181results about How to "Avoid demanding" patented technology

The invention relates to a layer-by-layer self-assembling oxidized graphene nano-filtration membrane and a preparation method of the layer-by-layer self-assembling oxidized graphene nano-filtration membrane, which belongs to the technical field of the preparation of a nano-filtration membrane. The layer-by-layer self-assembling oxidized graphene nano-filtration membrane comprises a supporting layer and a functional layer, wherein the functional layer is in a layered structure which is different from the compact structure of the traditional nano-filtration membrane functional layer. The preparation method comprises the following steps of (I) preparing an oxidized graphene solution through a hummers method; and (II) preparing an oxidized graphne nano-filtration membrane through a layer-by-layer self-assembling method. The oxidized graphene nano-filtration membrane is prepared through the layer-by-layer self-assembling method, a water passage is formed between the oxidized graphene lamellas, the distance of the oxidized graphene layer has a good interception effect for ions, the hydrophilia can be improved through the oxygen-containing functional groups on the surface of the oxidized graphene layer, so that the membrane is good in permeability and interception property. By utilizing the layer-by-layer self-assembling method, the high requirement of the traditional nano-filtration membrane preparation process on the condition can be avoided, the process is simple, the condition is easily controlled, and the application prospect is wide.

The invention discloses a cutting-stirring friction welding composite processing device for a floating double-shaft-shoulder double-stirring needle and a manufacture method thereof, and particularly relates to a combined or composite processing device capable of simultaneously carrying out milling or cutting processing and stirring friction welding processing and a method thereof. The cutting-stirring friction welding composite processing device for the floating double-shaft-shoulder double-stirring needle integrates a cutting system or a milling system, a stirring friction welding system, a forced cooling system, a gas protection system, a temperature sensing system, a pressure induction system, a milling liquid supply system and a sensing-free system. The cutting-stirring friction welding composite processing device has functions of temperature control, gas protection, pressure detection, cooling liquid protection, milling head replacing and floating double-shaft-shoulder self-supporting stirring friction welding. The method for carrying out cutting-stirring friction welding composite processing on workpieces can meet strength requirements of mechanical processing of ferrous light metal materials, carbon steel materials and alloy steel materials. The cutting-stirring friction welding composite processing device for a floating double-shaft-shoulder double-stirring needle and the manufacture method of the cutting-stirring friction welding composite processing device reduce manufacture procedures, save processing cost, have the advantages of being high in efficiency, excellent in quality, high in stability and saving in energy, break through limitation of conventional machining technology, form a new method and a new thought for machinery processing, and have wide application prospects in industries of heating, air conditioners, ice manufacture, freshness keeping, medicine preparation, construction, aquatic products and foods.

The invention relates to an aerial seamless virtual roaming system constructing method. The aerial seamless virtual roaming system constructing method comprises the following steps of aerial photography sampling point arrangement, aerial photography image acquisition, sequence panoramic image generation, aerial panoramic image demarcation, ground scene expression, navigation route specification, scene rendering and seamless roaming. According to the aerial seamless virtual roaming system constructing method, an image-based rendering technique is adopted, and therefore, rigorous requirements of a huge amount of data in 3D reconstruction, for system hardware, can be avoided; sampling points of aerial panoramic photography are reasonably arranged, and therefore, it can be ensured that as many ground scenes as possible can be obtained with as less sampling data as possible adopted, and therefore, seamless immersive virtual roaming of navigation routes can be specified arbitrarily without constraints.

The invention discloses a novel process for the on-line removing of scale at the surface of a hot-rolled copper plate belt, which is a process for scraping, brushing and purging scale at the surface of a blank ingot during hot rolling. The process comprises the following steps: scraping and brushing the scale on the upper surface or the lower surface of a rolled piece (3) by a scraping and brushing roller at the inlet side and the outlet side of a working roller, scraping off the scale which already turns up because of hot rolling, and avoiding pressing into the inside of the rolled piece during rolling; the process can solve the long-term puzzling problem of the pressing-in of the scale in the hot-rolling process of a copper plate belt, can be used for common hot-rolling materials, also can be used for hot-rolling quenching materials, can lower the energy consumption and the cost, can improve the labour production conditions of workers and can better produce a blank used for a cold-rolling copper plate belt with no scale pressed into the surface.

The invention discloses a method for achieving panorama multi-point roaming. The method for achieving panorama multi-point roaming includes the following specific steps that S1, a roaming path is drawn; S2, a panorama is rendered; S3, coordinates are acquired; S4, a panorama file is generated; S5, spatial point positions are acquired; S6, a multi-point path is drawn. The cubic panorama is selectedas a research object, as the cubic panorama is simple in structure, image storage and compression are promoted, the method is more suitable for multi-space free switching, virtual roaming of the freely-designated roaming path among the panorama is promoted, seamless multi-scene immersive experience is achieved, in actual three-dimensional roaming scene expression, switching of multiple scenes isconverted into virtualized drawing operation, different user-defined roaming path strategies are adopted for different roaming scenes, and high-quality virtual panorama roaming drawing is achieved.

The invention relates to a method for judging change of a differential protection route according to change of unidirectional transmission delay. The time delay of protective devices at the two ends of a circuit is calculated to obtain unidirectional time delay so as to judge the change of a transceiving route; and a triggering device performs resampling and synchronization adjustment. Through the method, the change of a bidirectional route is judged by only partially modifying software without adding hardware equipment, so that the harsh requirement of a differential protective device on the consistency of bidirectional time delay is met and differential protection has wider application.

The invention discloses an anti-pollution composite graphene oxide nanofiltration membrane. The anti-pollution composite graphene oxide nanofiltration membrane comprises a base membrane and a graphene oxide membrane used as a separation layer, the base membrane is covered with the graphene oxide membrane, and the graphene oxide membrane is covered with a cross-linking membrane for protecting the graphene oxide membrane, wherein the cross-linking membrane is obtained through cross-linking polyvinyl alcohol and a cross-linking agent, the cross-linking agent is dialdehyde or maleic anhydride, and the cross-linking membrane has a porous structure. The invention also discloses a method for producing the anti-pollution composite graphene oxide nanofiltration membrane. The production method comprises the production of a cross-linking layer. The method is simple to operate and is easy to implement.

The invention discloses cutting-stirring friction-welding combined machining equipment and a manufacturing method thereof. The cutting-stirring friction-welding combined machining equipment integrates a milling system or a cutting system, a stirring friction-welding system, a forced cooling system, a gas protection system, a temperature sensing system, a pressure sensing system, a milling liquid supply system and a non-sensing system. The invention provides a united or combined machining device which can carry out milling or cutting and stirring friction-welding in parallel simultaneously and a method thereof. The cutting-stirring friction-welding combined machining equipment has the functions of temperature control, gas protection, pressure detection, cooling liquid production, milling head replacement and dual-shaft shoulder self-supporting. According to the manufacturing method of the cutting-stirring friction-welding combined machining equipment, the manufacturing processes are reduced and the machining cost is saved. The limitation of the conventional mechanical machining technology is broken through, and a new method and a new idea about the mechanical manufacturing and machining are formed. The cutting-stirring friction-welding combined machining equipment and the manufacturing method in the invention have wide engineering applications to the heating industry, the air conditioning industry, the ice making industry, the freshness retaining industry, the pharmacy industry, the construction industry, the aquatic product industry and the food industry.

The invention discloses a method for extracting aluminum oxide from coal gangue, which comprises the following steps of: mixing and grinding the broken coal gangue and sodium carbonate in a certain ratio, roasting, performing circular extraction, precipitating, filtering, decomposing carbon, recycling carbon dioxide and an auxiliary agent, washing, calcining and the like to extract high-purity aluminum oxide from fly ash. Compared with other methods for extracting aluminum hydroxide from the fly ash, the method has the advantages that: the extraction ratio of the aluminum hydroxide is high, residues are a few, energy consumption is low, the process is simple, cost is low, the generated CO2 and the used auxiliary agent raw material can be recycled, and the like; and the problems of a complicated technology and high cost of the conventional process for extracting the aluminum hydroxide from the fly ash are solved, and a new way is opened up for the high-added value development and utilization of the coal gangue.

The invention discloses an HTTP (hyper text transport protocol)-based large file page breakpoint resuming method and an HTTP-based large file page breakpoint resuming system. The system comprises a web browser, a file index server, a file transfer storage server and a large file uploading plug-in, wherein the web browser is based on an HTTP and is taken as a carrier of the large file uploading plug-in; the file index server is used for storing the transfer index value of a file to be uploaded; the file transfer storage server is used for storing the successfully uploaded file block information of the file to be uploaded; the large file uploading plug-in is used for sending an HTTP request into the file index server and inquiring whether the file with the transfer index value is stored in the file transfer storage server or not; the successfully uploaded file block information is acquired from the file transfer storage server; the uploading thread is acquired and established. The method and the system mainly solve the problem of large file uploading performance of the web browser, the progress and the speed of file uploading can be displayed in a friendly interface in real time, and suspension, cancel and recovery of multiple uploading tasks can be conveniently and rapidly controlled.

The invention provides an information publish device of production line equipment controlled by a programmable logic controller (PLC) based on a hypertext markup language (HTML). The device provided by the invention is characterized in that a central processing unit (CPU) is adopted as control part; the CPU is connected with a memorizer; the CPU is connected with a computer network interface; the CPU is connected with the physical interface of the PLC for the production line equipment; the memorizer comprises a network interface zone and a user zone; the network interface zone comprises a communication protocol and a memory mapping list, a transmission control protocol/internet protocol (TCP/IP) module and system software, wherein the communication protocol and the memory mapping list access to the PLC of the production line equipment; and the user zone comprises an HTML code module, an access authority list and a PLC communication parameter module. An HTML webpage is adopted to store a man-machine interaction interface containing PLC data, so that a computer in networks can perform access so as to realize human-machine interaction by means of webpage operations. Based on the communication protocol of the PLC and the memory data structure of the PLC, the system software calls subfunctions in accordance with the memory mapping list so as to obtain or modify the memory data of the PLC, and results are stored in the mapping list. The corresponding data in the memory mapping list is embedded into a webpage which is complied by means of HTML codes so as to form an integrated human-machine interaction interface.

The invention discloses a method for controlling a double-shaft parallel hybrid power urban bus. The method comprises the following steps that a power transmission system model is set up; linear fitting is carried out; the reachable area of a state of charge (SOC) is pre-determined; a prediction control model is set up; a hybrid integral linear programming problem is solved. According to division of the work modes and the dynamic characteristic of hybrid logic, the work modes of the hybrid power bus can be freely switched according to running conditions and the behavior of a driver, and therefore torque is distributed to an engine and a motor through an optimal method. The problem that due to a control method based on rules, torque distribution cannot be automatically optimized according to the running conditions is effectively solved. The defect that only the current moment can be considered in instantaneous optimization is effectively overcome through the prediction model. When the range of visibility is predicted, duration enabling the relative error of the prediction result and an ideal value to be small can be found according to experiments, and the strict requirement for the whole running conditions in global optimization is effectively eliminated.

The invention discloses a Raman spectrum accurate quantitative analysis method of a powder mixture, which includes the following main steps: 1 collecting Raman spectrum data Ica1 of k correction samples, 2 adopting a model to describe the Raman spectral intensity 1k (v) of the kth sample at the position of Raman displacement v and the relationship between mass percents wk and j of J chemical components in the sample, 3 utilizing Ica1 and the content vector wj of the target chemical components of a correction sample set to estimate the multiplier effect vector q of the correction sample set, 4 respectivley establishing a linear correction model between Ica1 and diag (wj) q and between Ica1 and q, and 5 accurately predicting the content of the to-be-detected component from Raman spectrum Itest of an unknown to-be-detected sample by utilizing the established double-correction model. The Raman spectrum accurate quantitative analysis method of the powder mixture resolves the common problem that degree of accuracy of quantitative analysis results of powder samples is poor by the adoption of the Raman spectrum technique and makes it possible to achieve accurate quantitative analysis for a powder mixture system by the adoption of the Raman spectrum technique.

The invention discloses a method and a system for connecting an android system by a PC (personal computer) browser. The method comprises the following steps: S1) installing PC client side software in a PC; S2) comprising a local HTTP (hyper text transport protocol) service module in the PC client side software, and opening a local HTTP service port by the local HTTP service module; S3) when the PC browser needs to be communicated with the local android equipment in the process of browsing a certain website and accessing a remote HTTP service port, carrying out cross-domain access to the local HTTP service port; S4) carrying out both-way communication between the PC browser and the PC client side software, and realizing the operation to the local android equipment by the user in the PC browser. According to the method and the system for connecting the android system by the browser, which are disclosed by the invention, the optimal user experience is kept, the harsh requirement on the operation environment is avoided, the method and the system conform to the intuition and the use habit of a user, and therefore a user can conveniently install an APK (android package) file on a mobile phone, and can carry out more deep operations on the mobile phone.

The invention discloses a high-precision gear centering and clamping device based on inner hole centering and a machining method of the high-precision gear centering and clamping device. The high-precision gear centering and clamping device comprises a hydraulic module used for driving the whole device, and an expansion sleeve centering and clamping module used for clamping a gear. The expansion sleeve centering and clamping module is arranged at the upper end of the hydraulic module and comprises a frustum base and an elastic expansion sleeve matched with the frustum base. The elastic expansion sleeve is movably arranged on the frustum base in a sleeving manner and driven by the hydraulic module to axially move. The axial movement of the elastic expansion sleeve relative to the frustum base can be converted into radial deformation of the elastic expansion sleeve, and therefore the to-be-machined gear can be centered and clamped. Rapid self-centering of a gear inner hole and gear clamping can be easily finished, and the positioning precision and the production efficiency are improved. The device and the method are suitable for various gear grinding machining processes in which gears are aligned through inner holes, and the using effect is particularly obvious for high-precision gears produced on a large scale.

The invention discloses a preparation method of lithium hexafluorophate, which is characterized in that the preparation method comprises the following steps of respectively dissolving dry hexafluorophosphate and dry lithium chloride into an organic solvent according to a molar ratio of 0.5-3.5:1 and preparing into solution with a concentration of 10-40 percent; adding the organic solvent and the solution into a reaction kettle with an agitator, a thermometer and a reflux condenser, reacting for 2-8 hours at a temperature of 0-40 DEG C under the inert atmosphere and the constant-pressure environment; filtering feed liquid under the inert atmosphere, removing undissolved substances, carrying out pressure reduction and evaporation on the solution at a temperature of 20-100 DEG C, removing a part of solvents, cooling and crystallizing at a temperature of 30 below zero-10 DEG C, filtering and recovering mother liquor to obtain a lithium hexafluorophate monomer or a complex of the lithium hexafluorophate monomer with the solvent; and re-crystallizing and vacuum-drying to obtain obtaining the lithium hexafluorophate with a purity of 99.92-99.97 percent.

The invention discloses a book recommendation method based on a sequence pattern. The method comprises the following steps of: sequencing various records in a library borrowing database by taking a library card number as a primary key and borrowing time as a secondary key and transforming the records into a sequence database consisting of borrowing sequence data; solving a large book set of a frequent sequence pattern comprising only one book set in the sequence database, and mapping the large book set to be a group of adjacent integers; replacing various borrowing sequence data in the sequence database by the large book set contained in the sequence data; excavating a frequent sequence pattern set by using the large book set; finally finding out the maximum frequent sequence pattern set in the frequent sequence pattern set to construct a reader borrowing behavior library. Therefore, the reader borrowing behaviors in the library borrowing database can be discovered effectively, and the relevant books can be recommended to readers.

The invention discloses a method for extracting alumina from bauxite, which is suitable for extracting the alumina from various and different ore mineral types of bauxites. The method comprises the following steps: mixing and grinding the crushed bauxite and sodium carbonate according to a certain proportion, and then obtaining high-purity alumina through roasting, circular leaching, sedimentation-filtration, carbonization, additive recycling, washing, calcinations and the like. In the whole production process, the generated carbon dioxide and the used additive can be recovered and reused. Compared with the Bayer process and other methods for producing the alumina, the method has the advantages of low requirement on the grade of the alumina from the bauxite, low requirement on the aluminum-silicate (A/S) ratio, no limitation to the type of minerals, high extraction rate of the alumina, low energy consumption, more succinct process, no special requirements on the equipment, lower cost and the like, thereby easily realizing industrialization.

The invention provides an attitude control test device for a six-degree-of-freedom unmanned aerial vehicle. The attitude control test device comprises a base, a frame, a three-degree-of-freedom joint, a first rotating device, a first revolute pair, a second rotating device, a second revolute pair, a mounting module, a third revolute pair and an unmanned aerial vehicle module, wherein the base is fixed on the ground or a work surface; the frame is connected with the base through the three-degree-of-freedom joint; the first rotating device is connected with the frame through the first revolute pair; the connection between the second rotating device and the first rotating device is realized through the second revolute pair; the mounting module is connected with the second rotating device through the third revolute pair; the unmanned aerial vehicle module is mounted on the mounting module; through the connection manner, the unmanned aerial vehicle module can make six-degree-of-freedom spatial motion. The attitude control test device disclosed by the invention occupies very small space, and the unmanned aerial vehicle can be debugged indoors, so that the complex process of outdoor debugging is avoided, and unsafe factors generated during debugging to crowds and the unmanned aerial vehicle are avoided.

The invention discloses a preparation method of synthetic graphene, belonging to the field of preparation of graphene. The preparation method comprises the following steps: synthesizing a Fe<3+>-supported smectite catalyst; respectively putting the Fe<3+>-smectite catalyst and a benzene solution in two crucibles, and putting the two crucibles in a high-pressure reaction kettle; and washing the reacted sample with hydrofluoric acid and nitric acid under ultrasonic conditions to remove the smectite framework, and carrying out freeze-drying to obtain the graphene black powder. The iron-ion-supported smectite catalyzes the dehydrogenation of benzene to synthesize the graphene at 250 DEG C in the high-pressure kettle, and no carrier gas is needed in the reaction process; and the method has the advantages of no requirements for catalyst surface, low reaction temperature and low reaction cost, and has certain application prospects.

The invention relates to a method for rapidly preparing a transition metal chalcogenide composite optical fiber material. The preparation method comprises the following steps: infiltrating the opticalfiber by adopting molybdic acid or sodium tungstate/potassium salt solution, and then directly depositing high-quality single-layer or few-layer transition metal chalcogenide on the inner wall of anair duct in the center of the optical fiber or on the inner walls of a cladding air hole and a fiber core air duct of the photonic crystal fiber under the conditions of low pressure and high temperature. The optical fiber is made of quartz or quartz polymer. The excellent optical and electrical properties of the transition metal chalcogenide composite and the characteristics of the photonic structure of the optical fiber are combined to realize the multifunctional integration of the two-dimensional TMDC material and the optical fiber. The method has the characteristics of low cost, simple preparation method, short growth period and controllable layer number of the transition metal chalcogenide. The prepared transition metal chalcogenide composite optical fiber has potential application inthe fields of optical communication, sensing and novel optical devices.

The invention relates to a horizontal flat plate plasma indoor air purifying device, comprising a plurality of vertical flat plates which are parallel to each other and evenly spaced; wherein, a plurality of discharge electrode bars are distributed among the flat plates; the surface of the discharge electrode bars is evenly provided with a plurality of discharge pricks; the vertical flat plates are electrically connected with a power ground of a high-frequency power supply; the discharge bars are electrically connected with an output end of the high-frequency power supply; an earthing electrode and a discharge electrode are arranged together by an insulated bracket; the earthing electrode can be made by a metal plate on which through holes are arranged; the discharge pricks are welded on the discharge bars; the discharge pricks can be in the shape of pyramid or cone or sawtooth, and are distributed by layers on the discharge electrodes; 3-6 discharge pricks are arranged in the same layer and the directions of the discharge pricks in adjacent layers are staggered. The invention features relatively simple structure, good ionization effect, the capacity of realizing relatively high purification effect, thus being mainly applied to purification of indoor air.