182results about How to "Meet practical requirements" patented technology

A P-contained flame-retarding ethanediol polyterephthalate / laminar silicate composition is prepared from dimethyl terephthalate (or terephthalic acid), ethanediol, laminar silicate, P-contained flame retardant, intercalator, dispersing medium and catalyst. Its advantages are high mechanical properties and refractory nature, and simple preparing process.

The invention relates to the technical field of speech signal processing, and discloses a singing evaluation method and system. The method comprises the following steps of: receiving a continuous speech signal of singing of a user; determining the boundary location of each note in the continuous speech signal so as to segment each note; selecting the tone model corresponding to each segmented note, and obtaining the tone model through training in an off-line mode in advance; extracting the tonal character of the note; according to the tonal character of the note and the tone model corresponding to the segmented note, calculating the standard of the note; and according to the standard of the note, determining a singing evaluation score. According to the method and the system, the objectivity and accuracy of note matching can be increased, and the evaluation performance of the singing evaluation system is increased.

The invention provides a portable raman spectrometer based on spectral analysis of a micro electro mechanical system. On the basis of the micro electro mechanical system, the portable raman spectrometer comprises a laser light source, a raman probe head and a spectrum detection system of a spectrograph, wherein the laser light source comprises a semiconductor laser which is used for generating lasers, the power of the generated lasers is not less than 200 milliwatts, and the line width of the generated lasers is not greater than 0.2 nanometers; the raman probe head comprises a laser outputting optical path and a raman scattered light collecting optical path which does not comprise a light filter for filtering rayleigh scattered light; and the spectrograph comprises the spectrum detection system which sequentially consists of a focusing lens I, a digital micromirror device (DMD) module I, a collimating lens, a chromatic dispersion optical grid, a focusing lens II, a digital micromirror device (DMD) module II, a de-chromatic dispersion optical grid, a focusing lens III, a single-point detector and a signal processor. The portable raman spectrometer has the advantages of being capable of keeping the resolution ratio of spectrum detection and improving the sensitivity of spectrum detection, being suitable for detection on weak signals such as raman signals, and the like.

The invention discloses a method for automatically extracting water body pollution information. The method comprises the following steps: (1) calculating water discharging reflectivity of a water area to be detected; (2) establishing a water quality remote sensing model; and (3) performing inversion with a water body spectral curve according to the water quality remote sensing model to obtain water quality parameters. A plurality of applicable tests on the method prove that the method has high precision and basically meets practical requirements. Images of test results can inverse spatial distribution situation of water quality in an area, and the distribution characteristics of the water pollution accord with the obtained information. Transboundary pollution situation is also reflected. Large and medium-sized pollution source situations can be reflected, such as pollution source position, pollution scale and range of influence range, thus providing quite useful information for controlling and treating pollution.

A vitamin E microcapsule preparation method belongs to the technical field of preparation of controlled-release microcapsule for food additives and bioactive substances. The vitamin E microcapsule preparation method can improve the stability of vitamin E and amplify the application range. The method comprises the following steps: selecting chitosan and maltodextrin as wall material, selecting soybean lecithin (P powder) and Tween-80 as the composite emulsifying agent; and synthesizing vitamin E microcapsule by spray drying. The vitamin E microcapsule has embedding rate up to 92.45%, retention rate up to 91.73%, and water content lower than 3%, and has wide application prospect in the fields of bread or snack products, beverages, biscuits, health products and nutrient fortified food, etc. The method has the advantage of low cost and simple process, can meet the environmental protection and practical requirement.

The invention discloses a sodium bismuth titanate based lead-free piezoelectric ceramic and a preparation process thereof. The general formula of the piezoelectric ceramic composition is (1-x)(Na0.5Bi0.5)1-aMaTiO3-xNaNbO3, wherein, x is the mol content of NaNbO3 in a ceramic system, a is the atom number of composite ions (Na0.5Bi0.5) which are replaced by M in (Na0.5Bi0.5)TiO3, x is not less than 0 but less than 0.3, a is more than 0 but less than 0.3, and M represents divalent alkaline earth metal elements Ba, Sr and Ca. As a secondary isostatic pressing forming method is adopted in the preparation process, the piezoelectric ceramic has the advantages of simple operation, high stability and low cost; and the method helps easily obtain high-density microcrystal ceramic materials, obviously improve the piezoelectric parameter and electromechanical coupling factor of the materials, and meet the practical requirement of the piezoelectric ceramic materials used in a micro-displacement actuator.

The invention relates to a method for preparing microencapsulation glucose oxidase, which belongs to the technical field of food processing. The invention aims at improving the quality of flour to researche a method for preparing new flour modifying agent, namely, the microencapsulation glucose oxidase, chitose-calcium alginate-glucose oxidase microcapsule which is obtained through the method is copolymer hydrogel which is obtained through double cross-linking, both amidogen and carboxyl group are fixed, and the whole system is a reticular formation. The method controls the catalytic speed of the microencapsulation glucose oxidase through adjusting the molecular weight and the degree of deacetylation of microcapsule exine chitose, thereby the method is beneficial for oxidation-linking of gluten protein and for increasing the quality of the flour and flour products, simultaneously, the glucose oxidase after microencapsulation avoids the contact between enzyme and the flour and improves storage and the stability, and the microencapsulation glucose oxidase is excellent flour modifying agent and accords with practical production and application. The process of the method is simple, safe and convenient, and accords with the requirements of environmental protection and utility.

A process for preparing the carbon coated ferrous lithium phosphate (LiFePO4 / C) used for the positive electrode of Li-ion battery includes such steps as proportionally mixing Li compound, P compound, 3-valence Fe compound, Nd compound and C compound, grinding, sintering in reductive atmosphere at 500-800 deg.C for 4-30 hr, and grinding.

The invention relates to a system for achieving leak application and communication safety detection of a smart mobile terminal, wherein the system comprises a protocol data packet capture module, a protocol conformance detection module, and a system leak detection module; the protocol data packet capture module is used for capturing and analyzing IPV4, IPV6 protocol data packets dispatched by the smart mobile terminal in real time; the system leak detection module is used for detecting leaks of an operation system and an application system of the smart mobile terminal. The invention also relates to a method for achieving leak application and communication safety detection of the smart mobile terminal. By adopting the system and the method for achieving leak application and communication safety detection of the smart mobile terminal with the structure, the functions of protocol data packet capture analysis, conformance detection, leak detection of the operation system and the application system, and the like can be achieved; main functions required for conventional safety detection of the smart mobile terminal are provided; the use safety of the smart mobile terminal is improved; the system has a wider application range.

The invention discloses a preparation method for a multi-core MgB2 / Fe / Cu superconducting wire. The preparation method comprises the following steps of: 1, preparing precursor powder; 2, filling the precursor powder into a pure iron tube, and placing the pure iron tube into a first oxygen-free copper tube to obtain a tubulated composite; 3, performing rotary forging and drawing treatment on the tubulated composite to obtain single-core wires; 4, placing a copper-niobium composite rod and six single-core wires into a second oxygen-free copper tube, performing secondary assembly to obtain a second composite rod, and performing rotary forging and drawing and grooving rolling treatment on the second composite rod to obtain a multi-core MgB2 / Fe / Cu wire; and 5, sealing the two ends of the wire, placing the sealed wire into a vacuum furnace, and performing vacuum sintering to obtain the multi-core MgB2 / Fe / Cu superconducting wire. The multi-core MgB2 / Fe / Cu superconducting wire has critical current density Jc reaching 1.8*10<4>A / cm<2> under 20 K and 1T, and a requirement for the practicability of the multi-core MgB2 / Fe / Cu superconducting wire is met.

The bacillus subtilis NX-2, or CGMCC NO.0833 is one bacillus spawn obtained through screening and is used for the production of gamma-polyglutamic acid and its salt as well as glutathione and its precursor. In optimized condition, gamma-polyglutamic acid may be accumulated to 30-50 g / L and produced in the production efficinecy of 0.8-2.5 g / L. When bacillus subtilis NX-2 is used in fermenting to produce gamma-glutamyl transpeptidase in optimized condition, the fermented liquid may reach enzyme activity of 1-5 U / ml; and the fermented liquid or separation obtained enzyme or the immobilized enzyme is used in the production of glutathione and its precursor with substrate dipeptide or dipeptide precursor converting rate of 30-80% being reached.

A thermosensitive Mn-Zn ferrite series is prepared from Fe2O3, ZnO, CuO and Mn3O4 through ball grinding for mixing, pre-calcining at 700-1100 deg.C, maintaining the temp for 1-4 hr, crushing, ball grinding, sieving, deposition, baking, adding polyvinyl alcohol solution and zinc stearate, stirring, die pressing and sintering at 90-1300 deg.C. Its advantage is excellent magnetic performance.

The invention provides a data processing method of an inductive type displacement sensor, for effectively reducing the calculation time complexity and the storage space complexity of a system. The method is accurate in data processing and is reliable and stable. The inductive type displacement sensor is composed of a sensing probe and a detection circuit. The sensing probe comprises a coil, and the detection circuit comprises a driving logic circuit, a switch tube Mn and a current-limiting resistor R which are connected with the coil to form a discharge loop, an analog-to-digital converter used for sampling, a driving circuit used for controlling the analog-to-digital converter to sample to obtain coil discharge waveforms, and a calculation circuit for obtaining an approach distance through calculating the discharge waveforms and outputting the approach distance. In the following content, an abbreviation IPS represents the inductive type displacement sensor, and ADC represents the analog-to-digital converter. The method comprises the following steps: 1, determining time constants of sampling of the ADC for two times; 2, establishing a high and low temperature search curve; 3, establishing a search table; and 4, the IPS calculating the approach distance in an online mode.

The invention discloses a multichannel image processing method for a curved compound eye imaging system and relates to the application fields of biologic clinical experiments, industrial machine vision, aerial surveillance in defense industries and the like. The image processing method aims at a distribution structure of curved surfaces of the curved compound eye imaging system and imaging features of multi-dimensional optical channels, the corresponding multichannel image processing method is provided by analyzing and researching the relation between a two-dimensional image collected by each sub-eye image collection channel and a curved three-dimensional space structure of the compound eye imaging system; the large-visual-field dead-zone-free detection of the curved compound eye imaging system is realized by utilizing techniques such as slicing, rotating and developing of the image; the image processed and obtained by utilizing the multichannel image processing method is high in definition and strong in visuality and meets practical requirements, and the application of the curved compound eye imaging system is further promoted by a research result.

The invention discloses a TMCP type marine austenitic stainless steel composite plate and a preparation method thereof and relates to the technical field of bimetal composite manufacture. The preparation method comprises blank preparation, surface grinding, isolating agent brush-coating, assembly blank sealing, electron beam soldering and sealing, heating, rolling and cooling, straightening, and cutting separation. The TMCP type marine austenitic stainless steel composite plate effectively solves the problem of corrosion resistance of the composite austenitic stainless steel in the composite plate, and in the blank preparation process, the steps of drilling and vacuuming are avoided. The preparation method has simple processes and a high rolling yield.

The invention relates to a supported gold-PGM alloy catalyst with stable storage property and a preparation method thereof. An active component is Au, an accessory ingredient is Pd or Pt in PGM, and a carrier is a Al2O3 composite oxide modified by Al2O3 or MIOx and MIIOx, wherein the atomic ratio of Au to PGM is 1.0:1.0-1.0:1.0*10<-2>; the atomic ratio of Au to MI+MII is 1.0:1.0-1.0:10; the atomic ratio of MI to MII is 2.0:1.0-0.2:1.0; the atomic ratio of Au to Al is 1.0:1.0*10<3>-1:0:10; MI is La; and MII is Fe, Co or Ni. The composite oxide carrier is prepared by an impregnation method or a coprecipitation method. After being supported with MIOx and MIIOx, Al2O3 is roasted at a temperature of between 800 and 1,000 DEG C to generate a spinelle or perovskite structure. The catalyst of the invention catalytically oxidizes micro CO (0.1 percent to 1.5 percent) in the air into CO2 at ambient temperature and in ambient humidity, and has the advantages of stable catalysis property, pressure drop meeting the requirements of a gas mask and a mining self-rescuer and low cost.

A lead-free piezoelectric sodium bismuth titanate-potassium bismuth titanate texture ceramics is prepared from the microcrystalline template (bismuth titanate) prepared from TiO2, bismuth oxide, sodium chloride and potassium chloride, the raw powder of sodium carbonate, potassium carbonate, TiO2 and bismuth oxide, organic solvent, and adhesive through mixing, ball grinding, doctor blading, laminating, isostatic pressing in hot water, cutting pre-calcining, and coating Ag.

The invention discloses a preparation method of a multi-core MgB2 superconducting wire. The method comprises: first, precursor power is prepared; second, the precursor power is placed in a Ta tube to prepare a tubulation complex; third, groove rolling is carried out on a single core wire; fourth, a NbTi / Cu composite rod and a plurality of single core wires are placed in an oxygen-free copper tubefor assembling so as to obtain a secondary composite rod; fifth, rotary swaging and drawing are carried out on the secondary composite rod, groove rolling is carried out and rotary swaging and drawing are carried out again, so that a multi-core wire is obtained; and sixth, heat treatment is carried out on the multi-core wire to obtain a multi-core MgB2 superconducting wire. According to the invention, processes of rotary swaging, drawing and groove rolling are combined and employed; therefore, not only is density of the multi-core wire improved, but also connectivity between crystal grains can be improved; it is beneficial to prepare a multi-core MgB2 superconducting wire with high performances; and the prepared wire has high mechanical strength and can bear great stress and strain without obvious reduction of the superconductive current carrying performance, so that a superconducting wire practical requirement can be well met.

The invention discloses a method for manufacturing a composite Nb3Al / Nb multi-core superconducting wire. The method comprises the following steps of: weighting Nb foil and Al foil based on a stoichiometric ratio of the Nb3Al; superposing the Nb foil and the Al foil and winding the Nb foil and the Al foil around a Nb rod, placing the Nb rod into a Nb tube, and drawing the Nb tube to a thin line of0.8-1mm to obtain a single-core wire; orderly placing the sections of the single-core wire into the Nb tube after cutting off the single-core wire to be multiple equal-length sections, and placing anequal-length Nb rod on the central axial line of the Nb tube; drawing and rolling the Nb tube to a circular or flat wire with the diameter of 1-2.5mm to obtain a multi-core wire; and cutting off the multi-core wire to short wires of 10cm, and carrying out a high-temperature treatment of 1900-2100 DEG C on the short wires for 0.05-0.2s by utilizing a pulse electric power under a vacuum condition to obtain the composite Nb3Al / Nb multi-core superconducting wires. The method disclosed by the invention has the advantages of short manufacturing period and high efficiency; in addition, the compositeNb3Al / Nb multi-core superconducting wire manufactured by the method has the advantages of compact connection, good uniformity, no separation situation, no impurity phase, and excellent superconducting performance.

The invention discloses a rear cantilever type simple parking device lifting through chains. The device comprises components as follows: lifting motors, lifting motor gears, driving shafts, chain baffles, transmission chains, lifting chains, traverse motors, standing column assemblies, beam assemblies, lifting frame assemblies, second layer car carrying board assemblies, first layer car carrying board assemblies, diagonal draw steel bars, diagonal draw steel bar folding guiding plates, lifting frame guiding shafts, rollers and the like. The rear cantilever type simple parking device achieving lifting through chains enables second layer car carrying boards to be lifted safely and stably and achieves the anti-falling function of the car carrying boards at the position of the second layer; accurate positioning and lateral moving of the rear cantilever type simple parking device at the first layer is achieved, and slipping and car sliding are prevented; the safety and the reliability of the rear cantilever type parking device are improved; and the requirements of small size, simplicity and practicality for mechanical parking devices are met.

The invention discloses an electrified cleaning insulating maintenance robot device for high-voltage power equipment. The electrified cleaning insulating maintenance robot device comprises a traveling mechanism, a lifting mechanism and a cleaning insulating maintenance mechanical arm. The lifting mechanism comprises a motor linkage driving circuit, a motor, a balance monitoring device and two or more pneumatic insulating lifting rods. The motor linkage driving circuit is in signal connection with the motor. The balance monitoring device is in signal connection with the motor linkage driving circuit. The pneumatic insulating lifting rods are made of epoxy resin or glass fiber steel and installed on the traveling mechanism. The cleaning insulating maintenance mechanical arm is arranged on the lifting mechanism. According to the electrified cleaning insulating maintenance robot device for the high-voltage power equipment, the supporting stability is improved, the driving force of the lifting mechanism is reduced, and the phenomenon of creepage short circuits is effectively avoided; the degree of balance of the lifting mechanism can be adjusted automatically, the probability of tilting and turning is lowered, and the safety performance is improved.

A bidirectional stress tuner of optical fibre raster for tuning peak wavelength of optical fibre raster is composed of the first and the second horizontal arms for fixing the optical fibres at both end of raster to them, and guide track with normal triangular internal cavity for containing said raster in it. Said two horizontal arms are electromagnetically coupled to drive mechanism to move closeto or far from each other, so compressing or stretching the raster. Its advantages include uniform stress, no deformation, no increasement of reflection bandwidth, and better turning renaturation.

The invention relates to an intelligent-regulation automobile car damper based on a single chip microcomputer. When a car frame or a car body and a car axle are vibrated to have relative movement, a piston in the damper moves up and down, so that an oil fluid in a damper cavity repeatedly flows into another cavity from one cavity through different pores. Damping force is formed on vibration by virtue of friction between pore walls and the oil fluid and internal friction among oil liquid molecules, so that the car vibration energy is converted into oil fluid heat energy which is adsorbed by the damper and then diffused into atmosphere. According to the intelligent-regulation automobile car damper, by improving the structure of the damper of a current car suspension system, the damper can regulate chassis height according to practical needs of a driver; and meanwhile, oil consumption is not added, the comfort of the original car is kept, and the operation stability and the safety are improved. Bad roads such as an earth road, high and low pits and the like can be leisurely coped, by-pass trouble caused by water ambulation is also avoided, and practical requirements, in a using process, of a car owner can be effectively satisfied.

The invention relates to an ultraviolet light-cured hydrophilic coating and a preparation method thereof. The method comprises the steps of mixing hydrophilic unsaturated polyester-urea amide, acrylic ester crosslinking monomers and an initiator according to a certain ratio; adding a proper amount of auxiliary agents and a diluent; stirring at a temperature of 25 DEG C, and thus the brownish black ultraviolet light-cured hydrophilic coating having a certain viscosity is obtained. The ultraviolet light-cured hydrophilic coating employs ultraviolet light to cure for film formation, has the characteristics of high efficiency, energy conservation and good hydrophilicity. The ultraviolet light-cured hydrophilic coating is expected to be used for hydrophilic coating of hydrophilic aluminium foil, plastic, glass, and the like, and provides excellent hydrophilic performance for the above.

A Tm3+ / Yb3+ codoped oxyfluorotellurate glass with high up-conversion power to strong blue light is prepared by fusion method. It contains TeO2, B2O3, PbF2, WO3, ZnF2, Tm2O3 and Yb2O3 proportionally. Its advantages are high transparency, excellent physical and chemical properties, and strong blue light converting power.

The invention provides a preparation method for tussah silk glutin powder. The preparation method comprises the followings steps: firstly, based on slightly-soluble sericin liquor as a raw material, hydrolyzing the slightly-soluble sericin liquor by a double-enzyme combination process of neutral protease and trypsin; then, extracting and reccovering sericin by adopting an ultrafiltration membrane assembly and a process method, and decolorizing sericin hydrolysate by using a H2O2 decoloration process; and finally, concentrating the ericin hydrolysate by adopting a double-effect film-falling evaporating dish, and drying by adopting a centrifugal spray dryer to obtain light-yellow soluble glutin powder.

The invention discloses a method for constructing a distributed dynamic power flow computing system for energy management of an electric power system, belonging to the technical field of energy management of electric power systems. The method comprises the following steps of: setting a distributed computing coordination layer in a superior scheduling center, and setting a distributed computing subsystem in an inferior scheduling center. The system comprises three modules, i.e., a network communication module, a system management module and a computing management module, wherein the network communication module is realized by adopting a relatively mature CORBA (Common Object Request Broker Architecture) technology in the distributed field and meets the requirement of a coordinating layer and a subsystem on data exchange; the free entrance or exit of a subsystem is realized by the system management module; the subsystem can be used for controlling the allocation and the release of the internal memory of the coordination layer to solve the problem of starting of power flow computation; and the computing management module is used for realizing procedure management of power flow computation and solving the problem of transmission of link line boundary information during data exchange by forming a node mapping table of a link line local node number and a coordination layer node number. The method meets the requirement of practicability.

The invention relates to a stone mosaic map, a method for manufacturing the same and a method for mounting the same. The map consists of a map base plate and map symbols. The map processed by the method has a flat plate shape with even thickness, each map plate is processed from stones with different grains or colors by a water jet cutting method, the map plates in adjacent different map areas are processed from the stones with different grains and colors, the map plates form the map base plate by splicing and adhering; the map base plate is printed or carved with various map symbols after polishing; coastal continental plates are provided with a carved sea-land transitional area groove which is filled with a caking agent with similar colors and grains with oceanic plates; and the map surface of the map and the surface of a mounting site are positioned on the same plane when the map is mounted. The map can be mounted on the wall surface or a table top, in particular on the floor, and has the advantages of the practicability of a map, the ornamental of a stone mosaic medallion, and the building material functions of wall bricks, table tops and floors.