Results 51 to 60 of about 158,830 (405)

The Photochemistry of Benzotriazole Derivatives. Part 2: Photolysis of 1-Substituted Benzotriazole Arylhydrazones: New Route to Phenanthridin-6-yl-2-phenyldiazines

open access: yesMolecules, 2011
Irradiation of 1-substituted benzotriazole arylhydrazones 3a–c, 4a,b and 5a,b with a 16 W low pressure mercury arc-lamp (254 nm) for 24 h gave phenanthridin-6-yl-2-phenyldiazines 9a–c, phenanthridin-6(5H)-ones 10a–c, 1-anilinobenzimidazoles 11a–c, 2-aryl-
Nouria A. Al-Awadi   +3 more
doaj   +1 more source

Direct photolysis of carbonyl compounds dissolved in cloud and fog~droplets [PDF]

open access: yesAtmospheric Chemistry and Physics, 2013
Gas-phase photolysis is an important tropospheric sink for many carbonyl compounds; however the significance of direct photolysis of these compounds dissolved in cloud and fog droplets is uncertain.
S. A. Epstein   +3 more
doaj   +1 more source

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

The role of UV photolysis and molecular transport in the generation of reactive species in a tissue model with a cold atmospheric pressure plasma jet

open access: yesApplied Physics Letters, 2019
Cold atmospheric pressure plasma jets (plasma) operated in ambient air provide a rich source of reactive oxygen and nitrogen species (RONS), which are known to influence biological processes important in disease.
B. Ghimire   +9 more
semanticscholar   +1 more source

Photochemical and Structural Studies on Cyclic Peptide Models

open access: yesMolecules, 2018
Ultra-violet (UV) irradiation has a significant impact on the structure and function of proteins that is supposed to be in relationship with the tryptophan-mediated photolysis of disulfide bonds. To investigate the correlation between the photoexcitation
Tamás Milán Nagy   +8 more
doaj   +1 more source

Photolysis of Staphyloxanthin in Methicillin‐Resistant Staphylococcus aureus Potentiates Killing by Reactive Oxygen Species

open access: yesAdvancement of science, 2019
Confronted with the severe situation that the pace of resistance acquisition is faster than the clinical introduction of new antibiotics, health organizations are calling for effective approaches to combat methicillin‐resistant Staphylococcus aureus ...
Pu-Ting Dong   +8 more
semanticscholar   +1 more source

Direct and indirect photolysis of triclocarban in the presence of dissolved organic matter

open access: yesElementa: Science of the Anthropocene, 2015
Photolysis is an important attenuation pathway for the removal of wastewater effluent organic micropollutants from surface waters. In this work, direct and indirect processes leading to the degradation of the disinfectant, triclocarban were studied ...
Tamara D. Trouts, Yu-Ping Chin
doaj   +1 more source

Photolysis of pure solid O3 and O2 films at 193 nm [PDF]

open access: yes, 2010
We studied quantitatively the photochemistry of solid O3 and O2 films at 193 nm and 22 K with infrared spectroscopy and microgravimetry. Photolysis of pure ozone destroyed O3, but a small amount of ozone remained in the film at high fluence. Photolysis of pure O2 produced O3 in an amount that increased with photon fluence to a stationary level.
arxiv   +1 more source

Shape resonances in H$_2$ as photolysis reaction intermediates [PDF]

open access: yes, 2021
Shape resonances in H$_2$, produced as reaction intermediates in the photolysis of H$_2$S precursor molecules, are measured in a half-collision approach. Before desintegrating into two ground state H atoms, the reaction is quenched by two-photon Doppler-free excitation to the F electronically excited state of H$_2$.
arxiv   +1 more source

Photochemical transformation of perfluoroalkyl acid precursors in water using engineered nanomaterials [PDF]

open access: yes, 2020
The production of perfluoroalkyl acids (PFAAs) has been phased out over recent decades; however, no significant decline in their environmental concentrations has been observed.
Dai, Yunrong   +4 more
core  

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