Электронный каталог
Язык издания:Английский
Каталог:Статьи
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831-840 из 960
периодические издания(Журналы)
KAIRBEKOV ZH. K.
Kairbekov, Zh. K. Obtaining fuel products by combined hydrogenation of coal and shale [Text] / Zh. K. Kairbekov, R. G. Sarmurzina , M. Z. Esenalieva [et al.] // Kazakhstan journal for oil and gas industry. - 2023. - № 4. - С. 83-91. - Bibliogr.: p. 88-90 ISSN 2707-4226.
УДК:
662.74
Предметная рубрика
- Coal technology. Coke production
Аннотация
This article is devoted to the study of the process of obtaining fuel products of co-hydrogenation of coal and shale
Ключевые слова
coal, shale, thermocatalytic processing, hydrogenation, hydrogenation, product yield, gasoline fraction, diesel fraction
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.] // Bulletin of the Karaganda University. Chemistry Series. - 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)
JALMAKHANBETOVA R. I.
Jalmakhanbetova, R. I. Isolation and in silico SARS-CoV-2 main protease inhibition potential of chrysoeriol from Chondrilla brevirostris Fisch. & C.A. Mey [Text] / R. I. Jalmakhanbetova, Ye. M. Suleimen , N. Abe [et al.] // Bulletin of the Karaganda University. Chemistry Series. - 2022. - № 1. - Р. 78-85. - Bibliogr.: p. 84-85 ISSN 2518-718Х.
УДК:
547.972
Предметная рубрика
- Natural xanthonic, flavone and flavonol dyes
Аннотация
The article presents the results of a chemical study of Chondrilla brevirostris Fisch. and K.A. May. Several fractions were obtained by separating ethanol extract on column chromatography. Rechromatography and preparative thin-layer chromatography were used to further study the obtained fractions and the isolation of flavonoids
Ключевые слова
сhondrilla brevirostris, аsteraceae, extraction, column chromatography, flavonoid, spectroscopy, molecular docking study
Казахстаника
0/0 Свободно
периодические издания(Журналы)
YUMINOVA A. A.
Yuminova, A. A. Physical-chemical properties of FM-1 reagent as a potential collector for ion flotation of lanthanoids [Text] / A. A. Yuminova, E. A. Giniyatullina , L. M. Karieva [et al.] // Bulletin of the Karaganda University. Chemistry Series. - 2022. - № 1. - С. 113-121. - Bibliogr.: p. 120-121 ISSN 2518-718Х.
УДК:
543.63
Предметная рубрика
- Organic matter analysis
Аннотация
The physical-chemical properties of the industrial reagent “FM-1” have been investigated. These properties are necessary for evaluating its use as a collector in the processes of concentration of rare earth metal ions byion flotation
Ключевые слова
ion flotation, rare-earth elements, aminomethylenephosphonic acid salts, surface-active substance, lanthanum
Казахстаника
0/0 Свободно
периодические издания(Журналы)
SHLYAPOV R. M.
Shlyapov, R. M. Thermodynamics of chalcocite dissolving in solutions of flotation reagents [Text] / R. M. Shlyapov, Sh. K. Amerkhanova , А. S. Uali [et al.] // Bulletin of the Karaganda University. Chemistry Series. - 2022. - № 1. - Р. 122-130. - Bibliogr.: p. 128-129 ISSN 2518-718Х.
УДК:
543.42
Предметная рубрика
- Spectral analysis
Аннотация
This work describes the formation of the ionic composition of the sorption layer during the concentration ofcopper-lead and pyrite-copper-zinc ore
Ключевые слова
flotation, hydrophobicity, sorption layer of collector, flotation reagents, sulfide minerals
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 // Bulletin of the Karaganda University. Chemistry Series. - 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)
SAGYNDIKOV M. S.
Sagyndikov, M. S. Assessing polyacrylamide solution chemical stability during a polymer flood in the Kalamkas field, Western Kazakhstan [Text] / M. S. Sagyndikov, I. I. Salimgarayev , E. K. Ogay [et al.] // Bulletin of the Karaganda University. Chemistry Series. - 2022. - № 1. - Р. 99-112. - Bibliogr.: p. 110-111 ISSN 2518-718Х.
УДК:
66-922
Предметная рубрика
- Processes involving several types of molecules
Аннотация
This study is based on rheology measurements of polymer solutions and produced fluid from the offset production well associated with the Kalamkas oilfield in Western Kazakhstan
Ключевые слова
polyacrylamide, polymer solution, chemical degradation, polymer flood, iron
Казахстаника
0/0 Свободно
периодические издания(Журналы)
BURKEYEVА G. K.
Burkeyevа, G. K. "Cold Curing" of Polyethylene Glycol Maleate with Acrylic Acid and Some Physicochemical Properties of Their Solutions [Text] / G. K. Burkeyevа, Ye. M. Tazhbayev , D. M. Muslimova [et al.] // Bulletin of the Karaganda University. Chemistry Series. - 2022. - № 2. - Р. 23-32. - Bibliogr.: p. 30-31 ISSN 2518-718Х.
УДК:
541.64
Предметная рубрика
- Chemistry of macromolecules. Products of polymerization, polycondensation and polyaddition reactions
Аннотация
The possibility of using the copolymers based on unsaturated polyesters with acrylic acid (AA) as the main component (polymeric basis) for the creation of novel highly effective sealants and glues of domestic production was demonstrated
Ключевые слова
sealant, glue, unsaturated polyester, polyethylene glycol maleate, unsaturated carboxylic acid, radical copolymerization, acrylic acid, radical copolymerization, cold curing
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.] // Bulletin of the Karaganda University. Chemistry Series. - 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
периодические издания(Журналы)
VISSURKHANOVA YA. A.
Vissurkhanova, Ya. A. Mono- and Bimetallic Silver-Containing Nitrogen-Doped Carbon Composites and Their Electrocatalytic Activity [Text] / Ya. A. Vissurkhanova, N. M. Ivanova , E. A. Soboleva [et al.] // Bulletin of the Karaganda University. Chemistry Series. - 2022. - № 2. - Р. 103-114. - Bibliogr.: p. 112-113 ISSN 2518-718Х.
УДК:
544.478
Предметная рубрика
- Catalysts
Аннотация
The N-doped metal-carbon composites based on the carbonized melamine-formaldehyde polymer (MFP) with silver, silver-copper, and silver-cobalt particles were synthesized
Ключевые слова
N-doped metal-carbon composites, silver, melamine-formaldehyde polymer, carbonization, bimetallic catalysts, electrocatalytic hydrogenation, p-nitroaniline
Казахстаника
0/0 Свободно
KAIRBEKOV ZH. K.
OBTAINING FUEL PRODUCTS BY COMBINED HYDROGENATION OF COAL AND SHALE
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
JALMAKHANBETOVA R. I.
ISOLATION AND IN SILICO SARS-COV-2 MAIN PROTEASE INHIBITION POTENTIAL OF CHRYSOERIOL FROM CHONDRILLA BREVIROSTRIS FISCH. & C.A. MEY
периодические издания(Журналы)
0/0 Свободно
YUMINOVA A. A.
PHYSICAL-CHEMICAL PROPERTIES OF FM-1 REAGENT AS A POTENTIAL COLLECTOR FOR ION FLOTATION OF LANTHANOIDS
периодические издания(Журналы)
0/0 Свободно
SHLYAPOV R. M.
THERMODYNAMICS OF CHALCOCITE DISSOLVING IN SOLUTIONS OF FLOTATION REAGENTS
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
SAGYNDIKOV M. S.
ASSESSING POLYACRYLAMIDE SOLUTION CHEMICAL STABILITY DURING A POLYMER FLOOD IN THE KALAMKAS FIELD, WESTERN KAZAKHSTAN
периодические издания(Журналы)
0/0 Свободно
BURKEYEVА G. K.
"COLD CURING" OF POLYETHYLENE GLYCOL MALEATE WITH ACRYLIC ACID AND SOME PHYSICOCHEMICAL PROPERTIES OF THEIR SOLUTIONS
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
VISSURKHANOVA YA. A.
MONO- AND BIMETALLIC SILVER-CONTAINING NITROGEN-DOPED CARBON COMPOSITES AND THEIR ELECTROCATALYTIC ACTIVITY
периодические издания(Журналы)
0/0 Свободно