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4(96)/2019-Химия
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Посмотр 4(96)/2019-Химия по дате публикации

Посмотр 4(96)/2019-Химия по дате публикации

Отображаемые элементы 1-15 из 15

Polymerization of lactic acid oligomers under microwave irradiation

Guba, G.Ya.; Gusar, A.O.; Mamaeva, E.A.; Popova, V.А.; Dolgov, I.R.; Bakibayev, A.A.; Ahmedjanov, R.R. (KSU publ., 2019-10-30)

The kinetics of the polymerization of lactic acid oligomers (LAO) was studied for the first time at various microwave irradiation powers (MW) in the presence of Sn(Oct)2/benzyl alcohol (C6H5CH2OH) catalyst and toluenesulfonic ...
Physico-chemical investigation of stone coals of «Karazhyra» field

Dinzhumanova, R.T.; Bayakhmetova, B.B.; Kassenova, N.B.; Klivenko, A.N. (KSU publ., 2019-10-30)

Results of physico-chemical research of stone coals from the Karazhyra field presents in this work. The following technical indicators of coals were studied: moisture, ash, yield of volatile component, sulfur content, elemental ...
Kinetics of silver dissolution in aqueous solutions of hydrochloric acid

Tuleshova, E. Zh.; Bayeshov, A.B.; Aibolova, G.K. (KSU publ., 2019-10-30)

In this article results of the kinetic regularities of the processes of electrochemical oxidation-reduction of silver in a solution of hydrochloric acid by the recorded potentiodynamic polarization curves method were ...
Mass balance calculations of processes of ammonia saltpeter thermal decomposition and nitric acid absorption of ammonia

Besterekov, U.; Kydyralieva, A.D.; Petropavlovskiy, I.A.; Yeskendirova, M.M.; Urakov, K.N.; Pochitalkina, I.A.; Bolysbek, A.A. (KSU publ., 2019-10-30)

The ability of ammonia saltpeter to decompose at elevated temperatures causes a rather serious concern both its manufacturers and its consumers as for this reason the ammonia saltpeter quality and value meet the modern market ...
Synthesizing copper phosphide in interacting of elemental phosphorus with copper (II) oxide in aqueous solutions

Sarsembayev, B.Sh.; Ibishev, K.S.; Dospayev, М.М. (KSU publ., 2019-10-30)

The article deals with a possibility of the copper phosphide synthesis by interaction of copper (II) oxide and elemental phosphorus in the water solutions. The method of multifactorial experiment planning was used for more ...
Development of the synthesis technology of S@AgCl−Ag2S nanocomposite in aqua medium

Khan, N.V.; Burkitbayev, M.M.; Urakaev, F. Kh. (KSU publ., 2019-10-30)

This research work is devoted to the development of the synthesis technology of nanocomposite based on sulfur, silver chloride and silver sulfide. The components which included in this nanocomposite make it possible to use ...
Polysulfone as a material for advanced electrical batteries

Shambilova, G.K.; Gumennyi, I.V.; Govorov, V.A.; Malkin, A.Ya.; Makhatova, V.E.; Naukenov, M.Zh. (KSU publ., 2019-10-30)

The materials based on polysyphone are used for polymer electrolite production. The rheological properties were measured for three component system polysulphone – solvent – propylene carbonate. The varying factor was ...
Chemical composition and properties of essential oil of Ferula foetida (Bunge) Regel growing on Mangyshlak peninsula

Sagyndykova, M.S.; Imanbayeva, A.A.; Suleimen, Ye.M.; Ishmuratova, M.Yu. (KSU publ., 2019-10-30)

The medicinal plant, Ferula foetida, has been studied, which has a wide range of pharmacological properties. Since ancient times, ferules have been used in folk medicine in various countries (Central Asia, Iran, China, India) ...
Obtaining of lead (II) sulfate by polarization of bipolar lead electrodes with alternating current

Bayeshova, A.K.; Kongyratbay, A.M.; Zhumabay, F.M.; Bayeshov, A.; Leska, B. (KSU publ., 2019-10-30)

The process of electrolysis using bipolar lead electrodesat polarization by alternating current of industrial frequency (50 Hz) in sulfuric acid solutions was studied for the first time. It is shown that the oxidation of ...
Swelling and mechanical properties of quenched polyampholyte hydrogels based on 2-acrylamido-2-methyl-1-propanesulfonic acid sodium salt (AMPS) and (3-acrylamidopropyl) trimethylammonium chloride (APTAC)

Toleutay, G.; Su, E.; Kudaibergenov, S.E. (KSU publ., 2019-10-30)

In our previous paper (Bulletin of the Karaganda University. Chemistry series, 2019, 2(94), P. 35–43) we considered the behavior of quenched (or strongly charged) polyampholytes based on fully charged anionic monomer — ...
Effect of catalytic systems on the hydrogenation of phenanthrene

Aitbekova, D.E.; Su, Xintai; Ma, Fengyung; Tusipkhan, A.; Baikenov, M.I. (KSU publ., 2019-10-30)

This paper shows the effectiveness of the synthesized catalytic additives in the process of hydrogenation of phenanthrene in the presence of ethanol as a hydrogen donor. Ferrosphere, NiO/SiO2 covered the surface of ferrosphere ...
Levels of heavy metals in the «soil – medicinal plants» system in relation to the geographical location and ecological and genetic zone of the Irtysh river floodplain

Popp, Ya.I.; Bokova, T.I.; Issabayev, Ye.A. (KSU publ., 2019-10-30)

The article provides the material on the levels of zinc, copper, and cadmium in the «soil-medicinal plants» system in relation to the territorial location and ecological and genetic zonality of the Irtysh river floodplain. The ...
Amidation of amino ethylene-1,2-dicarboxylic acid diesters: a theoretical consideration

Lebed, О.S.; Chertikhina, Yu.А.; Mutaliyeva, B.Zh.; Kudasova, D.Е.; Prosyanik, А.V. (KSU publ., 2019-10-30)

The amidation features of the Z- and E-isomers of amynoethylene-1,2-dicarboxylic acid diesters MeO2CCN=C(NRR1)CO2Me, where R = Н; R1 = H, Me, t-Bu; R = R1 = Me, have been considered based on the data of quantum chemical ...
Engineering Educators Training in Kazakhstan: Situation and Prospects

Sugralina, L.M.; Minayeva, Ye.V.; Karstina, S.G.; Salkeeva, L.K. (KSU publ., 2019-10-30)

The article is a brief overview for the current state of engineering education in Kazakhstan and considers the prospects for its further development and implementation, which is due to the need for industrial and ...
About development of a new method of processing of low-quality phosphate raw materials

Dzhanmuldaeva, Zh.K.; Yakubova, R.R.; Seitmagzimova, G.M.; Tleuova, S.T. (KSU publ., 2019-10-30)

Kazakhstan has huge reserves of phosphate raw materials. Nowadays high-grade phosphates are almost exhausted, and the ore is mainly represented by run-of-mine and low-grade phosphorites with small phosphorus content. ...

Посмотр 4(96)/2019-Химия по дате публикации

Посмотр 4(96)/2019-Химия по дате публикации

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