Results 21 to 30 of about 121,504 (326)

Degradation of Doxycycline, Enrofloxacin, and Sulfamethoxypyridazine under Simulated Sunlight at Different pH Values and Chemical Environments

open access: yesAgronomy, 2022
In this work, the dissipation of the antibiotics doxycycline (DC) (from the group of tetracyclines), enrofloxacin (ENR) (a fluoroquinolone), and sulfamethoxypyridazine (SMP) (a sulfonamide) is investigated both under simulated sunlight and in the dark ...
Cristina Álvarez-Esmorís   +5 more
doaj   +1 more source

Photochemical generation of the 2,2,6,6-tetramethylpiperidine-1-oxyl (TEMPO) radical from caged nitroxides by near-infrared two-photon irradiation and its cytocidal effect on lung cancer cells

open access: yesBeilstein Journal of Organic Chemistry, 2019
Novel caged nitroxides (nitroxide donors) with near-infrared two-photon (TP) responsive character, 2,2,6,6-tetramethyl-1-(1-(2-(4-nitrophenyl)benzofuran-6-yl)ethoxy)piperidine (2a) and its regioisomer 2b, were designed and synthesized. The one-photon (OP)
Ayato Yamada   +7 more
doaj   +1 more source

Study of photolysis on the active material Phenylbutazone in veterinarian drug Isophen [PDF]

open access: yesمجلة جامعة الانبار للعلوم الصرفة, 2013
The veterinary medicine isophen was used in this study. Isophen contains phenylbutazone as active material .Numbers of samples of isophen were prepared and were determined absorbance were determined and comparison subjected to radiation for different ...
Hanan H. Flaeh   +3 more
doaj   +1 more source

Fotocatálisis con dióxido de titanio nanoparticulado como método alternativo para depurar agua de mar destinada a la acuicultura

open access: yesAquaTechnica, 2022
RESUMEN | El agua utilizada en acuicultura debe presentar excelente calidad microbiológica, de manera que garantice el éxito de la producción. En esta industria se utilizan frecuentemente algunos métodos de tratamientos microbicidas tales como filtración,
José Felix Bernal   +3 more
doaj   +1 more source

High-spin intermediates of the photolysis of 2,4,6-triazido-3-chloro-5-fluoropyridine

open access: yesBeilstein Journal of Organic Chemistry, 2013
In contrast to theoretical expectations, the photolysis of 2,4,6-triazido-3-chloro-5-fluoropyridine in argon at 5 K gives rise to EPR peaks of just two triplet mononitrenes, two quintet dinitrenes, and a septet trinitrene.
Sergei V. Chapyshev   +3 more
doaj   +1 more source

SYNTHESIS AND PHOTOLYSIS OF SOME TRANSITION METAL COMPLEXES OF SCHIFF BASE LIGAND DERIVED FROM ETHYLENEDIAMINE AND SALICYLICALDEHYDE [PDF]

open access: yesمجلة جامعة الانبار للعلوم الصرفة, 2007
This study deals with the preparation of Schiff- base ligands from the reaction of salicaldehyde with ethylenediamine in the ratios 1:1 of ligand (1) and 1:2 of ligand (2).
WALEED.F. AL-HITY   +2 more
doaj   +1 more source

A single cell death is disruptive to spontaneous Ca2+ activity in astrocytes

open access: yesFrontiers in Cellular Neuroscience, 2022
Astrocytes in the brain are rapidly recruited to sites of injury where they phagocytose damaged material and take up neurotransmitters and ions to avoid the spreading of damaging molecules.
Veronica Gomez-Godinez   +8 more
doaj   +1 more source

Photolytic Hazes in the Atmosphere of 51 Eri b [PDF]

open access: yes, 2016
We use a 1D model to address photochemistry and possible haze formation in the irradiated warm Jupiter, 51 Eridani b. The intended focus was to be carbon, but sulfur photochemistry turns out to be important.
Marley, Mark S.   +3 more
core   +3 more sources

The Atmospheric Chemistry of GJ 1214b: Photochemistry and Clouds [PDF]

open access: yes, 2011
Recent observations of the transiting super-Earth GJ 1214b reveal that its atmosphere may be hydrogen-rich or water-rich in nature, with clouds or hazes potentially affecting its transmission spectrum in the optical and very-near-IR.
Asplund   +37 more
core   +1 more source

New light on vitamin B12: The adenosylcobalamin-dependent photoreceptor protein CarH

open access: yesSouth African Journal of Science, 2016
Adenosylcobalamin (AdoCbl), or coenzyme B12, is a cofactor for enzymes important in metabolism in humans (and other mammals) and bacteria. AdoCbl contains a Co-C bond and is extremely light sensitive, but, until recently, this light sensitivity appeared ...
Susan M. Chemaly
doaj   +1 more source

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