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Genre:Естественные науки (natural_sciences)
language:English
publication type:periodical press (Magazines)
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1-10 of 10
periodical press (Magazines)
GOL'DMAN N. L.
Gol'dman, N. L. Some new statements for nonlinear parabolic problems [Text] / N. L. Gol'dman; communicated by K. N. Ospanov // Eurasian Mathematical Journal. - 2021. - V. 12, № 1. - p. 21-38. ISSN
UDC:
517.956.4
Subject headings
- Nonlinear problems for parabolic equations
Annotation
The work is connected with investigation of nonlinear problems for parabolic equations with an unknown coefficient at the derivative with respect to time
Keywords
parabolic equations, unique solvability, Holder spaces, quasisolution, a priori estimates
Kazakhstan
0/0 Free
periodical press (Magazines)
TULEMISOVA G.
Tulemisova, G. Study of the bottom sediments of reservoirs of Ural-Caspian basin [Text] / G. Tulemisova, R. Abdinov , A. Amangosova [et al.] // Қазақстан Республикасы Ұлттық ғылым академиясының хабарлары. Геология және техникалық ғылымдар сериясы. - 2022. - № 1 (451). - P. 126-134. - Bibliogr.: p. 126-134 ISSN 2224-5278.
UDC:
574.64
Subject headings
- Aquatic toxicology
Annotation
The article presents the results of studies of the sediments on the content of heavy metals in reservoirs of the Ural-Caspian basin
Keywords
the bottom sediments, heavy metals, maximum permissible concentration, the atomic absorption spectroscopy, hydrology
Kazakhstan
0/0 Free
periodical press (Magazines)
SMOLYAR V. A.
Smolyar, V. A. Structure of the information system of Kazakhstan fresh groundwater resources [Text] / V. A. Smolyar, O. L. Miroshnichenko , L. Y. Trushel [et al.] // Қазақстан Республикасы Ұлттық ғылым академиясының хабарлары. Геология және техникалық ғылымдар сериясы. - 2022. - № 4 (454). - P. 182-198. - Bibliogr.: p. 197-198 ISSN 2224-5278.
UDC:
551.444(574)
Subject headings
- Groundwater resources of Kazakhstan
Annotation
The article examines the structure of the information system of Kazakhstan fresh groundwater resources
Keywords
groundwater, groundwater resources, groundwater information system, groundwater managment, information systems
Kazakhstan
0/0 Free
periodical press (Magazines)
OLZHABAYEVA ZH.
Olzhabayeva, Zh. Study of changes in the histological structure of the gills of carp and zander living in lake Balkhash [Text] / Zh. Olzhabayeva, B. Abdullaeva , I. Zharkova [et al.] // Қарағанды университетінің хабаршысы. Биология. Медицина. География сериясы. - 2023. - № 2 (110). - P. 100-106. - Bibliogr.: p. 100-106 ISSN 2518-7201.
UDC:
591.87
Subject headings
- Animal histology. Histology of the epithelium
Annotation
The purpose of the study was to study changes in the histological structures of the gills of carp and zander living in Lake Balkhash
Keywords
gills pathology, lamellae, hemorrhages, necrosis, hyperplasia, carp, zander, heavy metals
Kazakhstan
0/0 Free
periodical press (Magazines)
MADIYEVA A. N.
Madiyeva, A. N. Study the germination of seeds of Sudanese grass (Sorghum × drummondii) treated by ethylene glycol and propylene glycol cryoprotectants [Text] / A. N. Madiyeva, M. M. Silantyeva // Қарағанды университетінің хабаршысы. Биология. Медицина. География сериясы. - 2023. - № 1 (109). - P. 76-83. - Bibliogr.: p. 76-83 ISSN 2518-7201.
UDC:
604.4:631.8
Subject headings
- Fermentation and products of cell cultures. Stimulation of plant growth
Annotation
The present study was conducted at an objective study of the seeds of Sudanese grass for cryopreservation and viability of seeds
Keywords
Sudanese grass, seeds, cryoprotectant, plants, ethyleneglycol, propyleneglykol, germination, liquid nitrogen, cryopreservation
Kazakhstan
0/0 Free
periodical press (Magazines)
GAVRILKOVA E. A.
Gavrilkova, E. A. Study of the influence of some physical factors on the viability of seeds of Echinaceae pallida variety "Lebedushka" [Text] / E. A. Gavrilkova, S. U. Tleukenova , A. K. Ramazanov [et al.] // Қарағанды университетінің хабаршысы. Биология. Медицина. География сериясы. - 2023. - № 4 (112). - P. 42-48. - Bibliogr.: p. 47-48 ISSN 2518-7201.
UDC:
604
Subject headings
- Biotechnology products
Annotation
The article presents data on testing of germination parameters of seeds of Echinaceae pallida variety “Lebedushka” under the influence of physical factors
Keywords
Echinacea pallida, seeds, magnetic fields, babbling, radiation by He-Ne laser, cryogenic storage, germination
Kazakhstan
0/0 Free
periodical press (Magazines)
AMANTAYEV N. G.
Amantayev, N. G. Selecting sterilization conditions for the explants of different potato varieties to be in vitro introduced into the culture [Text] / N. G. Amantayev, M. M. Silantyeva , V. T. Khassanov // Қарағанды университетінің хабаршысы. Биология. Медицина. География сериясы. - 2023. - № 3 (111). - P. 16-24. - Bibliogr.: p. 21-22 ISSN 2518-7201.
UDC:
635.21
Subject headings
- Potato. Solanum tuberosum L
Annotation
The authors presented the results o f the effect of various sterilizing agents as well as the treatment timing on the viability o f plant explants during microclonal propagation o f potatoes o f the following varieties: Aladin, Gala, Nevsky, Udacha and Kostanay Novosti
Keywords
potato tubers, meristem sprouts, sterilizing solutions, explant, exposure, sterilization
Kazakhstan
0/0 Free
periodical press (Magazines)
SARSENBEKOVA A. ZH.
Sarsenbekova, A. Zh. Study of thermal stability and determination of effective activation energy values during degradation of unsaturated polyester copolymers in the air atmosphere [Text] / A. Zh. Sarsenbekova, A. N. Bolatbay , V. V. Morgun [et al.] // Bulletin of the Karaganda University. Chemistry Series. - 2022. - № 1. - С. 86-91. - Bibliogr.: p. 90 ISSN 2518-718Х.
UDC:
543.573
Subject headings
- Methods related to weight change. Thermogravimetry
Annotation
The article presents the results of a study of the kinetic parameters of copolymers based on polyethylene glycol fumarates, as well as external and internal effects on them
Keywords
thermogravimetry, thermal analysis, kinetic parameters, copolymers, polyethylene glycol fumarate, acrylic acid, activation energy
Kazakhstan
0/0 Free
periodical press (Magazines)
ALIYEV F. R.
Aliyev, F. R. Synthesis and study of a new mixed-layered compound GeBi3 Te4 belonging to the nBi2–mGeBi2 Te4 homologous series [Text] / F. R. Aliyev, E. N. Orujlu , D. M. Babanly // Bulletin of the Karaganda University. Chemistry Series. - 2022. - № 1. - Р. 92-98. - Bibliogr.: p. 96-97 ISSN 2518-718Х.
UDC:
546.2
Subject headings
- Nonmetals of groups III, IV, VI and elements of group zero
Annotation
In light of the structural properties of tetradymite-like layered chalcogenide compounds, the mixed-layered compound GeBi3Te4 was predicted and synthesized for the first time, which belongs to the nBi2–mGeBi2Te4 homologous series in the Ge-Te-Bi system
Keywords
Ge-Bi-Te ternary system, nBi2–mGeBi2Te4 homologous series, GeBi3 Te4 , GeBi4 Te4, tetradymitelike structure, topological insulators
Kazakhstan
0/0 Free
periodical press (Magazines)
NURMAGANBETOV ZH. S.
Nurmaganbetov, Zh. S. Synthesis and Structure of 4-Substituted (1S,9aR)-1-[(1,2,3-triazol-1-yl)methyl]octahydro-1H-quinolysines of Lupinine [Text] / Zh. S. Nurmaganbetov, S. D. Fazylov , K. M. Turdybekov [et al.] // Bulletin of the Karaganda University. Chemistry Series. - 2022. - № 2. - Р. 12-22. - Bibliogr.: p. 20-21 ISSN 2518-718Х.
UDC:
547.94
Subject headings
- Natural alkaloids
Annotation
The article presents results on the synthesis and investigation of the structural features of a number of 1,4-disubstituted 1H-1,2,3-triazole derivatives of the alkaloid lupinine
Keywords
quinolysine alkaloids, lupinine, azides, triazoles, methanesulfonyl chloride, terminal alkynes, 1,3- dipolar cycloaddition reaction, X-ray structural analysis
Kazakhstan
0/0 Free
periodical press (Magazines)
0/0 Free
TULEMISOVA G.
STUDY OF THE BOTTOM SEDIMENTS OF RESERVOIRS OF URAL-CASPIAN BASIN
periodical press (Magazines)
0/0 Free
SMOLYAR V. A.
STRUCTURE OF THE INFORMATION SYSTEM OF KAZAKHSTAN FRESH GROUNDWATER RESOURCES
periodical press (Magazines)
0/0 Free
OLZHABAYEVA ZH.
STUDY OF CHANGES IN THE HISTOLOGICAL STRUCTURE OF THE GILLS OF CARP AND ZANDER LIVING IN LAKE BALKHASH
periodical press (Magazines)
0/0 Free
MADIYEVA A. N.
STUDY THE GERMINATION OF SEEDS OF SUDANESE GRASS (SORGHUM × DRUMMONDII) TREATED BY ETHYLENE GLYCOL AND PROPYLENE GLYCOL CRYOPROTECTANTS
periodical press (Magazines)
0/0 Free
GAVRILKOVA E. A.
STUDY OF THE INFLUENCE OF SOME PHYSICAL FACTORS ON THE VIABILITY OF SEEDS OF ECHINACEAE PALLIDA VARIETY "LEBEDUSHKA"
periodical press (Magazines)
0/0 Free
AMANTAYEV N. G.
SELECTING STERILIZATION CONDITIONS FOR THE EXPLANTS OF DIFFERENT POTATO VARIETIES TO BE IN VITRO INTRODUCED INTO THE CULTURE
periodical press (Magazines)
0/0 Free
SARSENBEKOVA A. ZH.
STUDY OF THERMAL STABILITY AND DETERMINATION OF EFFECTIVE ACTIVATION ENERGY VALUES DURING DEGRADATION OF UNSATURATED POLYESTER COPOLYMERS IN THE AIR ATMOSPHERE
periodical press (Magazines)
0/0 Free
ALIYEV F. R.
SYNTHESIS AND STUDY OF A NEW MIXED-LAYERED COMPOUND GEBI3 TE4 BELONGING TO THE NBI2–MGEBI2 TE4 HOMOLOGOUS SERIES
periodical press (Magazines)
0/0 Free
NURMAGANBETOV ZH. S.
SYNTHESIS AND STRUCTURE OF 4-SUBSTITUTED (1S,9AR)-1-[(1,2,3-TRIAZOL-1-YL)METHYL]OCTAHYDRO-1H-QUINOLYSINES OF LUPININE
periodical press (Magazines)
0/0 Free