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1.
Подробнее
Aldibekov, T. М
Nonlinear differential equation with first order partial derivatives [Текст] / T.М Aldibekov, M. M. Aldazharova // Әл-Фараби атындағы Қазақ ұлттық университет = Вестник Казахского национального университета им.Аль-Фараби. - Аlmaty, 2018. - №3. - Р. 3-11. - (Математика, механика, информатика сериясы = Серия математика, механика, информатика)
ББК 22.2
Рубрики: Механика
Кл.слова (ненормированные):
теңдеу -- бірінші ретті дербес туындылар -- дифференциалдық теңдеу -- Алдибеков Т.М -- Алдажарова М.М -- Хабаршы-Вестник
Аннотация: Туындылардың бiреуiне байланысты шешiлген бiрiншi реттi дербес туындылы сызықты емес дифференциалдық теңдеудiң шешiмдерiнiң асимптотикалық мiнезi зерттеледi. Бiрiншi реттi дербес туындылы дифференциалдық теңдеудiң әрқайсысының қандайда бiр шарттарда фундаменталды интегрладар жүйесi немесе интегралдық базисi болады. Айта кететiнi, жалпы бiрiншi реттi сызықты дербес туындылы дифференциалдық теңдеудiң тривиалды емес интегралы болмауы да мұмкiн. Бiрiншi реттi сызықты дербес туындылы дифференциалдық теңдеу үшiн, оның коэффициенттерi шенелмеген жиында берiлiп, үзiлiссiз бiрiншi реттi дербес туындылары болса және бiрiншi коэффициентi бiрге тең болса, интегралды базис бар болады. Бұл жүмыста туындылардың бiреуiне байланысты шешiлген бiрiншi реттi дербес туындылы сызықты емес дифференциалдық теңдеу екi жағынан бiрiншi реттi дербес туындылы дифференциалдық теңдеулермен бағаланады. Дифференциалдық теңсiздiктердi пайдалана отырып, туындылардың бiреуiне байланысты шешiлген бiрiншi реттi дербес туындылы сызықты емес теңдеудiң тәуелсiз айнымалыларнының бiреуi плюс шексiздiкке ұмтылған жағдайда нөлге ұмтылатын шешiмi бар болатыны дәлелденген. Қазiргi таңда дербес туындылы дифференциалдық теңдеулер теориясы жаратылыс танудың түрлі салаларында өз қолданыстарын табуда.
Держатели документа:
ЗКГУ
Доп.точки доступа:
Aldazharova, M.M.
Aldibekov, T. М
Nonlinear differential equation with first order partial derivatives [Текст] / T.М Aldibekov, M. M. Aldazharova // Әл-Фараби атындағы Қазақ ұлттық университет = Вестник Казахского национального университета им.Аль-Фараби. - Аlmaty, 2018. - №3. - Р. 3-11. - (Математика, механика, информатика сериясы = Серия математика, механика, информатика)
Рубрики: Механика
Кл.слова (ненормированные):
теңдеу -- бірінші ретті дербес туындылар -- дифференциалдық теңдеу -- Алдибеков Т.М -- Алдажарова М.М -- Хабаршы-Вестник
Аннотация: Туындылардың бiреуiне байланысты шешiлген бiрiншi реттi дербес туындылы сызықты емес дифференциалдық теңдеудiң шешiмдерiнiң асимптотикалық мiнезi зерттеледi. Бiрiншi реттi дербес туындылы дифференциалдық теңдеудiң әрқайсысының қандайда бiр шарттарда фундаменталды интегрладар жүйесi немесе интегралдық базисi болады. Айта кететiнi, жалпы бiрiншi реттi сызықты дербес туындылы дифференциалдық теңдеудiң тривиалды емес интегралы болмауы да мұмкiн. Бiрiншi реттi сызықты дербес туындылы дифференциалдық теңдеу үшiн, оның коэффициенттерi шенелмеген жиында берiлiп, үзiлiссiз бiрiншi реттi дербес туындылары болса және бiрiншi коэффициентi бiрге тең болса, интегралды базис бар болады. Бұл жүмыста туындылардың бiреуiне байланысты шешiлген бiрiншi реттi дербес туындылы сызықты емес дифференциалдық теңдеу екi жағынан бiрiншi реттi дербес туындылы дифференциалдық теңдеулермен бағаланады. Дифференциалдық теңсiздiктердi пайдалана отырып, туындылардың бiреуiне байланысты шешiлген бiрiншi реттi дербес туындылы сызықты емес теңдеудiң тәуелсiз айнымалыларнының бiреуi плюс шексiздiкке ұмтылған жағдайда нөлге ұмтылатын шешiмi бар болатыны дәлелденген. Қазiргi таңда дербес туындылы дифференциалдық теңдеулер теориясы жаратылыс танудың түрлі салаларында өз қолданыстарын табуда.
Держатели документа:
ЗКГУ
Доп.точки доступа:
Aldazharova, M.M.
2.
Подробнее
22.1
M75
Mirzakulova, A. E
The Cauchy problem for sinqularly perturbed hiqher-order inteqro-differential equations [Текст] / A.E Mirzakulova // Әл - Фараби ат. ҚҰУ Хабаршы = Вестник КАЗНУ им Аль - Фараби. - Алматы, 2018. - №1(97). - Р. 14-24. - (Математика, механика, информатика сериясы = Серия математика, механика, информатика)
ББК 22.1
Рубрики: Математика
Кл.слова (ненормированные):
сингулярное возмущение -- малый параметр -- начальные функции -- асимптотика -- предельный переход
Аннотация: The article is devoted to research the Cauchy problem for singularly perturbed higher-order linearintegro-differential equation with a small parameter at the highest derivatives, provided that theroots of additional characteristic equation have negative signs. The aim of this paper is to bringasymptotic estimation of the solution of a singularly perturbed Cauchy problem and the asymptoticconvergence of the solution of a singularly perturbed initial value problem to the solution ofan unperturbed initial value problem. In this paper the fundamental system of solutions, initialfunctions of a singularly perturbed homogeneous differential equation are constructed and theirasymptotic estimates are obtained. By using the initial functions, we obtain an explicit analyticalformula of the solution. The theorem about asymptotic estimate of a solution of the initial valueproblem is proved. The unperturbed Cauchy problem is constructed. We find the solution of theunperturbed Cauchy problem. An estimate difference of the solution of a singularly perturbedand unperturbed initial value problems. The asymptotic convergence of solution of a singularlyperturbed initial value problem to the solution of the unperturbed initial value problem is proved.
Держатели документа:
ЗКГУ
Доп.точки доступа:
Dauylbaev, M.K
Akhmet, M.U
Dzhetpisbaeva, A.K
M75
Mirzakulova, A. E
The Cauchy problem for sinqularly perturbed hiqher-order inteqro-differential equations [Текст] / A.E Mirzakulova // Әл - Фараби ат. ҚҰУ Хабаршы = Вестник КАЗНУ им Аль - Фараби. - Алматы, 2018. - №1(97). - Р. 14-24. - (Математика, механика, информатика сериясы = Серия математика, механика, информатика)
Рубрики: Математика
Кл.слова (ненормированные):
сингулярное возмущение -- малый параметр -- начальные функции -- асимптотика -- предельный переход
Аннотация: The article is devoted to research the Cauchy problem for singularly perturbed higher-order linearintegro-differential equation with a small parameter at the highest derivatives, provided that theroots of additional characteristic equation have negative signs. The aim of this paper is to bringasymptotic estimation of the solution of a singularly perturbed Cauchy problem and the asymptoticconvergence of the solution of a singularly perturbed initial value problem to the solution ofan unperturbed initial value problem. In this paper the fundamental system of solutions, initialfunctions of a singularly perturbed homogeneous differential equation are constructed and theirasymptotic estimates are obtained. By using the initial functions, we obtain an explicit analyticalformula of the solution. The theorem about asymptotic estimate of a solution of the initial valueproblem is proved. The unperturbed Cauchy problem is constructed. We find the solution of theunperturbed Cauchy problem. An estimate difference of the solution of a singularly perturbedand unperturbed initial value problems. The asymptotic convergence of solution of a singularlyperturbed initial value problem to the solution of the unperturbed initial value problem is proved.
Держатели документа:
ЗКГУ
Доп.точки доступа:
Dauylbaev, M.K
Akhmet, M.U
Dzhetpisbaeva, A.K
3.
Подробнее
28
И 39
The study of neurotropic action of alkaloids and their derivatives [Текст] = Изучение нейротропного действия алкалоидов и их производных / М.А. Romanova [et al.] // Известия НАН РК. Серия биологическая и медицинская. - 2019. - №3. - С. 56-63
ББК 28
Рубрики: Биологические науки
Кл.слова (ненормированные):
алкалоиды -- нейротропное действие -- эмоциональный стресс -- производные алкалоидов -- биология
Аннотация: В статье представлены результаты исследования нейротропного действия алкалоидов и их производных. Установлено, что изучаемые соединения 8-ацетилгармин, ((E)-1-(7-Метокси-1-метил-9H-пиридо[3,4-b]индол-8-ил)-3-(2,4-диметоксифенил)проп-2-ен-1-он,лаппако-нитини цитизин в дозе 5 мг/кг обладают нейротропным действием, повышая уровень ориентировочной реакции животных в тесте «Открытое поле», также нормализуют эмоциональное состояние, понижая уровень тревожности и чувства страха у животных в тесте «Приподнятый крестообразный лабиринт».
Держатели документа:
ЗКГУ
Доп.точки доступа:
Romanova, М.А.
Seidakhmetova, R.B.
Toktarkhan, N.A.
Zhanymkhanova, P.Zh.
Adekenov, S.M.
И 39
The study of neurotropic action of alkaloids and their derivatives [Текст] = Изучение нейротропного действия алкалоидов и их производных / М.А. Romanova [et al.] // Известия НАН РК. Серия биологическая и медицинская. - 2019. - №3. - С. 56-63
Рубрики: Биологические науки
Кл.слова (ненормированные):
алкалоиды -- нейротропное действие -- эмоциональный стресс -- производные алкалоидов -- биология
Аннотация: В статье представлены результаты исследования нейротропного действия алкалоидов и их производных. Установлено, что изучаемые соединения 8-ацетилгармин, ((E)-1-(7-Метокси-1-метил-9H-пиридо[3,4-b]индол-8-ил)-3-(2,4-диметоксифенил)проп-2-ен-1-он,лаппако-нитини цитизин в дозе 5 мг/кг обладают нейротропным действием, повышая уровень ориентировочной реакции животных в тесте «Открытое поле», также нормализуют эмоциональное состояние, понижая уровень тревожности и чувства страха у животных в тесте «Приподнятый крестообразный лабиринт».
Держатели документа:
ЗКГУ
Доп.точки доступа:
Romanova, М.А.
Seidakhmetova, R.B.
Toktarkhan, N.A.
Zhanymkhanova, P.Zh.
Adekenov, S.M.
4.
Подробнее
22.1
A88
Assanova , А.Т.
ON THE CONSTRUCTIVE METHOD FOR SOLVING [Текст] / А.Т. Assanova // Сборник материалов международной научно-практической конференции «ТАЙМАНОВСКИЕ ЧТЕНИЯ - 2017», посвященной 100 - летию доктора физико-математических наук, академика А.Д.ТАЙМАНОВА, 25 октября . - Uralsk, 2017. - P. 17-20
ББК 22.1
Рубрики: Математика
Кл.слова (ненормированные):
present report -- mixed derivatives -- solvability conditions --
Аннотация: The present report is devoted to theresearch and results on the nonlocal problem with integral conditions for the system of hyperbolic equations with mixed derivatives. In the study of dynamics of underground waters, plasma physics, cleaning technology, optimal control, and others some nonlocal boundary value problems with integral conditions arise
Держатели документа:
WKSU
A88
Assanova , А.Т.
ON THE CONSTRUCTIVE METHOD FOR SOLVING [Текст] / А.Т. Assanova // Сборник материалов международной научно-практической конференции «ТАЙМАНОВСКИЕ ЧТЕНИЯ - 2017», посвященной 100 - летию доктора физико-математических наук, академика А.Д.ТАЙМАНОВА, 25 октября . - Uralsk, 2017. - P. 17-20
Рубрики: Математика
Кл.слова (ненормированные):
present report -- mixed derivatives -- solvability conditions --
Аннотация: The present report is devoted to theresearch and results on the nonlocal problem with integral conditions for the system of hyperbolic equations with mixed derivatives. In the study of dynamics of underground waters, plasma physics, cleaning technology, optimal control, and others some nonlocal boundary value problems with integral conditions arise
Держатели документа:
WKSU
5.
Подробнее
65.261
K22
Kassenova, G. E
STATE REGULATION OF FINANCIAL MARKETS: WORLD EXPERIENCE AND NATIONAL PRACTISE [Текст] / G. E Kassenova, A. A Kabdresh // Транзитная экономика. - 2020. - №2. - с. 75-82
ББК 65.261
Рубрики: Финансы
Кл.слова (ненормированные):
financial Institution -- bank -- capital market -- protecting investors
Аннотация: The basic concepts of the securities market and models of its regulation, which have developed in international practice, are presented. The concept of information disclosure and the mechanism for its implementation in the primary and secondary markets are considered on the example of many countries. A country analysis of the organizationnal structures responsible for the regulation of the securities market and the derivatives market was carried out. A comparative analysis of the order of regulation of trading systems broker - dealer companies, commercial banks and other professional participants of the stock market is given. Developed and Emerging Markets Experience Revealed preventing manipulation, insider practices and other violations of the fair and equitable pricing mechanism.
Держатели документа:
ЗКУ им М. Утемисова
Доп.точки доступа:
Kabdresh, A. A
K22
Kassenova, G. E
STATE REGULATION OF FINANCIAL MARKETS: WORLD EXPERIENCE AND NATIONAL PRACTISE [Текст] / G. E Kassenova, A. A Kabdresh // Транзитная экономика. - 2020. - №2. - с. 75-82
Рубрики: Финансы
Кл.слова (ненормированные):
financial Institution -- bank -- capital market -- protecting investors
Аннотация: The basic concepts of the securities market and models of its regulation, which have developed in international practice, are presented. The concept of information disclosure and the mechanism for its implementation in the primary and secondary markets are considered on the example of many countries. A country analysis of the organizationnal structures responsible for the regulation of the securities market and the derivatives market was carried out. A comparative analysis of the order of regulation of trading systems broker - dealer companies, commercial banks and other professional participants of the stock market is given. Developed and Emerging Markets Experience Revealed preventing manipulation, insider practices and other violations of the fair and equitable pricing mechanism.
Держатели документа:
ЗКУ им М. Утемисова
Доп.точки доступа:
Kabdresh, A. A
6.
Подробнее
35
J21
Jalmakhanbetova, R.I.
Calculate the standard enthalpies of combustion , formation and melting of the complex roseofungin with a-, B- and y- cyclodextrin. [Текст] / R.I. Jalmakhanbetova, Ye. M. Suleimen, B. K. Kasenov // News of national academy of sciences of the republic of Kazakhstan. . - 2021. - №3. - P. 44-47
ББК 35
Рубрики: chemical Technology
Кл.слова (ненормированные):
roseofungin -- cyclodextrin -- standard enthalpy of combustion -- standard enthalpy of formation -- enthalpy of melting of a complex
Аннотация: One of the most important quantities in chemical thermodynamics and thermochemistry is the enthalpy of combustion. Of the currently existing methods for calculating the heat of combustion of natural and synthetic organic compounds, the most acceptable and correct in our case was the Karash method. In this study, the standard enthalpy of combustion, the standard enthalpy of formation, and the melting enthalpy of the antibiotic roseofungin and its cyclodextrin derivatives were calculated. As a result of the study, the thermodynamic constants of the standard enthalpies of combustion, standard enthalpies of formation, and the enthalpies of melting of the above compounds were calculated, which are of interest for physicochemical modeling of processes with their participation, serve as initial information arrays for loading into fundamental thermodynamic data banks and reference books, and is also important for standardization and certification of these complexes. It should be noted that the presence of a large number of hydroxyl groups in the structures of the studied complexes allows them to be attributed to polar compounds.
Держатели документа:
WKU
Доп.точки доступа:
Suleimen, Ye.M.
Kasenov, B.K.
J21
Jalmakhanbetova, R.I.
Calculate the standard enthalpies of combustion , formation and melting of the complex roseofungin with a-, B- and y- cyclodextrin. [Текст] / R.I. Jalmakhanbetova, Ye. M. Suleimen, B. K. Kasenov // News of national academy of sciences of the republic of Kazakhstan. . - 2021. - №3. - P. 44-47
Рубрики: chemical Technology
Кл.слова (ненормированные):
roseofungin -- cyclodextrin -- standard enthalpy of combustion -- standard enthalpy of formation -- enthalpy of melting of a complex
Аннотация: One of the most important quantities in chemical thermodynamics and thermochemistry is the enthalpy of combustion. Of the currently existing methods for calculating the heat of combustion of natural and synthetic organic compounds, the most acceptable and correct in our case was the Karash method. In this study, the standard enthalpy of combustion, the standard enthalpy of formation, and the melting enthalpy of the antibiotic roseofungin and its cyclodextrin derivatives were calculated. As a result of the study, the thermodynamic constants of the standard enthalpies of combustion, standard enthalpies of formation, and the enthalpies of melting of the above compounds were calculated, which are of interest for physicochemical modeling of processes with their participation, serve as initial information arrays for loading into fundamental thermodynamic data banks and reference books, and is also important for standardization and certification of these complexes. It should be noted that the presence of a large number of hydroxyl groups in the structures of the studied complexes allows them to be attributed to polar compounds.
Держатели документа:
WKU
Доп.точки доступа:
Suleimen, Ye.M.
Kasenov, B.K.
7.
Подробнее
35
R18
Rakhimberlinova, Zh. B.
Chemical activation of the surface of the burnt rock by various modifiers. [Текст] / Zh. B. Rakhimberlinova, I. V. Kulakov, A.Zh. Alimzhanova, M. М. Mussirepov, N. E. Nakypbekova // News of national academy of sciences of the republic of Kazakhstan. . - 2021. - №3. - P. 81-86
ББК 35
Рубрики: chemical Technology
Кл.слова (ненормированные):
oxidized coals -- humic acids -- inorganic surfaces -- burnt rock -- host rock -- modifiers
Аннотация: This article presents the results of experimental studies of the process of grafting humic acids and their functional derivatives on modified and unmodified surfaces of burnt rock. It is shown that the inoculation of humic acids on inorganic carriers is more successful with the preliminary activation of the surface of burnt rocks.
Держатели документа:
WKU
Доп.точки доступа:
Kulakov, I.V.
Alimzhanova, A.Zh.
Mussirepov, M.М.
Nakypbekova, N.E.
R18
Rakhimberlinova, Zh. B.
Chemical activation of the surface of the burnt rock by various modifiers. [Текст] / Zh. B. Rakhimberlinova, I. V. Kulakov, A.Zh. Alimzhanova, M. М. Mussirepov, N. E. Nakypbekova // News of national academy of sciences of the republic of Kazakhstan. . - 2021. - №3. - P. 81-86
Рубрики: chemical Technology
Кл.слова (ненормированные):
oxidized coals -- humic acids -- inorganic surfaces -- burnt rock -- host rock -- modifiers
Аннотация: This article presents the results of experimental studies of the process of grafting humic acids and their functional derivatives on modified and unmodified surfaces of burnt rock. It is shown that the inoculation of humic acids on inorganic carriers is more successful with the preliminary activation of the surface of burnt rocks.
Держатели документа:
WKU
Доп.точки доступа:
Kulakov, I.V.
Alimzhanova, A.Zh.
Mussirepov, M.М.
Nakypbekova, N.E.
8.
Подробнее
35
V99
Vysotskaya, N. A.
Some features of electrodeposition of metals from electrolytes with surfactants. [Текст] / N. A. Vysotskaya, B.N. Kabylbekova, D. D. Asylbekova, R. S. Spabekova, E. G. Lukin // News of national academy of sciences of the republic of Kazakhstan. . - 2021. - №3. - P. 99-103
ББК 35
Рубрики: chemical Technology
Кл.слова (ненормированные):
anticorrosive properties -- electroplating -- surfactants -- thiourea derivatives
Аннотация: For a long time, the use of various surfactants in the composition of simple electrolytes by researchers to improve the quality of metal coatings with cadmium and zinc has been an urgent task.Surfactants contribute to the grinding of the coating structure, the elimination of their porosity and the appearance of anti-corrosion properties of coatings. For example, cadmium electroplated coatings require corrosion resistance, since they are operated in tropical climates, in underground tunnels. Zinc coatings are widely used in building structures and roofing, on electrified railways and high-voltage power lines, in the mining industry and water pipes, as well as for galvanizing the body material in modern all-terrain vehicles to pass in hard-to-reach places without being subjected to corrosion.The object of our research is the process of electrodeposition of cadmium and zinc from simple acidic electrolytes with surfactants, which are thiourea derivatives of dialkyl-phosphorous acids in the current density range of 0.5-3.5 A /dm2, at room temperature. To confirm the quality of the obtained electroplating, we used a JSM-6490LV scanning electron microscope with INSA Energu energy–dispersion microanalysis and HKL-Basicc structural analysis systems with a useful magnification of 300000.
Держатели документа:
WKU
Доп.точки доступа:
Kabylbekova, B.N.
Asylbekova, D.D.
Spabekova, R.S.
Lukin, E.G.
V99
Vysotskaya, N. A.
Some features of electrodeposition of metals from electrolytes with surfactants. [Текст] / N. A. Vysotskaya, B.N. Kabylbekova, D. D. Asylbekova, R. S. Spabekova, E. G. Lukin // News of national academy of sciences of the republic of Kazakhstan. . - 2021. - №3. - P. 99-103
Рубрики: chemical Technology
Кл.слова (ненормированные):
anticorrosive properties -- electroplating -- surfactants -- thiourea derivatives
Аннотация: For a long time, the use of various surfactants in the composition of simple electrolytes by researchers to improve the quality of metal coatings with cadmium and zinc has been an urgent task.Surfactants contribute to the grinding of the coating structure, the elimination of their porosity and the appearance of anti-corrosion properties of coatings. For example, cadmium electroplated coatings require corrosion resistance, since they are operated in tropical climates, in underground tunnels. Zinc coatings are widely used in building structures and roofing, on electrified railways and high-voltage power lines, in the mining industry and water pipes, as well as for galvanizing the body material in modern all-terrain vehicles to pass in hard-to-reach places without being subjected to corrosion.The object of our research is the process of electrodeposition of cadmium and zinc from simple acidic electrolytes with surfactants, which are thiourea derivatives of dialkyl-phosphorous acids in the current density range of 0.5-3.5 A /dm2, at room temperature. To confirm the quality of the obtained electroplating, we used a JSM-6490LV scanning electron microscope with INSA Energu energy–dispersion microanalysis and HKL-Basicc structural analysis systems with a useful magnification of 300000.
Держатели документа:
WKU
Доп.точки доступа:
Kabylbekova, B.N.
Asylbekova, D.D.
Spabekova, R.S.
Lukin, E.G.
Страница 1, Результатов: 8