Results 11 to 20 of about 2,739,180 (294)

Uncertainties in Galactic Chemical Evolution Models [PDF]

open access: yes, 2016
We use a simple one-zone galactic chemical evolution model to quantify the uncertainties generated by the input parameters in numerical predictions for a galaxy with properties similar to those of the Milky Way.
Côté, Benoit   +6 more
core   +2 more sources

Chemical evolution models with a new stellar nucleosynthesis [PDF]

open access: yes, 1994
Numerical models for the chemical evolution of the Galaxy have been computed with the new stellar yields published by Maeder (1992). These metallicity dependent yields represent an important improvement in the chemical evolution of galaxies but there are
Giovagnoli, A., Tosi, M.
core   +3 more sources

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

Coupling emitted light and chemical yields from stars: a basic constraint to population synthesis models of galaxies [PDF]

open access: yes, 2001
In this paper we emphasize the close connection between the chemical and spectrophotometric evolution of stellar systems: Chemical yields from stars correspond to a precise fraction of their emitted light.
Arimoto   +30 more
core   +2 more sources

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

Quasi-Chemical Theory and Implicit Solvent Models for Simulations [PDF]

open access: yes, 1999
A statistical thermodynamic development is given of a new implicit solvent model that avoids the traditional system size limitations of computer simulation of macromolecular solutions with periodic boundary conditions.
Pratt, Lawrence R., Rempe, Susan B.
core   +3 more sources

Exploring chemical space — Generative models and their evaluation

open access: yesArtificial Intelligence in the Life Sciences, 2023
Recent advances in the field of artificial intelligence, specifically regarding deep learning methods, have invigorated research into novel ways for the exploration of chemical space.
Martin Vogt
doaj   +1 more source

Simple models of the chemical field around swimming plankton [PDF]

open access: yes, 2010
Background. Cervical cancer is the fourth most common cancer in women, and we recently reported human leukocyte antigen (HLA) alleles showing strong associations with cervical neoplasia risk and protection.
Bao, Xiao,   +35 more
core   +2 more sources

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.
Galván, Inés M.   +2 more
core   +3 more sources

Galactic chemical evolution: Stellar yields and the initial mass function [PDF]

open access: yes, 2015
We present a set of 144 Galactic chemical evolution models applied to a Milky Way analogue, computed using four sets of low+intermediate star nucleosynthetic yields, six massive star yield compilations, and six functional forms for the initial mass ...
Cavichia, Oscar   +4 more
core   +5 more sources

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