Zobrazeno 1 - 10
of 36
pro vyhledávání: '"Yu. A. Savel'ev"'
Publikováno v:
Сельскохозяйственные машины и технологии, Vol 12, Iss 1, Pp 42-47 (2018)
Soil-climatic conditions of arid regions of Russia have a great potential for obtaining high yields of various crops, but the constant lack of soil moisture hampers the increase in production volumes. However, the deficiency of soil moisture is due n
Externí odkaz:
https://doaj.org/article/3ef6d01b87304558a0200cfdf0de8120
Publikováno v:
Сельскохозяйственные машины и технологии, Vol 0, Iss 1, Pp 23-28 (2017)
Nearly a half of all grain production in the Russian Federation is grown in dry regions. But crop production efficiency there depends on amount of moisture, available to plants. However deficit of soil moisture is caused not only by a lack of an atmo
Externí odkaz:
https://doaj.org/article/5d332de6a795450ea2d936212888e1f3
Publikováno v:
Russian Journal of Applied Chemistry. 94:437-441
The effect of cationic and anionic impurities on the varistor properties of high-voltage ZnO ceramics with a ZnO content of 75 wt % and a weight ratio of oxides of alloying elements Bi2O3:Sb2O3:Al2O3:Co3O4:NiO = 1.00 : 0.45 : 0.80 : 0.65 : 0.53 has b
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::035466c71d2ea623c976c854159fe959
https://doi.org/10.1134/s1070427221040029
https://doi.org/10.1134/s1070427221040029
Publikováno v:
Russian Journal of Applied Chemistry. 92:1232-1238
Studies were carried out to reduce the leakage current of high-voltage ZnO varistor ceramics by varying Sb2O3 and NiO content in a ZnO-Bi2O3-Sb2O3-Al2O3-Co3O4-NiO. It was found that the ceramic composition (wt %): ZnO 80, Bi2O3 5.83, Sb2O3 2.62, A12O
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d90bfce002bd60077d0d59fb7753f0e6
https://doi.org/10.1134/s1070427219090076
https://doi.org/10.1134/s1070427219090076
Publikováno v:
Inorganic Materials. 55:405-408
This paper presents a study aimed at determining the weight ratio of oxide additives for obtaining high-voltage ceramics in the ZnO–Bi2O3–Sb2O3–Al2O3–Co3O4 system containing 90 wt % ZnO, with a leakage current density under 1 μA/cm2. The cer
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8d01a26f862e02a03d71004bcd4fde07
https://doi.org/10.1134/s0020168519030154
https://doi.org/10.1134/s0020168519030154
Publikováno v:
Inorganic Materials. 53:536-539
This paper presents a study aimed at optimizing the composition and sintering conditions of highvoltage ZnO varistor ceramics. We demonstrate that, with allowance for the cost of starting materials, the optimal composition of high-voltage ZnO varisto
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::caf58c0f8beab90358badc822c4ef98b
https://doi.org/10.1134/s0020168517050089
https://doi.org/10.1134/s0020168517050089
Publikováno v:
Russian Journal of Applied Chemistry. 90:1293-1295
Varistor powders were synthesized by accelerated combustion of an aqueous solution of hydrated zinc, bismuth, aluminum, cobalt, and nickel nitrates, antimony tartrate, and sugar at 500°С with isothermal heating for 10 min, followed by grinding and
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d7994309552420ab20a1bbbf3a910f87
https://doi.org/10.1134/s107042721708016x
https://doi.org/10.1134/s107042721708016x
Autor:
V. V. Kolobov, E. L. Tikhomirova, E. P. Lokshin, Yu. A. Savel’ev, Kalinnikov Vladimir T, A. N. Danilin, O. G. Gromov
Publikováno v:
Inorganic Materials. 51:516-519
We have examined the effect of dopant concentration on the properties of ZnO varistor ceramics and determined the composition and conditions of the synthesis of ceramic powders and sintering of ceramics at a temperature of 925°C. We obtained a break
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f50a51ebf98e912f436cd0dcc7e23ca9
https://doi.org/10.1134/s0020168515050040
https://doi.org/10.1134/s0020168515050040
Autor:
Yu. A. Savel’ev, O. G. Gromov, Kalinnikov Vladimir T, G. B. Kunshina, S. A. Mastyugin, E. P. Lokshin
Publikováno v:
Russian Journal of Applied Chemistry. 86:807-810
The decomposition of silver selenide and sulfide to metallic silver and chalcogen containing oxygen compounds by sintering with an equimolar mixture of sodium nitrate and nitrite was examined. It was found that 100% recovery of silver in a metal phas
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::090600c93313e2f4cdf8dc725228d46c
https://doi.org/10.1134/s1070427213060037
https://doi.org/10.1134/s1070427213060037
Autor:
G. B. Kunshina, Kalinnikov Vladimir T, Yu. A. Savel’ev, O. G. Gromov, E. I. Gorokhova, E. P. Lokshin
Publikováno v:
Russian Journal of Applied Chemistry. 86:278-281
The synthesis of ZnO:Ga(0.075 wt%) nanosized powders via combustion reaction at 145°C and subsequent calcination of the ground combustion product at 500–900°C was studied. Zinc and gallium nitrates were used as initial substances, and sucrose, as
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5d46f294bf75c60f4239ea9102460f2b
https://doi.org/10.1134/s1070427213020249
https://doi.org/10.1134/s1070427213020249