نتایج جستجو برای: sunlight

تعداد نتایج: 8986  

K Javidnia L Movahed R Miri S Golrangi

Nifedipine (NIF) a 1, 4-dihydropyridine calcium channel antagonist, undergoes photodegradation to nitroso analogues of dehydronifedipine (NDNIF) when exposed to sunlight. Photodegradation products of NIF have no clinical activity, so different formulations of NIF must remain unchanged. If NIF preparations become unstable in exposure to light, they could cause therapeutic failure. The present st...

2005
William H. Tolleson Shui-Hui Cherng Qingsu Xia Mary Boudreau Jun Jie Yin Wayne G. Wamer Paul C. Howard Hongtao Yu Peter P. Fu

Sunlight is a known human carcinogen. Many cosmetics contain retinoid-based compounds, such as retinyl palmitate (RP), either to protect the skin or to stimulate skin responses that will correct skin damaged by sunlight. However, little is known about the photodecomposition of some retinoids and the toxicity of these retinoids and their sunlight-induced photodecomposition products on skin. Thus...

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...

Journal: :Journal of the Royal College of Physicians of Edinburgh 2018

Journal: :Journal of Chemical Education 1990

Journal: :American Journal of Public Health 1976

Journal: :International Journal of Photoenergy 2005

Journal: :SSRN Electronic Journal 2018

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