Results 101 to 110 of about 36,483 (226)

Photodissociation and the Morphology of HI in Galaxies

, 2004
Young massive stars produce Far-UV photons which dissociate the molecular gas on the surfaces of their parent molecular clouds. Of the many dissociation products which result from this ``back-reaction'', atomic hydrogen \HI is one of the easiest to ...
A Sternberg, AN Witt, BG Elmegreen, DA Smith, DJ Hollenbach, DJ Hollenbach, EJ Shaya, GB Field, J-M Deharveng, JE Pringle, JM Shull, L Vigroux, MG Wolfire, MG Wolfire, MJ Kaufman, O Laurent, R Braun, R Braun, RJ Allen, RJ Allen, RJ Allen, RJ Allen, RJ Allen, SC Madden, TP Stecher   +24 more
core   +2 more sources

The Impact of the Sulfur Allotropes and Sulfur Hydrides on the Venus Cloud Chemistry

Journal of Geophysical Research: Planets, Volume 131, Issue 5, May 2026.
Abstract Venus is home to vivid sulfur chemistry, with SO2 ${\text{SO}}_{2}$ as the major sulfur gas species and a global cloud layer between 47 and 70 km composed of H2SO4 ${\mathrm{H}}_{2}{\text{SO}}_{4}$ and H2 ${\mathrm{H}}_{2}$O. The chemistry in the clouds has been extensively studied with 1D models, but none is able to reproduce the three orders
Maxence Lefèvre, Franck Lefèvre, Anni Määttänen, Robert Skog, Benjamin Frandsen, Aurélien Stolzenbach, Ashwin Braude   +6 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

Near-IR photodissociation of peroxy acetyl nitrate [PDF]

Atmospheric Chemistry and Physics, 2005
Measurements of the C-H overtone transition strengths combined with estimates of the photodissociation cross sections for these transitions suggest that near-IR photodissociation of peroxy acetyl nitrate (PAN) is less significant (Jnear-IR≈3x10-8s ...
S. A. Nizkorodov, J. D. Crounse, J. L. Fry, C. M. Roehl, P. O. Wennberg   +4 more
doaj  

Crossover from the Ultracold to the Quasiclassical Regime in State-Selected Photodissociation

, 2018
Processes that break molecular bonds are typically observed with molecules occupying a mixture of quantum states and successfully described with quasiclassical models, while a few studies have explored the distinctly quantum mechanical low-energy regime.
Kondov, S. S., Lee, C. -H., Majewska, I., McDonald, M., McGuyer, B. H., Moszynski, R., Zelevinsky, T.   +6 more
core   +1 more source

Investigating the Impact of Rocket Exhaust on Ionospheric Disturbances

Space Weather, Volume 24, Issue 5, May 2026.
Abstract The study of chemical releases into the ionosphere is crucial for understanding ionospheric dynamics and managing space environmental effects. In this work, we investigate the impact of rocket exhaust emissions, particularly CO2 and H2O, on electron density in the ionosphere.
Cunqun Fan, Jianxiang Zhang, Zhou Chen, Yiwan Deng, Jinping Qi, Jing‐Song Wang, Yan Guo, Jialiang Zhang   +7 more
wiley   +1 more source

PHOTODISSOCIATION OF PbCl2

Acta Physica Sinica, 1988
The population on 6p2 3P2 metastable state and 6p2 3P0 ground state of Pb atoms are de-monstrated, which are originated from dissociating PbCl2 by the fourth harmonic of YAG lasers. The population ratio of 3P2 to 3P0 is measured in terms of laser-induced fluorescence.
null ZHANG JIE, null CHENG BING-YING, null ZHANG DAO-ZHONG, null WANG LI-HUA, null ZHAO YU-YING, null WANG TIAN-JUAN   +5 more
openaire   +1 more source

Phospholipid Profiling Established by Structure‐Rich Fragments for Molecular Species Level Shotgun Analysis

Rapid Communications in Mass Spectrometry, Volume 40, Issue 8, 30 April 2026.
ABSTRACT Rationale Accurate identification of phospholipid molecular species remains a major challenge in shotgun lipidomics because conventional tandem mass spectrometry typically resolves only one structural moiety at a time. This structural ambiguity limits confident lipid biomarker discovery and biological interpretation.
Rong Chen, Amber H. Jannasch, Bruce R. Cooper, Jonathan H. Shannahan, Christina R. Ferreira   +4 more
wiley   +1 more source

Photodissociation Processes Involving the SiH⁺ Molecular Ion: New Datasets for Modeling

Data
This paper investigates the photodissociation of the SiH+ molecular ion, a non-symmetric diatomic species composed of silicon and hydrogen. We provide calculated molecular data and characterize electronic states, deriving cross-sections and spectral ...
V. A. Srećković, H. Delibašić-Marković, L. M. Ignjatović, V. Petrović, V. Vujčić   +4 more
doaj   +1 more source

From the Modeling of Experiments to the Ab Initio Prediction of Rate Constants: Statistical Rate Theory for a Quantitative Understanding of Gas‐Phase Ion Chemistry

ChemPhysChem, Volume 27, Issue 8, 28 April 2026.
For directly comparing experimental results on gas‐phase ion reactions with the predictions from quantum chemical calculations, the latter must first be converted into rate constants. This review addresses the question of whether current methods of statistical rate theory can accomplish this task reliably. Statistical rate theory has long been used for
Thomas Auth, Konrad Koszinowski
wiley   +1 more source