Results 31 to 40 of about 1,577,920 (354)

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

open access: yesGeoscientific 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   +4 more
doaj   +1 more source

Electron Capture Dissociation Mass Spectrometry of Metallo-Supramolecular Complexes [PDF]

open access: yes, 2010
The electron capture dissociation (ECD) of metallo-supramolecular dinuclear triple-stranded helicate Fe2L3 4 ions was determined by Fourier transform ion cyclotron resonance mass spectrometry.
Cooper, Helen J.   +3 more
core   +1 more source

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

open access: yesUniverse, 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   +2 more
doaj   +1 more source

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

open access: yesZhipu 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

Antiradical Activity of Beetroot (Beta vulgaris L.) Betalains

open access: yesMolecules, 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   +2 more
doaj   +1 more source

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

open access: yesHe 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   +4 more
doaj   +1 more source

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

open access: yes, 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   +53 more
core   +3 more sources

Are the program packages for molecular structure calculations really black boxes? [PDF]

open access: yesJournal of the Serbian Chemical Society, 2007
In this communication it is shown that the widely held opinion that compact program packages for quantum-mechanical calculations of molecular structure can safely be used as black boxes is completely wrong.
Mraković Ana   +4 more
doaj   +3 more sources

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

open access: yes, 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.   +3 more
core   +3 more sources

Contextualizando reações ácido-base de acordo com a teoria protônica de Brönsted-Lowry usando comprimidos de propranolol e nimesulida

open access: yesQuímica Nova, 2013
This paper reports the use of alternative materials for teaching experimental chemistry. In this context, nimesulide and propranolol tablets were used to teach chemical concepts about acid-base reactions according to Brönsted-Lowry protonic Theory ...
Arlan de Assis Gonsalves   +3 more
doaj   +1 more source

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