86results about How to "The method is simple and easy" patented technology

The invention discloses an index screening and processing method for evaluating quality of tobacco leaves. The method is characterized by comprising the following steps: determining 21 tobacco leaf quality indexes, screening the quality evaluation indexes by utilizing a main component analysis and relevant analysis way, grading the quality evaluation indexes by utilizing probability distribution, determining quality evaluation index weight by utilizing a layering analysis way, establishing a tobacco leaf quality judgment function by utilizing a K-average value clustering and multi-category gradual judgment analysis way, and detecting the accuracy of the judgment function. The tobacco leaf quality index which can accurately analyze and evaluate the tobacco leaf quality can be more systematically and comprehensively screened from the tobacco leaf quality indexes of multiple base units.

The invention discloses a Chinese web page repeated document detection and filtration method based on full stop characteristic word string, which comprises the following steps: extracting the full stop characteristic word string of the web page to be detected; using the full stop characteristic word string to filtrate template information for the web page to be detected to retain and extract text contents of the web page subjects; calculating similarity of the text contents of the web page subjects, and judging repetition relationship and inclusion relationship between the web pages; and clustering the web pages having the repetition relationship and inclusion relationship. According to the invention, aiming at Chinese web page, particularly Chinese news web page, firstly effective detection characteristics are searched, which can effectively detect the effective text portions on the web pages and filtrate noise which is irrelevant with the text content of the subject, such as advertisement on the webpage; and on the basis, the problems of similarity measurement and document repetition detection are solved, and finally the parallel processing problem during large-scale repeated document detection is solved.

A preparation method of a high performance activated carbon is provided. Raw material coal is ground to 50-100 meshes and evenly mixed with KO according to weight ratio of 1:1-6. The mixture is placed in a reactor which is pumped in N2 for protection and heated according to a speed of 2-10 DEG C / min from room temperature to the temperature of 500 to 650 DEG C; the temperature is maintained for 0.5-2 hours; then the mixture is heated according to a speed of 5-10 DEG C to the temperature of 800 to 950 DEG C which is maintained for 0.5-2 hours and cooled to room temperature; an activated material is obtained, which is washed by water to a pH value of 7-7.5, then dipped with hydrochloric acid for 2-3 times and 2-3 hours each time, then washed by distilled water to be neutral and dried; the super activated carbon is obtained. The activated carbon prepared by the invention has the advantages that the ash content is small; the specific area is large; the method adopted is simple and accurate with small pollution degree, low cost and simple technical process, which is beneficial to successful implementation of industrialization.

The method includes following steps: the cadmium oxide, cadmium carbonate, alkyl carboxylic acid, oleic acid, selenourea, thiourea are taken as raw material. Under the cover of oleic acid, or TOPO, or lauryl amine, or hexadecyl amine, or octadecyl amine, the alkyl carboxylic acid cadmium or the toluol solution of oleic acid cadmium reacts with aqueous solution of selenourea or thiourea at interface to form semiconductor nano-microparticles. Theses semiconductor nano-microparticles can implement wavelength tunable visible light under ultraviolet lamp.

A method for preparing a silver / carbon nanometer complex relates to a method for preparing a noble metal / carbon nanometer complex and solves the problem of poor stability of nano-silver prepared by adopting the prior art. The preparing method is as follows: coordinating carbon sources and silver ions; solidifying a complex; performing heat treatment and activation treatment; and obtaining the silver / carbon nanometer complex. The silver / carbon nanometer complex prepared by the method has good stability, high yield and even silver particle dispersion. The method is simple, easy to operate, low in energy consumption and cost and is suitable for industrialized production.

The invention relates to the field of tobacco floating seedling and aims to provide a method for improving the germination rate of tobacco floating seedling seeds and strengthening seedlings. According to the method, a thallus of plant root endophytic fungus piriformospora indica, which is cultured by using a liquid medium, and a culture filtrate are uniformly mixed with a tobacco seedling substrate, and the germination rate of the tobacco floating seedling seeds is improved and the growth and stress tolerance of tobacco seedlings are promoted by using the thallus of piriformospora indica and the substances released by the thallus in the culture filtrate. The method provided by the invention is simple, convenient and feasible, and according to the method, the piriformospora indica is cultured by using a conventional method, standard rules are used for performing substrate mixing, tray filling, sowing, floating seedling, seedling exercising and transplantation, and the manner of inoculating the piriformospora indica is matched with the rules for floating seedling. By using the method provided by the invention, the germination rate of the tobacco seeds can be improved; root systems of tobacco seedlings are assisted to tolerate low-oxygen stress, so that the root systems of the tobacco seedlings are developed and the root dry weight is increased; the roots are assisted to absorb nutrients, so that the growth of the tobacco seedlings is promoted, the stems of the tobacco seedlings are thickened, the diameter of the stems is increased, and the plant height is increased; and the survival rate of the tobacco seedlings after transplantation is improved.

The invention is a method of prepare A zeolite with coal gangue which is by burning the coal gangue and mixing it with alkaline fusion solution to react at high temperature, then extracting the alkaline fusion in the water to remove the Fe, adding aluminum salt and heating to crystallize, finally filtering, washing and drying the crystallization to obtain the high quality A zeolite. The invention has got advantages such as easy and simple techniques in the process, small reacting devices, low cost, exact repeatability. The obtained A zeolite is of narrower particle distribution, quite perfect crystal shape and high crystalline.

The invention relates to a method for preparing a metal organic frameworks (MOFs) membrane on the surface of a polytetrafluoroethylene hollow fiber carrier. A continuous crackless MOFs membrane is prepared on the surface of a polytetrafluoroethylene hollow fiber membrane through a method of ''seed precoating-heat treatment-secondary growth''. The method is characterized in that after seed precoating, seeds and the polytetrafluoroethylene carrier are effectively combined through the heat treatment method so as to induce to generate the continuous MOFs membrane. The method of the invention has certain universality, is simple to operate, and is easy to control.

The invention relates to the field of fiber processing, and especially relates to a graphene polymer fiber and a preparation method thereof. The preparation method of the graphene polymer fiber comprises the following steps: spinning a graphene mixture and polymer resin mixture used as a core layer and a water-soluble polyester slice used as a skin layer to obtain a double-component composite fiber; and removing the surface water-soluble polyester from the double-component composite fiber to obtain the graphene polymer fiber. The graphene mixture and polymer resin mixture used as the core layer and the water-soluble polyester slice used as the skin layer are spun, and the skin layer is removed through a water dissolving treatment technology to prepare the high-profile degree conductive graphene fiber. The method is simple and is easy to implement; the prepared fiber has high profile degree, and has an enhanced siphon effect on sweat; and a fabric made of the fiber has the characteristics of soft, comfortable, dry and clean hand feeling, high electric conductivity, good antibiosis and bacteriostasis property, and good moisture absorption and sweat perspiration property. The fabric made of the fiber realizes multifunctional compounding of single fibers, and greatly increases the added values of products.

The invention provides a method of loading titanium dioxide nanorod arrays on a surface of a titanium wire mesh. The method uses a solution direct oxidation method, and comprises steps of: preparing a pickling solution, using nitric acid and hexamethylene tetramine, or nitric acid and melamine, or hydrogen peroxide solution as reaction solutions, performing pickling for the titanium wire mesh and then immersing in the reaction solution to react, putting into a hot water with a pH value of 1.0 to 3.0 adjusted by hydrochloric acid or into a hot water to react, taking out and drying to get the finished product. The method is simple, pollution-free and low in cost, and does not need templates and catalysts during the preparation process; and the obtained film can firmly combine with titanium substrates and can be widely used in fields of photocatalysis, photoelectrocatalysis, thin film solar cells, gas sensors, biological materials, etc.

The invention discloses a synthetic method and application of a urea monomer modified hydroxyl acrylic emulsion. The urea monomer modified hydroxyl acrylic emulsion is synthesized by a pre-emulsification semi-continuous seed emulsion polymerization method and applied to double-component aqueous plastic paint. According to performance test, functional groups of urea monomer interact with surface of polar plastic to enhance dry and wet adhesive force; meanwhile, hydroxy reacts with isocyanate to form a stereoscopic net structure to increase compactness of a film, water resistance and ethanol wiping resistance performances. The urea monomer modified hydroxyl acrylic emulsion prepared by the invention can carry out solidification reaction with aqueous isocyanate to gain good adhesive force and ethanol wiping resistance, so as to satisfy application requirements of low temperature solidified polar plastic paint.

The invention discloses a gradient nano-coating used for a thermal barrier coating anti-corrosion function and a preparation method thereof. A substrate is steeped and lifted in pure sol and mixed sol of yttria stabilization zirconia (YSZ) and Al 2O3. A gradient coating structure with proportion of the YSZ and the Al2O3 changed from inside to outside is obtained in a prepared mode. The gradient nano-coating is composed of particles with the particle diameter of 10 to 100nm. The total thickness of the coating is 0.5 to 5 micrometers. According to the novel gradient coating structure, the facts that anti-corrosion property of the Al2O3 is kept and meanwhile a phenomenon of coating exfoliation due to difference of thermal expansion coefficients between the YSZ and the Al2O3 materials is overcome are hopeful to be achieved, the gradient nano-coating structure is prepared through a mixed sol steeping and lifting method, and then high temperature roasting is conducted. A composition weight ratio of the YSZ to the Al2O3 in the mixed sol changes between 9 to 1 and 1 to 9. The particles contained by the YSZ sol are in a monoclinic crystal shape. Temperature of the high temperature roasting is 500 to 800 DEG C. The preparation method is simple and convenient to achieve, and practical. The coating prepared is even in structure.

The invention provides a method for production of Nafion / mesoporous silicon dioxide composite proton exchange film. By using the method of dip-coating in situ, silica sol comprising a surfactant is coated on the surface of Nafion film by pulling to obtain the Nafion / mesoporous silicon dioxide composite proton exchange film. Alcohol-resisting performance of a hybridized film and the proton conducting performance are controlled by varying type and concentration of the surfactant, speed rate and times of the dip-coating pulling, and the interval time among several dip-coating pulling. The surface of the obtain composite film includes a nanometer network structure of the mesoporous silicon dioxide, which can efficiently block methanol from penetration, meanwhile, on account of hydrophilic property of the mesoporous silicon dioxide, the proton conducting rate of the composite film still remains as equivalent as that of the Nafion film or even higher than that of the Nafion film. The above characteristics endow the composite film with a quite extensive prospect in applying to direct methanol fuel battery.

The invention provides a fresh keeping control method and device of refrigerating equipment. The fresh keeping control method of the refrigerating equipment comprises the following steps of: detecting the humidity in fresh keeping space by a humidity sensor arranged in a fresh keeping space; determining the type of food materials placed in the fresh keeping space according to the detected humidity; determining corresponding fresh keeping operation conditions according to the type of the food materials, wherein the fresh keeping operation conditions at least include a storage temperature range and an oxygen concentration range, corresponding to the type of the food materials; and controlling a refrigerating system and an air conditioning system to run so as to keep the temperature of the fresh keeping space within the storage temperature range and keep the oxygen concentration of the fresh keeping space within the oxygen concentration range. According to the scheme provided by the invention, the category of the food materials is determined through humidity, so that different fresh keeping operation conditions are determined according to the type of the food materials; through adjustment of the storage temperature and the oxygen concentration, the fresh keeping space meets fresh keeping demands of the food materials, and the fresh keeping effect of the food materials is improved.

The invention provides a synthesis method used for silver sulfide nanocrystals of adjustable ligand-covered near infrared luminescence, comprising the steps as follows: silver source and organic coating agent are added into toluene, heated and dissolved, subsequently added into water solution of sulfur source, reacted for 10min-24h at the temperature of 25-180DEG C; the reaction is carried out under normal pressure or high-pressure kettle; the silver source and the sulfur source are reacted at two-phase interface, the forming and growing of the silver sulfide nanometer particle crystal nucleus are carried out; finally, silver sulfide nanometer crystal with narrow distribution of the near infrared luminescence is formed. The synthesis method has the advantages of mild reaction time, short preparation period, easily controlling the consistency of raw material, being simple and feasible, thus being beneficial for amplification preparation of the large scale processing and production; the prepared silver sulfide nanometer particle can be dispersed into non-polarity organic solvent. The silver sulfide nanometer crystals with adjustable near infrared luminescence and different sizes can be synthesized by adjusting the reaction time, reaction temperature, the quantity ratio and dosage of the reaction matters, and the types of the organic covering agent.

The invention discloses a quick and reliable method for coupling the transmission power of a coaxial light transceiver; the method comprises the following steps: firstly, a coaxial coupling clamp similar to a fort and provided with coupling bolts is prepared; a semi-finished laser and a fiber are clamped in the central locating hole of the coaxial coupling clamp, the bolts are rotatably compressed along the clockwise direction, a pressing block is pushed in, and then the bolts are rotatably coupled along the clockwise direction, thus leading the bolts to be coaxially fixed; power is supplied to an exposed traction angle of the semi-finished laser, and the semi-finished optical fibers are connected to an optical power meter, and then fine adjustment of X axis and Y axis is respectively carried out to two groups of coupling bolts which respectively represent X axis and Y axis, optical power coupling is carried out, and the coupling bolts are fastened when the optical power is coupled to the maximum value. The method has the advantages of simpleness, easy operation, reliable connection, high yield and small clamp body; no change of relative position of the light transceiver in the transportation process, and no loss of light transmission power; low manufacture cost which is one fifteenth of that of the big clamp in the prior art or that of a method of dispensing for pre-fixing; and convenient dismantlement.

The invention provides a synthesis method of tin oxide nano-crystal which is wrapped by organic ligands. The method is that: tin source and organic wrapping agent are added into toluene; the mixture is heated, dissolved and added with water solution of alkaline matter, then sent into a reaction vessel at the temperature of 120-180 DEG C to react for 1-24 hours; the tine source is hydrolyzed; after nucleation and growing process, the tin oxide nano-crystal wrapped with organic ligands is prepared. The whole preparation method of the invention is characterized in that reaction condition is moderate, the operation is simple and the preparation period is short, thereby the preparation method can be easily put into mass production. In addition, the tin oxide nano-crystal with different sizes and shapes such as spherical shape and branch shape can be prepared by adjusting reaction time, temperature, alkaline amount, water amount and organic wrapping agent type; the size and shape of the synthesized tin oxide nano-crystal can also be controlled; the size distribution is narrow, and the nano-crystal can be dissolved into organic solvent with different heteropolarities through surface ligand exchange.

The invention relates to an online safety pre-warning method for a lithium-ion battery. The method comprises the following steps: determining an impact condition of the lithium-ion battery; determining a voltage change threshold of the battery; and carrying out online safety pre-warning of the battery. According to the method, the single battery with a potential safety hazard can be separated out by intercepting a voltage change value of the lithium-ion battery under a current or power impact condition within a certain period and carrying out transverse and longitudinal comparison on the numerical value, so that online safety pre-warning of the lithium-ion battery is achieved. Transverse comparison is carried out between different single batteries; and longitudinal comparison is numerical value comparison of various single batteries between different running time nodes.

The present invention relates to a wood-plastics composite material whose appearance is similar to that of wood and its preparation method. It is made up by using plant fibre powder and thermoplastic plastics as raw material, adding proper quantity of additive through the processes of uniformly mixing, extruding, plasticizing and moulding. It is characterized by that its surface possess the grain similar to wood grain.

The invention belongs to the field of chemical materials and provides alkyd resin which is produced by taking a 70wt% sorbitol water solution with low cost and pentaerythritol, which substitute for glycerol or partially substitute for pentaerythritol, as polyalcohol resources by adopting a fatty acid process. A production method of the alkyd resin is simple and feasible; raw materials are low in cost and easily obtained, so that the production cost can be effectively reduced; and the produced alkyd resin is excellent in paint production performance and can completely achieve the performances of alkyd resin which is produced by adopting glycerol and pentaerythritol as polyalcohol resources.

The invention discloses a low-temperature performance evaluation method for a lithium ion battery. The method is executed according to the following steps of: firstly, measuring a standard value upper limit according to various models of lithium ion batteries; then, measuring the internal resistance of a single to-be-measured lithium ion battery before and after formation; comparing the calculated internal resistance data with the determined lithium ion battery sorting standard value, if the internal resistance is less than the standard value, the battery is qualified, otherwise, the battery is unqualified; wherein the lithium ion battery sorting standard value is obtained by taking a middle distribution dense area of the measurement distribution result of the differences between the internal resistances before and after formation of various models of batteries as the standard value upper limit. The method of the invention is quick, simple and easy to execute, and provides accurate measurement result, so that the method is a measuring method having no influence on battery evaluation and battery sorting.

This invention discloses one method and device to test furnace high temperature inner wall crack, which comprises the following steps: a, firstly selecting multiple test points in tube outer wall for purification process; b, collecting tube inner wall micro crack point by point; c, sending the collected wave shape into display device and to process device; d, data process device uses software to compute out tube inner wall crack thickness.

The invention discloses a parking stall reserving and vehicle searching method in a parking lot. The parking stall reserving and vehicle searching method in a parking lot includes the following steps: 1) coding; 2) linking a parking stall reserving system for the parking lot through a client terminal by a user; 3) selecting a parking stall in the unoccupied state to reserve from the pictures of the parking lot through the client terminal by the user; 4) after success of reservation, starting navigation when a vehicle is driven to the entrance of the parking lot by the client terminal; 5) parking successfully by the user; 6) when the user wants to leave the parking lot and cannot find the vehicle, opening the client terminal to start vehicle search navigation to help the user to search the vehicle; 7) when the user gets on the vehicle and prepares to leave the parking lot, debooking the parking stall through the client terminal, and paving the parking fee; 8) driving the vehicle out of the parking lot within the required time, by the user; and 9) when the vehicle drives away from the parking lot, automatically recovering the parking stall into the unoccupied state by the parking stall reserving system of the parking lot. The parking stall reserving and vehicle searching method in a parking lot is simple and easy to implement, and can effectively solve the defects of the prior art, and is very suitable for implementation and popularization.

The invention discloses a preparation method of goat milk containing ACE (Angiotensin Converting Enzyme) inhibitory peptide based on Lactobacillus helveticus fermentation. The preparation method comprises the following steps of: vaccinating Lactobacillus helveticus in goat milk or goat milk reconstituted milk, and carrying out anaerobic fermentation at a temperature of 30-40 DEG C for 10-15 hours, so as to obtain fermented goat milk; sufficiently mixing 80-90 parts of the fermented goat milk, 5-10 parts of sucrose, 0.15-0.5 parts of a stabilizer and 5-30 parts of water and then cooling to a temperature below 10 DEG C, so as to obtain mixed fermented goat milk; and sealing the mixed fermented goat milk at a temperature of 2-5 DEG C, and maturating for 8-10 hours so as to obtain the goat milk containing the ACE inhibitory peptide. The prepared goat milk has nutritive values of goat yogurt and specific tastes, and further contains the ACE inhibitory peptide with higher inhibition rate, so that not only can the development and the utilization of the goat milk resources be prompted, but also the goat milk has positive effects on hypertension prevention and nutrition and health care of a patient suffering from hypertension.

The invention discloses a separation and enrichment determination method for Ir, Rh, Pt, Pd and Au in a secondary resource material. The method includes the following steps that 1, samples are dissolved, and after high-temperature firing carbon removal, a Na2O2+NaCO3 mixed fluxing agent is adopted for fusion in a muffle furnace of 750 DEG C; 2, a test solution is oxidized, an appropriate quantity of sodium chlorate solution is added in a dissolving solution, boiling is performed, and Ir in the solution is oxidized so that the valence state can be made stable; the solution is adjusted to be at the appropriate volume, and the volume concentration of hydrochloric acid reaches 50%; 3, tellurium coprecipitation separation is carried out; 4, determination is carried out, an inductively coupled plasma optical emission spectrometry (ICP-AES) is used for determining the content of the Ir, Rh, Pt, Pd and Au in the solution obtained in the third step at the same time. The accurate and fast separation and enrichment determination method is specifically used for the Ir, Rh, Pt, Pd and Au with the content scope being 0.001%-5% in the secondary resource material such as waste and metallurgical middle materials formed in the using process of various precious metal products. The method is also suitable for separation and enrichment determination of Ir, Rh, Pt, Pd and Au single elements in the secondary resource material.

The invention relates to an REVO measuring head A-axis zero error calibration method, belongs to the technical field of precision test and apparatuses, and provides an REVO measuring head A-axis zeroerror calibration method, which can be used in a non-orthogonal type three-coordinate measuring machine. The technical scheme is as follows: the method comprises the steps of: fixing a standard ball on the horizontally placed plate; adjusting the position of a probe corresponding to the standard ball, so that the probe is positioned at the position, where is 2 mm from the top of the standard ball;adjusting the A-axis angle and moving the Z axis of the measuring machine, so that the probe can detect the equator position of the standard ball; keeping the three main axes of the measuring machinestationary, detecting two symmetrical points of the standard ball, and recording the A-axis angle value of the detection point; and, calculating the A-axis angle difference value of two detection points, and repeating the calibration process till calibration precision requirements are satisfied. When the three main axes of the measuring machine are stationary, high-precision calibration of the A-axis zero error is realized; and thus, the method can be used for measurement.

The invention discloses a method of predicting fatigue life of a power transmission tower in cold areas and belongs to the technical field of power transmission towers. The method includes: determining a random wind load spectrum, determining a fatigue danger portion of the power transmission tower, performing dynamic analysis on the power transmission tower under wind vibration action, analyzing by a rain-flow counting method, determining an S-N curve at low temperature, and determining low-temperature fatigue life. The method has important theoretical and actual application values; by using the method to predict fatigue life of a power transmission tower in cold areas, it is possible to ensure safety, economy and reasonableness for a power transmission line of the power transmission tower in cold areas.

The invention relates to a preparation method of carbon quantum dots with blue-green fluorescence, which comprises the following specific steps: putting polyimide and water into a hydrothermal kettle, or putting polyimide, water and a passivator into a hydrothermal kettle; then, putting the hydrothermal kettle into a drying oven, and increasing the temperature to carry out a heating reaction; after the reaction is completed, stopping heating, cooling, and taking a solution out the hydrothermal kettle; and centrifugalizing, taking liquid supernatant, dialyzing the liquid supernatant by using a dialysis membrane, thus obtaining a carbon quantum dot aqueous solution. The method disclosed by the invention has the characteristics of mild reaction conditions, simpleness, and easiness for implementation. Prepared carbon quantum dots with blue-green fluorescence can stably emit blue-green fluorescence and the quantum yield is high.

The invention discloses a method for continuously preparing multilayer plates. The method comprises the following steps without being interrupted: (1) a material (a), (b) or (c) is pressed to form a sandwich layer, wherein the material (a) is resin and gridding cloth, the material (b) is resin, foaming agent, processing aid and gridding cloth, and the material (c) is non-woven cloth; (2) the sandwich layer advances with a certain velocity, and during the advancing process, the upper surface and the lower surface of the sandwich layer are respectively or simultaneously coated or rolled by the resin and the gridding cloth or are alternately coated or rolled by the resin and the gridding cloth time after time to obtain the multilayer plates. The method for preparing the polymer composite multilayer plates is simple to realize, and has high production efficiency without solvent pollution. By taking waste polymer materials as the raw materials, the invention reduces the cost, protects the environment and realizes the cyclic utilization of the raw materials.

A method for gauzing decoration on building colorful surface relates to building surface coating protection and maintenance technolgoy including: eliminating sundries on the surface to eradicate the raised par, smoothing it with 107 glue and concrete, brushing varnish, coating millpowder two times then smoothing to grind it with abrasive paper, to brush varnish again then to coat colorful paint not dried to stick gauze on it then again brush colorful paint twice. This invention fully utilzies the integrity of the combination of paint and gauze which can keep the painting surface smoothing and bridge for a long time.