Browsing 2015 by Issue Date

Now showing items 1-20 of 38

Effect of New Catalytic Systems on the Process of Anthracene Hydrogenation

Baikenov, M.I.; Baikenova, G.G.; Isabaev, A.S.; Tateeva, A.B.; Akhmetkarimova, Zh.S.; Tusipkhan, A.; Mataeva, A.Zh.; Esenbaeva, K.K. (ALLERTON PRESS INC, 2014-05-16)

The hydrogenation of anthracene in the resence of the nanosized catalysts based on iron β FeOOH and Fe(OA)3 (OA refers to oleic acid) and the spherical catalysts NiO/SiO2 and Fe2O3/SiO2 obtained from ash and slag from ...
DISINTEGRATION OF COPPER ORES BY ELECTRIC PULSES

Kurytnik, I; Nussupbekov, B. R.; Khassenov, A. K.; Karabekova, D. Z. (POLSKA AKAD NAUK, 2015)

The article is concerned with methods of ragging and grinding of copper ore. The proposed electric pulse technology is one of the energetically favorable methods of ragging and grinding of natural minerals and anthropogenic ...
Effect of morphology of ZnO nanowire arrays on photovoltaic and electron transport properties of DSSC

Ilyassov, B.R.; Ibraev, N.Kh.; Abzhanova, D.B. (IOP Publishing, 2015)

ZnO nanowire arrays were synthesized by hydrothermal method for 8, 10, and 12 hours. The array synthesized for 10h had the highest surface area and aspect ratio, and DSSC based on the 10h nanowire array revealed the best ...
Nanocatalytic Systems Based on Poly(ethylene glycol maleate)–Acrylamide Copolymers

Burkeev, M.Zh.; Kovaleva, A.K.; Tazhbaev, E.M.; Burkeeva, G.K.; Davrenbekov, S.Zh.; Kopbosynova, A.A.; Omasheva, A.V.; Mataev, M.M. (Pleiades Publishing, 2015)

The radical copolymerization of poly(ethylene glycol maleate) with acrylamide was performed for the ﬁ rst time to obtain 3D cross-linked polymers. The inﬂ uence of temperature, pH of the medium, and organic solvents on the ...
QUANTUM CHEMICAL ANALYSIS OF THE MOLECULAR STRUCTURE AND VIBRATIONAL SPECTRUM OF ARGLABIN

Abulyaissova, L.K.; Adekenov, S.M. (Journal of Structural Chemistry, 2015)

Results of a theoretical study of the molecular structure of arglabin are pesented. Quantum chemical calculations of the geometry and physicochemical characteristics of arglabin are performed by the semi-empirical РМ6 ...
The effect of pre-irradiation defects on the recombination luminescence in activated crystals K2SO4

Кoketai, T.; Тagayeva, B.; Тussupbekova, A.; Mussenova, E. (ELSEVIER SCIENCE BV, 2015)

The recombinational luminescence of crystals of K2SO4-Mn2+ and K2SO4-Ni2+ is studied in the article. It is established that impurity ions form the radiation induced centers. The cause of changes of the distribution of ...
A MECHANISM OF FORMATION OF RADICALS IN CRYSTAL KDP (KH2PO4)

Кoketai, T.; Тagayeva, B.; Тussupbekova, A.; Mussenova, E. (ELSEVIER SCIENCE BV, 2015)

The mechanisms of formation of A-radicals in the crystal K2SO4. Calculations established that the excitation of oscillations on the O-H bond in the triplet excitons in the excited state leads to a situation vibronic ...
Effect of cations (Mg2+, Zn2+, Cd2+) on formation of the mineral phase in Ca(NO3) 2 -Mg(NO3) 2-Na2HPO4-H2O system

Golovanova, O.A.; Shlyapov, R.M.; Amerkhanova, Sh.K.; Uali, A.S.; Vlasov, V.A. (IOP PUBLISHING LTD, 2015)

Synthesis of hydroxyapatite in the system Ca(NO3)2-Me(NO3)2-NaHPO4-H2O with pH in the range of 6-12.2 is performed, and hydroxyapatite of B-type is formed. The effect of magnesium, zinc and cadmium ions on the properties ...
Multiphase composite coatings: structure and properties

Yurov, V.M.; Guchenko, S.A.; Platonova, E.S.; Syzdykova, A.Sh.; Lysenko, E.N. (IOP PUBLISHING LTD, 2015)

The paper discusses the results of the research into the formation of ion-plasma multiphase coatings. The types of the formed structures are found to be not so diverse, as those formed, for example, in alloy crystallization. ...
The study of the structural and superconducting properties of YBaCuO films produced by laser ablation method

Khuanbay, Y.; Makhanov, K.M.; Abzhanova, D.B.; Turebaeva, G.B.; Smakova, N.S. (IOP PUBLISHING LTD, 2015)

Microstructure and oxygen stoichiometry of YBaCuO films manufactured by laser ablation are investigated. Dependence of the specific electrical resistivity and superconducting parameters of films on microstructure and oxygen ...
Effect of ion irradiation on tribological properties of composite coatings

Platonova, E.S.; Guchenko, S.A.; Syzdykova, A.Sh.; Laurinas, V.Ch.; Yurov, V.M.; Lysenko, E.N.; Mylnikova, T.S. (IOP PUBLISHING LTD, 2015)

The paper discusses the results of the research in the effect of ion irradiation on tribological properties of multiphase ion-plasma coatings. It is shown that all the investigated coatings behave differently under ion ...
Effect of electric pulse processing on physical and chemical properties of inorganic materials

Sakipova, S.E.; Nussupbekov, B.R.; Ospanova, D.; Khassenov, A.; Sakipova, Sh.E. (IOP PUBLISHING LTD, 2015)

This article analyzes various aspects of the practical application of electric pulse technology of industrial raw materials processing as a result of a spark electric discharge in a liquid solution of the raw material ...
Synthesis and investigation of the geometric characteristics of titanium dioxide nanotubes

Serikov, T.M.; Ibrayev, N.Kh.; Gladkova, V.K. (IOP PUBLISHING LTD, 2015)

The nanotubes of titanium dioxide were produced by electrochemical anodization of metallic titanium in a fluorine-containing electrolyte. The influence of the electrolyte composition, voltage and time of anodization on the ...
Thermal Destruction of Copolymers of Polypropylene Glycol Maleate with Acrylic Acid

Burkeev, M.Zh.; Sarsenbekova, A.Zh.; Tazhbaev, E.M.; Figurinen, I.V. (SPRINGER, 2015)

The results from thermogravimetric and kinetic studies of copolymers of polypropylene glycol maleate with acrylic acid at different molar ratios are presented. The results from conventional thermogravimetric studies are ...
Studies energy efficiency of the renewable sources use considering climate in Latvia

Sakipova, S.; Jakovics, A.; Gendelis, S. (ELSEVIER SCIENCE BV, 2015)

The paper discusses problems of energy supply of buildings using renewable sources given the local climatic conditions. The meteorological conditions in Latvia and Riga for last year were analyzed. In paper shows examples ...
Heat Capacities and Thermodynamic Functions of New Cobalt Manganites LaM2IICoMnO6 (MII—Mg, Ca, Sr, Ba) in the 298.15–673 K Temperature Range

Kasenov, B.K.; Turtubaeva, M.O.; Amerkhanova, Sh.K.; Kasenova, Sh.B.; Sagintaeva, Zh.I.; Kuanyshbekov, E.E.; Seisenova, A.A.; Smagulova, D.I. (Pleiades Publishing, 2015)

Temperature dependences of the heat capacities of cobalt manganites LaM2 CoMnO6 (MII = Mg,Ca, Sr, Ba) are investigated by means of dynamic calorimetry in the temperature range of 298.15–673 K. It is established that cobalt ...
Equilibrium Kinetic Analysis of a Model Mixture of Anthracene and Benzothiophene

Baikenov, M.I.; Tateeva, A.B.; Akhmetkarimova, Zh.S.; Tusipkhan, A.; Mataeva, A.Zh.; Esenbaeva, K.K. (Allerton Press, 2015)

The kinetic and thermodynamic parameters of the hydrogenation of an anthracene–ben􀀀 zothiophene model mixture were calculated. The rate constants of forward and reverse reactions, the equilib􀀀 rium constant, the activation ...
Dependence of the Efficiency of Triplet-Triplet Energy Transfer on the Distance Between the Donor and Acceptor

Ibraev, N.Kh.; Seliverstova, E.V.; Artyukhov, V.Ya. (SPRINGER, 2015-01)

The triplet-triplet and singlet-singlet energy transfer is investigated both experimentally and theoretically in the anthracene - Nile red system. Quantum-chemical investigations of the special features in the formation ...
Heat Capacity and Thermodynamic Functions of Cerium Tellurites in the Range of 298.15–673 K

Rustembekov, K.T.; Dyusekeeva, A.T.; Fomin, V.N.; Makhatova, N.A. (RUSSIAN JOURNAL OF PHYSICAL CHEMISTRY A, 2015-02)

The isobaric heat capacity of cerium tellurites is studied in the range of 298.15–673 K and used as a basis for deriving dependences ~ f(T) and determining their thermodynamic functions. Dependences ~ f(T) are found to ...
FRET-designeddye-sensitizedsolarcellstoenhance light harvesting

Ibrayev, N.; Seliverstova, E.; Nuraje, N.; Ishchenko, A. (ELSEVIER SCI LTD, 2015-03)

Forster resonance energy transfer between the xanthene dye (donor of energy) and a new polymethine dye (acceptor of energy) was studied on the surface of TiO2 films in dye-sensitized solar cells. It was shown that the ...

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