Electronic catalog
language:English
catalogue:Articles
Search result:
831-840 of 955
periodical press (Magazines)
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.
UDC:
662.74
Subject headings
- Coal technology. Coke production
Annotation
This article is devoted to the study of the process of obtaining fuel products of co-hydrogenation of coal and shale
Keywords
coal, shale, thermocatalytic processing, hydrogenation, hydrogenation, product yield, gasoline fraction, diesel fraction
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)
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.
UDC:
547.972
Subject headings
- Natural xanthonic, flavone and flavonol dyes
Annotation
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
Keywords
сhondrilla brevirostris, аsteraceae, extraction, column chromatography, flavonoid, spectroscopy, molecular docking study
Kazakhstan
0/0 Free
periodical press (Magazines)
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.
UDC:
543.63
Subject headings
- Organic matter analysis
Annotation
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
Keywords
ion flotation, rare-earth elements, aminomethylenephosphonic acid salts, surface-active substance, lanthanum
Kazakhstan
0/0 Free
periodical press (Magazines)
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.
UDC:
543.42
Subject headings
- Spectral analysis
Annotation
This work describes the formation of the ionic composition of the sorption layer during the concentration ofcopper-lead and pyrite-copper-zinc ore
Keywords
flotation, hydrophobicity, sorption layer of collector, flotation reagents, sulfide minerals
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)
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.
UDC:
66-922
Subject headings
- Processes involving several types of molecules
Annotation
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
Keywords
polyacrylamide, polymer solution, chemical degradation, polymer flood, iron
Kazakhstan
0/0 Free
periodical press (Magazines)
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.
UDC:
541.64
Subject headings
- Chemistry of macromolecules. Products of polymerization, polycondensation and polyaddition reactions
Annotation
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
Keywords
sealant, glue, unsaturated polyester, polyethylene glycol maleate, unsaturated carboxylic acid, radical copolymerization, acrylic acid, radical copolymerization, cold curing
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)
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.
UDC:
544.478
Subject headings
- Catalysts
Annotation
The N-doped metal-carbon composites based on the carbonized melamine-formaldehyde polymer (MFP) with silver, silver-copper, and silver-cobalt particles were synthesized
Keywords
N-doped metal-carbon composites, silver, melamine-formaldehyde polymer, carbonization, bimetallic catalysts, electrocatalytic hydrogenation, p-nitroaniline
Kazakhstan
0/0 Free
KAIRBEKOV ZH. K.
OBTAINING FUEL PRODUCTS BY COMBINED HYDROGENATION OF COAL AND SHALE
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
JALMAKHANBETOVA R. I.
ISOLATION AND IN SILICO SARS-COV-2 MAIN PROTEASE INHIBITION POTENTIAL OF CHRYSOERIOL FROM CHONDRILLA BREVIROSTRIS FISCH. & C.A. MEY
periodical press (Magazines)
0/0 Free
YUMINOVA A. A.
PHYSICAL-CHEMICAL PROPERTIES OF FM-1 REAGENT AS A POTENTIAL COLLECTOR FOR ION FLOTATION OF LANTHANOIDS
periodical press (Magazines)
0/0 Free
SHLYAPOV R. M.
THERMODYNAMICS OF CHALCOCITE DISSOLVING IN SOLUTIONS OF FLOTATION REAGENTS
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
SAGYNDIKOV M. S.
ASSESSING POLYACRYLAMIDE SOLUTION CHEMICAL STABILITY DURING A POLYMER FLOOD IN THE KALAMKAS FIELD, WESTERN KAZAKHSTAN
periodical press (Magazines)
0/0 Free
BURKEYEVА G. K.
"COLD CURING" OF POLYETHYLENE GLYCOL MALEATE WITH ACRYLIC ACID AND SOME PHYSICOCHEMICAL PROPERTIES OF THEIR SOLUTIONS
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
VISSURKHANOVA YA. A.
MONO- AND BIMETALLIC SILVER-CONTAINING NITROGEN-DOPED CARBON COMPOSITES AND THEIR ELECTROCATALYTIC ACTIVITY
periodical press (Magazines)
0/0 Free