INTRODUCTION Solar ultraviolet radiation (UV) at the earth's surface has Trees influence the amount of solar UV radiation that many implications for human health. Erythema is caused prireaches pedestrians. A three-dimensional model was demarily by the ultraviolet-B (UV-B) portion of the solar spec"eloped to predict the ultraviolet-B (UV-B) irradiance trum (280-315 nm) and to a lesser extent by ...

CI: confidence interval OR: odds ratio UV: ultraviolet I n this month’s Journal of the American Academy of Dermatology online, Lim et al summarize a large body of evidence that relates to the regulation of indoor ultraviolet (UV) tanning. From a public health perspective, the most important aspect of this issue is the association of indoor tanning with melanoma, the leading cause of death among...

We report on the surface modification of Sylgard-184 poly(dimethyl siloxane) (PDMS) networks by ultraviolet (UV) radiation and ultraviolet/ozone (UVO) treatment. The effects of the UV light wavelength and ambient conditions on the surface properties of Sylgard-184 are probed using a battery of experimental probes, including static contact angle measurements, Fourier transform infrared spectrosc...

[1] Dimethylsulphide (DMS) is a climatically important component of global biogeochemical cycles, through its role in the sulphur cycle. Changes in ultraviolet radiation (UV) exhibit both positive and negative forcings on the dynamics of production and turnover of DMS and its precursor dimethylsulphoniopropionate (DMSP). In this study we investigate the net forcing of UV on atmospheric DMS. The...

BACKGROUND AND AIMS Ultraviolet-B (UV-B) radiation effect on reproductive parts of the plants has received little attention. We studied the influence of UV-B radiation on flower and pollen morphology, pollen production and in vitro pollen germination and tube growth of six genotypes of soybean (Glycine max). METHODS Soybean genotypes were investigated by growing them under four levels of biol...

This report examines the dosimetry of ultraviolet (UV) radiation applied to dermatological treatments, and considers the definition of the radiation quantities and their measurement. Guidelines are offered for preferred measurement techniques and standard methods of dosimetry. The recommendations have been graded according to the American Joint Committee on Cancer classification of strength of ...

Elevated ultraviolet (UV) radiation has been demonstrated to stimulate litter decomposition. Despite years of research, it is still not fully understood whether the acceleration in litter degradation is primarily attributed to abiotic photodegradation or the combined effects of abiotic photodegradation and microbial decomposition. In this study, we used meta-analysis to synthesize photodegradat...

The mechanism of influence the UV- radiation biological processes into seeds agricultural plants is considered. technical parameters installation for pre-sowing treatment with ultraviolet lamps increasing permeability membranes cells in seed are defined. results experimental researches on have established that processing cotton treated rays, their germination and productivity crops shown.

Oviparous species that do not guard their eggs during development may suffer significant embryonic mortality. However, the way females lay eggs may help prevent this. For example, females of several newt species carefully wrap single eggs into leaves of aquatic vegetation in shallow water. Wrapping behaviour may protect eggs from predators and from mechanical damage. We hypothesized that egg-wr...

BACKGROUND Although the aetiology of glioma is poorly understood, the higher incidence in males has long suggested an occupational cause. AIM To investigate possible associations between occupational exposure to ionizing, ultraviolet (UV), radiofrequency (RF) and extremely low frequency (ELF) radiation and adult glioma risk. METHODS Case-control study using histologically confirmed cases of...