32results about How to "Avoid excessive losses" patented technology

The invention discloses an overdrive transmission device convenient for steering switching. The transmission device comprises an output gear (1), a driving shaft (2) for providing power for the rotation of the output gear (1), and a turning gear set (5) for realizing reversing rotation of the output gear (1); a forward gear (3) sleeves one end, close to the output gear (1), of the driving shaft (2); the forward gear (3) is engaged with the output gear (1); the driving shaft (2) can be locked with the forward gear (3) so that the output gear (1) can be driven to rotate forward by use of the forward gear (3). The overdrive transmission device convenient for steering switching is capable of smoothly realizing steering switching of the output gear and effectively saving energy source.

The optical DPSK demodulator converts phase into amplitude variations by delaying one path of an interferometer by one bit period. This operation includes a differentiation of the transmitted signal, which must be counteracted by applying a precoder at the TX side. By variation of the delay within the interferometer the differentiation will be changed. A reduction of the delay results in an emphasis of higher frequencies. This can be used to counteract the low pass behaviour (after detection) produced by narrowband optical filters. A penalty reduction from >2 dB to ~1 dB is expected.

The invention discloses an overdrive transmission device convenient for steering switching. The transmission device comprises an output gear (1), a driving shaft (2) for providing power for the rotation of the output gear (1), and a turning gear set (5) for realizing reversing rotation of the output gear (1); a forward gear (3) sleeves one end, close to the output gear (1), of the driving shaft (2); the forward gear (3) is engaged with the output gear (1); the driving shaft (2) can be locked with the forward gear (3) so that the output gear (1) can be driven to rotate forward by use of the forward gear (3). The overdrive transmission device convenient for steering switching is capable of smoothly realizing steering switching of the output gear and effectively saving energy source.

The invention relates to a light-weight and high-strength thermal insulation gypsum for exterior walls. The raw materials of the thermal insulation gypsum for exterior walls include the following components in parts by mass: 100 parts of building gypsum, 5 to 15 parts of cement, micro vitrified 40-60 parts of beads, 120-170 parts of water, 0.2-0.6 parts of adhesive, 0.2-0.5 parts of water-retaining agent, 0.3-0.9 parts of water reducing agent, 0.2-0.5 parts of retarder, 0.4-1.2 parts of polymer fiber. The present invention adopts various methods such as particle gradation optimization on the whole, water reducing agent, etc. to reduce the water demand under the standard working consistency, cement to increase hydration products, and retarder compounding to enhance and modify the thermal insulation gypsum in the outer wall to prepare The lightweight and high-strength external wall internal insulation gypsum not only has excellent thermal insulation performance, which can greatly reduce the energy consumption of building operation, but also has high strength. It solves the strength and workability problems of thermal insulation gypsum on the basis of low density and good thermal insulation performance.

Disclosed is a ubiquitous terminal-oriented three-dimensional mesh model continuous multiresolution coding method. The method comprises: a server end using a feature-enhanced quadric error metric method to simplify a mesh model; the server end constructing a resolution continuously-adjustable multiresolution mesh structure on the basis of the simplification process; the server end transmitting the resolution continuously-adjustable multiresolution mesh structure to a ubiquitous terminal; the ubiquitous terminal determining a resolution size corresponding to the received multiresolution mesh structure on the basis of the resolution size of a terminal screen and of resolution information carried by the mesh structure. Implementation of embodiments of the present invention prevents the problem of the three-dimensional mesh model having excessive loss in mesh feature when the resolution is relatively low, thus preventing the problem found in a multiresolution construction method of severe distortion when at relatively low resolution, and additionally, improving cases of mismatch between the model resolution and the screen resolution.

The invention discloses a manufacturing method of a transistor. The method comprises the following steps: providing a semiconductor substrate; successively forming a protective layer, an etching barrier layer and a pseudo grid material layer on the semiconductor substrate; performing first etching on the protective layer, the etching barrier layer and the pseudo grid material layer to form pseudo grids, and a residual etching barrier layer and a residual protection layer which are disposed below the pseudo grids; forming an interlayer dielectric layer on the semiconductor substrate between the pseudo grids; removing the pseudo grids to form a groove exposing the residual etching barrier layer; removing the residual etching barrier layer and the residual protection layer which are disposed in the groove to expose the substrate; and filling the groove exposing the substrate with a grid dielectric layer and a metal material to form a metal grid electrode. According to the invention, through additionally arranging the etching barrier layer on the protective layer, etching with the pseudo grids removed is enabled to well stop at the etching barrier layer, such that the requirements of pseudo grid structure etching and interlayer dielectric layer loss for the thickness of the protective layer are balanced, the performance of the formed transistor is improved, and the yield of the formed transistor is improved.

The invention discloses a hyperpolarized magnetic resonance imaging method based on fixed-variable angle optimized excitation, and relates to the field of magnetic resonance imaging. The present invention combines the advantages of fixed-angle excitation and variable-angle excitation, and divides the excitation into two stages: fixed-angle excitation and variable-angle excitation, that is, the first n * The second excitation adopts the fixed-angle excitation method, and the subsequent N‑n * The secondary excitation adopts the variable-angle excitation method (where N is the total number of excitations), and at the same time selects the appropriate fixed-angle excitation parameters, so that the reconstructed MR image has higher SNR and better image quality, and the algorithm is robust. And noise, artifacts, etc. are significantly reduced compared with the prior art.

The invention relates to sulfated oligosaccharide zinc and a preparation method thereof. The sulfated oligosaccharide zinc is prepared by taking dried frond of muriculate eucheuma as a raw material through process links of carrying out alkali treatment, extracting sulfated polysaccharide, preparing sulfated polysaccharide powder, preparing sulfated oligosaccharide powder, carrying out zinc impregnation, carrying out three-grade ultrafiltration separation, vacuum concentration, spray drying and the like. The sulfated oligosaccharide zinc prepared by the preparation method provided by the invention has high zinc content and relatively high content of sulfate groups, so that the sulfated oligosaccharide zinc has good physiological activity. The sulfated oligosaccharide zinc and the preparation method thereof have the advantages that the technology is advanced and reasonable, a processing process has strong controllability and expected economic benefits are good.

The invention discloses a method for manufacturing a semiconductor device, which comprises the following steps of: providing a semiconductor substrate, wherein the semiconductor substrate is N-type doped; forming a grid structure on the semiconductor substrate; performing ion implantation to form a light doped source region and a light doped drain region on the semiconductor substrate, wherein the implantation ions of the light doped source region and the light doped drain region are boron-containing ions; forming a gasket oxide layer on the semiconductor substrate; and performing plasma treatment on the gasket oxide layer. The plasma treatment can reduce the hydrogen content of the gasket oxide layer, and can also reduce diffusion of the doped ions of the light doped source region and the light doped drain region in subsequent annealing treatment to the gasket oxide layer so as to avoid over loss of the excessive ions.

The invention relates to the technical field of papermaking, and discloses an aluminum foil backing paper with moisture-proof and antibacterial functions and a preparation method thereof. The aluminum foil backing paper includes the following raw materials in parts by weight: 40-50 parts of softwood pulp, 50-60 parts of hardwood pulp, 15-25 parts of talcum powder, 20-25 parts of aluminum sulfate, 18-23 parts of alkenyl succinic anhydride, 5~8 servings of calcium oxide-sodium alginate / Bletilla striata polysaccharide-licorice essential oil microcapsules. During the preparation process, calcium oxide-sodium alginate / Bletilla striata polysaccharide-licorice essential oil microcapsules are added to the sizing solution. The present invention adopts calcium oxide-sodium alginate / Bletilla striata polysaccharide-licorice essential oil microcapsules as a moisture-proof antibacterial agent, which can meet the anti-mildew requirements of aluminum foil backing paper and cigarettes in low-humidity and high-humidity environments, and can prevent excessive licorice essential oil under low humidity. Loss, so that the antibacterial and anti-mildew effect of the aluminum foil backing paper is more durable.