31results about How to "Special affinity" patented technology

The invention discloses a making method for printed-circuit boards, comprising the following steps of: removing a copper layer outside a circuit graphic region on a substrate, wherein the substrate is provided with a non-through hole which is internally attached with palladium; and removing palladium in the non-through hole. The invention further discloses a palladium removing device for the printed-circuit boards; during removing palladium, a palladium-removing agent is a mixed solution of a hydrochloric acid solution and a thiocarbamide solution. The invention can be used for making the printed-circuit boards.

The invention relates to a polypropylene mesh / electro-spinning nano-fiber membrane as well as a preparation method and an application thereof. The polypropylene mesh / electro-spinning nano-fiber membrane is prepared through the following steps: (1) preparing a chitosan-polyethylene glycol hydrogel; (2) preparing basic fibroblast growth factor (bFGF) embedded polylactic acid-poly lactic-co-glycolic acid (PLGA) microspheres; (3) preparing an electro-spinning solution; (4) preparing the polypropylene mesh / electro-spinning nano-fiber membrane by use of an electro-spinning method. According to the polypropylene mesh / electro-spinning nano-fiber membrane, the polypropylene mesh and the nano-fiber membrane are compounded creatively, and therefore, the biocompatibility of the polypropylene mesh is improved by use of the nano-fiber membrane and the tensile strength of the nano-fiber membrane is improved by use of the polypropylene mesh, and the polypropylene mesh and the nano-fiber membrane supplement each other; in addition, the microspheres are introduced to realize controlled drug release; as a result, lots of defects of the clinical existing polypropylene meshes can be overcome.

An active casein phosphopeptide is prepared from industrial casein (or milk powder) 80-150 g, calcium oxide 2.8-4.8 y, trypsase 2-6 g and distilled water 1000 g through mixing industrial casein with distilled water, stirring while heating to 35-45 deg.C, regulating pH value to 4-5, adding calcium oxide, gradually heating to 60-78 deg.C, holding the temp. for 20-30 min, cooling to 36-39 deg.C, adding trypsase, filtering, deodouring, derusting, spray-drying to obtain the powder and sieving to remove large granules. Its advantages are easy absorption by human body and low cost.

The present invention discloses a kind of bilobalide B emulsion for injection to treat cardiac and cerebral vascular diseases. The bilobalide B emulsion for injection is prepared with bilobalide B and medicinal supplementary material in certain ratio, and through dissolving, heating, mixing, emulsifying, cooling, filling and other technological steps. The bilobalide B emulsion for injection has high structural integrity and bioactivity of bilobalide B, high stability, high safety a high effectiveness. It is used for treating cardiac and cerebral vascular diseases, and can treat cardiac and cerebral vascular diseases in high effect and provide the patient with energy.

The invention relates to a treating fluid used for the cultivation of nucleus pearls, and belongs to the technical field of pearl cultivation. The treating fluid comprises the following components: (a),a first treating fluid and (b), a second treating fluid, wherein the first treating fluid comprises the components as follows: a bamboo charcoal powder solution, a dry-chrysanthemum solution, a gold mudstone solution, a gobi stone solution, a safflower parasitic skin solution, a peach parasitic skin solution, a safflower loranthus parasiticus skin solution and a vitamin B solution; the second treating fluid comprises the components as follows: acid red, chondroitin, mafenide, taurine, sodium chloride, hyriopsis cumingii polysacchride, vitronectin and water. According to the invention, through using the treating fluid for cultivation, the technical problems that the peals cultivated by the traditional method are dim in luster, poor in quality and low in survival rate are solved.

The invention relates to a method for cultivating nucleus pearls, and belongs to the technical field of pearl cultivation. The method comprises the steps as follows: step one, taking out a pearl nucleus to be put into a first treating fluid for soaking and cultivation; step two, taking out a cell chip of the edge membrane of the rear half part of a mussel body to be put into a second treating fluid for soaking and cultivation; step three, enabling the cell chip to be adhered to the pearl nucleus and planted into the mussel for cultivation so as to form a nucleus pearl, wherein the first treating fluid comprises the components as follows: a bamboo charcoal powder solution, a dry chrysanthemum solution, a gold mudstone solution, a gobi stone solution, a safflower parasitic skin solution, a peach parasitic skin solution, a safflower loranthus parasiticus skin solution and a vitamin B solution; the second treating fluid comprises the components as follows: acid red, chondroitin, mafenide, taurine, sodium chloride, hyriopsis cumingii polysacchride, vitronectin and water. According to the method provided by the invention, the rejection of the mussel body to pearl nucleus is overcome, the vitality of the cell chip is promoted, and large-scale operation can be implemented.

The present invention relates to one kind of slow released granular medicated diet for protecting gastrointestinal mucous membrane. The medicated diet is prepared with pearl, dark plum, Chinese yam, haw, malt and other seven kinds of Chinese medicinal materials in certain weight proportion. The medicated diet is used in treating gastrointestinal diseases and protecting gastrointestinal mucous membrane by means of its special affinity on gastrointestinal mucous membrane, and has the features of high effect and lasting action.

The invention belongs to the technical field of film separation and relates to a chitosan / ionic liquid cross-linked gel film with a sandwich structure and a preparation method thereof. The film is characterized in that the film has the sandwich structure, the upper and lower surface layers are arranged as cross-linked surfaces and a gel layer is arranged in the middle. The preparation method comprises the following steps: (1) uniformly mixing chitosan, ionic liquid and solvent under a certain temperature, paving on a polytetrafluoroethylene plate, and drying to remove the solvent to obtain a gel film; (2) soaking the gel film in the solution containing the cross-linking agent and catalyst for 0.2-12 hours and performing the surface cross-linking reaction on the gel film; (3) drying the cross-linked gel film in air for 24 hours, and then transferring into a vacuum drying oven, and processing for 24 hours at 30 DEG C, thereby acquiring the chitosan / ionic liquid cross-linked gel film with the sandwich structure. According to the preparation method provided by the invention, the upper and lower surfaces of the film are cross-linked, so that the chitosan / ionic liquid cross-linked gel film with the sandwich structure is formed, the ionic liquid is difficult to run off, the lasting stability of the physical structure and property of the film is ensured and the preparation method is fit for the separating of the carbon dioxide in the mixed gas and the recycling of the organic steam.

The present invention discloses a preparation method of an organic phosphorus pesticide residue detection sensor based on copper / copper oxide nano-wires. The preparation method comprises: (1) synthesizing copper nano-wires; (2) carrying out high temperature calcining to prepare copper oxide nano-wires; 3) preparing a copper nano-wire / graphene / chitosan complex; (4) preparing a copper oxide nano-wire / single-walled carbon nano-tube complex; (5) preparing a modified electrode; and (6) electrochemically detecting the organic phosphorus pesticide residue content. According to the present invention, the Cu / CuO nanometer material has good catalytic performance and excellent sensing performance, has special affinity for thiol-based compounds, can specifically test organic phosphorus pesticides, and further has advantages of low raw material cost and simple and easily-available raw materials, and the detection method is rapid, sensitive and convenient; with the good film forming property of the chitosan, the step for modifying the composite material onto the electrode surface is simplified so as to substantially reduce the electrode preparation cost; and the organic phosphorus pesticide residue is effectively adsorbed onto the electrode material surface by the single-walled carbon nano-tube to form a layer of the barrier for hindering the electron transfer so as to achieve the pesticide detection.

The invention relates to a method for cultivating nucleus pearls, and belongs to the technical field of pearl cultivation. The method comprises the steps as follows: step one, taking out a pearl nucleus to be put into a first treating fluid for soaking and cultivation; step two, taking out a cell chip of the edge membrane of the rear half part of a mussel body to be put into a second treating fluid for soaking and cultivation; step three, enabling the cell chip to be adhered to the pearl nucleus and planted into the mussel for cultivation so as to form a nucleus pearl, wherein the first treating fluid comprises the components as follows: a bamboo charcoal powder solution, a dry chrysanthemum solution, a gold mudstone solution, a gobi stone solution, a safflower parasitic skin solution, a peach parasitic skin solution, a safflower loranthus parasiticus skin solution and a vitamin B solution; the second treating fluid comprises the components as follows: acid red, chondroitin, mafenide, taurine, sodium chloride, hyriopsis cumingii polysacchride, vitronectin and water. According to the method provided by the invention, the rejection of the mussel body to pearl nucleus is overcome, the vitality of the cell chip is promoted, and large-scale operation can be implemented.

The present invention discloses a bilobalide (mixture or ginkgo extract) emulsion for injection, in particular, it relates to a bilobalide (including single bilobalide A, B and C, etc.) injection emulsion for curing angiocardiopathy and cerebrovascular disease. It is made up by using bilobalide and medicinal auxiliary material according to a certain ratio through the processes of dissolving, heating, uniformly mixing, emulsifying, cooling and filling to obtain the invented product.

The invention relates to a polypropylene mesh sheet / electrospinning nanofiber membrane and a preparation method and application thereof. The polypropylene mesh / electrospun nanofibrous membrane was prepared by the following steps: 1) preparation of chitosan‐polyethylene glycol hydrogel; 2) preparation of polylactic acid‐glycolic acid copolymer embedded with basic fibroblast factor bFGF PLGA microspheres; 3) preparation of electrospinning solution; 4) preparation of polypropylene mesh / electrospinning nanofiber membrane by electrospinning. The invention creatively combines the polypropylene mesh with the nanofiber membrane, uses the nanofiber membrane to improve the biocompatibility of the polypropylene mesh, and uses the polypropylene mesh to improve the tensile strength of the nanofiber membrane, the two complement each other, and then The introduction of microspheres to achieve controlled release of drugs can fill in many deficiencies of the existing clinical polypropylene mesh.

The invention provides a gas phase magnesium purification method based on a pure iron filter material. The method uses the pure iron filter material to filter magnesium vapor, on one hand, the pure iron does not react with the magnesium vapor, and no new impurities are brought to the system; on the other hand, impurities Al, Mn and iron in the magnesium vapor have special affinity, and stable solid solution can be formed with iron; meanwhile, pure iron can be used as a site for nucleation of certain impurities in the magnesium vapor, so that the nucleation energy barrier can be reduced, the certain impurities can be deposited in advance, and impurities can be removed. The method can be applied to industrial large-scale gas phase magnesium purification, the production efficiency of magnesium purification is improved on the order of magnitude through increasing the temperature, the content of impurities Mn in the magnesium raw material is reduced to 10 ppm or below, the content of Al isreduced to 10 ppm or below, the content of Ca is reduced to 20 ppm or below, and meanwhile, non-metal impurity elements such as F, Cl and S can be removed to obtain the magnesium with the purity of 99.99% or above.

The invention provides a gas-phase magnesium purification method based on a pure iron filter material. The method uses a pure iron filter material to filter magnesium vapor. On the one hand, pure iron will not react with magnesium vapor and will not bring new impurities to the system; on the other hand, the impurities Al and Mn in magnesium vapor have special affinity with iron and can form a stable solid solution with iron ; At the same time, pure iron can be used as the nucleation site of some impurities in the magnesium vapor, lowering the nucleation energy barrier, allowing some impurities to deposit in advance, and removing impurities. The method provided by the invention can be applied to industrial large-scale gas-phase magnesium purification, and the production efficiency of magnesium purification can be increased by an order of magnitude by increasing the temperature, so that the content of impurity Mn in the magnesium raw material is reduced to below 10 ppm, and the content of Al is reduced to below 10 ppm. The Ca content is reduced to below 20ppm, and at the same time, non-metallic impurity elements such as F, Cl, and S can be removed to obtain magnesium with a purity of more than 99.99%.

The invention provides a method for purifying magnesium in the vapor phase based on a nickel-based filter material. The method uses a nickel-based filter material to filter magnesium vapor. Under a certain temperature and vacuum degree, the nickel material does not react with the magnesium vapor on the one hand. It will not bring new impurities to the system; on the other hand, the nickel material has a special affinity with the impurities Al and Mn in the magnesium vapor, and can form a stable solid solution; at the same time, the nickel material can also be used as some impurities in the magnesium vapor The nucleation site lowers the nucleation energy barrier and enables some impurities to be deposited in advance to achieve removal. The method provided by the invention can be applied to industrialized large-scale gas-phase magnesium purification, while improving the production efficiency by an order of magnitude, the Mn content in magnesium is reduced to below 10ppm, the Al content is reduced to below 10ppm, and the Si content is below 20ppm. Non-metallic impurity elements such as F, Cl, S, etc. improve product purity, and the purity of the obtained magnesium is above 99.99%.

A medicine Cihuang nanoparticle for treating tumor is prepared from As2O3, thioacetylamine (TAA), hydrochloric acid and absolute alcohol as solvent through reaction at a certain temp.

The invention discloses a comprehensive method for removing non-condensable gas dissolved in a refrigerant, and relates to the technical field of refrigerant production and processing methods, in particular to the comprehensive method for removing the non-condensable gas dissolved in the refrigerant, and the method for removing the non-condensable gas in the refrigerant is divided into four independent methods and two combined methods. The method I specifically comprises the following steps: heating at constant pressure; the second method comprises the steps of degassing and membrane filtration; the third method comprises the following steps: ultrasonic degassing; a fourth method: molecular sieve adsorption; wherein the combination of the first method and the second method and the combination of the first method, the second method and the third method can also be used for removing the non-condensable gas. According to the comprehensive method, in the transferring and sub-packaging process of transferring and sub-packaging the refrigerant into another container, constant-pressure heating, degassing membrane filtration, ultrasonic degassing and molecular sieve adsorption methods are combined to remove non-condensable gas dissolved in the refrigerant.

Traditional Chinese medicine granules for treating cerebral thrombosis are composed of following ingredients: 40g of membranous milk vetch root, 6g of leech, 15g of sanchi, 15g of achyranthes, 30g of salvia miltiorrhiza, 15g of glechoma longituba, 15g of earthworm, 20g of European verbena and 20g of nux vomica, 1000g of water is added in the medicines for decoction till about 200g of water is remained, the medicines are prepared into the granules by fetching dregs, the dosage is once a day and one course of treatment is 7 days. The formula is used based on the conventional western medicine treatment for treating acute cerebral infarction, thereby having rapid onset of action, reliable and safe efficacy, fast recovery of patients and less sequelae.

The invention discloses an intestinal dialysis composition for pet dogs and cats and a preparation method of the intestinal dialysis composition and belongs to the field of veterinary care. The dialysis composition comprises the following components: 10-20g of unprocessed rehmannia roots, 10-20g of chitosan, 10-20g of calcium butyrate, 50-100g of modified zeolite and 200-300ml of acetic acid witha volume percentage of 4%. The preparation method comprises the following steps: sufficiently dissolving the unprocessed rehmannia roots, the chitosan and the calcium butyrate into the acetic acid, adding the modified zeolite, blending the components into a paste, performing sufficient infiltration, performing pelletizing by using a pelletizer, and performing drying at 60 DEG C for 4 hours, so asto obtain a finished product of which the particle size is 0.8-1.2mm. Components of the intestinal dialysis composition for pet dogs and cats take synergetic effects into play, uremia toxins such as urea and decomposition products, namely substances such as ammonia, phosphate and creatinine, of the uremia toxins, in intestines, can be adsorbed, small molecule substances such as the uremia toxins such as urea in blood can be promoted to be discharged to enterocoels, then the concentration of the small molecule substances in blood can be reduced, hyperazotemic and hyperphosphatemia caused by kidney failure can be relieved, and recovery of kidney failure can be facilitated. The composition is economic and practical and convenient to operate.

Traditional Chinese medicine granules for treating cerebral thrombosis are prepared by the following ingredients: 40g of membranous milk vetch root, 6g of leech, 15g of sanchi, 15g of achyranthes, 30g of salvia miltiorrhiza, 15g of glechoma longituba, 15g of earthworm, 20g of European verbena and 20g of nux vomica, 1000g of water is added in the medicines for decoction till about 200g of water is remained, the medicines are prepared into the granules by fetching dregs, the dosage is once a day and one course of treatment is 7 days. The formula is used based on the conventional western medicine treatment for treating acute cerebral infarction, thereby having rapid onset of action, reliable and safe efficacy, fast recovery of patients and less sequelae.

The invention belongs to the technical field of gas-membrane separation and relates to a polyether-block-amide gel membrane with a sandwich structure and a thermal-cross-linking preparation method thereof. The polyether-block-amide gel membrane is characterized by being provided with the sandwich structure, wherein the upper surface layer and the lower surface are cross-linked layers, and a gel layer is arranged in the middle. The preparation method comprises the following process steps: (1) mixing polyether block amide, ionic liquid and a solvent uniformly at certain temperature, flatly laying the mixture on a polytetrafluoroethylene plate, and drying the solvent to prepare the gel membrane; (2) respectively coating a layer of solution containing a thermal initiator and a cross-linking agent on the upper surface layer and the lower surface layer of the gel membrane, transferring into a baking oven, controlling certain temperature and time, and carrying out surface thermal cross-linking reaction of the gel membrane; and (3) drying the cross-linked gel membrane for 24 hours in the air, then transferring into a vacuum drying box, and treating for 24 hours at the temperature of 30 DEG C to obtain the polyether-block-amide gel membrane with the sandwich structure. The polyether-block-amide gel membrane and the preparation method have the advantages that by cross linking of the upper surface layer and the lower surface layer of the membrane, the polyether-block-amide gel membrane with the sandwich structure is formed, and the loss of polyethylene glycol is not easy, so that the durability and the stability of the physical structure and the properties of the membrane are guaranteed. The polyether-block-amide gel membrane and the preparation method are applicable to separating carbon dioxide in mixed gas and recovering organic vapor.

The invention provides a nickel base filter material-based gas phase magnesium purification method. The method is characterized in that a nickel base filter material is adopted to filter magnesium vapor, under a certain temperature and vacuum degree, on one hand, the nickel material does not react with the magnesium vapor, so that new impurities cannot be brought to a system; on the other hand, the nickel material and impurities Al and Mn in the magnesium vapor have special affinity, so that a stable solid solution can be formed; and meanwhile, the nickel material can be used as a site for nucleation of a certain of impurities in the magnesium vapor, so that the energy barrier of nucleation is reduced, the certain impurities are deposited in advance, and removal is achieved. According to the method, the method can be applied to industrial large-batch gas phase magnesium purification; the production efficiency is improved by an order of magnitude, and meanwhile, the Mn content in magnesium is reduced to 10 ppm or less, the Al content is reduced to 10 ppm or less, and the Si content is reduced to 20 ppm or less; and non-metal impurity elements such as F, Cl and S can be removed, so that the purity of a product is improved, and the purity of the obtained magnesium is 99.99% or above.

The invention provides the application of elemental silicon filter material in gas-phase magnesium purification. In the gas-phase magnesium purification process, magnesium vapor passes through the elemental silicon filter material. In a certain range of temperature and vacuum degree, elemental silicon will not interact with magnesium vapor on the one hand. The reaction will not form a more stable substance with magnesium in thermodynamics, and will not bring new impurities to the system; on the other hand, the impurities Mn, Al, and Ca in silicon and magnesium vapor have special affinity and can form more Stable solid solution, so as to achieve removal; at the same time, elemental silicon can be used as the nucleation site of certain impurities in magnesium vapor, lowering the nucleation energy barrier, allowing certain impurities to deposit in advance, thereby achieving removal. The invention can effectively remove impurities in the magnesium vapor through the function of the elemental silicon filter material, greatly improve the purity of the magnesium, and the purity of the obtained magnesium is above 99.99%. The production system provided by the invention is suitable for large-scale industrial production, can effectively improve the efficiency of magnesium purification, and reduce the cost of magnesium purification.

The invention belongs to the technical field of gas film separation and relates to a polyether block amide gel film with a sandwich structure and a photo-crosslinking preparation method thereof. The film is characterized in that the film has the sandwich structure, the upper and lower surfaces are arranged as crosslinking layers and the middle layer is arranged as a gel layer. The preparation method comprises the following steps: (1) uniformly mixing polyether block amide, ionic liquid and solvent at a certain temperature, paving on a polyfluortetraethylene plate, and drying to remove the solvent so as to obtain the gel film; (2) coating upper and lower surfaces of the gel film with a layer of solution containing photoinitiator and cross-linking agent, transferring into an ultraviolet light curing machine for curing for 20 minutes and carrying out the surface photo-crosslinking reaction of the gel film; (3) drying the gel film after photo-crosslinking in air for 24 hours, and then transferring into a vacuum drying oven and treating for 24 hours at 30 DEG C, thereby acquiring the polyether block amide gel film with the sandwich structure. According to the preparation method provided by the invention, the upper and lower surfaces of the film are subjected to photo-crosslinking so as to form the polyether block amide gel film with the sandwich structure, so that the ionic liquid is difficult to run off, the lasting stability of the physical structure and property of the film is ensured and the film is fit for the separation of carbon dioxide in the mixed gas and the recycling of the organic steam.

The invention belongs to the field of research of natural medicines and particularly relates to a traditional Chinese medicine compound gel suppository for contraception and a preparation method thereof. The effective components of the suppository provided by the invention are lightyellow sophora roots and Chinese pulsatilla roots, and the mass ratio of the lightyellow sophora roots to the Chinesepulsatilla roots is 3:1; and the suppository also comprises Carbomer, beta-cyclodextrin, glycerol, sodium hydroxide, ethanol and distilled water. The preparation method comprises the following steps:drying the lightyellow sophora roots and the Chinese pulsatilla roots according to the ratio, then performing reflux extraction, performing rotary evaporateion and concentration on the extracting solution, and metering the volume of the distilled water to obtain a mother solution for later use, wherein each 100ml of the mother solution contains 2g of crude medicines; and mixing the mother solution with ethanol and glycerol to obtain a mixture, then mixing the mixture with a carbomer solution in which beta-cyclodextrin is added, performing uniform mixing, then performing injection molding andcooling, eliminating the overflowing part, and performing mold release to obtain the suppository. The suppository provided by the invention has a good contraception effect, also has a lubrication function, and is safe and effective.

The invention relates to a treating fluid used for the cultivation of nucleus pearls, and belongs to the technical field of pearl cultivation. The treating fluid comprises the following components: (a),a first treating fluid and (b), a second treating fluid, wherein the first treating fluid comprises the components as follows: a bamboo charcoal powder solution, a dry-chrysanthemum solution, a gold mudstone solution, a gobi stone solution, a safflower parasitic skin solution, a peach parasitic skin solution, a safflower loranthus parasiticus skin solution and a vitamin B solution; the second treating fluid comprises the components as follows: acid red, chondroitin, mafenide, taurine, sodium chloride, hyriopsis cumingii polysacchride, vitronectin and water. According to the invention, through using the treating fluid for cultivation, the technical problems that the peals cultivated by the traditional method are dim in luster, poor in quality and low in survival rate are solved.

The invention belongs to the technical field of film separation and relates to a chitosan / ionic liquid cross-linked gel film with a sandwich structure and a preparation method thereof. The film is characterized in that the film has the sandwich structure, the upper and lower surface layers are arranged as cross-linked surfaces and a gel layer is arranged in the middle. The preparation method comprises the following steps: (1) uniformly mixing chitosan, ionic liquid and solvent under a certain temperature, paving on a polytetrafluoroethylene plate, and drying to remove the solvent to obtain a gel film; (2) soaking the gel film in the solution containing the cross-linking agent and catalyst for 0.2-12 hours and performing the surface cross-linking reaction on the gel film; (3) drying the cross-linked gel film in air for 24 hours, and then transferring into a vacuum drying oven, and processing for 24 hours at 30 DEG C, thereby acquiring the chitosan / ionic liquid cross-linked gel film with the sandwich structure. According to the preparation method provided by the invention, the upper and lower surfaces of the film are cross-linked, so that the chitosan / ionic liquid cross-linked gel film with the sandwich structure is formed, the ionic liquid is difficult to run off, the lasting stability of the physical structure and property of the film is ensured and the preparation method is fit for the separating of the carbon dioxide in the mixed gas and the recycling of the organic steam.