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410results about How to "Few influencing factors" patented technology

Signal coordinating control method of one-road one-line straightgoing type public transport system

The invention relates to a signal coordination control method of a one-road and one-line direct movement type public transportation system and reaches the object that public traffic vehicles fully utilize the waiting time and the transit time during the course that the public traffic vehicles pass through crossings under 'the mode of one-road and one-line direct movement' through the coordinative control of all traffic signal lamps and the corresponding regulation of transit operation to improve transit efficiency of the public traffic vehicles and reduce the delay time of the public traffic vehicles. The concrete method is that signal period lengths Ci of all the crossings are calculated; a key signal period length C0 is identified and taken as the key signal period length of all the crossings; all corresponding split/green ratio Lambadas <J>i=y<J>/ sigma y<J>i of all the crossings are calculated; a bus line equivalent distance map which takes an X-coordinate as an equivalent distance axis and takes a Y-coordinate as a time axis is established; bus line direction green light starting time differences between terminal departure stations and initial departure stations or between the signal crossings and bus line direction maximum green time length are identified through a method of 'graphical solution' is improved; therefore, a public traffic vehicle dispatching time is identified.
Owner:SOUTHEAST UNIV

Terylene half speed blended spinning-type ammonia-substituted fiber blended spinning method and its apparatus

The invention designs a blending method and a device for terylene medium-speed blended ammoniac fibers, and includes section transporting and screening, section drying, screw extrusion, melting and spinning, and air blast cooling. The invention is characterized by the following steps: respectively enter POY spinning and FDY spinning after cooling, entering a nozzle for oiling after POY spinning, and then entering a pre-network; entering a tanker for oiling after FDY spinning, entering the pre-network, entering hot-rolling and drafting, enabling POY filaments and FDY filaments to enter into a guiding flute-type draw-off godet for combining and compounding, entering a go-between after compounding, hot-rolling and sizing, and winding and forming after entering a primary network. The blending method for the terylene medium-speed blended ammoniac fibers can produce FDY and POY composite network yarn by the single-stage process, the combined network yarn ITY product produced by the method has stable inner index and quality, little influencing factor, uniform waster-water shrinkage rate, stable chromaticity, and great economic benefit.
Owner:TONGKUN GRP

Greenhouse gas collection device for soil at different depths, and in-situ observation method

The invention provides a greenhouse gas discharging and collection device for soil at different depths. The device comprises more than two gas collectors with different lengths of circular gas storage tubes. The device is simple in structure, convenient to use and suitable for collecting greenhouse gas at different depths of soil with non-saturated water and soil with saturated water in a non-growth season and can continuously collect gas such as CO2, N2O and CH4; when the gas is collected, the environment interference is small, so that the influence factor in a gas collection process is reduced; the device is easy to operate; the collected greenhouse gas has representativeness in discharging intensity in a unit area; and the device can continuously observe discharging of the greenhouse gas of the soil for many years and can observe the accumulation situation of the greenhouse gas in a freezing process and the discharging situation in a soil melting process. The device can be widely applied to observation and research on discharging of the greenhouse gas of various types of soil at different depths in a farmland, a grassland, a wet land and the like.
Owner:NORTHEAST INST OF GEOGRAPHY & AGRIECOLOGY C A S

Tool life prediction system based on energy

The invention provides a tool life prediction system based on energy. The system comprises a current and voltage measuring system, a tool management system, a tool database, a two-dimensional code printing system and a two-dimensional code scanning device. Currents and voltages are monitored in real time, after filtering and A / D conversion, the actual power of a machine tool is acquired, the monitored actual power of the machine tool is subtracted from the no-load power of the machine tool for integration so that consumed energy in the tool machining process can be acquired, and the tool management system is used for subtracting the residual life, acquired by inquiring the tool database, of a tool from the consumed energy in the tool machining process so that new residual life energy of the tool can be acquired and displayed on a display screen. Current signals and voltage signals are monitored in real time in the tool cutting process, the real-time change of the power in the tool cutting process is acquired, then the consumed energy of the tool is acquired, and then the residual life of the tool is predicted. Prediction accuracy of the tool life is improved, the tool utilization rate is increased, and production cost is reduced.
Owner:SHANGHAI JIAO TONG UNIV

Novel polypeptide modified tumor targeted liposome of targeted integrin receptor

The invention provides a novel polypeptide modified tumor targeted liposome of a targeted integrin receptor. The novel polypeptide is mainly formed by covalent linkage of ring-shaped RGD and cell penetrating peptides, and not only has the selective targeting capability of an integrin receptor, but also can achieve mediated endocytosis; the liposome mainly comprises phospholipid, cholesterol, lipid-polyethyleneglycol and lipid-polyethyleneglycol-novel polypeptide ligand chimeric substance, and is a very potential tumor targeted treatment carrier.
Owner:SICHUAN UNIV

Method and device for ultrafast time discrimination measurement of seed photo-signal

The invention relates to a method and a device, which conducts super-fast time identification and measurement to seed optical signal. The method essentially includes the following steps: (1) super short laser pulse produced by a laser pulse light source is split into two paths by an optical beam splitting system after energy regulation, collimated beam narrowing and spatial filtering system optimization and selection, among which one path passes a time delay control system and a parameter pump pulse optical path, and the other path passes a seed exciting pulse optical path; (2) the collected seed optical signal and the pump pulse incident into a parameter amplifying system, so that the parameter amplifying system conducts ultra fast amplification to the sample seed optical signal under a linear amplifying state; (3) a parameter amplifying signal detecting system is used to detect, record, refer to and revise the signal, and give corresponding detecting result to ultra fast spectra analysis and time identification and measurement of amplifying the seed optical signal. The invention can amplify the weak seed optical signal and realize detection of ultra fast time identification, and is a novel detecting method in the field of ultra fast spectroscopy.
Owner:PEKING UNIV

Nitrosation and nitration method for iron and carbon, reactor using the method and sewage denitrogenation method

The invention discloses a nitration method of iron-carbon nitrosation, a reactor therefor and a method of sewage water denitrogenation. Iron filings and active carbon are added in the reactor hierarchically or mixed, water containing ammonia nitrogen is supplied in the reactor and oxygen enriched air is blew in thereof, only inorganic iron-carbon in condition of aeration, ammonia nitrogen is conversed into nitrite and nitrate steadily. The reactor is composed of a supporting layer, a back purge system, a water-inlet- distribution device, a air diffuser, iron / carbon composite material, a drift eliminator and bed body, nitrosation or nitration is finished in action of ammonia sewage water. The reactor is combined with a denitrify reactor, a anaerobic bioreactor, or used as a aeration biological filter of biology filler to finish denitrification process of nitrogen sewage water. The reactor has advantages of stable performance, high efficiency, low power cost and simple maintenance. An integrated denitrification technics is formed in the reactor, denitrification efficiency of the whole flow is improved.
Owner:BEIJING MUNICIPAL RES INST OF ENVIRONMENT PROTECTION

Improved cataplasm ground-mass and use thereof

The invention discloses an improved substrate of a cataplasma and the application thereof to loxoprofen sodium cataplasma. The substrate of the cataplasma adopts the combined application of two or more cross-linking agents and achieves the purposes of increasing the viscosity of a paste and improving the ductibility and moldability of the paste. The application of the substrate can reduce the variety and usage of thickening accessories or can increase the viscosity of the cataplasma to the extent required by a viscous force even without adding special thickening agents. The substrate has advantages in ensuring the good ductibility and moldability of the cataplasma and quickly establishing analytical methods, and the like, thus being significant for the further promotion and application ofthe cataplasma.
Owner:CHONGQING PHARMA RES INST

Shield grid trench MOSFET device and manufacturing method thereof

The invention discloses a shield grid trench MOSFET device.In grid electrode structures of primitive cells, shield electrodes are formed after epitaxial layers filling trenches are etched back, and trench grids are formed at the tops of the shield electrodes; the shield electrodes and adjacent drift regions make direct contact, carrier balance is achieved, the shield electrodes of the primitive cells and the drift regions form alternately-arranged structures in the transverse direction, and the shield electrodes carry out transverse exhausting on the adjacent drift regions in reverse bias of the device.The invention further discloses a manufacturing method of the shield grid trench MOSFET device.According to the shield grid trench MOSFET device and the manufacturing method, it is unnecessary to arrange dielectric films at the bottoms of the shield electrodes, stepping of device units can be reduced, the specific on-resistance of the device can be reduced, manufacturing difficulty can be lowered, and the uniformity of device performance can be improved.
Owner:SHENZHEN SANRISE TECH CO LTD

Indoor air purifying bag and preparation method thereof

The invention relates to an indoor air purifying bag and a preparation method thereof and aims to solve a problem that an indoor air purifying bag in the prior art is complex in technology and is inconvenient to use. The indoor air purifying bag is prepared by filling a breathable hydrophilic fabric bag with active carbon granules and vermiculite granules, wherein the active carbon granules and the vermiculite granules are coated by air purifying catalyst materials in the same function, or the different functions, or incompletely same functions. The fabric is supported by a catalytic material which has a catalytic decomposition function on formaldehyde, ammonia and the like. The carbon granules are supported by a catalytic material which has a catalytic decomposition function on benzene-series substances and formaldehyde. The vermiculite granules are supported by a catalytic material which has a catalytic decomposition function on the majority of TVOC. The preparation method includes steps of preparing the catalytic materials and deionized water into a catalyst solution, enabling a thin-piece bag material of the breathable hydrophilic fabric bag, the active carbon granules and the vermiculite granules to be supported with the catalyst solution in a coating and impregnating manner, uniformly mixing the active carbon granules and the vermiculite granules supported with the catalyst solution, packaging the active carbon granules and the vermiculite granules in the fabric bag supported with the catalyst solution, and storing the fabric bag in a sealing manner. The indoor air purifying bag has effects of inhibiting bacteria, proofing mould, preventing insect, removing odor and harmful components in air, is simple in form, is convenient to use and is less in influent factor.
Owner:BEIJING AOYIER ENG TECH

Method optimizing sparse matrix vector multiplication to improve incompressible pipe flow simulation efficiency

ActiveCN103984527AImprove data locality and cache hit ratioFew influencing factorsConcurrent instruction executionData transmissionDecomposition
The invention discloses a method optimizing sparse matrix vector multiplication to improve incompressible pipe flow simulation efficiency. The method uses a QCST storage structure to combine with the advantages of a quadtree structure and a CSR storage structure to operate recursion decomposition and rearrangement to a sparse matrix to realize the storage of the sparse matrix, so that the sparse matrix vector multiplication operating process has the universality to the matrix form, particularly is suitable for the matrix with the whole being sparse and the local part being provided with a plurality of dense sub-matrixes. The method realizes the sparse matrix vector multiplication based on the QCSR storage structure through four strategies of thread mapping optimization, data storage optimization, data transmission optimization and data reusing optimization in a CPU / GPU (central processing unit / graphics processing unit) heterogeneous parallel system. The method has the advantages that the data locality and the cache hit rate in the sparse matrix vector multiplication value calculating process are improved, and the better calculating acceleration and the whole acceleration effect are obtained, so that the incompressible pipe flow simulation efficiency is improved.
Owner:HANGZHOU DIANZI UNIV

Heat management coupling system of power lithium battery pack

PendingCN107863588AConvenient temperature field distributionFew influencing factorsSecondary cellsCoupling systemPhase change temperature
The invention discloses a heat management coupling system of a power lithium battery. An air blowing fan and an air sucking fan are respectively installed on the front side and the rear side of a boxbody; a BMS battery management system and a heat management controller are fixedly installed on one side in the box body; one end of a temperature sensor is connected at the positive electrode end ofa battery module group, and the other end of a temperature sensor is connected with the BMS battery management system; the heat management controller is signally connected with an electrical heating film, the air blowing fan and the air sucking fan; through real-time collection, analysis and processing of a temperature signal, the BMS battery management system makes the heat management controlleradopt measurements of heating, cooling or heat preservation to control the temperature of the lithium battery. The heat management coupling system ensures that the influence factor of environmental temperature on the battery pack is minimized, and therefore achieves the purposes of heat dissipation during high-temperature, heating during low-temperature and phase-change temperature control, wherein the maintenance and replace methods of the phase-change material pack are more concise and convenient, and the device makes the temperature field distribution of the battery module group more even and accordant.
Owner:NANCHANG HANGKONG UNIVERSITY

Thermal power plant coal inventory measuring and calculating method based on four-axis aircraft

The invention relates to a thermal power plant coal inventory measuring and calculating method based on a four-axis aircraft. The method includes the following steps that (1) laser distance measurement is conducted over a coal pile, the straight-line distance h between an acquisition point over the coal pile and a surface point of the coal pile is measured, the straight-line distance between the acquisition point and the horizontal plane of a place where the coal pile is located is H, the straight-line distance z between the surface point of the coal pile and the horizontal plane of the place where the coal pile is located is equal to H-h, and meanwhile, horizontal coordinates x and y of the acquisition point are acquired through a GPS positioning module; (2) the step (1) is repeated, so that the straight-line distances between multiple acquisition points over the coal pile and multiple surface points of the coal pile and horizontal coordinates are acquired, the straight-line distances between the surface points of the coal pile and the horizontal plane of the place where the coal pile is located are acquired through the straight-line distances between the acquisition points over the coal pile and the surface points of the coal pile, and therefore a coal pile vertical view outline is drawn; (3) the approximate size of the coal pile is calculated through the straight-line distances between the surface points of the coal pile and the horizontal plane of the place where the coal pile is located and the horizontal coordinates of the acquisition points. The method is suitable for measurement conducted in various environments and large-area region measurement can be achieved.
Owner:NORTH CHINA ELECTRIC POWER UNIV (BAODING)

Gas pipeline leakage point detection device and detection method

The invention discloses a gas pipeline leakage point detection device and a detection method, and relates to the field of gas pipeline detection. The gas pipeline leakage point detection device comprises a sensor module, a data transmission module, a fixed IP line, a server, a gas pipeline leakage alarm management system and a management computer. The sensor module acquires flow data, pressure data and infrasonic wave data of a gas pipeline. The data transmission module is connected with the sensor module. The fixed IP line is connected with the data transmission module. The server is connected with the fixed IP line, and the flow data, the pressure data and the infrasonic wave data are uploaded to the server through the data transmission module and the fixed IP line. The gas pipeline leakage alarm management system is installed in the server, receives, calculates and analyzes the flow data, the pressure data and the infrasonic wave data, shows the gas running state and gives an alarm.The management computer is connected with the server and used for managing the gas pipeline leakage alarm management system. By the adoption of the gas pipeline leakage point detection device and thedetection method, gas feature graphs of different road sections are provided, the number of influence factors such as the environment is reduced, the false alarm rate of gas alarms is reduced, and the detection accuracy and the alarm efficiency are high.
Owner:CHANGCHUN WHY E SCI & TECH

Preparation method of nano-fiber poly-aniline

The invention discloses a preparation method of nano-fiber poly-aniline. In the method, an aniline monomer and inorganic acid are used as raw materials to prepare the nano-fiber poly-aniline through oxidative polymerization by using an electrochemical unipolar pulse method under a room temperature condition. The preparation method is simple to operate, needs no oxidant and gets rid of secondary pollution caused by the oxidant. A product prepared by the method has high electrochemical stability and super capacitive performance.
Owner:TAIYUAN UNIV OF TECH

Method for improving flashover performance of vacuum edge surface of polymer insulator

The invention belongs to the technical field of high-voltage electrical insulating material, and particularly relates to an effective method for improving the flashover performance of a vacuum edge surface of a polymer insulator. The method comprises the step of enabling the polymer insulator to be contacted with fluorine-containing gas with a certain proportion at a certain temperature for generating fluoridation to form a fluoride layer with a certain thickness on the surface of the polymer. The method has the characteristics that the fluoride layer is formed on the surface of the polymer such as polyethylene, polypropylene, nylon and the like by the fluoridation of the gas, so that the flashover performance of the vacuum edge surface of the insulator can be improved, the surface breakdown voltage of the insulator is increased, and the insulating strength of the surface of the fluorizated insulator is 1.2-1.6 times higher than that of the non-fluorizated insulator.
Owner:NORTHWEST INST OF NUCLEAR TECH

Eggshell type Pd catalyst prepared by reaction deposition method

The invention discloses an eggshell type Pd catalyst prepared by a reaction deposition method, which belongs to the technical field of industrial catalysts. The method comprises the following steps: adding a carrier into Pd metal salt solution; controlling the deposition of Pd on the surface of the carrier by a rapid reduction reaction; and carrying out filtering, washing as well as heating and drying in inert atmosphere to form a stable eggshell type Pd catalyst. The eggshell type Pd catalyst has the advantages of simple process, controllable structure, low energy consumption process and the like; Pd particles in the prepared eggshell type Pd catalyst are evenly distributed on the surface of the carrier, thus the eggshell type Pd catalyst reduces the consumption of noble metal Pd, effectively reduces the cost of the catalyst and has favorable industrial application prospect. The eggshell type Pd catalyst can be used for enyne hydrocarbon selective hydrogenation, cracking ethylene C9 fraction selective hydrogenation, olefin aldehyde selective hydrogenation, anthraquinone catalytic hydrogenation in H2O2 synthesis and other reactions.
Owner:成都大研科技产业发展有限公司

Method for manufacturing front side grid line electrode of solar battery

The invention relates to a method for manufacturing a front side grid line electrode of a solar battery. The technical scheme of the method is as follows: the method for manufacturing the front side grid line electrode of the solar battery is characterized in sequentially comprising the following steps of: 1. acting a rectangular tooth press mould with proper aspect ratio on the front side of the thin polymer film-coated solar battery to form into a rectangular tooth pattern corresponding to the press mould; 2. removing a polymer film at a groove and reducing a reflection coating by means of chemical corrosion; and 3. performing a selective metal chemical plating technology and an electroplating technology to manufacture the grid line electrode. With the scheme, the method overcomes the disadvantage of the prior art, provides a new scientific and reasonable method for manufacturing the front side grid line electrode of the solar battery, prevents a battery substrate from being damaged, leading the press mould to be hardly deformed, being suitable for recycle in industrialization, and reducing the cost.
Owner:浙江日兆新能源开发有限公司

Insulator possessing hole microgroove texturing surface and manufacturing method thereof

The invention discloses an insulator which possesses a hole microgroove texturing surface and is applied to the high voltage insulating material technology field and a manufacturing method thereof. In the prior art, a surface breakdown voltage resistance ability is poor; reliability is not high and repeatability is poor, which is difficult to satisfy a vacuum insulation requirement of a high voltage apparatus; and there are other technical problems. By using the insulator and the method of the invention, the above problems are mainly solved. The insulator comprises an insulator body. The insulator body is made of a polymer material and a surface is woven with periodically parallel V-shaped microgroove arrays. Microgroove surfaces are uniformly distributed with holes with a micron order size. The microgrooves are etched by a laser. And the holes are formed through ablation by the laser. The manufacturing method comprises the following steps of using laser grooving to etch the microgroove arrays on an insulator body surface; and using laser ablation so as to form the holes on the microgroove surfaces. The insulator and the method can be applied to the vacuum high-voltage insulation device field and the high-voltage insulation fields under other environments.
Owner:NORTHWEST INST OF NUCLEAR TECH

Macrostructure and microstructure controllable hydroxyapatite porous ceramic, preparation method thereof and application of ceramic

The invention discloses a macrostructure and microstructure controllable hydroxyapatite porous ceramic, a preparation method thereof and an application of the ceramic. The hydroxyapatite porous ceramic is subjected to 3D (three-dimensional) direct-writing to obtain a three-dimensional structure, and freeze pouring regulation is performed to obtain a microstructure porous structure. A raw materialA is added into a solvent containing dispersing agents and mixed with the solvent to obtain suspension liquid, and then gel is added into the suspension liquid and mixed with the suspension liquid toobtain slurry. The raw material A comprises hydroxyapatite powder, the slurry passes 3D direct-writing equipment and is controlled to be in a gel state when passing the direct-writing equipment, the slurry is printed and frozen to obtain a green body with a three-dimensional structure, and the green body is freeze-dried and sintered to obtain the macrostructure and microstructure controllable hydroxyapatite porous ceramic. Direct-writing and freeze pouring technologies are initiatively and efficiently combined, the obtained hydroxyapatite porous ceramic is used as a bone scaffold, and the customization requirements of different bone tissues can be met.
Owner:CENT SOUTH UNIV

Method of removing ammonia nitrogen in water by using electrodialysis

The present invention relates to a method for removing ammonia nitrogen is water by adopting electrodialysis. Said method includes the following steps: (1), adopting the process of coagulation, sedimentation or filtration to treat raw material; (2), making oxidation treatment; and (3), feeding the water undergone the process of oxidation treatment into electrodialysis equipment to make ammonia nitrogen removal treatment, its electric current is 0.1-5A, voltage is 5-240V, it adopts pole-reversing method, its pH value is controlled in the range of 5-11, and the water flow rate can be controlled.
Owner:HARBIN INST OF TECH

Method for improving oil yield of microalgae

The invention discloses a method for improving oil yield of microalgae. The method comprises the following steps: firstly, performing photoautotrophic cultivation on the microalgae in an improved culture medium containing a plant hormone, and at the stable phase, performing light stress and nitrogen stress cultivation on the microalgae obtained by centrifuging as seeds in a stress culture medium. The method for improving the oil yield of the microalgae has the advantages that the demand on nutrient substances in the cultivation process is reduced so that the cultivation cost can be reduced, and the biomass and the oil yield of chlorella can be improved simultaneously; the cultivation method is simple and easy to operate, and cannot be polluted easily; besides, the method has few influence factors and is suitable for large-scale cultivation.
Owner:SHIHEZI UNIVERSITY

Device for improving AAO treated dyeing wastewater and method thereof

The invention relates to a method for improving AAO treated dyeing wastewater and a device thereof. The device comprises an anaerobic reactor, a primary settling tank, an anoxic reactor, an aerobic reactor and a secondary settling tank, wherein the anaerobic reactor is communicated with the primary settling tank, the anoxic reactor, the aerobic reactor and the secondary settling tank through pipelines in sequence; the primary settling tank is communicated with the anaerobic reactor through a sludge pump by a return pipe; the aerobic reactor is communicated with the anoxic reactor through the sludge pump by the return pipe; and the secondary settling tank is communicated with the aerobic reactor through the sludge pump by the return pipe. The method comprises the following steps: controlling the reflux ratio of sludge to be maintained at 100 percent and the reflux ratio of mixed solution to be 100 percent without sludge discharge at environmental temperature of between 20 and 30 DEG C, wherein preferably, retention period of an anaerobic unit is 6.5 hours, retention period of an anoxic unit is 6.5 hours, and the retention period of an anoxic unit is 16 hours; and then discharging water. The method and the device are organically combined with anaerobic, anoxic and aerobic biological treatment methods to achieve advantage complementation with one another.
Owner:DONGHUA UNIV

Measurement circuit and measuring method of LVDT (Linear Variable Differential Transformer)

The invention discloses a measurement circuit of an LVDT (Linear Variable Differential Transformer). The measurement circuit comprises a sinusoidal pulse width modulator, a signal conditioning circuit, a linear variable differential transformer, a first sampling circuit, a second sampling circuit and a controller; the sinusoidal pulse width modulator is used for outputting pulse width and frequency-adjustable rectangular wave signals; the input end of the signal conditioning circuit is connected with the sinusoidal pulse width modulator; the signal conditioning circuit outputs amplitude and frequency adjustable sinusoidal wave signals; the primary coil of the linear differential transformer is connected with the output end of the signal conditioning circuit to receive the sinusoidal wave signals as LVDT excitation signals; the secondary coil of the linear differential transformer outputs LVDT differential signals; the input end of the first sampling circuit is connected with the primary coil; the input end of the second sampling circuit is connected with the secondary coil; and the controller is connected with the output end of the first sampling circuit and the output end of the second sampling circuit and is used for performing amplitude normalization processing to output an LVDT linear position. With the measurement circuit of the LVDT, relatively complicated analog circuit parameter adjustment is avoided, zero-point residual voltage, phase drift and sensor nonlinearity can be effectively compensated. The measurement circuit has the advantages of high stability and can reduce measurement errors.
Owner:SUZHOU INST OF BIOMEDICAL ENG & TECH CHINESE ACADEMY OF SCI

CT broken line discrimination method during bus protection

The invention discloses a CT broken line discrimination method during bus protection. The CT broken line discrimination method determines whether a CT broken line fault occurs during bus protection by determining current fault components such as zero sequence and negative sequence currents of each unit of a protection device connected with a bus, one specific unit which has the fault can be accurately determined, so a broken line problem of a voltage loop because of voltage acquisition is avoided like a current loop, influence factors are reduced, the device is greatly simplified, cost is reduced, and reliability is improved.
Owner:BAOSTEEL STAINLESS STEEL

Catalyst for preparing low alcohol from synthesis gases as well as preparation method and application of catalyst

The invention discloses a catalyst for preparing low alcohol from synthesis gases as well as a preparation method and application of the catalyst. The expression of the catalyst is CuaCobCec / CNTd, wherein Cu and Co act as activated components; Ce acts as an additive; the CNT acts as a vector, and a, b, c and d in the expression respectively refer to the mass percentage of Cu, Co, Ce and CNT in the total amount of the catalyst, and a is equal to 10-25%, b is equal to 5-15%, c is equal to 0-10%, and d is equal to 50-85%. The catalyst is prepared by adopting a traditional impregnation method, raw materials are easily available, the preparation method is simple, and no pollution exists, and compared with the similar catalysts, the catalyst has the advantages of mild reaction condition, high and stable catalytic activity, high low carbon mixed alcohol selectivity in byproducts, good repeatability and the like, and is suitable for industrial production.
Owner:TAIYUAN UNIV OF TECH

Device for stimulating nutrient absorption of plant root system and using method of device

The invention discloses a device for stimulating nutrient absorption of a plant root system and a using method of the device. The device comprises a sampling pipe, a liquid-supplying system and a low-pressure system, wherein the sampling pipe is respectively connected with the liquid-supplying system and the low-pressure system; the sampling pipe comprises a sampling pipe body and an anion / cation exchanging membrane; a plurality of holes are arranged in the middle of the outer wall of the sampling pipe body; and a plurality of grooves are arranged between the holes on the outer wall of the sampling pipe body. The method for using the device comprises the steps of: burying the sampling pipe which is soaked in a sodium bicarbonate (NaHCO3) solution in the soil for 2 hours; taking the sampling pipe out and eluting the sampling pipe with hydrochloric acid (HCl) solution; and detecting the content of anionic and cationic nutrients in the eluent to evaluate the nutrients, which can be absorbed by the plant root system, in the soil. The system disclosed by the invention has the advantages of high accuracy, energy conservation, environment friendliness, simple operating steps and the like.
Owner:SOUTH CHINA AGRI UNIV

Preparation method for electroactive polypyrrole film

The invention discloses a preparation method for an electroactive polypyrrole film. The preparation method comprises the following steps of: preparing an aqueous solution of single pyrrole, an electrolyte solution and a protonic acid solution; secondly, mixing the three solutions; and obtaining a polypyrrole film electrode material on a conducting substrate by using a unipolar pulse electric polymerization. According to the preparation method disclosed by the invention, the operation is simple; products are easily obtained; no oxidant is needed; and the secondary pollution caused by the oxidant is avoided. The polypyrrole film electrode material prepared by the method in a neural solution has higher discharging stability.
Owner:TAIYUAN UNIV OF TECH

Current balancing circuit and backlight module with same

The invention relates to a current balancing circuit and a backlight module with the same. The current balancing circuit comprises a current balancing unit, a control unit and a detection unit, wherein the current balancing circuit is coupled to a plurality of light-emitting units so as to stabilize the current of the plurality of light-emitting units not be influenced by input voltage; the detection unit is coupled to the plurality of light-emitting units and the current balancing unit so as to be beneficial to detecting the minimum operation voltage of the light-emitting units; and the control unit is coupled to the current balancing unit so as to control the operation of the light-emitting units.
Owner:华映视讯(吴江)有限公司 +1
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