Aim To use ultraviolet (UV) radiations in an indigenous method for sterilization of respirators for reuse during COVID-19 outbreak. Background COVID-19 outbreak has infected more than 200 countries. In India, till now, more than 100,000 cases have been reported. Healthcare workers are at high risk of developing infections being in the frontline of ...
Published in Journal of photochemistry and photobiology. B, Biology
Solar ultraviolet radiation (UV) induces photodegradation of optically and functionally important organic compounds in lakes and may negatively impact aquatic biota. We disentangled UV impacts on dissolved organic matter (DOM) transformation, and algal and zoobenthic micro-organisms in two shallow subarctic lakes in NW Finnish Lapland; in a high-UV...
Published in Optics and Spectroscopy
AbstractWe show that titanium dioxide particles capable of reactive oxygen species generation can be produced in titanium butoxide films by annealing them at 500°C. Optimal conditions for the films deposition by a modified Langmuir–Blodgett technique were selected basing on the film uniformity examined by optical and electron microscopy. The photoc...
Published in Journal of dermatological science
Ultraviolet radiation (UVR) is the most well-known cause of skin pigmentation accompanied with photoaging. Transforming growth factor (TGF)-β1 was previously shown to have anti-melanogenic property; however, it can induce scarring in skin. We investigated the effect of TGF-β3 on melanogenesis in human melanocytes cocultured with UV-irradiated skin ...
Published in Materials
The present study proposed a novel process for the matrix decomposition of carbon-fiber-reinforced plastics (CFRPs). For this purpose, the influence of ultraviolet (UV) radiation paired with semiconductors on CFRP was analyzed. Then, suitable process parameters for superficial and in-depth matrix decomposition in CFRP were evaluated. The epoxy resi...
Published in Space Science Reviews
Measurements by the REMS/UV sensor onboard the MSL Curiosity rover constitute the first in situ dataset of UV radiation flux at the surface of Mars. Due to its position on the Curiosity deck, the UV sensor has been directly exposed to dust deposition. Inaccuracies in the original angular response calibration functions have led to discrepancies betw...
This article aims to alert the medical community and public health authorities to accumulating evidence on health benefits from sun exposure, which suggests that insufficient sun exposure is a significant public health problem. Studies in the past decade indicate that insufficient sun exposure may be responsible for 340,000 deaths in the United Sta...
Published in International Journal of Environmental Research and Public Health
This article aims to alert the medical community and public health authorities to accumulating evidence on health benefits from sun exposure, which suggests that insufficient sun exposure is a significant public health problem. Studies in the past decade indicate that insufficient sun exposure may be responsible for 340,000 deaths in the United Sta...
Published in Photochemistry and photobiology
Using a model developed for estimating solar inactivation of viruses of biodefense concerns, we calculated the expected inactivation of SARS-CoV-2 virus, cause of COVID-19 pandemic, by artificial UVC and by solar ultraviolet radiation in several cities of the world during different times of the year. The UV sensitivity estimated here for SARS-CoV-2...
Published in American Journal of Infection Control
Background Since Vitamin D is known to be vital in regulating the immune system, and sunlight UV radiation exposure on the skin produces Vitamin D and UV intensity is highest nearest the equator, a study was done to examine the correlation between the latitude and COVID-19 fatality rates for countries. Methods Eighty-eight countries were selected b...
