Results 71 to 80 of about 35,920 (261)

An Ultraviolet Study of CO Chemistry in the Magellanic Clouds

The Astronomical Journal
How does molecular cloud chemistry change with metallicity? In this work, we study the relation between molecular hydrogen (H _2 ) and carbon monoxide (CO) at 1/2 and 1/5 solar metallicity using ultraviolet absorption spectroscopy obtained as part of the
Kirill Tchernyshyov, Jessica K. Werk, Julia Roman-Duval   +2 more
doaj   +1 more source

Molecules in galaxies

, 2007
The main achievements, current developments and prospects of molecular studies in external galaxies are reviewed. They are put in the context of the results of several decades of studies of molecules in local interstellar medium, their chemistry and ...
Omont, Alain
core   +2 more sources

Earth Wind‐Driven Formation of Hematite on the Lunar Surface

Geophysical Research Letters, Volume 52, Issue 17, 16 September 2025.
Abstract The recent discovery of hematite (Fe2O3 ${\text{Fe}}_{2}{\mathrm{O}}_{3}$) in lunar high‐latitude regions challenges the notion that the Moon exists in a reduced state. However, the origin of hematite remains unclear. We conducted irradiation experiments using 10 keV O2+ ${\mathrm{O}}_{2}^{+}$ and H2+ ${\mathrm{H}}_{2}^{+}$ ions on Fe‐bearing ...
Xiandi Zeng, Ziliang Jin, Chuanfei Dong, Ziyu Huang, Meng‐Hua Zhu, Luyuan Xu, Liam Morrissey, Liang Wang   +7 more
wiley   +1 more source

Low‐Frequency Microwave Absorption Composites

Advanced Science, Volume 12, Issue 35, September 18, 2025.
The microwave absorption principles and low‐frequency performance factors are briefly introduced. Recent progress is systematically summarized in five different based composites. Then detailed analysis focuses on relationships and mechanisms about micro‐structure and macro‐performance.
Mukun He, Kaiyu Zhang, Hua Qiu, Hua Guo, Xiangcheng Li, Yongqiang Guo, Yali Zhang, Junwei Gu   +7 more
wiley   +1 more source

Matrix isolation as a tool for studying interstellar chemical reactions [PDF]

Since the identification of the OH radical as an interstellar species, over 50 molecular species were identified as interstellar denizens. While identification of new species appears straightforward, an explanation for their mechanisms of formation is ...
Ball, David W., Hauge, Robert H., Margrave, John L., Ortman, Bryan J.   +3 more
core   +1 more source

The formation of H_2 and HD with the master equation approach

, 2005
The formation of H2 and HD molecules on interstellar dust grains is studied using rate equation and master equation models. Rate equations are used in the analysis of laboratory experiments which examine the formation of molecular hydrogen on ...
Biham, Ofer, Lipshtat, Azi, Perets, Hagai B.   +2 more
core   +1 more source

iSELECTION: An Instrument to Study the Kinetics of Isomer‐Selected Gas‐Phase Ion‐Molecule Reactions

Chemistry–Methods, Volume 5, Issue 9, September 2025.
Isomer‐specific reactivity is key in cluster chemistry. Herein, it is shown that how combining drift‐tube ion mobility with mass spectrometry enables the derivation of reaction rate coefficients for coexisting C40+$\text{C}_{40}^{+}$ isomers, opening new avenues for studying complex chemical systems ...
Corentin Rossi, Anne P. Rasmussen, Bérenger Gans, Juraj Jašík, Jan Žabka, Marc Albaret, Hugo Bauduin, Christophe Charrière, Jean‐Philippe Dugal, Jérôme Guigand, Catherine Le Bris, Ugo Jacovella   +11 more
wiley   +1 more source

Relative Velocities between 13CO Structures within 12CO Molecular Clouds

The Astronomical Journal
Velocity fields of molecular clouds (MCs) can provide crucial information on the merger and split between clouds, as well as their internal kinematics and maintenance, energy injection and redistribution, and even star formation within clouds.
Lixia Yuan, Ji Yang, Xuepeng Chen, Yang Su, Shaobo Zhang, Xin Zhou, Zhiwei Chen, Qing-Zeng Yan, Min Fang, Fujun Du, Yan Sun, Hongchi Wang, Ye Xu   +12 more
doaj   +1 more source

Microwave Evidence For Interstellar Molecules [PDF]

Highlights of Astronomy, 1971
Some time ago, optical astronomy was successful in detecting the first molecular species in interstellar space. However, these have been limited to the three diatomic molecules CH, CH+, and CN. Consideration of this list made it rather natural, after the development of microwave astronomy, for some attention to be given to a search for OH, which has a ...
openaire   +2 more sources

Algae Protein Creates Sustainable Alternatives for Various Food Matrices: From Function to Nutrition

Comprehensive Reviews in Food Science and Food Safety, Volume 24, Issue 5, September 2025.
Abstract Protein deficiency and environmental deterioration are pressing and complex issues in traditional agriculture system. Algae, which can grow without the need of land and with minimal water, offer a rich source of protein. Recently, large‐scale algae cultivation and advanced extraction techniques have been developed, positioning algae protein as
Shaozong Wu, Paul Menut, Song Miao, Christelle Turchiuli   +3 more
wiley   +1 more source