Zobrazeno 1 - 10
of 14
pro vyhledávání: '"Alexei A. Petrov"'
Autor:
Alexei N. Petrov, Vera G. Kopiy
Publikováno v:
Nature Conservation Research: Заповедная наука, Vol 6, Iss 4, Pp 62-76 (2021)
Studies of the benthos in nearshore water areas within Protected Areas along the Black Sea are an important ecological task. In this connection, protected habitats can be recognised as intact natural areas, where the entire natural complex is preserv
Externí odkaz:
https://doaj.org/article/d9ba16668e154eea9d7211d55c50a644
Autor:
N. G. Baranova, S. B. Levchenko, Alexei Yu. Petrov, Ludmila N. Andreicheva, Vladislav Kuznetsov, Tatyana I. Marchenko-Vagapova, Fedor Maksimov, V. A. Grigoriev
Publikováno v:
Vestnik of Saint Petersburg University. Earth Sciences. 66
The main goal of this study was to elucidate the chronostratigraphic position of the sediments of lacustrine-bog stratum from the Ch-14 section located in the sub-latitudinal sector of the Chernaya River in the north of the Bolshezemelskaya tundra. T
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::64f677a658ae5abd3291fa9766eda852
https://doi.org/10.21638/spbu07.2021.206
https://doi.org/10.21638/spbu07.2021.206
Autor:
Yury N. Vigovsky, Nadya O. Reinhand, Alexei A. Petrov, Igor V. Bogdan, Yu. Vladimir Molocilo, Alexander N. Malov
Publikováno v:
SPIE Proceedings.
Dichromated gelatin (DG) is widely used in holography with traditional water developing technique, but it is possible to use one as the real time recording media under the hot vapor developing as well as the self-developing DG-modification. The absen
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5b634fd85bc070c8deebcf19658ed7c1
https://doi.org/10.1117/12.518225
https://doi.org/10.1117/12.518225
Publikováno v:
SPIE Proceedings.
Particularities of using CW and pulsed-periodic laser radiation for cutting sheet carbon-carbon composites material and carbon fabric were studied. The processes of shaping the channel of evaporation, ways of reduction of zone of thermal influence an
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b21decac17bdad410dc3000ad1451bed
https://doi.org/10.1117/12.464115
https://doi.org/10.1117/12.464115
Publikováno v:
SPIE Proceedings.
Experimental investigations of getting protective high temperature coatings on carbon-carbon composites by means of laser cladding were accomplished. The reactionary formation of coatings was investigated during laser melting of powders Si - C and Si
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7507d26867b7f4f496b88d2d67868370
https://doi.org/10.1117/12.464126
https://doi.org/10.1117/12.464126
Publikováno v:
SPIE Proceedings.
A method of layer by layer selective laser sintering is prosed to synthesize structural piezoelectric elements out of PZT ceramics. The dependence of density of sintered elements on the regimes of sintering was investigated. X-ray diffraction and x-r
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ccbbd56dcd1cfb73f1767270adfca46b
https://doi.org/10.1117/12.387590
https://doi.org/10.1117/12.387590
Publikováno v:
SPIE Proceedings.
The process of controlled laser sintering for powdered SHS compositions with the bases Ni-Ti and Ni-Al was realized. The optimal parameters of laser effect, under which the reaction of SHS proceeds in controlled regime, were determined. The phase com
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9f4ebbefc86ea2c3dc7933ab9755f900
https://doi.org/10.1117/12.337516
https://doi.org/10.1117/12.337516
Publikováno v:
Lasers as Tools for Manufacturing of Durable Goods and Microelectronics.
Auto oscillating surface optical-discharge plasma was formed in a metal vapor under normal conditions by steady-state irradiation with a cw CO 2 laser delivering radiation of moderate (2 - 4.5 MW/cm 2 ) intensity. A strong screening of the metal surf
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e083215f65dbe615e1d8248e3bb4deb7
https://doi.org/10.1117/12.237719
https://doi.org/10.1117/12.237719
Publikováno v:
Laser in Forschung und Technik / Laser in Research and Engineering ISBN: 9783540613169
Multiple layer SLS is a one from perspective method of such speed CAD modeling. Under selectivity we consider a possibility to scan of a laser beam over the free powder material surface by the some contour with account for the laser influence dose in
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7a3aea783d5540a956b4d123d76f1d77
https://doi.org/10.1007/978-3-642-80263-8_15
https://doi.org/10.1007/978-3-642-80263-8_15
Publikováno v:
Scopus-Elsevier
The selective laser gluing process for rapid prototyping was proposed and investigated in this work. The main feature of the method is the premixed composition of metal powder and solid thermoplastic glue of low melting point. The scan of a laser bea
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1d296982807e67004bf48a3c2af77936
https://doi.org/10.1364/cleo_europe.1996.cwf73
https://doi.org/10.1364/cleo_europe.1996.cwf73