Electronic catalog
Genre:Прикладные науки. Общие вопросы. Техника (technics_IT)
language:English
catalogue:Articles
Search result:
61-70 of 167
periodical press (Magazines)
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.
UDC:
621
Subject headings
- Mechanical engineering
Annotation
The article presents the results of a study on increasing the wear resistance of the cutting part of thermofriction tools by surfacing
Keywords
wear resistance, hardness, surfacing material, thermofriction tool, wear, melting point, surfacing
Kazakhstan
0/0 Free
periodical press (Magazines)
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.
UDC:
622.691.4
Subject headings
- Pipeline transportation of natural gases. Gas pipelines
Annotation
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
Keywords
natural gases, gas hydrate, wave-depression method, subsea pipeline, indication of hydrate formation, blockage, methanol
Kazakhstan
0/0 Free
periodical press (Magazines)
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
.
UDC:
614.771
Subject headings
- Soil pollution
Annotation
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
Keywords
heavy metals, arsenic, Caspian coast, soil cover, soil pollution
Kazakhstan
0/0 Free
periodical press (Magazines)
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.
UDC:
515.1
Subject headings
- Topology
Annotation
The present paper establishes a formula of Reidemeister torsion for Schottky representations
Keywords
Schottky representation, Reidemeister torsion, representation varieties, Atiyah-Bott-Goldman symplectic form, Thurston symplectic form
Kazakhstan
0/0 Free
periodical press (Magazines)
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.
UDC:
517.9
Subject headings
- Differential equations. Integral equations
Annotation
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
Keywords
heat equation, implicit scheme, hexagonal grid, stability analysis, symmetric positive definite matrix, approximate inverse, incomplete block factorization, block hybrid preconditioning, conjugate gradient method
Kazakhstan
0/0 Free
periodical press (Magazines)
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.
UDC:
517.95:519.6
Subject headings
- Differential equations. Computational mathematics
Annotation
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
Keywords
pseudo-parabolic equation, difference schemes, finite difference method, finite element method, generalized solutions, a priori estimates, stability, convergence, accuracy
Kazakhstan
0/0 Free
periodical press (Magazines)
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.
UDC:
517.28
Subject headings
- Involutory type hyperbolic equation
Annotation
In the present paper, the initial value problem for the hyperbolic type involutory in t second order linear partial differential equation is studied
Keywords
stability, Banach space, partial differential equation, hyperbolic differential equations, differential operator
Kazakhstan
0/0 Free
periodical press (Magazines)
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.
UDC:
517.9
Subject headings
- Differential equations. Integral equations
Annotation
Using the natural cubic spline function, this paper finds the numerical solution of Volterra-Fredholm integral equations of the second kind
Keywords
Volterra integral equation, Fredholm integral equation, spline function
Kazakhstan
0/0 Free
periodical press (Magazines)
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.
UDC:
517.9
Subject headings
- Differential equations. Integral equations
Annotation
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
Keywords
generalized Buckley-Leverett problem, auxiliary problem, finite differences method, nonlinear differential equations
Kazakhstan
0/0 Free
periodical press (Magazines)
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.
UDC:
519.62
Subject headings
- Numerical methods for solving differential equations
Annotation
The main goal of this study is to adapt the classical differential transformation method to solve new types of boundary value problems
Keywords
two-interval problems, the differential transformation method, Weber equation, transmission conditions
Kazakhstan
0/0 Free
periodical press (Magazines)
0/0 Free
ISKANDAROV E. KH.
ANALYTICAL AND WAVE-DEPRESSION METHODS OF ELIMINATION OF THE ONSET OF HYDRATION IN SUBSEA GAS PIPELINES
periodical press (Magazines)
0/0 Free
KANBETOV A. SH.
STUDY OF HEAVY METALS AND ARSENIC CONTENT IN SOILS OF THE COASTAL ZONE OF THE CASPIAN SEA OF THE KAZAKHSTAN SECTOR
periodical press (Magazines)
0/0 Free
periodical press (Magazines)
0/0 Free
BURANAY S. C.
SOLUTION OF HEAT EQUATION BY A NOVEL IMPLICIT SCHEME USING BLOCK HYBRID PRECONDITIONING OF THE CONJUGATE GRADIENT METHOD
periodical press (Magazines)
0/0 Free
ARIPOV M. M.
ON CONVERGENCE OF DIFFERENCE SCHEMES OF HIGH ACCURACY FOR ONE PSEUDO-PARABOLIC SOBOLEV TYPE EQUATION
periodical press (Magazines)
0/0 Free
ASHYRALYEV А.
ON THE HYPERBOLIC TYPE DIFFERENTIAL EQUATION WITH TIME INVOLUTION
periodical press (Magazines)
0/0 Free
SALIM S. H.
SOLVING VOLTERRA-FREDHOLM INTEGRAL EQUATIONS BY NATURAL CUBIC SPLINE FUNCTION
periodical press (Magazines)
0/0 Free
SINSOYSAL B.
NUMERICAL METHOD TO SOLUTION OF GENERALIZED MODEL BUCKLEY-LEVERETT IN A CLASS OF DISCONTINUOUS FUNCTIONS
periodical press (Magazines)
0/0 Free
YUCEL M.
GENERALIZED DIFFERENTIAL TRANSFORMATION METHOD FOR SOLVING TWO-INTERVAL WEBER EQUATION SUBJECT TO TRANSMISSION CONDITIONS
periodical press (Magazines)
0/0 Free