144results about How to "High broad spectrum" patented technology

A hydrophilic composite immobilized microbe carrier is preapred from foam polyurethane, polyisocyanate, MLZ-type high-molecular water absorbent and activated carbon. Its advantages are large specific surface area, macropore permeability, high hydrophilicity, reactivity and adsorbability, excellent affinity to microbe, and high stability.

The invention relates to an in-vitro detection reagent for clinical diagnosis, particularly a reagent for determining metabolic disorder in a human body, particularly a p-hydroxy phenylalanine urine detection reagent and a preparation method thereof. The urine detection reagent is prepared by respectively dissolving Hg2<+>, Hg<2+>, Ni<2+> and alpha-nitroso-beta-naphthol in corresponding acid solutions and proportionally mixing. The mercuric sulfate is dissolved in a sulfuric acid solution as a donor of Hg<2+>, the mercurous nitrate is dissolved in a nitric acid solution as a donor of Hg2<+>, the nickel sulfate is dissolved in distilled water as a donor of Ni<2+>, and the alpha-nitroso-beta-naphthol is dissolved in a nitric acid solution. The invention overcomes the defects in the prior art, and provides a new-formula metabolic disorder quick urinalysis reagent which has the advantages of high stability, high sensitivity and wide application range.

A method for treating wastewater in high-plateau and high-cold area, the wastewater and garbage leakage liquid being discharged through processes of physicochemical, biological and ecological steps. In the biological steps, carrier biological reaction device is employed, and by using immobilization technology of microporous biological carrier (WZT) and microorganism to improve the treating effect. In the ecological step, the artificial ecological wetland is employed. The method can treat wastewater especially wastewater in high-plateau and high-cold area with distinct effect because the critical technology of carrier biological reaction device and artificial ecological wetland can suit the climatic condition in high-plateau and high-cold area and it combines the physicochemical, biological and ecological steps organically, the wastewater treated can all reach the I class emission standard of country second category watershed.

The invention belongs to the field of molecular biological gene engineering, and particularly relates to a double-control double-regulation prokaryotic expression vector system and a construction method and application thereof. Two expression vectors finish expression of a target gene in the vector system, wherein one expression vector is a main expression vector, and the target gene is cloned on the expression vector; the other expression vector is an auxiliary expression vector, and the auxiliary expression vector controls a switch for regulating the promoter of the main expression vector; the main expression vector contains an SP6 promoter and a lactose regulating gene; the auxiliary expression vector contains an arab promoter, an araC regulating gene and an SP6RNA polymerase gene; and the target gene expressed by the main expression vector and the auxiliary expression vector are controlled and/or regulated by an inducer.

The invention discloses a chemistry-plant combined remediation method of fluoride-type combined pollution site soil. The chemistry-plant combined remediation method of fluoride-type combined pollution site soil comprises the following steps: firstly, crushing and screening pollution soil particles; then placing the soil particles into a soil multielement ex-situ remediation device, adding mixed eluant, and carrying out continuous ex-situ synergism elution by adopting the mode of ultrasonic intensification and warming treatment synchronously; then inoculating purslane for eluted soil, and applying a nutritious source buffer liquid equal to 30%-40% of soil mass; culturing and growing artificially, and completing the remediation. Perfluorinated compounds, polycyclic aromatic hydrocarbon and multiple types of heavy metals in site soil can be eluted efficiently and synchronously; purslane inoculation and outer source nutritional substance adding are beneficial to the deep degradation by combining with residual state polycyclic aromatic hydrocarbon after soil elution, and are also beneficial to the recovery of microorganism ecological function universality and stability of the pollution soil environment.

The invention discloses an analysis device based on an electrochemical luminescence technology and double-pole electrode configuration. The analysis device comprises a mini-type dark room for storing a reaction reagent and having a reaction and a liquid storage tank for storing detection objects and having an oxidization-reduction reaction, wherein a double-pole electrode and an electric signal applying unit are arranged between the mini-type dark room and the liquid storage tank respectively; one end of the double-pole electrode is packaged in an inner cavity at the bottom of the mini-type dark room and the other end of the double-pole electrode stretches into the liquid storage tank; and meanwhile, a positive pole of the electric signal applying unit stretches into the liquid storage tank through a driving electrode and a negative pole of the electric signal applying unit is connected with the top of the mini-type dark room through a driving electrode. According to the analysis device based on the electrochemical luminescence technology and the double-pole electrode configuration, the stored detection objects are linked with signal molecules, so that the oxidization-reduction reaction in the liquid storage tank is transmitted into the mini-type dark room in an electron form, a light signal is generated and a corresponding electrochemical luminescence signal is realized, so that the sensitivity and reliability of detection are extremely improved.

The invention discloses a preparation method of a series of chitosan polyamine derivative-silver supported nanometer titanium dioxide composite material. The composite material comprises chitosan polyamine derivatives and silver supported nanometer titanium dioxide. The preparation method of the composite material comprises the following steps: preparing the series of the chitosan polyamine derivatives; suspending the derivatives in a certain amount of an organic solvent which can be an alcohol, acetonitrile, DMF, or DMSO, or in a mixed system of the organic solvent and water; stirring; heating; adding the prepared silver supported nanometer titanium dioxide; reacting for a period of time; carrying out reduced pressure filtration; washing; and drying to obtain the chitosan polyamine derivative-silver supported nanometer titanium dioxide composite material. The composite material has the advantages of nontoxicity, low price, biodegradability and the like of chitosan natural substances, and also has the advantages of high stability and efficient antibacterial property of nanometer titanium dioxide and the advantages comprising the efficient antibacterial property and the like of silver ions, so the composite material has large application values in the antibacterial property and the heavy metal ion removal, and has superior performances incomparable by single materials.

The invention discloses a compound demulsifier for heavy inferior crude oil. The compound demulsifier can improve the emulsifying property of the oil-water interface relatively well for O/W type heavy inferior crude oil and thick oil so as to realize a relatively good dehydration effect with relatively small dosage; and moreover, the dehydration efficiency is obviously improved, and a little oil is carried by the discharged water. The composition and content of the compound demulsifier are as shown in the specification.

The present invention belongs to the field of fire detecting and warning technology. The smoke concentration detector includes air filter, semiconductor laser, laser beam space correcting lens, laser beam space filtering diaphragm, detecting chamber, detecting chamber rack, smoke scattering detector, laser power detector, extinction mechanism, reflector and casing. All the parts are installed inside the casing except the air filter inserted to the air inlet of the casing.

The invention discloses a high-efficiency compound demulsifier for heavy and poor crude oil. The high-efficiency compound demulsifier can improve the emulsification performance of oil-water interfaces of oil/water (O/W) heavy and poor crude oil and thickened oil, so that high dehydration effect can be achieved in a small using amount and the dehydration efficiency is greatly improved and the discharged water carries a small amount of oil. The compound demulsifier comprises the following components in percentage by mass: 30 to 50 percent of block polyether polymer demulsifier, 3 to 5 percent of novel organosilicon polymer demulsifier, 0.5 to 5 percent of demulsifier additive, and 40 to 60 percent of solvent.

The invention belongs to microbial strains and preparation methods of the microbial strains, and particularly relates to Escherichia coli and a preparation method of the Escherichia coli. A cloned iss gene segment in outer membrane protein of Escherichia coli pathogenic bacteria of a coded bird is regrouped in an expression plasmid pEGX-6p-1 after BamHI and SalI double enzyme digestion, and a pronucleus expression plasmid pEGX-6p-1/iss is built; the pronucleus expression plasmid pEGX-6p-1/iss is transformed into Escherichia coli BL21-DE3, and regrouped Escherichia coli BL21-DE3/pEGX-6p-1/iss is built. The technical problem that the vaccine broad-spectrum performance is poor in the prior art is solved. The Escherichia coli has the advantages of being good in broad spectrum performance, good in immune effect, wide in industrialized development prospect and the like.

The invention discloses a low-temperature demulsifier for a crude oil emulsion and a production method thereof. The low-temperature demulsifier comprises the following components: 35-65% of functional demulsifier, 1-10% of low-temperature complexing agent, 0.5-5% of additive and 35-65% of organic solvent. The production method of the low-temperature demulsifier comprises the step of compositely preparing with a reaction kettle with a clamp sleeve. The low-temperature demulsifier has wide suitable crude oil types and has better application performance compared with the traditional low-temperature demulsifier.

The invention discloses a multifunctional traditional Chinese medicine organic acid grafted chitosan quaternary ammonium salt broad-spectrum antibacterial agent and a preparation method thereof. Under the action of EDC/NHS, a traditional Chinese medicine organic acid reacts with chitosan quaternary ammonium salt molecules to synthesize the traditional Chinese medicine organic acid-chitosan quaternary ammonium salt broad-spectrum antibacterial agent with antibacterial, anti-inflammatory and antioxidant properties. The method is simple and convenient in steps, low in investment, high in output and suitable for large-scale production and use. Through the synergistic effect of the traditional Chinese medicine organic acid and the chitosan quaternary ammonium salt, the broad-spectrum antibacterial property superior to that of the chitosan quaternary ammonium salt is obtained; through parameter optimization, the obtained traditional Chinese medicine organic acid-chitosan quaternary ammonium salt antibacterial agent has no cytotoxicity; on the other hand, the traditional Chinese medicine organic acid endows the antibacterial agent with good anti-inflammatory performance and oxidation resistance; and due to no cytotoxicity and multi-functionalization, the traditional Chinese medicine organic acid-chitosan quaternary ammonium salt broad-spectrum antibacterial agent has a wider application prospect.

The invention provides graphene composite photocatalytic aerogel with a hierarchical porous structure and a preparation method thereof. The graphene composite photocatalytic aerogel has a lamellar structure and a three-dimensional structure and also has the hierarchical porous structure with a macropore, a mesopore and a micropore. An adsorption effect of graphene aerogel is combined with a photocatalysis effect of titanium dioxide, pollutants adsorbed to pores in the graphene aerogel and on the surface of the graphene aerogel are rapidly degraded by utilizing a photocatalysis effect of nano TiO2 and the graphene aerogel is generated in situ, so that the adsorption saturation time of the graphene aerogel is prolonged and the decontamination effect is greatly improved. The hierarchical porous structure in the composite graphene aerogel can be relatively conveniently regulated and controlled according to actual application requirements through changing types and adding amounts of added active carbon fibers, so that the universality that the graphene composite photocatalytic aerogel is applicable to different pollutants is improved. A whole set of synthesis process is simple and stirring is not needed in a chemical reduction in-situ self-assembling process; reaction conditions are moderate.

The invention relates to the technical field of pharmaceuticals, and provides a substituted aryl tetracyclic antifungal compound and pharmaceutically acceptable salts. The substituted aryl tetracyclic antifungal compound is as shown in a structural formula of the description. The invention further provides a preparation method of the compound and an application of the compound in preparing antifungal medicaments.

The invention relates to a preparation method of a layered unsaturated silver-zinc-copper-loaded composite antibacterial antiviral material. The preparation method comprises the following steps: weighing a silver salt, a zinc salt, a copper salt, a modifier, a complexing agent and a solvent, and modifying and complexing metal ions by adopting ultrasonic-assisted high-speed shearing and stirring toprepare metastable complex silver-zinc-copper composite ions; then carrying out stirring and dispersing, adsorbing the metastable complex silver-zinc-copper composite ions to interlayers of a two-dimensional nanometer layered material through unsaturated adsorption, then adding the material into a supercritical reaction kettle, and pressing carbon dioxide into the reaction kettle by using a high-pressure pump; and controlling the pressure and the temperature of the reaction kettle, subjecting a supercritical fluid to rapid pressure relief through a nozzle, and successively conducting centrifugation, drying and crushing to obtain the layered unsaturated silver-zinc-copper-loaded composite antibacterial antiviral material. The composite antibacterial antiviral material prepared by the method has the advantages of good heat resistance, high safety and the like, can be used for preparing antibacterial and antiviral polyester, nylon and other fibers, can be blended with tencel, combed cotton and the like, and is widely applicable to the fields of underwear, sports coats, home textiles and the like, comfortable in fabric hand feeling and strong in antibacterial and antiviral functions.

The invention relates to a polyethylene composite antibacterial coating containing nanometer silver particles and a preparation method thereof. The polyethylene composite antibacterial coating containing nanometer silver particles comprises polyethylene and nanometer silver particles uniformly distributed in polyethylene, wherein the mass fraction of the nanometer silver particles in the polyethylene composite antibacterial coating containing the nanometer silver particles is no less than 0.0714 wt%, preferably 0.0714 to 0.714 wt%. The preparation method of the invention has the advantages ofeasy operation, low spraying temperature, high efficiency, etc.; since a thermal spraying process is not utilized, the degradation and oxidation of polyethylene are effectively prevented, and the physical and chemical performance of the polymer is maintained unchanged. The polyethylene composite antibacterial coating containing the nanometer silver particles is applicable to the industries of foodpackaging, medical apparatuses and instruments, space equipment materials and the like. The coating can effectively reduce the consumption of Ag.

The invention belongs to the technical field of medicaments and provides a substituted benzothiazole compound and a pharmaceutically acceptable salt thereof. The structural formula of the substituted benzothiazole compound is as shown in formula I, wherein in formula I, R is a substituted naphthalene ring or a substituted aromatic heterocycle. The invention also provides the applications of the substituted benzothiazole compound and the pharmaceutically acceptable salt thereof to the preparation of medicaments for resisting fungi, tumors, viruses, high blood pressure and thrombus and topoisomerase inhibitors.

The invention discloses a salmonella molecular detection kit based on bcfD genes and a non-diagnostic detection method. The kit comprises (1) 10* Lamp buffer; (2) 8000U/mL BstDNA polymerase; (3) 10mM dNTPs; (4) a Lamp primer group: outer primer 5pmol/micro liter, inner primer 40pmol/micro liter, and annular primer 20pmol/micro-liter; (5) double distilled water; (6) fluorescent dye: 10*SYBR Green I; (7) positive control: salmonella standard strain genome DNA; and (8) negative control: double distilled water. The LAMP detection method has the advantages of rapidness, high efficiency, simplicity in operation, high specificity, high sensitivity, broad-spectrum property, applicability to in-situ detection and the like; no complicated instrument is needed; novel technical support is provided for the detection of salmonella; the salmonella molecular detection kit can be used for screening and detecting salmonella in animal husbandry production units, basic medical sanitary units, entry-exit and different disease control centers and is wide in market prospect, good in economic benefit and social benefit and wide in application range.