Safety isolation method for cloud side multi-tenant data storage

The invention provides a safety isolation method for cloud side multi-tenant data storage. According to the safety isolation method for cloud side multi-tenant data storage, isolated distributed storage is applied to multi-tenant data storage, when a tenant applies for a data storage space, storage software API provided by an operator is called, a specific virtual storage area is provided for the tenant through division according to the ID of the tenant, the storage area of each tenant is relatively independent and isolated, and when a tenant uses private data, the distributive storage software collects tenant data from a private space in a disk array on the physical layer according to the ID of the user and provides a data service for the tenant in a concentrated mode; for each tenant, the data isolated distributed storage process is automatically completed by a system, transparent encryption and decryption is conducted on the volume levels, of cloud side multi-tenant data, in the storage ...

Nickel-plated nylon 6 nanofiber membrane enzyme-free glucose sensor and preparation method thereof

The invention provides a nickel-plated nylon 6 nanofiber membrane enzyme-free glucose sensor and a preparation method thereof. The glucose sensor comprises an electrode and a nylon 6 nanofiber membrane, wherein the nylon 6 nanofiber membrane is loaded with nano nickel and is fixed on the electrode through a fixing part. The preparation method comprises the following steps: preparing the nylon 6 nanofiber membrane, preparing a nickel-plated nylon 6 nanofiber membrane, treating the electrode and preparing the nickel-plated nylon 6 nanofiber membrane enzyme-free glucose sensor. According to the nickel-plated nylon 6 nanofiber membrane enzyme-free glucose sensor provided by the invention, the sensitivity is 3.8mAcm<-2>M<-1>, the detection linearity range is 0.1mM -15.2mM, and the detection limit is 3.2*10<-5>M (S/N=3). In addition, the glucose sensor is simple in preparation process and high in processing repeatability and has good commercial application prospects.

Security state analysis and statistics method

The invention discloses a security state analysis and statistics method. The method includes the specific implementation processes of data preprocessing, data analysis, security service setting and set security state presentation; the data preprocessing process includes that after acquiring data, an information acquisition system performs hierarchical storage on security incident logs of massive data individuals according to different data requirements, cleans, integrates and classifies the data and sequentially stores the data into each class of log library; the data analysis process includes that log analysis parameters and configuration rules are set, and log data are analyzed, processed and mined to form tracking data streams of the independent data individuals; the security service setting includes that a feature library or resource library is formed through analysis treatment and comparison on big data, and a security service module is used for providing log analysis services to the ...

Backwashing device of desulfurizing absorption tower tray beam

The invention discloses a backwashing device for a tray beam of a desulfurizing absorption tower, which comprises a mounting unit and a backwashing unit, the connecting unit comprises mounting plates arranged at the top ends of the supporting rods respectively, conductive blocks arranged on the two mounting plates respectively, and a connecting wire arranged between the two conductive blocks; and the clamping unit comprises clamping assemblies which are respectively arranged on the two mounting plates and are matched with the conductive blocks, and a driving assembly which is arranged on the supporting rod and is connected with the clamping assemblies. According to the backwashing device for the tray beam of the desulfurizing absorption tower, the two clamping assemblies are lifted through the two supporting frames, heavy pressing plates of the clamping assemblies are matched with conductive blocks, a sleeve of a transformer is clamped and fixed, the conductive blocks make contact with ...

Preparation method of zinc ferrite nanofiber cathode material for lithium ion batteries

Belonging to the technical field of high polymer materials and chemical power sources, the invention relates to a zinc ferrite nanofiber cathode material for lithium ion batteries and a preparation method. The zinc ferrite nanofiber material for lithium ion batteries provided by the invention has a large specific surface area. The method provided by the invention includes: firstly utilizing the electrospinning technology to prepare PAN/PVP/C4H6ZnO4/Fe(NO3)3 composite nanofiber, and then conducting high-temperature calcinations to obtain the zinc ferrite nanofiber. The method has the characteristics of simple and easily controllable preparation process, and low production cost. As a lithium ion battery negative electrode material, the material provided by the invention overcomes the disadvantages of low initial cycle efficiency, poor cycle stability and quick charge-discharge capacity and the like of other methods prepared zinc ferrite nano-particles serving as the lithium ion battery cathode ...

一种IP网络协议转换的方法

The invention relates to technique of converting network protocols for IPV6 message passing through IPV4NATs when IPV4 and IPV6 coexisted period. The method solves following issues mainly: providing common IPV6 address configuration, and message communication between hosts supporting both IPV6/IPV4 protocols as well as host supporting both IPV6/IPV4 protocols and IPV6 host for one or more hosts supporting both IPV6/IPV4 protocols located behind IPV4 NATs. In order to passing through IPV4NATs, IPV6 message is packeted in IPV4-UDP message. Characters of the method are: (1) assigned IPV6 address is general IPV6 address without need of including external IPV4 address of captured host and parameters of external ports, without need of applying to IANA for special prefix; (2) obtaining IPV4 address of IPV6 access router through Web mode; (3) supporting IPV6 message pass through various typed IPV4NATs.

Multiband photosensitive bacteriostatic polyester cotton blended yarn and preparation method thereof

The invention discloses a multiband photosensitive bacteriostatic polyester cotton blended yarn and a preparation method thereof, and relates to the technical field of functional textile preparation. The blended yarn is formed by polyester cotton blended components with the photodynamic effect. The preparation method of the polyester cotton blended yarn comprises a spinning process, a pretreatment process, a photosensitization process and a soaping and drying process, the yarn photosensitization process refers to a fiber dyeing method, an inherent dyeing process in dyeing and finishing production is adopted in the photosensitization process, other procedures do not need to be added, and red cotton fibers and blue and purple polyester fibers are formed through dyeing. And in a blended component yarn system, red and blue or red and purple are shown. The blended yarn is composed of two fibers with different components, the type and the dosage of a certain fiber or a certain photosensitive ...

支持软件安全在线升级的网络设备的产品映象设计方法

On the basis of the on-line programming power of network processor and the on-line security mechanism of software, the VxWorks product map supporting the on-line upgrade of software is configured for the network device based on network processor IXP1200 and VxWorks operating system. It can support the multi-CPU network processor and on-line upgrade of software, fully use the programming power of the network processor, and ensure the software security.

Novel electromagnetic shielding textile fabric and preparation method thereof

The invention discloses novel electromagnetic shielding textile fabric and its preparation method and belongs to the field of textile processing. By a magnetron sputtering technology, nano-silver, nano-copper and nanometer titania particles are respectively sputtered onto a fabric base material to form an uniform nanocomposite film so as to obtain the electromagnetic shielding fabric. The electromagnetic shielding fabric for children's garments has advantages of simple preparation technology, low cost, high binding strength of the film and the base material, uniformly and compactly distributed film, strong adhesive force and no environmental pollution, and has excellent electrical conductivity and electromagnetic shielding performance. Resistance can be less than 10 omega/cm, SE value reaches about 28dB, and more than 99% of electromagnetic wave is shielded. By means of rapid heat-conducting property of metal, the fiber fabric can have effects of regulating body temperature and making the ...

Product map designing method of network equipment supporting software safety on line upgrade

Preparation method of MXene/TPU conductive fiber

The invention discloses a preparation method of MXene/TPU conductive fibers, and belongs to the technical field of composite conductive fiber electrode preparation. According to the preparation method, chemically synthesized Ti < 3 > C < 2 > T < x > MXene nanosheets are subjected to dopamine hydrochloride surface modification to obtain PDA-coated MXene conductive ink, and the PDA-coated MXene conductive ink is loaded to MXene/TPU wet spinning conductive elastic fibers prepared on a large scale in a dip coating mode so as to prepare the PDA-coated MXene/TPU elastic fiber electrode. The conductive characteristic of the composite fiber is utilized to develop a flexible self-energized sensing fabric and a fabric-based friction nano-generator with a designable structure. According to the flexible stretchable fiber electrode, the contradiction among high deformability, electrical properties and wearing comfort of the flexible stretchable fiber electrode is solved; the interface problem of the ...

Novel front oil-gas separation device

The invention discloses a novel front oil-gas separation device which comprises an oil-gas separation mechanism which comprises a lubricating oil tank, a first guide pipe arranged on the lubricating oil tank and an oil-gas separation assembly arranged at the tail end of the first guide pipe. The collecting mechanism comprises a gas tank arranged in the middle of the first guide pipe and a collecting assembly arranged on the gas tank; the filtering mechanism comprises a containing assembly arranged on the air tank, a one-way valve arranged on the containing assembly and an oil pipe arranged between the one-way valve and the lubricating oil tank, and a filtering plate is formed by combining high-density stainless steel superfine chaff strips and can effectively separate part of lubricating oil in air; oil residues can be better limited through the arrangement of an inclined plate, foreign matter in an oil body can be effectively guided into a residue discharging pipe, the oil residues can ...

Cloud data security protection method

The invention discloses a cloud data security protection method, and belongs to the field of data security. The cloud data security protection method comprises the steps that the leakage protection to cloud data is achieved through data leakage protection; through cloud multi-tenant data security isolation, the leakage prevention of multi-tenant data is achieved, and the problem that a service provider manager views, interpolates and deletes user sensitive data without being authorized is solved; the self-security of a server host is promoted through cloud host security enhancement measures; malicious attack detection, service unified authorization and access control, service request identification and service parameter security check of data services are conducted through a service firewall suite, the security protection to big data is achieved, and the problem of user privacy leakage is solved. Compared with the prior art, according to the cloud data security protection method, all-dimensional ...

Lithium-ion battery Sn/CMK-3 nanometer composite negative electrode material preparation method

The present invention discloses a lithium-ion battery Sn/CMK-3 nanometer composite negative electrode material preparation method, and belongs to the technical field of chemical power supplies. According to the present invention, a copolymer P123 is adopted as a template agent and tetraethyl orthosilicate (TEOS) is adopted as a silicon source to carry out hydrothermal synthesis of a mesoporous molecular sieve SBA-15, the SBA-15 is adopted as a template and sucrose is adopted as a carbon source to synthesize an ordered mesoporous carbon material CMK-3, a pressure reducing ultrasound way is utilized to obtain SnO2/CMK-3 nanoparticles, and finally high temperature reduction under the H2 atmosphere is performed to prepare the Sn/CMK-3 nanometer composite negative electrode material. According to the prepared lithium-ion battery Sn/CMK-3 nanometer composite negative electrode material, the SnO2 nanoparticles are added to the mesoporous carbon material so as to be adopted as the buffer system ...

Desulfurizing tower inner wall cleaning device

The invention relates to the technical field of desulfurization tower cleaning, in particular to a desulfurization tower inner wall cleaning device which comprises a desulfurization tower assembly, a tower body, a pipeline arranged on the end face of the tower body, a base station arranged on the other end face of the tower body, an observation window and a crawling ladder, and the observation window and the crawling ladder are arranged on the outer wall of the tower body. The mounting assembly comprises a spraying piece, a mounting plate arranged on the outer wall of the spraying piece, a plurality of clamping grooves formed in the outer wall of the mounting plate and a plurality of clamping blocks arranged on the outer wall of the spraying piece, and the clamping grooves are movably matched with the clamping blocks. When the cleaning device is used, the spraying piece sprays out liquid, the mounting plate is subjected to counter-acting force, then the spraying piece is driven to turn ...

IP network protocol conversion method

The invention relates to technique of converting network protocols for IPV6 message passing through IPV4NATs when IPV4 and IPV6 coexisted period. The method solves following issues mainly: providing common IPV6 address configuration, and message communication between hosts supporting both IPV6/IPV4 protocols as well as host supporting both IPV6/IPV4 protocols and IPV6 host for one or more hosts supporting both IPV6/IPV4 protocols located behind IPV4 NATs. In order to passing through IPV4NATs, IPV6 message is packeted in IPV4-UDP message. Characters of the method are: (1) assigned IPV6 addressis general IPV6 address without need of including external IPV4 address of captured host and parameters of external ports, without need of applying to IANA for special prefix; (2) obtaining IPV4 address of IPV6 access router through Web mode; (3) supporting IPV6 message pass through various typed IPV4NATs.

Security service system based on dynamic extendable security service bus and engine container suite system

The invention provides a security service system based on a dynamic extendable security service bus and an engine container suite system. The security service system based on the dynamic extendable security service bus and the engine container suite system uses an open data security service bus and an engine container and different data security functions, is inserted into an engine container in modularization mode, performs management on components and communications among the components through the security service bus, achieves dynamic customization security services which can be tailored according to a user environment, and provides a data security service which best fits a user to the user, wherein the engine container provides a running environment to a data security suite, the running environment comprises an access interface which comprises a bottom layer system source and has public functions, the security service bus provides dynamic perception for the data security suite, when ...

Nickel ferrite nano-fiber negative electrode material preparation method

The present invention discloses a nickel ferrite nano-fiber negative electrode material preparation method, and belongs to the technical field of nanometer materials and chemical power supplies. According to the present invention, polyvinylpyrrolidone is uniformly dissolved in ethanol, nickel acetate and iron nitrate are uniformly dissolved in N,N-dimethyl formamide, the obtained solutions are mixed and uniformly stirred to form a spinning solution, an electrostatic spinning technology is utilized to prepare a PVP/C4H6NiO4/Fe(NO3)3 composite nanometer fiber membrane, and then high temperature calcination is performed to obtain the nickel ferrite nano-fiber negative electrode material; the preparation method of the present invention has characteristics of simple preparation process, easy operation and low production cost; and the prepared material is used for the lithium-ion battery negative electrode material, has characteristics of excellent electrochemical property, high initial charge ...

Method for achieving electronic signatures between equal parties

The invention relates to a method for achieving electronic signatures between equal parties, and belongs to the field of data transmission safety. The method includes the steps that (1) users install a client processing program, (2) the local user manufactures a signature file, (3) a client processing program processes the signature file, (4) the signature file is sent to a remote user, (5) a remote client analyzes and verifies the signature file, (6) the remote client adds a signature on the signature file after the signature file is proved proper through verification, (7) the remote signature is sent to a local client, verified and is added to the signature file after the remote signature is proved proper through verification, and the two clients display the ultimate file to the corresponding users, (8) after signing is finished, communication is ended, and the file with one signature is destroyed. Complexity of two-way signing of existing clients is lowered, and the signatures and the ...

Security defending system for private data of mobile device

The invention relates to a security defending system for private data of a mobile device and belongs to the field of monitoring systems. The security defending system employs a client/server (C/S) framework, comprises a server software system and an application (APP) system of a mobile device terminal, and is characterized in that the server software system comprises a user management module, a platform management module, an interface management module, a statistic analysis module, a device security management module, and a security policy management module, and the APP system of the mobile device terminal comprises a device activation module, a device tracking module, a data security management module, a device safety module, a terminal management module, and a data encryption module. The security defending system for private data of the mobile device has the advantages that unified and centralized security management can be provided for the mobile device, and the problem of leakage of ...

Design method based on intranet data security protection engine

The invention provides a design method based on an intranet data security protection engine. A data file anti-leakage protection package and a multimedia digital right management package are deployed in the intranet data security protection engine, as a result, the multimedia content digital right management function in the intranet environment is achieved, and the effects of authorized accesses, piracy prevention and intellectual property protection of multimedia content are achieved. Through file circulation perception and file leakage perception, all-process tracing and positioning of electronic files are realized, and leakage prevention and unauthorized accesses of the electronic files are realized. In order to facilitate management and configuration of the security packages, dynamic loading management is conducted on all the safety packages in the engine through an intranet terminal security control package, and new security function units can be installed or uninstalled according ...

Ash discharge pipe cleaning tool

The invention discloses a novel ash discharge pipe cleaning tool which comprises a supporting unit, a cleaning unit, a cleaning unit, a cleaning unit and a control unit. The supporting unit comprises a fixing sleeve and a spine part arranged at the top end of the fixing sleeve; the ash discharging unit comprises an upper folding assembly arranged on the fixing sleeve, a lower folding assembly which is arranged on the fixing sleeve and is symmetrical to the upper folding assembly, a fixing part used for connecting the upper folding assembly and the lower folding assembly, and a lifting mechanism used for driving the upper folding assembly and the lower folding assembly to move; wherein the upper folding assembly and the lower folding assembly can be unfolded for ash discharge work. Through the arrangement of the ash discharging unit, the fixing sleeve can be wholly stretched into the ash pipe, then the upper folding assembly and the lower folding assembly are synchronously unfolded and approach ...

Partial connective radio network group relationship routing system and method