603results about How to "Increase abundance" patented technology

The present invention provides systems, apparatuses, and methods to detect the presence of fetal cells when mixed with a population of maternal cells in a sample and to test fetal abnormalities, i.e. aneuploidy. In addition, the present invention provides methods to determine when there are insufficient fetal cells for a determination and report a non-informative case. The present invention involves quantifying regions of genomic DNA from a mixed sample. More particularly the invention involves quantifying DNA polymorphisms from the mixed sample.

The invention provides an isolated and purified DNA molecule comprising at least one DNA segment, a biologically active subunit or variant thereof, of a circular intermediate of adeno-associated virus, which DNA segment confers increased episomal stability, persistence or abundance of the isolated DNA molecule in a host cell. The invention also provides a composition comprising at least two adeno-associated virus vectors.

The invention relates to a remote-sensing image object detection method based on deep learning. The method comprises: using remote-sensing images to construct a related data set, namely an image dataset after classification and labeling on the remote-sensing images and class labels generated through labeling work; building a panchromatic sharpening model based on generative adversarial networks (GAN); building an object detection model based on a deep convolutional neural network, and carrying out end-to-end training on the model through methods of back propagation, random gradient descent and the like; and carrying out end-to-end testing on the built model. The method of the invention has the advantage of high accuracy.

The invention provides a non-woven base composite membrane for lithium isotope separation and a preparation method thereof, as well as a lithium isotope separation method by using a membrane chromatography. The non-woven base composite membrane takes a non-woven fabric as a porous support body or a micropore membrane, a coating is prepared on the non-woven fabric by taking a crown ether graft polymer or a Kryptofix graft polymer with a lithium isotope separation effect as a film forming matter, or a coating can be prepared on the non-woven fabric by blending crown ether or Kryptofix and derivates of the crown ether or the Kryptofix into a film-formation polymer solution, and the coating and a base membrane are combined to form a composite separated membrane; the composite separated membrane is taken as a membrane chromatography medium stationary phase, so as to separate lithium isotopes by using the membrane chromatography. The non-woven base composite membrane or the lithium isotope separation method by using the membrane chromatography can effectively improve the contact and coupling efficiency of crown ether molecules and Lithium Ions in the separation process for solid-liquid extraction lithium isotopes, and realize the greenization, serialization and high efficient of the process of lithium isotope separation.

The invention discloses a colorectal cancer marker, which consists of at least two of the following microorganisms: Eubacterium_hallii_DSM_3353, Clostridium_SS2_1, Ruminococcus_5_1_39BFAA and Eubacterium_ventriosum_ATCC_27560. The invention also discloses a method and an apparatus for determining individual status by virtue of the colorectal cancer marker. Compared with a colorectal cancer group, the colorectal cancer marker has significant enrichment in a health group; therefore, the colorectal cancer marker can serve as a marker for distinguishing the health group from the group of colorectal cancer patients.

The application relates to synthetic compositions containing one or more human milk mono- or oligosaccharides for treating visceral pain.

The present invention relates to modified T cell receptor (TCR) α or β chains, or heterodimers comprising the same, wherein in the variable domain of said modified α or β chain, an amino acid at position 44 according to the IMGT numbering is substituted by another suitable amino acid in order to improve pairing of desired chains.

The invention discloses an AOA coupled anaerobic ammonia oxidation deep nitrogen and phosphorus removal process, which comprises an anaerobic zone for internal carbon source storage and phosphate release, an aerobic zone for aerobic excessive phosphorus uptake and short-cut nitrification-anaerobic ammonia oxidation, and an anoxic zone for internal carbon source short-cut denitrification-anaerobic ammonia oxidation, wherein an active biological filler is added into the aerobic zone and the anoxic zone to enrich main functional bacteria, the anaerobic zone has long hydraulic retention time and can store an internal carbon source, the anoxic zone is located at the rear end of the aerobic zone and does not need nitrification liquid backflow, and an aeration zone is added at the rear end of the anoxic zone to improve sludge settleability. The AOA coupled anaerobic ammonia oxidation deep nitrogen and phosphorus removal process solves the problems of insufficient carbon source and incapability of synchronously and deeply removing nitrogen and phosphorus in the nitrogen and phosphorus removal process, reduces the loss of the carbon source, improves the utilization rate of the carbon source, reduces the operation energy consumption of a sewage treatment system, and bring a better application prospect to deep nitrogen and phosphorus removal of urban sewage.

The invention relates to an air-breathing photo-assisted biomass fuel cell. The fuel cell can transform optical energy and biomass energy into electric energy through optical excitation. The fuel cell comprises a light window, a liquid storage chamber, sealing washers, an anode fixed plate, an anode diffusion layer, a membrane electrode, a cathode gas diffusion layer, a cathode collector plate and an end plate. The inner sides of the anode fixed plate and the cathode collector plate are respectively provided with the sealing washers. The membrane electrode is arranged between the two sealing washers. The membrane electrode located at one side of the cathode collector plate is provided with the cathode gas diffusion layer. The membrane electrode located at one side of the anode fixed plate is provided with the anode diffusion layer. The outer side of the cathode collector plate is provided with the end plate. The outer side of the anode fixed plate is provided with the liquid storage chamber. The sealing washer is arranged between the liquid storage chamber and the anode fixed plate. The light window is laid in the hollow part of the middle of the front side of the liquid storage chamber. The light window is used as a light entrance port. A photo anode and a fuel solution are arranged in the liquid storage chamber. The fuel cell provides a cheap and eco-friendly novel approach of conversion of solar energy and biomass energy into electric energy.

The invention discloses lactobacillus paracasei Lc19 and a microbial preparation containing the lactobacillus paracasei Lc19. The lactobacillus paracasei Lc19 is preserved in the China General Microbiological Culture Collection Center, and the preservation number of the lactobacillus paracasei Lc19 is CGMCC NO.17827; the lactobacillus paracasei Lc19 not only has a remarkable curative effect on constipation and colitis, but also can improve various characteristic intestinal related florae of constipation and colitis in a targeted manner, improve the abundance of various beneficial bacteria, reduce the abundance of various harmful bacteria, maintain the balance of the intestinal florae, and greatly improve the capability of recovering the health and diversification of the intestinal florae; the lactobacillus paracasei Lc19 also has the advantages of being convenient to eat, simple in treatment, high in remission rate, free of toxic and side effects and the like.

The invention discloses a method for enriching high density anaerobic ammonia oxidizing bacteria in a sewage nitrogen removing system. The method comprises following steps: (1) collecting nitrification sludge that contains floras of anaerobic ammonia oxidizing bacteria, preparing an active sludge solution, inoculating the solution to an enrichment medium, and carrying out nitrification domestication until the ammonia nitrogen conversion rate is not less than 80%; (2) inoculating the domesticated sludge to a reactor, adding a macroporous polyurethane filler, matrix ammonia nitrogen, and nitritenitrogen into the reactor, and starting the anaerobic ammonia oxidizing reactor at a low matrix concentration; (3) increasing the addition amount of matrix, and starting the anaerobic ammonia oxidizing reactor at a medium-high matrix concentration; and (4) increasing the addition amount of matrix, and enriching the high density anaerobic ammonia oxidizing bacteria. The macroporous polyurethane filler can provide a micro-aerobic environment for anaerobic ammonia oxidizing bacteria and can adapt to the agglomeration growth characteristics of anaerobic ammonia oxidizing bacteria; bacteria such as AOB, NOB, etc. can be eliminated, and high purity anaerobic ammonia oxidizing bacteria with high abundance can be obtained.

The invention discloses a probiotics-Chinese herbal medicine compound composition capable of loosening bowels to relieve constipation and application of the probiotics-Chinese herbal medicine compoundcomposition and belongs to the technical field of health-care foods. The composition comprises 13-15 kinds of lactobacillus rhamnosus, lactobacillus plantarum, lactobacillus paracasei, bifidobacterium lactis, lactobacillus acidophilus, bifidobacterium longum, lactobacillus reuteri, lactobacillus helveticus, lactobacillus fermentum, lactobacillus johnsonii, lactobacillus casei, lactobacillus crispatus, bifidobacterium breve, bifidobacterium bifidum and bifidobacterium infantis, 10-13 kinds of isomalto-oligosaccharide, inulin, lactitol, stachyose, fructo-oligosaccharide, xylo-oligosaccharide, Mannan-oligosaccharide, galacto-oligosaccharide, oat beta-glucan, glucan, soluble soybean polysaccharide, resistant dextrin and chitosan-oligosaccharide and 2-4 kinds of malts, fructus crataegi, blackplums and fermented soybeans. According to the probiotics-Chinese herbal medicine compound composition and the application thereof, probiotics, prebiotics and traditional Chinese medicine powder are compounded and can jointly promote intestinal canal health.

The present invention provides a method of preparing a nucleic acid library, which includes providing a one or more nucleic acid samples, and a one or more of samples of solid state capture material; contacting each nucleic acid sample with a sample of capture material to provide captured nucleic acid samples; and pooling the captured nucleic acid samples to provide the nucleic acid library. The method is particularly suitable for preparing nucleic acids for sequencing, especially next generation sequencing and related methods such as genotyping-by-sequencing.

The embodiment of the invention relates to a hybrid-phase structure layered oxide material and preparation method and application thereof. The chemical formula of the hybrid-phase structure layered oxide material is Na<x>NiFe<j>Mn<k>M<y>O<2+Beta>, wherein M is an element for doping and substituting a transition metal site, x, y, i, j, k and Beta are respectively mole percents occupied by corresponding elements, (y+i+j+k) is equal to 1, (x+my+2i+3j+4k)=2(2+Beta), x is more than or equal to 0.6 but less than or equal to 0.9, i is more than 0 but less than or equal to 0.3, j is more than 0 butless than or equal to 0.5, k is more than 0 but less than or equal to 0.5, Beta is more than or equal to -0.02 but less than or equal to 0.02, m is valence of M, the structure of a hybrid-phase layered oxide is a hybrid phase of P2 and O3, the space groups are respectively P63 / mmc and R-3m, in oxygen distribution of the hybrid phase, a part of oxygen forms P-type distribution, a part of oxygen forms O-type distribution, and the two structures are compatible in a staggered way in atomic scale.

The present invention provides an alcohol-free virus nucleic acid extraction kit based on a magnetic bead method. The alcohol-free virus nucleic acid extraction kit comprises a lysate, a magnetic beadsolution, proteinase K, a polyA solution, a deproteinized solution, a washing solution and a buffer solution. The present invention also provides a method for extracting nucleic acid by using the above kit. Firstly, a sample, the lysate and magnetic beads are mixed evenly, then nucleic acid molecules are captured while pyrolysis is conducted, and finally the special alcohol-free deproteinized solution and the washing solution are respectively used to remove impurities of proteins, salt ions and other impurities on surfaces of the magnetic beads. Compared with a conventional virus nucleic acidextraction method, the method is simple in operation steps, does not need single addition of binding liquid, realizes the simultaneous pyrolysis and binding, and co-extracts DNA and RNA; the whole operation process is free of alcohol or isopropyl alcohol, inhibitory substance residues are less, the experimental procedure is simple, and the whole process only takes about 40 minutes; and the method is safe and pollution-free, and free of toxic reagents of chloroform, phenol, etc., and can be operated manually or on an automation platform.

The invention discloses a deep-ultraviolet photoelectric detector of an amorphous gallium oxide-based thin film transistor. The deep-ultraviolet photoelectric detector comprises the thin film transistor, wherein the transistor comprises a substrate, a gate electrode, a gate dielectric layer, a channel layer, a source electrode and a drain electrode, the channel layer is an amorphous gallium oxide-based thin film, the thin film transistor is of a bottom gate structure, the gate electrode is arranged on the substrate, the gate dielectric layer covers the gate electrode, the channel covers an upper part of the gate dielectric layer, the source and the drain are respectively arranged at two ends of the channel layer, or the thin film transistor is of a top gate structure, the channel layer covers the substrate, the gate dielectric layer covers an upper part of the channel layer, the source electrode and the drain electrode are respectively arranged at two ends of the gate dielectric layer,and the gate electrode is arranged on the gate dielectric layer. The deep-ultraviolet photoelectric detector provided by the invention has the advantages of relatively high response and low power consumption under irradiation of deep ultraviolet light (320 nanometers), and moreover, the fabrication method is simple, large-area integration can be achieved, and the deep-ultraviolet photoelectric detector is compatible with a flexible substrate.

The invention provides a breast milk oligosaccharide composition for improving intestinal flora abundance and fecal odor of infants and application thereof. The breast milk oligosaccharide compositioncomprises 2'-fucosyllactose and / or 3'-fucosyllactose, and galactooligosaccharides. The invention also provides application of the breast milk oligosaccharide composition in improving intestinal floraabundance and fecal odor of infants. The invention also provides infant formula milk powder containing the breast milk oligosaccharide composition. The composition according to the invention has a plurality of breast milk oligosaccharides in different ratios, can increase the abundance of actinomycetes and firmicutes in intestinal microflora of infants, increase the number of bifidobacteria and lactic acid bacteria of infants and change the composition of intestinal flora, and can reduce the pH value of intestines and the contents of indole and skatole, reduce the contents of indole and skatole in infant feces, improve the character of infant feces, and reduce the concentration of peculiar smell compounds.

The invention discloses an application of lactobacillus rhamnosus CCFM1060 in preparation of functional microbial agents, foods and / or medicines. The lactobacillus rhamnosus CCFM1060 can tolerate thegastrointestinal environment of the human body, significantly improve fasting blood glucose rise and abnormal oral glucose tolerance of type 2 diabetics caused by high fat diet and STZ injection, reduce the area under the curve during glucose tolerance drug administration, and relieve insulin resistance; remarkably improve the increase of total cholesterol content and the increase of low-density lipoprotein cholesterol in serum of type 2 diabetics caused by high-fat diet and STZ injection; obviously relieve the inflammatory state of the liver; and significantly reduce pancreatic and liver pathological injuries caused by high-fat diet and STZ injection. The lactobacillus rhamnosus CCFM1060 has relatively strong adsorption capacity on perfluorooctanoic acid (PFOA), and has the capacity of relieving the toxicity of the PFOA.

The invention relates to the technical field of probiotics and particularly relates to lactobacillus reuteri and an application thereof. The invention provides Lactobacillus reuteri SLZX19-12 which ispreserved in the China General Microbiological Culture Collection Center (CGMCC), and the preservation number of the Lactobacillus reuteri SLZX19-12 is CGMCC No. 20121. Lactobacillus reuteri SLZX19-12 can be planted in an animal body, and is high in acid resistance and cholate resistance; the good inhibition effect is achieved on escherichia coli and salmonella; feruloyl esterase can be generated, and release and digestion of fibers in the feed in digestive tracts are promoted; the lactobacillus reuteri SLZX19-12 is prepared into a microbial inoculum and then fed to animals, intestinal floracan be improved, intestinal immunity can be improved, intestinal health can be improved, and the effect is safe and reliable.

The invention provides a compound preparation for increasing ratio of AKK (akkermansia muciniphila) bacteria and pathogenic bacteria in intestines as well as a preparation method and application thereof, and relates to the field of oral preparations. The compound preparation for increasing the ratio of AKK bacteria to pathogenic bacteria in the intestines is prepared from the following raw materials in percentage by mass: 21% to 64% of oligosaccharide, 21% to 44% of plant extract, 9% to 31% of fungus extract, 0.5% to 5% of sodium taurate, and 0.5% to 5% of elaeagnus angustifolia extract. The compound preparation has the advantages that the safety is good, and the intestinal flora can be effectively regulated. The preparation method of the compound preparation comprises the following stepsof mixing the oligosaccharide, the plant extract, the fungus extract, sodium taurate and the elaeagnus angustifolia extract, and grinding, so as to obtain the compound preparation. The preparation method has the advantages that the technology is simple, and the industrialized production is easy. The application of the compound preparation for increasing the ratio of AKK bacteria to pathogenic bacteria in the intestines is characterized in that the compound preparation is used for preparing the oral preparation for increasing the abundance of the AKK bacteria in the intestines, and reducing theabundance of the pathogenic bacteria.

The invention discloses a nitrogen-doped carbon material modified silver phosphate composite photocatalyst, a preparation method and application thereof. The silver phosphate composite photocatalyst comprises a nitrogen-doped carbon material, and silver phosphate particles are loaded on the nitrogen-doped carbon material. The preparation method comprises the following steps: preparing the nitrogen-doped carbon material into a nitrogen-doped carbon material dispersion liquid, adding an Ag<+> solution to prepare a nitrogen-doped carbon material / Ag<+> dispersion liquid, and adding an HPO4<2-> solution to prepare the silver phosphate composite photocatalyst. The silver phosphate composite photocatalyst disclosed by the invention has the advantages of high photo-induced electron-hole pair separation efficiency, strong light corrosion resistance, strong photocatalytic activity and the like, is a novel efficient visible light photocatalyst, can be widely applied to removal of organic pollutants in the environment, and has very high use value and very good application prospect. The preparation method of the silver phosphate composite photocatalyst has the advantages of simple process, operation method, low cost, greenness, no pollution and the like, is suitable for large-scale preparation, and is beneficial to industrial application.

The invention belongs to the technical field of catalyst preparation, and particularly relates to a preparation method and application of a supported CuNi bimetallic Cu1Ni1 / rGO catalyst. The preparation method of the catalyst comprises the following steps: (1) mixing copper acetylacetonate, nickel acetylacetonate, ferric trichloride, ascorbic acid and oleylamine; (2) adding graphene oxide into deionized water; (3) adding a graphene oxide aqueous solution obtained in step (2) into a material obtained in step (1), and uniformly mixing; (4) heating a material obtained in step (3) to react, stirring, cooling and standing; and (5) centrifuging a reaction solution obtained in step (4), and removing impurities to obtain the supported bimetallic catalyst. The catalyst disclosed by the invention ishigh in catalytic activity, stable in chemical structure and relatively good in conductivity; the raw materials are rich in source, and the catalyst preparation cost is reduced; and the cyclic utilization rate is high.

The invention relates to the technical field of biology, in particular to application of polysaccharide. The invention provides the application of lentinan in preparation of healthcare food capable of improving the abundance of beneficial bacteria and reducing the abundance of harmful bacteria in intestinal florae. An applicant for the invention observes the influence of the lentinan on lipid metabolism in mice through the intestinal florae by inducing obesity type-2 diabetic models of the mice through high-fat diet; the lentinan provided by the invention can regulate intestinal flora disturbance caused by diet, and can obviously change the proportion of the harmful bacteria in the intestinal florae and make unbalanced intestinal florae in vivo to trend to be normal so as to regulate the blood fat and blood sugar indicators of obesity caused by the intestinal flora disturbance due to the diet; the content of triglyceride in blood plasma can be obviously reduced; the content of cholesterol, low-density lipoprotein and free fatty acid can be reduced.

The invention discloses bacillus amyloliquefaciens. The bacillus amyloliquefaciens has the classification and name of Bacillus amyloliquefaciens Y14 and is preserved in China General Microbiological Culture Collection Center (CGMCC for short) on November 10th, 2016 with the preservation address of Microbiology Research Institute of China Science Academe, No.3, Courtyard 1, Beichen West Road, Chaoyang District, Beijing and the preservation number of CGMCC NO.13258. The strain has good inhibitory effect on pathogenic bacteria of southern blight and also can induce resistance of a botanical system, iron nutrition is provided for peanuts, a soil microbial community structure also can be improved, and a strong guarantee is provided for production of the peanuts.

The invention relates to a preparation method of vanadium trioxide microspheres, particularly a preparation method of core-shell structure vanadium trioxide microspheres. The method aims to solve the problems of high cost, complex steps and poor safety in the existing vanadium trioxide synthesis method, and the problems of small specific area, nonuniform shape and size, large particle size and poor stability in the product. The method comprises the following steps: 1. adding ammonium metavanadate into a solvent; 2. keeping the temperature at 180-220 DEG C for 8-15 hours; 3. washing the solid product, and drying; and 4. calcining. The method is simple and easy to implement and low in raw material cost; and the prepared material has the advantages of large specific area, high surface roughness, small particle size, uniform shape and size, stable chemical structure, high safety and the like. The method is used for preparing vanadium trioxide microspheres.

The invention discloses a method and a device for repairing a black and smelly water body in situ by utilizing a microbial fuel cell and aquatic plants. The method comprises the following steps: A, embedding a positive plate under a black and smelly water body-water interface; B, enabling root systems of the aquatic plants to penetrate through round holes formed in the positive plate; C, setting negative plates on a water-air interface, enabling the positive plates to suspend in water, and exposing the negative plates in the air; D, connecting the positive plate with the negative plates by using outer conductors and an external resistor, thus forming a current loop. The positive plate is located under a mud-water interface, round holes which are in equidistant array arrangement are formedin the negative plates, the root systems of the aquatic plants penetrate through the holes in the positive plate and are rooted in bottom mud, the negative plates are suspended on an overlying water -air interface, and the positive plate and the negative plates are sequentially connected through the external guide lines and the external resistor to form a current path. The method disclosed by theinvention is simple, the operation is convenient, and the structure is simple; absorption of the aquatic plants on nutrient substances is promoted, the black and smelly water body is converted into plant biomass, and blackening and smell as well as eutrophication of a water body are improved.

The present invention discloses a cloud-based multimedia teaching system, a development method and an interaction method thereof. In the present invention, a teacher produces a course in the Abode Flash format and uploads it from a client computer to a multimedia teaching system via the cloud; the multimedia teaching system communicates with a back-end server via a server framework in the Flash Remoting technology and establishes the course in the back-end server; the user interface of the multimedia teaching system contains a plurality of buttons linked to the courses. When a user clicks on a button of the user interface to select a course, the multimedia teaching system retrieves related data of the course from the back-end server via the server framework in the Flash Remoting technology and presents the data on the user interface thereof.

The invention provides an application of lactobacillus plantarum powder in regulating fat metabolism and intestinal flora of fat rats. The lactobacillus plantarum powder can reduce the in-vivo fat content, increased under induction of high-fat diet, of rats and reduce the body fat rate; the FFA content, increased under induction of high-fat diet, in serum of rats can be remarkably reduced; meanwhile, the TG content in the serum of obese rats can be reduced, and the HDL-C content is increased; the lipid metabolism function of the livers of the obese rats can be improved, and activation of a fatty acid synthesis pathway of the obese rats is inhibited; the condition of intestinal flora disorder of the obese rats can be improved, and the flora richness, flora diversity, flora structure and composition of the obese rats can be maintained; increase of relative abundance of firmicutes is inhibited; the relative abundance of bacteroides is improved; the relative abundance ratio of the firmicutes to the bacteroides in intestinal tracts of rats under the condition of high fat diet is reduced; and the similarity of intestinal flora of the obese rats and healthy rats is increased.

The invention relates to the technical field of the isotope labeling and in particular to a circular system for a cultivating abundant isotope carbon and nitrogen double-labeling plant sample. The circular system for the cultivating abundant isotope carbon and nitrogen double-labeling plant sample comprises a sealed cultivation chamber, a CO2 injector, a gas balancing device, a nutrient solution injector and a nutrient solution circular system. The sealed cultivation chamber comprises a transparent cover and a base. The transparent cover is internally provided with a semiconductor condensation dehumidification device. The transparent cover is connected with the CO2 injector and the gas balancing device. A cultivation basin, a liquid storage chamber, an external peristaltic pump, an ultraviolet sterilizing device, a circular peristaltic pump and a converging pool are successively connected to form a circular loop of the nutrient solution circular system. The converging pool is connected with the semiconductor condensation dehumidification device and the nutrient solution injector. The cultivation basin and the liquid storage chamber are installed in the base. The top of the cultivation basin is communicated with the transparent cover. Silica sand is installed in the cultivation basin. The circular system for the cultivating abundant isotope carbon and nitrogen double-labeling plant sample is capable of simultaneously labeling the carbon and nitrogen isotope, and realizing the cyclic utilization. The pollution of normal 12 C and 14 N is avoided, and an abundant carbon and nitrogen isotope double-labeling plant can be obtained.

The invention discloses a waste acid recovery treatment method for sludge generated in a steel wire rope plant. Steel wire rope acid washing waste acid is used for leaching metal irons of iron, lead and zinc in the steel wire rope sludge; sludge residue is conveyed to a hazardous waste treatment center to be treated; iron powder is used for reducing ferric ions into ferrous ions; through sulfide precipitation, lead and zinc ions are precipitated; the generated lead and zinc precipitates are cleaned and dried; the material can be used as a lead and zinc melting raw material due to the lead andzinc abundance; the purified ferrous chloride solution can be sold as production raw materials of polymeric ferric chloride flocculant; hydrogen sulfide gas generated in the reaction process and unorganized emission hydrogen sulfide gas are treated by two-stages of filling material adsorption towers and an active carbon deodorization device, the discharge is performed after the contaminant discharge standard is met; the generated sulfide is reused in a coagulation precipitation system. The method provided by the invention solves the problems that the sludge and waste acid generated in the steel wire rope production process of high toxicity, great harm, high yield, difficult processing and secondary pollution generation and the like.