Автор(ы): Tungatarova S. A.*Yergaziyeva G. Y.*Chanysheva I. S.*

Объем документа: 

МРНТИ: 31.15.28

Ключевые слова: каталитическая конверсия биоэтанола*катализаторы*методы электронной микроскопии*

Реферат: Catalytic conversion of ethanol to ethylene on Cu-, Cr- and Ce- containing catalysts supported on alumina was investigated.Cerium-containing catalysts were studied by electron microscopy and defined phases and particle sizes. Optimal conditions (W = 6000 h-1, Cethanol = 19.7 g/m3 and T = 400әC) of the catalytic conversion of ethanol into ethylene in 82% yield with 94% ethanol conversion with 87.2% selectivity were found.

Автор(ы): Tungatarova S. A.*Baizhumanova T. S.*Zhumabek M.*Kassymkan K.*

Объем документа: 

МРНТИ: 31.15.27

Ключевые слова: синтез-газ*платина*рутений*катализаторы*конверсия метана*блочные сотовые носители*

Реферат: Supporting methods of low percentage catalysts based on noble metals on the metal block honeycomb carriers were developed. It was found that increasing the concentration of methane up to 34% in initial reaction mixture does not give the desired increase its conversion in the implementation of the selective catalytic oxidation of methane on unreduced 1.0% Pt-Ru/2%Ce/(?+?)-Al2O3 catalyst supported on a metallic block carrier. However, when processing of 4.4% CH4 is achieved 100% conversion of methane to synthesis gas with the formation of 8.8% H2 and 4.4% CO without traces of CO2 at the optimum ratio of H2/CO = 2.0. It has been shown that T = 1173 K, V = 1?104 h-1, ? = 0.36 s are optimum conditions of selective catalytic oxidation of methane to synthesis gas.

Автор(ы): Abdukhalykov D. B.*Tungatarova S. A.*Baizhumanova T. S.*Yergaziyeva G. Y.*Zhumabek M.*Kaisar K.*

Объем документа: 

МРНТИ: 31.15.27

Ключевые слова: метан*нефтехимический синтез*окисление*полиоксидный катализатор*гетерополисоединения*алканы*

Реферат: Catalytic methods for oxidative conversion of the methane of natural gas into the product of organic synthesis: formaldehyde and ethylene were discussed. Content of polyoxide catalysts and optimal conditions for synthesis organic compounds were developed.

Автор(ы): Полимбетова Г. С.*Ибраимова Ж. У.*Борангазиева А. К.*

Объем документа: 

МРНТИ: 31.15.28

Ключевые слова: дибутилфосфит*трибутилфосфат*катализатор*фосфорорганические соединения*бутанол*

Реферат: Разработан экологически эффективный каталитический способ получения эфиров фосфористой и фосфорной кислот путем окисления фосфида цинка кислородом в растворе галогенидов меди (II) в бутаноле при 50-70 С. Подобраны оптимальные условия и предложен окислительно-восстановительный механизм каталитического процесса.

Автор(ы): Dergacheva M. B.*Urazov K. A.*

Объем документа: 

МРНТИ: 31.15.33

Ключевые слова: электровосстановление тонких пленок*электолиты*кислоты*

Реферат: In the present study, single-step electrodeposition of a CuInGaSe2 film from the sulfosalicylic acid electrolyte containing Cu(II), In(llI), Ga(III), and Se(lV) species was examined. It was showed that individual Ga(III) ions don\'t reduce at glass carbon electrode in selected conditions. Deposition of the desired CuInGaSe2 film as the main compound was achieved by fixing appropriate applied potentials. The analysis of cyclic voltammetry curves for joint reduction of two, three and four ions composed this semiconductor compound allowed to chose the optimal conditions for electrodeposition. The applied potential should be more negative, then -700 mV, ratio concentration ions in electrolyte Cu(II): Se(lV):In(III):Ga(III) equal 1:2:4:4, t= ?70 әC. It was fabricated p-type CuInGaSe2 as a single phase. A new possible pathway to prepare sphalerite structure thin films from simple single-step electrodeposition of a quaternary precursor from sulfosalicylic acid should be used for photovoltaic application.

Автор(ы): Myrzabekov B. E.*Bayeshov A. B.*Ivanov N. S.*Bayeshova A. K.*Zhurynov M. Zh.*

Объем документа: 

МРНТИ: 31.15.33

Ключевые слова: платина*дисперсность порошка*окислительно-восстановительная система*импульсный ток*

Реферат: Platinum (IV) ions reduction process was firstly studied at polarization induced by pulsed cathode current in the presence of titanium ions (IV). It was demonstrated that at the current density variation between 1000 and 6000 A/m2 and sulfuric acid concentration between 50 and 300 g/L, current output is reduced, and with increasing of the platinum concentration (IV) and temperature of the solution is elevated. It also has been established that with increasing of the cathode current, the mean particle size is decreased and achieves 20 nm. It was demonstrated, that in the presence of the titanium (IV)-titanium (III) oxidation-reduction system, the platinum powder dispersion is increased.

Автор(ы): (Wilschut L. I.*(Addink E. A.*(Heesterbeek J. A.*(Dubyanskiy V. M.*(Davis S. A.*(Laudisoit A.*(Begon M.*Burdelov L. A.*Atshabar B. B.*(de Jong S. M.*

Объем документа: С. 81-94

МРНТИ: 76.33.43

Ключевые слова: зоонозное инфекционное заболевание*популяция больших песчанок*метод стратификации*картирование распределения носителей инфекции*карты нор*эпидемиологические модели чумы*

Реферат: Plague is a zoonotic infectious disease present in great gerbil populations in Kazakhstan. Infectious disease dynamics are influenced by the spatial distribution of the carriers (hosts) of the disease. The great gerbil, the main host in our study area, lives in burrows, which can be recognized on high resolution satellite imagery. In this study, using earth observation data at various spatial scales, we map the spatial distribution of burrows in a semi-desert landscape. The study area consists of various landscape types. To evaluate whether identification of burrows by classification is possible in these landscape types, the study area was subdivided into eight landscape units, on the basis of Landsat 7 ETM+ derived Tasselled Cap Greenness and Brightness, and SRTM derived standard deviation in elevation. In this study, an innovative stratification method using high- and medium resolution imagery was applied in order to map host distribution on a large spatial scale. The burrow maps we developed will help to detect changes in the distribution of great gerbil populations and, moreover, serve as a unique empirical data set which can be used as input for epidemiological plague models. This is an important step in understanding the dynamics of plague.

Автор(ы): Орынбаев М. Б.*Рыстаева Р. А.*Керимбаев А. А.*Копеев С. К.*Коспанова М. Н.*Кыдырбаев Ж. К.*

Объем документа: С. 27-34

МРНТИ: 68.41.53

Ключевые слова: массовая гибель сайгаков*пастереллез*клостридия*гемоспоридиоз*иксодовые клещи*тейлериоз*

Реферат: В статье представлены результаты исследований по выяснению причины массовой гибели сайгаков в западном Казахстане. Показано, что массовая гибель сайгаков в Жанибекском районе Западно-Казахстанской области в период с 18 по 27 мая 2010 г. вызвана пастереллезом, развившимся на фоне гемоспоридиоза. Выделенные из патологического материала клостридии дополнительно усугубили течение установленных болезней сайгаков.

Автор(ы): Sansyzbay A. R.*(Erofeeva V. K.*Khairullin B. M.*Sandybayev Y. T.*Kydyrbayev Zh. K.*Mamadaliyev S. M.*Kassenov M. M.*(Sergeeva M. V.*(Romanova J. R.*(Krivitskaya V. Z.*(Kiselev O. I.*(Stukova M. A.*

Объем документа: С. 1314-1319

МРНТИ: 62.37.41

Ключевые слова: инактивированные вакцины*адъювантные цельновирионные вакцины*иммунногенетика*вакцины против гриппа*

Реферат: In this study, we assessed the immunogenicity and safety of one dose of a whole virion inactivated pre-pandemic influenza vaccine adjuvanted with aluminum hydroxide in humans. The vaccine strain was made by reverse genetics from the highly pathogenic avian A/chicken-Astana/6/05 (H5N1) clade 2.2 strain isolated from a dead bird on Kazakhstan.

Автор(ы): (Dolya N.*(Rojas O.*(Kosmella S.*(Tiersch B.*(Koetz J.*Kudaibergenov S. E.*

Объем документа: С. 1114-1121

МРНТИ: 31.15.35

Ключевые слова: золотые наночастицы*иммобилизация*ионные жидкости*полимерные гели*полиакриламид*

Реферат: This paper focuses on two different strategies to incorporate gold nanoparticles (AuNPs) into the matrix of polyacrylamide (PAAm) hydrogels. Poly(ethyleneimine) (PEI) is used as both reducing and stabilizing agent for the formation of AuNPs. In addition, the influence of an ionic liquid (IL) (i.e., 1-ethyl-3-methylimidazolium ethylsulfate) on the stability of the nanoparticles and their immobilization in the hydrogel is investigated The results show that AuNPs surrounded by a shell containing PEI and IL, synthesized according to the \"one-pot\" approach, are much better immobilized within the PAAm hydrogel. Hereby, the IL is responsible for structural changes in the hydrogel as well as the improved stabilization and embedding of the AuNPs into the polymer gel matrix.