Results 71 to 80 of about 31,252 (251)

Strong inverse kinetic isotope effect observed in ammonia charge exchange reactions

Nature Communications, 2020
Inverse kinetic isotope effects (KIEs) are rarely observed. Here, the authors report an inverse KIE in the charge transfer reaction of $${{\rm{Xe}}}^{+}$$ Xe+ with ammonia.
L. S. Petralia, A. Tsikritea, J. Loreau, T. P. Softley, B. R. Heazlewood   +4 more
doaj   +1 more source

The Role of Benzonitrile Chlorination Explored by Dissociative Electron Attachment

ChemPhysChem, Volume 27, Issue 9, 14 May 2026.
Experimental and theoretical dissociative electron attachment study of 2‐ and 4‐chlorobenzonitrile. The dissociative electron attachment process to ortho‐ and para‐chlorobenzonitrile was investigated in the 0–12 eV energy range with a crossed‐beam time‐of‐flight mass spectrometer, supported by quantum chemical scattering calculations.
Pedro Guerra, Mónica Mendes, Ely G. F. de Miranda, Rodrigo Rodrigues, Lucas M. Cornetta, Filipe Ferreira da Silva   +5 more
wiley   +1 more source

The nature of interstellar dust as revealed by light scattering

Atti della Accademia Peloritana dei Pericolanti : Classe di Scienze Fisiche, Matematiche e Naturali, 2011
Interstellar dust was first identified through the extinction that it causes of optical starlight. Initially, observational and theoretical studies of extinction were made to identify simple ways of removing the effect of extinction.
D. A. Williams
doaj   +1 more source

A search for diffuse bands in the circumstellar envelopes of post-AGB stars

, 2007
In this work we present the results of a systematic search for diffuse bands (DBs, hereafter) in the circumstellar envelopes of a carefully selected sample of post-AGB stars.
Allamandola, Arellano, Arkhipova, Bakker, Bujarrabal, Clube, Cohen, Cox, Cox, Crawford, D. A. García Hernández, de Jong, Desmurs, Douglas, Drimmel, Ehrenfreund, Ehrenfreund, Fernie, Fernández de Córdoba, Fitzgerald, Foing, Fujii, Fulara, Galazutdinov, García-Lario, García-Lario, García-Lario, Gauba, Gauba, Gauba, Guarinos, Guarinos, Heap, Heger, Herbig, Herbig, Hrivnak, Hrivnak, Hrivnak, Hrivnak, Hrivnak, Hrivnak, Hrivnak, Hu, Hu, Iglesias-Groth, Iglesias-Groth, Jenniskens, Kendall, Kerr, Klochkova, Klochkova, Klochkova, Krelowski, Krelowski, Krelowski, Kwok, Kwok, Le Bertre, Le Bertre, Le Bertre, Leger, Lewis, M. A. Satorre, Maas, Malfait, Mauron, McCall, Megier, Meixner, Merrill, N. L. J. Cox, O. Suárez, Oudmaijer, P. García Lario, Parthasarathy, Pottasch, Prichet, R. Luna, Reddy, Reddy, Reed, Reyniers, Ruiterkamp, Salama, Salama, Sarre, Sarre, Scarrott, Snow, Snow, Suárez, te Lintel Hekkert, Thorburn, Torres-Peimbert, Turner, Van de Steene, Van der Veen, Van der Zwet, Van Winckel, Van Winckel, Volk, Weselak, Zacs, Zacs, Zacs, Zacs   +106 more
core   +2 more sources

Structure and Spectroscopy of Criegee Intermediates in Gas‐ and Aqueous Environments

Helvetica Chimica Acta, Volume 109, Issue 5, May 2026.
ABSTRACT The dynamics and spectroscopy of the small (H2COO) and large (CH3CHOO) Criegee intermediates (CIs) in the gas phase, inside/on water droplets, on amorphous solid water (ASW) and in bulk water are investigated using validated energy functions.
Cangtao Yin, Meenu Upadhyay, Markus Meuwly   +2 more
wiley   +1 more source

Gas-grain chemistry in cold interstellar cloud cores with a microscopic Monte Carlo approach to surface chemistry

, 2007
AIM: We have recently developed a microscopic Monte Carlo approach to study surface chemistry on interstellar grains and the morphology of ice mantles.
Chang, Q., Cuppen, H. M., Herbst, E.
core   +1 more source

Mind and Cosmos as Throughput Systems: A Convergence Through the Throughput Model

Systems Research and Behavioral Science, Volume 43, Issue 3, Page 1212-1228, May/June 2026.
ABSTRACT This paper advances a conceptual and mathematical foundations approach by applying the throughput model (TPM) to cosmic phenomena, reframing the universe as an extended information processing system. TPM's four stages, Perception, Information, Judgement and Decision Choice, are reformulated in explicit information‐theoretic and dynamical ...
Waymond Rodgers
wiley   +1 more source

Discovery of Thionylimide, HNSO, in Space: The first N-, S-, and O-bearing Interstellar Molecule

The Astrophysical Journal Letters
We present the first detection in space of thionylimide (HNSO) toward the Galactic center molecular cloud G + 0.693-0.027, thanks to the superb sensitivity of an ultradeep molecular line survey carried out with the Yebes 40 m and IRAM 30 m telescopes ...
Miguel Sanz-Novo, Víctor M. Rivilla, Holger S. P. Müller, Izaskun Jiménez-Serra, Jesús Martín-Pintado, Laura Colzi, Shaoshan Zeng, Andrés Megías, Álvaro López-Gallifa, Antonio Martínez-Henares, Belén Tercero, Pablo de Vicente, David San Andrés, Sergio Martín, Miguel A. Requena-Torres   +14 more
doaj   +1 more source

Soft X‐Ray Emission From Saturn's Magnetosheath Part I: 3D Modeling From MHD Data

Journal of Geophysical Research: Space Physics, Volume 131, Issue 5, May 2026.
Abstract Saturn's magnetosheath hosts a mixed population of water‐group neutrals and solar wind plasma. We present a 3‐D model of soft X‐ray emission by ion‐neutral charge exchange in the near‐equatorial magnetosheath. The model employs MHD simulation data of plasma properties at Saturn, Enceladus‐genic neutral populations extrapolated from existing ...
P. C. Rogan, L. C. Ray, D. Naylor, W. R. Dunn, X. Jia, H. T. Smith, A. Sulaiman   +6 more
wiley   +1 more source

Hot Hydrogen in Prebiological and Interstellar Chemistry [PDF]

Science, 1975
Two articles discuss the recent experimental work of Hong et al. on the production of amino acids and gas-phase organic compounds from the ultraviolet irradiation of simple gases, with hot hydrogen atoms used as the principal energy conversion agent.
C, Sagan, R S, Becker
openaire   +2 more sources