Results 91 to 100 of about 64,278 (202)

Boronic acid functionalized silica microparticles for isolation of flavonoids from Hypericum perforatum

open access: yesJournal of the Turkish Chemical Society, Section A: Chemistry, 2017
We have selectively separated cis- and/or vicinal-diol-containing flavonoids from Hypericum perfaratum (HP) by adsorption/desorption using aminophenylboronic acid (APBA) functionalized uniform (1.6 μm) silica microparticles (BASPs) synthesized via the ...
Onur Çetinkaya   +3 more
doaj   +1 more source

Phytomelatonin Regulates Keratinocytes Homeostasis Counteracting Aging Process

open access: yesCosmetics, 2019
Phytomelatonin (PM) gained the greatest interest for its application in agriculture and its use to improve human health conditions. PM based supplement has been shown to possess antioxidant capabilities because it functions as a free radical scavenger ...
Francesca Ferri   +4 more
doaj   +1 more source

Ozone Oxidizes Glutathione to a Sulfonic Acid [PDF]

open access: yes, 2009
Biosurfaces are universally covered with fluid microfilms containing reduced glutathione (GSH) and other antioxidants whose putative roles include the detoxification of ambient ozone (O_3).
Colussi, A. J.   +2 more
core   +1 more source

Protection Against Cardiac Injury by Small Ca\u3csup\u3e2 +\u3c/sup\u3e-Sensitive K\u3csup\u3e+\u3c/sup\u3e Channels Identified in Guinea Pig Cardiac Inner Mitochondrial Membrane [PDF]

open access: yes, 2013
We tested if small conductance, Ca2 +‐sensitive K+ channels (SKCa) precondition hearts against ischemia reperfusion (IR) injury by improving mitochondrial (m) bioenergetics, if O2‐derived free radicals are required to initiate protection via SKCa ...
Aldakkak, Mohammed   +9 more
core   +1 more source

Removal of malathion from various waters by advanced oxidation processes [PDF]

open access: yes, 2015
Summary: The degradation of malathion was investigated under various conditions, including ultrasound (US) irradiation, ultraviolet (UV) irradiation, and the combination of US/UV, UV/ZnO, UV/H2O2, and US/UV/ZnO/H2O2.
Fadaei, A., Kargar, M.
core   +1 more source

RGC1/RGC2 deletions cause increased sensitivity to oxidative stress in Saccharomyces cerevisiae, which can be overcome by constitutive nuclear Yap1 expression [PDF]

open access: yes, 2016
Oxidative stress mechanism in yeast presents an innovative pathway to understand in creating the next generation of antifungal drugs. Rgc1 and Rgc2 are paralogous proteins that regulate the Fps1 glycerol channel in hyperosmotic stress.
Tsai, Michelle
core   +1 more source

Formation of quasi-free and bubble positronium states in water and aqueous solutions

open access: yes, 2013
It is shown that in aqueous solutions a positronium atom is first formed in the quasi-free state, and, after 50-100 ps, becomes localized in a nanobubble. Analysis of the annihilation spectra of NaNO3 aqueous solutions shows that the hydrated electron is
Byakov, Vsevolod M.   +4 more
core  

Understanding N-nitrosodimethylamine Formation in Water: Chloramine Chemistry, Kinetics, and A Proposed Reaction Pathway [PDF]

open access: yes, 2017
The formation of N-nitrosodimethylamine (NDMA) in drinking water systems is a concern because of its potential carcinogenicity and occurrence at toxicologically relevant levels.
Pham, Huong Thu
core   +2 more sources

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