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41results about How to "Loss mitigation" patented technology

Zinc-nickel static single fluid flow battery

A copper nickel statical single fluid stream battery is composed of a battery pile coupled by multi-section of battery monomers, electrolyte, a battery container and a sediment tank, wherein the battery monomers comprise a nickel electrode anode, a cathode current collector of the sediment zinc, a baffle plate and a liquid injection cover. The cathode active materials are dissolved and stored in the electrolyte, and two battery monomers of the series battery pile are connected in series by the positive and negative electrode connectors. In the charging and discharging processes, the active material dissolvable zinc salt in the electrolyte is converted with the metallic zinc on the cathode current collector backwards and forwards. The invention eliminates the solution storage tank and the liquid pump in the traditional fluid stream battery, realizes the dynamic loop of the active materials in the inner of the battery electrolyte, with small volume, high working pressure, long service life, convenient carrying, which is suitable to be used as the movable power with low cost.
Owner:CENT SOUTH UNIV

Positive electrode material for lithium ion battery and preparation method of positive electrode material

The invention discloses a potassium-doped rich-lithium manganese-based oxide positive electrode material and a preparation method of the positive electrode material. The chemical formula of the positive electrode material can be expressed as Li<(3+x) / 3-y>K<y>Mn<(1+x) / 3>Co<(1-x) / 3>Ni<(1-x) / 3>O2, wherein x is greater than or equal to 0.3, and less than or equal to 0.9, and y is equal to (1+x) / 162. The positive electrode material has extremely high energy density and excellent cycle performance and rate performance. An in-situ potassium-doped manganese precursor is taken as a manganese source for preparing the positive electrode material; the adopted preparation method has the advantages of simple operation, low production cost, short synthesis period, high repeatability and the like, and can be widely applied to the synthesis of the oxide positive electrode materials for the lithium ion batteries.
Owner:FUJIAN INST OF RES ON THE STRUCTURE OF MATTER CHINESE ACAD OF SCI

Public bicycle access method and system based on Bluetooth lock and radio frequency identification monitoring

The invention relates to the public bicycle system, in particular to a public bicycle access method and system based on Bluetooth lock and radio frequency identification monitoring. The construction does not damage road surface. Users can apply the method conveniently. The bicycle extraction process comprises the steps that a bicycle application in a mobile terminal scans a QR code of a bicycle to generate a bicycle renting request containing user identity information and bicycle equipment information, which are sent to a backstage management platform; the backstage management platform determines if the bicycle renting request has authority of renting the bicycle, if the answer is yes, a corresponding Bluetooth secret key is sent back to the bicycle application; the bicycle application calls a Bluetooth equipment to control the unlocking of a Bluetooth lock based on the Bluetooth secret key. The bicycle parking process comprises the steps that the bicycle application receives a locked state sent by the Bluetooth lock, based on a triggered operation, a bicycle returning request is sent to the backstage management platform; the backstage management platform searches corresponding bicycle information based on the user information of the bicycle returning request, and matches with bicycle equipment information reported by all monitoring controllers, if the matching is successful, the bicycle returning is confirmed to be successful.
Owner:BEIJING SUREKAM CORP

Intelligent monitoring and early warning system for highway geologic hazards

InactiveCN105336120AMitigate hazards and emergenciesEnhance the ability of safe and smooth flowAlarmsData collectorGeologic hazards
The invention discloses an intelligent monitoring and early warning system for highway geologic hazards. The intelligent monitoring and early warning system comprises a moisture content collecting instrument, a rain gauge, video monitoring equipment, a displacement sensor, a data collector, a data processing unit and a monitoring unit. The moisture content collecting instrument is embedded into soil of a highway slope and used for collecting moisture content data of the soil of the highway slope. The rain gauge is fixedly arranged on the highway slope and used for collecting rainfall capacity data of the highway slope. The video monitoring equipment is arranged above the highway slope and used for collecting on-site video and image data of the highway slope. The displacement sensor is embedded into the soil of the highway slope and used for collecting surface displacement data of the soil of the highway slope. The data collector is in wireless connection with the moisture content collecting instrument, the rain gauge and the video monitoring equipment, and is connected with the displacement sensor and used for collecting the data. The data processing unit is connected with the data collector through the Ethernet and used for receiving the data. The monitoring unit is connected with the data processing unit and used for monitoring whether the data are abnormal or not. The system achieves high monitoring and early warning functions.
Owner:GUANGXI TRANSPORTATION SCI & TECH GRP CO LTD

Cultivation method capable of improving high-temperature-resistant planting performance of summer corn

InactiveCN109588232ALoss mitigationEnhance ventilation, heat dissipation and light transmissionCalcareous fertilisersAlkali orthophosphate fertiliserTemperature stressChemical control
The invention belongs to the technical field of summer corn planting and particularly relates to a cultivation method capable of effectively improving high-temperature-resistant planting performance of summer corn. According to the cultivation method capable of improving high-temperature-resistant planting performance of the summer corn, the planting date is delayed to mid-to-late June, an original common equal-spacing sowing manner is changed into a narrow-spacing and wide-spacing interval planting manner, a chemical control agent is sprayed on leaf surfaces of corn at the big flare stage forexternal regulation, foliage fertilizer is sprayed on leaf surfaces as assistance for regulation after high-temperature damage, under synergistic effect of all the links, the effects of high-temperature stress on the corn planting yield is effectively relieved, and production and yield are guaranteed.
Owner:MAIZE RES INST SHANDONG ACAD OF AGRI SCI

Toluene disproportionation and transalkylation catalyst and preparation method thereof

The invention relates to a toluene disproportionation and transalkylation catalyst and a preparation method thereof. A purpose of the present invention is mainly to solve the technical problems of high aromatic ring loss and high reaction hydrogen consumption of the catalyst in the prior art. According to the technical scheme, the catalyst contains a Group VIII metal, a silicon-aluminum molecularsieve and an inorganic binder, the content of the metal is 0.001-1.0 wt%, and the metal nanoparticles are selectively deposited on the outer surface of the molecular sieve. According to the present invention, with the application of the catalyst in the toluene disproportionation and transalkylation reaction, the aromatic ring loss rate and the reaction hydrogen consumption are significantly reduced, and the purity of the product benzene and the selectivity of benzene and xylene can be effectively improved.
Owner:CHINA PETROLEUM & CHEM CORP +1

Method and apparatus for restoring data

Embodiments of the present invention discloses a method and an apparatus for restoring data, which relate to the electronic information technology field, can restore backuped data while damaged data exist in all copies. The method comprises making backups of data in need of backups, and generating at least N identical coipies, wherein every copy is mode of at least M slices, N is a positive integer larger than or equal to 2, and M is a positive integer larger than or equal to 1; detecting whether the slices at the same positions in all the copies are damaged or not; and if at least one such slice is not damaged, substituting the not damahed slice for the damaged slice. The method and the apparatus are suitable for restoring data in copies.
Owner:HUAWEI TECH CO LTD

Forward and reverse rotation control and implementation method of Magnus effect vertical-axis wind turbine rotor

The invention relates to a forward and reverse rotation control and implementation method of a Magnus effect vertical-axis wind turbine rotor. The method comprises a circular rail, a rail car, a cylindrical rotor, a rotor motor, a variable frequency speed adjuster, a speed sensor, a brake, buffer wheel energy storage mechanism, a buffer wheel displacement motor, a wind power sensor, a main controller, rotor direction identifiers and the like. The direction identifiers are arranged in such 36 areas as the circular rail; according to wind power signals, a reversing area of the cylindrical rotor on the rail is set online; after the rotor enters the reversing area, the displacement drives one buffer wheel to contact with the rotor; the rotating energy of the rotor is absorbed; then, the rotor is braked; the other buffer wheel reversely rotated is contacted with the rotor to reversely return the energy to the rotor; and the controller gradually improves the driving frequency through the variable frequency speed adjuster in the reversing area according to reverse rotation initial rotating speed obtained by the rotor, so that the rotor obtains reasonable acceleration to achieve the purpose of reducing the energy consumption in rotor steering.
Owner:苏州盛恒兴自动化设备有限公司

Vertical metal smelting device for alloy steel forging and casting

The invention discloses a vertical metal smelting device for alloy steel forging and casting. The vertical metal smelting device for alloy steel forging and casting comprises a high-temperature-resistant shell, wherein a first connector and a second connector are arranged in the middle of a connecting pipe; clamping slots are symmetrically formed in the outer sides of the first connector and the second connector; a filter screen is jointly arranged in the first connector and the second connector; an outer seal ring is jointly arranged on the outer sides of the first connector and the second connector; clamping blocks corresponding to the clamping slots are arranged on the inner side of the outer seal ring; and an inner seal ring corresponding to the filter screen is arranged on the inner side of the outer seal ring. According to the vertical metal smelting device for alloy steel forging and casting provided by the invention, through arranging the filter screen, metal particles in smokedust can be prevented from being discharged to cause the resource waste; and in addition, through taking off the outer seal ring and the inner seal ring on the outer sides of the first connector andthe second connector, the filter screen can be conveniently taken out so as to be conveniently cleaned and prevented from being blocked.
Owner:南通聚星铸锻有限公司

Soil remediation fertilizer prepared from kitchen waste as well as preparation method and application thereof

The invention provides a soil remediation fertilizer prepared from kitchen waste as well as a preparation method and an application of the soil remediation fertilizer. The soil remediation fertilizeris prepared from kitchen waste subjected to anaerobic heat treatment, a complex microbial inoculant and a synergistic component. The soil remediation fertilizer prepared from the kitchen waste can reduce resource waste and effectively improve the problems of grease, germs and worm eggs of the kitchen waste, so that the physical, chemical and biological properties of soil are effectively improved,soil nutrients are maintained, and the utilization rate of the soil nutrients is increased.
Owner:时科生物科技(上海)有限公司

Unit type vacuum moisture regaining loosening technique

The invention relates to a unit type vacuum moisture regain loose technique. The vacuum moisture regain casing which is adopted by the technique is a set of vacuum processing unit casings which are arranged in parallel along a cigarette package conveying channel, each unit casing is evenly connected with a vacuum-pumping system and a humidifying system, cigarette packages which are packed into the casing enter into each unit casing through different paths to go through vacuum moisture regain processing, one battlement cigarette or a turnover casing enters into the unit casing in one time, and single turnover casing is put with 1.5-2 cigarette packages in one time. The invention can evenly distribute the moisture regain rate of tobaccos on each part of the moisture regain casing, and continuously feed tobacco package and carry out the vacuum moisture regain processing to realize continuous production, further, the invention can choose different processing strengthen of vacuum moisture regain of tobacco battlements or sheet tobacco battlements with various qualities and kinds, the energy use rate is high, and the operation of equipment is reliable.
Owner:YUNNAN KUNCHUAN TOBACCO EQUIP CO LTD

Hyperspectral ground feature classification method and system of lightweight dynamic fusion convolutional network

The invention discloses a hyperspectral ground feature classification method and system of a lightweight dynamic fusion convolutional network. The method comprises the following steps: carrying out the normalization processing of a hyperspectral image, and dividing the hyperspectral image into a training set, a verification set and a test set; setting a dual-path interconnection feature extraction module and a classification module, and constructing a network model; training a network model by using the training set, verifying the network model by using the verification set, and taking the weight of the network model of the first generation with the highest precision on the verification set as the final classification model weight; and inputting the test set into the network model of the first generation with the highest precision for testing to obtain a final classification result, performing hyperspectral image classification, and outputting a classification image according to the classification result. The network parameter quantity is further reduced, the network training time is shortened, and a better classification effect is obtained under the condition of fewer training samples.
Owner:XIDIAN UNIV

Catalyst performance evaluation device and catalyst performance evaluation method

The invention provides a catalyst performance evaluation device and a catalyst performance evaluation method. The catalyst performance evaluation device comprises a reaction system, a product separating and collecting system and a liquid supplementing tank, wherein the product separating and collecting system is located at the downstream part the reaction system; the liquid supplementing tank is used for supplementing a solvent to the reaction system. With the adoption of the liquid supplementing tank structure arranged in the catalyst performance evaluation device, a catalyst required by a gas-phase reaction can keep a slurry state with certain concentration in a reactor, so that the catalyst required by the gas-phase reaction is accurately evaluated; with the arrangement of the liquid supplementing tank, the problem of catalyst loss caused by the fact that the catalyst splashes and is bonded on the inner wall of a reaction kettle and cannot be remained in the slurry when the catalyst is stirred at the high temperature is solved to a certain extent. Therefore, with the arrangement of the liquid supplementing tank, the catalyst activity is sufficiently exerted, unnecessary loss of the catalyst is avoided, and a finally measured result about influence of the catalyst on the reaction efficiency is more accurate.
Owner:CHNA ENERGY INVESTMENT CORP LTD +2

Automatic testing method and device

The invention relates to an automatic testing method and device, and the method comprises the steps: obtaining a crash code from a first storage region, and inputting the crash code to a to-be-testedprogram, so that the to-be-tested program crashes; obtaining crash information when the to-be-tested program is in a crash state; acquiring a control code from a second storage area, and constructinga control code segment according to the control code, the crash code and the crash information; inputting the control code segment into the to-be-tested program to control the to-be-tested program; obtaining a test instruction from a third storage area, and inputting the test instruction into the to-be-tested program to obtain output of the to-be-tested program; and according to the output of theto-be-tested program, determining whether the to-be-tested program is controlled to be authorized or not. According to the automatic testing method and device provided by the invention, the to-be-tested program can be automatically tested, and the testing efficiency of the to-be-tested program is improved.
Owner:北京丁牛科技有限公司

Preparation method of formaldehyde gas sensitive materials based on tin mud modification in tin plating process and application

The invention belongs to the field of comprehensive recycling of industrial waste tin, environmental protection and semiconductor oxide formaldehyde gas sensors, and relates to a preparation method offormaldehyde gas sensitive materials based on tin mud modification in a tin plating process and an application. The formaldehyde gas-sensitive materials are prepared from waste tin mud existing at the bottom of a plating bath on a tin plating production line by acidification activation, washing, drying, noble metal doping and subsequent heat treatment. The prepared gas sensor has excellent gas-sensitive performance such as high sensitivity, fast response, high recovery speed and the like for formaldehyde. Effective and reasonable utilization of tin resources is realized, the economic cost isreduced, environmental pollution caused by waste is reduced, and the preparation method is environmentally friendly.
Owner:NORTHEASTERN UNIV +1

Application of chickpea sprout extracts in medicines for preventing deficiency of estrogen

The invention relates to application of chickpea sprout extracts in medicines for preventing deficiency of estrogen. The chickpea sprout extracts are chickpea sprout isoflavone extracts, are used as estrogen receptor regulator, and are used for preparing medicines and health care products which are used for preventing or treating climacteric syndrome and osteoporosis. Tests show that the chickpea sprout isoflavone extracts can directly act onto the uterus of a patient, can remarkably increase estradiol level in blood serum, have regulating and controlling effects to a hypothalamus-hypophysis- neuroendocrine system, remarkably increase thighbone density and relative bone volume of an SD (Sprague Dawley) rat without the ovary, increase the thickness of bone trabecula, reduce separating degree of the bone trabecula, decrease the quantity of osteoclast, can alleviate bone loss of the thighbone of the rat due to the fact that the ovary of the rat is removed, increase bearing capacity of the thighbone, play an important role in regulating internal secretion conditions of middle-aged and elderly women after menopause, improving menopause symptoms such as hot flash, palpitate, skin dryness and the like and reducing possibility of osteoporosis, and lay a foundation in industrial development of functional factors of chickpeas.
Owner:XINJIANG TECHN INST OF PHYSICS & CHEM CHINESE ACAD OF SCI

Lithium-sulfur battery

The invention discloses a lithium-sulfur battery. The battery comprises a positive plate, a negative plate, a diaphragm and a liquid retention material; the positive plate comprises a current collector and a positive active material layer, and the positive active material layer comprises a sulfur-based positive active material; and the electrolyte is stored in the electrolyte retention material, and the electrolyte can be reversibly stored and released in the charging and discharging process of the electrolyte retention material. The lithium-sulfur battery comprises the electrolyte retention material, the electrolyte retention material can reversibly store and release the electrolyte in the charging and discharging process, the volume of the positive electrode is expanded along with the discharging process, the electrolyte retention material in the battery is gradually pressed, and the electrolyte is forced to be gradually released along with the discharging depth, so the excessive dissolution and loss of polysulfide in the discharge process under high liquid injection quantity are relieved, and the first discharge capacity of the battery is effectively improved. In addition, sufficient electrolyte in the electrolyte retention material can support normal charging and discharging circulation of the battery, and the problem of circulation diving under the condition of poor electrolyte is solved.
Owner:CHINA AVIATION LITHIUM BATTERY RES INST CO LTD

Culture wastewater resourceful concentration and recycling device and technology

The invention provides a culture wastewater resourceful concentration and recycling device and technology. The culture wastewater resourceful concentration and recycling device is characterized by comprising an anaerobic reactor, a filtering tank, an alkalinity regulating tank, a preheating tank, a condensation circulating groove and a film distillation assembly; a biogas slurry outlet of the anaerobic reactor is connected with the filtering tank, a biogas slurry of the filtering tank is connected with the alkalinity regulating tank, a biogas slurry outlet of the alkalinity regulating tank is connected with the preheating tank, the preheating tank is connected with the hot feed liquid side of the film distillation assembly, and the condensation liquid side of the film evaporation assembly is connected with the condensation circulating groove. The method and device have the advantages that biogas and biogas slurry obtained after preliminary anaerobic treatment of culture wastewater are sufficiently utilized, biogas slurry is concentrated and purified water is recycled through the film evaporation technology; biogas generated through anaerobism is adopted as a main energy source of the whole treatment technology, the technology system can be operated on the spot, and energy consumption of the system is lowered; ammonia nitrogen elements in the concentrated solution can be effectively stored.
Owner:DONGHUA UNIV

Washing pipe system of dry-method acetylene generator

The invention provides a washing pipe system of a dry-method acetylene generator and relates to the technical field of chemical equipment. The washing water inner circulation system of the dry-methodacetylene generator comprises the dry-method acetylene generator, a gas-phase scraper, a washing cooling tower, a residue water recycle pump, a gas pipe and a washing water pipe; one end of the gas-phase scraper is connected with the dry-method acetylene generator, and the other end of the gas-phase scraper is connected to the washing cooling tower through the gas pipe; one end of the residue water recycle pump is connected with the washing cooling tower through the washing water pipe, and the other end of the residue water recycle pump is connected with the a dry-method acetylene generator water injection spray nozzle and the gas-phase scraper. According to the washing pipe system of the dry-method acetylene generator, the washing water pipe is arranged to be the inner circulation system,then washing water of the generator is directly recycled, the problems of acetylene gas loss and environmental pollution in the prior art are solved, and the washing pipe system has the advantages ofenvironmental protection and energy consumption reduction.
Owner:重庆市映天辉氯碱化工有限公司

Slow release fertilizer for inhibiting soil urease activity and preparation method

The invention relates to the technical field of chemical engineering, in particular to a slow release fertilizer for inhibiting soil urease activity and a preparation method. Urea, humic acid, potassium sulfate, urea phosphate, gossypol acetate and tung oil serve as raw materials and are granulated and coated to prepare the slow release fertilizer. The slow release fertilizer has the advantages of high efficiency, low cost, no toxicity and no pollution.
Owner:GUIZHOU UNIV

Waste heat collecting device for superhigh temperature shaft kiln feeding end

InactiveCN106979683APlay a role in maintainingMitigate lossControl devices for furnacesVertical furnacesTemperature controlCombustion
The invention provides a waste heat collection device for the feed end of an ultra-high temperature shaft kiln. In this technical proposal, a shell for heat collection is added at the port of the feed pipe of the conventional shaft kiln, and the heat radiating upward from the port is eliminated. The heat plays the role of blocking and collecting. The invention covers the outer periphery of the shell with a heat insulation layer, which can maintain the heat in the shell and effectively improve the recovery rate of waste heat; The wind is guided into the shell, and then transported to the outside through the air duct, which helps to alleviate the problem of material dust blocking. The feed hopper located at the upper end cover is used to add materials into the shaft kiln, and the large and small structure of the feed hopper also helps to alleviate heat loss. The temperature sensor located on the end cover can monitor the internal temperature of the shell, and can cooperate with the control system to control the fan speed according to the temperature. The invention has outstanding innovation and remarkable technical effect.
Owner:山东泰贝利尔环保科技有限公司

A method and application for preparing formaldehyde gas-sensing material based on modification of tin sludge in tin plating process

The invention belongs to the fields of comprehensive recycling and utilization of industrial waste tin, environmental protection and semiconductor oxide formaldehyde gas-sensitive sensors, and relates to a method and application of preparing formaldehyde gas-sensitive materials based on the modification of tin mud in the tin plating process. The formaldehyde gas-sensitive material of the present invention is obtained from the waste tin sludge existing at the bottom of the plating tank on the tin plating production line through acidification activation, washing and drying, noble metal doping and subsequent heat treatment. The manufactured gas sensor has excellent gas-sensing properties such as high sensitivity, fast response and recovery speed to formaldehyde. It achieves effective and rational utilization of tin resources, reduces economic costs, and reduces environmental pollution caused by waste. It is an environmentally friendly preparation method.
Owner:NORTHEASTERN UNIV LIAONING +1

Locomotive signal system based on wireless sensor network and data source

The invention relates to a network database. The network database includes tracking train interval time data items. A locomotive signal system comprises an annunciator which is used for acquiring spatio-temporal data by a data source on the ground and simultaneously used as a sensor node and a management object of a wireless sensor network to cooperate with a networking annunciator in a network coverage area to monitor the annunciator and generate a locomotive signal of the annunciator and a data source which is used for monitoring the event that the train arrives at the geographic position ofthe data source, generating spatio-temporal data and outputting the spatio-temporal data to the annunciator on the train; a database comprises geographic position element identification code data items used for describing attributes of geographic positions where train operation lines are located, length data items used for describing attributes of the train operation lines between the geographicpositions where the train operation lines are located, and length data items used for describing attributes of the train operation lines. A train working diagram includes tracking train interval timedata items. The system is advantaged in that the train can autonomously and credibly obtain the position and speed information of an adjacent train to control autonomy and driving safety.
Owner:虞萍

Battery combination for improving rate discharge performance of lithium ion batteries

The invention relates to a solution for improving the rate discharge performance of lithium ion batteries, in particular to a battery combination for improving rate discharge performance of the lithium ion batteries. The battery combination comprises the lithium ion batteries, wherein heat-supply batteries are arranged between the lithium ion batteries, and serve as heat sources. Because the heat-supply batteries can perform high-current charge / discharge, certain heat can be generated in the high-current charge / discharge process. According to the battery combination, the heat generated by the batteries are utilized and transferred to the surfaces of the lithium ion batteries, so that the lithium ion batteries (packs) are heated, temperatures of the lithium ion batteries (packs) are increased, and the rate discharge performance of the lithium ion batteries can be improved. The battery combination has the excellent effect that the heat-supply batteries can provide certain energy while serving as the heat sources of the lithium ion batteries.
Owner:JUHEYUAN SCI & TECH CO LTD

Rubber piece and application thereof in connecting pieces and protective pieces

The invention relates to a rubber piece and application thereof in connecting pieces and protecting pieces. The rubber piece comprises a rubber strip body, a reinforcing layer and a plurality of waterbalance strips, the reinforcing layer is integrally formed on one end surface of the rubber strip body; and the plurality of water balance strips are embed and formed on the reinforcing layer in an array. The reinforcing layer is skillfully arranged on the rubber strip body, then the water balance strips are arranged on the reinforcing layer, then the water balance strips are formed into a whole,and when the rubber piece is used according to the humidity condition of an application scene, nano bentonite in the water balance strips can accumulate water under the condition of abundant humidity, and can actively absorb certain water in air under the condition of insufficient humidity. Then, the water loss of the reinforcing layer and the rubber strip body is alleviated to a certain extent along with the molecular migration, so that the situation that the molecular chain fracture reaction is intensified due to excessive water loss is avoided.
Owner:颜军

Refrigerated blueberry chitosan coating fresh-keeping method

The invention relates to a refrigerated blueberry chitosan coating fresh-keeping method, belonging to the technical field of fresh keeping of agricultural products. A chitosan coating fresh-keeping agent comprises the following components in percentage by mass: 3% of water soluble chitosan, 0.75% of glycerol, 0.25% of Sapn 40, 5% of high fructose corn syrup, 3% of high methoxy pectin and 88% of distilled water. Fresh blueberries are pretreated, coated with the chitosan coating fresh-keeping agent and refrigerated to achieve the effect of keeping fresh. With the coating fresh-keeping method, the change of flavor and color and the loss of nutrients for blueberries in the refrigeration and thawing period can be slowed down, especially the problems of texture hardening and juice loss are solved, a new and effective fresh keeping approach is provided for refrigerated blueberries, the quality of the refrigerated blueberries can be obviously improved, and the economic benefit can be increased.
Owner:CHANGCHUN UNIV OF TECH

Digital resource acquisition method and system for mobile communication equipment

The invention provides a digital resource acquisition method for mobile communication equipment. The method comprises the following steps of: forwarding an encrypted downloading address to the mobile communication equipment through a fee processing platform at a web service background, and then monitoring whether the web service background receives a downloading request of the mobile communication equipment in predetermined time; and if the web service background does not receive the downloading request of the mobile communication equipment, actively sending the encrypted downloading address or contents to the mobile communication equipment till the mobile communication equipment downloads the resources successfully. Correspondingly, the invention provides a digital resource acquisition system. The method and the system can effectively solve possible abnormal problems in the digital resource transmitting process, and enhance timeliness and robustness of services. Moreover, the downloaded resources are decrypted by overall encrypted transmission data, abstract verification, digital rights management (DRM) certificate and local stored numbers, and security of the services and force of copyright protection can be effectively ensured.
Owner:PEKING UNIV FOUNDER GRP CO LTD +1

Preparation method of negative electrode of lithium ion battery

The present invention provides a lithium ion battery negative electrode preparation method. The preparation method comprises the steps: providing a first graphite material, a second graphite material and a third graphite material, wherein the average particle size D1 of the first graphite material is 2.2-2.4 microns, and the average particle size D2 of the second graphite material is equal to k1 * D1, k1 is in the range of 1.42 to 1.45, the average particle size D3 of the third graphite material is equal to k2 * D1, and k2 is in the range of 0.56 to 0.58; mixing a first graphite material, a second graphite material and a third graphite material according to a preset mass ratio, wherein the first graphite material: the second graphite material: the third graphite material is 1: (c1 * k1): (c2 * k2), and c1 is 0.56, and c2 is 0.82; adding a binder, a graphite material and a conductive agent into deionized water in sequence to obtain negative electrode slurry, coating a negative electrode current collector with the negative electrode slurry, performing drying, carrying out hot pressing to obtain a pole piece, putting the pole piece and a counter electrode lithium piece into an electrolyte, carrying out electrochemical lithium pre-embedding, taking the pole piece out of the electrolyte, and performing drying to obtain the negative electrode. The negative electrode obtained by the preparation method disclosed by the invention is high in energy density and long in cycle life.
Owner:JIANGSU SUNPOWER
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