Zobrazeno 1 - 10
of 54
pro vyhledávání: '"V. A. Yushchenko"'
Publikováno v:
Odessa Astronomical Publications, Vol 26, Iss 1, Pp 131-136 (2013)
The spectra of HD47536 with resolving power R=30,000 and signal to noise ratio near 100 was obtained at 1.5 meter SMART telescope of CTIO, Chile.The analysis of chemical composition allowed to find the abundances of 33 chemical elements including th
Externí odkaz:
https://doaj.org/article/e612f249a0a14416800b0a44750a93ce
Publikováno v:
Odessa Astronomical Publications, Vol 25, Iss 1, Pp 9-17 (2012)
According to the modern theory of the evolution of chemical elements their origin seems understandable for most of the elements, from the lightest up to the heavy ones. For element with atomic number Z=3 (lithium) the situation is following: the phys
Externí odkaz:
https://doaj.org/article/99bb3419a41846e3aef88da5456e31e3
Publikováno v:
Odessa Astronomical Publications, Vol 23, Iss 0, Pp 41-43 (2010)
We discuss some statistical results on the evolution of magnetic CP stars in the framework of the supposition about their binary nature.
Externí odkaz:
https://doaj.org/article/32d0d544f9674f749a553a6999775d53
Publikováno v:
Optoelectronics, Instrumentation and Data Processing. 57:106-113
A method of focused delivery of ultrasonic energy to a given point inside a biological object using a circular antenna array is proposed. The functional diagram of a multielement circular array with alternating emitting and receiving elements is pres
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1f19a2bb31da4925e420420d97f76431
https://doi.org/10.3103/s8756699021010143
https://doi.org/10.3103/s8756699021010143
Autor:
Aizat Demessinova, Chulhee Kim, Yeuncheol Jeong, Dmytry N. Doikov, Alexander V. Yushchenko, Sergii V. Khrapatyi, V. A. Yushchenko
Publikováno v:
Journal of Astronomy and Space Sciences. 37:157-163
High resolution spectroscopic observation of V1719 Cyg were made at 1.8 meter telescope of Bohyunsan Optical Astronomy observatory in Korea. Spectral resolving power was R=45,000, signal to noise ratio S/N>100. The abundances of 28 chemical elements
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::30dafe11f9db2199fdc9db0b487bf49e
https://doi.org/10.5140/jass.2020.37.3.157
https://doi.org/10.5140/jass.2020.37.3.157
Autor:
V. F. Gopka, V. A. Yushchenko, Alexander V. Yushchenko, Aizat Demessinova, Kyung Sook Jeong, Yeuncheol Jeong, Pakakaew Rittipruk
Publikováno v:
Journal of Astronomy and Space Sciences, Vol 36, Iss 3, Pp 105-113 (2019)
Spectroscopic observations of barium star ζ Capricornus (HD204075) obtained at the 8.2 m telescope of the European Southern Observatory, with a spectral resolving power R = 80,000 and signal to noise ratio greater than 300, were used to refine the a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6d864e6cba6f7a4cb7d6d7f3deb509a4
https://doi.org/10.5140/jass.2019.36.3.105
https://doi.org/10.5140/jass.2019.36.3.105
Publikováno v:
Известия высших учебных заведений. Поволжский регион:Технические науки, Iss 4 (2020)
Background. The object of the research is an optoelectronic detection system for unmanned aerial vehicles and armored vehicles. The subject of the research is the methods of identifying and classifying a moving object against a complex nonuniform bac
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::de86ea376d4cb7d6e66842966e110f0f
https://doi.org/10.21685/2072-3059-2020-4-4
https://doi.org/10.21685/2072-3059-2020-4-4
Publikováno v:
Optoelectronics, Instrumentation and Data Processing. 54:270-276
The reconstruction of an image of the cross section of a thin wire obtained by an ultrasonic detector in an aqueous medium at a frequency of 1.3 MHz with a monochromatic probing signal is considered. The image was reconstructed using a synthesized ap
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8f8ecd4b1e6091faedcf617ed3d9e30b
https://doi.org/10.3103/s8756699018030093
https://doi.org/10.3103/s8756699018030093
Autor:
V. F. Gopka, Y. Jeong, Ch. Kim, S. V. Vasil'Eva, S. M. Andrievsky, Angelina Shavrina, A. V. Yushchenko, Yu. Lyubchik, Ya. V. Pavlenko, V. A. Yushchenko
Publikováno v:
Kinematics and Physics of Celestial Bodies. 34:123-133
The actinium abundance in the atmospheres of red supergiants PMMR23 and PMMR144 in the Small Magellanic Cloud and RM_1-667 in the Large Magellanic Cloud was estimated. The results of spectral observations with the ESO 3.6-m telescope with resolving p
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::90b1312f3ab7ecea6a85a0d2c53b659e
https://doi.org/10.3103/s0884591318030054
https://doi.org/10.3103/s0884591318030054
Autor:
V. F. Gopka, Pakakaew Rittipruk, Angelina Shavrina, Young-Woon Kang, Y. Jeong, Sungeun Kim, S. M. Andrievsky, A. A. Raikov, A. V. Yushchenko, V. A. Yushchenko, S. V. Vasil'Eva
Publikováno v:
Kinematics and Physics of Celestial Bodies. 33:199-216
The chemical composition of the PMMR23 red supergiant located in the Small Magellanic Cloud (SMC) is analyzed. The abundance of 35 chemical elements and the upper limits of abundance for Tl and U are found. The relative abundance of heavy elements is
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::673f8f09982d77e8d17c6bbf7dbd3cd2
https://doi.org/10.3103/s0884591317050075
https://doi.org/10.3103/s0884591317050075