632results about How to "Adjust density" patented technology

The present invention discloses a method for encrypting the file in the digital medium playing system and the encrypted file structure thereof, wherein, the method comprises the following procedures: (1) dividing the file to a plurality of segments according to the format character of the file; (2) encrypting the segment content which needs to be encrypted; (3) including paragraph identifier in each segment; and (4) forming all the key values correlative to the file to a key list which is used for transmitting to the subscriber. The encrypted file structure comprises a medium file which is composed of a plurality of segments and a key list that is composed of a plurality of key index values and the corresponding keys. Each segment comprises medium content and the segment length field which is used for indicating the total length of this segment of data. The invention possesses the advantage that the functions of speeding, quickly returning, jumping broadcasting and the like are realized and the security of the encrypted file is increased.

The invention relates to a room-temperature terahertz wave detector which uses a transistor with high electron mobility as a basic structure and comprises an antenna capable of efficiently coupling with terahertz waves, wherein the antenna and the transistor with high electron mobility are integrally arranged, but the antenna is mutually independent from the source electrode and drain electrode of the transistor with high electron mobility; a pair of butterfly antennae are connected between the source electrode and the drain electrode so as to generate a crosswise terahertz electric field in an electron channel; and one butterfly antenna is connected to the drain electrode of the transistor with high electron mobility so as to generate a lengthways terahertz electric field in the electron channel. By utilizing the detector provided by the invention, the regulation and control carried out on the two-dimensional plasma wave by the grid electrode of the transistor with high electron mobility can be effectively enhanced, and the terahertz wave can be detected with high speed, high efficiency, high sensitivity and low noise; simultaneously, under the working condition of room temperature, the application scope of terahertz wave can be obviously widened, and the application cost can be lowered; and, the room-temperature terahertz wave detector can be manufactured by using a semiconductor micro-processing technique with minimized device structure and high integrated level.

The invention provides a semi-solid lithium flow battery reactor. The semi-solid lithium flow battery reactor comprises a battery frame and an electrode cavity. The battery frame is a cuboid with the hollow interior. The electrode cavity comprises an anode cavity and a cathode cavity. The electrode cavity is filled with continuously or intermittently flowed electrode suspension liquid. A straight-through insulation cavity is installed between the anode cavity and the cathode cavity. The height of the insulation cavity is 0.1-1 mm, and the interior is filled with intermittently flowed electrolyte. The invention further provides an electrolyte circulating system based on the battery reactor and a working method. Through the pressure of the electrolyte in the insulation cavity to a porous current collector is regulated by the electrolyte circulating system, the situation of the battery micro-short or polarization increase can be solved, the battery polarization can be effectively reduced, and the battery safety is improved.

The invention discloses a catalytic cracking fluidized bed catalyst synthesized in situ, which is mainly used for solving the technical problems of low naphtha conversion rate and low yields of ethylene and propylene when the conventional fluidized bed catalyst is used for catalyzing cracking of naphtha for preparing ethylene and propylene. The catalyst comprises the following components in parts by weight: (1) 0.5-15.0 parts of at least one selected from phosphorus, rare-earth or alkali-earth element oxide and (2) 85.0-99.5 parts of catalyst selected from microspheres which are synthesized in situ and contain a ZSM-5 molecular screen and of which the particle sizes are 10-200 mum. Due to the adoption of the technical scheme, the problems are well solved; and the catalyst can be applied to industrial production of preparation of the ethylene and the propylene by the catalytic cracking of the naphtha.

When an etchant that alone can etch a multilayer film comprising a copper layer and a molybdenum layer is used during mass production, it is important for the cross-sectional shape of an edge after etching to satisfy the shape requirement of having a forward taper without an undercut, and that no precipitate be formed in the etchant. A multilayer-film etchant containing a copper layer and a molybdenum layer contains hydrogen peroxide, an inorganic acid, an acidic organic acid, a neutral organic acid, an amine compound, and a hydrogen peroxide decomposition inhibitor, but not an azole compound, and therefore no reaction products are generated from a reaction with the hydrogen peroxide, and no precipitates form in the etchant. Furthermore, the cross-sectional shape of the edge after etching can be formed into a desirable forward tapering shape. Containing no phosphorus compounds or fluorine compounds, the etchant will case minimal damage to the environment when disposed.

The invention discloses a road cement concrete flowing water washout tester and a use method thereof. The road cement concrete flowing water washout tester comprises a motor, a speed adjuster and a base, wherein a washout cylinder is arranged on the base; a concrete test piece is arranged at the bottom inside the washout cylinder; a washout plate component is arranged on the top of the concrete test piece; the output shaft of the motor is connected with a piston through the speed adjuster; the piston comprises a pull rod and a pressure plate connected with the pull rod; the cavity between the washout plate component and the top of the washout cylinder is divided into a cavity A and a cavity B by the pressure plate; a flowing water circulation pipeline is arranged on one side of a washout bucket; the water inlet of the flowing water circulation pipeline is communicated with the cavity B; the water outlet of the flowing water circulation pipeline is communicated with the cavity A. Due to the hollow structure, the shapes of patterns of a tire can be actually simulated, so that the washout plate has the load effect on the concrete test piece, and the load effect of the tire to a pavement structure can be simulated. The road cement concrete flowing water washout tester is simple in structure, convenient to use, and capable of simulating the washout testing on the bottom and the top of a concrete pavement plate.

A controlling and releasing composite fertilizer nutrient releasing model and production are disclosed. The production is carried out by potassium chloride reacting with phosphoric acid and concentrated sulfuric acid, recovering hydrogen chloride, two products reacting, adding urine to obtain mixed slurry of potassium sulfate and urea phosphate, adding stabilizer and flowing-performance improver, reacting with urea to obtain ammonium phosphate mixing melt in melting boiler, regulating NPK proportion, adding functional additive, combing releasing mechanism with instant releasing, frame slow releasing and surface controllable releasing, granulating, coating, computing fertilizer proportion, and obtaining controllable releasing composite fertilizer. Its advantages include low cost, regulating releasing period and no environmental pollution.

The invention provides a lithium double-fluid flow battery, which comprises a porous positive current collector, a positive reaction cavity, a diaphragm, a metal lithium negative plate, a negative reaction cavity, a positive suspension and a negative electrolyte, wherein a gap with a certain distance exists between the diaphragm of the battery and negative metal lithium; the gap is fully filled with the negative electrolyte which continuously or intermittently flows; and a solid-liquid composite dual-diaphragm structure is formed by the diaphragm and the negative electrolyte. Through continuous or intermittent washing by the electrolyte, the problem of potential safety hazards caused by lithium dendrites generated by a metal lithium negative electrode in charge-discharge processes is solved; and meanwhile, the lithium double-fluid flow battery plays roles in purifying the negative electrolyte, cleaning the diaphragm and adjusting the concentration of the positive suspension.

The present invention discloses the preparation process of dispersed composite nanometer TiO2/SiO2 particle. The preparation process includes pre-mixing TiCl4, SiCl4, H2 and air in certain volume proportion, and hydrolysis reaction of the mixture in the central ring of burning reactor at 1200-2500 deg.c to produce dispersed composite nanometer TiO2/SiO2 particle in the form between the nanometer spherical TiO2 particle and nanometer chain SiO2 particle and depending on the Ti/Si molar ratio. Inside the composite nanometer TiO2/SiO2 particle, nanometer crystal TiO2 is dispersed in amorphous SiO2 base to form the dispersant structure. Inside the composite particle, there are Ti-O-Si bond and SiO2 to inhibit the growth TiO2 crystal grain and the conversion from anatase phase to rutile phase. Altering the Si content can controls the content of the anatase phase and the composite particle granularity.

The invention provides low temperature electrolyte for lithium ion batteries, consisting of basal solvent, low viscosity carbonic esters, low viscosity and low melting point addition agent and lithium salts, by studying on main parameters of the electrolyte such as the melting point, the boiling point, the viscosity and the dielectric constant, etc., proper components and rates of the solvent are selected, and the particular addition agent of the low temperature electrolyte is selected, which obtains the electrolyte having desirable high temperature and low temperature charge-discharge performances and low temperature multiplying factor performance. The low temperature electrolyte for lithium ion batteries has the advantages of reasonable ratios of components, desirable normal temperature and low temperature charge-discharge performances, good normal temperature cyclical stability and good low temperature multiplying factor performance, and is applied to the industrialized production and can also be used as a renewal product for the low temperature electrolyte of the prior lithium ion batteries.

The invention discloses a soil collection device for based on geological detection, which comprises a box body, wherein the right side of the top of the inner wall of the box body is fixedly connectedwith a top box; a bottom box is fixedly connected between the bottom of the top box and the bottom of the inner wall of the box body; a vertical plate is fixedly connected between the top and the bottom of the inner wall of the box body; the left side of the top of the inner wall of the box body is fixedly connected with a first electric motor; an output shaft of the first electric motor is fixedly connected with a first gear; a gear belt is in transmission connection with the surface of the first gear, a second gear is in transmission connection with one side, far from the first gear, of thegear belt; the axes of the first gear and the second gear each are fixedly connected with the left side of the inner wall of the box body through a support plate. The invention relates to the technical field of geology related equipment. The soil collection device based on geological detection can collect soil with different depths according to requirements, thus facilitating the collection of samples and ensuring the normal use of the device, and facilitating the movement of the device at the same time.

The invention discloses a preparation method of a nano porous metal film and a microelectrode sensor loaded with glucose oxidase (GOD) on the porous film for blood glucose monitoring, and relates to aprocessing technology of the porous metal film and a sensor technology. Metal and metal oxides of different proportions and thicknesses are subjected to magnetron co-sputtering on a polyimide substrate, treatment is conducted through deionized water or a weak acid solution to remove the metal oxides, metal layers which are each of a three-dimensional porous network structure and are interconnected are left to serves as a support layer and a conductive layer which are loaded with the GOD, the other side of the insulated substrate is coated with Ag/AgCl to serve as a reference-counter electrode, thus an electrochemical two-electrode system is constituted, then the substrate is coated with a high-molecular polymer to serve as a diffusion-limiting layer and an anti-interference hydrophilic layer, and then a glucose sensing microelectrode is constituted. The nano porous metal film is large in specific surface area, the active area of the electrode and the load amount of the GOD are effectively increased, permeability is good, conductivity is high, and physical damage to a microelectrode enzyme film sensing layer can be further prevented to a certain extent. The microelectrode sensor iswide in linear range and good in long-term stability.

The invention discloses a method for processing supercritical expansion of cigarettes dried in the air, which comprises the following steps: a. tobacco leaves are loosened and humidified to increase the water ratio and the temperature of the tobacco leaves so that the tobacco leaves are loosened and the moisture content is even, materials are added to humidify the tobacco leaves; b. the tobacco leaves are cut into leaf threads; c. the leaf threads are stored; d. the leaf threads are put into a dipping mangle to be dipped for 20 to 60 seconds; e. the loosening, storage and feeding are performed; f. the leaf threads are expanded; g. the cooling, resurgence and perfuming processes are performed; and h. the foreign matters in the expanded leaf threads are removed. The method can apparently reduce the tar content, meet the style feature of cured tobacco products, and increase the dried tobacco filing value, thereby reducing the usage amount of finished products of tobacco shreds, and reducing the formulation cost; moreover, the method sufficiently adopts the function of expanded tobacco shreds on the specific incense and the form of smoke gas; and the formulation structure has relatively high adjustability, thereby effectively adjusting indexes such as the incense, concentration, taste, comfort and the form of smoke gas, and improving the formulation usability.

A modified polyphenylene oxide material is provided. The modified polyphenylene oxide material is prepared from 30-85 parts by weight of polyphenylene oxide material, 10-42 parts by weight of polystyrene, 3-15 parts by weight of a flexibilizer, 5-25 parts by weight of a filler, 0.2-0.7 part of a lubricant and 0.2-0.5 part by weight of an antioxidant. A preparing method of the modified polyphenylene oxide material is also disclosed. The method includes weighing the 30-85 parts by weight of the polyphenylene oxide material, the 10-42 parts by weight of the polystyrene, the 3-15 parts by weight of the flexibilizer, the 5-25 parts by weight of the filler, the 0.2-0.7 part of the lubricant and the 0.2-0.5 part by weight of the antioxidant, fully mixing through a high-speed mixer, adding the mixture into a screw extruder, drawing into bars through the screw extruder, and granulating to obtain the modified polyphenylene oxide material. The polyphenylene oxide is adopted as a base material. The polyphenylene oxide has good electric properties, has the minimum dielectric loss factor in engineering plastics, and is low in influences by frequency and temperature. Addition of the polystyrene increases fluidity of the material so that the material is convenient to process and can be directly subjected to injection molding.

Embodiments of the invention disclose a smoke formation matrix for an electronic cigarette cartridge and a preparation method. The smoke formation matrix comprises the following components in parts byweight: 60-85 parts of tea particles, 3.5-15 parts of tea shreds, 3-5 parts of tea powder and 4-25 parts of a smoking agent. A mixture of the tea particles, the tea shreds and the tea powder is usedas the smoke formation matrix; compared with tobacco shreds, harmful substances such as tar, nicotine and the like are not contained in smoke generated after smoking of a tea product, so that environment-friendliness and healthiness are achieved; in addition, the particle sizes of mixtures are different, so that the overall density of the smoke formation matrix and the smoking resistance during smoking can be adjusted; and due to the setting of different particle sizes, the smoke can be released in a gradient manner to improve the durability of the smoke.