Электронный каталог

35
R24
Rasulov, S. R.
    Development of effective catalysts for processing C3-C4 Hydrocarbons. [Текст] / S. R. Rasulov, G. R. Mustafayeva // News of national academy of sciences of the republic of Kazakhstan. . - 2021. - №3. - P. 87-93
ББК 35

Рубрики: chemical Technology

Кл.слова (ненормированные):
refinery gases -- 3-C4 hydrocarbons -- zeolite-containing catalyst -- modifiers -- reaction-regeneration cycles.
Аннотация: The aim of the article is to study the effect of preparation and activation methods of a modified zeolite-containing catalyst on the activity and stability of catalytic properties displayed by it during the conversion of C3-C4 hydrocarbons. During the experiment, the industrial cracking catalyst OMNIKAT, which is a zeolite in the sodium form, was used as the initial one. Zinc, gallium, and REE (rare earth elements) were sequentially applied to decationized samples of this catalyst by ion exchange, impregnation, and dry mechanical mixing, and the effect of these methods on the catalytic properties of the zeolite-containing catalyst was observed. As a result of a comparative analysis of the regularities of aromatization of C3-C4hydrocarbons, it was found that the mechanical mixing method is the most preferable, since it provides the best process performance.
Держатели документа:
WKU
Доп.точки доступа:
Mustafayeva, G.R.

35
A29
Akurpekova, A. K.
    Cracking of vacuum gas oil on hlay -containing catalysts with a multicomponent matrix based on montmorilionite. [Текст] / A. K. Akurpekova // News of national academy of sciences of the republic of Kazakhstan. . - 2021. - №4. - P. 6-13
ББК 35

Рубрики: chemical Technology

Кл.слова (ненормированные):
catalytic cracking -- montmorillonite -- binder -- strength -- gasoline -- zeolite -- acidity -- acuum gas oil
Аннотация: it is shown that additions of montmorillonite in the Na form contribute to a significant increase in the crushing strength of granules of cracking catalysts while maintaining their activity in the yield of gasoline. Comparison of the results of the cracking of vacuum gas oil on catalysts of the same composition, but with and without a NaMM binder, showed that the introduction of NaMM does not significantly affect the gasoline yield. Samples of catalysts of the same composition, but with the use of Al-pillared MM in Na-and CaNa-exchangeable forms and with the addition of NaMM as a binder, showed similar activity in the yield of gasoline, which is explained by the similarity of the elemental compositions, textural and acidic properties of the studied catalysts. The maximum yield of gasoline, equal to 44.8% and light gas oil of 14.6%, was obtained for Al (2.5) CaNaHMM + NaMM with the addition of a binder and crushing strength of 60-70 N / cm2.
Держатели документа:
WKU
Доп.точки доступа:
Zakarina, N.A.
Kornaukhova, N.A.
Dalelkhanuly, O.
Zhumadullaev, D.A.

24
Z63
Zhumabek, M.
    Ni-Al-Mg-Mn composite catalysts for partial oxidation of natural gas. [Текст] / M. Zhumabek, G. N. Kaumenova, A. Manabayeva, R. O. Sarsenova, S. O. Kotov // News of national academy of sciences of the republic of Kazakhstan. . - 2021. - №4. - P. 19-26
ББК 24

Рубрики: chemistry

Кл.слова (ненормированные):
catalytic oxidation -- methane -- synthesis-gas -- nickel -- magnesium
Аннотация: the problem of rational utilization of natural and associated petroleum gases and the cessation of their flaring is one of the acute and unresolved environmental problems. The aim of this work is to develop effective thermally stable catalysts ofa new generation for the processes of oxidative conversion of light alkanes of natural and associated gas into synthesis gas. The results of partial oxidation of the methane of natural gas on the catalysts prepared by solution combustion synthesis are presented. Investigation of the activity of catalysts produced from initial mixture of Ni(NO3)2-Al(NO3)3-Mg(NO3)2-Mn(NO3)2+ urea of different composition was carried out for the production of synthesis-gas. It was found that the optimal conditions for producing of synthesis-gas are: CH4conversion higher than 95%, yield of target products: Н2-97 -99% and СО -40 -43%, Т = 900оС, space velocity –2500 and 6500 h-1. The catalysts were studied by X-ray diffraction, transmission electron microscopy, specific surface area, pore volume and average pore diameter. The presence in the catalysts of simple and mixed oxides, metal aluminates and spinel-type structures, the presence of which contributes to the active work of catalysts for oxidativeconversion of CH4, has been established.
Держатели документа:
WKU
Доп.точки доступа:
Kaumenova, G.N.
Manabayeva, A.
Sarsenova, R.O.
Kotov, S.O.

35
M23
Mammedov, K.
    Application of new corrosion inhibitor foroilfield equipment and pipelines for improving the ecological security. [Текст] / K. Mammedov // News of national academy of sciences of the republic of Kazakhstan. . - 2021. - №4. - P. 32-39
ББК 35

Рубрики: chemical Technology

Кл.слова (ненормированные):
environment -- complex reagent -- pipeline -- aggressive environment -- corrosion -- cavitation -- viscosity -- paraffin deposition
Аннотация: n addition, to increase the viscosity reduction efficiency of the obtained reagent, the mechanism of complex application of the cavitation process and the reagent was described based on the positive results of the experiments. Also, the results of tests via "cold finger" method showed that new reagent has 53% efficiency in paraffin deposition inhibiting at its optimal anti-corrosion concentration (500 mg /l).As a result of the conducted field tests, it was revealed that theuse of the new multifunctional reagent ensures the continuous operation of pipeline network and reliable environmental protection.
Держатели документа:
WKU
Доп.точки доступа:
Aliyev , S.
Nurullayev, V.

35
M97
Musina, G. N.
    Processing of coal tar into petrochemicals and fuel products. [Текст] / G. N. Musina // News of national academy of sciences of the republic of Kazakhstan. . - 2021. - №4. - P. 40-47
ББК 35

Рубрики: chemical Technology

Кл.слова (ненормированные):
coal -- hydrogenation -- peat -- cavitation -- petrochemicals -- fuels -- resin -- phenol
Аннотация: the article summarizes the results of the research. The influence of cavitation-wave action on coal tar, which leads to a change in the rheological properties (density, viscosity), as a result of an increase in the yield of light and medium fractions, is investigated, and the process of catalytic hydrogenation of coal in the presence of a catalytic additive and mine methane is studied.
Держатели документа:
WKU
Доп.точки доступа:
Takibayeva, A.T.
Kulakov, I.V.
Zhorabek, A.A.
Shakhmetova, G.A.

26.3
N92

    Numerical modeling of the stress-strain state of the Kurzhunkul open-pit mine [Текст] / S. А. Sedina, N. O. Berdinova, G. B. Abdikarimova [и др.] // Известия Национальной Академии наук Республики Казахстан. - 2021. - №6. - Р. 110-117
ББК 26.3

Рубрики: Геология

Кл.слова (ненормированные):
напряжённо-деформированное состояние -- карьер -- распределение главных напряжений -- устойчивость массива -- двухмерная численная модель
Аннотация: Напряженно-деформированное состояние горных РїРѕСЂРѕРґ является РѕРґРЅРёРј РёР· главных факторов, определяющих величину Рё характер РіРѕСЂРЅРѕРіРѕ давления, РѕС‚ которого зависит безопасность разработки глубоких карьеров. РџСЂРё ведении горных работ необходимо понимание, РіРґРµ Р±СѓРґСѓС‚ формироваться Р·РѕРЅС‹ повышенных главных компонент нормальных Рё максимальных касательных напряжений. Р’ статье приведены результаты численного моделирования напряженно-деформированного состояния Куржункульского карьера РІ двухмерной постановке методом конечных элементов РІ программном комплексе MIDAS GTS NX. РџСЂРё математическом моделировании были учтены реально действующие РІ массиве напряжения, определенные натурными измерениями. Приведена модель, основанная РЅР° результатах моделирования, которую возможно применять для прогнозирования изменения максимального градиента горизонтального напряжения СЃ увеличением глубины отработки Куржункульского карьера. РџРѕ итогам моделирования бортов РІ СЋРіРѕ-восточном северо-западном направлениях были определены участки, РіРґРµ наблюдается неблагоприятное воздействие максимальных касательных напряжений РЅР° прибортовой массив Рё возможно превышение максимальными касательными напряжениями UDC 622.271: 622.83 Sedina S.Рђ. 1*, Berdinova N.O. 1, Abdikarimova G.B. 1, Altayeva A.A. 1, Toksarov V.N. 2 1 Branch of the Republican State Enterprise В«National center for complex processing of mineral raw materials of the Republic of KazakhstanВ» D.A. Kunayev Mining Institute, Almaty, Kazakhstan; 2 Mining Institute of the Ural Branch of the Russian Academy of Sciences, Perm, Russia. Р•-mail: SSA2704@mail.ru NUMERICAL MODELING OF THE STRESS-STRAIN STATE OF THE KURZHUNKUL OPEN-PIT MINE Abstract. The stress-strain state of rocks is one of the main factors that determine the magnitude and nature of rock pressure, on which the safety of deep open pit development depends. When conducting mining operations, it is necessary to understand where zones of increased principal components of normal and maximum shear stresses form. The article presents the results of numerical modeling of the stress-strain state of the Kurzhunkul pit in a two-dimensional formulation by the finite element method in the MIDAS GTS NX software package. In mathematical modeling, the stresses actually acting in the array, determined by field measurements, were taken into account. A model based on the results of modeling is presented, which can be used to predict changes in the maximum gradient of horizontal stress with an increase in the depth of mining of the Kurzhunkul open-pit mine. Based on the results of the modeling of the sides in the southeastern north-western directions, areas were identified where there is an unfavorable effect of the maximum shear stresses on the side rock mass and the maximum shear stresses (н µнјЏн µнјЏн µнјЏн µнјЏн µн±љн µн±љн µн±љн µн±љн µн±Ћн µн±Ћн µн±Ћн µн±Ћн µн±Ћн µн±Ћн µн±Ћн µн±Ћ) may exceed the shear strength. Also, an assessment of the influence of the main components of normal and maximum shear stresses on the stability of the near-rock pit rock mass is given. It has been determined that the geomechanical state of the sides of the Kurzhunkul open-pit mine is characterized by the action of low compressive stresses. The values of the maximum compressive stresses vary from 5.52 MPa to 14.25 MPa, increasing from the day surface to the bottom of the open pit. The minimum component of the principal stresses varies from 0.70 to 9.4 MPa. The values of tensile minimum stresses н µнјЋн µнјЋн µнјЋн µнјЋн µн±љн µн±љн µн±љн µн±љн µн±–н µн±–н µн±–н µн±–н µн±–н µн±–н µн±–н µн±– are significantly less than the calculated values of tensile stresses н µнјЋн µнјЋн µнјЋн µнјЋн µн±ќн µн±ќн µн±ќн µн±ќ in the sample and do not affect the stability of the pit edges. Key words: stress-strain state, pit, distribution of principal stresses, rock mass stability, a two-dimensional numerical model. Introduction. The problem of predicting the tectonic effect on the stress state of the rock mass is important in geomechanics today. If the natural stresses in the sides of the pit slope are high and exceed the strength of the rock mass, then its deformation occurs and large zones of weakened rocks are created, which can then collapse under the influence of their own weight [1, 2]. Based on the results of field studies, it was determined that the stress-strain state of the rock masses of the Kurzhunkul pit was attributed to the gravitational-tectonic type [3]. The stability of quarry walls in rocky tectonically stressed rocks is determined, first, by the parameters of the stressstrain state, structural disturbance, and strength characteristics of the rock mass. Materials and methods. To substantiate the rational design parameters of the Kurzhunkul opencast mine, calculations were performed to estimate the stress-strain state of the rock mass in a two-dimensional (2D) formulation by the finite element method using the MIDAS GTS NX software package. Finite element method (FEM) calculation in MIDAS GTS NX can be conditionally divided into the following stages: - setting the computational domain with the selection of characteristic areas and mechanical properties for the selected areas; предела прочности РЅР° СЃРґРІРёРі. Также приведена оценка влияния главных компонент нормальных Рё максимальных касательных напряжений РЅР° устойчивость прибортового массива карьера. Определено, что геомеханическое состояние бортов Куржункульского карьера характеризуется действием невысоких сжимающих напряжений. Величины максимальных сжимающих напряжений изменяются РІ пределах РѕС‚ 5,52 РњРџР° РґРѕ 14.25 РњРџР°, увеличиваясь РѕС‚ дневной поверхности Рє РґРЅСѓ карьера. Минимальная компонента главных напряжений меняется РѕС‚ 0,70 РґРѕ 9,4 РњРџР°. Значения растягивающих минимальных напряжений значительно меньше расчетных значений напряжений РЅР° растяжение РІ образце Рё РЅРµ оказывают влияния РЅР° устойчивость бортов карьера
Держатели документа:
ЗКУ
Доп.точки доступа:
Sedina, S.А.
Berdinova, N.O.
Abdikarimova, G.B.
Altayeva, А.А.
Toksarov, V.N.

66
Б 12
Байкүшікова, Г.
    Қазақстан мен Өзбекстан арасындағы экономикалық байланысқа жаңа көзқарастар [Текст] / Г. Байкүшікова, Г. Әпсаттарова // Central Asia's Affairs. - 2022. - №1. - Б. 39-47
ББК 66

Рубрики: экономика

Кл.слова (ненормированные):
экономикалық қатынастар -- Орталық Азия -- Қазақстан -- Өзбекстан -- стратегия -- аймақ -- сыртқы саясат -- экономические отношения -- стратегия -- Казахстан -- Узбекистан -- регион -- Центральная Азия -- внешняя политика -- Economic Relations -- Region -- Kazakhstan -- Uzbekistan -- Central Asia -- Strategy -- Foreign Policy
Аннотация: Мақалада Қазақстан мен Өбекстан арасындағы экономикалық байланыстың жаңа тәсілдері талқыланып, қазіргі кезеңдегі екіжақты экономикалық қатынастардың дамуына баға берілген, Өзбекстан президенті Шавкат Мирзиеевтың жаңа сыртқы саяси бастамаларының екіжақты қарым-қатынастарға тигізер әсері туралы баяндалған. Авторлар мақалада 2000 жылдардан бастап қазіргі кезге дейінгі екіжақты экономикалық қатынастардың қысқаша эволюциясын ашып көрсеткен. Авторлар Өзбекстанның бірінші басшысы Ислам Каримов және Өзбекстанның қазіргі Президенті Шавкат Мирзиеевтың саясатын салыстыра отырып, бұл кезеңде Орталық Азиялық интеграцияның даму деңгейін сипаттаған. Авторлардың пайымдауынша, Қазақстанның Өзбекстанға болған қарым-қатынасы әрқашан ашық сипатта болып, интеграцияға бағытталған. Алайда, Өзбекстанның акциздік саясаты, Каримовтың жүргізген саясатының нәтижесінде Қазақстан мен Өзбекстан арасындағы қарым-қатынас өзара түсіністік, достық сипатында болып, өзара сауданың көлемі баяу дамыды. Мысалы, Каримов басшылығында 2000 жылдары екі елдің жылдық тауар айналымы 295,4 млн долларды құраған болса, 2021 жылы Мирзиеевтың бастамасымен 1 қаңтардан бастап Өзбекстан тасымалданатын тауарларға қатысты акциздерді қолдануды тоқтатқаннан кейін 4 айдың ішінде қаңтар-сәуір айларындағы екіжақты тауар айналымы 1,2 млрд долларды құрады. Бұл 2000 жылдармен салыстырғанда шамамен 12 есеге көп. Авторлар тек екіжақты сауда айналымының динамикасын ғана емес, қазіргі кезеңдегі жүзеге асырылып жатқан екіжақты бірлескен жобаларды, көлік-логистика саласындағы жетістектерді оң бағалайды.The article discusses new approaches to economic relations between Kazakhstan and Uzbekistan, assesses the development of bilateral economic relations at the present stage, tells about the impact of new foreign policy initiatives of the President of Uzbekistan Shavkat Mirziyoyev on bilateral relations . In the article, the author reveals a brief evolution of bilateral economic relations from the 2000s to the present. Comparing the policy of the first head of Uzbekistan Islam Karimov and the current President of Uzbekistan Shavkat Mirziyoyev, the author described the level of development of Central Asian integration at this stage . The author believes that Kazakhstan's relations with Uzbekistan are always open and aimed at integration . However, as a result of Uzbekistan's excise policy pursued by Karimov, relations between Kazakhstan and Uzbekistan were of the nature of mutual understanding, friendship, and the volume of mutual trade developed slowly . For example, if in Karimov's leadership in the 2000s, the annual trade turnover of the two countries amounted to $ 295 .4 million, then in 2021, at Mirziyoyev's initiative, for 4 months after Uzbekistan stopped applying excise taxes on transported goods, the bilateral trade turnover for January-April amounted to $ 1 .2 billion . This is about 12 times more than in 2000 . The author positively assesses not only the dynamics of bilateral trade turnover, but also the bilateral joint project being implemented at the present stage, achievements in the transport and logistics sphere .
Держатели документа:
БҚУ
Доп.точки доступа:
Әпсаттарова , Г.

32.973
D 98
Dyussembekova, M.
    Digital technologies and their impact on the educational policy of the state [Текст] / M. Dyussembekova, Y. Amantayev, G. Baishan // Қоғам & Дәуір. - 2022. - №1. - б. 52-61
ББК 32.973

Рубрики: Компьютерлер (электрондық есептеу машиналары)

Кл.слова (ненормированные):
digital technologies -- innovations -- innovative technologies -- digital education -- state competitiveness -- digitalization -- digitalization policy
Аннотация: The article also presents the results of the analysis of the work on the introduction and use of digital technologies in the national education systems of the leading countries of Europe and the Republic of Kazakstan in particular. This study allowed us to conclude that the introduction of digitalization into the domestic education system creates new difficulties, such as misunderstanding of the processes taking place, insufficient funding and others.
Держатели документа:
М. Өтемісов атындағы БҚУ
Доп.точки доступа:
Amantayev, Y.
Baishan, G.

22.1
A36
Alimbekova, N. B.
    Numerical implementation of a nonlinear model of fluid flow in a highly fractured medium by the finite element method [Текст] / N. B. Alimbekova // Вестник национальной инженерной академии Республики Казахстан. - 2021. - №3. - с. 8-16
ББК 22.1

Рубрики: Математика

Кл.слова (ненормированные):
fluid flow in porous media -- finite element method -- fractional derivative in the sense of Caputo-Fabrizio -- Newtons method -- convergence -- computational experiments
Аннотация: The paper presents the research results of the iterative method for solving the nonlinear problem of fluid flow in hihhly porous fractured formations, carried out within the framework of the grant project of the Ministry of Education and Science of the Republic of Kazakhstan No.
Держатели документа:
ЗКУ им М. Утемисова

65
Ш 38
Shedenov, U. K.
    Reform of Pharmaceutical products traffic in the republic of Kazakhstan following the pandemic results [Текст] / U. K. Shedenov // Транзитная экономика. - 2022. - №2. - P. 70-74.
ББК 65

Рубрики: Economics.

Кл.слова (ненормированные):
reform -- Pharmaceutical products -- traffic -- Kazakhstan -- pandemic -- results -- pharmaceu
Аннотация: Reform of Pharmaceutical products traffic in the republic of Kazakhstan following the pandemic results.
Держатели документа:
WKSU