نتایج جستجو برای: sunlight exposure

تعداد نتایج: 314079  

2011

Sunlight sustains life on earth. Sunlight is essential for vitamin D synthesis in the skin. The sun’s ultraviolet rays can be hazardous, however, because excessive exposure causes skin cancer and other adverse health effects. Skin cancer is amajor public health problem;more than 2 million new cases are diagnosed in the United States each year. Ultraviolet radiation (UVR) causes the 3 major form...

2011
Sophie J. Balk

Sunlight sustains life on earth. Sunlight is essential for vitamin D synthesis in the skin. The sun’s ultraviolet rays can be hazardous, however, because excessive exposure causes skin cancer and other adverse health effects. Skin cancer is amajor public health problem;more than 2 million new cases are diagnosed in the United States each year. Ultraviolet radiation (UVR) causes the 3 major form...

Journal: :CMAJ : Canadian Medical Association journal = journal de l'Association medicale canadienne 2001
E Weir

Journal: :journal of occupational health and epidemiology 0
j vatani hamedan h ghasemzadeh shahroud m raei tehran

background : farmers and welders who work in open spaces and are exposed to direct sunlight are often exposed to sunlight radiation o n the neck and head . thus, they may be afflicted with various types of skin cancer . the aim of the present study was to investigate the amount of uv exposure in welders working in shahrud city , iran .   materials and method s : this cross-sectional , descripti...

2017
Vivek G. Patwardhan Zulf M. Mughal Raja Padidela Shashi A. Chiplonkar Vaman V. Khadilkar Anuradha V. Khadilkar

BACKGROUND Despite abundance of sunshine in India, Vitamin D deficiency is common and therefore there is an increasing trend toward taking Vitamin D supplements either as prescription medicine or as a nutritional supplement. Studies have suggested that duration of sun exposure may influence serum lipid profile. OBJECTIVES To study the effect of increased sunlight exposure versus Vitamin D sup...

Journal: :Collegium antropologicum 2010
Bozo Vojniković Svatopluk Synek Vladimir Mićović Mirna Telezar Zeljko Linsak

The aim of this study was to examine the possible harmful effects of solar exposure on visual field damage in children living in Primorsko-Goranska County. Our previous work has shown noxious influence on visual field in children with anamnesis long term exposure to sunlight. This is an extended study, including children in Novi Vinodolski and Gorski kotar. We measured possible defect in isopte...

Journal: :نامه انجمن حشره شناسی ایران 0
k. veenakumari g. b. narabenchi r. j. rabindra a. mehrvar

seven geographic isolates of helicoverpa armigera npv were characterized by pcr-rflp techniques and their comparative virulence to second instar larvae of h. armigera (hã¼bner) were compared before and after exposure to simulated sunlight as well as open weather conditions on cotton and tomato plants. the pcr products of 25k fp region showed no difference among the isolates (780 bp). the pcr am...

2016
Mihyang An Stephen M. Colarelli Kimberly O'Brien Melanie E. Boyajian

This study investigated the effects of natural elements and direct and indirect sunlight exposure on employee mental health and work attitudes. We recruited participants via an online panel from the United States and India, and analyzed data from 444 employees. Natural elements and sunlight exposure related positively to job satisfaction and organizational commitment, and negatively to depresse...

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