Results 21 to 30 of about 418,242 (295)

Formation of fatty acid esterified vitamin D3 in rat skin by exposure to ultraviolet radiation

open access: yesJournal of Lipid Research, 1983
The formation of fatty acid esters of vitamin D3 was demonstrated in rat skin exposed to artificial ultraviolet rays by using multi-dimensional high-performance liquid chromatography, ultraviolet spectrophotometry, and gas-liquid chromatography-mass ...
K Takada
doaj   +1 more source

Possible values of UV index in Serbia [PDF]

open access: yesSrpski Arhiv za Celokupno Lekarstvo, 2008
INTRODUCTION UV Index is an indicator of human exposure to solar ultraviolet (UV) rays. The numerical values of the UV Index range from 1-11 and above. There are three levels of protection against UV radiation; low values of the UV Index - protection is ...
Letić Milorad
doaj   +1 more source

THE ULTRAVIOLET RAYS IN THE TREATMENT OF CHILBLAIN [PDF]

open access: yesJournal of the American Medical Association, 1919
Chilblain, or erythema pernio, is a form of erythema that appears in the late fall and winter months in individuals with a poor peripheral circulation and a disturbed vasomotor mechanism. In the mild cases there is merely a slight dusky or dark red discoloration of the regions with feeble peripheral circulation, as the tip of the nose, the lobes of the
openaire   +2 more sources

Ultraviolet radiation emitted by lamps, TVs, tablets and computers: are there risks for the population? [PDF]

open access: yesAnais Brasileiros de Dermatologia, 2015
The frequent human exposure to various types of indoor lamps, as well as other light sources (television monitors, tablets and computers), raises a question: are there risks for the population?
Ida Alzira Gomes Duarte   +2 more
doaj   +2 more sources

Identification of Rays through DNA Barcoding: An Application for Ecologists [PDF]

open access: yes, 2012
DNA barcoding potentially offers scientists who are not expert taxonomists a powerful tool to support the accuracy of field studies involving taxa that are diverse and difficult to identify.
Owen O'Shea   +39 more
core   +2 more sources

Limits to the salience of ultraviolet: Lessons from colour vision in bees and birds [PDF]

open access: yes, 2001
Publisher version: http://jeb.biologists.org/content/204/14/2571/F1 ...
Chittka, L, Dyer, AG, Kevan, PG
core   +4 more sources

The effects of tanning on health

open access: yesJournal of Education, Health and Sport, 2017
Ultraviolet (UV) ray exposure can lead to serious consequences to a person(s) health. Consequences include skin pigmentation and can also lead to cancer. Not everyone however is aware of the risks involved with exposure to these rays.
Irena Puszkarz   +2 more
doaj   +3 more sources

Development and spatio-spectral mapping of a capillary high harmonic source [PDF]

open access: yes, 2008
This work describes the development and operation of a capillary based High Harmonic Generation (HHG) system. Using this system a coherent beam of soft x-rays is generated, studied and applied.
Praeger, Matthew
core   +1 more source

Sunscreens: Time to think beyond UV rays

open access: yesPigment International, 2018
It has been known to us that solar radiation contributes to photoaging. Until recently, it was thought to be due to ultraviolet rays alone. However, a growing number of evidence confirms that visible and infrared (IR) rays also contribute to extrinsic ...
Chitralekha Keisham   +2 more
doaj   +1 more source

Home - About - Disclaimer - Privacy