43results about How to "Simple and efficient operation" patented technology

The invention discloses a preparation method of an air-entraining ester polycarboxylate superplasticizer. The preparation method comprises the following steps: (1) preparing an esterification product; (2) copolymerization reaction; and (3) neutralization reaction. According to the preparation method, the esterification product is prepared by esterification of coco fatty acid diethanolamide and unsaturated acid, the preparation method has the advantages of low cost and simplicity and convenience in operation, and the prepared esterification product participates in the next copolymerization reaction, so that a main chain of the polycarboxylate superplasticizer has hydrophilic groups such as amide and the like; the prepared polycarboxylate superplasticizer has good air entraining and foam stabilizing properties, and the workability and the strength of concrete are improved.

The embodiment of the invention provides a voice training method and device applied to an artificial intelligence system. The method comprises the steps: obtaining the current context information whenthe artificial intelligence system obtains voice data; acquiring an audio waveform corresponding to the voice data according to the context information; judging whether the audio waveform is a presetaudio waveform or not; If the audio waveform is a preset audio waveform, performing voice training by adopting the audio data. The embodiment of the invention provides a voice training method. Various language features and different voice data can be extracted from the voice data; different voice data or voice features are mixed with preset voice data; according to the method, training is carriedout after recognition, so that the recognition capability of the artificial intelligence system can be improved, the matching and recognition accuracy of the artificial intelligence system is also improved, the instruction of the user can be accurately recognized, the use experience of the user is improved, the calculated amount in the recognition process is small. The system power consumption isalso reduced.

The invention discloses a comprehensive utilization process for extracting calcium ions from South China Sea calcareous sands and treating algae sewage. The comprehensive utilization process comprises the following steps: weighing the South China Sea calcareous sands, feeding into a stone crusher P-5, and mechanically crushing to form small-particle-size particles; feeding diluted hydrochloric acid and the crushed South China Sea calcareous sands into a calcium ion extraction reactor P-1 to react to generate a calcium chloride solution, CO2 gas and water; carrying out primary separation on a reaction mixture through a sedimentation tank P-2, refluxing unreacted South China Sea calcareous sands to P-1, carrying out secondary reaction to generate a calcium chloride solution, and collecting to obtain a final extraction product calcium chloride solution; feeding the remaining mixture into a microfiltration system P-3, separating and purifying, and reacting a product solution in an acid-base neutralization reactor P-6; and introducing CO2 gas into a runway type algae reactor P-4, and purifying domestic sewage through autotrophy and heterotrophy growth. The calcium carbonate capable of being used for biological cement reinforcement is higher in crystal form strength and more uniform in distribution; and zero emission, economy and environmental protection are realized.

The invention discloses a tyrosinase fluorescent biosensor and an atrazine detection method thereof. The tyrosinase fluorescent biosensor is composed of nitrogen-doped graphene quantum dots, tyrosinase and dopamine, wherein the nitrogen-doped graphene quantum dot is used as a fluorescent probe; and the dopamine is used as a catalytic substrate. The tyrosinase fluorescent biosensor is adopted to becombined to a fluorescence spectrophotometer for rapid and sensitive quantitative analysis on atrazine. The method combines the tyrosinase fluorescent biosensor with fluorescence spectrometry for thefirst time for atrazine detection. Compared with the traditional chromatographic analysis method, the method disclosed in the ivnention uses a fluorescent spectrometer with relatively low cost, relatively simple operation and miniaturization potential for rapid and sensitive quantitative detection on atrazine.

The invention relates to the technical field of water seepage prevention, in particular to a disposable toe cap water seepage prevention patch which comprises a first layer and a second layer. The lower surface of the first layer is coated with an adhesive layer, and the adhesive layer is detachably bonded with the upper surface of the second layer; two parting lines are symmetrically arranged onthe first layer; the first layer is cut into a left patch wing, a right patch wing and a top patch by the two cutting lines; and the shape and the size of the top sticker are matched with those of thesurface of the toe cap. The toe cap can be waterproof, and operation is easy and convenient.

The invention relates to a five-prevention interlocking mechanism, which comprises a lower door ground interlocking unit and a load isolation and ground isolation interlocking unit. The lower door ground interlocking unit consists of a door hanging arm plate, a lower door interlocking connection pull rod, an interlocking connector, a crank arm and a lower door interlocking shaft shaft, wherein the door hanging arm plate is connected with the lower end of the lower door interlocking connection pull rod, the upper end of the lower door interlocking connection pull rod is connected with the interlocking connector, the interlocking connector is connected with one end of the crank arm and the other end of the crank arm is connected with the lower door interlocking half shaft. A ground baffle which is arranged in the front of a ground operating shaft is locked or unlocked under the situation that a lower door is not hung or hung on the door hanging arm plate to control the opening/closing of a ground switch and the opened/locked state of the lower door. The load isolation and ground isolation interlocking unit consists of an isolation indicating wheel, a ground indicating wheel, a cam and a camshaft. After an isolating switch and the ground switch are closed, the ground baffle and an isolating baffle are respectively locked in the front of the ground operating shaft and an isolation operating shaft to prevent the ground switch and the isolating switch from being mistakenly operated. The five-prevention interlocking mechanism has the advantages of small size, convenience in installation, simplicity and convenience in operation and high safety and reliability.

The invention discloses a method and special kit for detection of a CNV (copy number variations) label of a cattle VAMP7 gene. The method comprises the steps: adopting the whole genome DNA of cattle as a template, performing amplification on a partial fragment of the CNV region of the cattle VAMP7 gene and a partial fragment of a reference gene BTF3 separately through a real-time fluorescence quantitative PCR, and dividing the quantitative results into an insertion type, a deletion type and a normal type based on 2 * 2<-triangle triangle Ct> so as to identify the type of the copy number variations (CNV) of the cattle VAMP7 gene. It is shown through correlation analysis of production data of Yunling cattle, Xianan cattle, Pinan cattle and Jiaxian red cattle showed that the height at hip cross of individuals of the normal type is significantly higher than that of individuals of the insertion type and deletion type. Through detection of the CNV label closely related to the growth traits of Yunling cattle at the DNA level, the method can be applied to quick establishment of dominant populations of genetic resources of Yunling cattle and other local cattle varieties, molecular marker-assisted selective breeding of cattle is quickened, and the method is simple and fast, and has easy promotion and application.

The invention discloses a cloud technology-based voice recognition and intelligent black broadcast identification method, which comprises the following implementation steps: 1, demodulating a signal which is artificially identified as black broadcast or a previously stored signal, and sending the demodulated signal to a cloud for voice recognition to obtain a large number of black broadcast audio-to-text data samples; 2, carrying out unsupervised learning and training on the known black broadcast character data sample by adopting DNN, and extracting black broadcast characteristic keywords to form a keyword library; 3, sending the demodulated broadcast audio signal to a cloud for speech recognition to obtain broadcast audio-to-text content; and 4, carrying out similarity matching on the text content and the keyword library to obtain a similarity matching result. The broadcast signal is subjected to voice recognition through the cloud technology, operation is easy and convenient, and extra cost is not needed; and the DNN is adopted to carry out unsupervised learning and training on the black broadcast characteristic keywords, so that the recognition efficiency and the recognition accuracy are improved.

The invention discloses a method for maintaining bearings of crane span structures of cutter suction dredgers. The method comprises the following steps: mounting a bearing maintaining device (4) on anoriginal reamer crane span structure (3), wherein the bearing maintaining device (4) has a cylindrical structure, can support the reamer crane span structure (3) and can serve as a rolling shaft forlongitudinal rolling of the reamer crane span structure (3), the mounting position of the bearing maintaining device (4) is close to a bearing (5), and the bearing maintaining device (4) can stretch out or retract in relative to the reamer crane span structure (3); and calculating the weight of the reamer crane span structure (3), determining the mounting position of the bearing maintaining device(4), calculating the size of the bearing maintaining device (4), mounting a stopping block (9) on a main hull deck (8) as an accurate limiter for the longitudinal rolling distance of the reamer cranespan structure (3) so as to ensure that the bearing (5) can smoothly slip out from a bearing block upwards obliquely at an angle of 30 degrees and to maintain or change the bearing (5). The method for maintaining bearings of crane span structures of cutter suction dredgers has the beneficial effects that when required to be repaired or changed, the bearing does not need to be dragged to a repairsite with the aid of external force or a floating crane, but the bearing can be repaired or changed effectively and rapidly at low cost.

The invention discloses a testis organoid as well as a construction method and application thereof. The construction method of the testis organoid comprises the following steps: (1) resuspending testis cells by using a polymeric sphere culture solution, and culturing the obtained testis cell resuspension solution at 34-37 DEG C for 40-72 hours to obtain the polymeric spheres of polymerized testis cells; (2) placing the polymeric spheres obtained in the step (1) on an agar block, adding a spermatogonial stem cell culture solution, and culturing at 34-37 DEG C for 4-6 days; and (3) removing the spermatogonial stem cell culture solution, adding a testis differentiation solution, and culturing at 34-37 DEG C for 18-25 days. The testis organoid obtained by the construction method is similar to an in-vivo testis, and various germ cells (spermatogonial stem cells and spermatoblasts) and somatic cells exist in the testis organoid; and by adopting the construction method provided by the invention, functional haploid cells can be obtained in vitro.

The invention discloses a drinking cup. The drinking cup comprises a cup body, a cup cover and a cup bottom, wherein the cup body is provided with an inner container and an outer container; an interlayer is arranged between the inner container and the outer container and can be filled with a solution; the solution can be supersaturated potassium nitrate or sucrose; the inner container is further provided with a temperature-sensing color-changeable strip; the temperature-sensing color-changeable strip can detect the temperatures of both the inner container and the interlayer; the cup body is provided with two cup openings which are connected with the cup cover and the cup bottom respectively; the cup body is further provided with a protective sleeve; the protective sleeve is connected with the cup body; the protective sleeve is provided with slip-proof grains; the slip-proof grains consist of uneven geometrical structures or rings. The drinking cup does not scald hands, is convenient to carry about and beautiful in appearance, and is suitable for the elderly, middle-aged people, school students, infants and young children, white-collar workers and ordinary people.

The invention provides an immunity magnetic bead test strip for testing tumor marker CA72-4 and a preparing method thereof. The immunity magnetic bead test strip comprises a sample pad, a connecting pad, a nitrocellulose film, a water absorbing pad and a backing board. The sample pad, the connecting pad, the nitrocellulose film and the water absorbing pad are stacked in order on the backing board. The stacked parts along the length of the backing board are 0.5 to 2 mm in length. An immunochromatographic method for use is a double-antibody sandwich method; two antibodies are an anti-CA72-4 monoclonal antibody and anti-CA72-4 monoclonal antibody B72.3. The preparing method mainly relates to the preparation of nano magnetic bead probes. After the immunochromatography with the strip, a magnetic intensity tester is used to analyze and acquire CA72-4 quantitative results; the preparing method is simple and fast and is higher in sensitivity and specificity.

The invention belongs to the application fields of self-cleaning and waterproofing and the like, and particularly relates to a super-hydrophobic coating containing candle soot and the preparation method of the super-hydrophobic coating. Compared with the prior art, the method disclosed by the invention uses candle soot to manufacture roughness on the surfaces of glass, steel or ceramic base materials; the method is simple, no special equipment is needed, the operation is simple, convenient and fast; a large number of super-hydrophobic materials can be manufactured in a short time; the carbon which is not burned completely forms spinous bulges on the base material automatically, so that enough roughness is provided for the material, and the enough roughness is in favor of achieving super-hydrophobicity; perfluorodecyltrichlorosilane is deposited, in vapor manner, on the bulges and condensed into chemical bonds to fix the carbons which are only physically connected together, so that the durability is greatly enhanced; meanwhile, a part of the perfluorodecyltrichlorosilane permeates a loose candle soot layer to contact with the base material, so that the whole coating is firmer; the coating is applicable to a plurality of base materials and wide in application.

The invention relates to a rare earth oxide feeding control method for a rare earth electrolytic bath. According to the method, effect interval time is set according to the expected effect coefficient, and an automatic feeding device is used for carrying out feeding quantitatively at a certain time intervals within the effect interval time. Corresponding coping modes are adopted according to the fact whether the anode effect occurs or not or anode effect prediction. According to the method, the concentration of rare earth oxide in the rare earth electrolytic bath is controlled within the target range, the situation that the content of the rear earth oxide in the electrolytic bath is too high or too low is avoided, and the method is beneficial for achieving stable, efficient, low-voltage and low-power-consumption operation of the rear earth electrolytic bath. Meanwhile, automatic feeding of the rare earth electrolytic bath is further achieved, operation is simple, and labor intensity of workers is relieved.

The invention discloses a method for breeding, culturing and preserving paratylenchus by using carrot callus, belonging to the field of plant-parasitic nematode culture. The method comprises the following steps of: (1) under a sterile condition, soaking carrots with alcohol, scorching, peeling and slicing the carrots, putting carrot slices into a sterilized culture dish, sealing an opening of the sterilized culture dish, putting into a culture box, and culturing till the carrot slices grow callus; (2) sterilizing the paratylenchus with a streptomycin sulfate solution, centrifuging and collecting, eluting with sterile water, centrifuging and collecting again, preparing a paratylenchus suspension with sterile water, and dripping the suspension on the carrotcallus; and (3) putting the carrot callus inoculated with the paratylenchus into the culture box, and culturing. In the method, a culture medium is not required for culturing, so that the operation is simple and convenient; and sterilization of the streptomycin sulfate solution does not affect the activity of the paratylenchus, so that the aim of breading the paratylenchus simply, efficiently and largely is achieved, the paratylenchus can be preserved for a long time, and parasitism and pathogenicity of the paratylenchus on a plant are kept.

The invention relates to a substrate assembling device for sticking a substrate and a metal casing in micro-electronic products. A metal spring clamp is formed by a flat pressing plate (1), a pressing plate (2), a coil spring (3) and a connecting shaft (4). Two metal pressing feet (2b) are arranged on the inner lateral side of a clamp head (2a) on one side of the metal spring clamp. During use, the metal pressing feet (2b) extend into a gap between the substrate (6) on the lower portion and a surface component (7), and the substrate (6) and the base of the metal casing (5) are clamped together stably through pressure of two sides. The substrate assembling device has the remarkable advantages of being simple and efficient in substrate assembling, highly reliable, low in cost and wide in application.

The invention provides an extraction method for high-purity and high-extraction-rate pyrethrin. The extraction method comprises the following steps: (1) drying pyrethrum petals at the temperature of 100 to 110 DEG C for 20 to 30 minutes, smashing the petals, and screening the smashed petals with a screen of 80 to 100 meshes to obtain pyrethrum powder; (2) placing the pyrethrum powder, cellulase and a mixed solvent into a soxhlet extractor, heating the soxhlet extractor until reflux occurs, irradiating for 40 to 60 minutes with ultraviolet rays, continuously refluxing for 4 to 6 hours, and taking an extracting solution for later use, wherein the mixed solvent is prepared from ethyl acetate and normal octane according to a mass ratio of 1 to (0.5 to 0.8); (3) distilling the extracting solution, respectively collecting fractions at the temperature of 75 to 80 DEG C and the temperature of 122 to 130 DEG C, and collecting remnants which are the required pyrethrin. By the adoption of the ultraviolet rays assisting in extraction to extract the pyrethrin, the extraction method has the advantages of high efficiency, conventional equipment, simplicity and convenience for operation, high product purity and high extraction rate, and is suitable for large-scale production.

The invention provides a preparation method of phenanthrenequinone and derivatives of the phenanthrenequinone. O-aryl acetophenone compounds shown as the formula (I) are used as raw materials; in an organic solvent, reaction is performed for 12 to 36h at 60 to 100 DEG C in a pressure-proof sealing tube under the effects of catalysts and oxidizing agents; obtained reaction liquid is separated and purified to prepare the phenanthrenequinone and derivatives of the derivatives shown as the formula (II); the catalysts are selenium and selenium oxide. The preparation method has the advantages that the raw materials are simple and can be easily obtained; the reaction conditions are mild; the functional group tolerance is good; the operation is simple and achieves an environment-friendly effect; anovel method for synthetizing the phenanthrenequinone containing various substituent groups is provided.

The invention discloses a method for synchronously determining contents of tetravalent vanadium and pentavalent vanadium in a culture medium in situ; and the method is used for researching the strength of the oxidization effect of microorganisms to the tetravalent vanadium and the reduction effect to the pentavalent vanadium in the beef extract peptone fluid culture medium. The method builds a chromogenic reaction system (comprising reaction reagent amount, adding sequence, chromogenic time and other conditions) through regulating the formula of the culture medium, and compares the changes of absorbance curves of the culture medium before and after the microorganism effects by using the spectrophotometry to achieve the synchronous in-situ determination of the tetravalent vanadium and the pentavalent vanadium in the culture medium. The method has the characteristics of low equipment requirements, simple operation, accurate determination, good reproducibility and the like, and is specifically suitable for qualitatively and quantitatively researching the redox capcity of the microorganisms to the vanadium.

The invention discloses a preparation method and application of an environment-friendly economic luminescent carbon quantum dot. The method disclosed by the invention mainly comprises the following steps of: with bagasse as a carbon source material, adding the bagasse into a mineralizer aqueous solution, and heating by using a hydro-thermal synthesis reaction kettle in a muffle furnace at the temperature of 180 DEG C for 4h; centrifuging a brownish black reaction liquid at a high speed, and then, collecting a supernatant for dialyzing; collecting the reaction liquid in a dialysis bag, cooling the reaction liquid, and then, transferring the reaction liquid into a freezer drier for freeze-drying to finally obtain a powdery carbon quantum dot. The preparation method disclosed by the invention has the characteristics of simplicity, convenience and rapidness in operation as well as simplicity in preparation process and equipment; and the environment-friendly economic luminescent carbon quantum dot is made of daily wastes as raw materials and is low in cost, environment-friendly and easy to popularize. The carbon quantum dot prepared by the invention has the excellent characteristics of favorable dispersibility, water solubility, fluorescent stability, biocompatibility and the like, and is successfully applied to living cell imaging and marking.

The invention discloses a method of anhydrously preparing 2-chloro-4, 6-diamino-1, 3, 5-s-triazine. The method is simple in process and simple and convenient to operate and can be used for industrial production on a large scale. The method of anhydrously preparing the 2-chloro-4, 6-diamino-1, 3, 5-s-triazine, which is disclosed by the invention, comprises the following steps: carrying out a reaction on cyanuric chloride and ammonia gas in an anhydrous reaction system, namely an aprotic solvent at 30-80 DEG C for 2-20 hours; and then, carrying out vacuum filtration on the reaction liquid, washing with water and drying to obtain the product, namely 2-chloro-4, 6-diamino-1, 3, 5-s-triazine.

The invention discloses a novel household appliance networking control system which comprises a home network terminal, at least one wireless signal repeater, at least one appliance control module arranged on a household appliance and/or a power signal control module arranged on a home power distributer, wherein a paired signal end of each wireless signal repeater is in wired connection with a paired end of the home network terminal; an uplink control signal end of each wireless signal repeater is wirelessly connected with a corresponding downlink control signal end of the home network terminal, and the downlink control signal end of each wireless signal repeater is in wired connection with corresponding control signal ends/end of to-be-controlled appliance control module and/or the power signal control module. The novel household appliance networking control system disclosed by the invention transmits a control signal to the appliance control module on the household appliance or the power signal control module on the home power distributor through a home network terminal device, and achieves a household appliance control mode in an internet mode.

The invention relates to the field of molecular genetics, and particularly provides molecular identification primers for chicken fast/slow feathering phenotype. The forward primer is 1305s: 5'CCTCCTTGCCAAACCTTA3'; and the reverse primer is 1305a: 5'ATCAGCCAGATCCGTCAG3'. The primers have the advantages of favorable specificity and high amplification efficiency, and can be used for molecular identification of chicken fast/slow feathering phenotype. The invention also provides a molecular identification method of chicken fast/slow feathering phenotype. When being used for experimentation in combination with the primers, the method is simple to operate and high in feasibility, and can solve the problems of undefined identification standard, low identification result accuracy, long male/female complete set line construction time and limited identification time in the fast/slow feathering identification.

The invention relates to the field of microfluidic technology, particularly to a detection system based on microfluidic technology. The detection system comprises a high-pressure gas source mechanism,a sample introduction mechanism, a feeding mechanism and a microfluidic chip, wherein the feeding mechanism is used for adding a sample into the sample introduction mechanism; the high-pressure gas source mechanism is used for supplying a high-pressure gas source to the sample introduction mechanism to press the sample in the sample introduction mechanism into the microfluidic chip; and the microfluidic chip is used for analyzing the sample. The detection system of the invention is simple in structure and easy to operate.

A coal rock identification device and method for an underground coal seam of a coal mine based on object reflection performance difference are suitable for automatic identification of a coal rock interface of a working face under fully mechanized mining working conditions. The recognition device comprises a front-end sensor, a signal processing center and a feedback device. The basic method comprises the following steps of: capturing the change by using a sensor according to the surface structure and color difference of the coal and the rock and the different reflecting capacities of the coal and the rock, transmitting a signal back to a processing center, and quickly distinguishing the coal and the rock through the identification processing of the signal processing center, so as to obtain the real-time boundary condition of the coal and the rock of the underground coal mine working face. Therefore, correction of the coal mining working route of the coal mining machine is realized. The device is simple in structure, high in measurement result accuracy and wide in practicability.