Электронный каталог
Жанр:Прикладные науки. Общие вопросы. Техника (technics_IT)
Язык издания:Английский
Вид издания:периодические издания(Журналы)
Результат поиска:
61-70 из 153
периодические издания(Журналы)
SHEROV K. T.
Sherov, K. T. Increasing durability of thermo-friction tools by surfacing [Text] / K. T. Sherov, S. O. Tussupova , A. V. Mazdubay [et al.] // Қазақстан Республикасы Ұлттық ғылым академиясының хабарлары. Геология және техникалық ғылымдар сериясы. - 2022. - № 3 (453). - P. 265-275. - Bibliogr.: p. 274-275 ISSN 2224-5278.
УДК:
621
Предметная рубрика
- Mechanical engineering
Аннотация
The article presents the results of a study on increasing the wear resistance of the cutting part of thermofriction tools by surfacing
Ключевые слова
wear resistance, hardness, surfacing material, thermofriction tool, wear, melting point, surfacing
Казахстаника
0/0 Свободно
периодические издания(Журналы)
ISKANDAROV E. KH.
Iskandarov, E. Kh. Analytical and wave-depression methods of elimination of the onset of hydration in subsea gas pipelines [Text] / E. Kh. Iskandarov, Sh. A. Baghirov // Қазақстан Республикасы Ұлттық ғылым академиясының хабарлары. Геология және техникалық ғылымдар сериясы. - 2022. - № 4 (454). - P. 96-108. - Bibliogr.: p. 107-108 ISSN 2224-5278.
УДК:
622.691.4
Предметная рубрика
- Pipeline transportation of natural gases. Gas pipelines
Аннотация
The artocle is devoted to the operative determination of hydration in the process of transportation of natural by subsea gas pipeline and the analysis of methods for the elimination of hydrate already formed
Ключевые слова
natural gases, gas hydrate, wave-depression method, subsea pipeline, indication of hydrate formation, blockage, methanol
Казахстаника
0/0 Свободно
периодические издания(Журналы)
KANBETOV A. SH.
Kanbetov, A. Sh. Study of heavy metals and arsenic content in soils of the coastal zone of the Caspian sea of the Kazakhstan sector [Text] / A. Sh. Kanbetov, M. Z. Muldakhmetov , D. K. Kulbatyrov [et al.] // Қазақстан Республикасы Ұлттық ғылым академиясының хабарлары. Геология және техникалық ғылымдар сериясы. - 2022. - № 4 (454). - P. 109-121. - Bibliogr.: p. 120-121 ISSN 2224-5278
.
УДК:
614.771
Предметная рубрика
- Soil pollution
Аннотация
The purpose of the studies is to identify areas and zones of priority protection of environmentally sensitive zones along the coast of the Kazakhstan sector of the Caspian Sea from the border with the Russian Federation (RF) to the Tupkaragan Bay to determine priorities for oil spill response
Ключевые слова
heavy metals, arsenic, Caspian coast, soil cover, soil pollution
Казахстаника
0/0 Свободно
периодические издания(Журналы)
HEZENCI F.
Hezenci, F. A remark on Schottky representations and Reidemeister torsion [Text] / F. Hezenci, Y. Sozen // Қарағанды университетінің хабаршысы. Математика сериясы. - 2023. - № 1 (109). - P. 81-93. - Bibliogr.: p. 91-92 ISSN 2518-7929.
УДК:
515.1
Предметная рубрика
- Topology
Аннотация
The present paper establishes a formula of Reidemeister torsion for Schottky representations
Ключевые слова
Schottky representation, Reidemeister torsion, representation varieties, Atiyah-Bott-Goldman symplectic form, Thurston symplectic form
Казахстаника
0/0 Свободно
периодические издания(Журналы)
BURANAY S. C.
Buranay, S. C. Solution of heat equation by a novel implicit scheme using block hybrid preconditioning of the conjugate gradient method [Text] / S. C. Buranay, N. Arshad // Қарағанды университетінің хабаршысы. Математика сериясы. - 2023. - № 1 (109). - P. 58-80. - Bibliogr.: p. 77-79 ISSN 2518-7929.
УДК:
517.9
Предметная рубрика
- Differential equations. Integral equations
Аннотация
The main goal of the study is the approximation of the solution to the Dirichlet boundary value problem (DBVP) of the heat equation on a rectangle by developing a new difference method on a grid system of hexagons
Ключевые слова
heat equation, implicit scheme, hexagonal grid, stability analysis, symmetric positive definite matrix, approximate inverse, incomplete block factorization, block hybrid preconditioning, conjugate gradient method
Казахстаника
0/0 Свободно
периодические издания(Журналы)
ARIPOV M. M.
Aripov, M. M. On convergence of difference schemes of high accuracy for one pseudo-parabolic Sobolev type equation [Text] / M. M. Aripov, D. Utebaev , M. M. Kazimbetova // Қарағанды университетінің хабаршысы. Математика сериясы. - 2023. - № 1 (109). - P. 24-37. - Bibliogr.: p. 34-35 ISSN 2518-7929.
УДК:
517.95:519.6
Предметная рубрика
- Differential equations. Computational mathematics
Аннотация
Difference schemes of the finite difference method and the finite element method of high-order accuracy in time and space are proposed and investigated for a pseudo-parabolic Sobolev type equation
Ключевые слова
pseudo-parabolic equation, difference schemes, finite difference method, finite element method, generalized solutions, a priori estimates, stability, convergence, accuracy
Казахстаника
0/0 Свободно
периодические издания(Журналы)
ASHYRALYEV А.
Ashyralyev, А. On the hyperbolic type differential equation with time involution [Text] / А. Ashyralyev, А. Ashyralyyev , B. Abdalmohammed // Қарағанды университетінің хабаршысы. Математика сериясы. - 2023. - № 1 (109). - P. 38-47. - Bibliogr.: p. 44-45 ISSN 2518-7929.
УДК:
517.28
Предметная рубрика
- Involutory type hyperbolic equation
Аннотация
In the present paper, the initial value problem for the hyperbolic type involutory in t second order linear partial differential equation is studied
Ключевые слова
stability, Banach space, partial differential equation, hyperbolic differential equations, differential operator
Казахстаника
0/0 Свободно
периодические издания(Журналы)
SALIM S. H.
Salim, S. H. Solving Volterra-Fredholm integral equations by natural cubic spline function [Text] / S. H. Salim, K. H.F. Jwamer , R. K. Saeed // Қарағанды университетінің хабаршысы. Математика сериясы. - 2023. - № 1 (109). - P. 124-130. - Bibliogr.: p. 128-129 ISSN 2518-7929.
УДК:
517.9
Предметная рубрика
- Differential equations. Integral equations
Аннотация
Using the natural cubic spline function, this paper finds the numerical solution of Volterra-Fredholm integral equations of the second kind
Ключевые слова
Volterra integral equation, Fredholm integral equation, spline function
Казахстаника
0/0 Свободно
периодические издания(Журналы)
SINSOYSAL B.
Sinsoysal, B. Numerical method to solution of generalized model Buckley-Leverett in a class of discontinuous functions [Text] / B. Sinsoysal, M. Rasulov , R. Iskenderova // Қарағанды университетінің хабаршысы. Математика сериясы. - 2023. - № 1 (109). - P. 131-140. - Bibliogr.: p. 137-138 ISSN 2518-7929.
УДК:
517.9
Предметная рубрика
- Differential equations. Integral equations
Аннотация
A new numerical method is proposed for solving the generalized Buckley-Leverett problem, which describes the movement of two-phase mixtures of Bazhenov bed sediments in a class of discontinuous functions
Ключевые слова
generalized Buckley-Leverett problem, auxiliary problem, finite differences method, nonlinear differential equations
Казахстаника
0/0 Свободно
периодические издания(Журналы)
YUCEL M.
Yucel, M. Generalized differential transformation method for solving two-interval Weber equation subject to transmission conditions [Text] / M. Yucel, F. S. Muhtarov , O. Sh. Mukhtarov // Қарағанды университетінің хабаршысы. Математика сериясы. - 2023. - № 1 (109). - P. 168-176. - Bibliogr.: p. 168-176 ISSN 2518-7929.
УДК:
519.62
Предметная рубрика
- Numerical methods for solving differential equations
Аннотация
The main goal of this study is to adapt the classical differential transformation method to solve new types of boundary value problems
Ключевые слова
two-interval problems, the differential transformation method, Weber equation, transmission conditions
Казахстаника
0/0 Свободно
SHEROV K. T.
INCREASING DURABILITY OF THERMO-FRICTION TOOLS BY SURFACING
периодические издания(Журналы)
0/0 Свободно
ISKANDAROV E. KH.
ANALYTICAL AND WAVE-DEPRESSION METHODS OF ELIMINATION OF THE ONSET OF HYDRATION IN SUBSEA GAS PIPELINES
периодические издания(Журналы)
0/0 Свободно
KANBETOV A. SH.
STUDY OF HEAVY METALS AND ARSENIC CONTENT IN SOILS OF THE COASTAL ZONE OF THE CASPIAN SEA OF THE KAZAKHSTAN SECTOR
периодические издания(Журналы)
0/0 Свободно
HEZENCI F.
A REMARK ON SCHOTTKY REPRESENTATIONS AND REIDEMEISTER TORSION
периодические издания(Журналы)
0/0 Свободно
BURANAY S. C.
SOLUTION OF HEAT EQUATION BY A NOVEL IMPLICIT SCHEME USING BLOCK HYBRID PRECONDITIONING OF THE CONJUGATE GRADIENT METHOD
периодические издания(Журналы)
0/0 Свободно
ARIPOV M. M.
ON CONVERGENCE OF DIFFERENCE SCHEMES OF HIGH ACCURACY FOR ONE PSEUDO-PARABOLIC SOBOLEV TYPE EQUATION
периодические издания(Журналы)
0/0 Свободно
ASHYRALYEV А.
ON THE HYPERBOLIC TYPE DIFFERENTIAL EQUATION WITH TIME INVOLUTION
периодические издания(Журналы)
0/0 Свободно
SALIM S. H.
SOLVING VOLTERRA-FREDHOLM INTEGRAL EQUATIONS BY NATURAL CUBIC SPLINE FUNCTION
периодические издания(Журналы)
0/0 Свободно
SINSOYSAL B.
NUMERICAL METHOD TO SOLUTION OF GENERALIZED MODEL BUCKLEY-LEVERETT IN A CLASS OF DISCONTINUOUS FUNCTIONS
периодические издания(Журналы)
0/0 Свободно
YUCEL M.
GENERALIZED DIFFERENTIAL TRANSFORMATION METHOD FOR SOLVING TWO-INTERVAL WEBER EQUATION SUBJECT TO TRANSMISSION CONDITIONS
периодические издания(Журналы)
0/0 Свободно