Электронный каталог
Жанр:Естественные науки (natural_sciences)
Результат поиска:
19311-19320 из 22529
периодические издания(Журналы)
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.
УДК:
661.183
Предметная рубрика
- Adsorbents
Аннотация
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
Ключевые слова
coke breeze, coals, sorbent, sorption capacity, ash content, bulk density
Казахстаника
0/0 Свободно
периодические издания(Журналы)
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.
УДК:
544.4
Предметная рубрика
- Chemical kinetics. Catalysis
Аннотация
The article presents an electrochemical method of wastewater treatment from Pb (II) ions through granular graphite electrodes
Ключевые слова
lead ions, granular graphite electrodes, wastewater, heavy metals, flow mode, current density
Казахстаника
0/0 Свободно
периодические издания(Журналы)
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.
УДК:
547
Предметная рубрика
- Оrganic chemistry
Аннотация
The article presents the results of a chemical study of Tanacetopsis pjataevae, which is an endemic plant in Kazakhstan
Ключевые слова
NMR spectroscopy, IR spectroscopy, mass spectrometry, X-ray analysis, sesquiterpene lactones, Tanacetopsis pjataevae
Казахстаника
0/0 Свободно
периодические издания(Журналы)
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.
УДК:
541.515
Предметная рубрика
- Free radicals
Аннотация
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
Ключевые слова
quantum chemical calculations, density functional theory, hydrogen bond, intermolecular hydrogen bonds, dimerization energy, complexation energy, effect of the nature of the solvent
Казахстаника
0/0 Свободно
периодические издания(Журналы)
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.
УДК:
544.2
Предметная рубрика
- Physical chemistry of solids, liquids and gases
Аннотация
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
Ключевые слова
alloys, electrochemical hydrogen saturation, hydrogen, self-diffusion, microstructure of alloys
Казахстаника
0/0 Свободно
периодические издания(Журналы)
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.
УДК:
544.18
Предметная рубрика
- Quantum chemistry
Аннотация
The interaction of the superoxide radical ion O2– with the active center of Cu, Zn superoxide dismutase was studied obtained by computer simulation
Ключевые слова
Zn-superoxide dismutase, superoxide radical ion, reactive oxygen species, antioxidants
Казахстаника
0/0 Свободно
периодические издания(Журналы)
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.
УДК:
54
Предметная рубрика
- Chemistry
Аннотация
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
Ключевые слова
proton exchange reactions, ESR-spectroscopy, spin probe, semiquinone radical, Bloch equation, aminohexanoic acid
Казахстаника
0/0 Свободно
периодические издания(Журналы)
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.
УДК:
54
Предметная рубрика
- Chemistry
Ключевые слова
polyherbal, gallic acid, berberine, ursolic acid, method development, validation
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.] // Қарағанды университетінің хабаршысы. Химия сериясы. - 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.] // 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, triazoles, terminal alkynes, 1,3- dipolar cycloaddition reaction, X-ray structural analysis, azides, methanesulfonyl chloride
Казахстаника
0/0 Свободно
MULDAKHMETOV Z. M.
OBTAINING CARBON SORBENT FROM “EUROMET” LLP COKE BREEZE
периодические издания(Журналы)
0/0 Свободно
NURDILLAYEVA R. N.
ELECTROCHEMICAL METHOD OF LEAD (II) IONS REMOVAL FROM WASTEWATER USING GRANULAR GRAPHITE ELECTRODES
периодические издания(Журналы)
0/0 Свободно
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
периодические издания(Журналы)
0/0 Свободно
KURMANOVA A. F.
DFT STUDY OF COMPLEXATION REACTIONS INVOLVING DICARBOXYLIC ACIDS: HYDROGEN BONDS, INFLUENCE OF SOLVENT NATURE
периодические издания(Журналы)
0/0 Свободно
MEDVEDEVA N. A.
THE EFFECT OF AGING ON THE MICROSTRUCTURE OF ALLOYS (ТIСR1.8)100–XVX AFTER ELECTROLYTIC HYDROGEN CHARGING
периодические издания(Журналы)
0/0 Свободно
RYABYKH A. V.
THE ROLE OF ZINC ION IN THE ACTIVE SITE OF COPPER-ZINC SUPEROXIDE DISMUTASE
периодические издания(Журналы)
0/0 Свободно
STADNIK I. L.
ESR-STUDY OF THE PROTON EXCHANGE WITH ALIPHATIC AMINO ACIDS IN TOLUENE
периодические издания(Журналы)
0/0 Свободно
CHITLANGE S. S.
DEVELOPMENT AND VALIDATION OF HPTLC METHOD FOR SIMULTANEOUS ESTIMATION OF BERBERINE, GALLIC ACID AND URSOLIC ACID IN A POLYHERBAL BLEND
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