Zobrazeno 1 - 7
of 7
pro vyhledávání: '"Lucyna Hemka"'
Publikováno v:
Bulletin of the Polish Academy of Sciences Technical Sciences. 64:915-923
This paper presents investigation of methods for reducing light pulsation and plasma temperature inside a high intensity discharge (HID) lamp arc tube. Differences found in light emission of an arc tube plasma channel under different power supply met
Publikováno v:
Proceedings of Electrotechnical Institute. 63:79-94
Autor:
Lucyna Hemka, K. Tomczuk
Publikováno v:
2018 Progress in Applied Electrical Engineering (PAEE).
This article presents research of temperature distribution inside discharge lamps arc tubes powered by different frequencies of electric energy at the same power. In presented research the electromagnetic 50 Hz ballast powered by mains and transistor
Autor:
Maciej Rafałowski, Lucyna Hemka
Publikováno v:
Proceedings of Electrotechnical Institute. 62:55-66
Publikováno v:
Proceedings of Electrotechnical Institute. 62:41-56
Autor:
A. Metera, Janina Gajc-Wolska, Lucyna Hemka, Katarzyna Mazur, D. Bujalski, Katarzyna Kowalczyk
Publikováno v:
Folia Horticulturae, Vol 25, Iss 2, Pp 153-159 (2013)
Light is one of the basic factors needed by plants for their development. The aim of this study was to measure the effect of supplementary lighting of tomato plants with HPS and LED lamps on the chosen physiological parameters and yielding of autumn-
Effect of supplementary lighting on selected physiological parameters and yielding of tomato plants.
Autor:
Gajc-Wolska, Janina, Kowalczyk, Katarzyna, Metera, Agata, Mazur, Katarzyna, Bujalski, Dawid, Hemka, Lucyna
Publikováno v:
Folia Horticulturae; 2013, Vol. 25 Issue 2, p153-159, 7p