In humans and animals, prolonged exposure to solar UV radiation may result in acute and chronic health effects on the skin, eye, and immune system. UVB exposure induces the production of vitamin D in the skin. The majority of positive health effects are related to this vitamin. Minimal erythe...
Accordingly, in vitro irradiation of keratinocytes with UVB light enhances the production of proinflammatory cytokines like interleukin-1 (IL-1), IL-6 and tumor necrosis factor 伪 (TNF伪). Moreover, in animal models as well as in humans increased levels of these cytokines were detected in the...
Mapping theUV_Voltageto intensity is straight forward. No UV light starts at 1V with a maximum of 15mW/cm2at around 2.8V. Arduino has a built-inmap() function, but map() does not work for floats. Thanks to users on the Arduino forum, we have a simple mapFloat() function: Copy Co...
Air purifiers with UV bactericidal functions are generally safe for humans, but there are some key factors to be aware of to ensure that it does not pose a potential health hazard. Ultraviolet sterilization mainly relies on UVC band (200-280nm) ultraviolet light to kill bacteria, viruses, ...
The study, published recently in Applied and Environmental Microbiology, is the first to expansively investigate the effects of various wavelengths of UV light on SARS-CoV-2 and other respiratory viruses, including the only wavelength harmless for humans to be exposed to without a shield....
Often, to improve the polymerization rate, I and Ci are increased, but higher light intensity and higher initiator concentrations can have cytotoxic effects [8,14]. Further, the low solubility of I2959 in water limits the maximum value of Ci in this system, and many light sources do not ...
根据后面的It showed that exposure to ultraviolet light causes mice to make a feel-good chemical, and this chemical may explain why so many people want to get a tan. The study may also help explain why people flock to beaches and coasts for relaxation,可知,强烈的紫外线辐射,除了灼伤人的皮...
This view has changed in recent years, so people are beginning to strengthen the protection against UVA radiation because they recognize the possible long-term and serious harm to humans. Depending on biological effects, ultraviolet light is divided into four bands at wavelengths: UVA band, ...
The possibility that exposure to nonionizing radiation might influence immune function in man was first considered in the early part of this century. However, although there has been interest in this area of research for a long time, progress has been ve
The ozone loss causes an increase in the biologically important part of the solar ultraviolet radiation (UV) reaching the Earth’s surface, which constitutes a threat to the biosphere, because of UV damaging effects on humans, animals and plants. The international agreements have reduced the ...