Schoolchildren in their everyday school life are exposed to solar ultraviolet (UV) radiation. This may be through time spent outdoors whilst having meal breaks, physical education classes or other outdoor class orientated activities. This research, conducted at the University of Southern Queensland, investigates the UV exposure of schoolchildren and the effect real-time UV irradiances data and ...

Introduction: Protection against harmful effects of ultraviolet radiation (UV) is measured under Ultraviolet Protection Factor (UPF) scale. The utilization of protective clothing is the best way to deal with the damage caused by ultraviolet radiation. The purpose of this study was to compare the ultraviolet ray protective factor of pure cotton and cotton coated with ti...

Fourteen lipase low-producing (Lip-) mutants of Yarrowia lipolytica were obtained by UV mutagenesis. Complementation studies showed that ten of these mutants belonged to one complementation group. Two other mutants, Lip-132 and 223, complemented those of the first group. Lip-1123 complemented mutants of the first and second groups. Lip-1351 did not complement Lip-742, 417, 529 and 1133, which b...

Two types of photoreceptors are found in the median ocellus of Limulus. One type is maximally sensitive to ultraviolet (UV) light, the other to green light; they are called UV and VIS cells, respectively. Biphasic receptor potentials, consisting of a small initial hyperpolarizing phase and a later slow depolarizing phase, can be recorded from both receptor types. These biphasic responses are el...

basil plants (ocimum basilicum l.) were sprayed with salicylic acid (1mm) and exposed to ultraviolet-c (uv-c) radiation (40 wm-2) after emergence of six developed leaves. plants were grown for 18 days and exposed to uv-c for 5 mind-1 alternatively. chlorophyll a, chlorophyll b and carotenoide were considered for analysis of photosynthetic pigments. the results showed that the photosynthetic pig...

There are many benefi ts that are brought by sun, such as positive feeling and mood and trigger the production of vitamin D in skin. But giving to the skin an overdose of ultraviolet rays (UV) may be harmful to our bodies and result in premature skin ageing, skin cancers, eye damage and photoimmunosuppression. UV radiation is made up of three types of rays with different wavelength (λ): ultravi...

the role of the antioxidant defense system was studied in brassica napus, and subjected todifferent supplementary bands of ultraviolet radiation (uv-a, uv-b and uv-c). this study showed thatuv-b and uv-c induced oxidative stress as evidenced by an increase in lipid peroxidation and totalascorbate content. under uv-b and uv-c treatments, flavonoids and anthocyanins were increasedsignificantly co...

Channel modelling and performance of non-line-of-sight ultraviolet scattering communications Report Title The solar blind ultraviolet (UV) spectrum shows unique properties for wireless communication and sensing. Sufficient scattering in UV spectrum can make a non-line-of-sight (NLOS) communication scenario feasible. We present recent experimental and analytical results in non-line-of-sight UV c...

Ultraviolet imaging of nearby disk galaxies reveals the star-forming activity in these systems with unprecedented clarity. UV images recently obtained with the Shuttle-borne Ultraviolet Imaging Telescope (UIT) reveal a remarkable variety of star-forming morphologies. The respective roles of tides, waves, and resonances in orchestrating the observed patterns of starbirth activity are discussed i...