84results about How to "Overcoming reactivity" patented technology

The invention discloses a manufacturing method of a multilayer shell-core composite structural part, which comprises the following steps of: (1) respectively preparing feed for injection forming of a core layer, a transition layer and a shell layer, wherein powder in the feed of the core layer and the powder in the feed of the shell layer are selected from one or a mixture of some of metal powder, ceramic powder, or toughened ceramic powder and are different from each other, and the powder in the feed of the transition layer is gradient composite powder; (2) respectively manufacturing blanks of the multilayer shell-core composite structural part layer by layer with a powder injection forming method; (3) degreasing the blanks; and (4) sintering the blanks to obtain the multilayer shell-core composite structural part. The multilayer shell-core composite structural part is manufactured with the powder injection forming method, and has the advantages of high surface hardness, abrasion resistance, uniform thickness of the shell layer, stable and persistent performance, strong binding force between the shell layer and the core layer due to the transition layer, good integral bending strength and good impact toughness and is difficult to crack.

The invention discloses a preparation method of magnetic / gold nano particles. The preparation method comprises the following steps: firstly adopting a co-precipitation method to prepare the magnetic Fe3O4 nano particles; polymerizing the dopamine in-situ on the surfaces of the magnetic particles to obtain Fe3O4 nano particles modified by the poly dopamine; introducing polyphenol and amino groups to the surfaces of the Fe3O4 nano particles; absorbing the nano gold seeds on the surfaces of the modified magnetic particles through the static action; adopting the nano gold which is absorbed on the surfaces of the magnetic particles as the seed, adopting the polyphenol on the surfaces of the magnetic particles as a reducing agent, gradually adding the chloroauric acid liquid to gradually produce the gold layers on the surfaces of the magnetic particles to obtain the core-shell magnetic / gold nano particles. The nano particles have good water dispersion and strong magnetic respond performance. The diameters of the nano particles are 30-100 nanometers, the saturation magnetization is 30.1-38.7emu / g, and the nano particles are superparamagnetic. The nano particles have wide application prospect on the fields of targeted drug controlled release, thermal therapy, separation of protein and enzyme, etc.

The invention discloses a bandwidth control method based on software-defined networking and oriented to different types of flow. By means of the method, the different types of flow are identified, intelligent bandwidth allocation schemes are provided, and the problems that as for a traditional method, control is complex and response is slow are solved. Under a SDN framework, bandwidth control of the whole network is achieved through a controller, an implementation process is simple and efficient, the bandwidth utilization rate is increased effectively, differential bandwidth allocation is provided intelligently, and the bandwidth control method is applied to bandwidth control oriented to the different types of flow in the SDN.

The invention belongs to the biotechnology field, and in particular relates to escherichia coli TolC antigen and antibody. The antibody has the specificity aiming to a sequence shown by SEQ ID NO:1. The invention also provides a gene sequence for encoding the escherichia coli TolC antigen and application of the antibody to preparing a drug for inhibiting the bacterial resistance. The anti-TolC fragment SNGYRDANGI antibody enhances the sensitivity of bacteria to antibiotic and can specifically and efficiently inhibit the functions of drug resistance outer membrane protein of escherichia coli, thereby solving the problem of the bacterial resistance. Compared with the traditional antibody, the antibody has higher safety and operability on the application of the bacterial resistance drug.

The invention relates to a double antibody latex enhanced retinol binding protein detection kit. More specifically, the invention discloses a double antibody coating latex enhanced immunoturbidimetry kit for detecting retinol binding protein. The kit contains a reagent 1, a reagent 2 and a calibrator. Paring monoclonal antibody A and B are respectively coated on latex particles. Coated antibody is bonded with RBP to be detected, and a plurality of bonders are aggregated together to form detectable turbidity change. The detection kit provided by the invention has high sensitivity, can be used to detect urine samples and serum samples and can be used as nutritive index to detect RBP in serum. Simultaneously, through the detection of RBP in urine, the kit is sensitive to the damage degree of renal proximal tubule.

The invention breaks through the restriction of the traditional autotrophic nitrification and anoxic denitrifying metabolism principle, and discloses a method for removing carbon and nitrogen pollutants in waste water in one step according to physiological feature and metabolism principle of heterotrophic nitrification-aerobic denitrification bacteria. In a single biochemical reactor, mixed solution of the heterotrophic nitrification-aerobic denitrification bacteria and active slurry in a certain proportion is inoculated, after a certain period of aeration is performed, nitrogen and organic substances are removed at the same time, and the efficiency of denitrification and carbon removal is high. By using the method, a traditional biochemical treatment system can be updated and transformedwithout constructing a new building based on the traditional biochemical treatment system, and the operation is convenient and fast. The method overcomes the bottleneck problems that the nitrobacteria propagate slowly, the nitrification and denitrification reactions are performed in sections, and the like.

The invention relates to biomass supercritical and subcritical combined continuous type pretreatment and hydrolysis equipment and a method. The equipment comprises a water storage tank, a material storage tank with a stirring device, a preheating system, a supercritical reaction system, a primary cooling system, a subcritical reaction system, a final cooling system, a product collection system and an electronic temperature controlling system. The method comprises the following processing steps: water reaching preheat temperature and biomass material paste are rapidly mixed and then injected into the supercritical reaction system to be pretreated under supercritical condition; the reaction product is cooled through the primary cooling system and depressurized through a pressure reducing valve and then enters into the subcritical reaction system to be hydrolyzed sequentially, therefore fermentable sugars are continuously generated and collected. The invention utilizes the advantages of the supercritical method that the reaction is rapid, activator is not required and product inhibition does not exit, realizes that the continuous hydrolysis conversion of wood fiber biomass can generate fermentable sugars, is the foundation of subsequent resource recovery technologies, such as ethanol production by fermentation and the like, and has wide application prospect.

Electromagnetic cooker includes shell body, bedplate, heating coil, control board, bracket, heat elimination mechanism, and temperature sensing unit. Temperature sensing unit on middle part under the bedplate adopts magneto-dependent sensor. Beign fixed under the bedplate by bracket, the magneto-dependent sensor is in use for receiving magnetic signal sent from temperature sensing magnet steel of sensing heat conduction of pan bottom at setting temperature point. Thus, based on sensed signal, the magneto-dependent sensor can switch programs controlled by temperature. The electromagnetic cooker can design accurate automatic control program so as to reach effect of automatic electric cooker without need of taking charge for cooking rice. The electromagnetic cooker possesses advantages of accurate and timely detection.

The invention belongs to the technical fields of preparation and application of metal optical function nano materials and in particular relates to a fluorescent silver nanocluster as well as a simple preparation method and application thereof. The fluorescent silver nanocluster is synthesized by reacting soluble silver salt with a stabilizer, wherein the fluorescent silver nanocluster has the mean particle size of more than 1.5nm and less than 2nm; the fluorescence emitted by the fluorescent silver nanocluster has the wavelength of 610nm under excitation of light with the wavelength of 510nm; the emitted fluorescence has high illumination stability. The method is readily available in raw materials, simple in process, convenient to operate, low in biotoxicity and easy to popularize and apply. The synthesized fluorescent silver nanocluster can be applied to the fields of optical imaging, biological markers, biological or chemical sensors and the like, and especially can be used for qualitative and quantitative detection on the activity of alpha-L-fucosidase.

The invention discloses a method for preparing super active carbon by taking biomass power plant ash as a raw material. A particular preparation process is as follows: the biomass power plant ash is boiled by alkali and then is filtered to filter insoluble substances; a hydrochloric acid solution is added into the insoluble substances; impurity removal and water washing are carried out to obtain an active carbon precursor, namely residual carbon; the residual carbon is heated and activated in the atmosphere of water steam and CO2 to obtain a middle product; then the middle product and NaOH are mixed to be heated and activated in the atmosphere of N2; an activated product is washed and dried to obtain the super active carbon. The method takes wastes of a biomass power plant as raw materials and utilizes the NaOH with a low price to replace KOH with the high price, so that the wastes are changed into valuable things to obtain the active carbon with a high additional value for a super capacitor.

The present invention relates to the autocontrol in oil and gas exploitation and the microcomputerized autocontrol system incldues: pressure sensor to measure the pressure inside the vertical pipe and the casing, displacement sensor to measure the opening of the hydraulic throttle valve, pump stroke sensor to measure pump stroke, gas flowmeter to measure the flow rate of separated gas, filter andamplifier to process to collected signals, A / D converter, microcomputer for record, storage, calculation data display and issuing control commands for regulation. The system completes the microcomputerized autocontrol of throttle pressure in underbalance well drilling and realize precise control.

The invention discloses a method for preparing a B4C-Al neutron-absorbing plate for spent fuel storage and transportation, which is implemented by adopting a frame rolling technique through the following steps: firstly, uniformly mixing a certain amount of B4C powder and Al matrix powder; then, carrying out mould pressing on the obtained mixture so as to obtain a compact green core body, sintering the compact green core body in a vacuum furnace, putting the sintered core body into an aluminum alloy frame, and sealing the aluminum alloy frame; and finally, rolling to obtain a plate. The process for preparing the neutron-absorbing plate is simple, the B4C is uniformly distributed into an Al matrix, and the B4C and the Al matrix have a good interfacial bond. The neutron-absorbing plate prepared by using the method disclosed by the invention is suitable for being used as a neutron-absorbing material in spent fuel tanks and transportation containers, thereby controlling the critical safetyof the spent fuel.

The invention relates to the field of nanometer materials, and discloses a silicon dioxide nanofiber membrane, and a preparation method and application thereof. The method comprises the following steps: (1) preparing spinning solution containing nanosilicon dioxide, a surface active agent, a high-molecular polymer and solvent, and (2) processing the spinning solution prepared in step (1) by utilizing electrospinning technique, and drying to obtain the silicon dioxide nanofiber membrane, wherein the average grain diameter of the nanosilicon dioxide in step (1) ranges from 20nm to 120nm. The fiber diameters of the silicon dioxide nanofiber membrane which is prepared by the method provided by the invention range from 80nm to 600nm; the thickness is small; therefore, the bore diameter and specific surface area of the silicon dioxide nanofiber membrane are relatively large; the surface energy and surface activity are high; the silicon dioxide nanofiber membrane provided by the invention can be applied into an RNA (ribose nucleic acid) extraction kit adsorbing column, and has the advantages that the extraction scope and category are wide, the extraction is rapid, simple and convenient, the purification rate is high, and the ratio of performance to price is high.

The invention provides a breast protection membrane for preventing dairy cow mastitis and a preparing process of the breast protection membrane. The breast protection membrane is prepared from membrane forming agents, thickening agents, povidone iodine, a wetting agent, skin moisturizing agents and purified water according to a composition proportion being (0.3 to 1):(0.3 to 1):(0.5 to 5):(0.05 to 0.15):(6 to 15):(92.85 to 77.85), wherein the membrane forming agents select hydroxyethyl cellulose, hypromellose, methylcellulose, polyvidone and sodium carboxymethyl cellulose; the thickening agents select xanthan gum, guar gum and carrageenin; the wetting agent selects docusate sodium; and the skin moisturizing agents select glycerol and propylene glycol. The breast protection membrane has the characteristics that the formula has small irritation on the breasts of dairy cows; the action is mild; the bacteriostatic effect is high; the dripping phenomenon on the nipples of the dairy cows seldom occurs; and the cost is low, and the like. The process operation is simple; raw materials can be easily acquired; and the breast protection membrane is suitable for large-scale production.

The invention relates to a process for synthesizing calcium zirconate by a liquid-phase and solid-phase mixed calcination method. The process comprises the following steps of: 1, mixing zirconium carbonate or zirconium hydroxide and CaCO3 or Ca (OH) 2 in a metallic oxide molar ratio of 1:1.0-1.2 by using refined water; 2, performing centrifugal separation and dehydration on the slurry; 3, loading the dehydrated mixture into a quartz crucible, feeding the quartz crucible into a tunnel kiln of which the central highest temperature is between 850 and 1,200 DEG C, and slowly warming up; and 4, discharging, cooling, crushing, and packing to obtain finished products. The moisture content of the dehydrated materials is between 40 and 50 percent. By the process, the defects of nonuniform mixing, incomplete reaction, nonuniform particles and super high energy consumption by a dry method are overcome, and the process problems of difficulty in cleaning impurities, a large amount of wastewater, drying and the like by a wet method are solved. The whole production process has short flow and simple equipment, is easy to operate and control, is suitable for large-scale production, and has high product quality and lower cost.

The invention relates to the clone of amidohydrolase, and the construction, zymoprotein expression and industrial application of engineering bacteria, belongs to the field of bioengineering technology and mainly aims to solve the problems that amidohydrolase produced by natural bacteria is low in enzyme activity, low in bacterial concentration and difficult for production application. On the basis that the hydrolase is produced by fermenting Delftiatsuruhatensis in Delftia, an amidohydrolase gene is cloned to establish a full set of process of the fermentation, and inducible expression, and industrial production of the Escherichia coli gene engineering bacteria. Through the gene engineering modification, the amidase activity is over 3000 u / l, much higher than 300 u / l of the original strain; the actual application shows that the enzyme has a wide application scope, can be applied the production of side chains of statins, the production cost is greatly reduced and the realization of green chemistry is promoted.

The invention discloses a hyper-branched rolling cycle amplification detection method of soft-shelled turtle iridovirus, and the method is characterized by comprising the following steps: (1) designing a padlock probe and a pair of universal primers aiming at the connection sequence of the padlock probe; (2) preparing a padlock probe connection reaction system for performing connection reaction; and (3) preparing an HRCA (hyper-branched rolling cycle amplification) reaction system for performing HRCA amplification reaction, and finally detecting HRCA reaction products. The method has the following advantages: the method has higher sensitivity, specificity and convenience compared with the PCR (polymerase chain reaction) detection method of the soft-shelled turtle iridovirus in the prior art; furthermore, the method is simple and easy to operate, the detection method is fast and efficient, and 2-4 hours can be saved in comparison with the conventional PCR detection.

The invention discloses a preparation method of a C / Al-Si-X ablation-resisting composite material. The invention relates to the technical field of preparation of high-temperature ablation-resisting composite material. The invention solves the technical difficulty of too high melting temperature when a heatproof material is modified by a refractory metal during the preparation process, and overcomes the technical problem of interface reaction and C / C matrix damage. The method includes steps of firstly, weighing a raw material; secondly, preparing a carbon material-X precursor composite body; thirdly, splitting; fourthly, reducing; fifthly, preparing a prefabricating body; sixthly, processing impregnant; seventhly, applying pressure, and filling the impregnant in a prefabricating body hole. The preparation method is short in technical cycle and low in matrix price; the preparation method overcomes the shortcomings of interface reaction and C / C matrix damage caused by too high melting temperature of the refractory metal. The invention is used for preparing the ablation-resisting composite material.

The invention discloses a feed additive, which comprises the following components: monosodium glutamate, glycine, flavor nucleotides, citric acid, amino acid derivatives small peptides, ingestion promoting factors and starch. The main components of the feed additive are macromolecular amino acid derivatives prepared by isomerism processing and saponifying active components extracted from natural plants. When entering animal bodies, the macromolecular amino acid derivatives can stimulate a large number of secretory of hormones such as excitation gastrin, insulin, triiodothryonine (T3) and tetraiodothyronine (T4), remarkably improve the metabolic rate of animal bodies, enhance appetite and promote growing development of animals. Besides, when entering the animal bodies, active materials contained in the feed additive can activate glutamic acid decarboxylase, catalyze glutamic acid decarboxylation, improve concentration of central inhibitory neurotransmitter gamma-aminobutyric acid (GABA) formed by decarboxylation of the glutamic acid to enable animals to be quiet, shorten shallow sleep time of the animals such as pigs and prolong deep sleep time of the animals.

The invention relates to the foam sulfur separation method in regenerating tower of desulphurizing system by the membrane separation technique. The sulfur foam is changed to dehydration sulfur cream by micro filtering or hyperfiltration membrane filtering system and the evaporator process. The invention also provides the device which is made up of the membrane components, the evaporator and auto controlling system. The foam sulfur becomes to sulfur cream after passing the membrane components and the evaporator, which the membrane and the evaporator are controlled by the auto controlling system. The membrane components use the inner or outer pressure single channel or multi channel membrane terminal filtering mode. The invention has get over the high temperature, high energy cost and low sulfur recovering in the present process and decreases the sulfur recovering cost.

The invention discloses a titanium tetrachloride feeding method to manufacture titanium sponge through magnesium method, which is characterized by the following: setting an external heating device before the titanium tetrachloride is transmitted into reactor through feeding pipe, which gasifies the titanium tetrachloride; the gaseous titanium tetrachloride contacts metal liquid magnesium evenly to do reducing reaction; the external heating device contains external cylinder, closing plate, cylinder, heating element and flame-proof insulating material; two ends of external cylinder possesses closing plate, which contains an inner cylinder in the external cylinder; the heating element is set near to inner cylinder; the flame-proof insulating material is set among heating element, external cylinder and inner cylinder.

The invention discloses a lithium tetrafluorooxalatophosphate preparation method, which specifically comprises: introducing phosphorus pentafluoride generated by a reaction of elemental phosphorus andfluorine gas into a reaction kettle with a suspension formed from lithium oxalate and an organic solvent through a buffer tank, and carrying out a reaction, wherein the gas flow rate is controlled at1-5 L / min, preferably 2 L / min, the pressure change and the temperature change of the reaction kettle are real-timely monitored during the reaction, the temperature is maintained at 10-40 DEG C duringthe reaction, preferably 30 DEG C, the pressure is maintained at 0-0.5 MPa, preferably 0.1 MPa, a molar ratio of phosphorus pentafluoride to lithium oxalate is 2.2-2:1, preferably 2.05:1, a completestirring reaction is performed for 1-3 h, preferably 2 h, concentration crystallization is performed after filtering, and filtering and drying are sequentially performed to obtain the desired product.A purpose of the present invention is to improve the lithium tetrafluorooxalatophosphate preparation method based on the problems and the disadvantages of the existing process so as to reduce the preparation cost of the lithium tetrafluorooxalatophosphate and improve the quality of the product.

The invention relates to a fluorescent poly arylene ether nitrile multipolymer and a preparation method thereof, which belong to the technical field of high polymer materials. The preparation method comprises the following steps: using 2, 6- dichlorobenzonitrile, phenolphthalein and phenolphthalein as raw materials and N-pyrrolidone as solvents for carrying out dehydration reaction for 2 to 5 hours at 140 to 160 DEG C under the effect of catalysts and dehydration agents, raising the temperature to 180 to 200 DEG C for reaction after the dehydration agents are evaporated out, stopping the reaction when a pole climbing phenomenon occurs, crushing precipitates obtained through primary precipitation of reagents via precipitating agents, acidifying the precipitates by dilute hydrochloric acid, washing the precipitates by boiling water, filtering and drying the precipitates to obtain crude products, dissolving the crude products by dimethylformamide, filtering the solution, and obtaining the fluorescent poly arylene ether nitrile multipolymers after filtering and drying the precipitates after the secondary precipitation of filter liquid via the precipitating agents. The invention has the advantages that raw materials can be easily obtained, the reaction condition can be easily realized, the production process is easy to control, no secondary reaction and no byproduct are generated in the polymerization process, and the prepared fluorescent poly arylene ether nitrile multipolymer has good fluorescence performance, thermal stability, mechanical property and self fire resistance and belongs to a novel high-heat-resistance fluorescent polymer.

The invention provides a synthetic method of terbinafine. Monomethylamine, 1-chloromethyl naphthalene and 1-chloro-6,6-dimethyl-2-heptene-4-alkyne are subjected to a one-step reaction to generate theterbinafine. Particularly, the monomethylamine is slowly added into a solvent, and then an acid-binding agent is added; the 1-chloromethyl naphthalene and the 1-chloro-6,6-dimethyl-2-heptene-4-alkyneare simultaneously slowly dropwise added, and a dropwise adding speed is controlled so as to enable both the 1-chloromethyl naphthalene and the 1-chloro-6,6-dimethyl-2-heptene-4-alkyne to be simultaneously dropwise added up; a temperature control reaction is performed for 2 to 3 hours at a temperature of 10 to 20 DEG C; chloroform is added to extract reaction liquid, vacuum concentration is carried out on an organic layer to a dry state, and ethyl acetate is added into residues to carry out crystallization to obtain the terbinafine. The synthetic method is high in yield, simple in step and convenient to operate, generates few byproducts, and is beneficial to industrial production.

The organic liquid medium deiodinating process with no-adhesive zeolite adsorbent includes: filling no-adhesive zeolite adsorbent in fixed bed, making the iodine-containing medium contact with no-adhesive zeolite adsorbent containing at least one kind of exchanging metal cation, controlling the temperature and space velocity of the organic liquid medium passing through the adsorbing bed to lower the total iodine content in the iodine containing medium to less than 10 ppb. The adsorbent is prepared with hydrogen type zeolite powder with SiO2 / Al2O3 ratio of 15-30 and through adhering to form and crystal conversion. The adsorbent can eliminate organic and inorganic iodide and molecular iodine from organic medium effectively. The method of the present invention is suitable for eliminating iodide from various organic matters.

A lipid microsphere of andrographolide is prepared from andrographolide as active component, the oil for injection or medicine, emulsifier and the water for injection or medicine. Its preparing process is also disclosed.

The invention relates to a method for synthesizing a silver oxide semiconductor thin-film material through room temperature in-situ control. The method is characterized by comprising the following steps: putting a substrate material, the surface of which is covered by an elementary substance silver thin film, in a UV-03 reactor, maintaining the relative humidity of a system to 30-90%, and reacting for 1-2 hours at the temperature of 10-40 DEG C under the condition of oxygen or air existence so as to obtain the AgxO(AgO or Ag2O) semiconductor thin-film material on the surface of a substrate in situ, wherein the UV-03 reactor is a UV-03 cleaning machine. According to the method, solvents, surface active agents or other chemical additives are not needed in a reaction process. The method is simple to operate and low in energy consumption and preparation cost and has wide industrial application prospect.

The invention discloses a flocculant adding method in a selective bauxite flocculation process. A flocculant adding point is arranged in a pipeline of sedimentation equipment so that ore pulp flows into the pipeline, mixes with flocculant and generates the flocculation effect in the flowing process. The invention overcomes the defects that the prior flocculant adding modes are easy to cause the insufficient reaction between the flocculant and the ore pulp, floc agglomerations are easy to scatter, a flocculation phenomenon is not obvious, and the like; in addition, the invention develops a simple and feasible and practical flocculant adding mode with great floc agglomeration granularity, obvious selective flocculation phenomenon and good grading index.

An anti-radiation skin moistening cream for preventing human skin from being damaged by UV ray and electromagnetic wave, nourishing and moistening skin, and delaying skin sanility is prepared through mixing purified water, glycerin, propanetriol, sodium chloride and strawberry extract, stirring while heating, adding zinc oxide, stirring to obtain mixture A, preparing another mixture B while heating, mixing the mixture A with B, emulsifying, cooling, and adding essence.

The invention relates to a method for regulating and controlling the particle size of an intermediate phase carbon microball efficiently. The method is characterized by comprising the following step of regulating the content of primary quinoline insolubles (QI) in raw materials so as to prepare the intermediate phase carbon microball of the required meso-position particle size (D50), wherein the raw materials are selected from any one or the combination of pitch and heavy-weight oil, and the preferably selected pitch is selected from any one or the combination of coal tar, medium-temperature coal tar pitch, secondary coal tar pitch, petroleum pitch, secondary oil heavy weight oil, anthracene oil and polyaromatic hydrocarbon. The invention also relates to complete equipment and a catalyst pretreatment device for preparing the intermediate phase carbon microball. According to the invention, the meso-position particle size of the prepared intermediate phase carbon microball through regulating the content of the primary quinoline insolubles in the raw materials, the D50 of the prepared intermediate phase carbon microball is concentrated, and the yield reduction caused by the subsequent screening can be prevented effectively, thus the yield is high, the production cost is low, and the performances of the intermediate phase carbon microball can be ensured and improved, and the defect of ignition of a mixed liquid spraying tank caused by nonuniform mixing of the catalyst and raw materials, partial overheating, over severe catalyst reaction is overcome, and the complete equipment and the catalyst pretreatment device for preparing the intermediate phase carbon microball have the advantages of simplicity in operation, no dust, low preparation cost, environment pollution prevention and the like.