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сколько стоит заказать работу? коллекция "revolution"
Главная Коллекция "Revolution" Химия
  • 141. L-ментол, рицинолевая кислота и 4-метилтетрагидропиран в направленном синтезе эндо- и экзогормонов насекомых

    Направленный синтез низкомолекулярных биорегуляторов насекомых. Химические превращения производных 4-метилтетрагидропирана, l-ментола и рицинолевой кислоты. Синтез эндо- и экзогормонов насекомых на основе продуктов алкилирования ацетоуксусного эфира.

    автореферат (455,9 K)
  • 142. Light scattering by silver nanoparticles in colloid solutions for improved photovoltaic devices

    Incorporation of metal nanoparticles into photovoltaic cells attracts much attention last years as a promising way for efficiency improvement by light trapping. Direction of light scattering and a red shift of light scattering efficiency maxima.

    статья (487,9 K)
  • 143. Mechanism and kinetic regularities of inactivating effects of cavitation on microorganisms

    Study of the disinfecting effect of the physical and chemical properties accompanying hydrodynamic cavitation on the sanitary index of microorganisms in water. Model for determining the result of disinfection in conditions of hydrodynamic cavitation.

    статья (674,5 K)
  • 144. Mechanisms of gas-coal thermal preparation in electromagnetic field

    Studying of the structure of low-metamorphosed coal vitrain macromolecules. The mechanism of thermal preparation in gas coal electromagnetic field is shown. The influence mechanism of the high-frequency electromagnetic energy on the coal particle.

    статья (119,7 K)
  • 145. Microwave irradiation for accelerating organic reactions – part II: six-, seven-membered, spiro, and fused heterocycles

    Heterocycles with one, two, three and four heteroatoms. Fused heterocycles incorporating pyridine rings. Quinolines, isoquinolines, and their fused rings. Spiroheterocycles and a solvent-free one-pot reaction of a mixture of meldrum’s or barbituric acid.

    учебное пособие (867,0 K)
  • 146. Microwave Irradiation for Accelerating Organic Reactions. Part I: Three-, Four- and Five-Membered Heterocycles

    Synthesis and reactions of heterocyclic compounds in chemistry. Three- and four-membered heterocycles: heterocycles with one heteroatom (oxiranes, thiiranes, aziridines). Five-membered heterocycles: heterocycles with one, two, three and four heteroatom.

    статья (784,5 K)
  • 147. Modeling effect of the main synthesis parameters on the properties of carboxymethyl cellulose

    Carboxymethyl cellulose as the one of largest and most widely used ether. Creating a uniform distribution of reagents in the area of chemical reactions - the process which underlying the modeling of macrokinetics carboxymethylation of cellulose.

    статья (65,0 K)
  • 148. Modification of activated carbon KAU surface properties

    Treating the properties of oxidized activated carbon KAU by different temperatures in inert atmosphere were studied by means of DTA, Boehm titration, XPS and AFM methods and their catalytic activity in hydrogen sulphide oxidation was established.

    статья (634,0 K)
  • 149. Molecular structures

    Molecular geometry - the general shape of a molecule or the arrangement of atoms in three dimensional space. Physical and chemical properties of an atom. Main examples of predicting molecular geometry. The valence shell electron and her repulsion.

    презентация (1,7 M)
  • 150. Morphological and electronic characteristics of nanoalumina alone and in high-temperature (fumed) and low-temperature (mechanical) mixtures with nanosilica

    Crystalline and electronic structures of nanoalumina alone and in different mixtures with nanosilica. X-ray diffraction and ultrasoft X-ray emission spectroscopy. Pore size distributions calculated. Resalts of the OKa emission bands of alumina in samples.

    статья (301,4 K)

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