Since Corona Virus Disease (COVID) – 19 is considered a pandemic by the World Health Organization (WHO), governments, and communities, worldwide trying to prevent transmission reduce number of deaths caused virus. One method preventing spraying disinfectants using certain chemical compounds. However, chemicals can also hurt environment humans themselves if doses used are not existing standards....

Using germicidal lamps and Westinghouse sunlamps with and without filtration, the effectiveness of ultraviolet and near-ultraviolet light in inducing molecular and cellular changes was measured. Cell survival and the induction of resistance to 6-thioguanine or to ouabain were measured with V79 Chinese hamster cells, cell survival and neoplastic transformation were measured with C3H mouse 10 T 1...

Durie and Salmon (1) describe the technique of impregnation ofphotographic emulsion with liquid scintillator which allows rapid autoradiographic labeling. In attempting to use this method, we found that freezing the impregnated slides without special conditions led to the formation of large ice crystals and irregularities in the frozen scintillator. They appeared even when the dioxane did not c...

The global pandemic of coronavirus disease 2019 (COVID-19) has posed a serious threat to human society on both perspectives health and economy. Ultraviolet (UV) been verified capable damage the DNA RNA various microorganisms, including new coronavirus. parabolic reflector, key component upper-room ultraviolet germicidal irradiation (UVGI) device, plays vital role in collating restraining light....

Outside Front Cover: Photograph of the face a vacuum ultraviolet (VUV)-emitting lamp reflected by 15 cm (6”) diameter silicon wafer. Having radiating area 100 cm2, is optical source for commercial VUV photolithography system, manufactured Cygnus Photonics, with which polymers serve as dry photoresist. Its peak emission wavelength 172 nm allows photopatterning and cellulose 10 depth precision. F...

We carried out three choice experiments with 6116 nocturnal lepidopteran individuals (95 species, 7 families, 32 075 counts), each replicated 105 times during the seasons of 2 years. Moths were released indoors at centre a 10 × m area different lamps placed corner. In experiment 1, emitted ultraviolet (UV) (peak 365 nm), blue (450 green (520 nm) or cool white and 520 radiation. 2, UV was replac...