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Жанр:Естественные науки (natural_sciences)
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181-190 из 231
периодические издания(Журналы)
TASKIN A.
Taskin, A. Source identification problems for the neutron transport equations [Text] / A. Taskin // Қарағанды университетінің хабаршысы. Математика сериясы. - 2024. - № 3 (115). - P. 137-149. - Bibliogr.: p. 147-149 ISSN 2518-7929.
УДК:
517.9
Предметная рубрика
- Differential equations
Аннотация
In this study, the time-dependent source identification problem for the two-dimensional neutron transport equation was studied
Ключевые слова
identification problem, neutron transport equation, difference scheme, differential equation, stability inequality
Казахстаника
0/0 Свободно
периодические издания(Журналы)
VALIYEV A. A.
Valiyev, A. A. Spectrum and resolvent of multi-channel systems with internal energies and common boundary conditions [Text] / A. A. Valiyev, M. B. Valiyev , E. H. Huseynov // Қарағанды университетінің хабаршысы. Математика сериясы. - 2025. - № 3 (115). - P. 150-157. - Bibliogr.: p. 157 ISSN 2518-7929.
УДК:
517.9
Предметная рубрика
- Differential equations
Аннотация
In the article the spectrum and resolvent of the so-called multichannel systems with nonzero internal energies were investigated
Ключевые слова
eigenvalues, edge problem, Wronskian, transformation operator, asymptotics, continuous spectrum, resolvent, multi-channel systems, internal energy, quantum physics
Казахстаника
0/0 Свободно
периодические издания(Журналы)
ABIEV N. A.
Abiev, N. A. Structural properties of the sets of positively curved Riemannian metrics on generalized Wallach spaces [Text] / N. A. Abiev // Қарағанды университетінің хабаршысы. Математика сериясы. - 2024. - № 4 (116). - P. 4-17. - Bibliogr.: p. 16-17 ISSN 2518-7929.
УДК:
512
Предметная рубрика
- Algebra
Аннотация
In the present paper sets related to invariant Riemannian metrics of positive sectional and (or) Ricci curvature on generalized Wallach spaces are considered
Ключевые слова
generalized Wallach space, Riemannian metric, Kähler metric, normalized Ricci flow, sectional curvature, Ricci curvature, dynamical system, singular point
Казахстаника
0/0 Свободно
периодические издания(Журналы)
BOBODZHANOVA M. A.
Bobodzhanova, M. A. Singularly perturbed integro-differential equations with degenerate Hammerstein’s kernel [Text] / M. A. Bobodzhanova, B. T. Kalimbetov , V. F. Safonov // Қарағанды университетінің хабаршысы. Математика сериясы. - 2024. - № 4 (116). - P. 57-68. - Bibliogr.: p. 66-68 ISSN 2518-7929.
УДК:
517.9
Предметная рубрика
- Differential equations. Integral equations
Аннотация
Singularly perturbed integro-differential equations with degenerate kernels are considered
Ключевые слова
singularly perturbed, Hammerstein’s equation, degenerate kernel, Fredholm’s equations, analytic function, Laurent’s series, passage to the limit, the Maple program
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)
AMIROV B. M.
Amirov, B. M. Screening of onion breeding selections for storing ability
[Text] / B. M. Amirov, Zh. S. Amirova , U. A. Manabayeva [and others] // ПМУ хабаршысы. Химия-биологиялық серия. - 2014. - № 1. - Р. 66-71. - Bibliogr.: 70 р. ISSN 1811-184Х.
УДК:
635.25
Предметная рубрика
- Onion. Allium cepa L.
Аннотация
The article presents an experimental study of onions for their storage capacity
Ключевые слова
onion, onion storage, experimental study of onions, onion breeding
Казахстаника
0/0 Свободно
периодические издания(Журналы)
AMIROV B. M.
Amirov, B. M. Screening of onion breeding selections for storing ability
[Text] / B. M. Amirov, Zh. S. Amirova , U. A. Manabaeva [and others] // ПМУ хабаршысы. Химия-биологиялық серия. - 2014. - № 4. - Р. 44-49. ISSN 1811-184Х.
УДК:
635.25
Предметная рубрика
- Onion. Allium cepa L.
Аннотация
The article examines the result of the selection of a breeding onion for its storage capacity
Ключевые слова
onion breeding, onion, onion storage, breeding onions, storability
Казахстаника
0/0 Свободно
периодические издания(Журналы)
VDOVINA T. A.
Vdovina, T. A. State of coenopopulations of wild berry plants in the territory of Kazakhstan Altai [Text] / T. A. Vdovina, O. A. Lagus , E. A. Isakova [et al.] // Қарағанды университетінің хабаршысы. Биология. Медицина. География сериясы. - 2024. - № 4 (116). - P. 129-134. - Bibliogr.: p. 133 ISSN 2518-7201.
УДК:
581.1:574.3
Предметная рубрика
- Plant physiology. Population
Аннотация
This article presents studies on the state of the coenopopulations: Rosa acicularis Lindl., Rosa spinosissima L., Lonicera altaica Pall., Ribes nigrum L., Ribes petraeum Wulfen, which have high resource indicators and significant areas
Ключевые слова
coenopopulation, phytonosis, жабайы жеміс өсімдіктері, wild berry plants, ценопопуляция, дикие плодовые растения
Казахстаника
0/0 Свободно
периодические издания(Журналы)
TULEGENOVA A. T.
Tulegenova, A. T. Spectral characteristics of photoluminescence synthesized in the field of radiation YAGG phosphors with different Al/Ga ratio [Text] / A. T. Tulegenova, G. Zh. Nogaibekova , I. A. Saidazimov [et al.] // Қарағанды университетінің хабаршысы. Физика сериясы. - 2024. - № 4 (116). - P. 114-122. - Bibliogr.: p. 120-121 ISSN 2518-7198.
УДК:
535.37
Предметная рубрика
- Luminescence
Аннотация
In the study the results of luminescence spectra investigating and excitation of ceramics luminescence with different Al/Ga ratios, synthesized by irradiating a mixture of initial materials with different prehistories were presented.
Ключевые слова
Al/Ga ratio, luminescence, radiation synthesis, high-energy electron beam, люминесценция
Казахстаника
0/0 Свободно
периодические издания(Журналы)
ABDRASSILOVA A.
Abdrassilova, A. Study of catalysts based on mesoporous aluminosilicate in the dearomatization process of a model mixture: physico-chemical characteristics and catalytic activity
[Text] / A. Abdrassilova, G. Vassilina , K. Abdildina [et al.] // Шәкәрім университетінің хабаршысы. Техника ғылымдар. - 2024. - № 1 (13). - Р. 353-361. - Bibliogr.: р. 358-359 ISSN 2788-7995.
УДК:
54
Предметная рубрика
- Chemistry
Аннотация
The article presents the synthesis of mesoporous aluminosilicates and bifunctional catalysts based on them to study the activity of the hydrotreatment process for a model mixture
Ключевые слова
mesoporous aluminosilicates, bifunctional catalysts, hydrodearomatization, model mixture
Казахстаника
0/0 Свободно
TASKIN A.
SOURCE IDENTIFICATION PROBLEMS FOR THE NEUTRON TRANSPORT EQUATIONS
периодические издания(Журналы)
0/0 Свободно
VALIYEV A. A.
SPECTRUM AND RESOLVENT OF MULTI-CHANNEL SYSTEMS WITH INTERNAL ENERGIES AND COMMON BOUNDARY CONDITIONS
периодические издания(Журналы)
0/0 Свободно
ABIEV N. A.
STRUCTURAL PROPERTIES OF THE SETS OF POSITIVELY CURVED RIEMANNIAN METRICS ON GENERALIZED WALLACH SPACES
периодические издания(Журналы)
0/0 Свободно
BOBODZHANOVA M. A.
SINGULARLY PERTURBED INTEGRO-DIFFERENTIAL EQUATIONS WITH DEGENERATE HAMMERSTEIN’S KERNEL
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
VDOVINA T. A.
STATE OF COENOPOPULATIONS OF WILD BERRY PLANTS IN THE TERRITORY OF KAZAKHSTAN ALTAI
периодические издания(Журналы)
0/0 Свободно
TULEGENOVA A. T.
SPECTRAL CHARACTERISTICS OF PHOTOLUMINESCENCE SYNTHESIZED IN THE FIELD OF RADIATION YAGG PHOSPHORS WITH DIFFERENT AL/GA RATIO
периодические издания(Журналы)
0/0 Свободно
ABDRASSILOVA A.
STUDY OF CATALYSTS BASED ON MESOPOROUS ALUMINOSILICATE IN THE DEAROMATIZATION PROCESS OF A MODEL MIXTURE: PHYSICO-CHEMICAL CHARACTERISTICS AND CATALYTIC ACTIVITY
периодические издания(Журналы)
0/0 Свободно