1529results about How to "Improve recovery rate" patented technology

A method for repairing process-related damage of a dielectric film formed on a substrate caused by processing the dielectric film includes: irradiating the damaged dielectric film with UV light in an atmosphere of hydrocarbon-containing gas to restore the surface of the dielectric film; and irradiating the surface-restored dielectric film with UV light in an atmosphere of oxygen gas to partially remove the hydrocarbon film.

It is intended to provide a drug for improving prognosis for subarachnoid hemorrhage which contains, as the active ingredient, at least one member selected from the group consisting of eicosapentaenoic acid (EPA) and pharmaceutically acceptable salts and esters thereof, and a method of improving prognosis for subarachnoid hemorrhage which comprises orally or gastrically administering the above drug.

The invention discloses a high-sublevel subdivision mining method of a moderately thick heavy-pitch waste-rock-containing interlayer phosphate orebody along a strike. The high-sublevel subdivision mining method comprises four steps of exploiting, mining preparation, cutting and recovery, wherein a footwall intermediate-section main roadway is respectively arranged on a high sublevel along a top plate and a bottom plate of the orebody, and the intermediate-section main roadways of the top plate and the bottom plate are connected through a communication channel at intervals of 100m, therefore reduced roadway cutting construction, small development rate and simple process are achieved; after overall blasting of a stope is finished, a large amount of concentrated ore drawing is carried out, and the production efficiency is high; tail sand is adhered and filled after space pillars are mined first, then rooms are evacuated, and the rooms are filled with waste rocks or tail sand in a non-adhering way, thus recovery rate is high; and the high-sublevel subdivision mining method has little damage to the environment and capabilities of changing oredressing tail sand and waste rocks generated in open-air production into valuables and reducing geological disaster from happening. Due to the adoption of the high-sublevel subdivision mining method disclosed by the invention, ore recovery rate can be increased, ore dilution rate and emission of mine wastes are reduced, capacity of slag disposal pit is relatively increased, expropriation of land is decreased, and mineral land harmony is promoted.

The invention relates to the coal mine safety technology and discloses a gob natural fire control method which has good effect of fire preventing and extinguishing. The gob natural fire control method comprises the following steps: pouring nitrogen, wherein a nitrogen pouring point is 30 to 60 meters from a working face, and the amount of the liquid nitrogen is 2000m3/h; reducing the air leaking volume of a gob, and reducing the pressure difference of the working face, and controlling the pressure difference of the working face within 120Pa; blocking the leakage within an area in which the tight caving cannot be achieved due to the cantilever beams formed at an air inlet side and an air return side of the gob through a top plates, and timely closing a transverse rail at the gob; accelerating the advance velocity of the working face, wherein the working face is at the speed of 4m/d; increasing the recovery ratio; and controlling the thickness of the residual coal to be below 1.3 meters. According to the gob natural fire control method, a comprehensive working face gob comprehensive fire preventing and extinguishing measure based on 'nitrogen pouring first, leakage blocking, wind resisting, accelerating of advance velocity and recovery rate increasing second' is proposed, and measure implementing parameters are provided; with the adoption of the method, the effect of preventing and extinguishing the fire of the gob can be improved; and the mining on the working face can be ensured to be smoothly carried out.

The invention discloses an inclined separated layer solid filling coal mining method for a super thick coal seam, which is suitable for the exploitation of an 'under three' super thick coal seam. The method comprises the following steps: determining the number of inclined separated layers according to the principle that thickness of each separated layer is 2.5-4.5 m; adopting a exploitation sequence that mining layer by layer, and filling at a next row; arranging tunnels and equipment according to the conventional solid filling coal mining method; carrying out a circulating sequence that coal mining firstly, metal nets and bamboo fences paving secondly, and filling finally to complete the filling exploitation of a first mining surface and a first separated layer; meanwhile, mining according to the same filling coal mining method under the shield of a manual false roof formed by the first separated layer at the corresponding position of a second separated layer 4 months after a working face of the first separated layer finishes mining; circulating in the way that the exploitation of one separated layer is performed under the shield of a manual false roof manufactured by an upper separated layer continuously until the whole super thick coal seam is mined out. Through the adoption of the method, resources of the 'under three' super thick coal seam can be utilized, the rock formation movement and earth surface sinking can be effectively controlled; and the recovery ratio is high, the production efficiency is high, the cost is low, and the method has wide practicability in the field of thick coal seam filling exploitation.

The invention provides a method for fully mechanized continuously-filling coal mining of steeply pitching coal seams, which comprises the following steps: a stoping face is arranged as per the method of long-wall mining along the strike, and fully mechanized mining equipment for the steeply pitching coal seam is adopted; an air cushion and a working face filling pipeline are arranged on a base on the side of a mined out space of rear pillars of a fully mechanized mining support; whenever the working face advances for every 1.4 to 1.8 meters and after the support is moved, the working face filling pipeline is connected with an upper gateway filling main pipeline; the air cushion is filled with air, and auxiliary separation is arranged; paste is conveyed to a filling pipe branch sequentially from low to high so as to ensure filling and compacting, and finally the paste is conveyed to a supplementary filling pipe of the upper gateway; after the paste is coagulated, a portion of air in the air cushion is released, and the working face advances forward continuously; the steps are repeated until the stopping work for the whole working face and the filling work for the mined out space are finished. The method provided by the invention is convenient to operate and simple to carry out, can improve the mechanization level for mining the steeply pitching coal seams under buildings, railways and water bodies, improves the output of the working face, efficiently reduces the roof subsidence and the ground deformation, and realizes coal mining without the pillars and achieves Y type ventilation.

The invention provides a mechanized mining method for a gently-inclined medium-thick ore body, and belongs to the technical field of mining. The method comprises the following steps: dividing a gently-inclined medium-thick ore body into a panel area, dividing the ore body in the panel area into strips in a heading direction, driving a pseudo-inclined mining uphill roadway and a return air uphill roadway in the inclining direction of the ore body, driving a stope connecting roadway in a mining uphill direction and a return air uphill direction respectively, reserving a top safety ore pillar anda bottom safety ore pillar at the top and the bottom of each section respectively, and reserving a safety ore pillar between adjacent stopes in the heading direction of the ore body. The strips in the panel area is divided into one-step stopes and two-step stopes, the ore body is stoped at intervals sequentially from bottom to top, the one-step stopes are mined first, and then the two-step stopesare mined. After filling and final setting of all one-step and two-step stopes, uphill safety ore pillars, top safety ore pillars and bottom safety ore pillars are recovered. The method provided by the invention has the advantages of high mechanization degree, large production capacity, small mining and cutting work amount, high ore recovery rate, low lean loss rate and good safety.

The invention discloses an ecological breeding method for efficient polyculture of river crabs, freshwater shrimps and pseudorasbora parva. The method comprises preparing conditions of a pond, constructing escape-preventing facilities, airing and sterilizing the bottom of the pond, applying fertilizer to the pond, planting water plants, putting in snails, putting in fingerlings, regulating and controlling water quality, throwing in feed and the like. According to the ecological breeding method, the situation that siniperca chuatsi feed on freshwater shrimps in the breeding mode of shrimps, crabs and siniperca chuatsi in the past is avoided, so that the output of the freshwater shrimps is increased greatly, and the recapture rate of the freshwater shrimps is high; the pseudorasbora parva play a role as a scavenger by feeding on residual feed, so that water quality pollution is reduced greatly, water quality is improved, and the growth of river crabs, freshwater shrimps and pseudorasbora parva is boosted. According to the ecological breeding method, the output and quality of river crabs, freshwater shrimps and pseudorasbora parva are improved remarkably, death rate is lowered, feed waste is reduced, breeding cost is lowered, breeding benefit is improved, income of fishermen is increased, and efficiency improvement of the fishery industry is realized.

The invention provides a method for mining coal of a steeply inclined thin seam on the basis of learning from a long-hole blasting coal mining method and a wire saw coal mining method, which is a long-hole blasting and wire saw coal mining method and relates to underground coal mining. The method comprises the following steps: long boreholes are arranged in a direction which is parallel to the cross pitch of the coal seam for coal blasting; after finishing blasting a work surface, making the coal slip out from a section coal bin and loading the coal for outward transport through a haulage drift; and when blasting to the vicinity of a tailgate through the long boreholes, stopping the blasting and utilizing a wire saw to mine remaining coal. The method has the advantages of no work surface support, rational tunnel arrangement, simple ventilation management, the capacity of realizing unmanned work surface mining, low cost, strong security, high coal mining rate, low worker labor intensity, good social and economic benefits and the like.

The invention discloses cuprous modified metal organic skeleton absorbent, a preparation method and application, belonging to the technical field of fuel oil processing. The absorbent can effectively adsorb sulfide in gasoline. The cuprous modified metal organic skeleton absorbent adopts a metal organic skeleton as a carrier, a cupric precursor is reduced by adopting a reducing agent through a vapor induction reduction method to prepare the metal organic skeleton adsorbent which is loaded with monovalent copper, and the cuprous content is 0.1 to 1mmol/g.

The invention relates to a method for re-mining residual floor coal in a fully-mechanized top coal caving face. The method is used for re-mining residual floor coal with complete coal seam at the bottom and fragmentized coal bodies at the upper part and having accumulated water, CO, CO2, gas and other harmful gases in the fragmentized coal bodies and an upper goaf; the method comprises the steps of proving reserves, accumulated water amount and accumulated gas amount, draining, filling nitrogen gas and fire retardants, tunneling an upper gateway and a lower gateway of a re-mining working face in a width equivalent to a distance away width of one-two roadways from re-mining residual floor coal bottom plate, reasonably setting zone protective coal pillars, cutting holes, reinforcing a top plate and controlling the coal seam, and then performing re-mining the residual floor coal in the fully-mechanized top coal caving face, wherein the ratio of the thickness of the cut coal and the sum of the thicknesses of the controlled coal seam and the fragmentized coal body at the upper part is controlled to be 1:3. The method for re-mining the residual floor coal liberates dead reserves, fully excavates and unleashes resources potential, improves the economic benefit, relieves the enterprise pressure and prolongs the life of mines.

The invention discloses a gob-side entry retaining method for an anchor bolt network gangue bag wall body for coal mining without pillars. The gob-side entry retaining method comprises the following steps of: A, crushing solid wastes obtained by separating tunneling gangue and/or coal gangue until the granularity is small than 0.1m and bagging by adopting plastic woven bags to obtain gangue bags; B, conveying the gangue bags obtained in the step A to the position of a working surface, which is used for building an entry, through an underground conveying system and fixing the gangue bags for building a roadside gangue bag wall body to form a gob-side entry; C, arranging the gangue bag wall body into a plurality of steps with different heights; and D, building the gangue bag wall body to the designed position and height and then mounting anchor bolts and paving a metal net, and simultaneously, paving a vertical protection steel belt, carrying out two-way anchoring or single-side pretightening in a large-pallet lane and keeping a gangue bag filling body in the gangue bag wall body in a three-dimensional stress state to achieve the functions of increasing the side pressure of the gangue bag filling body and improving the strength and the rigidity of the filling body.

The invention relates to a method of solid filling coal mining and building gangue walls along the goaf, which is to build a gangue wall on the side of the filling body in the goaf of the coal mining face, and pack the coal mine gangue into the gangue wall with woven bags or snakeskin bags. If it is full and built into a wall, the coal mine gangue can be directly filled with the gangue filling the coal mining face. Then, the gangue wall needs to be pre-prepared with single-layer metal mesh, "W"-shaped steel belt, ladder beam and double-ended threaded anchor rod. Tight support. As the working face continues to advance, this method can leave a complete gangue wall for the mining of the next working face. The roadway retaining method is simple and practical, has high support strength and low cost.

The invention provides an end slope coal bed remote control excavating mining method, which belongs to an end slope residue coal resource extraction method and is used for open pit coal mine end slope and hillside outcrop and shallow surface coal bed mining. A coal mining system adopts a remote control excavating machine system, which comprises an excavating machine and a remote operating and control room, wherein operating and control equipment consists of three parts including a mining flameproof excavating machine electric control box, an excavating machine electric control box and an operating table; the operation function of long-distance wired control is realized; the man-machine separation is realized; and during the coal mining, people operate in a safe operation room. The main mining flow process comprises the steps of cleaning preparation, initial stage mining roadway pit selection, excavating and coal cutting by the excavating machine, coal loading by the excavating machine, belt extending, outward coal conveying by a belt, pile pouring by a loading machine, laneway exiting after coal excavating to a preset position, equipment withdrawing, overhauling, and preparation again for next roadway pit extraction. The end slope coal bed remote control excavating mining method has the characteristics that the coal resource extraction rate improved; the production process is simple, safe and efficient; and the production cost is low, and the like. The safe and efficient mining of open pit coal mine end slope remained coal resources is favorably realized.

The invention discloses a method for mechanically mining coal by using a steep seam pseudo inclination bracing type retractable flexible shield support. By the method, a steep seam coal mining machine and a bracing type retractable flexible shield support are provided. The method comprises the following steps of: 1, mining, namely mining by arranging the coal mining machine on a pseudo inclination working surface; 2, loading and transporting the coal, namely raking a falling coal body to a conveying mechanism and conveying the falling coal body to the rear part of the coal mining machine by using left and right gathering arms of the coal mining machine, sliding the falling coal body to a coal sliding hole truck loading point through a sliding chute, loading and transporting; 3, supporting an operating area, namely arranging the bracing type retractable flexible shield support in the operating area; 4, ventilating the working surface; 5, atomizing for dust removal; 6, exploiting upper triangle coal; and 7, recycling lower triangle coal, namely dredging a finishing cut, lowering the shield support to a horizontal position gradually, disassembling and decomposing the coal mining machine, transporting to the next stoping working surface and completely recycling the shield support when the working surface is propelled to a place neara district rise hole. By the method, the problems of low recovery ratio, low mechanization degree, low single yield of the working surface, severe working environment, high probability of malignant accidents and the like in domestic and oversea steep seams can be radically solved.

The invention discloses a wireless real-time community medical care monitoring system with a security mechanism and a wireless real-time community medical care monitoring method. The wireless real-time community medical care monitoring system mainly comprises a wireless sensor network and a monitoring computer, wherein the wireless sensor network comprises a terminal node, a route node and a base station node; and the base station node is connected with the monitoring computer by a serial port or network port. The invention has three network formation methods according to different demands. The invention better solves the problem that the elderly and the chronic patient can transmit human physiology parameters to a medical monitoring center in real time; meanwhile, the strengthened security function overcomes the detect that the prior wireless sensor network medical monitoring system can not effectively protect the data, the invention protects the important physiology data during the transmission by adopting an efficient elliptical curve cryptographic algorithm and improves the system safety.

The invention discloses a mesenchymal stem cell frozen stock solution which does not contain animal proteins and DMSO (dimethyl sulfoxide). The frozen stock solution comprises trehaloses, a carbohydrate and electrolyte injection, ATP (adenosine triphosphate) and human serum albumins. The frozen stock solution has the advantages of high recovery rate (90%), no influence on characteristics of stem cells, unchanged cell proliferation, unchanged cell differentiation, easy use, good stability and the like. The invention also discloses a preparation method of the frozen stock solution.

The medicine for treating coronary heart disease and cerebral thrombus is prepared with motherwort, gingko leaf, astragalus root ginseng, red sage and other over 20 kinds of Chinese medicinal materials in certain weight proportion. It is prepared into medicine powder, capsule, bolus or tablet. It has functions of reducing blood fat, lowering blood viscosity, reducing cholesterol and promoting blood circulation to disperse blood clots, and possesses high curative rate.

The invention discloses a data encryption and decryption method based on multiple digital envelope certificates, which comprises the following steps: in the process of applying for a soft certificate,locally generating a key pair of a user mobile terminal, and sending a public key to a CA server for signing to generate a digital certificate; compared with a manner that a key pair is generated bymeans of a CA server and then is transmitted to a user through a network, the private key does not need to be transmitted through a network; the security of the user private key is ensured; a plurality of certificates of one user are adopted; the certificate is managed in a certificate management server; certificate management server, all digital certificates are stored in a user account in a centralized manner; the certificate management server is simple in structure, convenient to manage, high in efficiency and capable of obtaining all digital certificates of a user at a time according to the account number of the user due to the fact that multiple CAs need to be inquired from the CA for multiple times in the prior art, operation is complex and efficiency is not high due to the fact thatmultiple CAs possibly exist at the same time, and system communication and processing burden is reduced.