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141results about How to "Superior performance" patented technology

Transmitter, receiver and method for controlling multiple input multiple output system

Provided is a method of controlling a multiple input multiple output (MIMO) system. One embodiment of the method includes the steps of: estimating, at a receiver, a MIMO channel and detecting data streams using a successive interference cancellation scheme; calculating, at the receiver, S and P using the estimated channel and then feeding back information corresponding to (P1, P2, . . . , PM-1, SINR5M) to a transmitter, and determining, at the transmitter, a transfer rate and transmission power perstream using the fed-back information. Another embodiment of the method includes the steps of: estimating, at a receiver, a MIMO channel and detecting data streams using a signal received from an antenna; extracting, at the receiver, a feedback parameter to be fed back to the transmitter using the estimated channel, and feeding back the feedback parameter to the transmitter, and determining, at the transmitter, a stream to be allocated to the receiver from among the streams of the transmitter using the fed-back parameter and a data transfer rate per stream, wherein the feedback parameter is information corresponding to a successive interference cancellation order and a signal-to-interference-plus-noise ratio (SINR) per stream reflecting successive interference cancellation.
Owner:ELECTRONICS & TELECOMM RES INST

Preparation method of novel environment-friendly phosphite ester antioxidant

The invention relates to a novel environment-friendly phosphite ester antioxidant, wherein a preparation of the novel environment-friendly phosphite ester antioxidant comprises the following steps of: taking cashew nut shell oil extractive such as anacardol or hydrogenated cashew phenol and phosphorus trichloride as raw materials, and reacting according to the molar ratio of the anacardol or the hydrogenated cashew phenol to the phosphorus trichloride of (3.0:1.0)-(3.5:1.0) to prepare a liquid phosphite ester antioxidant product without a solvent and a catalyst. The preparation method is simple in technology, the raw materials are low in price and easy to obtain, the antioxidant tris-(nonyl phenol) phosphite ester (TNPP) can be replaced by the synthesized product to be taken as the antioxidant and the stabilizing agent in the fields such as nature rubber, synthetic rubber, emulsion, plastic and the like, so that the phosphite ester antioxidant not only is better in emulsification performance, hydrolysis resistance and thermal stability performance compared with the TNPP, but also has the characteristics of being low in price and environment-friendly, thereby according with the future development tendency of the antioxidant, and the antioxidant which is synthesized by taking the anacardol as the raw material is the reaction type antioxidant having double bonds.
Owner:NANXIONG ZHIYI FINE CHEM

Preparation method of indoor flatting powder paint

The invention relates to a preparation method of indoor flatting powder paint, which is characterized by comprising the following steps: adding polybasic acid or acid anhydride, polyalcohol, catalyst and antioxidant into a reaction kettle, mixing, introducing nitrogen, heating to carry out esterification reaction or ester exchange reaction until the reaction liquid is completely clear, carrying out vacuum polycondensation until the acid value is 40-200mg KOH/g and the viscosity is 10-50 poise, cooling, and discharging to obtain the light yellow transparent or semitransparent solid component A polyester resin; adding polybasic acid or acid anhydride, polyalcohol, catalyst and antioxidant into a reaction kettle, mixing, introducing nitrogen, heating to carry out esterification reaction or ester exchange reaction until the reaction liquid is completely clear, carrying out vacuum polycondensation until the acid value is 10-50mg KOH/g and the viscosity is 30-100 poise, cooling, and discharging to obtain the light yellow transparent or semitransparent solid component B polyester resin, wherein the molecular weight of the component A polyester resin and the component B polyester resin are respectively controlled at 1000-10000 dalton; evenly mixing the component A polyester resin, component B polyester resin and polybasic organic acid to obtain a component C polyester resin; and mixing the component C polyester resin, epoxy resin E-12, barium sulfate, titanium white, leveling agent, brightener, physical flatting agent and benzoin to obtain the indoor flatting powder paint. The synthesis method has the advantages of diversity and the like, and can easily implement industrialized mass production.
Owner:广东大盈新材料科技有限公司 +1

Geopolymer chemically-bonded ceramic tile and preparation method thereof

The invention relates to a geopolymer chemically-bonded ceramic tile and a preparation method thereof. The geopolymer chemically-bonded ceramic tile is prepared from solid wastes like fly ash, filtered steel and copper slag, and industrial-grade chemical raw materials. The unburned ceramic tile is prepared from, by mass, 60 to 75% of the solid wastes, 19 to 38% of a liquid activator, 1 to 3% of a base-material additive and 1 to 3% of a compound liquid additive by procedures like mixing, sieving and granulating. Due to implementation of a firing-free process, energy conversation and consumption reduction can be realized; pollution is reduced; meanwhile, performances of the geopolymer chemically-bonded ceramic tile can reach national standards of fired ceramic tiles. The geopolymer ceramic tile does not need to introduce calcined kaolin, and after 12 to 48 hours of easy and practicable special maintenance, a ceramic bonded three-dimensional network body is rapidly formed, so the ceramic tile reaches and is superior in a part of performances to the 60-day-age level of similar geopolymer materials; limited mineral resources are not consumed; and energy consumption of calcination is avoided. The geopolymer chemically-bonded ceramic tile provided by the invention can change wastes into treasures, significantly saves energy and reduces consumption, can be used as a novel building material and has extensive application prospects.
Owner:JINGDEZHEN CERAMIC INSTITUTE

Thermal spray coatings and applications therefor

This invention relates to coatings for a metal or non-metal substrate comprising (i) a thermal sprayed bondcoat layer applied to said substrate comprising an alloy of MCrAlM′ wherein M is an element selected from nickel, cobalt, iron and mixtures thereof, and M′ is an element selected from yttrium, zirconium, hafnium, ytterbium and mixtures thereof, and wherein M comprises from about 35 to about 80 weight percent of said alloy, Cr comprises from about 15 to about 45 weight percent of said alloy, Al comprises from about 5 to about 30 weight percent of said alloy, and M′ comprises from about 0.01 to about 1.0 weight percent of said alloy, said alloy thermally sprayed from a powder having a mean particle size of 50 percentile point in distribution of from about 5 microns to about 100 microns, said bondcoat having a surface roughness of at least 200 micro-inches, and said bondcoat having a thermal expansion of about 6.5 millimeters per meter or less between a temperature of from about 25° C. to about 525° C., and (ii) a thermal sprayed ceramic layer applied to said bondcoat layer; wherein said coating has a helium leak rate of less than 6×10−6 standard cubic centimeters per second. The coatings are useful for extending the service life under severe conditions, such as those associated with metallurgical vessels' lances, nozzles and tuyeres.
Owner:PRAXAIR ST TECH INC

Preparation method for synthesizing ultra-thin metal alloy nanosheet array material by means of hydrotalcite topological transformation

The invention discloses a preparation method for synthesizing an ultra-thin metal alloy nanosheet array material by means of hydrotalcite topological transformation, and belongs to the technical field of inorganic advanced nano materials. The preparation method includes the steps that a vertical hydrotalcite nanosheet array is prepared on the surface of a conductive foam substrate; an ethylene glycol solution of sodium hydroxide is used for reducing the hydrotalcite nanosheet array so that a metal alloy nanosheet array can be prepared; and according to the dimensions of alloy nanosheets, the thickness is 1.5-4 nanometers, and the size is 100-800 nanometers. The hydrotalcite nanosheet array can be prepared through a hydrothermal method, the alloy nanosheet array is prepared through the mild homogeneous-phase reduction hydrotalcite nano array by controlling dynamics reaction steps. The alloy nanosheet array prepared through the method is high in specific surface area, good in stability, high in activity, low in price and capable of being used as (including but not limited to) an electrolyzed water hydrogen evolution cathode catalytic material and an electrolyzed water oxygen evolution anode catalytic material.
Owner:BEIJING UNIV OF CHEM TECH

Laminating device and integrated die laminating device

The invention discloses a laminating device. The laminating device comprises a diaphragm conveying mechanism for discharging and conveying rolled diaphragms; a positive electrode feeding mechanism which is used for continuously conveying single positive electrode plates; a negative electrode feeding mechanism which is used for continuously conveying single negative electrode plates; a laminating mechanism which reciprocates between the positive electrode feeding mechanism and the negative electrode feeding mechanism and receives the diaphragms, the positive electrode plates and the negative electrode plates, so that the diaphragms are pressed on the laminating mechanism and then move along with the laminating mechanism to form a Z-shaped diaphragm, wherein the positive electrode plates andthe negative electrode plates are alternately laminated on the Z-shaped diaphragm to form a Z-shaped laminated sheet; a diaphragm cutting mechanism which is used for cutting off the diaphragm supplyof the diaphragm conveying mechanism to the laminating mechanism after the laminating mechanism finishes laminating; and a rubberizing mechanism which is used for rubberizing the Z-shaped laminated sheet to form a battery cell. The defects of low speed and high labor intensity of manual feeding are overcome, the production cost is reduced, the lamination efficiency is improved, and modern automatic production integrated with die cutting and lamination is realized.
Owner:哈工大机器人(中山)无人装备与人工智能研究院

Autorotation type soilless planting greenhouse capable of acquiring natural energy in multiple directions

The invention relates to an autorotation type soilless planting greenhouse capable of acquiring natural energy in multiple directions. A base and water pool part has a disc-shaped masonry and cement structure which is constructed under the ground level and has an upward opening; a plurality of rail supports are arranged at the periphery of the structure; an annular rail is erected on the rail supports; a transparent inflated outer cover part is located on the annular rail through rollers which are arranged at the periphery of the bottom of the transparent inflated outer cover part and an autorotation driving mechanism; an energy acquisition device comprises a hot airflow turbofan power generation device which is arranged on the top of the transparent inflated outer cover part, a solar heat collection device, and geothermal pipes which are arranged in a water pool; and a three-dimensional planting frame part is arranged in internal space of a transparent inflated outer cover. The ground temperature, sunlight and hot airflow power generation produced by the transparent inflated outer cover are acquired by using the water pool and the geothermal pipes; the solar heat collection device acquires, stores and releases heat energy to regulate and control the atmospheric temperature in the greenhouse; and the autorotation motion of the greenhouse is driven by the electric power generated by the greenhouse so as to finish the circulation of a nutrient solution, lighting and ultrasonic spraying.
Owner:毕一凡 +1

Strain insulator string for multi-division transmission line

The invention provides a strain insulator string for a multi-division transmission line, belonging to the technical field of multi-division overhead transmission lines. The string comprises a first group of U-shaped hanging rings, a second group of U-shaped hanging rings of a towing plate, a first dual-yoke plate, a first right-angle hanging plate, a ball head hanging ring, an insulator, a bowl head hanging plate, a ladder-shaped four- hole yoke plate, an extended pull rod, a second right-angle hanging plate, a second dual-yoke plate, a third dual-yoke plate, six groups of hardware strings and six sub-wires, which are mutually connected in sequence. The strain insulator string is applied to the places at the altitude of 3000m and below. Compared with the prior art, the strain insulator string has high reliability and can reduce the working capacity of construction and maintenance; performances of the strain insulator string are good, the corona voltage of the strain insulator string goes beyond the requirement of the 3000m altitude, and the electrical loss of line operation is less; and the problem that a shading ring is touched by the wires does not exist, and the problem of wire abrasion can be solved completely.
Owner:江苏捷凯电力器材有限公司 +2
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