The system minimizes or eliminates the need for liquor exchange upstream of oxidative digestion and / or upstream of substantial cooling of the TPA-containing slurry.

Disclosed is a process for producing a glass ceramics which has a surface having excellent durability and has at least one titanium oxide crystal phase selected from those of anatase type, rutile type and brookite type. Also disclosed are a molded article having a photocatalytic function and a hydrophilic molded article each of which comprises the glass ceramics produced by the process. The glass ceramics comprises 15.0 to 95.0% by mol inclusive of a TiO2 component and 3.0 to 85.0% by mol inclusive of a P2O5 component and / or an SiO2 component in terms of oxide contents relative to the total amount of the glass ceramics.

A method for producing polyphenylene sulfide (PPS) polymer, including polymerizing reactants in a reaction mixture in a vessel to form PPS polymer in the vessel, measuring values of operating variables of the vessel and / or PPS process, and determining the amount of quench fluid to add to the vessel based on the values of the operating variables. The technique may rely on the vapor liquid equilibrium (VLE) of the mixture to calculate the concentration of water existing in the reactor prior to quench, and accounts for the effectiveness of the upstream dehydration process and in the amount of water produced during the polymerization. The technique is a striking improvement over the trial-and-error estimation of the amount of quench water based on human operating experience, and avoids direct measurements of the existing water concentration in the reactor. The result is improved control of PPS particle size and other properties.

The invention belongs to a technique for analyzing elements of an alloy, and relates to a method for measuring the contents of aluminum, titanium, manganese, nickel, tungsten and iron in a cobalt-base alloy. The method adopts an inductively coupled plasma atomic emission spectrometer and is different according to different measured elements and different tungsten contents; when high-content tungsten is dissolved, the volume of test solution needs to be maintained between 20 and 40 mL, or the tungsten is easy to be separated out; by performing interference experiments and spectrogram analyses, the method finds the optimal analytical line, overcomes the interferences caused by a plurality of elements such as major elements of cobalt, chromium, tungsten and the like in the cobalt-base alloy, and improves the measuring accuracy; the sample dissolving speed is accelerated, and the sample dissolving time is shortened to 2 hours from about two or three days; and the method has wide measuring ranges including: 0.05 to 0.30 percent of the aluminum, 0.05 to 0.30 percent of the titanium, 0.05 to 1.00 percent of the manganese, 0.05 to 24.00 percent of the nickel, 0.05 to 20.00 percent of the tungsten, and 0.05 to 3.00 percent of the iron.

The invention relates to a medium strength aluminium alloy wire with conductivity of 60% IACS, and a preparation method thereof, and belongs to the field of alloy manufacturing technology. The alloy elements comprise, by weight, 0.16%-0.22% of iron, 0.24%-0.30% of silicon, 0.40%-0.48% of magnesium, 0.01%-0.02% of boron and 0.08%-0.15% of a rare earth element, with the balance being aluminium. The medium strength aluminium alloy wire with a product conductivity higher than or equal to 60% IACS and tensile strength higher than or equal to 230 MPa is obtained by processes of selecting materials, smelting liquid aluminium, adjusting liquid aluminium ingredients, carrying out purifying treatment, deslagging, standing with heat preservation, degassing, filtering with heat preservation, casting and crystallizing, rolling an aluminum rod, drawing and aging. The wire and cable produced by using the aluminium alloy can be erected continuously by a conventional construction process. In a circuit operation process, circuit loss can be reduced; construction fee can be reduced; and the medium strength aluminium alloy has significant economic benefits and social benefits.

The invention provides an added material manufacturing device and a method. The device is characterized by comprising an added material machining part, a high-speed camera part, an infrared temperature measuring part, an optical measuring part, an internal defect detecting part, an aftertreatment part and a control part, wherein the high-speed camera part comprises a camera head, which moves withthe added material machining head at the same time to obtain material image information; the infrared temperature measuring part comprises a temperature measuring head, which moves with the added material machining head at the same time to obtain material temperature distribution information; the optical measuring part detects surface defects and forming sizes of materials to obtain detecting information; the internal defect detecting part comprises a detecting head and a detecting analyzer; the aftertreatment part treats material defect areas to eliminate defects by adopting corresponding aftertreatment modes; the aftertreatment modes comprise at least one of mechanical rolling treatment, laser shock reinforcement treatment and friction stir treatment; and the control part controls all the parts to operate to obtain various information, determines the defect treatment areas, aftertreatment paths and the aftertreatment modes based on the information, and controls the aftertreatment part to perform corresponding aftertreatments.

A desalination system comprises an electrical separation device configured to receive and ionize a first stream for desalination and a crystallization device. The crystallization device is configured to provide a second stream to the electrical separation device to carry away ions from the first stream, and defining a crystallization zone for facilitating precipitation of the ions and a solid-liquid separation zone in fluid communication with the crystallization zone for separation of the precipitate. A desalination method is also presented.

This invention relates to a catalyst system which is used for alkenes polymerizing or copolymerization, it includes solid catalyst composition A that contains titanium and organic Aluminum compound B, silicoorganic compound C, in the composing process of catalyst composition A, use aldyl ester of aryl group mon-carboxylic acid and aldyl ester of fatty series or multielement carboxylic acid of aryl group for reasonable combination, among them aldyl ester of aryl group mon-carboxylic can play a role of assisting separating agent, it is useful to separate catalyst particle; Meanwhile it is used as electron donor, it also can load on the surface of catalytic agent together with compound of multielement carboxylic esters, improve the surface structure of catalytic agent, thus improve the catalyzing function of catalytic agent. This catalytic agent that is used for propylene polymerizing has high catalytic activity and anti- impurity function, particle appearance of catalytic agent is good, particles distribute narrowly, hydro-adjusting function of catalytic agent is good, it is useful for many polymerizing technology such as seriflux method, noumenon method and gas method, molecular weight distribution of polymer is narrow, particle appearance of polymer is good, fine grits is little; Its fine anti-impurity function can effectively reduce production cost.

The present invention discloses a series flux-cored wire for reparation and refabrication of large-size medium-high carbon steel components and parts. Its chemical composition includes (wt%) 5-10 of fluorite, 25-45% of high-carbon ferrochrome, 2-10% of high-carbon manganese iron, 5-8% of tantiron, 10-15% of ferro-molybdenum, 8-14% of rare earth oxide, 5-15% of metal nickel, 2-5% of ferrovanadium, 0.5-2% of graphite, 2-4% of chloride and 1-2.5% of aluminium-magnesium alloy. Its external covering adopts low-carbon steel tape.

The present invention provides, in addition to other things, methods, systems, and apparatuses that involve the use of an optical fiber with grating and particulate coating that enables simultaneous heating; optical detection; and optionally temperature measurement. Methods, systems, and apparatuses of the present invention may be used in many applications including isothermal and / or thermal cycling reactions. In certain embodiments, the present invention provides methods, systems, and apparatuses for use in detecting, quantifying and / or identifying one or more known or unknown analytes in a sample.

The present invention discloses a all-solid lithium secondary battery that has large chare and discharge output current denseness and excellent charge and discharge cycle life which can be easily manufactured at low cost. In the manufacturing process of the all-solid lithium secondary battery, a new lithium ion conductor with ionic conduction improved can be obtained through vitrification to mixed electrolytes by mixing Alpha-oxide of alumina in various sulfide system lithium ion conductivity solid electrolyte. The electrolytes layer 8 used the lithium ion conductor, and positive and negative electrode (I), (II) are formed by positive and negative electrode material 3, 7 are constituted. Subsequently, cascading at least 1 layer in positive and negative electrode (I), (II) with electrolytes layer, and producing battery while electrolytes not crystallizes by heating and compressing as a whole.

Implantable prosthesis, components of prosthesis, and methods of making same are provided. The methods generally include the steps of providing an implant shell, applying a curable fluid composition to the shell to form a coating thereon and applying a particulate component to the composition. The composition is a mixture, for example, an emulsion, containing a silicone-based elastomer dispersion and droplets of a suspended leachable agent. After the elastomer is stabilized and cured, the particulate component and leachable agent are removed, resulting in an implantable member having a porous, open-cell surface texture designed to be effective in reducing incidence of capsular formation or contraction.

The invention belongs to the technical field of preparation of metal and alloy, and provides a preparation method for high-strength and high-toughness ultra-fine grain aluminium alloy. The preparation method comprises the steps that aluminium alloy is firstly cast to form a cast-state blank; then the cast-state blank is turned into an ECAP (Equal Channel Angular Pressing) blank, and then the ECAP blank is subjected to homogenization treatment and curing quenching treatment; and then the blank subjected to the curing quenching treatment is subjected to 1-8 passes of ECAP dynamic ageing treatment at temperatures ranging from the room temperature to 300 DEG C. According to the preparation method, through the ECAP dynamic ageing treatment at different temperatures, the grain size of the alloy is obviously refined; and the form and distribution of a nanometer ageing precipitated phase are more reasonable, so that the strength of the alloy is greatly improved, and meanwhile the alloy has excellent ductility and toughness.

An Al-Mg-Sc welding wire for Al-Li alloy (Al-Mg-Li) and Al-alloy (Al-Mg) contains Mg (4-8 Wt%), Mn (0.5-1.0), Zr (0.05-0.3), Sc (0.1-1.0), Ti (0.05-0.15), Na+K (0-15 ppm), H (0-0.4 ppm) and Al (rest). It has high anti-cracking performance and high mechanical performance.

The invention discloses a dandelion health care tea which consists of the following components and mass percentage of the components is: dandelion leaves: 50 to 70 percent; dandelion rootlets: 25 to 35 percent; ganoderma lucidum rootlets: 2 to 8 percent; and wild chrysanthemum: 2 to 8 percent. The invention also discloses a preparation method of the health care tea which comprises the following steps: first cleaning the dandelion, and cutting the leaves and the root off by a knife, dipping the leaves in warm water for 3 minutes and drying after cutting the leaves into lumps of 1 square centimeter; cutting the root into threads by a blanket machine and drying; cutting the ganoderma lucidum into threads by the blanket machine and drying, and drying the wild chrysanthemum directly, then the health care tea is obtained by mixing and sterilizing the raw materials according to the mass percentage. The health care tea of the invention can effectively prevent and treat hyperplasia of mammary glands at the same time when satisfying the needs of drinking tea. After drinking the health care tea, the occurrence of mammary gland diseases such as hyperplasia of mammary glands of the female can be prevented; the female who suffer from the mammary gland diseases such as hyperplasia of mammary glands can also have good treatment effect after drinking the health care tea without side effects, risk of operation or scar.

The invention discloses a 485MPa level TMCP+ tempering weather-proof bridge steel plate and a production method. The steel plate is formed by smelting following chemical components including, by weight percent, 0.05%-0.08% of C, 0.25%-0.50% of Si, 1.20%-1.40% of Mn, smaller than or equal to 0.012% of P, smaller than or equal to 0.005% of S, 0.25%-0.40% of Ni, 0.45%-0.7% of Cr, 0.25%-0.4% of Cu, 0.02%-0.08% of Mo, 0.015%-0.030% of Nb, 0.020-%-0.050% of Al, 0.040%-0.070% of V, and the balance Fe and inevitable impurities. According to the steel plate production method, molten steel is subjected to the procedures of smelting, continuous casting, heating, rolling, cooling and tempering, and then the steel plate is obtained. The large-thickness yield 485MPa level TMCP+ tempering weather-proof bridge steel plate produced through the method has the beneficial effects that the low equivalent carbon equivalent and crack sensitive indexes and the low yield ratio are achieved, the low-temperature impact strength is excellent, and the welding performance is good.

The invention discloses a solution separation preparation device for security detection on a blocky food sample. The solution separation preparation device comprises a food solution preparation tank,crushing blades, a water supply tank, a rotating shaft and a stirring centrifugal cylinder, wherein the bottom of the food solution preparation tank is fixed on a rack; a sealed inner cylinder is mounted inside the water supply tank; a water storage cavity of an annular structure is formed outside the sealed inner cylinder inside the water supply tank; a rotating shaft is arranged in the middle ofthe sealed inner cylinder inside the water supply tank in a vertical penetration manner; a plurality of crushing blades are mounted at the lower part of the rotating shaft; and a driven gear ring isconnected with the upper end of the stirring centrifugal cylinder. The solution separation preparation device is convenient and rapid to assemble, the crushing blades are rotated to crush a blocky food sample placed inside the crushing cavity, the crushed blocky food sample is mixed with water inside the crushing cavity, then a food sample solution is prepared, components to be detected in the blocky food sample can be conveniently separated out, centrifugal treatment is achieved through the stirring centrifugal cylinder, good stability is achieved, and convenience is brought to further detection treatment.

The invention discloses a pipeline steel plate with low yield ratio, fine grains and high strength and a manufacturing method thereof, and steel in the pipeline steel plate comprises the following chemical components by weight percent: 0.03-0.10% of C, 0.10-0.30% of Si, 1.20-1.80% of Mn, not more than 0.015% of P, not more than 0.005% of S, 0.040-0.060% of Nb, 0.006-0.020% of Ti, 0.10-0.40% of Cr, 0.10-0.30% of Ni, 0.010-0.050% of Al and the balance of Fe and inevitable impurities. The manufacturing method adopts a converter for smelting, adopts the TMCP (thermo mechanical control process) and the two-phase region subthermal quenching treatment at 720-750 DEG C, thereby obtaining the pipeline steel plate with low yield ratio, fine grains and high strength; and the manufacturing method has stable production process, strong operability, low cost and high performances.

Disclosed is an optimized system for more efficiently and economically producing terephthalic acid. A solvent purification system is employed to remove of at least one aromatic impurity present in a solvent purification feed. At least about 20 weight percent of the solvent purification feed originates from a cooled, post-digestion, TPA-containing slurry.

The invention relates to a hydraulic oil tank. The hydraulic oil tank comprises an oil tank body. A cover plate is arranged on the oil tank body. An oil suction pipe, an oil return pipe and an oil filling pipe are arranged on the cover plate, a filter screen is arranged on the inner wall of the cover plate, and the opening, located inside the oil tank body, of the oil return pipe is formed in the filter screen. A precipitation tank is arranged at the bottom of the oil tank body, the upper end face of the precipitation tank is lower than the bottom surface of the oil tank body, and a closing plug is arranged on the lower end face of the precipitation tank. A first partition plate and a second partition plate are arranged in the oil tank body and fixed to the inner wall of the oil tank body. The hydraulic oil tank has the advantages of being good in filtering effect, capable of effectively discharging impurities in hydraulic oil and preventing the impurities from flowing in the hydraulic oil and the like.

The invention discloses a subway station deep foundation pit excavation construction method, wherein the upper portion of an excavated foundation pit is a sandy gravel stratum, and the lower portion of the excavated foundation pit is a mud rock stratum. The method includes the steps of 1, precipitation construction, wherein precipitation construction is conducted on the sandy gravel stratum through a precipitation well and 2, foundation pit excavation, wherein the foundation pit excavation includes the following steps of foundation pit partition and foundation pit earthwork excavation; the excavated foundation pit is divided into a plurality of small foundation pit bodies to conduct excavation respectively; the small foundation pits comprise first foundation pit bodies and second foundation pit bodies; excavation is conducted on the divided small foundation pit bodies; an open-cut method is adopted for the first foundation pit bodies and the second foundation pit bodies; the first foundation pit bodies are supported by fender posts, reinforced concrete supports and steel pipe inner supports; the second foundation pit bodies are supported by the fender posts, pre-stressed anchor cables and the steel pipe inner supports. The subway station deep foundation pit excavation construction method is simple in step, reasonable in design, convenient to construct, faster in construction process, good in construction effect and capable of easily conveniently and fast to finish deep foundation pit excavation construction process, and the influences on the surrounding environment by the excavation construction process are smaller.

The recovery of solids, and particularly solid particulates used as catalysts in slurry hydroprocessing, from asphaltene containing hydrocarbons is improved by controlling asphaltene precipitation. The formation of agglomerates of the solid particulates, having an increased diameter, results in the presence of precipitated asphaltenes, possibly due to flocculation. Asphaltene precipitation is controlled by varying process parameters or introducing additional diluent or flush streams that change the polarity of an asphaltene containing liquid product recovered from an effluent of a slurry hydroprocessing reaction zone.

Process for the preparation of a starch ester, in particular a starch acetate, wherein a starch-based feedstock is reacted with an organic carboxylic acid anhydride in the presence of a catalyst. The reaction of the starch-based feedstock and the anhydride is performed at an excess pressure of about 0.1 to 50 bar in an essentially anhydrous medium containing 10% by weight of water at the most. As catalyst, sodium acetate, sodium hydroxide or sulphuric acid is used, and as the reaction medium, acetic acid or excess acetanhydride is used. By means of the invention, the duration of the esterification reaction can be significantly shortened, the separation of the product can be facilitated, and the recirculation of the waste solutions can be rendered more efficient.

The invention discloses a hot-rolled 400MPa grade high-strength steel bar for reinforced concrete and a production method for the steel bar, and belongs to the technical field of micro-alloying of ferrous metallurgy. The steel in the steel bar comprises the following chemical components in percentage by weight: 0.16 to 0.25 percent of C, 0.20 to 0.80 percent of Si, 1.20 to 1.50 percent of Mn, 0.02 to 0.06 percent of Ti, less than or equal to 0.01 percent of N, less than or equal to 0.045 percent of S, less than or equal to 0.045 percent of P, and the balance of Fe and inevitable impurities. The preparation method for the steel bar comprises the following steps of: a, smelting crude molten steel, tapping, deoxidizing and alloying; b, refining, finely regulating the components, and pouring; and c, hot rolling, wherein titanium is alloyed in the tapping process and after deoxidizing or in the refining process. By using the principle that the titanium plays a role in precipitation and reinforcement in the steel, the mechanical properties of the steel such as yield strength and tensile strength are improved, and the property requirement of the 400MPa grade high-strength steel bar is met..

An electroless copper plating solution which can ensure superior adhesion of a copper plating film to a flat ceramic surface having low roughness and which can form a high-frequency electronic component having superior high-frequency conductivity and a high Q value is provided. Also provided is a high frequency electronic component formed by using this electroless copper plating solution. The electroless copper plating solution of contains copper ions, nickel ions, formaldehyde or a derivative thereof, and tartaric acid or a salt thereof. The ratio of the content of the nickel ions to that of the copper ions on a molar basis is in the range of about 0.0001 to 0.015.

The invention discloses a Cu-Fe in-situ composite with boron, silver and rare earth elements added and a preparation method thereof. The invention is characterized by adopting multimode comprehensive strengthening technology such as multi-micro alloying, solid solution strengthening, aging strengthening, fine grain strengthening, distortion strengthening, fiber strengthening and the like, using Cu as the base and adding a little Fe and trace Ag and B, rare earth or rare earth compounds to prepare the high strength and high conductivity copper alloy material through smelting, casting, hot forging or hot rolling, solid solution treatment, cold rolling or cold drawing, aging and the like. The prepared material has the advantages of high strength, good electric and thermal conductivity, simple preparation process and low cost, thus realizing wide application in the fields such as electronics, information, transportation, energy, metallurgy, electromechanics and the like.

The invention provides a preparation method of an Al-Cu-Mg-Ag ultrafine crystal heat-resistant aluminum alloy, comprising the following steps: hot extrusion, solid solution hardening, equal channel angular pressing and ageing treatment, thus finally improving the heat resistance of Al-Cu-Mg-Ag alloy. The specific steps are as follows: homogenizing annealing of the as-cast aluminum alloy, hot extrusion with the extrusion ratio of 8-15, multi-pass equal channel angular heat extruding deformation at the temperature of 350-430 DEG C, solution treatment, hardening in water at a room temperature, and then ageing treatment at the temperature of 150-210 DEG C; or solution treatment of the alloy in a hot extrusion state, hardening in water at the room temperature, multi-pass equal channel angular heat extruding deformation at the room temperature and then ageing treatment. The process method of the invention can improve the heat resistance of the Al-Cu-Mg-Ag alloy and enlarge the application range of the aluminum alloy on the basis of the existing alloy. The preparation method of the invention has simple process and convenient operation, and can effectively refine crystal particles of the Al-Cu-Mg-Ag alloy, improve the density of a precipitated and strengthened phase, enhance the overall strength and the high-temperature heat resistance of the Al-Cu-Mg-Ag alloy, and achieve industrialized production and application.