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коллекция "revolution"
Главная Коллекция "Revolution" Химия
  • 91. Epoxy resins chemical modification by dibasic acids

    Kinetic regularities of epoxy resins modification by aliphatic and aromatic dibasic acids have been studied. The effective rate constants and activation energies of the reactions between epoxy resin and acids by different nature have been calculated.

    статья (174,0 K)
  • 92. Ethylene Diamine Functionalized Citrate-Capped Gold Nanoparticles for Metal-Enhanced Bioluminescence

    Metal-enhanced bioluminescence is a complex photophysical event which manifests itself in manifold luminescence enhancement and depends on many parameters. The parameters include the distance between the luminescent source and the nanomaterial surface.

    статья (241,1 K)
  • 93. Examination of absorption spectra of amorphous silicon in the infrared range

    Discusses the amorphous materials in terms of absorption of electromagnetic infrared radiation as the integral characteristic of a photoelectric converter. The spectrum obtained experimentally was shown with the consideration of the main absorption peak.

    статья (449,0 K)
  • 94. Experimental study of synthesis polymer based on maleic acid and 2-methylquinoxaline 1,4-dioxide using photocatalysis

    Synthesis of a polymer by the reaction between maleic acid and 2-methylquinoxaline 1,4-dioxide. Using photocatalysis during synthesis. The reaction of the polymer with maleic acid molecules. Determination of the reaction mechanism and polymer structure.

    статья (858,4 K)
  • 95. Eлектрохiмiчна регенерація водних розчинів перйодату натрію у синтезі діальдегід крохмалю

    Електрохiмiчна регенерація розчинів у виробництві оксидованих полiсахаридiв. Процес окислення йодат-іонів до перйодат-iонiв на платинових та дiоксидсвинцевих титанових анодах. Ефективність анодних матеріалів. Ітенсифiкуючий вплив домішків хлорид-iонiв.

    автореферат (60,2 K)
  • 96. Factors that Affect the Rate of a Chemical Reaction

    Brief biographical information about the life of F. Haber - a German chemist and Nobel laureate. Investigation the reaction of nitrogen with hydrogen, which produces ammonia. The essence of Le Chatelier's Principle. The main function of the catalyst.

    реферат (13,7 K)
  • 97. Famous chemists

    Dmitro Ivanovich Mendeleev - the great Russian scholar and lexicographer, chemist and physicist, engineer, geologist and even a meteorologist. Mikhail Lomonosov. Ukrainian chemist - Ivan Gorbachevski. Amedeo Avogadro. Ernest Rutherford. Robert Boyle.

    презентация (549,9 K)
  • 98. Features of Ni/NiO nanopowder synthesis by thermal decomposition of nickel acetate amines: effect of annealing temperature and duration and ammonia content on powder composition and particle size

    The using nickel powders as electrode materials in multilayered ceramic capacitors. Development of technology of Ni/NiO nanopowders obtaining with particle size of 20 nm and minimal impurities content. The analyses of powder microstructure the products.

    статья (522,0 K)
  • 99. Fillers and additives in plastics

    Plastic additives as a wide range of chemicals used by resin manufacturers, compounds and manufacturers to improve the properties, processing and characteristics of polymers. Features of their chemical composition and conditions of effective use.

    статья (14,4 K)
  • 100. Fluorine-Containing Heterocycles

    The method of synthesis of fluorinated heterocycles. The use of mono- and 1,3-dicarbonyl substrates and their nitrogen-containing analogues. Biological activity, physical and chemical properties of heterocyclic compounds with perfluoroalkyl groups.

    научная работа (642,7 K)
  • 101. Formation of Nanocrystalline Hydroxyapatite in Presence of Some Aminoacids

    Study of influence of amino acids on the hydroxyapatite formation. Study of mineral obtained by transmission electron microscopy and powder X-ray diffraction. Analysis of the phase composition, crystal size and lattice microstrains of calcium phosphate.

    статья (658,6 K)
  • 102. Geometry of nanoparticles as a determinant of their cytotoxicity

    Consideration of toxicity of the nanoparticles of the different elements. Investigation the effect of geometry (shape, size) of silver nanoparticles on their cytotoxicity. Shape, critical diameter, crystal lattice parameters of the nanoparticles.

    статья (190,2 K)
  • 103. Glucose biosensors - state of the art and prospects

    Rapid determination of glucose concentration in technical and biological systems as an important scientific and technical task of modern chemistry. Review of the latest technical solutions in this area. Problems of developing first-generation biosensors.

    статья (27,2 K)
  • 104. Growth of zinc oxide porous films via electrochemical anodization using glycerol based electrolyte

    Formation of the porous structure of zinc oxide. Morphological properties of anodized films. Methods of diffraction of X-rays and scanning electron microscopy. Analysis of electrochemical anodizing of zinc oxide in electrolyte based on glycerol.

    статья (505,8 K)
  • 105. Homologation of heterocycles by a sequential reductive opening lithiation–electrophilic substitution–cyclization

    Reductive opening of heterocycles as a source of functionalized organolithium compounds. Methods for homologation of heterocycles. Double lithiation of thianthrene. Phthalan: a versatile starting material. Homologation of six-membered heterocycles.

    статья (195,8 K)
  • 106. Humidity sensors based on SnO2-Co3O4-Nb2O5-Cr2O3semiconductor varistor ceramics

    Greater moisture sensitivity as a key factor for the sensory use of SnO2 based ceramics. General characteristics of the properties of oxide ceramics. Consideration of humidity sensors based on semiconductor varistor ceramics SnO2-Co3O4-Nb2O5-Cr2O3.

    статья (1,9 M)
  • 107. Hybrid epoxy-amine hydroxyurethane-grafted polymer

    Preparing cured hybrid epoxy-amine hydroxyurethane-grafted polymer by novel structure with lengthy epoxy-amine chains, pendulous hydroxyurethane units and a controlled number of cross-links. Using their increased flexibility for manufacturing of leather.

    статья (200,1 K)
  • 108. I Всероссийская конференция с международным участием на тему "Химический анализ и медицина"

    Методы анализа объектов окружающей среды, пищевых продуктов и сырья для их производства при помощи системы GO-xHT. Контроль содержания тяжелых металлов в различных биологических, фармацевтических пробах. Хроматографический анализ белков и пептидов.

    реферат (2,1 M)
  • 109. III-я группа периодической системы таблицы Д.И. Менделеева

    Изучение подгруппы химических составляющих 3-й группы периодической таблицы Менделеева. Обзор распространения в природе твёрдых металлов подгруппы скандия. Анализ применения сплавов на основе алюминия. Обоснование использование элементарного бора.

    презентация (1,1 M)
  • 110. In vitro деградация хитозановых мембран с различными условиями синтеза

    Исследование гидролитической деградации биополимерных плёнок, полученных методом полива на подложку 2% и 3% растворов хитозана, в 1% уксусной кислоте. Анализ потери массы хитозановых плёнок в зависимости от рН среды и скорости химических реакций.

    статья (659,6 K)
  • 111. Influence of complex-creative additives on oxidation of hydrocarbons

    Study the process of liquid hydrocarbon oxidation. Chemical reaction of cyclohexane with the organic additives of different nature. Composition of products and speed of oxidation of toluene and p-xylene in the presence of binary liquid catalysts.

    статья (203,5 K)
  • 112. Influence of solution PH on stability of fumed silica–polyacrylic acid systems

    The study and characterization of sustainable impact polyacrlic acid (anionic polymer) by adsorption on the surface of fumed silica (SiO). Monitoring changes in the suspension stability using a Turbiscan LabExpert with TLAb cooler cooling module at 25oC.

    статья (620,2 K)
  • 113. Influence of stress-dependent surface generation of interstitials on stacking fault growth and dopant diffusion in silicon

    Main calculation of activation volumes for interstitials and vacancie. Diffusion equations for point defects. Surface generation and recombination of point defects. Simulation of stacking fault growth. Simulation of stress-nediated dopant diffusion.

    статья (565,9 K)
  • 114. Influence of the parameters of hydrogen nitrogen nitrogen in a glow discharge on tribological and physico

    Modern and effective methods of hardening metals. Nitriding in a glow discharge in ammonia or in an anhydrous medium. Tribological and physicochemical properties of hardened surfaces obtained by nitriding with autonomous and interconnected BATR modes.

    статья (785,0 K)
  • 115. Influence of thermochemical activation of hydrolytic lignin by hydroxide of potassium on properties of carbon adsorbents

    Influence of increasing the temperature of thermochemical activation of up to 750 °C and increasing the dosage of potassium hydroxide to 2.1 g/g of activated carbon synthesis of hydrolytic lignin on the formation of adsorption properties of the AC.

    статья (20,5 K)
  • 116. Innovative technological scheme of Iraq oils refining

    Development of technological scheme for processing of oil extracted in Iraq. Characteristics and physico-chemical properties of the oils of Iraq. A description of the stages of oil refining. Calculations of material balances of each processing stage.

    статья (260,4 K)
  • 117. Interaction of red blood cells with fumed SiO2, Al2O3/SiO2 and TiO2/SiO2 by light scattering measurements

    Using the methods of flow cytometry and laser correlation spectroscopy study of the interaction of human erythrocytes with fumed oxides. Analysis of the results of determination of the scattering parameters and the degree of hemolysis of erythrocytes.

    статья (291,3 K)
  • 118. Interesting facts about oxygen

    Consideration of oxygen as a basic element of atmosphere of Earth, his constituents, oxides, behavior of oxygen as a result of combustion, use of oxygen in a fuel, way of his receipt, production and uses of oxygen in different industries of industry.

    презентация (397,4 K)
  • 119. Interfacial interactions in polyurethane elastomer-poly(vinyl chloride) blends

    Studies, the specificity of interphase interactions and features of the formation of nanoheterogeneous structure in polymer system. Determining the structure of interfacial region, the supramolecular structure and mechanical properties of the composites.

    статья (491,8 K)
  • 120. Introduction to analytical chemistry

    Concerning the separation, identification, and determination of the relative amounts of the components making up a sample. The relationship between analytical chemistry and the other sciences. Classification of modern analytical methods in chemistry.

    презентация (2,9 M)

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