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227results about How to "Breach of integrity" patented technology

Pomegranate-like structured composite material preparation method

The invention discloses a pomegranate-like structured composite material preparation method which comprises the following steps: S1, taking a polyacrylonitrile solution, adding silica nanoparticles, and fully dispersing; S2, adding deionized water after stirring for emulsification to obtain a mud like precursor; S3, heating the mud like precursor obtained in the S2, and annealing to obtain a solid composite; and S4, grinding the solid composite obtained in the S3 into micron particles, adding a hydrogen fluoride solution for corrosion for a certain period of time, washing hydrogen fluoride, and drying to obtain a pomegranate-like structured composite material. According to the method, polyacrylonitrile is used for coating the silica particle surface, the polyacrylonitrile is emulsified when meeting water, so that the coated silicon particles are agglomerated, the coated silicon particles are carbonized and ground for formation of the pomegranate shaped structured silicon carbon composite material, HF is used for direct corrosion of the silicon nanoparticles in the material for preparation of the hollow pomegranate-like structured composite material, and detailed structure characterization and electrochemical performance testing of the material show that the material is good in performances.
Owner:SUN YAT SEN UNIV

Environment-friendly high-strength water-resisting and mildew-resisting adhesive for plywood and preparation method of environment-friendly high-strength water-resisting and mildew-resisting adhesive

The invention discloses an environment-friendly high-strength water-resisting and mildew-resisting adhesive for a plywood and a preparation method of the environment-friendly high-strength water-resisting and mildew-resisting adhesive. The environment-friendly high-strength water-resisting and mildew-resisting adhesive is prepared from the following raw materials including polyvinyl alcohol, cassava starch, dibutyl phthalate, sodium pyrosulfite, tannic acid, jade powder, calcium silicate hydrate, asbestos powder, p-hydroxybenzoic acid hydrazide, diammonium hydrogen phosphate, hydroquinone, sodium diethylhexyl sulfosuccinate, triethyltin chloride, phenyl mercury oleate, borax and the like. The polyvinyl alcohol and the cassava starch are subjected to a cross-linking reaction so that crystallization degrees of the polyvinyl alcohol and the cassava starch are reduced and a new cross-linking structure is formed, and furthermore, the thermal stability of the adhesive is improved; the borax is added and the polyvinyl alcohol and the starch can be subjected to further cross linking, so that the cross-linking degree and the initial viscosity of the adhesive are improved, and furthermore, the water resistance and the bonding force of the adhesive can be improved; the triethyltin chloride, the phenyl mercury oleate, the p-hydroxybenzoic acid hydrazide and the like are added so that the mildew-resisting capability of the plywood can be improved.
Owner:倪协照

Defective pixel detecting and correcting method based on minimal mid-value gradient filtering

The invention discloses a defective pixel detecting and correcting method based on minimal mid-value gradient filtering. The method comprises the steps that a 5*5 Bayer array uses a pixel to be detected as the center, a center pixel is used as the datum, three gradient absolute values are calculated in the horizontal direction, the vertical direction, the diagonal direction and the clinodiagonal direction, the mid-value of the gradient absolute values in each direction is gained, and then the minimum value of the four mid-values is obtained to be used as the edge direction, namely the defective pixel checkout direction; in the minimum mid-value gradient direction, a defective pixel can be obtained when the requirement that the middle gradient absolute value is larger than the value which is integer multiples of the sum of the other two gradient absolute values in the same direction is met, the pixel value in the direction is used for verification, and otherwise, the pixel is a normal pixel and is output directly; for certain special range pixels, a more strict judgment condition is used for reducing missing inspection at edge pixels; for the diagonal position or the back-diagonal position, a more loose judgment condition is used for reducing missing inspection at the edge position when the gradient meets certain conditions. By means of the defective pixel detecting and correcting method based on minimal mid-value gradient filtering, the defective pixel can be filtered out quickly, the false detection rate and the missing detection rate are low, and image borders can be completely reserved.
Owner:XIDIAN UNIV

Underground gas storage safe operation monitoring system and monitoring method

The invention provides an underground gas storage safe operation monitoring system and monitoring method. The underground gas storage safe operation monitoring system comprises armored optical cables,quasi-distributed optical fiber pressure sensors and underground three-component detector arrays, wherein the armored optical cables and the quasi-distributed optical fiber pressure sensors are distributed inside and outside all gas injection wells, gas production wells and monitoring well sleeves and outside in-well gas injection and production pipes, and the underground three-component detectorarrays are partially distributed in a monitoring well. The measurement armored optical cables, the quasi-distributed optical fiber pressure sensors and a composite modulation and demodulation instrument placed near a wellhead are fixed to the outer side of the metal sleeve. According to the underground gas storage safe operation monitoring system, real-time on-line monitoring of changes of noise,temperature, pressure, stress / strain and distribution characteristics of microseism events in all wells is comprehensively and fully utilized, intelligent comprehensive analysis and evaluation are carried out on all parameters and information monitored in real time on line, grading classification is carried out on various risks or accidents influencing safe and stable operation of the gas storage, early warning signals and information of accident risks are issued in time, and long-term stable and safe operation of the gas storage is ensured.
Owner:BGP OF CHINA NAT GASOLINEEUM CORP +1

Hard roof orientation acidification fracturing roof control pressure relief method

The invention discloses a hard roof orientation acidification fracturing roof control pressure relief method which includes the steps: determining a fracturing target layer, particularly determining afracturing hard difficult caving roof layer position, and acquiring the reasonable fracturing target layer according to the hard difficult caving roof layer position and natures of rock layers; arranging an acidification fracturing roadway; arranging a fracturing hole, a guide hole and a wedge-shaped groove; connecting acidification fracturing systems, and performing acidification fracturing. According to the method, acidification fracturing of a hard roof is controlled, the strength of a rock is weakened, mechanical properties of the rock are reduced, the integrity of the hard roof is destroyed, local stress concentration is effectively removed, and goaf roofs can be timely collapsed in a layered and batched manner. The method avoids a series of mine dynamic disasters which include thatstrong mine pressure of a high stress area of a coal column and strong mine pressure along a caving roadway are appeared as large-area hard roofs of working areas cannot be timely collapsed. The method is obvious in effect and has wide practicability.
Owner:中铁十九局集团矿业投资有限公司

Arrangement method for precracking roof for roof-cutting roadway

InactiveCN102797492AAvoiding Mineral Burst DisastersBreach of integrityDust removalFire preventionGas explosionRock burst
The invention relates to an arrangement method for a precracking roof for a roof-cutting roadway, and is particularly suitable for precracking the roof of a working face with a thick and hard roof, so as to prevent the roof from forming a large area of hanging arch at the back of the working face and further prevent coal from generating high stress to collectively cause an rock burst disaster. A roadway is tunneled where roof precracking is needed; a crossheading on the side where a goaf is positioned of the working face is communicated with a gas high collection tunnel, and the tunneled roadway is called the roof-cutting roadway; and a hole as large as the roadway is formed in the thick and hard roof of the roof-cutting roadway, so that the intensity of the roof is weakened. When the working face advances to the area of the roof-cutting roadway, the roof is broken along the precracking weakened area of the roof-cutting roadway so as to prevent the thick and hard roof from forming a large area of hanging arch at the back of the working face and further prevent the hanging arch from causing coal in front of the working face to generate high stress and collectively cause an rock burst disaster. In addition, explosion is not required when the roof is precracked with the method, so as to avoid a gas explosion disaster of a well caused by sparks of the explosion. The method has the advantages of simplicity, safety, practicality and good roof-cutting effect.
Owner:CHINA UNIV OF MINING & TECH

Gas-containing coal permeation-increasing method adopting joint action of carbon dioxide detonation and acidification

The invention discloses a gas-containing coal permeation-increasing method adopting joint action of carbon dioxide detonation and acidification. According to working face parameters, the coal seam thickness, the gas content and the like, the drilling hole arranging mode of a permeation-increasing unit is comprehensively confirmed, and a plurality of permeation-increasing units are arranged on a working face; and drilling holes in the permeation-increasing unit are adopted with the following measures that firstly, carbon dioxide detonation is conducted through a detonation hole, then acid liquid is injected through an acidification hole, the setting time is maintained, and finally, the detonation hole and the acidification hole are connected into an extraction system to conduct gas extraction. According to the permeation-increasing method of the coals containing the gas through the joint action of detonation and acidification of the carbon dioxide, while coal seam breathability is increased, the content of the carbon dioxide is greatly improved through early carbon dioxide detonation and later-period acidification, and additionally, the adsorption capacity of the coals on the carbon dioxide is further larger than that of methane, so that the replacement and displacement effects on the methane are achieved. According to the gas-containing coal permeation-increasing method adopting the joint action of carbon dioxide detonation and acidification, through sufficient combination of the advantages of carbon dioxide detonation and acidification, coal seam breathability is greatly improved, and the gas extraction rate is improved.
Owner:SHANDONG UNIV OF SCI & TECH

Functional composition containing plant bacterium-inhibiting polypeptide as well as preparation method and application thereof

The invention discloses a functional composition containing plant bacterium-inhibiting polypeptide as well as a preparation method and application thereof. The composition is prepared from the following components: a bacillus fermentation product, leuconostoc/radish root fermentation product filtrate, octyl hydroxamic acid and 1,2-hexanediol. Antibacterial peptide and polyol are matched accordingto different antibacterial spectrums to be used as bacterium-inhibiting components, and replace or partially replace a traditional chemically-synthesized preservative; a preservative-free system of anaddition-free preservative-free concept can be completely supported; the functional composition has moderate properties, no irritation and no toxic and side effects, and lower allergy; the functionalcomposition helps to keep ecological health and balance of skin, so that the safety of a biological preparation is improved. The bacterium-inhibiting components have good compatibility with most materials, the bacterium-inhibiting capability is not influenced by other materials and the stability of a preparation is not influenced; meanwhile, the functional composition has better experience in theaspects of moistening feeling, comfort degree and skin brightness.
Owner:SHENZHEN GENE BIOLOGICAL TECH

Non-contact temperature measurement device for induction cooker

InactiveCN102121849ABreach of integrityMeasure the average temperature in real timeRadiation pyrometryTime lagMeasurement device
The invention discloses a non-contact temperature measurement device for an induction cooker. A thermal imager supporting panel capable of moving up and down along a bracket is arranged in the bracket. An infrared thermal imager is arranged in the center of the thermal imager supporting panel. Two guide rails are fixed on the two sides of the upper part of the bracket respectively, and the extended ends of the two guide rails are supported by angle iron respectively. An induction cooker supporting panel is arranged on the two guide rails, and can slide in an X direction along the guide rails. A cookware supporting panel is fixed on the bracket, and is positioned above the induction cooker, and the center of the cookware supporting panel is provided with a through hole. Cookware is arranged in the through hole of the cookware supporting panel. The center of the bottom surface of the cookware is collinear with the center of a lens of the infrared thermal imager. The infrared thermal imager is connected with a computer. The non-contact temperature measurement device for the induction cooker is not required to damage the integrity of the induction cooker, can measure the average temperature of the bottom of the whole cookware in real time to more intuitively reflect the temperature condition of the cookware compared with conventional contact point temperature measurement, avoids temperature measurement time lag caused by a ceramic panel and improves the temperature measurement accuracy.
Owner:CHINA JILIANG UNIV

Controlled-release recombinant human bone morphogenic protein-2 poly-L-lactic acid microspheres and preparation method thereof

The invention discloses controlled-release recombinant human bone morphogenic protein-2 poly-L-lactic acid microspheres and a preparation method thereof, which relate to a medicament carrier and preparation thereof. The component of a microsphere substrate is poly-L-lactic acid (PLLA); the wrapped medicament is recombinant human bone morphogenic protein-2 (rhBMP-2); and the released rhBMP-2 active protein is integral in structure and exists in a form of a homologous dipolymer. The preparation method comprises the following steps: mixing rhBMP-2 organic solution and PLLA organic solution to obtain mixed solution; precipitating microsphere crystals from the mixed solution after the mixed solution passes through a supercritical fluid CO2 solvent extraction; and after obtaining the microspheres, stopping pumping the mixed solution, keeping a pressure and a temperature in a high pressure autoclave unchanged, and continuously introducing CO2 to elute the microsphere crystals to remove residual organic solution. The method of the invention is simple in process, short in period, easy in organic solution removal, high in biological safety, short in burst releasing period and long in obtained microsphere particle controlled-release period, and easier in the storage of the physiological activity of the rhBMP-2.
Owner:SICHUAN UNIV

Method for drying gastrodia elata at variable temperatures

The invention discloses a method for drying gastrodia elata at variable temperatures, and belongs to the technical field of primarily processing medicinal plants. By the aid of the method, the drying time can be shortened, and the gastrodin contents can be increased. The method includes steps of steaming the fresh gastrodia elata; cooling the steamed gastrodia elata at the room temperatures; preliminarily freezing the gastrodia elata; carrying out vacuum freeze-drying on the gastrodia elata to obtain dried gastrodia elata. Compared with the traditional process for carrying out vacuum freeze-drying on gastrodia elata, the method has the advantages that the fresh gastrodia elata is steamed and cooked before being preliminarily frozen, accordingly, transformation and synthesis of gastrodin can be accelerated by the aid of the method, and the gastrodin contents of the dried gastrodia elata can be 1.75 times the gastrodin contents of directly frozen and dried gastrodia elata; the integrity of gastrodia elata cells is destroyed in steaming procedures, free water and partial combined water are easy to diffuse to the outsides of the cells and tissue spaces, accordingly, the duration for drying the gastrodia elata by the aid of the method can be saved by 5 hours at least as compared with a process for directly carrying out vacuum freeze-drying on fresh gastrodia elata, and energy sources can be saved; the original appearance of the fresh gastrodia elata dried by the aid of the method can be kept, the gastrodia elata is good in rehydration capacity, easy to smash and long in shelf life, and the method is high in operability and easy to popularize.
Owner:KUNMING UNIV OF SCI & TECH
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