192results about How to "The method is easy to operate" patented technology

The invention relates to a remote control method based on a bluetooth broadcast packet, which comprises the following steps: 1)using a remote controller at first time, employing a code matching method based on the bluetooth broadcast packet to match the remote controller with a bluetooth host terminal; 2) transmitting data to the host terminal by the remote controller, packaging data according to a format of bluetooth ADV_NON_CONN_IND packet, wherein each packet is transmitted for several times repeatedly for avoiding data packet dropout; and 3) processing data, and respectively performing corresponded treatment on different types of data to control the host terminal. According to the invention, the method has the advantages of simple operation, low cost and rapid matching, and can realize one-to-many control under special application scenes such as production line.

The invention relates to a vacuum perfusion forming method of a p-aramid fiber composite material workpiece. The vacuum perfusion forming method specifically comprises the following steps of: (1) cleaning a mold; (2) painting a releasing agent; (3) respectively preparing resin glue for the gel-coat layer, resin glue for a surface layer and resin glue for perfusion; (3) manufacturing the gel-coat layer; (5) manufacturing the surface layer; (6) manufacturing a reinforcing layer which comprises p-aramid fiber cloth; (7) laying a vacuum perfusion device and sealing; (8) carrying out vacuum perfusion; (9) curing the workpiece; (10) demolding; (11) connecting a reinforcing member and a connecting piece; and (12) post-processing. The p-aramid fiber composite material prepared by the vacuum perfusion forming method provided by the invention is simple in production method and can effectively increase the ultraviolet resistance performance of the p-aramid fiber composite material workpiece; and simultaneously, p-aramid fibers and resin have a good caking property so that the composite has stable and good performances.

The invention discloses a method for degrading aflatoxin, which uses electron beams to radiate a sample containing the aflatoxin to obtain the sample with reduced aflatoxin content. The method can directly radiate finished products such as agricultural products, food, and feed, has simple operation and obvious effects, and makes the degradation rate of aflatoxin B1 reach 71.51 percent.

The invention discloses a method for dyeing a cotton fabric with tea dye and finishing liquor used by the method. The method comprises the following process steps of (1) crushing tea leaves, and adding clean water to extract the tea dye; (2) preparing the finishing liquor from the following materials in parts by weight: 1-5 parts of chitosan powder, 20-25 parts of a glacial acetic acid solution with the concentration being 4%, and 1000 parts of water, namely firstly adding the glacial acetic acid solution with the concentration being 4% into the chitosan powder gradually, simultaneously stirring uniformly, adding water, and mixing uniformly to obtain the finishing liquor; (3) finishing the cotton fabric with the finishing liquor in an immersing and rolling method; and (4) dyeing the cotton fabric finished by the finishing liquor. The method disclosed by the invention has the advantages that not only can the dyeing depth and fastness of the dyed cotton fabric be improved, but also the antibacterial effect and the clean and environment-friendly effects can be achieved.

The invention discloses a network user identification authentication system, including the client computer, the dynamic password generator and the server, in which the said computer connects to the server through communication network, and the said dynamic password generator connects to the computer, and the said server has the dynamic password checking module. The invention also discloses a network user identification authentication method, including: firstly, the user registers, and then, the client processes login application, and the dynamic password generator generates dynamic password, and then the computer transmits the user identification and dynamic password to the server though communication network, and then, the dynamic password checking module of the server checks the dynamic password, thereby determining the legality of the login application. The authentication architecture of the system in the invention is simple and easy to operate, and it can make users easily login whether or not knowing the network operation, and greatly improve the system's security performance.

The invention discloses a compound oxygen reduction electro-catalyst of carbon nano materials modified by macrocyclic compound containing nitrogen and a preparation method thereof, wherein the catalyst is prepared by mixing the macrocyclic compound containing nitrogen and the carbon nano materials completely, and has excellent catalytic activity and stability in cyclic voltammetry. The peak potential of the catalyzing oxygen reduction reaction can reach -0.1V (vs. Ag / Agcl); the peak current density of the oxygen reduction can reach 3.4mA.cm<-2>; the catalyst has stable catalytic activity which is basically not attenuated after 10000 times of cyclic voltammetry; the current generated in the catalyzing oxygen reduction reaction is not affected by the additional organic micromolecules (such as glucose, methanol and formaldehyde) and carbon monoxide. The electro-catalyst has simple preparation process, low cost, and good catalytic activity, selectivity, mithridatism and stability, can be applied to biomembrane electrode reactors, biosensors, fuel cells and other fileds.

The invention relates to the electrolytic aluminum industry, in particular to an in-situ power-cut-free welding method for soft mother belts and an aluminum bus of the cathode of an aluminum electrolysis cell. The method comprises the following steps of 1 in-situ grinding, 2 in-situ fixing, 3 in-situ fusion, 4 pre-welding treatment, 5 preheating, 6 exothermic welding and 7 post-welding treatment. By means of the method, in-situ connection between the soft mother belts and the aluminum bus is directly completed through exothermic welding, the defect that the soft mother belts of a sheet type structure cannot be directly welded in a magnetic field is overcome, the economic benefits of an aluminum electrolysis enterprise are increased, and repairing of the soft mother belts for the aluminum electrolysis enterprise is realized. The operation can be completed under the condition that serial aluminum electrolysis cells are powered all the time, and the repairing purpose can be achieved on the promise of not affecting production of the serial aluminum electrolysis cells. The method is suitable for welding of the soft mother belts and the aluminum bus in various cell types, and is good in universality, easy to operate and high in welding repair efficiency.

The invention discloses a device and a method for preparing a high-purity boronic acid by means of ion exchange and recrystallization. The device comprises an ion exchange column and a cooling groove, wherein the ion exchange column comprises an inner cavity and a heating device; and cation exchange resin particles are placed into the inner cavity. The method is as follows: a boronic acid solution is added into the ion exchange column and metallic ions in the boronic acid solution are removed; and the boronic acid solution after ion exchange is cooled through the cooling groove and purified by means of recrystallization. The metallic ions in the boronic acid solution are removed by utilizing the strongly acidic cation exchange resin and the boronic acid and is purified through the cooling groove by means of the recrystallization, so that the device has a simple structure; the method is convenient to operate; purification and quantitative control are convenient; and the boronic acid is purified to have a high purity of more than 99.9999 percent by a guaranteed reagent.

The invention discloses a longitudinal temperature gradient solidification-purification method and a device for metallic gallium. The device comprises three parts, namely a growth zone, a shouldering zone and a seed crystal zone, wherein the growth zone is a segment of cylindrical pipe barrel; the shouldering zone is an inverse frustum pipe barrel connected with the lower end of the growth zone; and the seed crystal zone is a cylindrical blind pipe connected with the lower end of the shouldering zone. The method comprises the following steps of putting metallic gallium seed crystal into the seed crystal zone, injecting liquid metallic gallium into the purification device and cooling the seed crystal zone. The method purifies the metallic gallium further to the extremely high purity of 6N or 7N on the basis of 4N. The invention has the advantages that the device is simple in mechanism; the method is convenient to operate; and purification quantification is convenient to control.

The invention provides a method for culturing umbilical cord mesenchymal stem cells in a separated mode from umbilical cord outer layer amnion tissue. The method includes the steps that umbilical cord tissue of a healthy newborn is used, washed, disinfected and mechanically cut into pieces to separate an outer layer amnion, and the outer layer amnion is cultured in a suspension mode with a serum-free culture medium after being treated with erythrocyte lysate; medium change is carried out every three to five days, after the attachment rate in a plate reaches 30-70%, trypsinization is used, cells are collected centrifugally for passage amplification, and confluence is carried out when the cell confluence rate reaches 80-90% to obtain the high-purity umbilical cord mesenchymal stem cells.

The invention relates to a method for detecting the weight-average molecular weight and molecular weight distribution coefficient of sodium hyaluronate in medical sodium hyaluronate gel. The method comprises: precisely measuring a proper amount of a medicinal preparation solution, adding a mobile phase to dilute the solution to a to-be-tested sample liquid with the required concentration, performing uniform shaking, performing sample injection, and recording a chromatogram; taking a sodium polystyrenesulfonate reference substance, performing measuring according to the method above, drawing a calibration curve with a GPC software, and using a universal calibration method to obtain weight-average molecular weight and molecular weight distribution coefficient. A laser scattering and gel permeation chromatography combination method is used for detecting the weight-average molecular weight and molecular weight distribution coefficient of sodium hyaluronate in medical sodium hyaluronate gel in the professional standard. The combination method is hard to popularize, for the multi-angle laser light scattering spectrometer is expensive. According to the method, the used device is good in universality, the measurement cost is low, and the result is accurate, reliable and stable.

The invention relates to the technical field of extraction of effective components from plants, and specifically relates to a preparation method for polyphenol monomers from gnaphlium affine. The preparation method comprises the steps of (1) preparing a column product of the gnaphlium affine; (2) loading a sample for elution; and (3) carrying out structure determination. Six compounds are prepared and separated from the gnaphlium affine by using HSCCC combined with preparative HPLC technology. The method is simple, efficient and non-toxic, and is suitable for large-scale preparation of the compounds. Five compounds are identified. Meanwhile, an inhibition effect of the compounds on alpha-glucosidase is studied; and a foundation is laid for pharmacological research and quality control of the gnaphlium affine. The method can extract the polyphenol monomers from the gnaphlium affine rapidly, and is simple to operate. The prepared polyphenol monomers have high purity.

The invention discloses a method for transplanting a silicon nanowire array and preparing a simple device thereof. A multihole silver film prepared on a clean silicon wafer is utilized to act as catalytic metal; the silicon nanowire array is prepared through etching the multihole silver film in hydrofluoric acid or hydrogen peroxide; a silicon-silicon oxide core-shell structure is formed by oxidizing the silicon nanowire array in high-temperature water vapors; the silicon-silicon oxide core-shell structure is placed in a high-temperature aqueous solution of ammonia, and a silicon nanowire array structure detached from a silicon lining is prepared through silicon oxide blocking and silver assisted ammonia water etching. Transplantation of the nanowire array is realized by utilizing a target substrate whose surface is coated by an adhesive material; or an insulating material is used to fix and support the silicon nanowire array and acts as an intermediate insulating layer, the silicon nanowire array is transplanted to a flexible substrate whose surface is coated by a conducting adhesive material, and another layer of a conductive material is covered so as to prepare a simple and flexible breakover circuit device with good ohmic contact. The method disclosed by the invention is simple to operate and low in cost, and can be applied to mass production.

The invention discloses a Pseudomonas stutzeri and application thereof to water body dephosphorization. The Pseudomonas stutzeri YG-26 provided by the invention has a preservation number of CGMCC No.4093. An immobilized bacterium can be obtained by using the YG-26 embedded by sodium alginate and polyvinyl alcohol. The strain YG-26 and the immobilized bacterium thereof can be used for maximumly removing phosphorus in sewage so as to effectively prevent and control the occurrence of water body nutrition enrichment. By using the strain or the immobilized bacterium provided by the invention to perform water body treatment, the removal ratio is high, the method is simple in operation, and the cost is low along with economical efficiency and environmental protection, so the strain or the immobilized bacterium can be widely applied to further treatment of the sewage, and have significant economic, environmental and social benefits.

The invention discloses a preparation method and application of functionalized column [5] arene trimer. The functionalized column [5] arene trimer is well synergistic in host-guest interaction, the preparation method of the functionalized column [5] arene trimer is a chemical synthetic process, and a product is obtained by subjecting p-methoxybenzene and paraformaldehyde as starting materials to catalytic and synthetic reactions. The materials of the product are simple and easily obtainable, the method is simple to perform, and reaction conditions are mild. In cationic molecular recognition for linear diamine hydrochlorides and branched triamine hydrochlorides, it is possible for significant charge transfer to occur, very characteristic absorption peaks are shown in ultraviolet, and the trimer is applicable to ultraviolet detection.

A nucleotide sequence for inspecting HIV virus rapidly, its method and in-vitro diagnostic reagent knit are disclosed. It's cheap, simple and accurate and has wide inspection range, and it can be used to inspect A-H sub-family and O-family of M family.

The present invention discloses a method and an apparatus for preparing high-purity gallium. According to the method, liquid-state high-purity gallium is placed on the bottom portion of a container and is cooled as a seed crystal, the liquid-state metal gallium is poured into the cooling container to cool and crystallize, a thermal source coil is opened after complete crystallization, the temperature and the movement speed of the thermal source coil are controlled, the thermal source coil moves from bottom to top, the stable solid-liquid interface during the solidification process is ensured, the solidification interception ratio is 70-90%, and the metal gallium can be purified to achieve more than or equal to 6N. The apparatus comprises the cooling container, a constant temperature cold source, the thermal source coil and a control device, wherein the bottom portion of the cooling container is provided with the constant temperature cold source, the upper portion of the cooling container is provided with a dust preventing cover, the thermal source coil sleeves on the outer side of the cooling container, and the thermal source coil is connected with the control device through a conducting wire so as to make the temperature and the movement speed of the thermal source coil be controlled by the control device. According to the present invention, characteristics of simple apparatus mechanism, easy method operation, convenient specification quantifying, good product stability and the like are provided.

The invention relates to the field of environmental function adsorbents, in particular to a method for preparing a heavy metal ion imprinting material with a microwave-assisted inverse emulsion polymerization method and an application of the heavy metal ion imprinting material. The method includes the steps that heavy metal ions serve as imprinting ions, cyclodextrin matter and acrylamide matter are used as functional monometers, the functional monometers are polymerized in a microwave-assisted mode with the inverse emulsion method, and the imprinting material with the small and even particle size is prepared. The method for preparing the heavy metal ion imprinting material is easy to operate, and the imprinting material has the advantages of being small in particle size, large in specific surface area, high in specific adsorption capacity and the like.

The invention discloses an active carbon propane adsorbent as well as a preparation method and application thereof. The preparation method of the active carbon propane adsorbent comprises the following steps: immersing cocoanut active charcoal in 5-22mol / L of hydrofluoric acid solution, putting the solution in a hydrothermal reaction kettle, carrying out hydrothermal treatment for 1-7 days at the temperatures of 120-180 DEG C, and washing and drying to obtain the active carbon propane adsorbent. As a purification material, the active carbon propane adsorbent has the characteristics of relatively high purification efficiency with low-concentration HC (Hydrocarbon), relatively low cost, simple preparation process and the like; the highest propane purification efficiency of the material reaches more than 99% at the normal temperature and pressure under the conditions that the propane concentration is 20ppm and the space velocity is 50000mL / (g.h); the adsorption capacity can reach 2.0mlC3H8 / gAC.

The invention relates to a thermal polymerization preparation method of a manganides solid solution positive material. The thermal polymerization preparation method comprises the following steps of: preparing a mixed solution comprising lithium salt, nickel salt and manganese salt according to a general form stoichiometric proportion; adding a thermal polymerization precursor solution to the mixed solution; stirring the mixed solution to polymerize to form a gelatinous material at the temperature of between 80 DEC and 120 DEC and pH of between 4 and 7; drying the obtained gelatinous material in vacuum at the temperature of between 140 DEC and 170 DEC to obtain a resinoid product; pre-burning the resinoid product for 5 to 20 hours at the temperature of between 400 DEC and 700 DEC; carrying out heat preserving on the resinoid product for 5 to 20 hours at the temperature of between 750 DEC and 1000 DEC; and slowly cooling the product to a room temperature after calcination to obtain a finished product. According to the thermal polymerization preparation method, the raw material component blending can reach to molecule degree level, larger nonuniformity of microcosmic material matching ratios by blending with a mechanical method can be avoided; the thermal polymerization preparation method is easy and simple to operate; and the synthetic product is fine and uniform in grain diameter, high in purity, higher in discharge ratio capacity, excellent in circulating performance and high temperature performance and remarkable in magnification performance and can serve as a high power lithium ion battery positive material.

The invention relates to a method for extracting, separating and purifying three kinds of coumarin from dahurian angelica root. The method is characterized by using the medicinal material dahurian angelica root as a raw material and comprises the following steps: (1) extraction of coumarin in dahurian angelica root; (2) separation analysis of coumarin in dahurian angelica root; (3) separation and purification of coumarin in dahurian angelica root; (4) compound purity detection and structure identification. The method has the advantages that three high-purity components are obtained by using semi-preparative high performance liquid chromatography for separation and purification and using methanol-water as a mobile phase and are identified respectively to be imperatorin, oxidized imperatorin and isoimperatorin; the process is environment-friendly in course, does not have severe harm to the environment and is low in comprehensive cost.

The invention discloses a method for preparing artemisinic acid, which is convenient to operate and has little pollution. The method is as follows: 1) crushing dry artemisia annua to 20-80 mesh crumbs, and placing the crumbs in a CO2 supercritical extracting tank which is filled with liquid CO2 for extraction, wherein the flow rate is 1-5ml / min / g raw material, the extraction temperature is 30-50DEG C, the pressure is 15-30Mpa, and the extraction time is 1-3h, and the extract is obtained after dissolving out; 2) dissolving the extract with a sodium bicarbonate solution, adding petroleum ether to the solution after filtration, adjusting to ph3-5 with hydrochloric acid solution, collecting a petroleum ether extraction liquid, decolorizing the extraction liquid with activated carbon, concentrating the extraction liquid to a small volume and crystallizing, and re-crystalizing crystals with anhydrous methanol to obtain the artemisinic acid. The artemisinic acid sample produced with the method has the advantages of high purity level, the industrialized production can be realized easily.

The invention discloses a graphene loaded cerium catalyst and a preparation method thereof, relating to the technical field of catalysts. The preparation method of the graphene loaded cerium catalyst comprises the following steps: mixing the prepared cerium oxide suspension and graphene oxide suspension, heating to 160-180 DEG C, and performing hydrothermal reaction for 6-10h; removing the supernatant to obtain solid sediment; and drying. The product obtained by the preparation method has perfect catalytic activity against heterocyclic organic compounds; and the method is easy to operate and suitable for industrial application. The graphene loaded cerium catalyst is prepared by the method and comprises active catalytic components, namely cerium dioxide and a graphene carrier and has fairly high catalytic activity in catalyzing heterocyclic organic compounds.

The invention discloses a method of increasing the ibuprofen chiral split reaction speed catalyzed by enzyme in ion liquid, which is characterized in that: nanophase carrier immobilized enzyme is dispersed in the ion liquid with ibuprofen and 1-propanol, and the solution is stirred to process reaction for 24 to 48 hours at 25 to 35 degree centigrade; wherein, the molar ratio of ibuprofen and 1-propanol is 1 to 6 : 20, and the weight bulk ratio of the ibuprofen and the ion liquid is 1mg : 2 to 4ml, and the weight bulk ratio of the nanophase carrier immobilized enzyme and the ion liquid is 1g : 4 to 10ml. The method of increasing the ibuprofen chiral split reaction speed catalyzed by enzyme in ion liquid has the advantages of easy method and operation, mass production, being green chemical for enzyme and the ion liquid and being without environment pollution for the reaction of preparing chiral ibuprofen.

The invention discloses a high-adhesiveness durable electrode coating and a preparation method thereof. The electrode coating is prepared by adding a coordination compound into an iridium-tantalum coating, wherein the coordinator is one, two or three of alkyl group, amino group and nitro-group, and the coordinating element is one of molybdenum (Mo), tin (Sn), platinum (Pt), cobalt (Co), manganese (Mn) and titanium (Ti). The product disclosed by the invention uses the coating obtained from the organic coordination compound containing the elements, thus, can well resist acid, erosion of massive gas and impact of high current density, and has favorable cohesive property with the substrate; the service life of the electrode is prolonged; and the method is simple to operate, does not need complicated substrate pretreatment technology, and does not need a complicated middle layer or the like.

The invention relates to a method of producing a microarray aptamer sensor used for antibiotic residue detection. A microarray electrode aptamer sensor has the advantages of being higher in sensitivity and wider in linear response range. The microarray aptamer sensor provided by the invention is used for quick detection of tetracycline residues in milk, and the detection includes the following steps: firstly cleaning a microarray electrode with alkaline and acid alternately, modifying the microarray electrode using ionic liquid and ferroferric oxide, fixing a tetracycline aptamer on the modified microarray electrode to obtain the interdigital microarray aptamer sensor, and then carrying out in-situ quick detection of the tetracycline residues in milk. The sensor provided by the invention is high in sensitivity, stability and specificity, and good in regeneration capability; the recovery rate meets requirements; therefore, the sensor is quite suitable for occasions of antibiotic residue in-situ quick detection.

The invention provides a method for determining the basic metallurgical performance of iron powdered ore. A test process comprises the following steps of: selecting a blocky mixture of the iron powdered ore and auxiliary materials, placing the blocky mixture in a horizontal heating furnace, and starting a computer and a video camera to start acquiring an image; raising temperature according to a set program heating system, wherein a certain amount of mixture of CO, CO2, O2, N2 and H2 can be introduced in a heating process, and the proportion and flow of each gas can be controlled through a program; and calculating metallurgical performance indexes of the iron powdered ore according to change rates of shape and area of the blocky mixture of the iron powdered ore, which are shot by the video camera. Equipment is simple, the method is easy to operate, the computer is used for real-time control, the high-temperature metallurgical performance indexes of the iron powdered ore under a specific temperature control system can be calculated, and errors caused by manual operation when the conventional method is used for measuring the metallurgical performance of the iron powdered ore can be reduced.

The invention discloses a method for removing cyanobacterial bloom, comprising the following steps of: drawing algae-containing water into a curved water channel; breaking bladder of algae in the algae-containing water flowing through the curved water channel by the utilization of supersonic wave so as to make the algae sink and simultaneously breaking the cell wall of the algae in the algae-containing water by the utilization of supersonic wave; inputting the algae-containing water which has undergone ultrasonic treatment during the step 2 into a flocculation reaction tank and carrying out flocculation treatment by the use of a safe flocculating agent; inputting the algae-containing water which has undergone flocculation treatment during the step 3 into a flocculation settler for settlement so as to obtain a sediment and a supernatant; and discharging the supernatant. The invention also discloses an apparatus for removing cyanobacterial bloom. The apparatus contains a water pumping device, an ultrasonic treatment pool, a flocculation stirring pool, a settling basin and a power supply device. The method provided by the invention is easy to operate. The apparatus provided by the invention can be used to remove cyanobacterial bloom more thoroughly and efficiently, effectively purify the algae-containing water and effectively minimize nutrients in water, and can operate without maintenance for a long time.

The invention relates to a method for simultaneously determining tryptophan, kynurenine and kynurenicacid by using high performance liquid chromatography-fluorescence method, which comprises the following steps: a. Hypersil C18 chromatographic column (250x4.6mm, particle size of 7 Mum) is adopted; b. each liter mobile phase contains 0.2 mol of zinc acetate, 8.3mol of acetic acid and 2.5v / v% of acetonitrile; c. flow velocity is 1.5ml / mim, sample size is 20 Mul, column temperature is 25 DEG C; and d. adjustable wavelength is set under the following conditions: at 0-11min, excitation wavelength is 365nm, emission wavelength is 480nm; at 11-15.5 min, excitation wavelength is 344nm, emission wavelength is 404nm; and at 5-20min, excitation wavelength is 254nm, and emission wavelength is 404nm. The method has simple method, quick separation, no derivation pre-column and post-column, high sensitivity and real and accurate result, and can simultaneously determine tryptophan, kynurenine and kynurenicacid.

The invention discloses a fermentation preparation method of monascus pigment with high color value and high biological safety. The fermentation preparation method is characterized in that a liquid-state fermentation culture medium is prepared by adopting soluble starch, sulfate and the like as raw materials, and a silica gel column chromatography is combined on the basis of liquid-state fermentation to remove citrinin in monascus-pigment fermented liquid. The fermentation preparation method disclosed by the invention has the advantages that the yield of the monascus pigment can be increased, and meanwhile the citrinin can be effectively removed, so that foundation is laid for wider application of the monascus pigment in the food industry.