Zobrazeno 1 - 10
of 92
pro vyhledávání: '"Vladimir Koval"'
Publikováno v:
Journal of Advanced Ceramics, Vol 12, Iss 7, Pp 1331-1344 (2023)
The sodium (Na) and Ce co-doped calcium bismuth titanate (CBT; CaBi4Ti4O15) Aurivillius ceramics in a Ca1−x(Na0.5Ce0.5)xBi4Ti4O15 (CNCBT; doping content (x) = 0, 0.03, 0.05, 0.08 and 0.12) system were synthesized by the conventional solid-state sin
Externí odkaz:
https://doaj.org/article/907abf6bc71f4fd5a957e9efaccf92fb
Publikováno v:
International Journal of Plant Biology, Vol 14, Iss 1, Pp 286-298 (2023)
The morphostructure of inflorescences in the genus Coelogyne Lindl. was studied for the first time using a structural–rhythmological approach. Three species of Coelogyne were used to describe one-season, intercalary, and all-season inflorescences.
Externí odkaz:
https://doaj.org/article/e03365910d1c4ef6841147f553ec6003
Publikováno v:
International Journal of Plant Biology, Vol 14, Iss 1, Pp 190-198 (2023)
Understanding the critical stages in ovule development is essential for optimizing in vitro seed propagation, cryopreservation, and indirect somatic plant embryogenesis. We studied the main stages of the megasporogenesis and megagametogenesis of Coel
Externí odkaz:
https://doaj.org/article/e9a155dd19994b578a4a7402fcbb5c86
Autor:
Pengtao Li, Y.Q. Yang, Vladimir Koval, Jianxin Chen, Xian Luo, Wen Zhang, Bowen Wang, Haixue Yan
Publikováno v:
Materials & Design, Vol 199, Iss , Pp 109422- (2021)
Although deformation processes in single-phase nano-polycrystalline alloys at different temperatures are well described, the deformation mechanism in two-phase nano-polycrystalline alloys at different temperatures is still unclear. Here, the deformat
Externí odkaz:
https://doaj.org/article/a3b7702db39d4ee19862e583f171da7c
Perovskite Bi0.5Na0.5TiO3-based materials for dielectric capacitors with ultrahigh thermal stability
Autor:
Jiyue Wu, Hangfeng Zhang, Nan Meng, Vladimir Koval, Amit Mahajan, Zhipeng Gao, Dou Zhang, Haixue Yan
Publikováno v:
Materials & Design, Vol 198, Iss , Pp 109344- (2021)
There has been recently a great progress in the development of dielectric capacitors for high temperature electronic applications. The design of lead-free ceramics with high dielectric permittivity, low dielectric loss and a limited variation of thes
Externí odkaz:
https://doaj.org/article/bb061ac99aee4601b68611a33f9b705e
Autor:
Jiyue Wu, Wenfeng Sun, Nan Meng, Hangfeng Zhang, Vladimir Koval, Yan Zhang, Robert Donnan, Bin Yang, Dou Zhang, Haixue Yan
Publikováno v:
Advanced Electronic Materials, Vol 6, Iss 4, Pp n/a-n/a (2020)
Abstract Electric‐field‐induced phase transitions in Bi0.5Na0.5TiO3‐based relaxor ferroelectrics are essential to the control of their electrical properties and consequently in revolutionizing their dielectric and piezoelectric applications. Ho
Externí odkaz:
https://doaj.org/article/3ef5c7190ea843b6820ec75cea08a169
Publikováno v:
New Journal of Physics, Vol 22, Iss 1, p 013046 (2020)
We report on the dynamics of a Bose–Einstein condensate in one and two dimensions driven by the time-dependent harmonic trapping potential. Without the inter-particle interaction, the condensate exhibits the coherent behavior with the time-oscillat
Externí odkaz:
https://doaj.org/article/71beb3fcb7bf48c0a4ddb212477a2187
Autor:
Alexandra Golyeva, Olga Khokhlova, Asia Engovatova, Vladimir Koval, Anna Aleshinskaya, Maria Kochanova, Aleksandr Makeev, Tatiana Puzanova, Fatima Kurbanova
Publikováno v:
Geosciences, Vol 8, Iss 12, p 447 (2018)
Combined archaeological and pedogenetic study allows reconstructing the history of early habitation in Moscow Kremlin (Moscow, Russia). The area is confined to the third terrace of Moskva River with Podzols as native soils formed in fluvioglacial san
Externí odkaz:
https://doaj.org/article/1c8d241935a043f39391d89ab8699cd5
Publikováno v:
Journal of the European Ceramic Society. 43:2460-2468
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::95e76bba682c0da2266b8ecf4a1137d1
https://doi.org/10.1016/j.jeurceramsoc.2023.01.034
https://doi.org/10.1016/j.jeurceramsoc.2023.01.034
Autor:
Man Zhang, Vladimir Koval, Yu Shi, Yajun Yue, Chenglong Jia, Jiagang Wu, Giuseppe Viola, Haixue Yan
Publikováno v:
Journal of Materials Science & Technology. 137:100-103
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b7cc530912e30c74070cfaf3c6404936
https://doi.org/10.1016/j.jmst.2022.07.040
https://doi.org/10.1016/j.jmst.2022.07.040