95results about How to "Does not affect nature" patented technology

The invention discloses a method for preparing liquid wax. The method comprises the following steps: using straight run diesel oil fractions as raw materials, and adding an additive (alpha-alkene or pentaerythritol), wherein the adding amount of the additive is 50-2,000 mg/g; adopting a paraffin sweating tank connected with a circulating refrigeration/heating system, filling the raw materials containing the additive in the paraffin sweating tank, then starting a refrigeration system, cooling to 10 to -40 DEG C, wherein the temperature is lower than the freezing point of the liquid wax by 15-30 DEG C, and keeping the constant temperature for 4-8 h; starting a heating system to rise the temperature to be lower than the freezing point of the liquid wax by 3-10 DEG C, keeping the constant temperature for 1-8 h, rising the temperature and keeping the constant temperature, at the same time, discharging noncondensing liquid hydrocarbons from the paraffin sweating tank, and finally heating the paraffin sweating tank to melt a solid to be discharged to obtain the liquid wax product. Compared with the prior art, the method has the advantages of simple process, low energy consumption, no environmental pollution, and the like.

The invention discloses a method for preparing silicon-based oxynitride fluorescent powder, which comprises the following steps of: weighing corresponding raw materials and silica powder based on stoichiometric proportion of each element in the chemical formula of the silicon-based oxynitride fluorescent powder, after uniformly mixing the raw materials and the silica powder, raising the temperature to 800 to 1,000 DEG C under any one of the conditions of condition a to condition c, performing reduction reaction under the condition c or the condition d, and cooling the reaction product to roomtemperature to obtain the silicon-based oxynitride fluorescent powder, wherein the condition a is vacuum; the condition b is the atmosphere of inert gases; the condition c is the atmosphere of nitrogen-containing gases; and the condition d is the atmosphere of reductive gas. The silicon-based oxynitride fluorescent powder doped with various luminescent ions and prepared by the method has bright fluorescence under the excitation of ultraviolet ray, near ultraviolet or visible light. The method has the advantages of low preparation temperature of the product, high phase purity of the product, controllable particle size of the product, good luminous intensity of the product, low cost, simple process and the like, and is easy to enlarge industrialization.

The invention discloses a preparation method of a high-purity aluminum oxide ceramic. According to the preparation method, a nano Al2O3 coating formed on the surfaces of aluminum oxide particles is used as a sintering aid to ensure that a small amount of the sintering aid can be uniformly dispersed in a main phase, so that uniform adding of a small dose of the sintering aid is realized. The preparation method not only ensures the purity and performance of the high-purity aluminum oxide ceramic and meets process requirements for preparation of the aluminum oxide ceramic, but also effectively solves the problem that when the particle size difference of main phase powder and the sintering aid is large, particles of a nano auxiliary agent are gathered in a main phase powder particle gap; and moreover, partial over-firing is avoided, so that the uniformity of sintering of the main phase powder particles and the sintering assisting effect of the sintering aid are effectively improved.

The invention relates to a preparation method of an ABO/RhD blood group antigen detection reagent card. Eight microcolumn gel tubes are arranged on the detection reagent card, wherein two gel tubes contain gel and anti-A monoclonal antibodies with an immunoglobulin m (IgM) property, two gel tubes contain gel and anti-B monoclonal antibodies with the IgM property, two gel tubes contain gel and anti-D monoclonal antibodies of RhD blood type with the IgM property, and two gel tubes contain a gel suspending medium buffer solution and gel.

The invention relates to a fire pre-processing method for a low-grade lateritic nickel ore which belongs to the field of nonferrous metal. The method includes following steps : the low-tenor lateritic nickel ore mine is cracked; vulcanization pre-processing is carried out; a metal sulfide is generated; the ore concentrate and the tailing of the nickel purite can be obtained through carrying out one time roughing, four time choiceness and three time scavenging on the preprocessed lateritic nickel ore and returning the middling ores in sequence; under a magnetic field intensity of 6000 to 10000 oersted, one time open roughing and three time open choiceness are carried out on the flotation tailing; a magnetic product is iron ore concentrate; the rest products are combined into the total tailing. The technology of the invention has the characteristics of high material suitability, short flow, good vulcanization effect, device investment saving, low production cost, and the like, thus leading the subsequence beneficiation techniques to be greatly simplified and being capable of producing the mixed ore concentrate of nickel and cobalt, the iron ore concentrate and the tailing as well as obtaining a higher metal ore concentrate grade and a high recycling rate.

The invention discloses a purification method of ultrasound assisted HF (hydrogen fluoride) washing battery-grade graphite fluoride. The method comprises the following concrete steps of: mixing common graphite fluoride and 20% hydrofluoric acid uniformly; cleaning for 30-60 minutes under ultrasound assistance, and dissolving impurities fully; and then leaching the system above, placing a filter cake in a heat furnace of 150-200 DEG C and drying, thereby obtaining graphite fluoride meeting the battery-grade requirement. The purification method of ultrasound assisted HF washing battery-grade graphite fluoride provided by the invention is not only simple and convenient in process, is low in cost, but also is wide in application range, and is favor of industrial production.

The invention belongs to the field of medical material modification and specifically relates to an antibacterial property modification method of medical silicone rubber. According to the antibacterial property modification method of silicone rubber, Ag ions are injected into silicone rubber by an ion implantation method so as to obtain the antibacterial silicone rubber. Ion energy of the Ag ions is 10 keV. Injection control conditions of the ions are as follows: ion beam flux density is not more than 1mA/cm<2>, and remnant air pressure is not more than 1*10<-4>Pa. the operation conditions of the method are easy to control; operation steps are simple; and defects such as stripping, poor stability, tedious operation technology and the like existing in plasma processing, graft copolymerization, biomimetic coating and the like in the current surface modification technologies are overcome. In addition, substrate temperature of silicone rubber can be controlled by the method, and properties of the silicone rubber material itself are not influenced. Hydrophilic-hydrophobic property of the silicone rubber obtained is also obviously changed into hydrophilicity. It is verified through cell experiments that biocompatibility of silver ion-injected silicone rubber is also remarkably raised in comparison with biocompatibility of common silicone rubber.

The invention relates to a broad spectrum antihuman globulin reagent assay card and preparation thereof. The assay card is provided with 8 microcolumn gel tubes, wherein broad spectrum IgG (immunoglobulin globulin) and C3D antibody reagents are contained in 8 microcolumn gel tubes.

The invention provides a manufacturing method of compound steel, which comprises the following steps: leveling a steel plate and matrix steel, removing an oxide layer on the binding surface of the required steel plate and the matrix steel, and decontaminating so that the binding surface is smooth and flat; superposing the steel plate and the matrix steel, wherein the contact area of the binding surface of the required steel plate and the matrix steel reaches 100%, and no air exists on the binding surface; welding and fixing the transverse seams of the binding surface to obtain a blank; and heating the blank to 950-1000 DEG C in a furnace for 20-30 minutes so that the temperatures inside and outside the blank are uniform, rolling in a hot-rolling mill, and carrying out stress relief annealing by a conventional method, thereby obtaining the compound steel of the invention. The invention has the advantages of simple manufacturing technique, is easy to realize the industrial production and high yield, and enables the yield of compound steel to reach 100% due to the realization of non-oxidation manufacture in the compounding process.

The invention provides a method for removing endotoxin in protein. The method adopts a sequential combination of chromatography, ultrafiltration and common filtration, and accords with a protein purification process flow. With the method, protein purification is realized while endotoxin is effectively removed, and the properties of protein is not influenced. The method is especially suitable to be used in treating various genetically engineered bacteria expressed intracellular and extracellular proteins. With optimized designs of the conditions of filtering mode, filtering pressure, membrane pore size and the like, operation steps and operation time are simplified, such that production cost is reduced, and processing capacity is improved. With the method provided by the invention, the endotoxin content can be reduced to an animal clinical application standard range, and the properties of the product is not influenced while the endotoxin is removed. The method is suitable for large-scale productions and applications.

The invention discloses a preparation method of trepang oral liquid without fishy smell. The preparation method comprises the steps of removing substances with fishy smell, such as urea, amine and low molecular acid, by adopting a boiling water scalding method, smashing trepang, then adding papain, compound protease and gingerol for mutual enzymolysis, enabling components with fishy smell, such as aldehyde and ketone, to make oxidation reaction, aldolization reaction or esterification reaction, so as to weaken peculiar smell, adding extracting solutions of apple and hawthorn into obtained enzymatic hydrolysate, neutralizing substances with fishy smell, such as methanthiol, by using organic acid in the extracting solutions, and then seasoning by using extracting solutions of medlar, momordica grosvenori and corn. The method is simple, the effect is remarkable, effective components of a product are not affected, most substances with fishy smell are removed, and the oral liquid is better in mouthfeel and low-cost, and meets the requirement of large-scale production.

The invention relates to the technical field of polymer materials, and discloses an aliphatic polycarbonate dibasic alcohol and a preparation method thereof. The preparation method of the aliphatic polycarbonate dibasic alcohol comprises the following steps: carrying out ester exchange reaction on polymethylethylene carbonate and an aliphatic dibasic alcohol under the condition of a catalyst, and removing impurities, wherein the molecular weight of the polymethylethylene carbonate is greater than 10000Da. The molar weight of the aliphatic dibasic alcohol accounts for 15-100% of that of the polymethylethylene carbonate. The catalyst accounts for 0.01-5% of the molar weight of the polymethylethylene carbonate. The ester exchange reaction is performed by heating to 80-180 DEG C in an inert gas atmosphere and refluxing for 1-30 hours. The invention provides a method for preparing low-molecular-weight aliphatic polycarbonate dibasic alcohol from high-molecular-weight polycarbonate, and widens the applicability of the high-molecular-weight polycarbonate. The molecular weight of the aliphatic polycarbonate dibasic alcohol and the hydroxy functional group degree can be adjusted according to needs, and the primary product of the aliphatic polycarbonate dibasic alcohol is easy for impurity removal.

The invention provides a method for nondestructive testing of source rock water content based on magnetic resonance imaging, which includes steps of a, sequence selection: using a magnetic resonance imaging analyzer, and applying an S-MGE sequence to selectively collect a signal of proton in hydrone in a source rock sample, wherein the collecting process of the S-MGE sequence includes steps of applying multiple impulses at 90 degrees to magnetic resonance imaging signals of all hydrogen cores of a saturated source rock sample to form an exciting echo during the recovery process of the magneticresonance imaging signals of the hydrogen core, so as to acquire magnetic resonance imaging relaxing information of the hydrogen core in a water molecule in the source rock sample; finally, acquiringthe magnetic resonance imaging signal intensity of the hydrogen core in the water molecule in the source rock sample; b, building a standard curve; c, testing water content in the to-be-tested sampleof the source rock; d, calculating the water content of the to-be-tested sample of the source rock.

The invention discloses a preparation method of a fusible multilayer composite asphalt filling bag. The method is characterized in that the method comprises the following steps: utilizing polyolefin, a modified polyolefin material and a compounding agent to prepare a fusible multilayer composite asphalt filling bag film blowing material, carrying out blow molding of the film blowing material and processing master batches through adopting a film blowing set to form a fusible multilayer composite asphalt filling bag body having a thickness of 20-100mum, and carrying out slitting and heat sealing to prepare the fusible multilayer composite asphalt filling bag. The processing master batches are a fusion compound comprising a polyethylene resin and a processing assistant. The fusible multilayer composite asphalt filling bag has the characteristics of high temperature filling resistance, realization of complete mixed fusion with asphalt, no edge leakage, no seepage, high heat sealing strength, wide range of the use temperature, ultraviolet resistance, weather resistance, strong designability, and relative low price. The fusible multilayer composite asphalt filling bag is used for the high and low temperature filling of pavement asphalt and various modified asphalts, and can be widely used in the petroleum field and the building field.

The present invention relates to a kind of acid water preparing process. Neutral water or its vapor is set inside plasma generator, and DC or AC voltage of 300-5000 V is applied across the electrodes for reaction of 10-300 min. The plasma generator may be one of dielectric blocking discharge or corona discharge. The acid water prepared through the plasma process has conductivity 10-2000 times higher than that of common water, and pH value up to 1.89. The acid water may be preserved for long period and has property not affected by freezing and heating. The acid water may be used as efficient and clean acid to replace inorganic acid with serious pollution for wide use.

A defoaming device and a defoaming method for removing foam of drilling fluid by means of linkage of negative pressure and thermal radiation belong to the technical field of physical defoaming of drilling fluid. The device comprises a cylinder tank body and is characterized in that a thermal radiation part is arranged in the tank body, a vacuum pump and a water pump are connected to the outer side of the tank body, and the whole set of device comprises a pressure sensor, a temperature sensor, a liquid level sensor, and the like. The core thought of the device provided by the invention is to adopt the mode of combining the negative pressure and thermal radiation technologies. Firstly, the foam is guided into the closed tank body, a container is vacuumed by the vacuum pump to make internal and external pressure difference for the foam, in addition, the thermal radiation part is used to heat to enable the gas in the foam in the tank body to expand, then the foam is rapidly removed under the actions of the vacuum pump and the thermal radiation part, and the foam base solution and solids carried by the foam are discharged from a liquid and slag discharge port. According to the defoaming device, a large amount of foam discharged from foam drilling is quickly removed, the foam is prevented from being accumulated in a mine field, and the foam base solution is not affected and can be recycled.

The invention discloses a liquid-phase sugar nano tellurium and a preparation method thereof. The liquid-phase sugar nano tellurium is a compound of sugar and nano tellurium obtained by reacting tellurite aqueous solution with the sugar by heating in the present of a reducing agent. The method comprises the following steps: adding the sugar to the tellurite solution, adding the reducing agent which is 50-100 times of the molar weight of the tellurite, and heating for reacting to obtain a product. The method is simple and feasible, and is applicable to industrialized production. The obtained product is more stable at normal temperature, thus realizing the storage of a nano tellurium elementary substance in a liquid phase, greatly widening the application range of the existing solid nano tellurium and reducing the use restriction thereof.

The invention discloses a technology for producing a hard alloy woodworking blade by means of fine-particle return scraps. The technology comprises the following steps that S1, the fine-particle return scraps produced in the bar production process are recycled and dewaxed; S2, the return scrap treated in the step S1 are added into a rotary mill with hard alloy serving as a grinding body; and S3, spray particles are formed through a precision press and sintered in a pressure sintering furnace. The dewaxing technology is adjusted, so that it is guaranteed that dewaxing is carried out completely, and the property of the fine-particle return scraps is not influenced; the proper ball milling carbon addition technology is determined; by means of testing of the forming performance of various forming agents, a pressing test is carried out, the proper forming agents are screened out, and it is ensured that the pressing performance of a hard alloy woodworking cutter produced through the fine-particle return scraps is stable, and the forming agents are reasonable in ratio; and the wear resistance and heat resisting strength of the hard alloy woodworking blade manufactured through the technology are remarkably improved, hardness is reasonable, and the manufacturing cost is greatly reduced.

The invention discloses an MOS transistor forming method, and the method comprises the steps: firstly carrying out the dry etching of active regions at two sides of a grid structure and forming bowl-shaped grooves; secondly corroding a semiconductor substrate through employing HF acid solution, and then corroding the bowl-shaped grooves through employing alkaline solution to form sigma grooves, wherein a modified region is formed on the surface of a shallow trench isolation structure playing a role in isolating the adjacent active regions at least before the HF acid solution corrodes the semiconductor substrate. Therefore, the modified region can avoid the corrosion of the shallow trench isolation structure when the HF acid solution corrodes the semiconductor substrate, thereby avoiding a condition that a material is still filled ion a conductor source-drain region formed at the placed of the corroded removed shallow trench isolation structure when a hold appears on the shallow trench isolation structure or a pressure stress material or a pull stress material is filled in the sigma grooves so as to form the source-drain region, finally improving the insulation of the shallow trench isolation structure, and avoiding mutual interference between the manufactured adjacent MOS transistors.

The invention discloses a method for extracting antofine. The method comprises the following steps of: crushing a cynanchum komarovii raw material, adding 0.5 to 1 percent aqueous solution of hydrochloric acid or sulfuric acid, extracting, regulating the pH of the extract to be between 7.5 and 8.5, adding an ultra-filtration membrane for ultra-filtration, adding a nano-filtration membrane for nano-filtration, regulating the pH of the concentrate to be between 9.5 and 11, extracting the concentrate by using chloroform, separating the concentrated extract by adopting preparative liquid chromatography, performing ultraviolet on-line detection, collecting the target component, drying the target component at a low temperature, and thus obtaining the antofine product. The method is low in energy consumption, low in pollution and high in product content (which can reach over 95 percent), is suitable for small experiments, and can also be used for industrialized production.

The present invention discloses a method for comprehensive oil gas recovery, including an oil gas absorption process and a rich absorbent regeneration process. Commercial diesel oil is used as the oil gas absorbent for the oil gas absorption process. The temperature of the absorbent entering an absorption tower is -20 to 20 DEG C. The oil gas is compressed to 0.2-1MPa via a liquid ring compressor. The liquid ring compressor-pressurized oil gas exchanges heat with the rich absorbent discharged from the absorption tower for cooling. Oil gas condensed to be liquid phase is recovered, while un-condensed oil gas is fed into the absorption tower and in countercurrent contact with the absorbent in the absorption tower. The rich absorbent absorbed the oil gas is discharged from the absorption tower; and is desorbed after being heated via heat exchange. Commercial diesel oil is used as operating fluid for the liquid ring compressor, and the operating fluid is once-through. The operating fluid discharged from the liquid ring compressor, together with the rich absorbent discharged from the absorption tower, is desorbed by means of appropriate vacuum, and then is fed into a commercial diesel tank. Compared with the prior art, the method of the present invention has advantages of a reasonable technological process, high oil gas recovery efficiency, low investment in equipment and operating costs, etc.

The invention discloses a preparation method of sinomenine, which comprises the following steps: crushing the stems and leaves of dried pueraria puerariae, adding 0.5-1% hydrochloric acid or sulfuric acid aqueous solution to extract, adjusting the pH of the extract to 7.5-8.5, adding an ultrafiltration membrane for ultrafiltration, Then add nanofiltration membrane and nanofiltration, adjust the pH of the concentrated solution to 9.5-11, extract with chloroform, concentrate the extract, and then use preparative liquid chromatography to separate, ultraviolet on-line detection, collect the target components, and dry at low temperature to obtain the sinomenine product . The invention has low energy consumption, less pollution and high product content, which can reach more than 98%, and is not only suitable for small-scale experiments, but also can be used for industrial production.

A semiconductor device forming method comprises steps: a substrate is provided, and a gate dielectric layer and a pseudo gate; an interlayer dielectric layer flush with the pseudo gate is formed on the substrate; ion doping is carried out on the surface of the interlayer dielectric layer so as to form a doping layer on the surface of the interlayer dielectric layer; the gate dielectric layer and the pseudo gate are removed; and a gate electrode structure is formed at the pseudo gate position. The invention also provides a semiconductor device, which comprises the substrate, the gate electrode, the interlayer dielectric layer and an isolation layer arranged on the surface of the interlayer dielectric layer. The semiconductor device and the forming method thereof have the beneficial effects that through carrying out ion doping on the surface of the interlayer dielectric layer and the surface of the exposed pseudo gate and forming the doping layers on the surface of the interlayer dielectric layer and the surface of the pseudo gate, the doping layers can well block influences on the interlayer dielectric layer by the subsequent pseudo gate removal step, surface losses of the interlayer dielectric layer are further reduced, and the height of the gate electrode formed subsequently can be ensured.