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2947results about How to "Improve repair efficiency" patented technology

Restoration agent for lowering cadmium/lead effective state content in soil, and use method and application thereof

The invention discloses a restoration agent for lowering cadmium / lead effective state content in soil, which is composed of quicklime, calcium sulfate, wood charcoal, iron chloride and water, wherein the weight ratio of the quicklime, calcium sulfate, wood charcoal and iron chloride is (1-2):(1-2):(1-2):(0.5-1), and the water accounts for 30-45 wt% of the soil. The restoration agent can be used for treating heavily polluted soil; and common chemical passivators can only restore lightly polluted soil, and do not have obvious effect on heavy pollution. The restoration agent can be used for treating both acidic soil and neutral soil. The restoration agent has high remediation efficiency for cadmium polluted soil; the reaction mechanisms relate to chemical precipitation and physical adsorption; and when one action fails due to change of the outside conditions, the other action can perform the guarantee function. The restoration agent has certain control actions on the lead effective state content in the polluted soil.
Owner:HUNAN RES INST FOR NONFERROUS METALS

Chemical leaching restoring method for soil polluted by heavy metals

The invention discloses a chemical leaching restoring method for soil polluted by heavy metals. Na2EDTA solution is utilized to perform leaching to the soil polluted by the heavy metals, available cadmium and lead in the soil are effectively removed, Na2S.9H2O is utilized to precipitate the heavy metals in filtrate, Na2EDTA is released again, and repeated recycling of the Na2EDTA solution is achieved. After recycling, the Na2EDTA solution carries out leaching to the soil polluted by the heavy metals, the removing rate of available Cd in the polluted soil reaches 81.6-81.8%, and the removing rate of available Pb reaches 55.9-60.1%. The chemical leaching restoring method for the soil polluted by the heavy metals overcomes the shortcomings that an existing method for the Na2EDTA solution to perform leaching to the soil polluted by the heavy metals causes chemical cost to be large, generated filtrate is much, and the follow-up treatment is troublesome. Simultaneously, the chemical leaching restoring method for the soil polluted by the heavy metals has the advantages of being simple in process, becoming effective quickly, enabling a leaching agent to be reused, and enabling the heavy metals to be effectively eliminated.
Owner:CENT SOUTH UNIV +1

Slow-release fertilizer with effect of soil remediation and remediation method of soil polluted by polycyclic aromatic hydrocarbons

The invention discloses slow-release fertilizer with the effect of soil remediation, which is prepared by polyhydroxyalkanoates which can be completely biodegraded, organic and inorganic nutrients and other substances, by slow-releasing the organic and inorganic nutrients, microorganism propagation and sustained and rapid growth of plants can be promoted, the bioactivity and water solubility of polycyclic aromatic hydrocarbons are quickened, and simultaneously, the defects of fertilizer loss and repeated fertilization can be avoided, thereby saving the cost and enhancing the soil remediation efficiency. The invention also discloses a soil pollution remediation method by utilizing the slow-release fertilizer, plants with the remediation effect are planted in the soil with the slow-release fertilizer, and efficient, environment-friendly and sustained remediation of the soil polluted by the polycyclic aromatic hydrocarbons (PAHs) can be realized by utilizing the microorganism-plant remediation technology.
Owner:SHENZHEN ECOMANN BIOTECH

Method for performing automatic surfacing repair on damaged metal part

The invention discloses a method for performing automatic surfacing repair on a damaged metal part, which is a technical scheme used for performing automatic surfacing repair aiming at the missing part on the damaged metal part. In the method, a measuring robot and an arc welding robot are involved, wherein the measuring robot consists of a structured light sensor and a six-freedom-degree mechanical arm; and the arc welding robot consists of a welding gun and a six-freedom-degree robotic arm. The system works according to the following steps of: first, fixing a damaged part to be repaired on a working table, and scanning the damaged part by using the measuring robot to obtain three-dimensional surface point cloud data of the damage of the part; then, performing registration (geometric alignment) on the three-dimensional surface point cloud data and an original CAD model of the metal part, and extracting the point cloud data of a damaged area by calculating the error from the point cloud data to the CAD model; and finally, generating a surfacing repair path according three-dimensional information of the damaged area, and controlling the arc welding robot to finish the automatic repair of the damaged area of the part by using a computer.
Owner:DALIAN MARITIME UNIVERSITY

Slow release fertilizer having soil remediation function and soil contamination remediation method

The invention discloses a slow release fertilizer having a soil remediation function. The slow release fertilizer is prepared by mixing fully-biodegradable polyhydroxyalkanoates and organic and inorganic nutrient substances. The fully-biodegradable polyhydroxyalkanoates is slowly degraded under the actions of soil microorganisms to provide nutrient substances needed by the growth of the soil microorganisms so as to promote the ionization effects of the soil microorganisms on heavy metals and release the organic and inorganic nutrient substances by slow degradation so as to promote durable and rapid growth of plants and improve soil remediation efficiency. The invention also discloses a soil contamination remediation method for using the slow release fertilizer. High-efficiency, environmentally-friendly and durable remediation of heavy metal-contaminated soil is realized by planting plants having hyper-accumulation capability to absorb and extract the heavy metals in the soil to which the slow release fertilizer is applied.
Owner:SHENZHEN ECOMANN BIOTECH

Method and system by using micro-nano bubbles to perform reinforcement in-situ remediation on polluted ground water

The invention belongs to the technical field of polluted ground water remediation, and particularly relates to a method and a system by using micro-namo bubbles to perform reinforcement in-situ remediation on polluted ground water. The method comprises the steps of: arranging a water injection well at the upper reaches of a region with ground water polluted by pollutants, and feeding micro-nano bubble water containing nutrient salts; leading the micro-nano bubble water to flow to the polluted region with the ground water, so as to decompose the pollutants or continuously compensate electron acceptors or electron donors for microorganisms and facilitate degradation and removal of organic pollutants; at the same time, arranging a water pumping well to pump water at lower reaches of the polluted region, so as to form a subsurface flow field; and using a monitoring well to monitor and analyze parameters in real time during the process of removing the organic pollutants, and adjusting the generating time and the aeration intensity of the micro-nano bubbles. According to the invention, the micro-nano bubbles are good in oxygen supply effect, long in lasting time and wide in influencing range, the method and the system provided by the invention can make up the shortages of common in-situ remediation technologies such as natural degradation, bioventing and the like and are low in cost and high in energy-saving efficiency, thereby being applicable in remediation for a field with a limit area and a high pollution load.
Owner:TSINGHUA UNIV +1

High temperature self-restoring epoxy resin material and preparation method thereof

The invention discloses a high-temperature self-repair-type epoxide resin material and a process for preparation, the process comprises adding microcapsule and accelerating agent which are evenly mixed into the basal body of epoxide resin, adding curing agent into the basal body of epoxide resin to evenly mix, finally, curing molding and getting high-temperature self-repair-type epoxide resin material. When cracks are produced on the high-temperature self-repair-type epoxide resin material of the invention because of forcing in the process of processing and employing, the cracks are extended to the built-in microcapsule, and the microcapsule wall is led to crack, liquid-state epoxide resin in the microcapsule is immediately released to fill into the cracks, the accelerating agent which is built in the basal body leads the liquid-state epoxide resin to be solidified under high temperature, thereby rebinding the cracks together, and the damage of the material is repaired, thereby keeping the mechanical properties of the epoxy composite material and prolonging the life span.
Owner:SUN YAT SEN UNIV

Soil washing restoration system based on reduction concentration design concept and method thereof

The invention discloses a soil washing restoration system based on a reduction concentration design concept and a method thereof. The washing restoration system comprises the following four module units which are sequentially connected with one another: a feeding and screening unit, an ore washing unit, a sludge dewatering unit and a tail-end sewage treatment recycling unit. The pollutants on the surface of coarse particles are eluted, transferred and concentrated into the filter-pressed mud cake by virtue of washing, so that pollutant-containing fine particles in contaminated soil can be effectively separated from crude particles such as gravel and grit. The repaired and discharged clean gravel and grit can be directly recycled to serve as building material. According to the system, purified water serves as a washing solution, so that secondary pollution caused by addition of a chemical washing agent is avoided, and the washing solution is treated by a tail-end sewage treatment system so as to be recycled. The reduction of remediation of contaminated soil is realized, the comprehensive repair cost is greatly reduced, the washed and discharged materials can be recycled, the contaminated soil is repaired, and a novel profit point is created.
Owner:BCEG ENVIRONMENTAL REMEDIATION CO LTD

Heavy metal resistance plant growth-promoting bacteria preparation and applying method thereof

The invention relates to heavy metal resistance plant growth-promoting bacteria and a preparation applying method thereof, which belongs to the bioremediation field of heavy metal polluted environment. A bacteria strain D54 with a preservation number of CGMCC No. 3223 belongs to the Burkholderia sp. and has higher resistance to a plurality of heavy metals, wherein the resistances to Pb <2+>, Cd <2+>, Cu <2+>, Zn <2+> respectively reach 800 mg / L, 1500 mg / L, 150 mg / L and 2500 mg / L. In addition, the bacteria strain D54 has the plant growth-promoting functions of producing plant growth hormone (IAA), producing 1-amino-1-carboxyl cyclopropane (ACC) deaminase, secreting siderophore, dissolving inorganic phosphate, fixing nitrogen and the like, has the biological prevention functions of antagonizing plant pathogenic bacteria inbreak and the like, and can obviously improve the biomass of the plants applied the invention and improve the resistance to diseases and stresses. The number of the effective viable bacteria in liquid preparation reaches 1-2 billion / ml and the number of the effective viable bacteria in solid preparation reaches 1 billion / g. Soaking seeds for 1-2 hours in the liquidpreparation which is diluted 100 times and irrigating the diluted liquid preparation 1-2 times (10ml / kg) after 2-3 weeks of the sprouting of the seeds can effectively improve plant viable bacteria infection probability.
Owner:AGRO ENVIRONMENTAL PROTECTION INST OF MIN OF AGRI

System and method for repairing organic material polluted soil

ActiveCN103008337AClear division of laborGive full play to the advantages of technologyContaminated soil reclamationAir preheaterEngineering
The invention discloses a system for repairing organic material polluted soil, which comprises a chimney and a rotary kiln reactor, wherein the smoke exhaust port of the rotary kiln reactor is connected with a furnace chamber; the furnace chamber is connected with a cyclone separator; one end of the cyclone separator is connected with a preheating passage; the other end of the cyclone separator is connected with a refeeder; the refeeder is connected with the furnace chamber; the preheating passage is connected with the chimney after passing through a flue gas desulfurization denitration purifier and a bag-type dust remover; an air preheating device is arranged in the preheating passage; one end of the air preheating device is connected with a first blower; the other end of the air preheating device is connected with the rotary kiln reactor and the furnace chamber respectively; and a rotary kiln repaired soil outlet is arranged on the rotary kiln reactor. The invention further discloses a method for repairing organic material polluted soil. According to the invention, the advantages of the thermal desorption technology in the organic material polluted soil repairing process are fully played; and organic material polluted soil, which is difficult to repair, can be repaired fast through the combination of new rotary kiln thermal desorption technology and the circulatory fluidized bed incineration technology.
Owner:HUAZHONG AGRI UNIV

Transport network topological structure safety analytical method and implementation system

InactiveCN101588518AStrengthen data standardization and accuracy managementSpeed ​​up fault location and repair efficiencyMultiplex system selection arrangementsData switching by path configurationOptical pathRoute analytics
The invention discloses a transport network topological structure safety analytical method. The method comprises the steps of firstly, using a node, an apparatus, a circuit, an optical cable, an optical path, a sub-circuit and a sub-optical cable to describe the topological structure of the transport network; then using a graph theory model to express the topological structure of the transport network; and finally using a graph theory to perform structure safety analysis including structure index analysis, optical path route analysis, component failure analysis and / or standby route analysis on the topological structure. The invention also discloses a system for realizing the method. The system is capable of storing, calling and displaying the original data, generated intermediate data and the result data in the analytical processes of the method in real time. The invention can also enhance data normality and accuracy managements, quicken fault location and maintenance efficiency, enhance network risk identification and control, and vividly display network multimedia information so as to improve the accuracy extent and working efficiency of safety management of the transport network topological structure.
Owner:CHINA MOBILE GRP GUANGDONG CO LTD +1

Preparation and application for heavy metal chromium contaminated soil remediation material

The invention discloses preparation and an application for a heavy metal chromium contaminated soil remediation material. Preparation for biological carbon particles comprises the following steps: 1) cleaning, drying and crushing agriculture waste to obtain a substance A; and 2) placing the substance A under a protective atmosphere to deoxidize and carbonize, and grinding and sieving carbonize products to obtain the biological carbon particles. Preparation for supported type nano zero-valent iron particles comprises the following steps: 1) preparing ferrite into a solution; 2) adding biological carbon particles into the solution, and uniformly mixing the biological carbon particles with the solution; and 3) dissolving a reducing agent into a solvent to obtain a mixture, adding the mixture into the system in the last step under the protective atmosphere, stirring the mixture, sufficiently reacting the mixture, separating nano zero-valent iron, washing, drying and grinding the nano zero-valent iron to obtain the supported type nano zero-valent iron particles. The invention further discloses the application of the supported type nano zero-valent iron particles to remediating chromium contaminated soil in situ. The in-situ remediation method for the heavy metal chromium contaminated soil comprises the following steps: adding the supported type nano zero-valent iron particles into soil, uniformly mixing the supported type nano zero-valent iron particles, adding deoxygenated water, and carrying out remediation. The remediation material prepared by the preparation disclosed by the invention is high in efficiency of remediating the chromium contaminated soil, and capable of improving the soil structure and improving the soil fertility.
Owner:师大清远环境修复科技有限公司

Disc brake apparatus with electric parking mechanism

An electric thrusting unit for a disc brake with an electric parking mechanism includes a worm reduction gear and a thrust generation mechanism. The thrust generation mechanism converts rotational movement transmitted by way of the worm reduction gear into linear movement. A worm wheel of the worm reduction gear is supported on the thrust generation mechanism concentrically with a rotational member of the thrust generation mechanism. A drive side gearwheel and a driven side gearwheel are meshed with an output shaft of the electric motor directly or by way of an additional gearwheel so as to transmit a rotational force of the output shaft to the worm. The drive side gearwheel is provided concentrically with the output shaft and so as to rotate together therewith. The driven side gearwheel is provided on a part of the worm concentrically with the worm and so as to rotate together therewith.
Owner:AKEBONO BRAKE IND CO LTD

High temperature self-repairing conductive silver adhesive and preparation method thereof

The invention provides a high temperature self-repairing conductive silver adhesive. The high temperature self-repairing conductive silver adhesive is prepared from the following raw constituents by parts: 100 parts of epoxy resin, 10-30 parts of curing agent, 10-40 parts of epoxy diluent, 240-990 parts of silver pieces, 3-20 parts of coupling agent and 5-20 parts of self-repairing microcapsule; wherein the self-repairing microcapsule is composed of the following raw constituents by parts: 100 parts of epoxy resin, 8-20 parts of latent curing agent, 30-60 parts of diluents, 0.5-2.5 parts of emulsifying agent, 500-800 parts of nano silver wires, 5-16 parts of coupling agent, 60-120 parts of capsule wall material, 0.5-2 parts of antifoaming agent and 150-900 parts of deionized water. The invention also provides a preparation method of the high temperature self-repairing conductive silver adhesive. The high temperature self-repairing conductive silver adhesive has the positive effects that the repairing efficiency is high, the repairing effect is expanded on the basis of the original conductive network, crack-conductive network double repairing is realized, and the long-term using effect of the conductive adhesive is guaranteed, the cost is saved, and the reliability and service life of the conductive adhesive in high temperature working environment are improved.
Owner:CHINA ELECTRONIC TECH GRP CORP NO 38 RES INST

Method for repairing soils polluted by heavy metal Cd

The invention discloses a method for repairing soils polluted by heavy metal Cd, characterized in that a plant used for repairing the metal Cd is Cd-tolerant tobacco K326, a used soil chelation inducer is a hydrochloric acid solution of chitosan, microbes used for activating the heavy metal Cd in the soils are bacterial strain obtained by gathering, screening and separation in a laboratory, the three substances are combined to repair the soils polluted by the heavy metal Cd. The method comprises the following steps: cultivating a K326 seedling to the 3-leaf one-heart stage, then transplanting; before transplanting, adding chitosan; before transplanting, carrying out mass fermental cultivation of separated, screened and purified bacterial strain, adding the active bacterial strain of the heavy metal Cd at the logarithmic phase in the soils, and stirring for the subsequent use; and after transplanting the tobacco plant, regularly carrying out management. According to the invention, a plant-microorganism united repair method is adopted, and a certain amount of microbes of the active heavy metal are added in the soils to effect together, thus the repair efficiency is raised, and the efficiency of repairing the soils polluted by the heavy metal Cd is raised.
Owner:SHENYANG UNIV

Integrated and comprehensive soil in-place position-changing combined remedying equipment

ActiveCN105013806AAchieving Heterotopic Continuous Joint RepairImprove repair efficiencyContaminated soil reclamationEnvironmental resistancePeristaltic pump
The invention discloses integrated and comprehensive soil in-place position-changing combined remedying equipment, and belongs to the technical field of soil remedying. The equipment mainly comprises feeding and discharging machines, heating baking channels, conveying belts, a vacuum pump, a smashing device, a mixer, a solid chemical adding tank, a Venturi conveying pump, an ultrasonic atomizer, a peristaltic pump, a liquid chemical storage tank, a drip washing device, an activated carbon adsorption purification tank, a mud discharging electromagnetic valve and an absorbent storage tank. The modularized design is adopted for the whole set of remedying equipment, flexible matching and combining can be performed according to different types of polluted soil to be remedied, and therefore the cost is lowered. The whole set of equipment can be installed on a trailer to achieve moving operation. The equipment has the multiple remedying functions of thermal desorption treatment, chemical oxidation / restoration, chemical drip washing and others, can achieve in-place position-changing combined remedying on soil containing organic pollutants and heavy metal combined pollution, and is high in remedying efficiency, wide in range, free of harmful gas emissions, safe and environmentally friendly.
Owner:南京康地环保科技有限公司

Pixel structure, touch display panel and liquid crystal display

A pixel structure disposed on a substrate including a scan line, a data line, an active element, a first electrode, and a second electrode is provided. The scan line and the data line are intersected to define a rectangular pixel area. The active element is electrically connected to the scan line and the data line. The first electrode has stripe patterns and connecting patterns located in the rectangular pixel area. Each connecting pattern is connected to the central parts or the parts near the central parts of two adjacent stripe patterns to demarcate or define two silts between the two adjacent stripe patterns. The extending direction of the slits is intersected to the rectangle length of the rectangular pixel area by an angle &thetas; wherein 0°≦̸&thetas;<45°. The second electrode is located between the first electrode and the substrate and part of the second electrode is exposed by the slits.
Owner:AU OPTRONICS CORP

Shape memory intrinsic type self-repairing material as well as preparation method and application thereof

The invention provides a shape memory intrinsic type self-repairing material which is prepared from the following components: a crystal polyether or polyester diol monomer, a diisocyanate monomer, a monomer containing a dynamic covalent bond micromolecule chain extender, a rubber elastic body, a free radical polymeric ultraviolet light initiator, a multi-sulfydryl curing agent and conductive packing. If the shape memory intrinsic type self-repairing material is suffered from mechanical damage, a conductive path consisting of internal conductive packing is damaged, the resistance of the material is increased, under the action of external current, temperature rise can be resulted from the Joule heating effect of the material self, a reversible shape memory effect of the material can be excited, cracks of the material can be shrunk and closed, meanwhile after macroscopic cracking closure, the dynamic covalent bonds inside the material can recombine the material as molecular chains of a fracture surface are diffused with one another and subjected to reversible chemical reaction, at the moment, paths of the conductive packing in the material can be recovered, the resistance of the material can be reduced to an original level, the Joule heating effect can be eliminated, the temperature can be reduced to the room temperature, and the self-repairing process has the characteristics of reversibility and repeatability.
Owner:SUN YAT SEN UNIV

Electric power call first-aid repair system and work order receiving apparatus

The embodiments of the invention provide a first-aid repair call commanding system and a work order receiving apparatus. The system comprises an authority management subsystem, a work order management subsystem and a statistical analysis subsystem. The work order management subsystem comprises a work order management module, a work order distribution module and a work order time management module, wherein the work order management module is used for querying, tracking, merging and leading out work orders; the work order distribution module is used for distributing the work orders so that distributed personnel can carry out order receiving operation conveniently; and the work order time management module is used for monitoring first-aid repair overtime and order-receiving overtime conditions of the work orders and giving prompts.
Owner:ZHANGJIAGANG POWER SUPPLY COMPANY OF STATE GRID JIANGSU ELECTRIC POWER

Polluted sediment ecological coverage carpet capable of inhibiting original algae from revival and growth and application method thereof

The invention provides a polluted sediment ecological coverage carpet capable of inhibiting original algae from revival and growth and an application method thereof, belonging to the field of sediment in-situ restoration and algae control of a eutrophied water body. The invention aims to solve the problems of ecological potential safety hazards, low restoration efficiency, incapability of reutilization and the like in the existing sediment coverage technique. The ecological coverage carpet comprises a thin fiber inverted filter layer, a biological-matrix combined restoration layer, a fabric layer, a quick connection hook, an embedded matrix frame, floaters, stay piles, a microcurrent electrolyzer, solar panels and electrodes. The application method comprises the following steps: analyzing the varieties of algae hypopuses and pollutants in the superficial deposit, selecting the restoration region, laying in the dormancy interval that blue algae do not revive to the water body, analyzing the pollutant content and adsorption characteristics of the adsorptive filter material in the embedded matrix frame, and determining whether to replace the filler or reap the plants. The carpet can be used in sediment improvement and ecological restoration in lakes, ponds, landscape water and other polluted water bodies.
Owner:CHANGJIANG RIVER SCI RES INST CHANGJIANG WATER RESOURCES COMMISSION

Electrical topology identification system and method of low-voltage court for fast fault location

The invention relates to an electrical topology identification system and method of a low-voltage court for fast fault location. At present, according to the existing court identification principle, amode of voltage zero-crossing signal modulation in a short-time short-circuit state of a phase line and a midline is employed; however, a risk of long-time short circuit between the phase line and the midline is caused and thus equipment burning or court fault power failure is caused. The system is composed of a collection and a distribution unit. The collection unit arranged at low-voltage sideoutlet of a distribution transformer is used for detecting a feature signal of a bus to carry out court identification determination and analyzing logic relationships of all nodes to form an electrical topological logic relationship automatically. The distribution unit connected with the collection unit wirelessly is arranged at a branch point or a meter box side. Therefore, the electrical topological logic relationship of the court can be depicted while no power failure is caused; a user under each transformer is checked clearly and thus a user-transformer relationship is identified automatically; the basic data in a distribution court can be reflected truly; and thus the foundation is laid for realizing intelligent management of the grid.
Owner:ELECTRIC POWER RES INST OF STATE GRID ZHEJIANG ELECTRIC POWER COMAPNY +1

Application program exception analysis method and device, computer equipment and storage medium

The invention relates to an application program exception analysis method and device, computer equipment and a storage medium. The method comprises the following steps of: operating an application program, and recording a corresponding log file for the operation condition of the application program; when exception occurs in the operation process of the application program, calling an exception analysis model; reading the log file through the exception analysis model, carrying out exception positioning by utilizing read log information, and outputting exception positioning information; and uploading the exception positioning information to a server. By adoption of the method, the workloads of developers can be effectively decreased and the application program recovery efficiency can be improved.
Owner:PINGAN PUHUI ENTERPRISE MANAGEMENT CO LTD

Laser cladding repairing method for aircraft end-journal part surface

The invention belongs to the technical field of laser cladding, relates to a laser cladding repairing method for aircraft end-journal part surface, particularly to a method for repairing the mechanical wear and scrape malfunction of an aircraft end-journal part after long-time service by adopting the laser fused deposition technology. The method aims at mechanical wear, scrape and other defects on the surface of the part, selects spherical precipitation to harden stainless steel metal dust, adopts reasonable laser cladding technological parameters, and removes residual stress of the part after cladding through the specific heat treatment technology to recover the performance of the aircraft end-journal and realize repairing of lengthening the service life. The repaired end-journal part hardly deforms, and the depth of a heat affected area is no more than 0.5mm; the repairing area does not have the defects of cracks, incomplete fusion and slag inclusion; the serviceability of the repaired end-journal is recovered.
Owner:AVIC BEIJING INST OF AERONAUTICAL MATERIALS

Method for remedying acidified arsenic contaminated soil by biochar-loaded nano-scale zero-valent iron cooperated with bacteria

The invention relates to a method for remedying acidified arsenic contaminated soil by biochar-loaded nano-scale zero-valent iron cooperated with bacteria. The method includes selecting Pseudomonas putida strain MnB1 (ATCC23483); carrying out enrichment culture on the Pseudomonas putida strain in enrichment culture media; inoculating strains in culture media with divalent manganese and carrying out culture on the strains to obtain active metabolites; adding the active metabolites and the green synthetic biochar-loaded nano-scale zero-valent iron into the acidified arsenic contaminated soil anduniformly stirring the active metabolites, the biochar-loaded nano-scale zero-valent iron and the acidified arsenic contaminated soil; carrying out a series of physical-chemical reaction on active manganese oxide, zero-valent iron, biochar and trivalent arsenic or pentavalent arsenic in the soil; converting the arsenic in exchangeable forms into arsenic in residual forms. The method has the advantages that the arsenic in the soil can be effectively immobilized, the pH (potential of hydrogen) of the soil can be increased, and the double purposes of remedying soil acidification and arsenic contamination can be simultaneously achieved; the method is short in remediation time, high in efficiency, wide in treatment range and free of secondary pollution, and stable effects can be realized.
Owner:QINGDAO TECHNOLOGICAL UNIVERSITY

Passivating agent for weakly acidic cadmium contaminated soil and application thereof

The invention discloses a passivating agent for weakly acidic cadmium contaminated soil and application thereof. The passivating agent is compounded and mixed from modified biological carbon, and mineral materials including calcium oxide, a calcium magnesium phosphate fertilizer and a silicon fertilizer beneficial to the soil. The passivating agent is applied to the surface of the weakly acidic cadmium contaminated farmland soil, and the application amount of passivating agent is controlled at more than 1.5 wt% of the soil; and then soil and passivating agent rotary tillage is carried out on a plough layer 20cm above the land surface, and the maximum field water holding capacity is maintained at more than 70% stably for more than ten days to complete the in situ remediation of the weakly acidic cadmium contaminated soil. The passivating agent can effectively reduce the content of available cadmium in soil, restore agricultural function of the polluted land, and ensure food security; the passivating agent contains a lot of organic matters and other nutrients, can provide abundant nutrition for the growth of crops, and has the advantages of environment-friendliness, high repair rate, long-term stability, and high application value.
Owner:NANJING UNIV

Method, device and system for hard disk data recovery

The invention discloses a method, a device and a system for hard disk data recovery. The method comprises the following steps of: when detecting an error while reading data from a hard disk, recording a corresponding logical block address of the data with the error in the hard disk; executing data recovery operation on the data of a first physical block address corresponding to the logical block address according to a preset algorithm, and obtaining the recovered data; transmitting an instruction of writing the recovered data in the logical block address to the hard disk, so as to make the hard disk write the recovered data in the logical block address according to the instruction, wherein the logical block address corresponds to a remapped second physical block address. The invention further discloses a device and a system for hard disk data recovery. The invention aims at providing the method, the device and the system for hard disk data recovery, and the recovered data obtained through the preset algorithm are written in a sector corresponding to the remapped new physical block address, so that the sector with an error or the damaged block of the hard disk can be repaired quickly, and the repair efficiency of the sector with an error or the damaged block is improved.
Owner:HUAWEI TECH CO LTD

Display device and display device failure analysis system and method

The invention relates to a display device and a display device failure analysis system and method. The system comprises the display device and a server. The display device comprises a display chip, an image collector, a detection unit and a communication module, wherein the display chip is used for displaying target video or target images according to a display instruction, the image collector is used for collecting the target images, the detection unit is used for sending a display instruction to the display chip upon receipt of a failure detection instruction, comparing the target images with a preset standard image to obtain difference values of the target images with the preset standard image and generating a failure code according to the difference values, and the communication module is used for sending the failure code to a server which resolves the failure code to obtain failure information, inquires corresponding type of the failure according to the failure information, determines weights of the failure according to the type of the failure and generates prompt information according to the weights. The display device and the display device failure analysis system and method can quickly provide accurate prompt information for maintenance personnel to quickly and accurately maintain the display device when the display device is in failure.
Owner:BOE TECH GRP CO LTD

Compound polypeptide nanometer vesicles with skin repair function and preparing method and application thereof

InactiveCN109875910AWith skin repair functionImproves anti-inflammationCosmetic preparationsToilet preparationsSkin penetrationCholesterol
The invention provides compound polypeptide nanometer vesicles with a skin repair function, and belongs to the technical field of cosmetics. The compound polypeptide nanometer vesicles are prepared from, by weight, 0.01-1 part of regenerated repairing active peptide, 0.01-1 part of antioxidant active peptide, 0.1-5 parts of natural moisturizing active factors, 0.01-1 part of microcirculation-promoting active ingredients, 5-20 parts of lipoid wall materials, 0.1-5 parts of cholesterol, 10-45 parts of polyhydric alcohols and 30-98 parts of water. According to the compound polypeptide nanometer vesicles, repairing components acting on different target spots are provided aiming at different repair mechanisms of the skin barrier; meanwhile, the nanometer vesicles are adopted for covering various hydrophilic and lipophilic active ingredients, a unique closed lipid bilayer structure of the vesicles is utilized, the stability of the repairing compound is significantly improved, the skin penetration amount is increased, slow release of the active ingredients is effectively controlled, and the repairing effect is improved.
Owner:WUHAN BEST CARRIER NANO TECH

Erasure code based failure data linear restoration method

The invention discloses an erasure code based failure data linear restoration method for the purpose of designing a failure data restoration method aiming at erasure code characteristics. The scheme involves constructing a distribution storage system composed of a control node and N storage nodes. The control node is provided with a task management program and a result recovery program and the storage nodes are provided with restoration programs; the task management program selects a new storage node LN for a failure data block; an available data block is selected from available data blocks of a data object to construct a linear restoration path; the restoration programs perform decoding calculating and transmit and merge decoding results along the linear restoration path; and the restoration program of the LN receives a decoding calculation result from the last storage node of the linear restoration path, and the result recovery program receives the restoration success information of the LN. By using the method provided by the invention, the bottleneck bandwidth in a network can be effectively avoided, the transmission distance of data restoration is shortened, the bandwidth cost of failure data restoration is reduced, and the restoration efficiency of failure data is improved.
Owner:NAT UNIV OF DEFENSE TECH

Phytoremediation method for managing composite cadmium-lead-arsenic contaminated soil

The invention provides a phytoremediation method for managing composite cadmium-lead-arsenic contaminated soil. The method comprises the following steps: step S1: selecting a cadmium-enriched castor-oil plant variety; step S2: obtaining cadmium-lead-arsenic composite contaminated soil with neutral acidity and alkalinity; step S3: planting cadmium-enriched castor-oil plants and ciliate desert-grass in an intercropping manner in the cadmium-lead-arsenic composite contaminated soil with neutral acidity and alkalinity for surviving and growth, and harvesting matured castor-oil plants at regular intervals, and carrying out step S5; step S4: harvesting the upper part of the ciliate desert-grass according to the growth height of the ciliate desert-grass, and carrying out the step S5; retaining stubble of the ciliate desert-grass on the soil surface, and carrying out the step S3; step S5: feeding the harvested and matured castor-oil plants and ciliate desert-grass to an exclusive place for concentration and carrying out innocent treatment. The invention further provides a phytoremediation method for managing cadmium contaminated soil. The phytoremediation method is suitable for managing and repairing cadmium-lead-arsenic moderately and slightly contaminated soil, and has good practical application prospect.
Owner:INST OF GEOGRAPHICAL SCI & NATURAL RESOURCE RES CAS
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