Electronic catalog
Genre:Естественные науки (natural_sciences)
catalogue:Articles
Search result:
3861-3870 of 4647
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 // Қарағанды университетінің хабаршысы. Химия сериясы. - 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)
MULDAKHMETOV Z. M.
Muldakhmetov, Z. M. Obtaining Carbon Sorbent from “Euromet” LLP Coke Breeze [Text] / Z. M. Muldakhmetov, A. T. Ordabaeva , M. G. Meiramov [et al.] // Қарағанды университетінің хабаршысы. Химия сериясы. - 2022. - № 2. - Р. 115-124. - Bibliogr.: p. 122-123 ISSN 2518-718Х.
UDC:
661.183
Subject headings
- Adsorbents
Annotation
The paper presents the results of a physicochemical analysis of a coke sample from “Euromet” LLP (Karaganda, Kazakhstan), which is carbonaceous material with high carbon content, the absence of volatiles matter and low ash content
Keywords
coke breeze, coals, sorbent, sorption capacity, ash content, bulk density
Kazakhstan
0/0 Free
periodical press (Magazines)
NURDILLAYEVA R. N.
Nurdillayeva, R. N. Electrochemical Method of Lead (II) Ions Removal from Wastewater Using Granular Graphite Electrodes [Text] / R. N. Nurdillayeva, A. N. Zhylysbayeva , A. K. Askarov [et al.] // Қарағанды университетінің хабаршысы. Химия сериясы. - 2022. - № 2. - Р. 61-68. - Bibliogr.: p. 66 ISSN 2518-718Х.
UDC:
544.4
Subject headings
- Chemical kinetics. Catalysis
Annotation
The article presents an electrochemical method of wastewater treatment from Pb (II) ions through granular graphite electrodes
Keywords
lead ions, granular graphite electrodes, wastewater, heavy metals, flow mode, current density
Kazakhstan
0/0 Free
periodical press (Magazines)
TURDYBEKOV K. M.
Turdybekov, K. M. Isolation and Structure of the New Sesquiterpene Lactone 3-oxo-10β-hydroxy-5,7α(H),4,6β(H)-guai-1,11(13)-diene-6,12-olide [Text] / K. M. Turdybekov, S. A. Ivasenko , D. M. Turdybekov [et al.] // Қарағанды университетінің хабаршысы. Химия сериясы. - 2022. - № 2. - Р. 52-58. - Bibliogr.: p. 57-58 ISSN 2518-718Х.
UDC:
547
Subject headings
- Оrganic chemistry
Annotation
The article presents the results of a chemical study of Tanacetopsis pjataevae, which is an endemic plant in Kazakhstan
Keywords
NMR spectroscopy, IR spectroscopy, mass spectrometry, X-ray analysis, sesquiterpene lactones, Tanacetopsis pjataevae
Kazakhstan
0/0 Free
periodical press (Magazines)
KURMANOVA A. F.
Kurmanova, A. F. DFT Study of Complexation Reactions Involving Dicarboxylic Acids: Hydrogen Bonds, Influence of Solvent Nature [Text] / A. F. Kurmanova, F. Zh. Abilkanova , A. S. Rakhimzhanova [et al.] // Қарағанды университетінің хабаршысы. Химия сериясы. - 2022. - № 2. - Р. 43-51. - Bibliogr.: p. 49-50 ISSN 2518-718Х.
UDC:
541.515
Subject headings
- Free radicals
Annotation
Quantum chemical studies of the protolytic ability of some dicarboxylic acids are carried out. The geometric and kinetic parameters of the dimeric molecules of maleic, succinic, tartaric, oxalic, and adipic acids are investigated
Keywords
quantum chemical calculations, density functional theory, hydrogen bond, intermolecular hydrogen bonds, dimerization energy, complexation energy, effect of the nature of the solvent
Kazakhstan
0/0 Free
periodical press (Magazines)
MEDVEDEVA N. A.
Medvedeva, N. A. The Effect of Aging on the Microstructure of Alloys (ТiСr1.8)100–xVx after Electrolytic Hydrogen Charging [Text] / N. A. Medvedeva, A. A. Mironova , N. E. Skryabina [et al.] // Қарағанды университетінің хабаршысы. Химия сериясы. - 2022. - № 2. - Р. 95-102. - Bibliogr.: p. 99 ISSN 2518-718Х.
UDC:
544.2
Subject headings
- Physical chemistry of solids, liquids and gases
Annotation
The microstructure transformation of ternary Ti-Cr-V alloys after introduction of hydrogen has been analyzed for a long time. Assessment of the impact of vanadium concentration and ratio of Ti and V concentrations on composition stability has been carried out
Keywords
alloys, electrochemical hydrogen saturation, hydrogen, self-diffusion, microstructure of alloys
Kazakhstan
0/0 Free
periodical press (Magazines)
RYABYKH A. V.
Ryabykh, A. V. The Role of Zinc Ion in the Active Site of Copper-Zinc Superoxide Dismutase [Text] / A. V. Ryabykh, O. A. Maslova , S. A. Beznosyuk [et al.] // Қарағанды университетінің хабаршысы. Химия сериясы. - 2022. - № 2. - Р. 77-87. - Bibliogr.: p. 85 ISSN 2518-718Х.
UDC:
544.18
Subject headings
- Quantum chemistry
Annotation
The interaction of the superoxide radical ion O2– with the active center of Cu, Zn superoxide dismutase was studied obtained by computer simulation
Keywords
Zn-superoxide dismutase, superoxide radical ion, reactive oxygen species, antioxidants
Kazakhstan
0/0 Free
periodical press (Magazines)
STADNIK I. L.
Stadnik, I. L. ESR-Study of the Proton Exchange with Aliphatic Amino Acids in Toluene [Text] / I. L. Stadnik, F. Zh. Abilkanova , Ye. V. Kudryavtseva [et al.] // Қарағанды университетінің хабаршысы. Химия сериясы. - 2022. - № 2. - Р. 69-76. - Bibliogr.: p. 75-76 ISSN 2518-718Х.
UDC:
54
Subject headings
- Chemistry
Annotation
This paper presents the results of an ESR spectroscopic study of the intermolecular proton exchange kinetics with some isomers of aminocaproic acid, such as 2-aminohexanoic and 6-aminohexanoic acids in the toluene indifferent medium
Keywords
proton exchange reactions, ESR-spectroscopy, spin probe, semiquinone radical, Bloch equation, aminohexanoic acid
Kazakhstan
0/0 Free
periodical press (Magazines)
CHITLANGE S. S.
Chitlange, S. S. Development and Validation of HPTLC Method for Simultaneous Estimation of Berberine, Gallic Acid and Ursolic Acid in a Polyherbal Blend [Text] / S. S. Chitlange, S. R. Chandani , S. P. Gandhi [et al.] // Қарағанды университетінің хабаршысы. Химия сериясы. - 2022. - № 2. - Р. 33-42. - Bibliogr.: p. 39-41 ISSN 2518-718Х.
UDC:
54
Subject headings
- Chemistry
Keywords
polyherbal, gallic acid, berberine, ursolic acid, method development, validation
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.] // Қарағанды университетінің хабаршысы. Химия сериясы. - 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
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
periodical press (Magazines)
0/0 Free
NURDILLAYEVA R. N.
ELECTROCHEMICAL METHOD OF LEAD (II) IONS REMOVAL FROM WASTEWATER USING GRANULAR GRAPHITE ELECTRODES
periodical press (Magazines)
0/0 Free
TURDYBEKOV K. M.
ISOLATION AND STRUCTURE OF THE NEW SESQUITERPENE LACTONE 3-OXO-10Β-HYDROXY-5,7Α(H),4,6Β(H)-GUAI-1,11(13)-DIENE-6,12-OLIDE
periodical press (Magazines)
0/0 Free
KURMANOVA A. F.
DFT STUDY OF COMPLEXATION REACTIONS INVOLVING DICARBOXYLIC ACIDS: HYDROGEN BONDS, INFLUENCE OF SOLVENT NATURE
periodical press (Magazines)
0/0 Free
MEDVEDEVA N. A.
THE EFFECT OF AGING ON THE MICROSTRUCTURE OF ALLOYS (ТIСR1.8)100–XVX AFTER ELECTROLYTIC HYDROGEN CHARGING
periodical press (Magazines)
0/0 Free
RYABYKH A. V.
THE ROLE OF ZINC ION IN THE ACTIVE SITE OF COPPER-ZINC SUPEROXIDE DISMUTASE
periodical press (Magazines)
0/0 Free
STADNIK I. L.
ESR-STUDY OF THE PROTON EXCHANGE WITH ALIPHATIC AMINO ACIDS IN TOLUENE
periodical press (Magazines)
0/0 Free
CHITLANGE S. S.
DEVELOPMENT AND VALIDATION OF HPTLC METHOD FOR SIMULTANEOUS ESTIMATION OF BERBERINE, GALLIC ACID AND URSOLIC ACID IN A POLYHERBAL BLEND
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