Results 51 to 60 of about 48,877 (239)

Understanding Active Photoprotection: DNA-Repair Enzymes and Antioxidants

open access: yesLife
The detrimental effects of ultraviolet radiation (UVR) on human skin are well-documented, encompassing DNA damage, oxidative stress, and an increased risk of carcinogenesis.
Emilio Garcia-Mouronte   +3 more
doaj   +1 more source

Proteção à radiação ultravioleta: recursos disponíveis na atualidade em fotoproteção Ultraviolet radiation protection: current available resources in photoprotection

open access: yesAnais Brasileiros de Dermatologia, 2011
A radiação ultravioleta pode provocar danos ao DNA, imunossupressão, alterações químicas e histológicas na epiderme, envelhecimento precoce, cataratas e carcinogênese, dentre outras deteriorações.
Tatiana Santana Balogh   +4 more
doaj   +1 more source

Calculation of light transmittance in a film: considerations of the coating geometry, the agent distribution, and its probability density distribution [PDF]

open access: yesarXiv, 2020
Transmittance is an important parameter for various films such as sunscreen films and creams, biofilms, coating materials, etc. Even if amounts of a sunscreen agent are the same, the transmittance greatly changes depending on the coating geometry (CG) and the agent distribution (AD) in the film. In this study, we calculate the transmittance considering
arxiv  

Biosynthetic Mechanism for Sunscreens of the Biocontrol Agent Lysobacter enzymogenes

open access: yesPLoS ONE, 2013
Lysobacter are ubiquitous environmental bacteria emerging as novel biocontrol agents and new sources of anti-infectives. So far, very little effort has been invested in the study of the biology of these Gram-negative gliding bacteria. Many Lysobacter species are characterized by their yellow-orange appearance.
Wang, Yan   +9 more
openaire   +5 more sources

Fotoexposição e fatores de risco para câncer da pele: uma avaliação de hábitos e conhecimentos entre estudantes universitários Photoexposure and risk factors for skin cancer: an evaluation of behaviors and knowledge among university students

open access: yesAnais Brasileiros de Dermatologia, 2010
FUNDAMENTOS: O câncer da pele é a neoplasia mais frequente no Brasil. Compreender as atitudes que influenciam a proteção e a exposição aos raios solares é extremamente importante para sua prevenção.
Ivan Gagliardi Castilho   +2 more
doaj   +1 more source

Prevention of Immunosuppression by Sunscreens in Humans Is Unrelated to Protection from Erythema and Dependent on Protection from Ultraviolet A in the Face of Constant Ultraviolet B Protection [PDF]

open access: yes, 2003
Sunscreens have been advocated as an important means of preventing skin cancer. Ultraviolet radiation induced immunosuppression is recognized as an important event in skin cancer development, yet the effectiveness of sunscreens in protecting the human ...
Barnetson, Ross StC.   +2 more
core   +1 more source

Knowledge, attitudes and practices about sun exposure and photoprotection in outpatients attending dermatology clinics at four hospitals in Lima, Peru Exposição solar e conhecimento, atitudes e práticas de fotoproteção em pacientes de unidades ambulatoriais de dermatologia em quatro hospitais de Lima, Peru

open access: yesAnais Brasileiros de Dermatologia, 2011
BACKGROUND: To establish the knowledge, about sun exposure and photoprotection in outpatients treated at the dermatology clinics in four hospitals in Lima, Peru.
Elizabeth Thomas-Gavelan   +4 more
doaj   +1 more source

Enzymatic Production Of Feruloylated Acylglycerols From Olive Fatty Acid Distillates As Sunscreen Agents [PDF]

open access: yes, 2008
This work was instigated to produce a novel sunscreen agent based on ferulate glycerol esters with the incorporation of olive fatty acid distillate, glycerol and ethyl ferulate by enzymatic processes. A suitable HPLC detection method was devised for the
Kong, Ching
core  

Potential of Frangipani (Plumeria alba) Leaves Extract as Ultra Violet Protection [PDF]

open access: yes, 2020
Sunlight is the source of life and energy. Besides that, sunlight also creates skin challenges such as sunburn, pigmentation, wrinkles, dermatitis, aging, and skin cancer.
Arimbawa, Putu Eka   +2 more
core   +2 more sources

Synthesis of PMCA (P-Methoxy Cinnamic Acid) using Perkin Reaction and Its Activity as Photo Protective and Antifungal Agent [PDF]

open access: yes, 2022
This study aimed to synthesize p-methoxy cinnamic acid through the Perkin reaction and to determine its activity as a photoprotective and antifungal agent against Candida albicans. The PMCA compound was synthesized by reacting p-methoxy benzaldehyde with
Indriyanti, Erwin   +2 more
core   +3 more sources

Home - About - Disclaimer - Privacy