Malignant melanoma is considered to be the most aggressive form of skin neoplasms. Over the past few decades, the incidence rate of melanoma has steadily risen throughout the world. The risks of developing melanoma consist of intrinsic and environmental factors. Intrinsic factors generally include a family history and an inherited genotype, while the most relevant environmental factor is sun ex...

Human skin is constantly exposed to damaging ultraviolet radiation (UVR), which induces a number of acute and chronic disorders. To reduce the risk of UV-induced skin injury, people apply an additional external protection in the form of cosmetic products containing sunscreens. Nowadays, because of the use of some chemical filters raises a lot of controversies, research focuses on exploring nove...

The major radiation of the sun can be roughly divided into three regions: ultraviolet, visible, and infrared light. Detection in these three regions is important to human beings. The metal-insulator-semiconductor photodetector, with a simpler process than the pn-junction photodetector and a lower dark current than the MSM photodetector, has been developed for light detection in these three regi...

The purpose of this review is to summarize the peer-reviewed literature in relation to sunlight exposure assessment and the validity of using sunlight exposure questionnaires to quantify vitamin D status. There is greater variability in personal ultraviolet (UV) light exposure as the result of personal behavior than as the result of ambient UV light exposure. Although statistically significant,...

Exposure to UV radiation is known to be a causative factor in the induction of skin cancers and other sun-related disorders. Most acute responses of humans to UV exposure occur as a result of UVB (280 to 315 nm) exposures, as these wavelengths are highly sensitive in creating a human biological response. However, this does not mean that UVA radiation has no impact on human UV exposures and heal...

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 effect of different wavebands of artificial UV (UVB and UVA) and photosynthetically active radiation (PAR) was assessed in two species of the genus Ulva, U. olivascens and U. rotundata, from southern Spain in order to test for possible differences in acclimation of photosynthesis. Both species share similar morphology but are subject to different light environments: U. rotundata is an estua...

BACKGROUND Little information exists on the epidemiology of melanoma and the role of solar radiation in the development of melanoma in pigmented populations. OBJECTIVE To evaluate the relationship between exposure to solar radiation and the incidence of melanoma in US Hispanics and blacks. DESIGN Population-based ecological study. SETTING State cancer registries of New York, New Jersey, I...

OBJECTIVE To describe the prevalence and correlates of the use of sunless tanning products among US adolescents and their association with UV radiation exposure behaviors, including indoor tanning, sunburn experiences, and use of sunscreen while outdoors. DESIGN Telephone-based, random-digit-dialed, cross-sectional survey conducted from July 1 through October 30, 2004. SETTING Telephone-acc...