33results about How to "Improve breathability" patented technology

The invention overcomes the deficiencies of the prior art by providing a rapid approach for isolating binding proteins capable of binding small molecules and peptides. In the technique, libraries of candidate binding proteins, such as antibody sequences, are expressed in the periplasm of gram negative bacteria and mixed with a labeled ligand. In clones expressing recombinant polypeptides with affinity for the ligand, the concentration of the labeled ligand bound to the binding protein is increased and allows the cells to be isolated from the rest of the library. Where fluorescent labeling of the target ligand is used, cells may be isolated by fluorescence activated cell sorting (FACS). The approach is more rapid than prior art methods and avoids problems associated with the outer surface-expression of ligand fusion proteins employed with phage display.

The invention relates to a space gridding printing method of a 3D printing sand mold. Regarding a single-material casting sand mold for a large casting, when three-dimensional modeling is carried out on the sand mold for casting, an original solid sand mold has a solid wall thickness with enough size and serves as a "facing sand layer" for resisting scouring resulting from molten metal during pouring, and space gridding is carried out on the other parts, so that the original solid state in the sand mold is changed into space gridding which is supported by multiple groups of space frameworks and is internally provided with loose sand not sprayed with a binder. The characteristic of one-time forming of a complex structure is directly achieved through 3D printing. A 3D printing method for the space gridding sand mold is provided. By changing the structure of a gridding area, "a substitute of the back sand layer" is printed out. According to the method, the gas evolution amount of the sand mold is reduced, the air permeability of the sand mold is improved, the interior of the sand mold is gridded, the addition amount of the binder can be reduced, the baking time of the sand mold is shortened, the cost is saved, and the method is applied to the technical field of casting production.

Provided is a seam-penetrating drilling hydrofracturing gas extracting method. The method includes that a target drill hole and a hole for penetrating a coal seam are preset as a hydrofracturing free surface; a chambering section of the target drill hole is expanded, and a sleeve is put into the drill hole, fixed and connected with a separating chamber. High-pressure water enters the fracturing drill hole to fracture a coal body, and a fracturing gap is gradually expanded until the gap is communicated with the hole. The water pressure and water amount are increased, and the coal body around the gap is washed. Water flow carries gas and the coal body to pass through the target drill hole to enter the chamber, the gas is extracted, and separation of the gas is achieved. After the coal body is washed, a macro gap communicating the fracturing drill hole and the target drill hole is formed. During extraction, the gas leaks into the gap, flows into the target drill hole and the hydrofracturing drill hole, and a gas flowing mode is changed fundamentally. The gap is equivalent to extension of the length of the target drill hole and the hydrofracturing drill hole in the coal seam, contact area between the gap and the coal body is increased, and a gas extraction effect can be improved.

The invention relates to the textile industry, in particular to a flame-retardant and antistatic fiber multifilament. The fiber multifilament is of a spiral intertwined structure and composed of flame-retardant polyester fiber, polyester antistatic fiber and aramid yarn, wherein the flame-retardant polyester fiber comprises a polyester center yarn and a flame-retardant layer wrapping the center yarn, the thickness of the flame-retardant layer is 10-50 microns, the cross section of the polyester antistatic fiber is in a cross shape, the four top ends of the cross shape are all triangular, and four independent cavities are formed in the cross section of the polyester antistatic fiber. The specific surface area of the polyester antistatic fiber is increased, and the stability and durability of the antistatic function of the polyester antistatic fiber are improved; through the design of the four independent cavities, the air permeability and comfort level of the polyester antistatic fiber are improved; the flame-retardant polyester fiber is flame-retardant polyester continuous fiber dyed with fluorochrome; when a fire occurs, the fluorochrome plays a role in warning, so that using safety is improved.

The invention relates to a moisture-absorbing and breathable wool composite fabric, comprising wool fiber and vinylon fiber, the specification of the wool fiber is 85s-150s in fineness, and the length is 95-115mm; the specification of the vinylon fiber is 3.5-4.5dtex×50 ~ 75mm; It is characterized in that it also includes ramie fiber and aramid fiber. The invention has the advantages that ramie fiber and aramid fiber are added in the wool composite fabric, the ramie fiber can absorb moisture, and the aramid fiber has a certain hardness, which can support a part of the cavity and improve the air permeability of the fabric.