34results about How to "Carcinogenic" patented technology

The invention discloses a method for preparing a bismuth hydroxide / bismuth tungstate compound photo-catalyst by heating an one-pot solvent. A novel Bi(OH)3 / Bi2WO6 visible responsive photo-catalyst is prepared by taking ethanol and water as a mixed solvent, heating the one-pot solvent, and only excessively using and dissolving one bismuth source Bi (NO3)3.5H2O. The photocatalytic activity of the product is systematically researched under the impact of ethanol content, reaction temperature and time, Bi(OH)3 compound content and other experiment parameters, and the optimal conditions for preparing Bi (OH)3) / Bi2WO6 include alcohol-water volume ratio of 9 : 8, solvent hot temperature of 200 degrees centigrade, reaction time of 6 hours, and Bi (OH)3) compound mole ratio of 0.3. The preparation method has the characteristics of simpleness, low cost and energy saving, the prepared compound photo-catalyst has the excellent photocatalytic performance, thereby solving the problem that the present pure bismuth tungstate is relatively weak in catalytic performance and restricted in actual application.

The invention discloses an environmentally friendly release agent for aerated bricks and a preparation method thereof, and relates to the technical field of new building materials. The mass percentages of the components in the release agent are as follows: 25% to 50% of environmentally friendly base oil, 5‰ to 4% of composite emulsifier, 1‰ to 2% of tackifying polymer, 1% to 2% of functional additives, The remaining amount is water; the preparation method includes the following steps: a) fully stir the environment-friendly base oil and the compound emulsifier first, and then add a certain amount of water b) add the viscosifying polymer to continue stirring for 1 ~ After 2 hours, a stable milky white emulsion discharge was formed. On the one hand, the invention solves the pollution problem caused by using waste engine oil in the traditional release agent, on the other hand, it can make the brickwork form a uniform and smooth surface, saving material cost.

The invention discloses a preparation method of styrene macroporous strong-alkaline anion exchange resin for removing nitrate in water. Styrene, divinyl benzene, benzoyl peroxide, liquid paraffin, polyvinyl alcohol, gelatin, methylene blue, dichloromethane, 1,4-bis(chloromethoxy)butane, anhydrous tin tetrachloride and triethylamine are used as main raw materials; the macroporous strong-alkaline anion exchange resin is prepared through suspension polymerization reaction, chloromethylation reaction and amination reaction. The preparation comprises the following steps: synthesis of styrene divinyl benzene cross-linked polymer by the suspension polymerization method, chloromethylation reaction of styrene divinyl benzene cross-linked polymer, and amination reaction of chloromethylated styrene divinyl benzene cross-linked polymer. The particle size of the prepared resin is 0.5-1.5mm; the resin has the advantages of uniform pore distribution, strong adsorbability against nitrate, high selectivity on nitrate and the like; the physicochemical properties of the resin are good. The resin can be applied to the nitrate removal treatment process of water, and has good development prospect and practical significance.

The application of the SNORD16 gene in the preparation of a colon cancer detection kit and related kits belong to the field of biotechnology. In order to excavate and identify prognostic biomarkers of high-risk patients and to explore new molecular mechanisms of the pathogenesis of colon cancer, the present invention provides the application of SNORD16 gene in the preparation of colon cancer detection kits. The nucleotide sequence of the SNORD16 gene is as shown in SEQ ID No. .1 shown. The kit is used for colon cancer diagnosis and / or prognosis assessment; compared with normal paracancerous tissues, the SNORD16 gene is highly expressed in colon cancer cells or tissues. The invention also provides related detection kits. In vitro functional experiments show that SNORD16 can promote the growth, proliferation, migration and invasion of colon cancer cells by inhibiting apoptosis, indicating that SNORD16 has oncogenic effects in colon cancer and can also be used as a new diagnostic and prognostic biomarker for colon cancer.

The invention discloses a method for separating polycyclic aromatic hydrocarbons by using a weakly polar rosin-based polymer chromatographic column. ‑5 mol sample solution of a polycyclic aromatic hydrocarbon mixture; the polycyclic aromatic hydrocarbon mixture is a mixture of two or more of benzene, naphthalene, fluorene, pyrene, and benzopyrene; (2) setting parameters: the weakly polar rosin base The polymer chromatographic column is connected to the liquid chromatograph, and the mobile phase flow rate of the liquid chromatograph is set to 0.1-1.0mL / min, the detection wavelength is 254-270nm, and the column temperature is 30±15°C; (3) Separation: start sample injection The valve enables the mobile phase to bring the sample solution into the rosin-based polymer chromatographic column to realize the separation of the five polycyclic aromatic hydrocarbons. The invention has high sensitivity and simple operation, and does not cause secondary pollution to the separated samples.

The invention discloses a surface treatment method for a chromium and zinc-free coating of a neodymium-iron-boron permanent magnet material. The method comprises the following steps of: performing chamfering, polishing, degreasing, oil removing, sand blasting, derusting and chromium, zinc and aluminum-free coating treatment; and performing zinc-aluminum coating treatment on the surface of the neodymium-iron-boron permanent magnet material by using a chromium, zinc and aluminum-free solution, wherein the chromium, zinc and aluminum-free solution comprises metal powder, inorganic powder, organic powder, hydrocarbon methylcellulose, polyethylene glycol, alkyl phenyl polyoxyethylene ether, an epoxy resin, a silane coupling agent, phytic acid and the balance of ethanol; the metal powder comprises zinc powder and aluminum powder; the inorganic powder comprises magnesium powder, tin powder, tin dioxide or magnesium oxide; and the organic powder comprises polyfluortetraethylene. The surface treatment method has the advantages of easiness for treating, quickness, environmental friendliness and high corrosion resistance.

The invention provides a rapidly degradable PVC material as well as a preparation method and an application thereof. The rapidly degradable PVC material comprises the following components: 100 parts of PVC resin, 20-80 parts of a plasticizer, 1-10 parts of an auxiliary plasticizer, 1-5 parts of a heat stabilizer, 0.1-3 parts of lubricant, 10-60 parts of an auxiliary agent A for accelerating degradation, and 10-30 parts of a preparation B for accelerating degradation; the auxiliary agent A for accelerating degradation is polyglycolic acid, and the preparation B for accelerating degradation is polylactic acid. The rapidly degradable PVC material satisfies physical properties, chemical properties and biological compatibility needed by the PVC material of disposable medical consumables, and is rapidly degradable in a burying treatment process. Irritation, carcinogenicity, and harm to male reproductive system which may exist in traditional PVC materials are removed, and disadvantages of long burying degradation period time, environment pollution, and the like of disposable medical consumable wastes are overcome.

The invention provides a paint for calligraphy and painting, which is composed of rice flour, diatom mud, sandalwood powder, rosin powder, mugwort leaf powder, and the balance is water. The present invention uses rice flour as the main material to completely replace the traditional water-based or oil-based pigments. On the basis of overcoming the various toxicity of existing acrylic pigments, the present invention utilizes the surface protein and starch rich in rice flour, After gelatinization, the paint for calligraphy and painting in the present invention is made into a paste, and the special fragrance of surface protein and rice flour makes the paint for calligraphy and painting of the present invention have a lasting compound fragrance, and in rice flour, mix diatom mud, sandalwood powder, glue, Artemisia leaf powder and clear water are gelatinized to form a calligraphy and painting pigment, and the calligraphy and painting works completed with the calligraphy and painting pigment have a three-dimensional raised effect after drying, and the calligraphy and painting works created with the calligraphy and painting pigment of the present invention have better appreciation and decoration. Long-lasting aroma, easy to store. The invention also provides a preparation method of the paint for calligraphy and painting.

This invention is a polymer / montmorillonite-garlicin nanometer antibiosis composite. Its raw materials and weight amount is that polymer 100, montmorillonite-garlicin 0.1-10, disperse medium 0-400, cross linking agent, accelerator 0-1. The polymer is composed by silicone rubber gum which is chosen from methylsilicone, pyro-methylsilicone and additive type methylsilicone, polyurethane which is chosen from PE, PVC and PP, or the polymer of two compounds. The functional intercalator of montmorillonite-garlicin is garlicin. The invention slows down the release of garlicin, so it can extend its antibiosis function outstandingly with its good slow-release nature. Except the preparation of high performance montmorillonite-garlicin materials, it can also boost the mechanic function, heat resistance, mediator resistance of the polymer basal body.

The invention relates to a skin-care compound and a preparation method and application thereof, and a skin-care product, and relates to the technical field of skin-care products. According to the technical scheme, the skin-care compound is (1E, 4E, 6E)-1,7-bis(4-hydroxyphenyl)-1,4,6-heptatriene-3-one, and the structural formula of skin-care compound is shown in the description. The skin-care compound is extracted out from pure natural plants containing (1E, 4E, 6E)-1,7-bis(4-hydroxyphenyl)-1,4,6-heptatriene-3-one. The skin-care product can be applied, as an irritant of human-dermal-fibroblastHDFa secreting collagen and a tyrosinase inhibitor, to the preparation of anti-aging and skin-whitening cosmetics.

The invention relates to a compound alpha-ketoacid tablet free of talcum powder and a preparation process thereof. The conventional preparation process is changed without adding the talcum powder; the tablet prepared by the method has good compressibility, attractive appearance, high disintegrating speed, high dissolution rate, high stability in long-term placement and high medicinal safety. Wet granulation is performed separately according to the acidic and alkaline ingredients and the mass balance ratio of main medicines, i.e., a meta-alkaline ingredient, a meta-acidic ingredient and a nearly neutral ingredient are subjected to wet granulation separately, and then mixing, tabletting and coating are performed, so that the direct contact among the ingredients is avoided, long-term stable placement can be realized and the contents of the active ingredients are guaranteed. A disintegrating agent internal and external addition method is adopted in the formula, the content of polyethylene glycol is optimized, and no talcum powder or analogs with ingredients similar to the talcum powder are included in the formula, so that the problems of agglomeration phenomenon and larger viscosity in the granulation process are solved, and the safety in medication is guaranteed.