Электронный каталог
Жанр:Естественные науки (natural_sciences)
Каталог:Статьи
Результат поиска:
4141-4150 из 4388
периодические издания(Журналы)
SEISENBAYEVA G. S.
Seisenbayeva, G. S. Enhanced charge separation at the interface of Cu2O/CuSCN composite thin films synthesized by electrodeposition technique [Text] / G. S. Seisenbayeva, D. S. Kambar , A. V. Zavgorodniy [et al.] // Қарағанды университетінің хабаршысы. Физика сериясы. - 2024. - № 3 (115). - P. 34-40. - Bibliogr.: p. 39 ISSN 2518-7198.
УДК:
535
Предметная рубрика
- Optics
Аннотация
This study focuses on the synthesis and characterization of hole transport layers (HTLs) for solar cells, particularly copper(I) thiocyanate (CuSCN) and cuprous oxide (Cu2O), synthesized via electrodeposition techniques
Ключевые слова
solar cells, hole transport layers, electrodeposition, copper(I) thiocyanate, cuprous oxide, optimal synthesis conditions, photoelectric response, chare transport, электр тұндыру, электроосаждение
Казахстаника
0/0 Свободно
периодические издания(Журналы)
SALIM S. H.
Salim, S. H. Solving Volterra-Fredholm integral equations by non-polynomial spline functions [Text] / S. H. Salim, K. H. F. Jwamer , R. K. Saeed // Қарағанды университетінің хабаршысы. Математика сериясы. - 2024. - № 4 (116). - P. 170-184. - Bibliogr.: p. 183-184 ISSN 2518-7929.
УДК:
517.9
Предметная рубрика
- Differential equations. Integral equations
Аннотация
In this paper a novel non-polynomial spline function to obtain the numerical solution of equation (1) for the first time
Ключевые слова
Volterra integral equation, Fredholm integral equation, non-polynomial spline function, integral equations, linear equations
Казахстаника
0/0 Свободно
периодические издания(Журналы)
YESHKEYEV A. R.
Yeshkeyev, A. R. Double factorization of the Jonsson spectrum [Text] / A. R. Yeshkeyev, O. I. Ulbrikht , M. T. Omarova // Қарағанды университетінің хабаршысы. Математика сериясы. - 2024. - № 4 (116). - P. 185-196. - Bibliogr.: p. 194-195 ISSN 2518-7929.
УДК:
512
Предметная рубрика
- Algebra
Аннотация
The main result of this paper is considering normal Jonsson theories class by similarity to some fixed class of polygons (S-acts)
Ключевые слова
perfect Jonsson theory, normal Jonsson theory, Jonsson set, almost Jonsson set, Jonsson fragment, syntactic similarity, semantic similarity, Jonsson specrtum, cosemanticness, S-act
Казахстаника
0/0 Свободно
периодические издания(Журналы)
KOSHTYBAYEV T.
Koshtybayev, T. Correlation functions of weakly inhomogeneous plasma [Text] / T. Koshtybayev, M. Aliyeva // Қарағанды университетінің хабаршысы. Физика сериясы. - 2024. - № 3 (115). - P. 6-14. - Bibliogr.: p. 11-12 ISSN 2518-7198.
УДК:
533.9.01
Предметная рубрика
- Plasma theory and physics
Аннотация
This article focuses on the kinetic theory of inhomogeneous plasma and explores the interaction between a high-frequency electric field and weakly inhomogeneous plasma
Ключевые слова
high-frequency properties, inhomogeneous plasma, kinetic equation, variable field, collision integral, біртексіз плазма, кинетикалық теңдеу, неоднородная плазма, кинетическое уравнение
Казахстаника
0/0 Свободно
периодические издания(Журналы)
KASSYMETOVA M. T.
Kassymetova, M. T. Model-theoretic properties of J-non-multidimensional theories [Text] / M. T. Kassymetova, G. E. Zhumabekova // Қарағанды университетінің хабаршысы. Математика сериясы. - 2024. - № 4 (116). - P. 119-126. - Bibliogr.: p. 124-126 ISSN 2518-7929.
УДК:
517
Предметная рубрика
- Mathematical analysis
Аннотация
The issues of utilizing the central type to analyze the theoretical and model properties of the idea of heredity were examined in this research, taking into account both theories and the Jonsson spectrum
Ключевые слова
Jonsson theory, semantic model, perfect Jonsson theory, permissible enrichment, existentially closed model, J-stable theory, semantic pairs, existentially finite cover property, J-non-multidimensional theory
Казахстаника
0/0 Свободно
периодические издания(Журналы)
MIRZAKULOVA A. E.
Mirzakulova, A. E. Uniform asymptotic expansion of the solution for the initial valueproblem with a piecewise constant argument [Text] / A. E. Mirzakulova, K. T. Konisbayeva // Қарағанды университетінің хабаршысы. Математика сериясы. - 2024. - № 4 (116). - P. 138-148. - Bibliogr.: p. 146-147 ISSN 2518-7929.
УДК:
517.9
Предметная рубрика
- Differential equations
Аннотация
The article is devoted to the study of a singularly perturbed initial problem for a linear differential equation with a piecewise constant argument second-order for a small parameter
Ключевые слова
singular perturbation, asymptotics, small parameter, boundary layer part, piecewise constant argument
Казахстаника
0/0 Свободно
периодические издания(Журналы)
MOLDAGALI YE. O.
Moldagali, Ye. O. Conditions for maximal regularity of solutions to fourth-order differential equations [Text] / Ye. O. Moldagali, K. N. Ospanov // Қарағанды университетінің хабаршысы. Математика сериясы. - 2024. - № 4 (116). - P. 149-158. - Bibliogr.: p. 157-158 ISSN 2518-7929.
УДК:
517.9
Предметная рубрика
- Differential equations
Аннотация
This article investigates a fourth-order differential equation defined in a Hilbert space, with an unboundedintermediate coefficient and potential
Ключевые слова
fourth-order differential equation, unbounded coefficient, coercive estimate, differential operators, differential equations
Казахстаника
0/0 Свободно
периодические издания(Журналы)
MUKAMETKALI T. M.
Mukametkali, T. M. Phthalocyanine and metal phthalocyanine are hole transport buffer layers for perovskite solar cell fabrication [Text] / T. M. Mukametkali, A. K. Aimukhanov , A. K. Zeinidenov // Қарағанды университетінің хабаршысы. Физика сериясы. - 2024. - № 3 (115). - P. 41-50. - Bibliogr.: p. 48-49 ISSN 2518-7198.
УДК:
538.9:621.383
Предметная рубрика
- Condensed matter physics. Photoelectronics
Аннотация
In this study, adding an extra layer of phthalocyanine and its metal complexes between the perovskite and the hole-conducting MoOxlayer is proposed in order to enhance the efficiency and stability of perovskite solar cells (PSCs)
Ключевые слова
Perovskite solar cells, hole transport layers, metalphthalocyanine, absorption spectra, photovoltaic properties, electrical impedance spectroscopy, ion migration, перовскитті күн батареялары, перовскитные солнечные элементы
Казахстаника
0/0 Свободно
периодические издания(Журналы)
ALPYSSOVA G. K.
Alpyssova, G. K. Optical properties of ZnWO4 ceramics obtained by radiation synthesis [Text] / G. K. Alpyssova, D. A. Afanasyev , Zh. K. Bakiyeva [et al.] // Қарағанды университетінің хабаршысы. Физика сериясы. - 2024. - № 3 (115). - P. 51-60. - Bibliogr.: p. 57-59 ISSN 2518-7198.
УДК:
535.37
Предметная рубрика
- Luminescence
Аннотация
The morphology of the surface, X-ray diffraction spectra and optical properties of ZnWO4 ceramics obtained by radiation synthesis were studied
Ключевые слова
radiation synthesis, zinc tungstate, X-ray diffraction spectra, EDX analysis, power density, optical properties of ceramics, люминесценция, радиациялық cинтез, радиационный синтез
Казахстаника
0/0 Свободно
периодические издания(Журналы)
BEALL G. W.
Beall, G. W. First-principles study of O3 molecule adsorption on pristine, N, Ga-doped and -Ga-N- co-doped graphene [Text] / G. W. Beall, D. S. Akhmetsadyk , A. M. Ilyin [et al.] // Қарағанды университетінің хабаршысы. Физика сериясы. - 2024. - № 3 (115). - P. 15-24. - Bibliogr.: p. 21-23 ISSN 2518-7198.
УДК:
538.915
Предметная рубрика
- Electronic states and electronic structures
Аннотация
The adsorption of O3 molecules (ozone) on graphene, N-doped graphene, Ga-doped graphene, and -Ga-N- co-doped graphene with an emphasis on O3 detection was examined in this work
Ключевые слова
graphene, O3 adsorption, density functional theory, N-doped graphene, Ga-doped graphene, -Ga-N- co-doped graphene, gas sensor, graphene-based sensors, графен
Казахстаника
0/0 Свободно
SEISENBAYEVA G. S.
ENHANCED CHARGE SEPARATION AT THE INTERFACE OF CU2O/CUSCN COMPOSITE THIN FILMS SYNTHESIZED BY ELECTRODEPOSITION TECHNIQUE
периодические издания(Журналы)
0/0 Свободно
SALIM S. H.
SOLVING VOLTERRA-FREDHOLM INTEGRAL EQUATIONS BY NON-POLYNOMIAL SPLINE FUNCTIONS
периодические издания(Журналы)
0/0 Свободно
периодические издания(Журналы)
0/0 Свободно
периодические издания(Журналы)
0/0 Свободно
KASSYMETOVA M. T.
MODEL-THEORETIC PROPERTIES OF J-NON-MULTIDIMENSIONAL THEORIES
периодические издания(Журналы)
0/0 Свободно
MIRZAKULOVA A. E.
UNIFORM ASYMPTOTIC EXPANSION OF THE SOLUTION FOR THE INITIAL VALUEPROBLEM WITH A PIECEWISE CONSTANT ARGUMENT
периодические издания(Журналы)
0/0 Свободно
MOLDAGALI YE. O.
CONDITIONS FOR MAXIMAL REGULARITY OF SOLUTIONS TO FOURTH-ORDER DIFFERENTIAL EQUATIONS
периодические издания(Журналы)
0/0 Свободно
MUKAMETKALI T. M.
PHTHALOCYANINE AND METAL PHTHALOCYANINE ARE HOLE TRANSPORT BUFFER LAYERS FOR PEROVSKITE SOLAR CELL FABRICATION
периодические издания(Журналы)
0/0 Свободно
ALPYSSOVA G. K.
OPTICAL PROPERTIES OF ZNWO4 CERAMICS OBTAINED BY RADIATION SYNTHESIS
периодические издания(Журналы)
0/0 Свободно
BEALL G. W.
FIRST-PRINCIPLES STUDY OF O3 MOLECULE ADSORPTION ON PRISTINE, N, GA-DOPED AND -GA-N- CO-DOPED GRAPHENE
периодические издания(Журналы)
0/0 Свободно