Results 41 to 50 of about 6,898 (201)

Effect of polysaccharide capsule of the microalgae Staurastrum iversenii var. americanum on diffusion of charged and uncharged molecules, using EPR technique [PDF]

open access: yes, 2006
The existence of a mucilaginous envelope, sheath or capsule is usual in many desmids, but few data concerning its function are available. Previous studies of the transport function and permeation of molecules through the algae capsules were done using ...
Freire-Nordi, Cristina Souza   +3 more
core   +3 more sources

Computation of nitroxide–nitroxide distances in spin‐labeled DNA duplexes [PDF]

open access: yesBiopolymers, 2007
AbstractNanometer distances in nucleic acids can be measured by EPR using two 1‐oxyl‐2,2,5,5‐tetramethylpyrroline radicals, with each label attached via a methylene group to a phosphorothioate‐substituted backbone position as one of two phosphorothioate diastereomers (RP and SP).
Eric A, Price   +4 more
openaire   +2 more sources

Crystals as Rockets: Modulation of the Salient Temperature in Cocrystals by Solvent Mixture Composition

open access: yesAngewandte Chemie, EarlyView.
Compositionally engineered mixed solvated cocrystals enable modulation of thermosalient actuation. Guest ratio controls thermosalient temperature and propulsion intensity, providing a tunable platform for designing crystalline systems that exhibit stimuli‐responsive mechanical motion.
Ernesto A. Hernández‐Morales   +5 more
wiley   +2 more sources

High molar mass segmented macromolecular architectures by nitroxide mediated polymerisation [PDF]

open access: yes, 2013
A straightforward synthetic pathway based on nitroxide mediated polymerisation (NMP) for the synthesis of a variety of high molar mass segmented copolymers comprising both polystyrene (PS) and polyether segments is reported.
Claessens, Sven   +6 more
core   +2 more sources

Profluorescent Fluoroquinolone-Nitroxides for Investigating Antibiotic–Bacterial Interactions

open access: yesAntibiotics, 2019
Fluorescent probes are widely used for imaging and measuring dynamic processes in living cells. Fluorescent antibiotics are valuable tools for examining antibiotic–bacterial interactions, antimicrobial resistance and elucidating antibiotic modes of
Anthony D. Verderosa   +3 more
doaj   +1 more source

The Cellular and Organismal Effects of Nitroxides and Nitroxide-Containing Nanoparticles. [PDF]

open access: yesInt J Mol Sci
Nitroxides are stable free radicals that have antioxidant properties. They react with many types of radicals, including alkyl and peroxyl radicals. They act as mimics of superoxide dismutase and stimulate the catalase activity of hemoproteins. In some situations, they may exhibit pro-oxidant activity, mainly due to the formation of oxoammonium cations ...
Sadowska-Bartosz I, Bartosz G.
europepmc   +3 more sources

Spin density distribution in a partially magnetized organic quantum magnet [PDF]

open access: yes, 2007
Polarized neutron diffraction experiments on an organic magnetic material reveal a highly skewed distribution of spin density within the magnetic molecular unit. The very large magnitude of the observed effect is due to quantum spin fluctuations.
A. Cousson   +9 more
core   +3 more sources

Nitroxides as Radiation Protectors [PDF]

open access: yesMilitary Medicine, 2002
Selective protection of normal tissues from the damaging effects of ionizing radiation is an important objective in cancer treatment research. Likewise, radioprotective agents may be useful in protecting the human population in the event of radiation-related accidents or military conflicts.
James B, Mitchell, Murali C, Krishna
openaire   +2 more sources

Practical N-Hydroxyphthalimide-Mediated Oxidation of Sulfonamides to N-Sulfonylimines

open access: yesMolecules, 2019
A new method to prepare sulfonylimines through the oxidation of sulfonamides mediated by N-hydroxyphthalimide under mild conditions has been developed. Compared to reported oxidation methods, broader substrates scope and milder conditions were achieved ...
Jian Wang, Wen-Jing Yi
doaj   +1 more source

Localization of dexamethasone within dendritic core-multishell (CMS) nanoparticles and skin penetration properties studied by multi-frequency electron paramagnetic resonance (EPR) spectroscopy [PDF]

open access: yes, 2016
The skin and especially the stratum corneum (SC) act as a barrier and protect epidermal cells and thus the whole body against xenobiotica of the external environment. Topical skin treatment requires an efficient drug delivery system (DDS).
Anske, M.   +8 more
core   +1 more source

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