4812results about How to "Prevent infiltration" patented technology

The invention provides a modular, configurable aisle isolation and containment system that may function as a hot aisle or as a cold aisle. The data center air routing system of the invention comprises one or more free-standing, essentially identical, modular system units. Each modular unit comprises two sidewalls, a ceiling, and a door or panel at either end to form an interior, enclosed aisle. Two or modular units may be coupled together end-to-end. Each modular unit further comprises one or more sidewall blanking panels that may be removed to create gaps of varying height and width to accommodate one or more IT racks. Each modular unit may also include one or more ceiling-mounted air ducts, baffles and fans to manage air flow.

A pre-solder structure on a semiconductor package substrate and a method for fabricating the same are proposed. A plurality of conductive pads are formed on the substrate, and a protective layer having a plurality of openings for exposing the conductive pads is formed over the substrate. A conductive seed layer is deposited over the protective layer and openings. A patterned resist layer is formed on the seed layer and has openings corresponding in position to the conductive pads. A plurality of conductive pillars and a solder material are deposited in sequence in each of the openings. The resist layer and the seed layer not covered by the conductive pillars and the solder material are removed. The solder material is subject to a reflow-soldering process to form pre-solder bumps covering the conductive pillars.

The present invention relates to a multi-layered anti-adhesion barrier, particularly to a multi-layered anti-adhesion barrier comprising a nanofibrous structured base layer electrospun from a hydrophobic, biodegradable, biocompatible polymer and a polymer layer formed by coating a hydrophilic, biooriginated polymer on the base layer, and a method for the preparing the same. The multi-layered anti-adhesion barrier of the present invention can solve the problems of the conventional gel, solution, sponge, film or nonwoven type anti-adhesion systems, including adhesion to tissues or organs, flexibility, physical strength, ease of handling (ease of folding and bending), etc., offers improved user convenience. With a nanofibrous structure, the multi-layered anti-adhesion barrier of the present invention effectively blocks the infiltration or migration of blood and cells and promotes the healing of wounds. It is not torn or broken when folded or rolled and can be easily handled using small surgical instruments. Thus, it can minimize a foreign body reaction when used in various surgical operations.

Molded fiber products using agriculture residues are economical and environmentally beneficial. Molded fiber manufacturing is different from molded pulp. The present invention discloses a method of and an apparatus for the manufacturing of molded fiber shaped body (10) using low consistency fiber slurry (12) subject to vacuum-forming and thermo-curing. The use of porous material as mold inserts for both vacuum-forming (101) and thermo-curing (102) stations provides improved productivity and enables ease of mold release. The incorporation of self-cleaning techniques further ensures consistent performance of the manufacturing system.

An organic EL display is displayed. The display is manufactured sealing and joining an organic light emitter constituted from thin film transistors, anodes, a light-emitting layer, a cathode and a protective layer which are laminated on a substrate, together with a laminated body of color filters and a black mask formed on a transparent substrate. The organic EL light-emitting layer is aligned with the color filters during the process of sealing the substrate and the transparent substrate using an outer periphery sealing layer and an internal sealing layer. The outer periphery sealing layer provides precise alignment between the organic EL light-emitting layer and the color filters and rapid fixing between them can be carried out, and prevents infiltration of moisture from the outside environment. The internal sealing layer prevents reflection of light from the organic EL light-emitting layer, and hence the light can be transmitted to the color filters effectively. The device and method prevent peeling apart due to cure shrinkage, peeling apart due to thermal stress from the temperature of the environment, and infiltration of moisture from the outside environment, so that stable light emission characteristics can be maintained over a long period.

The invention relates to a fabric pre-treating method for digital ink-jet printing of a dispersed dye, which comprises the following steps of: (1) uniformly mixing 1 to 5 percent of water-soluble organic polymer, 2 to 3 percent of porous inorganic nano particle, 0.1 to 2 percent of surfactant and water to form a pre-treating agent; and (2) dipping, padding and coating a fabric dyed by a dispersed dye or sparing the pre-treating agent on the fabric dyed by the dispersed dye, wherein the fabric carrying liquid rate is 50 to 90 percent, drying the fabric, and heating the fabric at 180 to 220 DEG C for 0.5 to 20 minutes. The method of the invention is simple, low in cost and suitable for industrial production; the direct ink-jet printing of the fabric with the pre-treating agent has the advantages of uniform color, inhibited penetration phenomenon, high printing precision, sharp boundaries of patterns, clear detail and bright color; and the fabric offers a soft hand feel and has very good washing, friction and color fastness to light.

The invention relates to a gas diffusion layer with a gradient hole structure for fuel batteries and a preparation method and applications thereof. The gas diffusion layer consists of a macroporous carbon-based support body and a micro-porous layer which are overlapped, wherein the material of the micro-porous layer is embedded in the macroporous carbon-based support body from one side, far from the flow field of a battery, of the macroporous carbon-based support body to form a transitional hole layer; the transitional hole layer is composed of the material of the micro-porous layer and the fiber of the macroporous carbon-based support body and is obtained by embedding the material of the micro-porous layer in the side, far from the flow field of a battery, of the macroporous carbon-based support body; and the curvature of reaction gas transfer from the side next to the flow field to the side next to a catalyst layer in the gas diffusion layer increases gradiently and the air permeability gradually reduces from 4-10s/100ml to 100-900s/100ml. By adopting the gas diffusion layer with the structure, the mass transfer curvatures of water and the gas in the gas diffusion layer (GDL) can be effectively increased, the transfer path of the product-water can be prolonged and liquid water in the battery can be maintained; and the gas diffusion layer is particularly suitable for fuel batteries working under low humidity and the cathodes of alkaline fuel batteries.

The invention relates to a semi-flexible heavy-duty pavement paving structure. The semi-flexible heavy-duty pavement paving structure comprises a surface layer having a thickness of 4-6cm and made of a high-viscosity modified asphalt mixture of SMA-13 or SMA-16, a middle surface layer having a thickness of 6-10cm and made of a high-modulus asphalt mixture of AC-EME14 or AC-EME20, a lower surface layer having a thickness of 10-12cm and made of a low-grade asphalt mixture of ATB-25 or ATB-30, and a semi-flexible base layer having a thickness of 6-12cm and made of skeleton solid cement-emulsified asphalt concrete; a high-viscosity modified asphalt bonding layer is arranged between the surface layer and the middle surface layer, between the middle surface layer and the lower surface layer and between the lower surface layer and the semi-flexible base layer, and the spreading quantity of the high-viscosity modified asphalt bonding layer per unit area is 0.6-0.8kg/m<2>; and an ES-2 modified emulsified asphalt slurry is arranged between the semi-flexible base layer and a bottom base layer, and has a suitable thickness of 6-10mm. The structure improves the rut resistance and the fatigue resistance of a pavement, and prolongs the service life of the pavement.

The invention relates to a flame-retardant flexible facing tile and a preparation method thereof. The flame-retardant flexible facing tile is characterized by comprising the following raw materials in percentage by mass in terms of the total quantity of the raw materials: 40.0-46.0% of aggregates, 10.0-40.0% of inorganic cementing material, 10.0-30.0% of flexible modifier, 1.0-5.5% of functional additive, 0-1.0% of fiber, and 0-10.0% of water. The flame-retardant flexible facing tile is obtained by carrying out mixing stirring, molding and drying on the raw materials. According to the flame-retardant flexible facing tile prepared according to the invention, with the inorganic cementing material as a bonding material and high-molecular polymer as the flexible modifier, the flame-retardant flexible facing tile not only has the advantages of high toughness, good air permeability, strong hydrophobicity, good matching degree with various substrates, rich patterns and colors and the like, but also has very good flame retardancy and good durability capable of keeping the integral structure for a long time.

The present invention relates to washing apparatuses (410) and washing methods, more particularly, to an information transceivr (420) of a new structure for a washing apparatus, for making automatic determination of kinds of laundry introduced to an inside of a drum, and differential determination of washing environments with reference to determined information, for making smooth wash of the laundry.

The invention belongs to the field of macromolecule inorganic chemistry, and in particular relates to a method for preparing a graphene toughened silicon carbide ceramic composite material. Specifically, the method comprises the following steps: by taking graphite oxide as a carbon source, wrapping the surface of reduced graphene oxide with a layer of SiO2 granules by using a hydrothermal method so as to form a good interface layer between graphene and SiC, uniformly dispersing, and implementing carbon thermal reduction reaction at the interface of graphene and SiO2 in the high-temperature sintering process so as to growth silicon carbide crystal whisker and granules in situ, thereby improving the interface strength and the oxidation resistance, achieving an interface intensification function, improving crack expansion resistance and further improving the fracture toughness of ceramic. The method aims at the defects that graphene is poor in dispersity and high-temperature oxidation resistance in a conventional graphene/silicon carbide composite material, in-situ growth, crack self-healing and toughness mechanisms are applied to a preparation technique of a graphene/silicon carbide material, and thus graphene toughened silicon carbide ceramic with excellent mechanical properties and interface binding properties can be prepared.

An integrated fiber cement and foam cladding system is provided that incorporates foam or similar light weight material to improve the insulation capacity of the cladding system. The system includes at least a fiber cement layer and a foam layer disposed on the backside of the fiber cement layer. The system improves the R-value of the building, a measure of the building's resistance to transferring heat or thermal energy.

The invention discloses a reactive polymer waterproofing coiled material which comprises a fetal membrane layer, a reactive composite rubber layer and an anti-sticking isolation film layer; the reactive composite rubber layer is covered on the surface of the fetal membrane layer, and the anti-sticking isolation film layer is covered on the other surface of the reactive composite rubber layer; thereactive composite rubber comprises the following components in percentage by weight: 85.0 to 92.0 percent of SIS hot melt adhesive, 3.0 to 5.0 percent of talcum powder, 2.0 to 3.5 percent of composite ore powder, 1.0 to 2.5 percent of gaseous silica, 0.5 to 2.0 percent of silane coupling agent, and 0.5 to 2.0 percent of nano calcium carbonate. The waterproofing coiled material can have chemical cross-linking reaction and be cured with a cast-concrete matrix, fundamentally avoids 'watermoving between layer', and has the advantages of high strength, high toughness, aging resistance, long service life and the like.

With a hearing aid device having a device element which can be worn on or behind the ear and an earmold which protrudes at least partially into the auditory canal of a user, in which earmold a receiver is arranged, the protection of the receiver from contamination is to be improved. To this end, a sound outlet opening in the earmold is covered with a membrane and a ventilation channel is provided for the rear ventilation of the membrane, with at least one segment of the ventilation channel running in a connecting piece, which connects the device element to the earmold.

The invention relates to a binary method for a low-quality document image based on local contract and estimation of stroke width. The method comprises the steps that the scanned document image is obtained; the colored document image u (x, y) is grayed in a minimum mean method; character stroke pixel is detected based on the local contrast; global optimal thresholding is carried out on the obtained local contract image in an Otsu method; edge detection is carried out on the binary image via a Canny operator, the amount nfg of the character foreground pixels and the amount nedge of the character edge pixels are calculated respectively, the contour proportion lambda is calculated by dividing the nfg by the nedge, and the character stroke width is estimated via the contour proportion; and image local binarization is carried out in a sliding neighborhood method. According to the method, details of character strokes are reserved effectively, the character foreground is effectively segmented, and phenomena including ink marks infiltration, spot of pages, textured background, and non-uniform illumination can be inhibited.

The invention relates to an asymmetrically-structural ceramic ultrafiltration membrane and a preparation method thereof, wherein the preparation method thereof comprises the steps: dispersing one-dimensional fibrous material in sol and sufficiently mixing the material with the gel; by adding deionized water, controlling the weight ratio of gel particle to fiber in membrane preparing solution in a range from 0.01 to 0.4, adjusting pH value of the solution, adding dispersing agent, thickening agent and defoaming agent to formulate the membrane preparing solution, coating membrane on a porous support body and drying the porous support body to form a transition layer; coating the gel-containing membrane preparing solution on the surface of the transition layer, air-drying, oven-drying and roasting the wet membrane, and naturally cooling the membrane to result in the asymmetrically-structural ceramic ultrafiltration membrane. Since the transition layer is composed of fiber and sintering is promoted through the gel, resistance of the transition layer is advantageously lessened and interior combination strength of the transition layer is enhanced; the fiber-constructed transition layer divides large pores into small pores to provide larger total porosity and flowing pore channel, thus high permeation flux is maintained while high selectivity is obtained.

Inhibition of CXCR4 can inhibit tumor growth and metastasis during certain therapeutic windows. Disclosed are novel methods for treating and preventing cancer in a subject related to administration of CXCR4 inhibitors during a therapeutic window following treatment with another anti-tumor therapy.

The invention relates to a roadbed filler for a road and a preparation method of the roadbed filler. The roadbed filler for the road is characterized by being prepared from lime, pulverized fuel ash, phosphogypsum and stabilizer. The weight percentage of each material in the lime, the pulverized fuel ash and the phosphogypsum is 15% of lime, 30-50% of pulverized fuel ash and 35-60% of phosphogypsum; the sum of the weight percentages of the materials is 100%; the stabilizer is water glass or NaAlO2 (sodium metaaluminate); the adding amount of the water glass is 2-6% of total mass of the lime, the pulverized fuel ash and the phosphogypsum, and the adding amount of the NaAlO2 is 0.5-2% of total mass of the lime, the pulverized fuel ash and the phosphogypsum. Due to the roadbed filler for the road prepared by the method, not only can the early strength be improved, but also the problem of water stability can be solved.

The invention relates to wet process refractory mortar which comprises the following raw materials by weight: 25-50 parts of white fused alumina powder with the granularity of not more than 180 meshes, 40-65 parts of the white fused alumina powder with the granularity of not more than 320 meshes, 1-5 parts of phosphate binder, 1-4 parts of plasticizer, 1-3 parts of water retention agent, 0.1-1 part of resin type preservative, 0.05-0.5 part of preservative agent and 0-10 parts of Cr2O3 powder with the granularity of not more than 320 meshes, the wet process refractory mortar is prepared by uniformly stirring the raw materials, adding 12-18 parts of water, continuously uniformly stirring, and then loading into a plastic bag for sealing and preserving, and the preservation period is a year and a half to two years.

The invention discloses a dual-component aqueous polyurethane paint with scrawling resistance and pasting resistance, and a preparation method thereof. The dual-component aqueous polyurethane paint with scrawling resistance and pasting resistance is prepared by using aqueous hydroxy-containing polyacrylic resin dispersion and fatty group polyisocyanate as main film forming substances, adding organosilicon resin emulsion, deionized water, antifoaming agent, wetting agent, dispersant, pigment, dulling agent, wax emulsion and thickening agent and carrying out high speed disperse. The paint has characteristics of high crosslinking density, low surface tension, strong permeability resistance, good scratch resistance, substantial scrawling resistance and pasting resistance, excellent performances of low VOC content, high hardness, good weatherability, brushing resistance and chemical resistance, and is suitable for application fields of municipal public facility, building paint and terrace paint coating, etc.

The invention relates to a hot compression high phosphorus iron-base diamond bit and the preparation method. The content of the diamond is 75 percent to 95 percent, the matrix materials have the component and the content that Fe powder is 35 percent to 50 percent; P is 3 percent to 6 percent; B is 1 percent to 2 percent; Ni is powder 5 percent to 10 percent; Co powder is 5 percent to 7 percent; 663-Cu powder is 25 percent to 32 percent; Mn powder is 2percent to 3 percent; Ti powder is 1 percent to 2 percent; rare earth La is 1.5 percent to 2 percent, and rare earth Ce is 1.0 percent to 1.5 percent. The preparation method comprises the procedures of material preparation, material packing and material mixture, die filling, hot-pressed sintering. The invention has the advantages that the matrix materials are widely used, and the cost is low; the sintering temperature is decreased; the hot etching of the iron to the diamond under high temperature is reduced; and the service life of the drill bit are improved; the drill bit has a broad spectrum; and the application scope is wide.

The invention relates to a method for producing a small-aperture ceramic membrane. The invention can produce a small-aperture ceramic ultrafiltration membrane on the surface of a support with an aperture of 50- 200 nm. The method comprises the following steps: treating the surface of the support with larger pore size with organic solution, covering the surface with coating solution with smaller sole particle size, allowing rapid gelatination of the coating under constant-temperature and constant-humidity conditions, preventing leakage of the sol, sun-drying or oven-drying the coating, and removing organic substances by means of solvent extraction or direct calcination, to obtain the small-aperture ceramic membrane. The produced small-aperture ceramic membrane doesn't be affected by the support. The production cycle of the membrane is short with low cost.

A vaginal speculum includes a pair of opposed blades. One of the opposed blades is movably mounted for controllable movement towards and away from the other of the pair of opposed blades. Each blade includes an elongate arcuate paddle defining an interior compartment between the paddles. A solid rounded lip defines the terminal end of each side and the distal end of the blades. The lips may comprise a unitary structure which may be integrally formed with the paddle or separately formed and attached to each paddle such as by welding or mechanical attachment. The solid rounded lips protrude laterally from the first and second sides and the distal end of the blade to provide a smooth brim configured to urge tissue away from the blade. The solid rounded lip is preferably flush with the interior compartment defined by each elongate arcuate paddle. The solid rounded lip has a major radius of at least 2 mm and preferably 2 mm to 5 mm and approximately ½ to 1/20 times the blade radius.

The present invention is the preparation process of stone material surface protecting agent. The preparation process includes adopting absolute ethyl alcohol as solvent, mixing with long chain alkyl alkoxy silane and hydrogenous methyl silicone oil at room temperature, and adding dibutyltin dilaurate as organic catalyst through stirring. When it is used, the stone material surface protecting agent is painted directly before letting stand for 24 hr and further construction without needing heating for crosslinking. It may be used in repairing fine holes and cracks without blocking the capillary tracts, and it can form excellent hydrophobic effect while not blocking inside water vapor to diffuse outwards.