Results 41 to 50 of about 41,901 (356)

Formation of chlorinated breakdown products during degradation of sunscreen agent, 2-ethylhexyl-4-methoxycinnamate in the presence of sodium hypochlorite [PDF]

open access: yesGackowska, A., Przyby{\l}ek, M., Studzi\'nski, W. et al. Environ Sci Pollut Res (2016) 23: 1886. https://doi.org/10.1007/s11356-015-5444-0, 2018
In this study, a new degradation path of sunscreen active ingredient, 2-ethylhexyl-4-methoxycinnamate (EHMC) and 4-methoxycinnamic acid (MCA) in the presence of sodium hypochlorite (NaOCl), was discussed. The reaction products were detected using gas chromatography-mass spectrometry (GC-MS).
arxiv   +1 more source

Microbial sunscreens [PDF]

open access: yesMicrobial Biotechnology, 2011
Contains fulltext : 98101.pdf (Publisher’s version ) (Open Access)
openaire   +5 more sources

Unravelling the Photoprotective Mechanisms of Nature-Inspired Ultraviolet Filters Using Ultrafast Spectroscopy

open access: yesMolecules, 2020
There are several drawbacks with the current commercially available ultraviolet (UV) filters used in sunscreen formulations, namely deleterious human and ecotoxic effects.
Temitope T. Abiola   +2 more
doaj   +1 more source

Sunscreen: Photometric Signatures of Galaxies Partially Cloaked in Dyson Spheres [PDF]

open access: yesPASP 131 024102 (2019), 2018
The Search for Extraterrestrial Intelligence has so far come up negative for Kardashev Type III societies that capture all starlight from a galaxy. One possible reason is that shrouding a star in a megastructure is prohibitively expensive. Most of a galaxy's starlight comes from bright stars, which would require structures even larger than the ...
arxiv   +1 more source

DNA repair enzymes in sunscreens and their impact on photoageing—A systematic review

open access: yesPhotodermatology, Photoimmunology & Photomedicine, 2020
DNA damage is one of the main factors responsible for photoageing and is predominantly attributed to ultraviolet irradiation (UV‐R). Photoprotection by conventional sunscreens is exclusively prophylactic, and of no value, once DNA damage has occurred. As
H. Luze   +4 more
semanticscholar   +1 more source

Exponentially Increasing Incidences of Cutaneous Malignant Melanoma in Europe Correlate with Low Personal Annual UV Doses and Suggests 2 Major Risk Factors [PDF]

open access: yes, 2015
For several decades the incidence of cutaneous malignant melanoma (CMM) steadily increased in fair-skinned, indoor-working people around the world. Scientists think poor tanning ability resulting in sunburns initiate CMM, but they do not understand why ...
Akslen LA   +16 more
core   +2 more sources

A Novel Fluorescent-Material-Based Simple Method for Sunscreen Evaluation

open access: yesApplied Sciences, 2022
ISO standards exist for evaluating sunscreens, such as those based on visual inspection. This assessment yields subjective results and is thus unreliable.
Kae Nakamura   +3 more
doaj   +1 more source

Optics of sunscreen lotions: Preliminary results on scattering and absorption coefficients [PDF]

open access: yesarXiv, 2022
Sunscreen lotions are used to protect the skin from damage due to solar ultraviolet (UV) radiation. The active UV blocking components can be organic molecules or inorganic particles, for example TiO2. While both in vivo and in vitro methods exist for assessing the protective capacity of sunscreens, their basic optical properties have received little ...
arxiv  

Experimental and theoretical studies on the photodegradation of 2-ethylhexyl 4-methoxycinnamate in the presence of reactive oxygen and chlorine species [PDF]

open access: yesGackowska, A., Przyby{\l}ek, M., Studzi\'nski, W. et al. cent.eur.j.chem. (2014) 12: 612. https://doi.org/10.2478/s11532-014-0522-6, 2018
2-Ethylhexyl 4-methoxycinnamate (EHMC) is one of the most commonly used sunscreen ingredient. In this study we investigated photodegradation of EHMC in the presence of such common oxidizing and chlorinating systems as H2O2, H2O2/HCl, H2O2/UV, and H2O2/HCl/UV.
arxiv   +1 more source

Phototesting and photoprotection in LE [PDF]

open access: yes, 1997
Photosensitivity and induction of skin lesions following UV radiation is a common problem of patients with cutaneous and systemic forms of lupus erythematosus.
Cazenave A.   +15 more
core   +1 more source

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