Zobrazeno 1 - 10
of 88
pro vyhledávání: '"Stefan A. Stefanov"'
Publikováno v:
Frontiers in Veterinary Science, Vol 10 (2023)
IntroductionPancreatic β-cells and α-cells have been found in the murine extrahepatic biliary ducts but not in the gallbladder. However, there has been no information reported in the specialized literature about the presence of glucagon- and insuli
Externí odkaz:
https://doaj.org/article/da20d62ce0064a01a92f9a758238dc90
Autor:
Stefan M. Stefanov
Publikováno v:
Journal of Information & Optimization Sciences. 44:243-253
The problems of quadratic programming are examined in this paper, particularly, the convex quadratic programming problems. Karush-Kuhn-Tucker (KKT) optimality conditions are formulated for the considered convex quadratic programming problems, and a n
Publikováno v:
Pharmaceuticals, Vol 14, Iss 11, p 1083 (2021)
The multifunctional role of the human skin is well known. It acts as a sensory and immune organ that protects the human body from harmful environmental impacts such as chemical, mechanical, and physical threats, reduces UV radiation effects, prevents
Externí odkaz:
https://doaj.org/article/1641fade9cb74d958bc7cdcd1c50ae23
Publikováno v:
Catalysts, Vol 11, Iss 6, p 694 (2021)
Hydrogen sulfide is frequently met in natural waters, like mineral springs, but mostly it is found in marine water with low renewal rate. The Black Sea has extremely high hydrogen sulfide content. It can be utilized in different ways, but the most pr
Externí odkaz:
https://doaj.org/article/8dbd70b1e01d4dabb9357dd5aecf57c8
Publikováno v:
Astronomische Nachrichten.
The Be stars display variable optical emission lines originating in the circumstellar disc. Here we analyse high resolution spectroscopic observations of Be stars and the distance between the peaks of H-alpha, H-beta, and H-gamma emission lines ($\De
Autor:
Irina Trifonova, Stefan Z. Stefanov
Publikováno v:
Open Journal of Modelling and Simulation. 10:58-69
Autor:
Stefan M. Stefanov
Publikováno v:
Journal of Interdisciplinary Mathematics. 25:951-962
There is no doubt that in the EU and the USA, engineering education has completely lost its previous prestige. The finest youths have shifted away from aspiring to become engineers towards aspiring to become professional economists and businessmen. I
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::89c5fef08631235d79061c69333fba06
https://hdl.handle.net/2117/385434
https://hdl.handle.net/2117/385434
Publikováno v:
Proceedings of the 8th World Congress on Mechanical, Chemical, and Material Engineering.
Autor:
Radoslav K. Zamanov, Kiril A. Stoyanov, Dragomir Marchev, Nikolay A. Tomov, Uwe Wolter, Michael F. Bode, Yanko M. Nikolov, Stefan Y. Stefanov, Alexander Kurtenkov, Georgi Y. Latev
We present new spectroscopic observations of the Be/black hole binary MWC 656 obtained during the period 2015 - 2021. We measure the equivalent width of H$\alpha$ (EW$_\alpha$), H$\beta$ ($EW_\beta$), and the distance between the peaks of H$\alpha$ (
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::56bf4509304f0b30c64cf8e8c43d58e9
http://arxiv.org/abs/2206.06013
http://arxiv.org/abs/2206.06013