33results about How to "Good performance" patented technology

A hierarchical data storage and retrieval index uses copy-on-write of a block ancestor path to allow concurrent multi-version read access and single writers, while providing a garbage collector that allows quick recycling of the copied blocks. A further layered tree index uses a copy-on-write concurrent multi-version meta tree above a layer of lock-protected blocks to provide multi-reader multi-writer access. Both indexes are efficient with multiple cores.

A system and method of the present invention revives a catastrophic code used for channel coding data. A data receiving circuit receives a digital input data sequence to be coded with a code having a distance spectrum containing an infinite component that corresponds to a finite hamming weight such that the code may cause catastrophic error propagation. The circuit is operative for periodically inserting known symbols into the digital input data sequence. An encoder, such as a convolutional encoder, is operatively connected to the data receiving circuit and encodes the digital input data sequence.

A vacuum booster and method includes a modular valve assembly having components held together by a snap connection. The modular valve assembly, includes an air valve adapted for receiving a push rod, a floating control valve (FCV), an air valve spring, a floating control valve (FCV) spring, an FCV support, and a spring seat. The spring seat is operatively attached by a snap connection to the air valve, and retains the FCV, air valve spring, FCV support, and FCV spring between the spring seat and the air valve. A second snap connection is utilized for attaching a push rod after the modular valve assembly is installed into a booster. The push rod may be installed after the otherwise fully assembled booster, including the modular valve assembly, has been tested.

The invention discloses a linear friction welding device. The linear friction welding device comprises a single-cam module, a double-cam module, a driving module, a feeding module and a base; the front end of the base is fixedly connected with the feeding module; the feeding module is hinged with the single-cam module; the double-cam module is arranged on the back side of the single-cam module; the driving module is arranged on the left side of the base; the driving module drives the single-cam module and the double-cam module through a first driving synchronous belt A and a second driving synchronous belt B ; and the single-cam module and the double-cam module are fixedly connected with the base. The linear friction welding device has the following advantages: the single-cam module drivesworkpieces to be welded to perform an up-down reciprocating motion; the double-cam module drives the workpieces to be welded to perform a left-right reciprocating motion; and under the condition of identical welded parts, the needed driving force is greatly reduced.

A multifunctional gas high-pressure in situ Raman test cell comprises an external high pressure cylinder, an internal high pressure cylinder is arranged in the external high pressure cylinder, and the front end of the internal high pressure cylinder is provided with a diaphragm; the tail end of the internal high pressure cylinder is arranged outside the external high pressure cylinder in an extension manner, and is fixedly connected with the tail end of the external high pressure cylinder through a fastener; and a high pressure gas source goes through the internal high pressure cylinder to the front end of the internal high pressure cylinder in order to press a sample to the diaphragm. The test cell can realize in situ test of the Raman spectrum of a material under high temperature, high pressure, special atmosphere, laser irradiation and other extreme conditions. The test cell can be used to test a powder, a block, a high temperature melt, a film and various forms of samples. The test cell can continuously monitor the Raman spectrum of the material in an in-situ manner in the heating, pressurizing and atmosphere changing process in order to realize continuous in-situ tracking of the structure change, the stability and the chemical reaction process of the material.

A plate material is drawn into a rectangular plate shape and the peripheral edge of each corner is pressed. A yoke (1) is formed, and the yoke (1) has a tongue-like flange (1a) projecting outward from a position below an upper end surface by a predetermined dimension. A resin frame (2) is insert-molded so as to cover the flange (1a). A magnet (3) is joined to the inside of the yoke (1), and a magnetic circuit where a magnetic gap (5) is formed is produced. A diaphragm (6) to which a voice coil (7) is joined is joined to a frame (2). When a speaker is produced in this way, joining strength between the yoke (1) and the frame (2) is increased and the height of the speaker is reduced. Further, a gap is eliminated from each corner of the yoke (1), and the speaker is excellent both in quality and performance where there is no magnetic leakage.

The invention relates to an environment-friendly high-performance plastic runway, and relates to the field of environment-friendly plastic runways. The environment-friendly high-performance plastic runway sequentially comprises a gravel lime soil layer, an adhesive stabilizing layer, an asphalt concrete layer and a plastic runway layer from bottom to top, and the plastic runway layer sequentiallycomprises a plastic bottom layer, a plastic buffer layer and a plastic surface layer from bottom to top; the plastic bottom layer is prepared from the following components: waterborne acrylate emulsion, polyether polyol, hydroxyethyl cellulose ether, water, a defoaming agent, a catalyst and a stabilizer; the plastic buffer layer comprises the following components: polyvinyl chloride, clay, a plasticizer and an anti-aging agent; and the plastic surface layer comprises the following components: a water-based acrylate emulsion, a water-based silicone acrylic emulsion, antiskid plastic particles,a water-based fluorocarbon emulsion, pigment, a wetting agent and a flame retardant. The only backup method of the plastic runway comprises the following steps: S1, excavating a base; S2, tamping thebase; S3, paving a runway foundation; and S4, paving runway plastic. The environment-friendly high-performance plastic runway has the effects of environmental protection and more excellent physical and mechanical properties.

The invention relates to sheet compositing equipment, belonging to the field of extrusion equipment. The sheet compositing equipment comprises a mechanical lifting device, a sheet preprocessing device, a sheet compositing device, a material arranging device and a winding machine, wherein the mechanical lifting device is arranged at the bottom of the sheet preprocessing device, the sheet compositing device is arranged at the end of the sheet preprocessing device, the material arranging device is arranged right below the sheet compositing device, and the winding machine is arranged at the end of the material arranging device; the sheet compositing device comprises a distributor and a co-extrusion die head, the co-extrusion die head is arranged at the end of the distributor which is arranged at the end of a processing unit. Compared with the prior art, the sheet compositing equipment has the beneficial effects that: as five extruding machines are arranged in the sheet preprocessing device, and the distributor is arranged, five layers of the sheet produced by coextruded sheet extruding equipment can adopt five different materials, and the compositing proportion of the material of each layer can be adjusted as required, therefore, the sheet has good performances.

The invention discloses a manufacturing method of an ultrathin-wall H65 copper-zinc alloy oval tube through high-frequency induction welding. The method comprises the steps of 1, uncoiling; 2, speed matching; 3, oval tube forming; 4, V-shaped angle forming; 5, high-frequency induction welding; 6, cooling and scar scraping; 7, tube type finishing; 8, eddy current inspection; 9, shearing and blanking; 10, waste removing; and 11, finished product conveying and curling. The finished copper-zinc alloy oval tube manufactured through high-frequency induction welding has good weld joint structure andperformance.

A micro light-emitting diode comprises a first-type semiconductor, a light-emitting layer, a second-type semiconductor, a first electrode and a second electrode. The first-type semiconductor comprisesa column body extending along a direction. The light-emitting substantially wraps the column body of the first-type semiconductor. The second-type semiconductor substantially wraps the light-emittinglayer. The first electrode is electrically connected with the first-type semiconductor. The second electrode is arranged on the second-type semiconductor and electrically connected to the second-typesemiconductor. Besides, a light-emitting device comprising the micro light-emitting diode is also proposed. The micro light-emitting diode is a stereoscopic light-emitting structure capable of emitting light towards a three-dimensional space, and since the micro light-emitting device can emit light towards the three-dimensional space so that the brightness of the light-emitting device can be improved.

The invention discloses a parallel-connection-type active filter and a current detection method thereof and belongs to the field of power. The parallel-connection-type active filter comprises an active filter main circuit. The active filter main circuit consists of a load, a converter, an inductor connected with the converter and a direct-current-side energy storage element. The current detection method of the parallel-connection-type active filter comprises the steps of calculating direct-current parallel-connection-type active filter qpii filtered by a low pass filter according to definition; disconnecting a channel when the sum of harmonic waves and reactive current is detected; performing inverse transformation if only the reactive current is required to be detected. An LC filter and the active filter are combined and used simultaneously, so that the shortcomings of high capacity and high cost of the active filter can be overcome, and a whole system can have good performance.

The invention relates to the technical field of asphalt modification, and particularly discloses SBS modified emulsified asphalt and a preparation method thereof. The preparation method of the SBS modified emulsified asphalt adopts a modification and emulsification integrated process; pretreatment needs to be carried out before the modification and emulsification integrated process; the pretreatment comprises the following steps: adding a pre-dispersed SBS modifier into matrix asphalt, and stirring at 150-190 DEG C to obtain an asphalt-SBS mixture; in the modification and emulsification integrated process, an asphalt-SBS mixture is directly emulsified into SBS modified emulsified asphalt by adopting liquid soap; the invention also discloses the SBS modified emulsified asphalt prepared by the method. The use performance and the stability of the SBS modified emulsified asphalt can be remarkably improved.

The invention discloses an NI-CVS-based air floating table position and attitude determination method. The method comprises the following steps: arranging five characteristic points on an air floating table, acquiring images, carrying out gray scale treatment on the acquired images, and extracting the characteristic points; reconstructing lost or faulty characteristic points according to characteristic point position and attitude information at one moment, predicated according to a last moment visual navigation algorithm when the characteristic points are shielded or characteristic extraction failures in order to continuously complete later position and attitude resolving; and calibrating a camera installing matrix and the positions of the characteristic points before the position and attitude resolving. The method allows the movement image of the air floating table and the change curve of the movement position and attitude of the air floating tablet to be displayed in real time and the movement data of the air floating table to be preserved in an assigned position. Compared with other air floating table position and attitude determination methods, the method disclosed in the invention has the advantages of simple treatment method, low cost system, high fault tolerance and good performances. The method disclosed in the invention also can be applied to spacecraft on-orbit-servicing and other spaceflight tasks.

The invention discloses a high-barrier PE material. The high-barrier PE material comprises, by weight, 60-80 parts of polyethylene, 5-10 parts of hydroxyethyl acrylate, 1-5 parts of triphenyl phosphite, 10-20 parts of a polymer/nano-SiO2 composite material and 2-6 parts of a flame retardant. The PE is modified with the polymer/nano-SiO2 composite material, so the barrier property of the PE material is improved.

The invention discloses an implementing method for preventing signals of coaxial filter from leaking. In the method, a device of box-shaped structure is arranged and comprises an external box-shaped structure, a cover board structure, a filter and a multi-section box-shaped structure; the filter is arranged in the internal cavity of the box-shaped structure and forms a signal channel with the box-shaped structure; a clapboard is arranged in the box-shaped structure to partition the internal cavity of the box-shaped structure into a plurality of blocking rooms; a concave groove is arranged on the contact face between the upper surface of the clapboard and the cover board; one end of the box-shaped structure is provided with a signal receiving port and the other end thereof is provided with at least two signal outputting ports, and the ports are in conducting connection with the box-shaped structure; an external transmission signal is transmitted into the box-shaped structure via the signal receiving port and transmitted to the signal outputting ports after the box-shaped structure and the filter induce with each other. And the invention also discloses a signal processing device for implementing the method.

Disclosed are a catalyst, its preparation and use in selective hydrogenation, which catalyst has a porous support grain on which are deposited palladium and silver, and at least one alkali and/or alkaline earth metal; the porous support contains a refractory silica, alumina and/or silica-alumina oxide, where at least 80 wt. % of the palladium is distributed in a crust at the periphery of the support, and at least 80 wt. % of the silver is distributed in a crust at the periphery of the support, the local content of palladium at each point along the diameter of the grain follows the same course as the local content of silver.

The invention discloses a thermo-sensitive epoxy resin composite material and a preparation method thereof. The composite material consists of 10-70 parts of a thermo-sensitive polymer, and 90-30 parts of epoxy resin, wherein the thermo-sensitive polymer is one or several kinds of polymers selected from homopolymers of N,N-dimethyl ethyl methacrylate or thereof derivatives, or copolymers of N,N-dimethyl ethyl methacrylate or thereof derivatives and other acrylic acid or acrylate monomers, and moreover the low-temperature critical solution temperature (LCST) of the composite material can be adjusted by changing the kinds and content of the comonomers. The composite material is simply prepared, and the thermo-sensitive polymer is uniformly mixed with the epoxy monomers, and then cured and shaped at a certain temperature. The property of the composite material is suddenly changed from hydrophilicity to hydrophobicity along with the change in the temperature, and the composite material can be applied in the technical fields such as smart coatings and functional plastic.

Provided is a catalyst including: a support including titanium oxide; an active catalyst component including vanadium oxide; and a co-catalyst including antimony and cerium, in which the catalyst is included in a deNox reduction reaction that decomposes nitrogen oxide. The catalyst may improve sulfur poisoning tolerance characteristics while improving the deNox efficiency at a temperature in a wide range from low temperature to high temperature.

An antireflection film includes an uneven structure layer that has an uneven structure in which a distance between protrusions is shorter than a wavelength of light of which reflection is to be suppressed and has an alumina hydrate as a main component, and an intermediate layer that is disposed between the uneven structure layer and a substrate. The uneven structure layer has a spatial frequency peak value of the uneven structure of 6.5 μm⁻¹ or greater and a film thickness of 250 nm or more, and the intermediate layer is constituted of a plurality of layers including at least a first layer, a second layer, a third layer, a fourth layer, a fifth layer, a sixth layer, a seventh layer, and an eighth layer in this order from the uneven structure layer side to the substrate side.

The invention relates to a screen which simplifies the structure and has excellent use performance. The screen (1) comprises a retention member (5) for retaining a first storage member (3) and a second storage member (4). The retention member (5) comprises a column (51) substantially vertical to the direction opposite to the first storage member (3) and the second storage member (4), extending along screen body; a pair of pole modules (53), respectively connected with a column (51) and the first storage member (3) and the second storage member (4). One end of each of the pair of pole modules (53) is respectively rotatably coupled to the first storage member (3) and the second storage member (4) and another end of each is rotatably coupled to the column (51).

The invention relates to nano thin sheet assembled nickel-iron hydroxide multistage microspheres and a preparation method thereof. With urea as an alkali source, with trisodium citrate as a complexing agent and with water and n-butyl alcohol as a reaction solvent, chemical solution mixed solvent heat is used for preparing the single or double layer nano sheet assembled layered double hydroxides NiFe-LDHs multistage microspheres. Firstly, a nickel salt, an iron salt, an alkali source and trisodium citrate are dissolved in the mixed solvent, and a reaction solution is prepared; and then the prepared reaction solution is treated under a solvothermal condition, and thus the regular-morphology single or double layer nano sheet assembled layered double hydroxides NiFe-LDHs multistage microspheres are obtained. Compared with the prior art, the method is simple, is low in cost, can synthesize the nickel-iron hydroxides multistage microspheres on large scale, and the nano sheet has the thickness of less than 2 nm.

The invention discloses a high-toughness plastic film, which is prepared from the following raw materials in parts by weight: 60 to 80 parts of polyurethane, 80 to 100 parts of polypropylene resin, 3to 7 parts of cellulose acetate butyrate, 5 to 13 parts of polyacrylamide, 1 to 5 parts of diamine propyl polydimethylsiloxane, 3 to 8 parts of dicumyl peroxide, 5 to 9 parts of oxidized polyethlene wax, 2 to 5 parts of aluminum sulfate, 1 to 3 parts of compatilizers, 3 to 8 parts of magnesium borate whiskers, 1 to 3 parts of magnesium stearate, 2 to 7 parts of kieselguhr, 5 to 10 parts of silicondioxide, 8 to 15 parts of hydroxy propyl cellulose, 5 to 12 parts of acetyl tributyl citrate, 2 to 6 parts of glass fiber and 3 to 8 parts of sodium alginate. The high-toughness plastic film has theadvantages of high toughness, good anti-stretching performance and the like, and has good use performance.

The invention discloses a splicing block iron core, a stator, a motor and a manufacturing method of the stator. The splicing block iron core comprises a coil, a framework and an inner core; the innercore is formed by laminating a plurality of silicon steel sheets; the inner core comprises a winding end and a splicing end; an inner concave part and a convex part are arranged on the two side edgesof the splicing end respectively; the framework is arranged outside the winding end in a sleeving mode; and the coil is wound outside the framework. According to the splicing block iron core, the convex parts and the inward concave parts of different splicing block iron cores can be spliced to form a stator structure of the motor; due to the fact that the inner core is formed by laminating the plurality of silicon steel sheets, a mold needed for punching is simple and low in cost; compared with circular punching, the utilization rate of a punching material can be improved; and meanwhile, due to the fact that the framework is arranged outside the winding end in a sleeving mode, when the coil is wound outside the framework, the coil cannot be directly in contact with the inner core, and theprotection effect on the coil is better, so that an automatic winding mode can be adopted, and the winding efficiency and the winding quality are improved.

The invention discloses an integrated structure of positive and negative electrodes of an implantable cardiac pacemaker, comprising a jacket, an elastic piece, a fixing ring and a sealing ring. The elastic piece is sleeved on the middle part of the jacket; The inner wall of the outer casing and the left and right ends of the elastic piece; the sealing ring is sleeved in the left and right fixing rings. The device can not only provide reliable contact (clamping force) with the electrode plug and the smallest possible insertion and extraction force, but also can pace the implantable heart when the epoxy top of the implantable cardiac pacemaker is fabricated. The positive and negative connectors of the device provide a reliable sealing environment to ensure that the performance of the main functional parts of the connector is intact, the structure is simple, and the processing is convenient, which further reduces the processing cost.

An apparatus for performing downlink or uplink processing in a wireless communication system and a data processing method. An apparatus for performing downlink processing in a wireless communication system to maintain efficiency of system bandwidth includes a sharing-ring buffer, a MAC-PHY interface, a security engine, and a DMA processor. The sharing-ring buffer is for storing multi-format data. The MAC-PHY interface is for receiving input data and storing the input data into the sharing-ring buffer to form stored data, the security engine is for retrieving stored data from the sharing-ring buffer, decrypting the retrieved data to form decrypted data and storing the decrypted data in the sharing-ring buffer, and the DMA processor is for accessing the sharing-ring buffer to obtain the decrypted data. The method and apparatus of the present invention is capable of improving the whole operating rate of the a wireless communication system and remarkably reducing the scale of the wireless communication system.

The invention relates to a delay modulation circuit. The delay modulation circuit comprises a signal input control module, a delay module and a counting module, wherein the signal input control moduleis provided with a first input leading-in end, a second input leading-in end and an input leading-out end; the time delay module is provided with a first delay input end, a second delay input end, afirst delay output end and a second delay output end; the input leading-out end is connected with the first delay input end; the second delay input end is connected with the first delay output end; the counting module is provided with a first counting input end, a second counting input end and a counting output end; the first counting input end is connected with the second delay output end; the second counting input end is connected with the input leading-out end; the counting output end is connected with the second input leading-in end; a voltage-stabilizing modulation voltage is applied to the delay module. By adopting the delay modulation circuit, the delay is basically unchanged when the working parameters of a chip are changed, thus making the chip performance of a semiconductor memory better. The invention further relates to a semiconductor memory comprising the delay modulation circuit.

The invention relates to a warm-keeping fabric with good usability. It includes a fabric body (1), the fabric body (1) is provided with a decorative layer (2) on the front and a thermal insulation layer (3) on the back. A lining layer is arranged on the back of the thermal insulation layer, and the lining layer includes a lining layer body woven by warp yarns and weft yarns. The warp yarns and weft yarns are interwoven into a three-up and three-down plain weave structure. The surface is provided with a jacquard layer, the upper surface of the jacquard layer is provided with a patch layer, and several patches are arranged on the patch layer, and the patches overlap each other; the lower surface of the lining layer body is provided with a breathable layer, and the lower surface of the breathable layer is provided with There is a fireproof layer, and the lower surface of the fireproof layer is provided with a photocatalyst coating. The invention makes it more comfortable to wear and stronger to take. The invention has good performance in use.