• главная
  • рубрики
  • по алфавиту
  • реклама на сайте
  • обратная связь
коллекция "revolution"
Главная Коллекция "Revolution" Химия
  • 211. Synthesis and application of antioxidant and antimicrobial properties of azomethine and its complexes

    A three compounds, p-aminobenzylden-a-naftylamine and its metal complexes have been prepared. Studies have shown that the investigated metal complexes are effective inhibitors of the oxidation of complex action. Antioxidant effect of synthesized metal.

    статья (367,7 K)
  • 212. Synthesis and biological activity of 3,4-dimethylphenyloxamoyl aminoacids and their salts with D(+)-glucosamine

    Convenient method of synthesis of optically active oxamoylaminoacids. Compounds have significant hepatoprotective, antiinflammatory and immunodepressant activities with low toxicity. Influence of investigated sudstances on rarametrs of specific immunity.

    статья (133,8 K)
  • 213. Synthesis and characterization of dextran methacrylates

    Dextran methacrylates were received by acylation of dextran with methacryloilchloride in the presence of tertiary amines in the DMF/LiCl solution. Dextran methacrylates, obtained in the presence of triethylamine, with DS over 0.5 were insoluble in water.

    статья (164,1 K)
  • 214. Synthesis and characterization of poly (ethylene phthalate-co- propylene succinate)

    Obtaining a biodegradable polymer material with satisfactory thermal properties. Synthesis of copolyester, poly (ethylene phthalate-propylene succinate) by direct polycondensation from ethylene glycol, polypropylene glycol, phthalic and succinic acid.

    статья (238,7 K)
  • 215. Synthesis and characterization of two coumarin fluorescent dyes containing a chalcone moiety

    The technology for the synthesis of two coumarin-chalcone hybrids by means of Kleisen-Schmidt condensation between 3-acetylcoumarin with benzaldehyde and 4-chlorobenzaldehyde, respectively. Method of identification and control of a chemical process.

    статья (197,3 K)
  • 216. Synthesis and complexity of new ligand with mercurysalt(ii)

    The syntheses of a new ligand: di (Furanyl Methylene hydrazono Ethyl) Benzene. It's structure, spectroscopy methods (IR, 13C NMR). Synthesizing of the complex by reactance the ligand with HgCh. Calcination process from mono nuclear complex, electrolyte.

    статья (1,1 M)
  • 217. Synthesis and investigation of modified silica coating for biotechnology

    Preparing of mesoporous organic-inorganic hybrid composites on glass substrates by the sol-gel method for testing the proteins adhesion. The coatings of colloidal silica, polysiloxane sol methyl-modified sols and with various wettability properties.

    статья (585,3 K)
  • 218. Synthesis and study of the properties of amphiphilic poly-N-vinylpyrrolidone with terminal thioalkyl groups

    Radical polymerization with a thiol-type chain transfer agent of poly-N-vinylpyrrolidone-based amphiphilic polymers, which can be used as drug carriers. Critical micelle concentration and its dependence on the molecular weight of the diblock copolymers.

    статья (200,5 K)
  • 219. Synthesis and the antimicrobial activity of 5-methyl-6-(2-methyl-1,3-thiazol-4-yl)-3-phenylthieno[2,3-d]pyramidine-2,4(1H,3H)-diones

    Physicochemical properties of 1-alkyl-5-methyl-6-(2-methyl-1,3-thiazol-4-yl)-3-phenylthieno[2,3-d]pyrimidine-2,4(1H,3H)-diones 3 and 4. The method for preparation of 5-methyl-6-(2-methyl-1,3-thiazol-4-yl)-3-phenylthieno[2,3-d]pyrimidine-2,4(1H,3H)-dione.

    статья (392,0 K)
  • 220. Synthesis and toxicity of Di-Na_salt of 2-(pyridine-4-iltio) succinic acid

    Search of bioactive substances containing in the molecule a heterocycle and a deputy with high antioxidant properties such as succinic acid. Antibacterial and cytotoxic action of Di-Na-salt. Methods of di-Na-salt of 2-(pyridine-4-iltio)succinic.

    статья (548,5 K)
  • 221. Synthesis and x-ray investigation of nitrocalix[4]quinone

    The development of selective oxidation of simply accessible dihydroxy-dypropoxycalix[4]arene to nitrocalixmonoquinone by mixture of 75 % nitric acid and glacial acetic acid. Synthone for design of optical sensors and redox-sensitive bio-active compounds.

    статья (126,8 K)
  • 222. Synthesis of a new spirocyclic lactam derivatives from 3-halogeno-3-trifluoroacetyl-1-methyl-2-pyrrolidinones

    3-Bromo and 3-chloro-3-trifluoroacetyl-1-methyl-2-pyrrolidinones by the halogenation reaction of the corresponding 3-trifluoroacetyl derivatives. Characteristic hydrates after simple filtration on silica gel. The formation of new spirocyclic lactams.

    статья (140,9 K)
  • 223. Synthesis of benzylidene and azocontaining polymers for photophisical application

    The polymers built with the use of the free radical polymerization of methacrylic monomers incorporating an azobenzene side-group and monomers with benzylidene fragments. The results of photochemical and optical activities of the corresponding elements.

    статья (288,8 K)
  • 224. Synthesis of bioactive folate-ferrocene conjugate

    Synthesis of folate-ferrocene conjugate (FFC) through a stage of synthesis ferrocene carboxylic acid. Confirmation of the structure of the conjugate by the methods of spectroscopy. Studies of the biological activity of FFC by the method of tissue culture.

    статья (439,0 K)
  • 225. Synthesis of cobalt (II) complex with new ligand di (furanyle methylene hydrazono) 1.2- di acetyle hydrazine

    Study of the synthesis of complexes of diacetylhydrazine with hydrazine hydrate. Carrying out the reaction of the ligand with cobalt in the presence of salts of metal chloride and furfural. Condensation of diacetylhydrazine with hydrazine monohydrate.

    статья (838,5 K)
  • 226. Synthesis of Fe:MgAl2O4 nanopowders into laser plum

    The features of production of Fe:MgAl2O4 nanopowders by evaporation of targets made from a oxide mixture by repetitively pulsed laser radiation. Differences in the phase compositions of the solid powder substances. A rate of the cooling the ytterbium.

    статья (885,8 K)
  • 227. Synthesis of new n-aryl-2-[(4-amino-4H-1,2,4-triazolo-[4,3-b]pyradazin-3yl)thio] acetamide derivatives

    Prepared of n-aryl-2-[(4-amino-4H-1,2,4-triazol-3yl)thio] acetamides by interaction of amino-1,2,4-triazolyl-3thiol with n-aril-2-chloroacetamides and formation of n-aryl-2-[6,8-dimethyl[1,2,4]triazolo[4,3-b]pyradazin-3-yl)thio]acetamide derivatives.

    статья (93,9 K)
  • 228. Synthesis of novel surface active methacrylate monomers based on e-caprolactone

    Investigation of the reaction of e-caprolactone with methacrylic acid. Synthesis of the compound chloride with polyethylene glycol ether. Peculiarities of surface active methacrylate monomer. Surface tension in aqueous solution in contact with air.

    статья (196,5 K)
  • 229. Synthesis of Perfluoroalkyl Heterocycles Using Perfluoroolefins Containing a Reactive Group at the Double Bond

    Reactions of Thiocyanate and Isothiocyanate Derivatives of Fluoroolefins with N-Nucleophilic Reagents. The Influence of the N-Nucleophile on the Construction of Six-Membered Heterocycles. The Use of Fluoroolefins with a Carbonyl-Containing Substitutent.

    статья (1,2 M)
  • 230. Synthesis of silicas with carboxyl functionality using template method

    Analysis of the method of synthesis of new materials with carboxylic acid groups, based on the template method, was developed. The efficiency of this methodology was demonstrated by powder x-ray diffraction, infrared spectroscopy and thermal analysis.

    статья (168,1 K)
  • 231. Synthesis, physico-chemical properties and prognosis of the pharmacological activity of 4-phenyl-5-(1,2,3-benzotriazolyl-1)-3-mercapto-1,2,4-triazole(4H) derivatives

    The study of the synthesis and physicochemical properties of derivatives of 4-phenyl-5-(1,2,3-benzotriazolyl 1)-3-merkapto-1,2,4-triazole(4H). Due to computer prognosis data the substances synthesized are prospective anticonvulsants and antiasthmatics.

    статья (236,0 K)
  • 232. S–элементы. Щелочные металлы. Натрий. Калий

    Ознакомление со свойствами щелочных металлов - химических элементов главной подгруппы периодической системы элементов Д.И. Менделеева. Анализ особенностей натрия - серебристо-белого мягкого металла, который на воздухе быстро окисляется с поверхности.

    реферат (15,5 K)
  • 233. Technetium and rhenium pentacarbonyl perchlorates

    Сomparative analysis the chemistry of technetium and rhenium сarbonyl perchlorates [M(ClO4)(CO)5]. The descriptions of their molecular structure, physical properties, types of materials, methods and procedures for their synthesis and reactivity.

    статья (812,0 K)
  • 234. The chemistry of thienopyridines

    Thiophene ring closure in pyridine derivatives. Syntheses of tri- and polycyclic systems based on thienopyridines. Pyridine ring closure in thiophene derivatives. Methods for the preparation of thieno[3,2-b]pyridine derivatives and their properties.

    статья (466,4 K)
  • 235. The chemistry of thienothiophenes

    Thiophene derivatives, cyclopropenethiones, dithiynes, carbon disulfide in the synthesis of thienothiophenes and their analogues. Reactivity and chemical transformations. Molecular structures and physical properties fields of application thienothiophenes.

    дипломная работа (578,1 K)
  • 236. The chemistry, biosynthesis and biological activities of artemisinin

    Some aspects of sugar-derived heterocycles and their precursors which are utilized as the inhibitors against glycogen phosphorylases and are responsible for the release of mono-glucose from poly-glucose. The quantitative structure-activity relationship.

    научная работа (7,7 M)
  • 237. The Cu2Se–PbSe–As2Se3 system

    Study phase equilibria of the quasi-ternary system Cu2Se–PbSe–As2Se3 by X-ray diffraction and differential thermal analysis. The nonvariant processes in the As2Se3-rich part of the triangle in the large temperature. The formation of ternary compounds.

    статья (270,4 K)
  • 238. The deoxygenation of water by batch on the iron containing composites basis

    The efficiency of using softened water in the removal of dissolved oxygen and iron ions has been determined. The dependence of the efficiency in the processes of the deoxygenation and iron removal of water on the filtering speed through the redox filter.

    статья (461,4 K)
  • 239. The effect of thermmal modification on the development of carbon material microporus structure

    Microporous structure of outgoing and thermally modified plant-extracted carbon material. Porous system characteristics by different methods on low temperature adsorption-desorption. Сharacteristic of most effective thermal modifications form nanopores.

    статья (956,5 K)
  • 240. The effects of different cations on the physicochemical characteristics of casein micelles

    Physicochemical characterisation of casein micelles suspended in milk ultrafiltrate and enriched with different cations: Fe, Cu, Ca. The order of association of cations with casein micelles. Changes in hydrophobicity, zeta potential of casein micelles.

    статья (272,1 K)

Страница:

  •  « 
  •  3 
  •  4 
  •  5 
  •  6 
  •  7 
  •  8 
  •  9 
  •  10 
  •  11 
  •  12 
  •  13 
  •  » 
  • главная
  • рубрики
  • по алфавиту
  • Рубрики
  • По алфавиту
  • Закачать файл

© 2000 — 2025, ООО «Олбест» Все наилучшее для вас