Zobrazeno 1 - 10
of 87
pro vyhledávání: '"G G B de Souza"'
Publikováno v:
The Journal of chemical physics. 153(7)
The ratios of single, double, and triple ionizations to the total photoionization of the halothane (C
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=pmid________::4269f1b24b91204a6f592aac95bcd539
https://pubmed.ncbi.nlm.nih.gov/32828076
https://pubmed.ncbi.nlm.nih.gov/32828076
Autor:
Lautaro R, Varas, Felipe, Fantuzzi, Lúcia Helena, Coutinho, Rafael B, Bernini, Marco Antonio Chaer, Nascimento, G G B, de Souza
Publikováno v:
RSC advances. 10(58)
Disulfide bonds (-S-S-) are commonly present in biomolecules and have also been detected in astrophysical environments. In this work, the stability of the disulfide bond towards double ionization is investigated using quantum chemical calculations an
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=pmid________::049017beff53099a69985f3433983267
https://pubmed.ncbi.nlm.nih.gov/35515687
https://pubmed.ncbi.nlm.nih.gov/35515687
Autor:
Marco Antonio Chaer Nascimento, G. G. B. de Souza, L. H. Coutinho, R. B. Bernini, Lautaro Javier Ramírez Varas, Felipe Fantuzzi
Publikováno v:
RSC Advances, vol.10(58), pp.35039-35048
Kérwá
Universidad de Costa Rica
instacron:UCR
Kérwá
Universidad de Costa Rica
instacron:UCR
Disulfide bonds (–S–S–) are commonly present in biomolecules and have also been detected in astrophysical environments. In this work, the stability of the disulfide bond towards double ionization is investigated using quantum chemical calculati
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a6e175fdb9647932e110f847b2d90436
https://pubs.rsc.org/en/content/articlelanding/2020/RA/D0RA05979J#!divAbstract
https://pubs.rsc.org/en/content/articlelanding/2020/RA/D0RA05979J#!divAbstract
Autor:
C. E. V. de Moura, Alexandre B. Rocha, Lautaro Javier Ramírez Varas, R. B. Bernini, Angélica Moreno Betancourt, G. G. B. de Souza, L. H. Coutinho
Publikováno v:
RSC Adv., 2017, 7, 36525–36532 | 36525
Kérwá
Universidad de Costa Rica
instacron:UCR
Kérwá
Universidad de Costa Rica
instacron:UCR
In order to study the stability of the disulfide chemical bond in molecules subjected to a flux of high energy photons, the ionic fragmentation of two molecules containing a disulfide chemical bond, dimethyl disulfide (DMDS) and methyl propyl disulfi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::996dd3f348225a7d42eaebd9d230a706
https://doi.org/10.1039/c7ra05001a
https://doi.org/10.1039/c7ra05001a
Publikováno v:
The Journal of Chemical Physics. 153:074305
The ratios of single, double, and triple ionizations to the total photoionization of the halothane (C2HBrClF3) molecule have been investigated by a single-photon ionization in the energy range from 21.21 eV to 320 eV. In the valence region, the multi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5d8e320106570df5048b489aa9df9769
https://doi.org/10.1063/5.0018248
https://doi.org/10.1063/5.0018248
Publikováno v:
The Journal of chemical physics. 148(4)
We have studied the interaction of an ion beam (17.6 keV F-) with cystine, a dimer formed by the binding of two cysteine residues. Cystine can be considered as an ideal prototype for the study of the relevance of the disulfide (-S-S-) chemical bond i
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b241b0fc0d48eb86c4200478cdceb88c
https://pubmed.ncbi.nlm.nih.gov/29390842
https://pubmed.ncbi.nlm.nih.gov/29390842
Autor:
G. G. B. de Souza, F.C. Pontes, A. C. F. Santos, L. H. Coutinho, Lautaro Javier Ramírez Varas
Publikováno v:
Rapid Communications in Mass Spectrometry. 29:1571-1576
Rationale The ion-ion-coincidence mass spectroscopy technique brings useful information about the fragmentation dynamics of doubly and multiply charged ionic species. We advocate the use of a matrix-parameter methodology in order to represent and int
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::aa395e6531647fc09ff2f6fb6a30ba54
https://doi.org/10.1002/rcm.7257
https://doi.org/10.1002/rcm.7257
Autor:
M. O. Silva-Moraes, Alexsandre F. Lago, A. C. F. Santos, R. B. de Castilho, G. G. B. de Souza, Cecilia Veronica Nunez, Sergio Pilling, Teodorico C. Ramalho, L. H. Coutinho
Publikováno v:
Rapid Communications in Mass Spectrometry. 28:1769-1776
RATIONALE An interesting class of volatile compounds, the monoterpenes, is present in some plants although their functions are not yet fully understood. We have studied the interaction of the camphor molecule with monochromatic high-energy photons (s
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8f4ed9a455c385af5a5d1c4f82efb644
https://doi.org/10.1002/rcm.6961
https://doi.org/10.1002/rcm.6961
Publikováno v:
Journal of Electron Spectroscopy and Related Phenomena. 193:21-26
We have performed a NEXAFS (S 1s) and mass spectrometry study of solid samples of cysteine, cystine and insulin irradiated with 0.8 keV electrons. The measured mass spectra point out to processes of desulfurization, deamination, decarbonylation and d
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fc9187357676aebeeb4147d26479e429
https://doi.org/10.1016/j.elspec.2014.02.002
https://doi.org/10.1016/j.elspec.2014.02.002
Autor:
M. O. Silva-Moraes, Alexsandre F. Lago, L. H. Coutinho, Sergio Pilling, Cecilia Veronica Nunez, G. G. B. de Souza, R. B. de Castilho, C.A. Lucas, A. C. F. Santos
Publikováno v:
Journal of Electron Spectroscopy and Related Phenomena. 192:61-68
The electronic excitation and associated ionic dissociation of the carvone molecule have been studied around the oxygen 1s edge, using synchrotron radiation and time-of-flight techniques. Photoabsorption spectrum (total ion yield) and mass spectra ha
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::252f11e72ab259bdb6a423fd9f83f72a
https://doi.org/10.1016/j.elspec.2014.01.015
https://doi.org/10.1016/j.elspec.2014.01.015