705results about How to "Guaranteed permeability" patented technology

The invention relates to an oil field production technique, in particular to a fracturing method applied under the oil well to improve new well production capacity of low permeability reservoir before being brought into production. The fracturing reformation course at least comprises common fracturing technique and is characterized in that the method uses a compound application of more than two techniques of the use of acid fracturing liquid, or diversion agent or acid liquid and diversion agent by adopting high-energy gas fracturing technique; the upper sealed fracturing pipe is adopted during the working of hydraulic fracturing; the acid liquid is adopted during a pad fluid stage as the working liquid; the diversion agent is added for one or more times to seal fractured cracks; an increasing working flow rate is adopted before and after the adding of the diversion agent. The method of the invention can increase oil discharging area after fracturing, reduce expansion rate of clay minerals in fractured reservoir and improve completion of oil well reformation, fracturing effect and production capacity of low permeability reservoir after fracturing.

The present invention provides a method for improving the performance of polyimide membranes as used in solvent-resistant nanofiltration. More specifically the method of the present invention allows to imrove the solvent stability of the polyimide membranes to solvents or solvent mixtures that would dissolve polyimide under the conditions applied during the filtration, such as dimethylforrnamide (DMF), N-methylpyrrolidinone (NMP), dimethylacetamide (DMAC), tetrahydrofuran (THF), y-butyrolacton (GBL), dimethylsulphoxide (DMSO) and chlorinated solvents.

The invention discloses a planting method for tea-oil trees. The method comprises the following steps of: (1) selecting soil and an area, building horizontal steps on a slope around a mountain, digging drainage ditches on the inner sides of the steps, and digging pits at fixed points according to a planting distance, wherein the pits are arranged to form delta shapes; (2) after the pits are dug, properly applying garbage tankage, rice straws, dicranopteris pedata and farmyard manure, wherein base fertilizers are required to be deeply applied; (3) during the blossoming of the tea-oil trees, marking early blossoming type plants of a selected tea-oil tree variety, selecting high-yield and high-premonition plants from the marked plants when fruits are matured in the next type, and picking mature and full tea-oil tree seeds; (4) sowing the seeds from every early November to February of the next year, wherein germination is accelerated and the seeds are sown after the seeds are sterilized; (5) after the seeds come up, selecting seedlings, and filling gaps with the seedlings; and (6) after the tea-oil trees are fruited, applying the farmyard manure and a compound fertilizer or a phosphate fertilizer, a potash fertilizer and urine in every May to July. The problems of irrational structure of a planting structure, low oil yield, shortage of scientific management and the like of the conventional tea-oil tree planting process are solved.

The invention relates to anti-bioadhesion polyelectrolyte gel as well as a preparation method and application thereof. The preparation method comprises the steps of uniformly mixing one or several polyelectrolyte polymer solutions with opposite charges in a charge ratio of 1 to 1, and generating gel by virtue of a physical crosslinking method, or a chemical crosslinking method or the combination of two methods, wherein positive charges and negative charges are balanced, and the form gel is electroneutral. The preparation method of the polyelectrolyte gel is simple and easy to operate, and theprepared gel has good protein adsorption resistance, is high in water content, does not cause inflammatory reaction and is beneficial to the mass transfer between a transplant and an organism. Therefore, the polyelectrolyte gel can be widely applied to the biomedical fields, particularly can be used for treating diabetes mellitus through packaging of islet cells and can be used as a drug release carrier, a wound dressing, a tissue repair scaffold material and the like.

The invention relates to a selenium-rich plant nutrient solution and a preparation method thereof. The selenium-rich plant nutrient solution is prepared from Chinese medicinal herb extracts, amino acid and trace elements by a high-temperature complexing technology. The selenium-rich plant nutrient solution contains the following trace elements: iron, copper, zinc, manganese, selenium, boron and titanium. The selenium-rich plant nutrient solution has an obvious effect on increasing the crop yield, and the contents of nutrient substances and trace elements, especially the content of selenium.

The invention discloses an ecological comprehensive treatment system of a northern mountain river channel. The system comprises three sub ecological systems of an ecological permeable dike built on the upstream of a main stream and a branch stream of a mountain river, a reservoir pond arranged at the middle and downstream area of the mountain river and a wet land communicated with the reservoir pond, and adopts an ecological treatment mode of closure-storage-preservation. The construction method comprises the steps of: a) building of the ecological permeable dike; b) setting of a triangular pyramidal wood pile stone cage; c) building of the reservoir pond; d) planting of plants of the reservoir pond; e) building of a wet land system; and f) recovery of a river bank band. The system and the construction method can effectively intercept the mountain debris flow and the river non-point source pollution, adjust the river runoff, improve the hydrologic conditions of the mountain river in non-flood season, decrease the dry season of the mountain river, and facilitate to recover the ecological system of the mountain river. Meanwhile, traditional depressions and empty ponds in the mountain river can be used in construction, so that the engineering building cost is reduced, and the self-cleaning capacity of river water is improved.

The invention discloses a plant cultivation medium and its preparation method. The cultivation medium includes a garden greening waste compost, vinegar residues and turf, and is prepared through blending the garden greening waste compost, vinegar residues and turf according to a volume ratio of 3-6:2-3:2-6. The cultivation medium improves the physical and chemical properties of original mediums, reduces the application amount of a nonrenewable medium turf which is massively used in the production of flowers at present, allows the vinegar residues and garden greening wastes to be massively used to realize changing of wastes into valuables and resource recycle, and has obvious social, ecologic and economic benefits.

The invention discloses a tartary buckwheat complex tea. The tartary buckwheat complex tea is obtained by using tartary buckwheat as main raw material, blending the tartary buckwheat with a finished product tea, and packaging the tea by using a visible nylon and degradable material packaging bag through ultrasonic sealing. The blending ratio of the complex tea is as follows: in each 100 g complex tea, the content of the tartary buckwheat is 50-70 g and the content of the finished product tea is 30-50 g by weight. The complex tea disclosed by the invention has both nutritional values of the tartary buckwheat and health care function of the tea; and fragrances of the tartary buckwheat and the tea are organically blended so that the taste, fragrance and nutritional value of the complex tea are all largely superior to those of the traditional tartary buckwheat tea, green tea or black tea; and mellow taste and attractive fragrance are obtained so that double requirements on taste and health are both satisfied.

This invention relates to soft magnetic compound materials, which are characterized by the following: the said materials comprise iron material, isolation agent and lubrication agent with their weight percentage as 92-99 úÑ, 0.5-5 úÑ , 0.5-3 úÑ; the said iron material is powder material, which comprise deoxidized powder, atomized iron powder, hydroxide powder and iron alloy with iron of 80-99.8úÑ; Particle distribution of 20-500; the said isolation agent adopts nanometer calcium carbonate powder or ceramics powder or magnetic oxidation power; the said lubrication is micro powder. The process comprises the following steps: mixing, shaping, solidifying and stainless processing.

This invention discloses method and specific apparatus for producing fireproof glass. The apparatus comprises: an upper stage plate, a furnace, a cooling wind grating and a lower stage plate. A baffle is set between the heating furnace and the cooling wind grating. The method comprises: (1) spray-coating a cesium / potassium salt solution onto glass at normal temperature; (2) naturally wind-drying the spray-coated glass at normal temperature, placing in a 680-725 deg.C tempering furnace, rapidly heating, cooling, circulating the glass between the heating furnace and the cooling wind grating by a roll so that the heating and cooling temperature is uniform, and unloading to obtain fireproof glass. The cesium / potassium salt solution comprises: cesium salt 0.8-1.2%, potassium salt 38-41%, acetone 40-45%, formic acid 8-13%, and Swiss-78 6-8%. The fireproof glass has such advantages as high heat resistance, low specific gravity, high light permeability, no yellowing, and no air bubbles.

The invention discloses a method utilizing phosphate mineralized bacteria to solidify and loosen loose sand particles. The method comprises the steps that bacillus subtilis is inoculated to beef extract and a peptone culture medium for obtaining bacterial liquid, then disodium phenyl phosphate is added to the prepared bacterial liquid, an anhydrous calcium chloride solution with the concentration of 0.5-1.5mol / L is prepared, 70-90g of sand with two levels of less than 0.15mm and of 0.15-0.30mm is prepared according to the closest Fuller packing method and then loaded into a trial mould with a buffering pad and a sand filter, the bacterial liquid and a chemical solution are respectively poured into the prepared sand in the third step through a peristaltic pump according to a volume ratio of 1:1, the flowing speed of the bacterial liquid is controlled to be 4-6mL / min, the flowing speed of the chemical solution is 10-15mL / min, continuous pouring is carried out for 8-15 days, and the sand with the mould is placed into an oven of 60 DEG C for being conserved for 48h and then taken out and released from the mould. The compressive strength of the sand can reach 1.0MPa.

The invention relates to the technical field of protection treatment of concrete materials, and aims to provide a nano-silicon-modified double-component wear-resistant penetration hardener and a preparation method thereof. The hardener comprises a component A and a component B, wherein the component A is composed of silicone prepolymer, a wear-resistant modification material, a stabilizer and a solvent; the component B is composed of a catalyst and a solvent; both components adopt alcohol as the solvent. The nano-silicon-modified double-component wear-resistant penetration hardener provided by the invention has a higher hardening speed and a more obvious wear-resistant effect compared with an aqueous silicate penetration hardener, is stored separately in the form of the component A and the component B to provide better storage stability compared with a single-component organosilicon resin penetration hardener so as to better ensure the permeability to the concrete during use, and adopts nano-silicon sol as the wear-resistant modifier to greatly improve the wearing-resistance of concrete treated by the penetration hardener.

An organic resin laminate comprising an organic resin substrate and a multilayer coating system thereon has UV-shielding property and high mar resistance. The multilayer coating system includes an outermost layer (I) resulting from plasma polymerization of an organosilicon compound, a lower layer (II) of a silicone coating composition comprising composite oxide nanoparticle dispersion, silicone resin, curing catalyst, and solvent, and optionally a bottom layer (III) of acrylic resin.

The invention disclose a loop type heat pipe comprising an evaporator and a pipeline, wherein the pipeline connects two opposite ends of the evaporator to form a loop, working fluid is filled in the loop, the evaporator comprises a hollow shell, a clapboard is arranged in the hollow shell and divides the interior of the evaporator into an evaporating chamber and a compensating chamber, and a capillary structure is arranged in the evaporating chamber and extends into the compensating chamber through the clapboard. Compared with the prior art, the capillary structure in the evaporating chamber extends the compensating chamber after passing through the clapboard, so that the area of the capillary structure exposed in the compensating chamber is reduced, the heat transferred into the compensating chamber is reduced and the effective pressure difference of the loop type heat pipe is efficiently guaranteed; in addition, the invention reduces the number of bubbles generated on the surface of the capillary structure in the compensating chamber, efficiently guarantees the permeability of the working liquid in the compensating chamber, prevents the working liquid of the evaporating chamber from being dried, prolongs the service life of the loop type heat pipe, and improves the working efficiency of the loop type heat pipe.

The invention discloses an oil field chemical agent used in petroleum gas oil-pumping operation construction, and particularly relates to a low-permeability reservoir water-lock releasing agent used in working fluid and a preparation method thereof. The low-permeability reservoir water-lock releasing agent consists of the following components in percentage by weight: 1 to 15 percent of glycol ether, 15 to 45 percent of didodecyl dicarboxylic sodium, 15 to 30 percent of ethylene glycol silicon ether and 30 to 60 percent of water. The preparation method comprises the following steps of: adding 30 to 60 percent of water into an enamel reaction kettle, starting a stirrer, and heating to raise the temperature to be between 30 and 40 DEG C; adding 1 to 15 percent of glycol ether and 15 to 45 percent of didodecyl dicarboxylic sodium into the reaction kettle, controlling the temperature and stirring for 1 hour; and adding 15 to 30 percent of ethylene glycol silicon ether into the reaction kettle, controlling the temperature to be between 40 and 80 DEG C, and reacting for 1 to 2 hours to obtain the water-lock releasing agent. The water-lock releasing agent is strong in surface activity and low in use level, can well maintain the permeability of a low-permeability reservoir and release water-lock damages, and is used in the working fluid such as fracturing fluid, perforating fluid, well control fluid and the like.

The present invention discloses a processing method of a thermoplastic elastic insole. A TPR thermoplastic elastomer (thermoplastic rubber) as the main raw material, and the following processing steps are adopted, firstly, compounding is that the TPR thermoplastic elastomer and toner are compounded according to the weight ratio of 10000 to 8 till 10000 to 16 and are sent into a kneading machine to be kneaded for 20 to 40 minutes; secondly punching a cloth is that a base material of the cloth is punched and sheared as the shape of a mould of the insole which is needed to for a laying cloth; thirdly injection mold and molding are that at first placing the laying cloth is that the laying cloth is put inside an injection mold and is placed above a lower mold; then feeding is that the well kneaded raw material is put into an injection mold and molding machine, than molding is that the injection mold is sent into the injection mold and molding machine, and the injection mold and molding machine starts to inject towards the injection mold, and the injection temperature is 150 DEG C to 250 DEG C, and injection pressure is 30 bar to 90 bar, and a rotating speed of a screw is 25 to 75 turns per minute, and a backpressure is 3 bar to 4 bar; fourthly punching a margin is that the insole is taken out from the mold, and the redundant marginal material joints are punched down by a punch; fifthly punching is that exhausting pylomes are punched at the insole. The insole produced by the present invention has good breathability, pliability and rebound resilience.

The invention relates to a nasal sinus stent. The nasal sinus stent extends along the longitudinal shaft and is loaded with drugs, and comprises a supporting rod with a straight tube structure and a sleeve, wherein the supporting rod is provided with a top end and a free end; a clamping structure which is outward extruded in the radial direction is arranged on the tube wall, close to the free end, of the supporting rod; the sleeve is arranged on the outer wall of the supporting rod in a sleeving manner, and is provided with an annular connecting end and a movable end; a plurality of connecting spokes are arranged between the connecting end and the movable end and are arranged at intervals one another; the top end is fixedly connected with the connecting end; and the movable end can be used for clamping the clamping structure. The invention further provides a conveying system. The nasal sinus stent is used for conveying under a contracted state, is used for supporting the lesion position under an unfolded state, and is used for treatment by utilizing the drugs.

The invention discloses a novel TFT copper-molybdenum laminated film etching liquid composition. The composition is prepared from the following components in percentage by weight: 5-30% of hydrogen peroxide, 0.1-5% of H2SO4, persulfide, chloride, 0.05-0.3% of a hydrogen peroxide stabilizer, 0.005-0.3% of a metal complexing agent, 0.005-0.2% of a surface active agent, 0.001-1% of imidazole additive as well as the balance of water, wherein the persulfide and the chloride are 0.01-0.5% in total in percentage by weight. The novel TFT copper-molybdenum laminated film etching liquid composition is uniform in copper-molybdenum laminated film etching, moderate in etching rate and long in service life.

The invention provides an additive for balancing the gastrointestinal health of animals, which is prepared by absorbing 3 to 15 percent of tributyrin, 21.5 to 52.5 percent of lactic acid and 3.5 to 7.5 percent of formic acid with special carrier white black carbon by grade and layer respectively and then combining the mixture with 1 to 10 percent of glutamine. The additive has the effects of controlling diarrhea and accelerating restoration of injured intestinal tract, and starting from a philosophy of balancing the relationship between the gastropore and the intestinal tract, saving resources, reducing environment loads and improving quality of livestock products, a comprehensive gastrointestinal health management scheme is provided.

The invention relates to a novel PEG (polyethylene glycol) in-situ covalent grafted modified alginate / polycation microcapsule. The microcapsule is a hydrogel bead of alginate, or the inside of the microcapsule is filled with liquid or hydrogel of alginate and the outer surface is a polyelectrolyte composite hydrogel film which is formed by polycation and alginate; a covalent bond is formed on the microcapsule through a click chemical reaction between an alkylene group and an azide group on the alginate, and PEG is grafted to the surface of the alginate hydrogel bead or alginate / polycation / alginate microcapsule in an in-situ covalent mode; and a finished product is applicable to embedding of bioactive substances and living cells. The microcapsule film not only keeps excellent biocompatibility but also takes good film strength into consideration, so as to guarantee the integrity of the film in the processes of tissue cell transplantation as well as cell culture and application.

The invention discloses a production process of a superfine dry particle ceramic large plate and a product of the same. The production process comprises the following steps: (1) brushing a green body and spraying water to wet the green body; (2) sequentially spraying overglaze on the surface of the green body and carrying out ink-jet printing on the surface of the green body; (3) spraying dry granular glaze slip on the surface of the green body obtained in the step (2) in a bell jar mode, and the dry granular glaze slip comprises, by weight, 110-130 parts of a suspending agent, 35-45 parts of superfine dry granules and 4.5-11 parts of raw transparent glaze; wherein the superfine dry particles comprise 19-21% of corundum powder; and (4) firing, brushing and throwing to obtain the superfine dry particle ceramic large plate. According to the invention, the dry granular glaze is sprayed on the surface of the green body, so that fine and smooth small particles with frosted texture are formed on the surface of the prepared large ceramic plate, thereby improving the wear resistance and skid resistance of the large ceramic plate, and solving the problems of poor wear resistance and poor skid resistance of the existing large ceramic plate.

The invention discloses a strip seeding production line for raising hybrid rice seedlings. The production line is composed of a front part, a rear part and various mechanisms, wherein a driving motor, a drive device, a fertilizer applying mechanism, a subsoil mechanism, a brushing and flattening mechanism and a groove rolling mechanism are arranged on a front rack; a driving motor, a drive device, a seeding mechanism, a water spraying mechanism and a soil covering mechanism are arranged on a rear rack; and all the mechanisms are driven in a stepless synchronization manner and are respectively provided with a regulating device, so that the capacity of each mechanism can be regulated according to different needs. After an empty seedling disk passes an inlet, the drive devices convey the seedling disk into the production line, and thus the seedling disk can be driven at the bottom of each mechanism, wherein the fertilizer applying mechanism applies a thin layer of seedling strengthening agent fertilizers at the bottom of the seedling disk; the subsoil mechanism spreads subsoil on the fertilizers distributed in the seedling disk; the brushing and flattening mechanism brushes the subsoil on the surface of the seedling disk so as to flatten the subsoil; the groove rolling mechanism rolls 18 trapezoidal grooves in the subsoil on the seedling disk; the strip seeding mechanism quantificationally sows sprout seeds into the grooves in time by virtue of a strip seeding device; the water spraying mechanism firstly sprays atomized water to position the seeds in the grooves and then sprinkles water for the secondary time so as to ensure that the water is completely permeated into the subsoil; and the soil covering mechanism overlays a thin layer of fine soil on the seeds to prevent the exposure of the seeds so as to ensure that the seeds are not influenced, so that the one-time seeding is finished by the production line. The production line provided by the invention is suitable for strip seeding in the raising of the hybrid rice seedlings.

The invention discloses a mesoporous perovskite solar cell which comprises an FTO transparent conductive substrate, a compact layer, a mesoporous layer, an organic and inorganic metal halide perovskite layer, a hole transport layer and a metal counter electrode, wherein the compact layer, the mesoporous layer, the organic and inorganic metal halide perovskite layer, the hole transport layer and the metal counter electrode are sequentially stacked on the FTO transparent conductive substrate. The mesoporous layer is a multi-level structure titanium dioxide nano material converted by sintering a metal organic framework object. The adopted multi-level structure titanium dioxide nano material converted by sintering the metal organic framework object has large specific surface area and large particle size, can guarantee that perovskite completely permeates into the mesoporous layer, and guarantees sufficient and good contact of perovskite and titanium dioxide. The mesoporous perovskite solar cell adopting the multi-level structure titanium dioxide nano material as the mesoporous layer solves the problem that when universal small titanium dioxide nano particles serve as a mesoporous layer at present, perovskite cannot completely permeate into titanium dioxide, and accordingly photo-induced electrons cannot be sufficiently collected from a perovskite layer to a titanium dioxide layer, and battery efficiency is improved.

The invention discloses a preparation method of a crack type carbonate rock core. The preparation method comprises the steps of firstly, mixing calcium carbonate powder, epoxy resin and an EP (Epoxy Resin) curing agent in a ratio, then pressing and curing to form a square rock board; then cutting the rock board by using an automatic slicing machine along different directions to form cracks with different shapes; and finally, drilling rock cores at different crack angles in the rock board with the cracks by using a rock core drilling machine. The prepared rock cores are basically equal in matrix porosity and permeability, and different in crack number and directions, and thus the demand on a crack type rock core exploitation simulation experiment can be met.

The invention discloses an optimal scheduling method and device for a flexible interconnection power distribution network. The method comprises steps of determining a flexible interconnection device of the flexible interconnection power distribution network; utilizing active and reactive power of a converter of the flexible interconnection device as a decision variable, taking the minimum comprehensive power supply cost and the minimum voltage deviation of the flexible interconnection power distribution network as optimization objectives, performing predictive control according to a classic model, and establishing an intra-day optimal scheduling model of the flexible interconnection power distribution network, wherein the intra-day optimal scheduling model comprises a prediction model androlling optimization, the prediction model adopts a voltage sensitivity method to predict a voltage of each node in the flexible interconnection power distribution network, and the rolling optimization adopts an adaptive dynamic weight method to process a multi-objective optimization problem containing comprehensive power supply cost and voltage deviation. The method is advantaged in that a problem that research and analysis of operation scheduling of the flexible interconnection power distribution network in related technologies are not enough to meet the current technical requirements is solved.

The invention discloses a crack plugging agent based on expansion particles and solidifiable particles, and belongs to the technical field of profile control and water plugging of an oil field. The crack plugging agent is composed of the expansion particles and the solidifiable particles which are separately stored, the mass ratio of the solidifiable particles to a solidification agent is 100:(5-20), and the content of the expansion particles is indefinite; the solidifiable particles are prepared from a solid core and film-coated resin in a mass ratio of 100:(5-15). The solidifiable particlesare high in strength, high in temperature resistance and salt tolerance and wide in oil reservoir applicability; an immovable plug formed by the solidifiable particles has an interception function ofa screen net, the breakthrough pressure gradient of the expansion particles in cracks can be obviously improved, the expansion particles are forced to remain in the cracks to continue to give play toa water plugging effect, meanwhile, the immovable plug has a penetration capacity, water, a gel breaker and the like are allowed to pass through the immovable plug so as to remove plugging of the expansion particles, and the crack plugging has restorability. The crack plugging agent has a good water plugging effect in water plugging of the oil field.

The invention belongs to the field of a metal ion sensing technology, in particular to an electropolymerizable fluorescent sensing material and application of the electropolymerizable fluorescent sensing material on fluorescent or electropolymerizable detection of metal ions. According to the electropolymerizable fluorescent sensing material, 2, 7-fluorene and 2, 2'-dipyridyl (or 1, 10-phenanthroline) are served as a main chain, and a side chain is connected with a carbazole group through an alkyl group. A rigid main chain structure of a compound provided by the invention guarantees the fluorescent sensing material to have high fluorescent efficiency, but a side chain of strong metal identification unit guarantees selectivity of a detection material. In addition, a micropore structure of a film prepared by electropolymerization can effectively guarantee the metal ions to quickly diffuse in the film and improve flexibility of film detection. According to the fluorescent sensing material provided by the invention, raw materials with cheap prices are easily obtained, and a synthesis process is relatively simple, so that the electropolymerizable fluorescent sensing material is a metal ion fluorescent / electrochemical sensing film material with high potential.

The invention mainly discloses a multilayer screening machine which comprises a first box, a second box, a first screen plate, a second screen plate and a third screen plate. The second box is positioned in the first box and connected with a first rotating device, the first screen plate, the second screen plate and the third screen plate are sequentially arranged in the second box from top to bottom, a stirring device is arranged in the second box and comprises a stirring rod, a stirring disk and a second rotating device, the stirring rod penetrates the second box and the first box and is connected with the second rotating device, the stirring disk is connected with the stirring rod and respectively positioned above the first screen plate, the second screen plate and the third screen plate, and combing teeth are arranged on the stirring disk. According to the multilayer screening machine, automatic multilayer screening is achieved by the aid of a plurality of screen plates, the screening machine is wide in screening range, the stirring device and the second box mutually and reversely rotate, screening of materials is accelerated, screening quality is improved, blocking of the screening machine is prevented, maintenance frequency is reduced, and the service life of the screening machine is prolonged.

The invention provides an asymmetrical stainless steel filter membrane tube and a production method thereof. The asymmetrical stainless steel filter membrane tube produced by the production method for the asymmetrical stainless steel filter membrane tube comprises a support layer and a control layer and is characterized by further comprising stainless steel fiber felts between the support layer and the control layer. According to the asymmetrical stainless steel filter membrane tube disclosed by the invention, the stainless steel fiber felts are additionally arranged among different powder layers, so that the filtering precision and the filtering performance of the filtering tube in performance are ensured; and meanwhile, the problems of cracking, peeling and the like of the stainless steel filter membrane with mutant fluctuant gradient in the sintering process are solved to the great degree.