180results about How to "Increased internal surface area" patented technology

The decomposer film product has a polymeric decomposer layer, a cover layer for protecting the decomposer film from the surroundings and a releasable support liner, which is removed prior to use. The polymeric decomposer film contains a water-soluble or water-insoluble polymeric adhesive material and a decomposition accelerator, which acts to decompose an effective ingredient, such as a steroid hormone, of a worn or unused transderamal patch, when the effective ingredient releasing layer of the patch adheres to the polymer film, so that the pharmaceutical effective ingredient comes into contact with the decomposition accelerator by diffusion. The decomposition accelerator includes a chemically oxidizing substance, preferably urea peroxide, manganese (III) acetate or iron (III) citrate. The water-insoluble polymeric adhesive material is preferably an acrylates adhesive. The water-soluble polymeric adhesive material is preferably polyvinyl alcohol, polyvinyl pyrrolidone, a cellulose derivative or a polyacrylic acid.

The present invention relates to apparatus and method for re-circulating high viscosity liquids. The apparatus comprises a recirculating probe coupled to a fluid storage and dispensing vessel by a connector, and the recirculating probe comprises: (a) a dip tube defining an output flow path; (b) an output port; (c) a recirculating port; and (d) a return flow path. The output flow path and the return flow path preferably have substantially equal cross-sectional areas, which reduce or eliminate the unbalance between the discharge pressure in the output line and that in the re-circulation line, and prevent premature wearing-out of the dispensing/recirculating pump. The output flow path and the return flow path can also be concentric to each other, which not only maximizes the effective flow area for both output and return flow paths within the limited cross-sectional area of the opening of the fluid vessel, but also avoids liquid turbulence and/or formation of air bubbles caused by free-fall drip introduction of the re-circulated liquid that is commonly observed in conventional recirculating probe designs.

Methods, apparatus and assemblies for enhancing heat transfer in electronic components using a flexible thermal pillow. The flexible thermal pillow has a thermally conductive material sealed between top and bottom conductive layers, with the bottom layer having a flexible reservoir residing on opposing sides of a central portion of the pillow that has a gap. The pillow may have roughened internal surfaces to increase an internal surface area within the pillow for enhanced heat dissipation. In an electronic assembly, the central portion of the pillow resides between a heat sink and heat-generating component for the thermal coupling there-between. During thermal cycling, the flexible reservoir of the pillow expands to retain thermally conductive material extruded from the gap, and then contracts to force such extruded material back into the gap. An external pressure source may contact the pillow for further forcing the extruded thermally conductive material back into the gap.

A turbine airfoil includes pressure and suction sidewalls joined together at opposite leading and trailing edges, and at a forward bridge spaced behind the leading edge to define a flow channel. The bridge includes a row of impingement holes. The flow channel includes a row of fins behind the leading edge, a row of first turbulators behind the pressure sidewall, and row of second turbulators behind the suction sidewall. The fins and turbulators have different configurations for increasing internal surface area and heat transfer for back side cooling the leading edge by the cooling air.

The present invention discloses one kind of bone repairing material capable of inducing bone regeneration and its preparation process. The bone defect repairing material is composition of calcined bone powder of different sizes and bioabsorbable polymer material, the calcined bone powder has sizes of 0.05-2.5 mm; while the bioabsorbable polymer material is collagen, polyester, chitosan, etc. The bone defect repairing material has the preparation process includes the steps of mixing bone powder and bioabsorbable polymer material in acetic acid or NaHCO2 solution, ultraviolet irradiation of the mixture and fumigating with ethylene oxide. The bone defect repairing material possesses obvious effect of inducing bone healing, high biocompatibility, certain hardness and strength and other advantages.

A durable catalyst support/catalyst is capable of extended water gas shift operation under-conditions of high temperature, pressure, and sulfur levels. The support is a homogeneous, nanocrystalline, mixed metal oxide of at least three metals, the first being cerium, the second being Zr, and/or Hf, and the third importantly being Ti, the three metals comprising at least 80% of the metal constituents of the mixed metal oxide and the Ti being present in a range of 5% to 45% by metals-only atomic percent of the mixed metal oxide. The mixed metal oxide has an average crystallite size less than 6 nm and forms a skeletal structure with pores whose diameters are in the range of 4-9 nm and normally greater than the average crystallite size. The surface area of the skeletal structure per volume of the material of the structure is greater than about 240 m²/cm³. The method of making and use are also described.

The invention discloses a composite ionic adsorption material which is a spherical particle prepared by taking 80-85 parts of zeolitefine powder subjected to water bath modification by 0.8-1.0mol/L NaCl solution, 10-20 parts of medical stone fine powder, and 10-20 parts of kieselguhr fine powder as base materials, and 6 parts of activated carbon powder as a pore former and firing, wherein the diameter of the spherical particle is 2-12mm, and the pore volume of the spherical particle is 0.645-0.650 cm<3>/g. Activated zeolite is added to medical stone and kieselguhr to prepare the novel compound ionic material, and the zeolite, the medical stone and the kieselguhr jointly exert adsorption effects. The salt modified zeolite and medical stone increase an ionic exchange space and internal surface area, so that the adsorption capacity of the prepared composite adsorption material is further improved, and a better adsorption effect is achieved.

The invention discloses a minitype capacitance type gas sensor, which comprises an upper electrode flat plate, a lower electrode flat plate, a plurality of struts and medium films, wherein the struts are arranged between the upper electrode flat plate and the lower electrode flat plate, so that a cavity is formed between the upper electrode flat plate and the lower electrode flat plate; and the medium films are coated on the struts and the inner surfaces of an upper electrode and a lower electrode. The minitype capacitance type gas sensor is characterized in that: (1) the medium films on adjacent struts are not in contact to each other and a reserved cavity structure forms a gas diffusion channel; and (2) an air hole is not formed on the upper electrode flat plate and side walls between the upper electrode flat plate and the lower electrode flat plate are open, so that gas enters from the side walls. The minitype capacitance type gas sensor can detect various gases to be detected with extremely-low density and has the characteristics of quick response, high sensitivity and wide detection object.

A cartridge microreactor includes a tubular heater, a metal capillary reaction tubing and a brazing alloy. The tubular heater includes an inner tube surrounded by an outer heater sheath. The metal capillary reaction tubing has a high aspect ratio, an inlet port and an outlet port and is wrapped around the tubular heater so that it is in intimate thermal contact with the heater sheath. The brazing alloy permanently bonds the tubular heater with the metal capillary reaction tubing. The metal capillary reaction tubing is configured to be heated by the tubular heater and is configured to receive one or more reactants through the inlet port and to allow the reactants to react under a selected temperature and pressure and to produce one or more products exiting through the outlet port.

The invention relates to the field of cables, and particularly relates to an outer sheath of a fire-resistant cable, and a production method thereof. The outer sheath of the fire-resistant cable comprises the compositions in parts by weight: 43-47 parts of coal gangue particles, 7-9 parts of aluminum hydroxide, 5-7 parts of diantimony trioxide, 23-27 parts of ethylene propylene diene monomer (EPDM), 0.8-1.2 parts of modifier, 10-12 parts of vulcanizing agent, 3-5 parts of stabilizer, 0.4-0.8 part of stearic acid, 5-7 parts of paraffin oil, and 3-6 parts of dicumyl peroxide. According to the outer sheath of the fire-resistant cable, provided by the invention, the emission amount of hazardous and toxic gas in the burning process can be reduced, and the content of hazardous and toxic gas in a fire scene can be decreased so as to guarantee the life security of rescuers.

The invention relates to guar gum cleaning fracturing fluid with micro residue and weak damage. The guar gum cleaning fracturing fluid with micro residue and weak damage is composed of base liquid, a cross-linking agent and a gel breaker, the base liquid is composed of hydroxypropyl guar gum, a cleanup additive, an anti-swelling stabilizing agent, a fracturing bactericide, a fracturing de-emulsifier, a scale inhibitor and water. According to the invention, a guar gum multinucleated cross-linking agent with low amount is used, delay crosslinking effect is strong, guar gum concentration is greatly reduced, glue breaking residue amount is reduced, a multifunctional scale inhibitor is cooperated for preventing fouling generated by water used for fracturing liquid and stratum water, a selective polymer fracturing catalyst capable of thoroughly breaking glue and no generating sulfate radical is selected, liquid viscosity and residue content are reduced, the surface tension of the gel breaker after gel is broken is lower, the gel breaker is easily discharged, the formed guar gum multinucleated cross-linking agent has good temperature and shearing sustainability, and excellent proppant carrying capacity.

The invention discloses an insulated wire which belongs to a power material used in the field of power transmission. The insulated wire comprises a metal wire core and a protective layer wrapped on an outer layer of the metal wire core, wherein the protective layer sequentially comprises an insulating rubber layer, a polyurethane fiber layer and an insulating paint layer from inside to outside; and the polyurethane fiber layer is polyurethane fiber cloth knitted by polyurethane fibers. According to the insulated wire, the insulating rubber layer, the polyurethane fiber layer and the insulating paint layer are sequentially arranged on the surface of the metal wire core from inside to outside, so that the weather resistance and an insulating property of the insulated wire are greatly improved, and the service life of the insulated wire is further prolonged.

The invention discloses a hybrid material based on a macrocyclic compound photosensitive dye and titanium dioxide and a preparation method thereof, and application of the hybrid material to photocatalysis. The hybrid material comprises the macrocyclic compound photosensitive dye and titanium dioxide, wherein the macrocyclic compound photosensitive dye is a calixarene compound or porphyrin compound. The invention also discloses the preparation method for the hybrid material based on the macrocyclic compound photosensitive dye and titanium dioxide, and application of the hybrid material to photocatalysis. The organic-inorganic hybrid material prepared from the macrocyclic compound photosensitive dye and titanium dioxide has a hierarchical porous structure, and can improve the free diffusionof gas and surface adsorption of CO2, increase the adsorption quantity and activation degree of reactants, reduce the possibility of electron-hole recombination and effectively enhance photocatalysisefficiency. Moreover, the hybrid material of the invention has high stability and is improved in cyclic utilization stability in photocatalysis.

The invention relates to a defibrating process for tobacco sheets. It includes the following steps: (1) sorting, removing impurities, and pulverizing the tobacco stems or tobacco leaf fragments for pretreatment; (2) soaking and extracting the raw materials after the above treatment; (3) performing solid-liquid separation on the extract, and The insoluble matter in the aqueous solution is separated, and the obtained fiber is soaked and washed with lye and then treated with acid solution to neutrality; (4) the obtained fiber slurry is mixed with dry fiber, and the amount of dry fiber added is the total amount of fiber slurry (5) distilling and concentrating the extract obtained in step (2), dipping or spraying the obtained tobacco concentrate on the sheet base, and finally drying it to become a tobacco sheet. The tobacco sheet prepared by defibrating in the present invention has good mechanical strength, less alkali residue, and better smoking taste than products obtained by simple mechanical defibrating and chemical defibrating.

The invention discloses a method for preparing three-dimensional chitosan hydrogel by using a high temperature crosslinking method and the obtained chitosan hydrogel. The method comprises the following steps of: (a) dispersing chitosan powder into a deionized water; (b) adjusting the pH of chitosan dispersion obtained in the step (a) to be subacid; (c) carrying out high temperature crosslinking on the solution obtained in the step (b) at the high temperature of 80-125 DEG C; and (d) after the crosslinking reaction is completed, soaking and cleaning an obtained product by using a posttreatment liquid so as to remove a residual acid liquid. The high temperature crosslinking method is simple in the preparation process; the reaction time is short; raw materials are unnecessary for special treatment; highly-toxic chemical substances such as crosslinking agents are not introduced to a preparation course; no any chemical toxicant remains in a final product; and the three-dimensional chitosan hydrogel is even in pore structure, good in connectivity and easy to form, and is very suitably used as a support material of soft tissue engineering such as skin and cartilage.

The invention relates to a veterinary medicine composition for preventing and treating mycotoxin pathopoiesia. The veterinary medicine composition is prepared from the follow ingredients in parts by weight: 5 to 25 parts of mildew preventive, 5 to 25 parts of sodium humate, 5 to 25 parts of montmorillonite, 5 to 25 parts of rheum officinale, 5 to 25 parts of scutellaria baicalensis, 5 to 25 parts of coptis chinensis, 5 to 15 parts of liquorice and 5 to 25 parts of radix isatidis. The veterinary medicine composition has the advantages that the specific adsorption capacity is realized, various mycotoxins can be directionally and effectively eliminated, the veterinary medicine composition effectively aims at zearalenone, vomitoxin, aflatoxin, ochratoxin, fumitremorgin, T-2 toxin and the like, the detoxification capability of the liver per se on the toxin can be improved, and the toxin injury to animal bodies is eliminated.

The invention provides a bone repairing material and a preparation method thereof. The bone repairing material is of a porous structure, and the bone repairing material comprises a beta-transforming growth factor, hydroxyapatite, beta-tricalcium phosphate and collagen. The porous structure is good for proliferation and differentiation of bone cells. Meanwhile, the bone repairing material comprises the hydroxyapatite and the beta-tricalcium phosphate, and the disadvantages that the hydroxyapatite is too stable and the beta-tricalcium phosphate is too rapidly degraded are overcome; and the degradation speed of the material is balanced and is matched with a human skeleton repairing speed very well. The collagen can be used for promoting cell migration, adhesion and differentiation and adjusting cell growth. The beta-transforming growth factor can be used for promoting the proliferation and differentiation of periosteum mesenchymal cells, and the proliferation of the bone cells is promoted, so that the beta-transforming growth factor plays a very important role in a bone tissue metabolic process. To sum up, the bone repairing material provided by the invention has various advantages and can be matched with the human skeleton repairing speed, and the bone repairing requirements of human bone defects are met.

The invention relates to a tobacco stem modified processing method for paper-making process reconstituted tobaccos. The method includes the steps that soft chemical modified processing is firstly carried out on solid matter parts obtained after extraction processing on tobacco stems with alkali or alkaline organic salt, and then modified solid matter parts obtained after solid-liquid separation are used for manufacturing the reconstituted tobaccos; and soft chemical modified processing is characterized in that the alkali or the alkaline organic salt which is 0.2%-5.0% of the solid matter oven dry weight is mixed into a solution with the mass ratio concentration being 10%-12%, preheating is carried out until the temperature ranges from 30 DEG C to 70 DEG C, and the solution is added into solid matter. By means of the tobacco stem modified processing method, the quality of tobacco stem components can be improved and enhanced, the using value of tobacco stem raw materials is improved, and the production cost of the reconstituted tobaccos is reduced.

The invention relates to a water quality modifier, and in particular to a water quality modifier and a preparation method thereof. The modifier is prepared from the following raw materials in parts by weight: 20 to 30 parts of zeolite powder, 12 to 25 parts of calcium peroxide, 13 to 27 parts of lignite, 4 to 11 parts of lignin, 5 to 10 parts of polyethylene glycol, 4 to 11 parts of potassium ferrate, 6 to 13 parts of titanium dioxide powder and 7 to 15 parts of polyethyleneimine. The technical scheme provided by the invention can be used to a certain extent for overcoming the defects of being poor in ammonia nitrogen removal effect in wastewater, not conducive to the survival of fish and poor in water quality modification effect of a modifier provided in the prior art.

The invention discloses a super-hydrophobic modification method of mineral admixtures. The super-hydrophobic modification method comprises the following steps: firstly crushing fly ash, granulated blast furnace slag powder, limestone powder and other mineral admixtures to obtain a powder material with a particle size of 100-20000 meshes; adding the powder material in ethanol for ultrasonic dispersion treatment, then sequentially dropwise adding water and a coupling agent and uniformly stirring; finally adding cyclohexane and n-butanol mixed liquid, then dropwise adding an appropriate amount ofsilicon oil modifiers, fully and uniformly stirring, drying treatment and grinding to a certain fineness. The super-hydrophobic modification method disclosed by the invention is simple and easy to operate; the fly ash, the granulated blast furnace slag powder and the limestone powder used in raw materials are several kinds of industrial waste residues with larger emission in China; through the super-hydrophobic modification method disclosed by the invention, the high-level comprehensive utilization of the waste residues is realized, a value added is improved, wastes are changed into valuables, and the regeneration of resources is realized while the environmental pollution is eliminated.