Zobrazeno 1 - 10
of 5 865
pro vyhledávání: '"led lamp"'
Autor:
V. P. Kuzmenko
Publikováno v:
Омский научный вестник, Vol 1 (189), Pp 48-55 (2024)
The study covers the question of the dynamics of heat transfer in a household LED lamp and scenarios for simplifying the modeling of thermal distribution, including the account of heat conduction, convection and the influence of several LED light
Externí odkaz:
https://doaj.org/article/61ef0ef17c6a464f8da8a8a9d793f178
Publikováno v:
Инженерные технологии и системы, Vol 34, Iss 2, Pp 295-317 (2024)
Introduction. In the poultry industry, the use of local LED lighting systems with changeable light and correlated color temperature of the luminaire optical radiation during the photoperiod is promising. To maintain light intensity accurately at a sp
Externí odkaz:
https://doaj.org/article/10b1735b54be48248aa096137bb5f137
Publikováno v:
Stroitel’stvo: Nauka i Obrazovanie, Vol 14, Iss 1, Pp 149-158 (2024)
Introduction. In modern society, different types of lighting fixtures with a variety of shapes, colours and brightness are widely used. However, not all of them effectively fulfil their functions and can negatively affect human health. Optimal lighti
Externí odkaz:
https://doaj.org/article/5299901cc30944ebbb448f49e9ca764b
Publikováno v:
Vestnik MGTU, Vol 26, Iss 4, Pp 349-360 (2023)
The paper considers the photometric characteristics of LED retrofit lamps produced by the Russian-Chinese company Uniel: Uniel LED-G45-6W/4000K, Uniel LED-A60-8W/6500K, and Uniel LED-A60-9W/4000K, designed to replace traditional incandescent bulbs. D
Externí odkaz:
https://doaj.org/article/eb57c64a4f3142b288e0485e8aed3c3e
The effectiveness of light emitting diode (LED) lamps in the offshore purse seine fishery in Vietnam
Autor:
Nguyen Dang Nhat, Do Thanh Tien, Truong Van Dan, Nguyen Duy Quynh Tram, Nguyen Quang Lich, Ho Dang Phuc, Nguyen Ngoc Phuoc
Publikováno v:
Aquaculture and Fisheries, Vol 8, Iss 5, Pp 551-557 (2023)
Fishing with artificial light has become one of the most advanced, efficient, and common methods for the night-time purse seining in Vietnam. This study evaluated the radiation spectrum, CIE chromaticity coordinates, correlated color temperature (CCT
Externí odkaz:
https://doaj.org/article/4de665e804df4f4bb537047bd9376dc8
Publikováno v:
Технічна інженерія, Vol 1, Iss 91, Pp 127-132 (2023)
The article proposes the development of an automated lighting control system for special purpose objects, for example, a theater stage or a concert hall. Stage lighting plays an important role in the respective art and lamps are one of the types of l
Externí odkaz:
https://doaj.org/article/002298f3d6714dd3bf68dbd82235827a
Publikováno v:
Eng, Vol 4, Iss 2, Pp 1377-1392 (2023)
The main contribution of this paper is the assets of the current and voltage ripples in a buck converter with an LED load. The results indicate that the ripples are different and that it is possible to reduce the passive filter concerning the model o
Externí odkaz:
https://doaj.org/article/66e91ae89a654f2cac6b2653784db59e
Publikováno v:
Vestnik MGTU, Vol 25, Iss 4, Pp 305-312 (2022)
The paper analyzes the results of comparative studies of the lighting characteristics of retrofit LED lamps of the A60 form factor from various manufacturers: Uniel (Russia – China), JazzWay (Russia – China), Philips (Netherlands), Ecola (Russia)
Externí odkaz:
https://doaj.org/article/923c51e128914a1c975b8d7410b765b5
Publikováno v:
Frontiers in Chemistry, Vol 11 (2023)
The use of an irradiation source with a homogeneous distribution of irradiation in the volume of the reaction mixture belongs to the essential aspects of heterogeneous photocatalysis. First, the efficacy of six lamps with various radiation intensity
Externí odkaz:
https://doaj.org/article/92b0ada7c5594ad3bd3436d53c8826ba
Publikováno v:
Heliyon, Vol 9, Iss 9, Pp e19737- (2023)
Faulty LED lamps can cause a decrease in light efficiency, lead to flicker, and have a negative impact on creating a reliable, stable, and healthy light environment. However, many LED lamps’ faults are difficult to detect by electrical parameter me
Externí odkaz:
https://doaj.org/article/75dac0d3165b4772b62a86d47290edd0