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 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 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 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.

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 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 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 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.