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133 results about "Uniform system" patented technology

Capsulectomy device and method therefore

InactiveUS6165190AEasy to useCost-effective in manufacture and operation and maintenanceEye surgerySurgeryHand heldEngineering
A surgical instrument for ophthalmic surgery, allowing the user to form a uniform circular incision of the anterior lens capsule of an eyeball, as part of an anterior capsulotomy. The capsulectomy device of the preferred embodiment of the present invention has first and second ends, with a rotor emanating from one end, the rotor having a cutting blade or bin situated at the distal end of the rotor, the rotor rotating in pivotal fashion up to 360 degrees, while simultaneously reciprocating the cutting blade at a consistent stroke so as to provide optimal incision edge and depth of the anterior lens capsule of the eyeball. The device is hand held and relatively compact, having provided therein a motor and gear reduction / transmission system for driving the rotor and providing the reciprocating action to the cutting blade or pin. The device further includes a power supply, which is illustrated as a separate component fed to the device via wire, as well as controls for initiating power, as well as varying the speed of the motor. Unlike the prior art systems, which generally have relied upon the skill of the surgeon to perform the radial incision by hand, the present system provides a relatively easy and uniform system for performing the radial incision which is believed to be safer, more uniform, and less time consuming than prior techniques.
Owner:NGUYEN NHAN

Multi-dimensional intelligent service point virtual desktop method and infrastructure

The invention discloses a multi-dimensional intelligent service point virtual desktop infrastructure. A transverse dimension consists of client equipment, an access point, a service switch point and a background service point so as to form a transmission path of a virtual desktop; and a longitudinal dimension consists of a company operating system, company application, user application, user data and settings so as to divide a virtual machine into a plurality of layers which are easy to manage. The entire infrastructure is managed through the access point, the service switch point and the background service point, and the centralized management of a background virtual machine / virtual application program / real machine and the delivery on demand of the virtual desktop can be realized. The background service point incorporates virtual machine management and real machine management into a uniform system, integrates the virtual machine management and the virtual application management and divides the virtual machine and the virtual application program and data on the virtual machine into a plurality of mutually independent layers. The transmission of the virtual desktop provides end-to-end network overlay by adopting a session initial protocol (SIP) and a remote transmission protocol.
Owner:TRANSOFT SHANGHAI

Reusable slippery water fracturing fluid for shale oil and gas reservoir

ActiveCN103275691ALow viscosityRapid Dispersion DissolutionDrilling compositionUniform systemWater quality
The invention discloses reusable slippery water fracturing fluid for a shale oil and gas reservoir. The reusable slippery water fracturing fluid for the shale oil and gas reservoir comprises the following components in percentage by weight: 0.02 to 0.08 percent of a resistance reducing agent, 0.7 to 1.5 percent of a discharge aid, 8 to 12 percent of an auxiliary discharge aid, 5 to 10 percent of an interfacial tension-reducing synergist, 0.05 to 0.1 percent of a clay stabilizer, 0.007 to 0.01 percent of a sterilizing agent, 0.04 to 0.06 percent of a scale inhibitor and the balance of water. The reusable slippery water fracturing fluid for the shale oil and gas reservoir has the beneficial effects that (1) the resistance reducing agent can be dispersed and dissolved quickly to form a uniform system, so the problem of difficulty in large-scale intermediate liquid preparation in a shale fracturing process is solved; (2) the slippery water fracturing fluid can be reused, so the treatment cost of return liquid is reduced; (3) the resistance reducing ratio of the slippery water is more than 75 percent, so large-displacement construction is realized, the requirement on pump injecting equipment is reduced, and the frictional resistance of the slippery water in a pipeline in a large-displacement fracturing construction process can be effectively reduced; and (4) the slippery water fracturing fluid has a wide application range, strong temperature adaptability and temperature adaptability, and low requirement on water quality.
Owner:PETRO KING OILFIELD TECH

Graphene conductive coating and preparation method thereof

The invention relates to a graphene conductive coating and a preparation method thereof. The graphene conductive coating comprises the following components in parts by weight: 0.01-10 parts of graphene, 1-30 parts of an alcohol-soluble coating, 20-50 parts of a diluent, 0.5-5 parts of a dispersing agent, 0.5-5 parts of a stabilizer and 0.1-1 part of a defoaming agent. The preparation method comprises the following steps: by taking the graphene as a conductive component and taking the alcohol-soluble coating as a film forming matter, adding other aids, grinding, performing ultrasonic oscillation, and performing film filtration, thereby obtaining a conductive coating in a uniform system. The alcohol diluent has an effect of diluting the coating, dispersion of the graphene is promoted, the dispersity of the graphene is effectively improved, and the graphene can stably exist for a long time. The types and amount of the diluent, dispersing agent and other aids are adjusted, so that the viscosity of the coating is controlled, the subsequent spraying, brushing and coating process is conveniently implemented, large-scale production is easily realized, and the graphene conductive coating is expected to be applied to the fields such as mobile phones, flat-panel displays, solar cells, transparent electromagnetic wave shielding and automotive window heat-conducting glass.
Owner:HUBEI UNIV OF TECH

Aqueous boron nitride coating capable of binding at low temperature and being used at high temperature

The invention discloses an aqueous boron nitride coating capable of binding at a low temperature and being used at a high temperature. The coating is prepared from 15-60 wt% of hexagonal boron nitride, 2-15 wt% of a composite high temperature binder, 1 wt% of carboxymethyl cellulose, 0.5 wt% of a thickener, 1 wt% of cobalt aluminate, 0.2 wt% of isooctanol, and the balance is demineralized water. Apreparation method of the coating comprises the following steps: mixing and stirring carboxymethyl cellulose used as a dispersant, the high-temperature binder, the thickener, cobalt aluminate used asa high-temperature pigment and demineralized water at a normal temperature to form a uniform solution, adding the hexagonal boron nitride and isooctanol used as a defoamer to the solution, and performing stirring until a uniform system is formed. The coating adopts an aqueous system, has no harmful substance volatilization during use, is clean and environmentally friendly, has good adhesion, anddoes not crack or spall in order to effectively block direct contact between a metal melt and the surface of a refractory material. Additionally, the coating has excellent stability and suspension capacity, and the stability and the suspension capacity do not change under high dilution.
Owner:SHANGQIU NORMAL UNIVERSITY

Method for preparing gradient directional porous cement based on two-phase pore former system freezing molding technology

InactiveCN106892674AAvoid defects such as pattern collapse and cracking caused by high temperature sinteringSimple processCeramicwareMaterials preparationPore distribution
The invention discloses a method for preparing a gradient directional porous cement based on a two-phase pore former system freeze molding technology, and belongs to the technical field of porous material preparation methods. Cement powder is stirred and mixed with a mixed solution based on a two-phase pore former system to form a uniform system, and a gradient directional porous cement material is obtained through freeze forming, freeze drying and maintenance in sequence; the porous material structurally comprises directional macropores and interior mesopores, the pore size distribution is 3 nm to 400 microns, the porosity is 40% to 65%, and the porous material has the characteristics of uniform pore distribution, various open-framework structures and excellent directional degree. According to the method, the pore passage morphology of the prepared gradient directional porous cement is regulated and controlled by changing the proportion of tert butyl alcohol to water, so that different application requirements are met; moreover, the preparation technology is simple and convenient, relatively low in cost and simple and mild in maintenance conditions, the problem of style collapse cracking caused by a traditional high-temperature sintering method is avoided, and the method is more energy-saving and environmentally-friendly.
Owner:OCEAN UNIV OF CHINA

Projection type light-uniforming system for touch screen

The invention discloses a projection type light-uniforming system for a touch screen, which comprises at least one infrared light source, at least one light guiding device, at least one optical module, at least one visible light source and at least one projection lens. The at least one infrared light source emits at least one infrared light; the at least one light guiding device is coupled to the infrared light source so as to guide the infrared light to the at least one optical module; the at least one optical module is connected with at least one imaging device, and the optical module receives the infrared light guided by the light guiding device and refracts the infrared light to the imaging device so as to form an infrared light image; the at least one visible light source is used for emitting at least one visible light, and the visible light is transmitted to the optical module and refracted to the imaging device to form a visible light image; and the at least one projection lens is used for receiving and refracting the visible light image and the infrared light image. The projection type light-uniforming system for the touch screen is a device which induces the infrared light source into a projector, in which the light can be uniformly projected on a projection screen by a projector system to thereby provide a uniform infrared light source for an optical touch system to use.
Owner:NLIGHTEN TRADING SHANGHAI

Preparation method for chalcogenide semiconductor/carboxylation PPV (polyphenylene vinylene) electroluminescence composite material

The invention discloses a preparation method for a chalcogenide semiconductor/carboxylation PPV (polyphenylene vinylene) electroluminescence composite material. The electroluminescence composite material is prepared by means of complexation between semiconductor metal salt and carboxylation PPV firstly and then by means of hydrothermal reaction, the semiconductor metal salt is selected from soluble nitrate or halide of Zn, Cd, Pb or Bi, and the carboxylation PPV refers to poly[2-methoxy-5-(5'-carboxypentyloxy) p-phenyl acetylene]. The carboxylation PPV serving as an organic phase to be doped and composited with an inorganic semiconductor, and the carboxylation PPV is connected with the inorganic semiconductor by means of coordination bonds, so that inorganic particles are uniformly dispersed, the two phases form a uniform system, energy and charge transfer on the two phase interfaces is improved, the composite material has processibility of polymer and photoelectric property of semiconductor materials, and the novel electroluminescence material high in stability and luminous efficiency is provided for the fields such as large-area flexible display and solid-state luminescence and the like.
Owner:HEFEI UNIV OF TECH

System and method for optically imaging objects on a detection device by a pinhole aperture

Systems and method for optically imaging objects and in particular optical patterns or codes onto a detection device by a pinhole aperture are described. According to an embodiment of the invention these systems have optical attenuation elements between the illumination devices and the object which substantially compensate the system-inherent imaging detects caused by the pinhole aperture and in particular the system-inherent peripheral decrease in brightness of an image of the object formed by a pinhole aperture on the detection device. According to an embodiment of the invention, the optical attenuation elements change the illumination intensity of the object in such a manner that the central areas of the object are illuminated at a lower light intensity than its peripheral areas. As a result of the subsequent imaging of the object by a pinhole aperture, the central areas of the object are imaged onto the detection device at a higher light intensity than the peripheral areas of the object. The superimposition of the two effects enables the imaging system according to the invention to achieve a substantially uniform system-inherent brightness distribution on the detection device.
Owner:ROCHE DIAGNOSTICS OPERATIONS INC

Preparation method for chitosan/hydroxyapatite composite hydrogel

The invention discloses a preparation method for chitosan / hydroxyapatite composite hydrogel. The preparation method comprises the following steps of taking chitosan, lithium hydroxide, sodium hydroxide, urea, hydroxyapatite and water in percentage by weight; mixing the components aforementioned and then swelling, freezing, unfreezing, filtering, centrifuging and defoaming to obtain a chitosan / hydroxyapatite mixed solution; and injecting the chitosan / hydroxyapatite mixed solution in a die, then soaking in a coagulation bath, and performing coagulation and precipitation to generate the chitosan / hydroxyapatite composite hydrogel. According to the preparation method disclosed by the invention, chitosan is dissolved by a basic solvent system, thus avoiding the adverse effects of molecular weight reduction, wider distribution and the like brought by acid-catalyzed hydrolysis in the acid chitosan solution, and ensuring the existence of the macromolecular chains of chitosan in a highly-swelling state and the closer arrangement of the macromolecular chains of chitosan. In this way, hydroxyapatite is dispersed in the solution in a nanometre state, and a mesh-shaped structure formed by chitosan is used as a template to form a uniform system, thus improving the mechanical property of the chitosan / hydroxyapatite composite hydrogel.
Owner:ZHEJIANG UNIV

Method for preparing oriented porous silicon nitride ceramics based on gelatin solution freeze-drying technology

The invention discloses a method for preparing oriented porous silicon nitride ceramics based on a gelatin solution freeze-drying technology. Silicon nitride powder mixed with a sintering addition agent, and a gelatin solution at certain concentration are mixed to form a uniform system, then vacuum bubble removing is carried out, and the mixture is cooled under the temperature of 1-20 DEG C to be promoted to be gelatinized to obtain colloid; the colloid is frozen at the temperature of minus 90-minus 10 DEG C, low-temperature vacuum drying is carried out to obtain a green body, the green body is sintered under the nitrogen atmosphere after gelatin discharging is carried out, and finally the oriented porous silicon nitride ceramics is obtained. According to the method for preparing the oriented porous silicon nitride ceramics based on the gelatin solution freeze-drying technology, the features that a gelcasting blank is high in strength and by means of a freeze-drying method, hole gaps are evenly distributed, the orientation degree is superior, and the hole communication performance is good are combined, and the gelatin superior in the water storage capability is used for being prepared into the gelatin solution to be mixed with the silicon nitride powder to prepare the oriented porous silicon nitride ceramics for the first time.
Owner:西安晶科立芯半导体设备有限公司

Preparation method of negative ion antibacterial adsorption material composition

The invention provides a preparation method of a negative ion antibacterial adsorption material composition. The method is characterized in that (a) 13X molecular sieve raw powder accounting for 60 to75 percent of the total mass of the composition, alkali metal oxides accounting for 10 to 20 percent of the total mass of the composition, tourmaline powder accounting for 10 to 20 percent of the total mass of the composition, and the balance of bonding agents and hole expansion agents are proportionally mixed to form mixed powder of a uniform system; (b) the mixed powder is soaked into a water solution of AgNO3, then, ultrasonic concussion is performed to form suspension; next, a NaOH solution is added for regulating pH to 10; a mixed solution is formed. (c) the mixed solution is sealed andheated under the hydrothermal condition; after the separation, sintering is performed at high temperature; crushing is performed to obtain the composition. Compared with the prior art, the preparationmethod provided by the invention has the advantages that the cost is low; for indoor pollution gas, the adsorption capability is realized; the decomposition and desorption prevention performance is also realized; a certain number of negative ions can also be released; the adsorption effect is promoted; beneficial effects are achieved on the human body.
Owner:慕林健康负氧离子医用建材(深圳)集团有限公司

Preparation method of high-performance organic bentonite for oil-based drilling fluid

The invention belongs to the technical field of petroleum chemical industry, and relates to a preparation method of high-performance organic bentonite for an oil-based drilling fluid. The preparation method comprises the steps: dissolving 55-75 parts of a sodium-based bentonite dry material in 600-900 parts of deionized water, to form a suspension system a; mixing and dissolving 15-35 parts of a quaternary ammonium organic modifier in 100-300 parts of a solvent, to form a uniform system b; dissolving 10-15 parts of an organic auxiliary agent in 100-150 parts of a solvent, to form a uniform system c; adding the system b to the suspension system a, carrying out a reaction for 1-2 h at the temperature of 70-90 DEG C, to form a uniform system d; adding the system c to the suspension system d, and carrying out a reaction for 1-2 h at the temperature of 70-90 DEG C; and cooling the product to room temperature, washing off excess ions in the product, filtering, finally, drying the solid product in a 60-80 DEG C vacuum environment, and crushing and sieving to obtain the product. The performance of the organic bentonite can be greatly improved, and the good-quality organic bentonite for the oil-based drilling fluid is obtained and is favorable for improving the rheological property, the filtration loss resistant performance and the cuttings carrying capacity of the drilling fluid.
Owner:CHINA PETROLEUM & CHEM CORP +1
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