Results 61 to 70 of about 13,910 (212)

Conditions Necessary for Chlorine Activation in the Midlatitude Summer Lower Stratosphere

Journal of Geophysical Research: Atmospheres, Volume 130, Issue 20, 28 October 2025.
Abstract Studies have suggested that ClO could be enhanced within convectively influenced air masses in the North American Monsoon Anticyclone due to low temperature and elevated water mixing ratio conditions that are conducive to chlorine activation, potentially leading to significant loss of ozone in the midlatitude lowermost stratosphere. We analyze
Laila V. Howar, Ross J. Salawitch, David M. Wilmouth, Eric J. Hintsa, Jennifer S. Hare, Thomas F. Hanisco, Jason M. St. Clair, Erin R. Delaria, Elliot L. Atlas, Sue Schauffler, Kate R. Smith, Jessica B. Smith, Bradley D. Hall, Fred L. Moore, Jasna V. Pittman, Bruce Daube, T. Paul Bui, Yaowei Li, Frank N. Keutsch, David S. Sayres, Steven C. Wofsy, Jonathan Dean‐Day, Stephen Donnelly, Victoria A. Treadaway, James G. Anderson, Cameron R. Homeyer, Kenneth P. Bowman   +26 more
wiley   +1 more source

Molecular photodissociation

, 2011
Photodissociation is the dominant removal process of molecules in any region exposed to intense ultraviolet (UV) radiation. This includes diffuse and translucent interstellar clouds, dense photon-dominated regions, high velocity shocks, the surface layers of protoplanetary disks, and cometary and exoplanetary atmospheres.
van Dishoeck, Ewine F., Visser, Ruud
openaire   +2 more sources

Pulsed Laser Synthesis of Carbon Nanostructures from Organic Molecular Liquids: Structure, Kinetics and Photophysical Properties

Advanced Science, Volume 12, Issue 37, October 6, 2025.
The non‐focused nanosecond pulsed laser irradiation of aromatic liquids produces amorphous carbon nanodots (CNDs) or curved‐graphene quantum dots (c‐GQDs) by surface‐catalyzed 0‐order reactions under kinetic control. C hybridization partially changes from sp2 to sp3. O‐based groups passivate the surface.
Antonio Ribeiro‐González, Carlos Agudo‐Blanco, Sergio Ramírez‐Barroso, Cristina Navío, Luis Bañares, Roger Bresolí‐Obach, Santi Nonell, Nazario Martín, David García‐Fresnadillo   +8 more
wiley   +1 more source

Modulating Photodissociation and Photobleaching via Plasmon Resonance to Enhance Light-Induced Nitric Oxide Release

Applied Nano
Localized therapeutic action and targeted drug release offer compelling advantages over traditional systemic drug administration. This is particularly important for nitric oxide (NO), whose biological effects vary greatly depending on concentration and ...
Danil V. Shershnev, Natalia A. Virts, Igor A. Gladskikh, Pavel V. Geydt, Mikhail A. Panfilov, Alexey Yu. Vorob’ev, Alexander E. Moskalensky   +6 more
doaj   +1 more source

Engineering Photolabile Cyclopentane‐Fused Coumarins: From One‐Pot Synthesis to Mechanistic Study for Visible Light‐Triggered Photolysis

Chemistry – An Asian Journal, Volume 20, Issue 19, October 3, 2025.
Cyclopentane fusion in coumarin photocages transforms their behavior from rapid SN1‐mediated release (minutes) to a slower elimination pathway (hours), accompanied by dramatic spectral changes upon photolysis, providing complementary tools for controlled‐release applications requiring different payload delivery rates.
Jau‐Tien Lin, Hsuan‐Yu Lin, Tai‐Chung Lo, Chih‐Ling Lin, Yi‐Hsien Li, Wei‐Hao Wu, Ting‐Yi Hsieh, Shun‐Yuan Luo, Chih‐Chien Chu   +8 more
wiley   +1 more source

Isolated spin polarized hydrogen atoms as targets for laser-induced polarized electron acceleration

Frontiers in Physics
High density Spin Polarized Hydrogen (SPH) atoms, which can be prepared using UV dissociation of hydro-halide molecules, can be attractive as potential targets for laser ionization/acceleration schemes aiming to create high energy and high current ...
Dimitris Sofikitis, Marios G. Stamatakis, Dimitrios G. Papazoglou, Dimitrios G. Papazoglou, T. Peter Rakitzis, T. Peter Rakitzis   +5 more
doaj   +1 more source

CALCULATION OF CHEMICAL EQUILIBRIUM IN THE INTERSTELLAR CLOUD

Odessa Astronomical Publications, 2017
In order to calculate the molecular concentrations in the interstellar cloud and to obtain heir spatial distribution we have made a computational code to solve the set of equations for chemical equilibrium and equations of charge and atom balance.
I. Shmeld, J. Freimanis, N. G. Bochkarev
doaj   +1 more source

Using Venus, Earth, and Mars to Understand Exoplanet Volatile and Climate Evolution

Journal of Geophysical Research: Planets, Volume 130, Issue 10, October 2025.
Abstract Venus, Earth, and Mars exhibit a wide range of interactions between their deep interiors, surfaces, lower and upper atmospheres, and the Sun, with commensurate variations in the nature of their atmospheres and evolution of their volatiles. By examining these worlds' characteristics and behavior, we can gain some understanding of the breadth of
Bruce M. Jakosky, Paul K. Byrne
wiley   +1 more source

A Global Map of Average Electron Densities in the Magnetosphere of Saturn

Journal of Geophysical Research: Space Physics, Volume 130, Issue 10, October 2025.
Abstract Measurements from the Cassini Radio and Plasma Wave Science (RPWS) experiment obtained during the entire orbital phase of the Cassini mission around Saturn (13.2 years) are processed into a meridional map of plasma densities, comprising the innermost region of the ring ionosphere, the Enceladus plasma torus, and the outer magnetosphere, up to ...
Ulrich Taubenschuss, Ondřej Santolík, David Píša, Masafumi Imai, Georg Fischer, Siyuan Wu, Michiko W. Morooka, William S. Kurth   +7 more
wiley   +1 more source

Near-UV photolysis cross sections of CH₃OOH and HOCH₂OOH determined via action spectroscopy [PDF]

Atmospheric Chemistry and Physics, 2007
Knowledge of molecular photolysis cross sections is important for determining atmospheric lifetimes and fates of many species. A method and laser apparatus for measurement of these cross sections in the near-ultraviolet (UV) region is described.
C. M. Roehl, Z. Marka, Z. Marka, J. L. Fry, J. L. Fry, P. O. Wennberg, P. O. Wennberg   +6 more
doaj