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Genre:Естественные науки (natural_sciences)
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281-290 of 308
periodical press (Magazines)
VDOVINA T. A.
Vdovina, T. A. To the methodology for the study of intraspecific variability and selection of wild forms of Viburnum opulus L. [Text] / T. A. Vdovina, O. A. Lagus // Қарағанды университетінің хабаршысы. Биология. Медицина. География сериясы. - 2023. - № 4 (112). - P. 126-133. - Bibliogr.: p. 131 ISSN 2518-7201.
UDC:
581:634.745
Subject headings
- Botany. Viburnum opulus L.
Annotation
The methodological recommendation for the study of intraspecific variability and the selection of wildgrowing promising for breeding forms of common Viburnumis written on the basis of a large amount of factual material obtained from the study of this species in the East Kazakhstan region
Keywords
distribution, quantitative characteristics, degree of flowering , fruits, variability
Kazakhstan
0/0 Free
periodical press (Magazines)
ONORKULOV K.
Onorkulov, K. Technology for obtaining anomalous photovoltaic effect films from cadmium halides and on the nature of Microphotocells [Text] / K. Onorkulov, A. Zokirov // Bulletin of the L.N. Gumilyov Eurasian National University. Physics. Astronomy Series. - 2023. - № 2. - Р. 16-23. - Bibliogr.: р. 20-21 ISSN 2616-6836.
UDC:
53
Subject headings
- Рhysics
Annotation
This article discusses the technology of obtaining anomalous photovoltaic (APV) effect films from cadmium halides
Keywords
anomalous photovoltaic effect, cadmium halides, film deposition, stoichiometry, dispersion evaporation, еxplosive evaporation, acoustic faraday effect, selenium films
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)
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.] // Bulletin of the Karaganda University. Chemistry Series. - 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.] // Bulletin of the Karaganda University. Chemistry Series. - 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)
DEBERDEEV T. R.
Deberdeev, T. R. Thermal Behavior of Novel Aromatic Oligoesters and Oligoesteramides [Text] / T. R. Deberdeev, A. I. Akhmetshina , L. K. Karimova [et al.] // Bulletin of the Karaganda University. Chemistry series. - 2022. - № 3. - Р. 180-188. - Bibliogr.: p. 188 ISSN 2518-718Х.
UDC:
541.64
Subject headings
- Chemistry of macromolecules. Products of polymerization, polycondensation and polyaddition reactions
Annotation
Series of aromatic oligoesters and oligoesteramides were synthesized via high-temperature polycondensation of aromatic dicarboxylic acids with 4-hydroxybenzoic acid (or 4-aminobenzoic acid) and 1,5-naphthalene diol
Keywords
liquid crystalline polymers, phase transitions, polarizing microscopy, thermal stability, high-temperature polycondensation
Kazakhstan
0/0 Free
periodical press (Magazines)
WU C. Y.
Wu, C. Y. Three-Dimensional Fingerprint Spectroscopy Study on the Biopolymer System of Polyphenol Oxidase Binding with Cumalic Acid [Text] / C. Y. Wu, W. О. Ling , Y. C. Yao [et al.] // Bulletin of the Karaganda University. Chemistry series. - 2022. - № 3. - Р. 168-179. - Bibliogr.: p. 176-177 ISSN 2518-718Х.
UDC:
544.4
Subject headings
- Chemical kinetics. Catalysis
Annotation
This study examines the interaction of coumaric acid with polyphenol oxidase, an enzyme that plays a key role in the aging and darkening of plant cells
Keywords
biopolymer, Cu-containing enzyme, coumaric acid, polyphenol oxidase, antioxidant, antioxidant, spectroscopy, tyrosinase, molecular modeling
Kazakhstan
0/0 Free
periodical press (Magazines)
AYAZBAYEVA A. YE.
Ayazbayeva, A. Ye. Temperature and Salt Responsivity of Anionic, Cationic and Amphoteric Nanogels Based on N-Isopropylacrylamide, 2-Acrylamido-2-Methyl-1-Propanesulfonic Acid Sodium Salt and (3-Acrylamidopropyl) Trimethylammonium Chloride [Text] / A. Ye. Ayazbayeva, A. V. Shakhvorostov , S. E. Kudaibergenov // Bulletin of the Karaganda University. Chemistry Series. - 2022. - № 4. - Р. 14-24. - Bibliogr.: p. 22-23 ISSN 2518-718Х.
UDC:
541.64
Subject headings
- Chemistry of macromolecules. Products of polymerization, polycondensation and polyaddition reactions
Annotation
Three different nanogels possessing anionic, cationic and amphoteric character were synthesized via conventional redox initiated free radical copolymerization of N-isopropylacrylamide, 2-acrylamido-2-methyl-1-propanesulfonic acid sodium salt and (3-acrylamidopropyl) trimethylammonium chloride
Keywords
polyampholyte nanogels, poly-N-isopropylacrylamide, ionic monomers, volume phase transition temperature, amphoteric nanogel, cationic nanogel
Kazakhstan
0/0 Free
periodical press (Magazines)
CHEKANOVA L. G.
Chekanova, L. G. The Selection of Reagents for Ionic Flotation of Non-Ferrous Metals in the Series of N-Acyl-N'-Mezylhydrazines [Text] / L. G. Chekanova, V. N. Vaulina , Yu. B. Elchischeva [et al.] // Bulletin of the Karaganda University. Chemistry Series. - 2022. - № 4. - Р. 171-181. - Bibliogr.: p. 180-181 ISSN 2518-718Х.
UDC:
547
Subject headings
- Organic chemistry
Annotation
A series of new ligands — N-acyl-N'-mesylhydrazines — of the general formula RC(O)NHNHSO2CH3 has been obtained and considered as reagents for ionic flotation of non-ferrous metals (M(II)
Keywords
ionic flotation, precipitate flotation, sulfonylhydrazines, non-ferrous metals, physico-chemical properties, surface-active substances
Kazakhstan
0/0 Free
abstract
ZHUBANYSHEVA, AXAULE ZHANBYRSHIYEVNA
Theory and practice of realization of effective algorithms for finding the optimal coefficients in Korobov sense : abstract of the dissertation for competition of academic degree of PhD / Zhubanysheva, Axaule Zhanbyrshiyevna ... – Astana : [N. p.], 2010. - 23, [2] p. . – Bibiliogr. in footnote ; 23 p. . – 80 c. – не указан : [N. p.]
UDC:
517.968
Shelf code:
А 2010/4458
Subject headings
- Integral equations
Annotation
The research objects of the thesis are the theoretical problem of construction and the practical problem of numerical realization of algorithms for finding the optimal coefficients of quardrature formulas
Keywords
effective algorithms, optimal coefficients, numerical realization of algorithms, integral equations, mathematics, abstract
2/2 Free
VDOVINA T. A.
TO THE METHODOLOGY FOR THE STUDY OF INTRASPECIFIC VARIABILITY AND SELECTION OF WILD FORMS OF VIBURNUM OPULUS L.
periodical press (Magazines)
0/0 Free
ONORKULOV K.
TECHNOLOGY FOR OBTAINING ANOMALOUS PHOTOVOLTAIC EFFECT FILMS FROM CADMIUM HALIDES AND ON THE NATURE OF MICROPHOTOCELLS
periodical press (Magazines)
0/0 Free
SHLYAPOV R. M.
THERMODYNAMICS OF CHALCOCITE DISSOLVING IN SOLUTIONS OF FLOTATION REAGENTS
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
DEBERDEEV T. R.
THERMAL BEHAVIOR OF NOVEL AROMATIC OLIGOESTERS AND OLIGOESTERAMIDES
periodical press (Magazines)
0/0 Free
WU C. Y.
THREE-DIMENSIONAL FINGERPRINT SPECTROSCOPY STUDY ON THE BIOPOLYMER SYSTEM OF POLYPHENOL OXIDASE BINDING WITH CUMALIC ACID
periodical press (Magazines)
0/0 Free
AYAZBAYEVA A. YE.
TEMPERATURE AND SALT RESPONSIVITY OF ANIONIC, CATIONIC AND AMPHOTERIC NANOGELS BASED ON N-ISOPROPYLACRYLAMIDE, 2-ACRYLAMIDO-2-METHYL-1-PROPANESULFONIC ACID SODIUM SALT AND (3-ACRYLAMIDOPROPYL) TRIMETHYLAMMONIUM CHLORIDE
periodical press (Magazines)
0/0 Free
CHEKANOVA L. G.
THE SELECTION OF REAGENTS FOR IONIC FLOTATION OF NON-FERROUS METALS IN THE SERIES OF N-ACYL-N'-MEZYLHYDRAZINES
periodical press (Magazines)
0/0 Free
ZHUBANYSHEVA, AXAULE ZHANBYRSHIYEVNA
THEORY AND PRACTICE OF REALIZATION OF EFFECTIVE ALGORITHMS FOR FINDING THE OPTIMAL COEFFICIENTS IN KOROBOV SENSE (2010)
abstract
2/2 Free