281results about How to "Improve migration speed" patented technology

The invention discloses a virtual machine live migration method, a virtual machine migration management apparatus, and a virtual machine live migration system. The method comprises following steps: the virtual machine migration management apparatus maps first mirror image files of a first virtual machine working on a source terminal physical machine to an object terminal physical machine, so that second mirror image files having correspondence relations with the first mirror image files can be generated on the object terminal physical machine; the virtual machine migration management apparatus sends migration commands to the source end physical machine; the virtual machine migration management apparatus controls a second virtual machine to work on the object terminal physical machine through calling memory data of the first virtual machine and the correspondence relations, wherein the memory data of the first virtual machine is stored in the object terminal physical machine, and the second virtual machine is pre-established on the object terminal physical machine and having the same configuration with the first virtual machine; and the virtual machine migration management apparatus synchronizes disk data in the first mirror image files to the second mirror image files when the second virtual machine works on the object terminal physical machine. According to the invention, a technical problem that the live migration time is long due to a pre-copy manner is solved.

The invention discloses an application cluster migrating method and migrating device based on a service model. According to the embodiment of the invention, the automated migration of all nodes and dependence of an application cluster are realized through the service model. Through analyzing a software mirror image on which each host machine depends, the host machine of a target data center is equipped with software mirror images on which the host machine depends in batch, the application cluster migrating speed is improved, and the downtime of cluster migration is reduced. The environmental parameter of a target application cluster is bound to a node configuration document template, the configuration file of the target cluster is generated, and thus the configuration file migrating efficiency of the application cluster is improved. The mirror image warehouse of the target data center is used as the mirror image agent of the target application cluster, a needed mirror image is obtained and cached from the mirror image warehouse of a source data center according to needs, and thus the mirror image installation of the application cluster is accelerated.

A process for preparing rutile-type titanium pigment powder by dual-effect crystal seed method includes such steps as preparing dual-effect crystal seeds, hydrolyzing titanium liquid while adding the crystal seeds while plays the role of crystal nucleus of hydrolized metatitanic acid particle, and calcining where it plays the role of the crystal nucleus for rutile-type phase change. Its advantages are low calcining temp, low cost and high output.

The invention discloses an antibiotic pharmaceutical wastewater processing method and an antibiotic pharmaceutical wastewater processing device, and belongs to a wastewater processing technology. According to the invention, a porous filtering membrane is specifically arranged between an anion-exchange membrane and a cation-exchange membrane of an electrodialyzer membrane reactor, such that electrodialysis is intrinsically coupled with a membrane filtering process. Macromolecular substances such as mycelia, proteins, and colloidal are retained with a sieving effect of the porous filtering membrane, such that ion-exchange membrane surface pollution is reduced. Also, under an effect of a direct current electric field, with a selective permeability of the ion-exchange membranes upon charged ions, separation and concentration of anions and cations, and charged antibiotic ions are realized. With an adopted external direct current electric field, a specific solute can be effectively prevented from forming membrane pollution on the surface of the porous filtering membrane, such that the processing process can be safely and stably operated. With the method and the device, antibiotic wastewater processing system investment and operation cost can be greatly reduced; and salt ions and residual antibiotics can be highly efficiently recovered from pharmaceutical wastewater. The method and the device have important application values in antibiotic production and wastewater processing.

The invention belongs to the technical field of a limestone-gypsum wet-method flue gas desulfuration process and relates to a multifunctional composite additive for a wet-method flue gas desulfuration process and a using method thereof. The composite additive comprises the following components in percentage by mass: 31 to 45 percent of nylon acid, 31 to 45 percent of sodium humate, 6 to 9 percentof organic silicon defoaming agent, 2 to 5 percent of potassium formate, 2 to 5 percent of manganese sulfate and 2 to 5 percent of p-hydroxybenzoic acid. The composite additive can promote the dissolution of the limestone and reduce the using amount of the limestone, has an enhancement factor for improving an absorption reaction of sulfur dioxide (SO2), accelerates the migration speed of SO2 gas liquid, promotes the adsorption reaction of the SO2 in a liquid membrane, inhibits the soft scales of calcium sulfate (CaSO3) from generating, improves the pH value buffer capacity of limestone slurry, slows down the reducing speed of the pH value in the process of absorbing the SO2 by the desulfuration slurry continuously, and achieves the effect of avoiding bubbling and overflow of the desulfuration slurry.

The invention discloses a method for data migration of a non-relational database HBase. According to the method, by reading configuration file information of users, data within a time period designated by the users are migrated from an old HBase cluster to a new HBase cluster. The method has the advantages that by designing RowKey, group information and time information of the data are embodied on the RowKey, and whether the data corresponding to the RowKey are within a migration time range designated by the users can be directly identified by scanning the RowKey during data migration; groups serve as data migration units, every group serves as a check point, the range of the non-synchronous data between the old HBase cluster and the new HBase cluster can be rigidly controlled within one group when abnormal conditions occur, and time required for restoring data synchronization is reduced; log information is recorded in the data migration process to be used for treating the abnormal conditions in the data migration process, synchronization of the data between the old cluster and the new cluster is guaranteed, and data migration between the HBase clusters can be finished accurately and efficiently.

The invention discloses a repairing system and method for heavy metal-organic combined polluted soil and underground water. The repairing system comprises an electric repairing system, a resistance heating system, a soil gas-phase extraction system, an extracted gas phase treatment system and a system switchover system. The electric repairing system comprises a positive electrode and a negative electrode connected with a direct current power source, and the positive electrode and the negative electrode are arranged in a positive electrode electrolytic cell and a negative electrode electrolytic cell respectively. The resistance heating system comprises a positive electrode and a negative electrode connected with an alternating current power source. The system switchover system comprises a control device which controls the switching-on and off of a first switch and a second switch through a temperature detector probe. According to the repairing system, the electrodes are applied to the resistance heating system and the electric repairing system, effective combination and unification of the electric repairing technology and the heat treatment technology are achieved, equipment of the system is simplified, the repairing effect is enhanced, and the removal efficiency is improved.

The embodiments of the invention disclose a method for manufacturing an organic and inorganic perovskite crystal film. The method comprises: cleaning a flexible substrate; forming an organic and inorganic perovskite film on the flexible substrate; and annealing the organic and inorganic perovskite film in a steam atmosphere of N, N-dimethyl formamide (DMF) or dimethyl sulfoxide (DMSO). In the embodiments of the invention, in the solvothermal annealing process of the DMF or DMSO steam atmosphere, small crystal grains are continually reduced, while large crystal grains are continually grown, so that the average grain size of the organic and inorganic perovskite crystal film is continually increased, more crystal grains in the [220] direction can be obtained, the service life of current carriers can be prolonged, the growth of the crystal grains is accelerated, the crystal grains are larger, grain boundary recombination can be reduced, and the photoelectric conversion efficiency of an organic and inorganic perovskite solar cell can be improved.

The invention relates to a method and device for restoring polluted soil and treating solid wastes. A cathode reaction tank and an anode reaction tank are respectively arranged at the two ends of soil/solid wastes, a water supply layer is arranged at the bottom of the soil/solid wastes and contains a chemical agent which can improve the solubility of organic pollutants and heavy metals in water, and a replaceable pollutant collecting layer covers the top of the soil/solid wastes which are internally provided with a replaceable artificial focal zone. The temperature value of the soil/solid wastes is increased to dozens of degrees even hundreds of degrees by applying a high voltage and large current; volatile organic pollutants volatile from the soil/solid wastes due to a high temperature, and nonvolatile organic pollutants and the heavy metals rise to the collecting layer along with water and are left in the collecting layer after the water is evaporated; and partial heavy metal ions are transferred to the electrode tank and the artificial focal zone along the electric field direction. Hydrogen and oxygen generated at a cathode and an anode are respectively collected for burning the volatile pollutants in the collecting layer and the focal zone; and the oxygen also can be made into ozone for oxygenizing pollutants in the soil/solid wastes or be cleared out.

The invention belongs to the technical field of lithium-ion batteries and particularly relates to a lithium-ion battery pole piece with gradient porosity and a preparation method thereof, and the preparation method comprises the following steps: (1) mixing powder pore-forming agents with different contents with an active material, a conductive agent and a polymer binder according to the number ofdesigned pole piece layers to obtain multiple parts of electrode slurry with different pore-forming agent contents; (2) coating a current collector with the electrode slurry with the lowest pore-forming agent content, drying, and carrying out primary rolling compaction by using a compression roller to obtain a first coating; (3) applying the electrode slurry on the surface of the first coating layer by layer according to the sequence of the pore-forming agent contents from low to high; (4) heating and drying a pole piece to decompose and escape the pore-forming agents, and forming a gradient pore channel in the coating; and (5) carrying out secondary rolling on the dried multi-layer structure pole piece by adopting an embossing roller with a continuous hemispherical convex point structure.Compared with the prior art, the method has the advantages that the pole piece with the gradient porosity is prepared, high energy density is obtained through rolling, meanwhile, good rate capabilityis achieved, and the utilization rate of the active material is increased.

The invention discloses a fluoride-free water-repellency stain-release multifunctional finishing agent and a preparation method and application thereof. The fluoride-free water-repellency stain-release multifunctional finishing agent is a waterborne emulsion or waterborne solution of a polymer shown in a formula I. The structural formula of the polymer is shown in the formula I, and in the formulaI, R1 is a long-chain acrylate or long-chain methacrylate structure chain segment; R2 is a cage type silsesquioxane structure chain segment containing a mono-acrylate group or a mono-methacrylate group; R3 is a polyethylene glycol methanal structure chain segment containing a mono-methacrylate structure or a mono-acrylate structure; R4 is a structure chain segment of a functional monomer and is selected from an acrylate or methacrylate monomer containing at least one of hydroxyl, an epoxy group, an amide group, dimethylamino, carboxyl, an ester group, an alkoxy, a blocked isocyanate group anda halogen end group, and a, b, c and d represent the degrees of polymerization. The finishing agent is environmentally friendly, capable of removing stains easily, free of biologic toxin and not degradable; preparation is easy, and conditions are mild.

The invention specifically relates to a method for producing a graphite negative-electrode material by using needle coke, and the negative-electrode material, belonging to the field of graphite negative-electrode materials. According to the method, needle coke is subjected to crushing, spheroidizing, screening, batching, coating, graphitization and screening successively so as to obtain the graphite negative-electrode material. In the step of batching, 10 to 15 parts of needle coke with a particle size in a range of 10 to 15 [mu]m, 50 to 55 parts of needle coke with a particle size in a rangeof 15 to 25 [mu]m and 20 to 35 parts of needle coke with a particle size in a range of 25 to 30 [mu]m. The invention has the beneficial effects that needle coke with three different particle sizes isused for preparing the carbon negative-electrode material, and small-particle-size needle coke which is large in specific surface area, short in the path that lithium ions take to enter particle centers and small in resistance is mixed with larger-particle-size needle coke which is small in specific surface area, long in the path that lithium ions take to enter particle centers and large in resistance, so the advantages of the small-particle-size needle coke and the larger-particle-size needle coke complement each other; and thus, the coated integral needle coke has large tap density and smallspecific surface area, and better facilitates preparation of the negative-electrode material with excellent performance.

The invention relates to a method for removing soluble heavy metal ions in situ from soil or mud/powdery deposits. In the method, a negative electrode and a positive electrode are directly inserted into the soil or a material deposit containing the soluble heavy metal ions, the driving power source of the negative electrode and the positive electrode is a pulse power source, and the positive of the pulse voltage output by the pulse power source is connected with the positive electrode, while the negative is connected with the negative electrode. The method provides the pulse power source capable of generating high-impact electric field force, eliminates three electrode polarization phenomena which cannot be overcome by the conventional DC kinetics method, has no secondary pollution on environment, and greatly improves the efficiency of removing the heavy metal ions from the soil or mud/powdery waste materials through in-situ migration by adopting the conventional DC kinetics method.

The invention discloses a method for preparing a biochar/ammonium vanadate lithium ion cell cathode material. The method comprises the steps of cleaning and cutting a biomass preformed body into pieces, drying the biomass preformed body, and adding concentrated nitric acid for homogeneous reaction, so that a reaction product is obtained; conducting suction filtration and drying on the reaction product, and carbonizing the reaction product in a tubular atmosphere oven, so that a carbonized product is obtained; conducting washing and suction filtration on the carbonized product, and drying the carbonized product, so that porous biochar is obtained; finally, adding biochar into a NH4VO3 solution obtained from deionized water by means of ammonium metavanadate, and placing the mixture in a hydrothermal induction heater, so that the biochar/ammonium vanadate lithium ion cell cathode material is obtained. The obtained biochar/ammonium vanadate composite material has excellent conductivity, and specific capacity and stability are also improved remarkably. The preparing method is simple, reaction temperature is low, reaction time is short, subsequent processing is not needed, environmental friendliness is realized, and large-scale production can be achieved with the method.

The invention discloses an inter-cluster data migration method and system, a server and a computer storage medium. The method is used for performing data migration between a first cluster and a second cluster, and the first cluster and the second cluster each comprise a main node and at least one sub node; the method comprises the steps that according to a data migration request, data is written by the sub nodes in the first cluster concurrently into a designated path of an intermediate storage system; the main node of the first cluster backs up a data sheet structure to a main node locally in a list file mode, and sends a sheet file to the main node in the second cluster so that the main node in the second cluster can synchronize the data sheet structure to the sub nodes in the second cluster; the sub nodes in the second cluster reads and stores data from the designated path of the intermediate storage system currently according to a data redistribution strategy of the second cluster, the data migration speed is increased, and the time needed by data migration is shortened.

The invention proposes a virtual machine template mirror image management method and system. The method comprises: obtaining an instruction of synchronizing a virtual machine template mirror image of a first data center to a second data center by triggering; detecting whether the virtual machine template mirror image exists in the second data center or not; and if not, synchronizing the virtual machine template mirror image to the second data center according to a preset synchronization parameter. When the virtual machine template mirror image does not exist in the second data center, the virtual machine template mirror image is automatically synchronized to the second data center according to the preset synchronization parameter, so that the data transmission during virtual machine migration can be reduced. In addition, the invention also proposes a virtual machine migration method and system.

An information reproducing method and an information reproducing device in which the key renewal block (KRB) of the latest version is selectively used to encrypt the content to store the encrypted contents in a recording medium. A plural number of KRBs of different generations and versions are stored in a recording medium. If the latest KRB is detected, it is stored in a memory unit within the recording and/or reproducing device. A plural number of KRBs having plural different generations or versions are stored on the recording medium. With the present method and device, in storing the content in the recording medium, the latest usable one of the KRB in the memory unit of the reproducing device and plural KRBs on the recording medium is detected to acquire an encrypting key, such as a media key, to execute the content encryption. In this manner, the encrypted content based on a KRB of a newer version can at all times be stored on the recording medium.

The invention provides an acellular dermal matrix guided tissue regeneration membrane material as well as a preparation method and application thereof, and relates to the technical field of medical biological materials. The preparation method provided by the invention comprises the following steps: pretreating, removing an epidermal layer, preparing a loose surface, stabilizing, performing the accellular treatment, washing, and sterilizing. A membrane material prepared by the method provided by the invention adopts fish skin as a raw material and has a three-dimensional space framework structure, and comprises a compact surface formed by a biological substrate membrane and a collagen loose surface formed by a dermal scaffold. By adopting the membrane material provided by the invention, therisk of the existing tissue restoration material in carrying and propagating the human-animal viruses can be avoided, the cell components can be completely removed, the immunogenicity is low, the clearance of the collagen fibers is increased, a corium layer structure is reserved, the tissue compatibility is good, the mechanical shielding effect is good, and the generation of new bones can be facilitated; and when used for restoring and treating the bone deficiency of an oral implantation operation, the material is digestible, and the second operation and the injury of the membrane material topatients can be effectively avoided.

The invention discloses a preparation method of a large-power high-magnification lithium iron phosphate battery. The method is characterized in that a modified lithium iron phosphate material, a conductive agent, an adhesive and a dispersing agent are used for preparing a positive plate; then, a conductive agent, a negative active substance, an adhesive, a thickening agent and a modified lithium iron phosphate material are used for preparing a negative plate; finally, the positive plate, the negative plate, a diaphragm and electrolyte are made into a soft battery through the steps of lamination, injection and assembling, and the soft battery is subjected to formation and capacity grading to obtain the large-power high-magnification lithium iron phosphate battery. By improving the conductivity of the positive plate and the negative plate, the high-magnification discharging capacity of the battery can be improved, the large power needed by a new energy car for high-speed driving, climbing, starting and rapid charging can be achieved, and the application range of the lithium-ion battery can be enlarged.

The invention discloses a fast-charging high-power winding column type lithium ion battery which comprises a positive pole piece, a negative pole piece and a porous isolating membrane, the positive pole piece, the negative pole piece and the porous isolating membrane are wound into a column type core body in sequence, a metal case is sheathed outside the core body, and an electrolytic liquid is injected into the metal case. The fast-charging high-power winding column type lithium ion battery is characterized in that a positive pole material is one or more than one of lithium cobalt oxide, lithium manganese oxide, three-element material, aluminum-doped nickel cobalt lithium, lithium iron phosphate and lithium vanadate; a negative pole material is one or more than one of graphite and lithium titanate. The positive current collector is a pretreated aluminum foil or aluminum mesh with the thickness of 8-30 micrometers; and the negative current collector is a copper foil, a copper mesh, a nickel-plated iron foil or a nickel-plated iron mesh with the thickness of 8-30 micrometers. An electrolyte in the electrolytic liquid is one or a mixture of lithium hexafluorophosphate and biethyl diacid lithium borate; and a solvent in the electrolytic liquid is a mixture of two or more than two of EC (Ethylene Carbonate), PC (Propylene Carbonate), DMC (Dimethyl Carbonate), DEC (Diethyl Carbonate), EA (Ethyl Acetate) and the like. In the invention, not only can high-power output of the battery be realized, but also the fast charging of the battery can be realized, and safety performance is high.

The invention provides a cathode active material of a lithium ion secondary battery. The cathode active material comprises a carbon material core and a coating layer formed on the surface of the carbon material core, wherein the coating layer contains amorphous carbon and doping elements, and the doping elements include a nitrogen element. A carbon material is taken as a core of the cathode active material for the lithium ion secondary battery, and the coating layer containing the amorphous carbon and doping elements is arranged on the surface of the carbon material, so that the cathode active material has the advantages of long service life, high capacity, high magnifying power charge and discharge characteristics and low cost; by utilizing the cathode active material, the charging velocity of the battery can be effectively increased, and particularly, the rapid charging capacity of the battery at a low temperature can be effectively increased. The invention further provides a preparation method of the cathode active material, a cathode pole piece of the lithium ion secondary battery and the lithium ion secondary battery.

The invention discloses a nickel silicide layer forming method and a semiconductor device forming method, wherein the nickel silicide layer forming method comprises the following steps of: providing a substrate, and forming a dinickel silicide layer on the surface of the substrate; forming a hydrogen ion containing silicon nitride layer on the surface of the dinickel silicide layer; and carrying out secondary annealing treatment on the dinickel silicide layer so as to form a nickel silicide layer. Before the step of carrying out secondary annealing treatment on the dinickel silicide layer so as to form a nickel silicide layer, a hydrogen ion containing silicon nitride layer is formed on the surface of the dinickel silicide layer, and in the process of carrying out secondary annealing treatment, hydrogen ions in the silicon nitride layer are diffused into the dinickel silicide layer, so that the finally formed nickel silicide layer internally contains hydrogen ions, therefore, the resistance of the nickel silicide layer can be effectively decreased, and the RC delay of a circuit can be reduced.

The invention discloses a data online migration method and device, and relates to the technical field of computers. The method comprises the following steps: regularly inquiring a migration switch identifier and a dual-operation switch identifier of a cache center; when the migration switch identifier is in an on state and the dual-operation switch identifier is in an on state, obtaining to-be-migrated data from a source database, and storing the to-be-migrated data into a task pool; and migrating the data in the task pool to a target database based on a multi-thread or distributed task execution mechanism. Through the steps, data migration can be executed on the premise that a user is unperceived and the use of a service system is not influenced, so that the data migration speed and the migration accuracy are improved.

The invention relates to a database data migration-oriented data verification method. Compared with the prior art, the database data migration method and system have the advantages that each data table is taken as a migration task, a database import/export tool or a customized program is taken as a main measure for reading heterogeneous database data, the tasks are operated in a distributed cluster, a self-defined sub-library algorithm is added in the data processing, read data is divided into a plurality file, and in the tasks, the database import/export tool or the customized program is called to import the data into a plurality of new databases. Various paths of data migrations are carried out at the same time without influencing one another, so that the data migration speed is greatlyimproved. A data verification function is provided, so that the stability and data correctness in the migration process are ensured. In the data migration process, distributed verification is carriedout on the data, so that the safety and completeness of the data verification are ensured. Users are allowed to self-define data verification manners, and finally verified result data is returned to corresponding users.

The invention discloses a graphene oxide modified polymer gel electrolyte and a sodium metal battery; the graphene oxide modified polymer gel electrolyte is prepared from the following components in parts by weight: 50-60 parts of polyvinylidene fluoride-hexafluoropropylene, 1-5 parts of graphene oxide, 5-10 parts of sodium salt, 20-40 parts of non-aqueous solvent, 0.5-5 parts of additive and 3-6parts of absolute ethyl alcohol. The invention also discloses the sodium metal battery applying the graphene oxide modified polymer gel electrolyte. The gel electrolyte disclosed by the invention hasrelatively high ionic conductivity and excellent mechanical property, and by introducing the graphene oxide, the ionic conductivity can be improved and the mechanical property of a membrane can be improved; and sodium is uniformly deposited in a sodium metal full-battery, the compatibility with an electrode is high, and the high reversible capacity and high coulombic efficiency can be achieved.