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1923results about How to "Guaranteed liquidity" patented technology

Method for preparing hollow ball and hollow ball with complex structure by template method

The invention belongs to the field of materials with a hollow structure, in particular to a method for preparing hollow spheres of minerals, metals and organic matters and hollow spheres with compound structures as well as hollow spheres with photic, electrical, magnetic and catalytic properties and hollow spheres with compound structures thereof by taking a polymer hollow sphere as a template. The invention prepares the hollow spheres with compound structures by taking the polymer hollow sphere as the template and combining sol-gel, settlement reaction and redox process through the method of forcing interface or surface settlement, removes the template polymer through high sintering or selective extraction of a solvent to obtain the hollow spheres of minerals, metals and organic matters. The structure and the size of the hollow sphere can be controlled through controlling the reagent activity, the feeding mode, the reagent concentration and a circulation reaction method; besides, compounding of various matters can be realized; the hollow sphere of the invention not only has good dispersing performance, but also has excellent strength and size stability. The invention relates to the application of the materials with a hollow structure.
Owner:INST OF CHEM CHINESE ACAD OF SCI

Improved parallel channel convolutional neural network training method

InactiveCN107092960AGuaranteed liquidityOvercoming the difficulty of gradient instabilityNeural architecturesNeural learning methodsAlgorithmEngineering
The invention relates to an improved parallel channel convolutional neural network training method. The improved parallel channel convolutional neural network training method comprises steps that characteristic extraction of data of the convolutional neural network is carried out through utilizing direct connection and convolutional channels to acquire characteristic matrixes; the characteristic matrixes are merged, and data dimension reduction is further carried out; the convolutional neural network is trained, and a loss value of network training at present is calculated; error items and a weight gradient of each layer are calculated; whether the network is in a convergence state is determined according to the loss value, if not, an initialization parameter of the convolutional neural network is adjusted according to the weight gradient, and re-training is further carried out; if yes, the network training result is outputted. The method is advantaged in that data circulation in the network can be guaranteed through introducing the direct connection channel, a problem of gradient instability during deep convolutional neural network training is solved, and deeper networks can be trained; through maximum pooling and mean value pooling, characteristic matrix dimensions of two times of characteristic extraction can be made to be consistent, and advantages of two pooling methods are integrated.
Owner:CIVIL AVIATION UNIV OF CHINA

Preparation method of reinforced composite wear-resistant lining board of precast framework

The invention discloses a preparation method of a reinforced composite wear-resistant lining board of a precast framework. The prepared reinforced composite wear-resistant lining board is formed by compounding a framework reinforced body containing hard phases and base body metal. The preparation method comprises the following steps: adopting a framework precast body made of tube wires filled with hard materials, performing the vacuum high-temperature sintering, forming the framework reinforced body containing hard phases, and leading the framework reinforced body to perform the metal casting composite molding with the base body metal, so as to form the lining board formed by compounding the framework reinforced body containing hard phases and the base body metal. The framework reinforced body is performed by the vacuum high-temperature sintering to form a complete metallurgical texture structure, which has order arrangement, uniform distribution, stable performance and strong integrity, can always keep complete framework structure after compounding with the base body metal, thereby developing the high wear-resistance of the hard phases in the framework reinforced body, and keeping better flexibility of the base body metal. The reinforced composite wear-resistant lining board can be compounded locally or gradiently, or integrally, and can be widely applied to wear-resistant fields of mine, electricity, metallurgy, coal, building materials, and the like.
Owner:XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY

Transformer cabinet based on self-feedback uniform heat dissipation

The invention discloses a transformer cabinet based on self-feedback uniform heat dissipation. The invention belongs to the field of transformer equipment, a special composite heat dissipation sheet can be additionally arranged on a surface of an existing transformer oil tank, matched lifting heat-absorbing balloons are introduced while the heat dissipation of the oil tank is greatly improved, a self-feedback heat dissipation mechanism arranged on the composite heat dissipation sheet is used for sensing the heat distribution condition on the transformer oil tank; phase expansion is carried outaccording to heat distribution; more lifting heat-absorbing balloons are attracted through the magnetic attraction effect to be in contact for heat transfer; the transfer of heat to the lifting heat-absorbing balloons is accelerated; after absorbing enough heat, the lifting heat-absorbing balloons automatically rise to a cup-shaped outer heat dissipation shell to transfer the heat to the outside;the lifting heat-absorbing balloons serve as intermediate media to play a role in temporary heat storage, a heat conduction bridge between the transformer oil tank and the outside is built, the uniform and efficient heat dissipation and cooling of the transformer oil tank are achieved, and, therefore, the working stability and safety of a transformer are improved.
Owner:济宁鲁星电气科技有限公司

Remediation method for hexavalent chromium polluted soil and underground water

The invention discloses a remediation method for hexavalent chromium polluted soil and underground water. The remediation method comprises the following steps: step (10): putting a pile machine in place; step (20): independently injecting acidified bentonite slurry loaded with active carbon powder and bentonite slurry loaded with zero-valent iron powder into the ground by using stirring and injection equipment and stirring; step (30): detecting the reduction effect of hexavalent chromium in the soil and the underground water; step (40): injecting bentonite and industrial waste alkali mixed slurry; and step (50): detecting the remediation effect of hexavalent chromium and trivalent chromium. By virtue of the remediation method, remediation chemicals can be in direct and sufficient contact with the soil and the underground water to react, so that the hexavalent chromium in the soil and the underground water can be completely reduced; meanwhile, an indissolvable stable compound is formed by the trivalent chromium and the useless loss of the remediation chemicals can be reduced; the potential of hydrogen of a stratum is balanced; and the remediation method is suitable for the large-area hexavalent chromium polluted stratums different in potential of hydrogen and moisture content.
Owner:SOUTHEAST UNIV

Prestressed mud jacking trolley and circulating mud jacking method

The invention provides a prestressed mud jacking trolley and a circulating mud jacking method. The prestressed mud jacking trolley comprises a mortar pump, a high-speed pulping machine, a low-speed pulp storage barrel, a water-binder ratio test instrument, a pressure sensor, an electromagnetic flow-meter, a pulp inlet-overflow valve, a pulp return valve, a pressure regulating valve and a computer, wherein the low-speed pulp storage barrel is connected with the water-binder ratio test instrument, and is connected with the mortar pump through a pulp suction pipe; the mortar pump is connected with a prestressed pipeline of a constructed object through a pulp inlet pipe; the prestressed pipeline is connected with the low-speed pulp storage barrel through a pulp return pipe; the pressure sensor, the electromagnetic flow-meter, the pulp inlet-overflow valve, the pulp return valve and the pressure regulating valve are arranged on the pulp inlet pipe and the pulp return pipe; and the computer receives measurement data and controls the power-on and power-off of the pulp inlet-overflow valve, the pulp return valve and the pressure regulating valve through signals. The prestressed mud jacking trolley and the circulating mud jacking method have the advantages as follows: the prestressed mud jacking trolley achieves high integration and is convenient to use; the mud jacking pressure and the pulp performance can be controlled accurately; the pulp amount can be metered accurately; and the technical problem that the mud jacking in the prestressed pipeline is not full and not compact can be solved by exhausting air in the pipeline in a circulating manner.
Owner:HUNAN LIANZHI BRIDGE & TUNNEL TECH

Oxidation resistant dimethyl silicon oil based magnetic fluid and preparation method thereof

The invention provides oxidation resistant dimethyl silicon oil based magnetic fluid and a preparation method thereof; the dimethyl silicon oil based magnetic fluid is prepared by nano-magnetic particles, a surface modifier and carrier fluid, and the carrier fluid is the dimethyl silicon oil. The preparation method of the dimethyl silicon oil based magnetic fluid comprises the following steps: preparing the nano-magnetic particles; treating the nano-magnetic particles in an activated way; preparing the nano-magnetic particles which are modified by the surface modifier; adding the modified nano-magnetic particles which are purified into methylene dichloride, dispersing and filtering the mixture to obtain the methylene dichloride based magnetic fluid; adding the magnetic fluid into the dimethyl silicon oil to be stirred and dispersed, heating the mixture and maintaining the temperature between 50 and 90 DEG C, separating and precipitating the mixture to obtain the dimethyl silicon oil based magnetic fluid. The dimethyl silicon oil based magnetic fluid in the invention has the advantages of high stability, low temperature resistance and high temperature resistance. The preparation method is simple, high in efficiency and low in requirement on equipments, thus being easy to be applied in various fields and having wide application prospect.
Owner:SUN YAT SEN UNIV

Smelting method of non-quenched and tempered steel

The invention discloses a smelting method of non-quenched and tempered steel. The smelting method comprises the working procedures of converter smelting, LF refining, VD vacuum treatment and continuous casting, and comprises the specific technological steps that (1) nitrogen is blown at the bottom in the whole converter smelting process, and converter high-carbon drawing and tapping is carried out; (2) diffusion deoxidation is carried out in the LF refining process, good deoxidation and desulfurization effects are guaranteed, and the N content of molten steel after LF finishing is 75-90ppm; (3) VD vacuum treatment is carried out, wherein the content of N in the molten steel after hollow breaking is 50-60 ppm, after hollow breaking, soft blowing time is larger than or equal to 30 min, and argon flow is smaller than or equal to 25 L/min; and (4) continuous casting adopts crystallizer stirring and tail-end stirring, medium-high carbon tundish covering agent and medium-carbon crystallizercovering slag are used, and continuous casting billets are cooled slowly in an off-line mode. According to the smelting method of the non-quenched and tempered steel, the nitrogen content yield is stable, the performance of the non-quenched and tempered steel is good, calcium cyanamide (CaCN2) is not adopted, environmental pollution is small, the feeding amount of the manganese nitride wire is small, and the production cost is low.
Owner:石钢京诚装备技术有限公司

Glue extrusion device for fiber gluing equipment of winding machine

The invention discloses a glue extrusion device for fiber gluing equipment of a winding machine, comprising a servo motor, a box body, an upper glue extrusion roller, a lower glue extrusion roller, a damping spring, a glue receiving box and a temperature control system, wherein the servo motor is installed on the box body, two ends of the upper glue extrusion roller and the lower glue extrusion roller are respectively fixed at two sides of the box body and can move freely, the damping spring is fixed between the lower glue extrusion roller and the bottom of the box body, the glue receiving box is arranged below the lower glue extrusion roller, a heating rod and a temperature sensor are arranged in the lower glue extrusion roller, the temperature control system forms a temperature control circuit with the heating rod and the temperature sensor, fiber passes through the place between the upper glue extrusion roller and the lower glue extrusion roller to be subjected to the extrusion of two rollers, and redundant glue solution on the fiber is extruded out and then flows onto the glue receiving box along the two rollers. The device can continuously adjust and control the gluing amount on fiber to control the temperature of the fiber and keep the flowability of the glue solution, the roller type extrusion ensure the glue solution to be more completely macerated on the fiber, the device has stronger adaptability to the fiber, and the fiber is not easy to fracture.
Owner:BEIHANG UNIV
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