Results 21 to 30 of about 390,267 (298)

DESVENDANDO REAÇÕES E COLISÕES: COMO A QUÍMICA QUÂNTICA COMPUTACIONAL ASSISTE NO ENTENDIMENTO DAS FRAGMENTAÇÕES NA ESPECTROMETRIA DE MASSAS TANDEM POR COLISÃO [PDF]

Química Nova
Tandem mass spectrometry (MS/MS) occupies a central position in experimental and analytical sciences, with collision-induced dissociation (CID) standing out as a fundamental technique for investigating molecular structures.
Vinicius Kuchenbecker, Nelson Henrique Morgon   +1 more
doaj   +1 more source

The terminator "toy" chemistry test: a simple tool to assess errors in transport schemes [PDF]

Geoscientific Model Development, 2015
This test extends the evaluation of transport schemes from prescribed advection of inert scalars to reactive species. The test consists of transporting two interacting chemical species in the Nair and Lauritzen 2-D idealized flow field. The sources
P. H. Lauritzen, A. J. Conley, J.-F. Lamarque, F. Vitt, M. A. Taylor   +4 more
doaj   +1 more source

Water formation on bare grains: When the chemistry on dust impacts interstellar gas [PDF]

, 2010
Context. Water together with O2 are important gas phase ingredients to cool dense gas in order to form stars. On dust grains, H2 O is an important constituent of the icy mantle in which a complex chemistry is taking place, as revealed by hot core ...
Akai, Andersson, Andersson, Bachellerie, Bergeron, Bergin, Bolina, Brown, Caselli, Cazaux, Cazaux, Cazaux, Chang, Cuppen, Cuppen, D’Hendecourt, Fromherz, Garrod, Ghio, Gibb, Goldsmith, González, Hasegawa, Heine, Hollenbach, Hollenbach, Ioppolo, Jelea, Jeloaica, Jones, Jones, Katz, Lee, Lee, Lin, M. Marseille, M. Spaans, Meijerink, Miyauchi, Mokrane, Neufeld, Oberg, P. Caselli, Papoular, Pirronello, Rougeau, S. Cazaux, Sha, Snow, Tielens, V. Cobut, Walch, Whittet, Williams   +53 more
core   +4 more sources

Research Progress of Free Radical Chemistry-Tandem Mass Spectrometry for Fine Structure Analysis of Lipids [PDF]

Zhipu Xuebao
As one of the six major nutrients, lipids play important roles in various biological processes, including cell membrane construction, signal transduction, and energy metabolism.
JIAN Rui-jun, XIA Yu
doaj   +1 more source

Convection and chemistry effects in CVD: A 3-D analysis for silicon deposition [PDF]

, 1989
The computational fluid dynamics code FLUENT has been adopted to simulate the entire rectangular-channel-like (3-D) geometry of an experimental CVD reactor designed for Si deposition.
Chait, A., Gokoglu, S. A., Kuczmarski, M. A., Tsui, P.   +3 more
core   +3 more sources

The Kinetic Monte Carlo Model of the Auroral Electron Precipitation into N₂-O₂ Planetary Atmospheres

Universe, 2022
Auroral events are the prominent manifestation of solar/stellar forcing on planetary atmospheres. They are closely related to the energy deposition by and evolution of planetary atmospheres, and their observations are widely used to analyze the ...
Dmitri Bisikalo, Valery Shematovich, Benoit Hubert   +2 more
doaj   +1 more source

Symmetry breaking by quantum coherence in single electron attachment [PDF]

, 2017
Quantum coherence-induced effects in atomic and molecular systems are the basis of several proposals for laser-based control of chemical reactions. So far, these rely on coherent photon beams inducing coherent reaction pathways that may interfere with ...
Krishnakumar, E., Mason, Nigel J., Prabhudesa, Vaibhav S.   +2 more
core   +1 more source

Study of fragmentation dynamics for CO2q+ (q≤4) in strong laser fields

He jishu, 2022
BackgroundThe research of molecular fragmentation dynamics has attracted extensive attention in the fields of physics, chemistry and biology. The major challenge in this field is to understand the selectivity of molecular bond breaking and to elucidate ...
ZHANG Shuai, JIANG Wenbin, WANG Xincheng, JIANG Yuhai, ZHU Zhiyuan   +4 more
doaj   +1 more source

Antiradical Activity of Beetroot (Beta vulgaris L.) Betalains

Molecules, 2021
Flavonoids, phenolic acids, and anthocyanidins are widely studied polyphenolics owing to their antiradical activity. Recently, beetroot dyes have drawn an attention as possible radical scavengers, but scant information can be found on this topic. In this
Maciej Spiegel, Andrzej Gamian, Zbigniew Sroka   +2 more
doaj   +1 more source

Aqueous Equilibria: Acids, Bases, and Solubility. A General Chemistry Laboratory Experiment [PDF]

, 2000
We refer to two major types of general chemistry freshman laboratory experiments: discovery and cookbook. The typical Freshman enrolled in general chemistry has the skills to perform an experiment that is somewhere between cookbook and discovery, and we ...
Janusa, Michael A
core   +2 more sources