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Жанр:Естественные науки (natural_sciences)
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171-180 из 219
периодические издания(Журналы)
PANSHINA S. YU.
Panshina, S. Yu. Synthesis of cucurbit [6] uril using 1-hydroxyethylidene-1,1-diphosphonic acid as a “Green Catalyst” [Text] / S. Yu. Panshina, A. A. Bakibaev , A. N. Guslyakov [et al.] // Қарағанды университетінің хабаршысы. Химия сериясы. - 2022. - № 4. - Р. 5-13. - Bibliogr.: p. 10-11 ISSN 2518-718Х.
УДК:
544.4
Предметная рубрика
- Chemical kinetics. Catalysis
Аннотация
In this work, 1-hydroxyethylidene-1,1-diphosphonic acid (HEDP) was used for the first time as a catalyst for “Green chemistry” in the synthesis of cucurbit[6]uril in an aqueous medium
Ключевые слова
cucurbit[6]uril, 1-hydroxyethylidene-1,1-diphosphonic acid, glycoluril, paraformaldehyde, oligomer
Казахстаника
0/0 Свободно
периодические издания(Журналы)
SHELKOVNIKOV V. V.
Shelkovnikov, V. V. Study of the Methionine Electrooxidation at an Electrode Modified with Vitamin B12 and Multi-Walled Carbon Nanotubes [Text] / V. V. Shelkovnikov, A. M. Altyev , M. S. Fryanova // Қарағанды университетінің хабаршысы. Химия сериясы. - 2022. - № 4. - Р. 99-106. - Bibliogr.: p. 104-105 ISSN 2518-718Х.
УДК:
543.55
Предметная рубрика
- Electroanalytical methods of analysis. Electrochemical methods of analysis
Аннотация
The electrochemical behavior of methionine at an electrode modified with vitamin B12 and multi-walled carbon nanotubes has been studied in this work
Ключевые слова
methionine, modified electrode, vitamin B12, electrooxidation, cobalamin, electron, proton, multi-walled carbon nanotubes
Казахстаника
0/0 Свободно
периодические издания(Журналы)
MULDAKHMETOV Z. M.
Muldakhmetov, Z. M. Synthesis of a Composite Based on Humic Acid Tuned to Sorbed Copper Ion [Text] / Z. M. Muldakhmetov, A. M. Gazaliev , A. Kh. Zhakina [et al.] // Қарағанды университетінің хабаршысы. Химия сериясы. - 2022. - № 4. - Р. 182-187. - Bibliogr.: p. 186-187 ISSN 2518-718Х.
УДК:
547
Предметная рубрика
- Organic chemistry
Аннотация
In this study, a modified cross-linked composite based on humic acids, pre-tuned to sorbed copper ion, was obtained
Ключевые слова
natural polymer, multi-walled carbon nanotubes, composite, template, tuning, sorption, functionalization, ultrasound
Казахстаника
0/0 Свободно
периодические издания(Журналы)
HOUBI A.
Houbi, A. Synthesis and Microwave Absorption Properties of (Ni0.5Zn0.5Fe2O4/CI/CB) Ternary Composites [Text] / A. Houbi, A. A. Zharmenov; Y. Atassi [et al.] // Қарағанды университетінің хабаршысы. Химия сериясы. - 2022. - № 4. - Р. 142-151. - Bibliogr.: p. 149-150 ISSN 2518-718Х.
УДК:
542.9
Предметная рубрика
- Chemical reactions. Selected chemical methods
Аннотация
In this work, ternary composites of NiZn ferrite/carbonyl iron/carbon black (Ni0.5Zn0.5Fe2O4/CI/CB) were prepared via two stages
Ключевые слова
NiZn ferrite, сarbonyl iron, сarbon black, reflection loss, absorption bandwidth, matching frequency, paraffin wax matrix, surface density
Казахстаника
0/0 Свободно
периодические издания(Журналы)
ZULFUGAROVA S. M.
Zulfugarova, S. M. Synthesis of Transition Metal Ferrites (Co, Cu, Ni, Mn) by the Sol-Gel Method with Combustion and the Use of Microwave Processing [Text] / S. M. Zulfugarova, G. R. Azimova , Z. F. Aleskerova [et al.] // Қарағанды университетінің хабаршысы. Химия сериясы. - 2022. - № 4. - Р. 118-135. - Bibliogr.: p. 130-134 ISSN 2518-718Х.
УДК:
546
Предметная рубрика
- Inorganic chemistry
Аннотация
This review considers recent work on the synthesis of transition metal ferrites (Co, Cu, Ni, Mn) by sol-gel method with combustion, as well as the effect of microwave radiation
Ключевые слова
ferrites, sol-gel method with combustion, complexing agents, microwave technology, microwave power, dispersion, texture, specific surface area, particle size
Казахстаника
0/0 Свободно
периодические издания(Журналы)
SEKSENOVA D. U.
Seksenova, D. U. Sarcocystis in some rodents and birds [Text] / D. U. Seksenova, B. K. Esimov , Z. A. Ibragimova // Қазақстан Республикасы Ұлттық ғылым академиясының хабарлары. Биология және медицина сериясы. - 2020. - № 2 (338). - P. 56-61. - Bibliogr.: p. 61 ISSN 2224-5308.
УДК:
591.2
Предметная рубрика
- Diseases of (undomesticated) animals. Animal pathology
Аннотация
The proposed work is devoted to study the fauna and cycles of the development of micromorphology of representatives of the genus Sarcocystis of some rodents and birds
Ключевые слова
sarcocyst, sarcosporidiosis, micromorphology, definitive host, schizogony, gametogony, sporogony, merozoite, саркоциста, саркоспоридиоз
Казахстаника
0/0 Свободно
периодические издания(Журналы)
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.] // Қарағанды университетінің хабаршысы. Химия сериясы. - 2022. - № 1. - С. 86-91. - Bibliogr.: p. 90 ISSN 2518-718Х.
УДК:
543.573
Предметная рубрика
- Methods related to weight change. Thermogravimetry
Аннотация
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
Ключевые слова
thermogravimetry, thermal analysis, kinetic parameters, copolymers, polyethylene glycol fumarate, acrylic acid, activation energy
Казахстаника
0/0 Свободно
периодические издания(Журналы)
GAVRILOVA N. N.
Gavrilova, N. N. Selection of a nutrient medium for growing bacteria which are part of an environmentally friendly veterinary probiotic preparation [Text] / N. N. Gavrilova, Zh. E. Sagidoldina , A. K. Sadanov [et al.] // Қазақстан Республикасы Ұлттық ғылым академиясының хабарлары. Биология және медицина сериясы. - 2020. - № 3 (339). - P. 29-34. - Bibliogr.: p. 34 ISSN 2224-5308.
УДК:
579
Предметная рубрика
- Микробиология
Аннотация
The aim of the study was to select the optimal nutrient medium for growing bacteria that are part of the probiotic
Ключевые слова
probiotic bacteria, growth media , antimicrobial activity, viable cells'titer, пробиотикалық бактериялар, ветеринарлық препарат, пробиотические бактерии, ветеринарный препарат
Казахстаника
0/0 Свободно
периодические издания(Журналы)
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 // Қарағанды университетінің хабаршысы. Химия сериясы. - 2022. - № 1. - Р. 92-98. - Bibliogr.: p. 96-97 ISSN 2518-718Х.
УДК:
546.2
Предметная рубрика
- Nonmetals of groups III, IV, VI and elements of group zero
Аннотация
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
Ключевые слова
Ge-Bi-Te ternary system, nBi2–mGeBi2Te4 homologous series, GeBi3 Te4 , GeBi4 Te4, tetradymitelike structure, topological insulators
Казахстаника
0/0 Свободно
периодические издания(Журналы)
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.] // Қарағанды университетінің хабаршысы. Химия сериясы. - 2022. - № 2. - Р. 12-22. - Bibliogr.: p. 20-21 ISSN 2518-718Х.
УДК:
547.94
Предметная рубрика
- Natural alkaloids
Аннотация
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
Ключевые слова
quinolysine alkaloids, lupinine, azides, triazoles, methanesulfonyl chloride, terminal alkynes, 1,3- dipolar cycloaddition reaction, X-ray structural analysis
Казахстаника
0/0 Свободно
PANSHINA S. YU.
SYNTHESIS OF CUCURBIT [6] URIL USING 1-HYDROXYETHYLIDENE-1,1-DIPHOSPHONIC ACID AS A “GREEN CATALYST”
периодические издания(Журналы)
0/0 Свободно
SHELKOVNIKOV V. V.
STUDY OF THE METHIONINE ELECTROOXIDATION AT AN ELECTRODE MODIFIED WITH VITAMIN B12 AND MULTI-WALLED CARBON NANOTUBES
периодические издания(Журналы)
0/0 Свободно
MULDAKHMETOV Z. M.
SYNTHESIS OF A COMPOSITE BASED ON HUMIC ACID TUNED TO SORBED COPPER ION
периодические издания(Журналы)
0/0 Свободно
HOUBI A.
SYNTHESIS AND MICROWAVE ABSORPTION PROPERTIES OF (NI0.5ZN0.5FE2O4/CI/CB) TERNARY COMPOSITES
периодические издания(Журналы)
0/0 Свободно
ZULFUGAROVA S. M.
SYNTHESIS OF TRANSITION METAL FERRITES (CO, CU, NI, MN) BY THE SOL-GEL METHOD WITH COMBUSTION AND THE USE OF MICROWAVE PROCESSING
периодические издания(Журналы)
0/0 Свободно
периодические издания(Журналы)
0/0 Свободно
SARSENBEKOVA A. ZH.
STUDY OF THERMAL STABILITY AND DETERMINATION OF EFFECTIVE ACTIVATION ENERGY VALUES DURING DEGRADATION OF UNSATURATED POLYESTER COPOLYMERS IN THE AIR ATMOSPHERE
периодические издания(Журналы)
0/0 Свободно
GAVRILOVA N. N.
SELECTION OF A NUTRIENT MEDIUM FOR GROWING BACTERIA WHICH ARE PART OF AN ENVIRONMENTALLY FRIENDLY VETERINARY PROBIOTIC PREPARATION
периодические издания(Журналы)
0/0 Свободно
ALIYEV F. R.
SYNTHESIS AND STUDY OF A NEW MIXED-LAYERED COMPOUND GEBI3 TE4 BELONGING TO THE NBI2–MGEBI2 TE4 HOMOLOGOUS SERIES
периодические издания(Журналы)
0/0 Свободно
NURMAGANBETOV ZH. S.
SYNTHESIS AND STRUCTURE OF 4-SUBSTITUTED (1S,9AR)-1-[(1,2,3-TRIAZOL-1-YL)METHYL]OCTAHYDRO-1H-QUINOLYSINES OF LUPININE
периодические издания(Журналы)
0/0 Свободно