Results 11 to 20 of about 1,158,124 (312)

Modeling and simulating chemical reactions [PDF]

open access: yesSIAM Review, 2008
Many students are familiar with the idea of modeling chemical reactions in terms of ordinary differential equations. However, these deterministic reaction rate equations are really a certain large-scale limit of a sequence of finer-scale probabilistic ...
Higham, Desmond J., Higham, D.J.
core   +8 more sources

Modelling the Chemical Evolution [PDF]

open access: yesProceedings of the International Astronomical Union, 2009
AbstractAdvanced observational facilities allow to trace back the chemical evolution of the Universe, on the one hand, from local objects of different ages and, secondly, by direct observations of redshifted objects. The chemical enrichment serves as one of the cornerstones of cosmological evolution.
Recchi, Simone, Hensler, Gerhard
openaire   +3 more sources

Deep Generative Models Enable Navigation in Sparsely Populated Chemical Space

open access: yes, 2021
Deep generative models are powerful tools for the exploration of chemical space, enabling the on-demand gener- ation of molecules with desired physical, chemical, or biological properties.
R. Greg, Stacey   +3 more
core   +1 more source

PNNARMA model: an alternative to phenomenological models in chemical reactors [PDF]

open access: yes, 2001
This paper is focused on the development of non-linear neural models able to provide appropriate predictions when acting as process simulators. Parallel identification models can be used for this purpose.
J.M. Zaldı́var   +5 more
core   +1 more source

The Synthesizability of Molecules Proposed by Generative Models

open access: yes, 2021
© 2020 American Chemical Society. All rights reserved. The discovery of functional molecules is an expensive and time-consuming process, exemplified by the rising costs of small molecule therapeutic discovery.
Coley, Connor W.   +2 more
core   +1 more source

Chemical element transport in stellar evolution models [PDF]

open access: yesRoyal Society Open Science, 2017
Stellar evolution computations provide the foundation of several methods applied to study the evolutionary properties of stars and stellar populations, both Galactic and extragalactic.
Maurizio Salaris, Santi Cassisi
doaj   +1 more source

Conceitos de química dos ingressantes nos cursos de graduação do Instituto de Química da Universidade de São Paulo Chemistry concepts held by freshmen students of the Institute of Chemistry, University of São Paulo

open access: yesQuímica Nova, 2008
A diagnostic instrument was developed to evaluate the basic chemistry concepts held by freshmen students of the three Chemistry undergraduate courses offered by the University of São Paulo.
Carmen Fernandez   +3 more
doaj   +1 more source

Modification of N-terminal α-amine of proteins via biomimetic ortho-quinone-mediated oxidation

open access: yesNature Communications, 2021
Methods for selective modification of the N-terminus of proteins are of high interest, but mostly require specific amino acid residues. Here, the authors report a selective and fast method for N-terminal modification of proteins based on quinone-mediated
Siyao Wang   +8 more
doaj   +1 more source

Generative Models for Chemical Structures

open access: yesJournal of Chemical Information and Modeling, 2010
We apply recently developed techniques for pattern recognition to construct a generative model for chemical structure. This approach can be viewed as ligand-based de novo design. We construct a statistical model describing the structural variations present in a set of molecules which may be sampled to generate new structurally similar examples.
David White   +3 more
core   +4 more sources

Non-physical species in chemical kinetic models: A case study of diazenyl hydroxy and diazenyl peroxide

open access: yes, 2022
Predictive chemical kinetic models often consider hundreds to thousands of intermediate chemical species. An even greater number of species, that might not participate in the model directly, are required to generate pressure-dependent reaction networks ...
Sharon, Haba   +2 more
core   +1 more source

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