Zobrazeno 1 - 10
of 31
pro vyhledávání: '"Andrey V. Zhuravlev"'
Publikováno v:
Geologica Acta, Vol 19, Iss 3, Pp 1-17 (2021)
Details of the Early-Middle Frasnian boundary interval of the Pymvashor River section (Timan-Pechora Basin, Cis-Urals, in the far north of European Russia) are revealed by biostratigraphically constrained carbonate (δ13Ccarb) and organic carbon (δ1
Externí odkaz:
https://doaj.org/article/333085e576a745a08a9a7ce2e3cbbf5c
Autor:
Andrey V. Zhuravlev, Irina V. Smoleva
Publikováno v:
Estonian Journal of Earth Sciences, Vol 67, Iss 4, Pp 238-246 (2018)
The δ13Corg values and their variations in conodont elements of the latest Famennian–Tournaisian species Polygnathus parapetus Druce are considered. The conodonts studied come from the latest Famennian–Tournaisian interval of the Kamenka River s
Externí odkaz:
https://doaj.org/article/dbac363b10a24c6bbf24abad0157722f
Autor:
Andrey V. Zhuravlev
Publikováno v:
Estonian Journal of Earth Sciences, Vol 66, Iss 4, Pp 188-192 (2017)
A new upper Tournaisian (Lower Carboniferous) siphonodellid conodont species Siphonodella carinata n. sp. is described. The material comes from the shallow-water carbonate sediments of the Pechora Swell (Timan-Pechora region or NE of European Russia)
Externí odkaz:
https://doaj.org/article/9128b14791464b8db96686daeba4d287
Publikováno v:
Rivista Italiana di Paleontologia e Stratigrafia, Vol 123, Iss 2 (2017)
Conodonts are an extinct group of marine animals possessing debated affinities. The conodont elements are composed of calcium phosphate [apatite (CaF)] and collagen-like proteins. Distribution of Sr in the bioapatite of albid, lamellar and paralamell
Externí odkaz:
https://doaj.org/article/e5a1301d82b5491ea634ed515eb5d481
Publikováno v:
Revista Mexicana de Ciencias Geológicas. 40:35-43
The fauna provincialism in the interval led to the appearance of some problems with the tracing of this boundary with biostratigraphic methods. Therefore, it is important to determine auxiliary non-biostratigraphic markers of the boundary. The articl
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2fd90ab2f730b334ca7fda2910d1f0ea
https://doi.org/10.22201/cgeo.20072902e.2023.1.1722
https://doi.org/10.22201/cgeo.20072902e.2023.1.1722
Publikováno v:
Palaeoworld. 31:633-645
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e8d666b726b90a91cb5f1fe271b2a6df
https://doi.org/10.1016/j.palwor.2022.01.001
https://doi.org/10.1016/j.palwor.2022.01.001
Autor:
Andrey V. Zhuravlev
Publikováno v:
Palaeoworld. 31:249-257
The early–middle Frasnian boundary interval of the northern part of the East European Platform (northwest of Russia) corresponding to the transitans-punctata isotope event is revealed by biostratigraphically constrained conodont carbon stable isoto
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::49f23ab62192e0bed8f96f43f01759a3
https://doi.org/10.1016/j.palwor.2021.07.003
https://doi.org/10.1016/j.palwor.2021.07.003
Publikováno v:
Key Engineering Materials. 910:604-609
To increase the durability of the cutting tool when machining parts in mechanical engineering and engine building, the method of applying a diffusion discrete oxide layer with a polycrystalline structure can be used. By identifying the durability of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0dd804fd1002a355da86dd1dfdda141f
https://doi.org/10.4028/p-1322tv
https://doi.org/10.4028/p-1322tv
Publikováno v:
American Mineralogist. 106:1860-1870
X-ray computed microtomography (CT) of impact rock varieties from the Kara astrobleme is used to test the method’s ability to identify the morphology and distribution of the rock components. Three types of suevitic breccias, clast-poor melt rock, a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b0a7dd1a394499394d4d03e582c0dfc9
https://doi.org/10.2138/am-2021-7578
https://doi.org/10.2138/am-2021-7578
Autor:
Vladimir A. Kopylov, Nikita V. Kopylov, Andrey V. Zhuravlev, Vitaly V. Loy, Valery P. Berdyshev
Publikováno v:
Journal of Siberian Federal University. Engineering & Technologies. :272-280
The article presents the structure of the method for the synthesis of microwave bandpass filters (BPF) on non-uniform lines, which makes it possible to select the structure and parameters of the BPF that provide the maximum length of the stop band to
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2e5bf925127c0812c0b71fb1b13ae02b
https://doi.org/10.17516/1999-494x-0308
https://doi.org/10.17516/1999-494x-0308