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194results about How to "Wide distribution" patented technology

Multi-inter-domain asymmetric group key agreement protocol method in mobile cloud computing environment

The invention discloses a multi-inter-domain asymmetric group key agreement protocol method under the mobile cloud computing network environment. The method comprises the following steps: adopting a bilinear mapping technology and a blind secret key technology to realize a short signature mechanism between a domain secret key management center and a domain terminal; using a short signature technology to realize a multi-inter-domain group key agreement authentication mechanism of terminals distributed in different domains, and further realize asymmetric group key agreement of the terminals distributed in multiple domains. The protocol method disclosed by the invention has the anonymity and the authentication, supports dynamic group key updating of nodes, and realizes the security of forward confidentiality and backward confidentiality of the group keys; on the hypothesis of the Diffe-Hellman bilinear computing problem, the security of the protocol is proved; the computing and communication energy consumption of the protocol is low; the method is good in flexibility, security and practicability, and suitable for cross-domain group key agreement of the terminals distributed in the multiple domains under the mobile cloud computing network environment.
Owner:ZHENGZHOU UNIVERSITY OF LIGHT INDUSTRY

Preparation method for wood-bamboo reinforced resin composite material based on high-pressure densification

The invention relates to a preparation method for a wood-bamboo reinforced resin composite material based on high-pressure densification, and belongs to the field of composite materials and artificialboards. The preparation method for the wood-bamboo reinforced resin composite material based on the high-pressure densification comprises the steps that lignin and hemicellulose are partially removedfrom wood veneers, wood boards or bamboo sheets by a chemical reagent, the chemical reagent is removed by water, and the water is replaced by ethanol or acetone; the wood veneers, the wood boards orthe bamboo sheets with lignin and hemicelluloses removal are put into a mixed solution of a resin system or a resin solution and a flame retardant, a diluent and/or a toughening agent additive, or sequentially put into the resin system or the resin solution and the mixed solution of the additive, so that the resin and additive penetrate into cells and cell pores of the wood or the bamboo; and semi-finished products are assembled into blanks, and high-pressure densification and high-temperature curing are carried out to prepare the high-strength composite material. The preparation method for the wood-bamboo reinforced resin composite material based on the high-pressure densification overcomes the stress concentration problem caused by the pores and the like in an existing artificial board,and the prepared novel structural composite material has good mechanical properties and flame retardancy, so that the application of wood in the structural fields of airplanes, high-speed trains, buildings and the like are greatly promoted.
Owner:INST OF WOOD INDUDTRY CHINESE ACAD OF FORESTRY

Inner inclined support assembled type concrete shear wall prefabricated part

The invention discloses an inner inclined support assembled type concrete shear wall prefabricated part. The inner inclined support assembled type concrete shear wall prefabricated part has the characteristics of strong tensile and shock resistance, light damage degree and low bearing capability and rigidity attenuation degree and is capable of effectively limiting or postponing the crack propagation. The inner inclined support assembled type concrete shear wall prefabricated part comprises double rows of reinforcement steel bar meshes, inclined support longitudinal bars and a shear wall, wherein the double rows of reinforcement steel bar meshes consisting of horizontally distributed bars and longitudinally distributed bars are arranged in the shear wall; tie bars are tied arranged between the reinforcement steel bar meshes; the inclined support longitudinal bars are arranged between the horizontally distributed bars and the longitudinally distributed bars; two short steel bars are arranged between the parallel inclined support longitudinal bars; the short steel bars are perpendicular to the inclined support longitudinal bars; the lower ends of the inclined support longitudinal bars are bent and then vertically extend to performed holes; the upper ends of the inclined support longitudinal bars are bent and then vertically extend out of the shear wall. According to the inner inclined support assembled type concrete shear wall prefabricated part, on the basis of common assembled type shear wall reinforcements, the inclined support longitudinal bars are additionally arranged to form a core bundle with inclined reinforced concrete, so that the seismic capacity of the assembled concrete structure is greatly enhanced.
Owner:SHENYANG JIANZHU UNIVERSITY

Nitrogen and sulfur-co-doped active carbon for supercapacitor and preparation method for nitrogen and sulfur-co-doped active carbon for supercapacitor

The invention discloses a nitrogen and sulfur-co-doped active carbon for a supercapacitor and a preparation method for nitrogen and sulfur-co-doped active carbon for the supercapacitor. The nitrogen and sulfur-co-doped active carbon for the supercapacitor is mainly prepared from the following components in parts by weight through carbonizing and activating processes: 1-2 parts of Dafa sterculiaceae plant fruits which are carbonized in powder and 1-4 parts of an alkaline activator. The preparation method comprises the following steps: (1) carrying out carbonization: 1, carrying out immersion; 2, carrying out hydro-thermal treatment; 3, carrying out centrifugal water filtration; 4, carrying out drying; and 5, carrying out grinding; and (2) carrying out activation: 1, raising and keeping temperature in a stage manner; 2, slowly reducing the temperature; 3, immersing in a hydrochloric acid solution; 4, carrying out water washing; and 5, carrying out drying to obtain the nitrogen and sulfur-co-doped active carbon. The nitrogen and sulfur-co-doped active carbon has the advantages: 1, the preparation process is simple; 2, the prepared active carbon is wide in pore distribution and high in specific surface area; and 3, the nitrogen and sulfur-co-doped active carbon has the advantages of being high in capacity, good in circulating performance, high in charging and discharging efficiencies and the like.
Owner:NANCHANG HANGKONG UNIVERSITY

Distributed optical fiber sensing signal space-time information extraction and identification method

The invention discloses a distributed optical fiber sensing signal space-time information extraction and identification method, and belongs to the technical field of optical cable safety monitoring. Adistributed optical fiber vibration sensing system is used for collecting vibration signals along a communication optical cable, time-space signal samples near a vibration source are labeled with event type labels, and a typical event database is established; a CNN-BiLSTM deep learning model based on the space-time signal structure is constructed; time structure information of each spatial pointsignal of the spatio-temporal signal is mined by using a CNN network, correlation of each spatial point signal in the spatio-temporal signal is mined by using a bidirectional long-short-term memory model, and the model is trained based on a typical event database to obtain an optimal model; and finally, the spatio-temporal signal of the event to be detected is identified by using the optimal model. According to the method, the CNN-BiLSTM deep learning model is utilized to synchronously extract the time structure information and spatial distribution characteristics of the distributed optical fiber vibration sensing time-space signals and perform identification, and the effect of the method is superior to that of a signal identification method which mainly extracts the signal time characteristics in the field.
Owner:UNIV OF ELECTRONICS SCI & TECH OF CHINA

Greenhouse seedling cultivating method for kalopanax septemlobus seeds

The invention discloses a greenhouse seedling cultivating method for kalopanax septemlobus seeds.The method comprises steps of seed collecting, seed processing, seed sprouting, sowing, seedling stage management, outplanting and kalopanax septemlobus seedling cultivating.The greenhouse seedling cultivating method is characterized in that for the seed sprouting process, the bottom of a sprouting disc provided with holes at the bottom is loaded with vermiculite which is 5-6 cm deep, the vermiculite is watered with sufficient water, the disinfected seeds are broadcast on the surface of the vermiculite and covered with a layer of vermiculite of 1-1.5 cm, the sprouting disc is covered with a layer of gauze and watered with sufficient water, the sprouting disc is put in a sunlight greenhouse, the greenhouse temperature is controlled to range from 0 DEG C to 25 DEG C under natural lighting, and the sprouting disc containing the seeds is kept wet.According to the greenhouse seedling cultivating method for the kalopanax septemlobus seeds, highly integrated control over the whole seedling cultivation process is achieved, the method is easy to master, the obtained cultivated kalopanax septemlobus seedlings are high in survival rate, and the technology is convenient to popularize and specially suitable for large-scale industrial seedling cultivation.
Owner:SHANDONG FOREST GERMPLASM RESOURCES CENT

Directional beam based wireless network master-slave synchronization method

The invention discloses a directional beam based wireless network master-slave synchronization method. The directional beam based wireless network master-slave synchronization method comprises the steps of regarding a node which initiates time synchronization in the network as a master node; correspondingly regarding nodes synchronized with the master node as slave nodes; dividing a master-slave synchronization process into a coarse synchronization stage and a fine synchronization stage based on characteristics of directional beam transmission. In the coarse synchronization stage, the master node initiates a synchronization process through directional broadcasting of a coarse synchronization frame; and in the fine synchronization stage, clock slew of the slave nodes and the master node which receive the coarse synchronization frame successfully is removed through directional interaction between a fine synchronization request frame and a fine synchronization response frame, and the time synchronization is realized. After time synchronization of the slave nodes and the master node is finished, each slave node which serves as a master node broadcasts the coarse synchronization frame directionally to neighbor nodes and initiates the synchronization process for the neighbor nodes to further realize time synchronization among all the nodes in the network. The validity of the method is proved by a simulation experiment in the wireless network simulation environment EXata.
Owner:NANJING UNIV OF AERONAUTICS & ASTRONAUTICS

Method and device for power generation by employing multiple dispersed residual heat sources and various residual heat carrier medium

The invention discloses a method of making use of a plurality of dispersed waste heat sources and various waste heat vector mediums for generating. A waste heat generating system is arranged and the system is provided with a plurality of subsystems at the same row; the number of the subsystems is same as that of the dispersed waste heat sources. Each subsystem has a closed circuit cycle device comprising a working fluid condenser, a pump, a waste heat exchanger and a turbine that are connected through pipes in sequence and a motor connected with the turbine; the working fluid to each subsystem is matching with the waste heat vector medium of the subsystem. All subsystems are divided into groups with two in each group and each group has a high temperature subsystem and a low temperature subsystem; the liquid phase working fluid of the low temperature subsystem exchanges heat with the vapor phase working fluid of the high temperature subsystem which has done work and then is sent to the waste heat exchanger of the low temperature subsystem to be vaporized after being preheated; or the liquid phase working fluid of both the high and the low temperature subsystems respectively exchange heat with the vapor phase working fluid of the high temperature subsystem which has done work and then are sent to each waste heat exchanger to be vaporized after being preheated.
Owner:DONGFANG TURBINE CO LTD +1

Musca domestic pupae natural antimicrobial peptide products and preparation method and use thereof

The invention relates to a house-fly pupa natural antibiotic peptide product as well as a preparation method and application thereof; house-fly pupas, the raw material of the antibiotic peptide product, are extracted overnight by acid and hot-processed to collect supernatant; and after going through siever filtration and ultrafiltration precessing, the supernatant is treated with spray dring to obtain the antibiotic peptide product. The preparation technique of the antibiotic peptide product is simple and quick, the yield of the antibiotic peptide reaches 1.2 percent and the recovery rate of the antibacterial activity is over 80 percent. The prepared house-fly antibiotic product consists of peptides which have the molecular weight less than 20kDa and are mainly micromolecular peptides with the molecular weight less than 14.4 kDa. The antibiotic peptide product has broad-spectrum antibiotic activity and no hemolytic activity to blood erythrocytes of mice and is characterized by high temperature resistance, acid and alkali resistance and good stability. The byproducts of the technique can serve as feeding insect protein powder. The prepared antibiotic peptide product can be widely applied to the fields such as the antisepsis and storage of foods, fruits and vegetables, feed additives, cosmetic and the like.
Owner:SUN YAT SEN UNIV

Seedling raising method for watermelons

InactiveCN108293677AIncrease productionOvercoming the disadvantages of difficulty in reproductionGraftingCultivating equipmentsContinuous croppingRootstock
The invention discloses a seedling raising method for watermelons. The method comprises the steps of rootstock preparation, seedling raising preparation, seedbed preparation, seedling raising, management in a sowing period, grafting and management of grafted seedlings. According to the method provided by the invention, watermelon grafting cultivation is performed on the continuous cropping ground,and above operation has the following advantages: 1, an occurrence of blight is effectively prevented; 2, the watermelons can be grown at lower temperature; and 3, a root system of pumpkin rootstockis stronger than that of a watermelon, the grafted seedlings have stronger water absorbing and fertilizer absorbing capacity, and the roots are widely distributed in soil, so that after the watermelons are grafted, fertilizers can be saved, and the yield of the watermelons can be improved; when tissue culture of triploid seedless watermelons is performed, root induction of vegetative propagation seedlings is more difficult, the vegetative propagation seedlings are used as scions to be grafted onto the pumpkin rootstock, so that a shortcoming that seedless watermelon seeds are difficult to reproduce is overcome; when industrialized seedling raising is performed, under the condition of small seeds, branches or buds are grafted onto the rootstock, so that a quantity of the grafted seedlings is greatly increased; and therefore, the method of using pumpkin and gourd as a rootstock and grafting watermelon seedlings is an effective way of development of watermelon planting.
Owner:钟宇民

Construction method for static pressure prestressed pipe pile applied to sea-filling geology

The invention provides a construction method for a static pressure prestressed pipe pile applied to sea-filling geology. The construction method mainly meets pipe pile demands in complex geology environments with rock-filled layer lithology being intermediary weathered and slightly weathered granite, wide distribution range of rock-filled layers, large buried depth, Yanshanian intrusion granite as foundation rocks, compact and hard lithology and uneven distributed rock elevation. According to the provided construction method, a reasonable effective pile foundation construction mode can be selected, and the influence of the geological conditions on basic foundation construction qualities is minimized. Besides, good features of small vibration, low noise and the like of the pipe pile can be guaranteed; the pile breaking rate is greatly reduced in pile foundation infrastructure under ultra-deep rock-filled geology and Yanshanian granite geology conditions; meanwhile, the construction cost is reduced; the construction period is shortened; the problem of difficult pile foundation construction under the complex sea-filled geology condition is completely solved; technological support and references are provided for the pile foundation construction under the similar sea-filled geological conditions.
Owner:THE FIRST CONSTR ENG COMPANY LTD OF CHINA CONSTR SECOND ENG BUREAU +1

Internet of Things-based PM2.5 (Particulate Matter2.5) purification system applicable to public infrastructure

InactiveCN104028379AImprove the outdoor atmospheric environmentImprove contentDeodrantsExternal electric electrostatic seperatorInternet of ThingsEngineering
The invention discloses an Internet of Things-based PM2.5 (Particulate Matter2.5) purification system applicable to a public infrastructure. The Internet of Things-based PM2.5 purification system applicable to the public infrastructure comprises an Internet of Things monitoring center, a communication base station, the public infrastructure and a PM2.5 purification device, wherein the Internet of Things monitoring center is used for monitoring and correspondingly controlling the atmospheric environment around the public infrastructure and operation states of the PM2.5 purification device in long distance; the communication base station is taken as a communication medium between the Internet of Things monitoring center and the PM2.5 purification device; the PM2.5 purification device is capable of generating negative ions in a high-voltage ionization manner and purifying PM2.5 in the atmospheric environment; the opening and closing states of the PM2.5 purification device and the negative ion generation power can be controlled by the Internet of Things monitoring center in long distance. The system is capable of intelligently purifying the PM2.5 in the outdoor atmospheric environment and saving energy.
Owner:NANJING QINGCHE ELECTRICAL TECH

Loading vehicle for high-voltage cable maintenance equipment

The invention relates to a loading vehicle for high-voltage cable maintenance equipment. A bridge tool box, an operation control platform and the high-voltage cable maintenance equipment can be loaded on the loading vehicle. The loading vehicle comprises a cab, an operating chamber and a high-voltage maintenance equipment room, wherein the operating chamber and the high-voltage maintenance equipment room are formed through a partition in the middle of an original carriage, an organic glass observing window is arranged at the upper part of the partition, the bridge tool box and the operation control platform are loaded in the operating chamber, and the high-voltage cable maintenance equipment is loaded in the high-voltage maintenance equipment room; the cab comprises an original vehicle driving seat, an original vehicle operating table, an original vehicle rearview mirror, an alarm lamp controller, a rearview screen and a strip alarm lamp, and the operating chamber comprises an non-standard equipment cabinet, a power generator chamber, a rotatable operating chair, a standard equipment cabinet, a support plate, an original vehicle air conditioner and a case. Compared with the prior art, the loading vehicle has the advantages that the maintenance equipment and accessories are loaded, the maintenance, expansion and heat dissipation of the equipment are ensured, a comfortable movable office environment is built, and the like.
Owner:STATE GRID CORP OF CHINA +1
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