Zobrazeno 1 - 9 of 9 pro vyhledávání: '"R B, de Castilho"'
1
Single and double ionization of the camphor molecule excited around the C 1s edge
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
Zobrazit plný text záznamu
2
Excitation and ionic fragmentation of the carvone molecule (C10H14O) around the O 1s edge
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
Zobrazit plný text záznamu
3
Photostability of gas- and solid-phase biomolecules within dense molecular clouds due to soft X-rays
Autor: R. B. de Castilho, L. H. de Coutinho, R. L. Cavasso-Filho, Alexsandre F. Lago, R. R. T. Marinho, Diana P. P. Andrade, G. G. B. de Souza, Heloisa M. Boechat-Roberty, Sergio Pilling, E. M. do Nascimento, A. N. de Brito
Publikováno v: Monthly Notices of the Royal Astronomical Society. 411:2214-2222
An experimental photochemistry study involving gas- and solid-phase amino acids (glycine, DL-valine, DL-proline) and nucleobases (adenine and uracil) under soft X-rays was performed. The aim was to test the molecular stabilities of essential biomolec
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::df3631690d4acb9096f4ca9eb80837c0
https://doi.org/10.1111/j.1365-2966.2010.17840.x
Zobrazit plný text záznamu
4
Survival of gas phase amino acids and nucleobases in space radiation conditions
Autor: Diana P. P. Andrade, L. H. Coutinho, A. Naves de Brito, G. G. B. de Souza, Alexsandre F. Lago, Sergio Pilling, R. B. de Castilho, Heloisa M. Boechat-Roberty, R. L. Cavasso-Filho
Publikováno v: Proceedings of the International Astronomical Union. 4:371-376
We present experimental studies on the photoionization and photodissociation processes (photodestruction) of gaseous amino acids and nucleobases in interstellar and interplanetary radiation conditions analogs. The measurements have been undertaken at
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::03c26cb06f7a64a73dc140e302181b08
https://doi.org/10.1017/s1743921308021996
Zobrazit plný text záznamu
5
Dissociative photoionization of adenine following valence excitation
Autor: Sergio Pilling, G. G. B. de Souza, A. Naves de Brito, Alexsandre F. Lago, L. H. Coutinho, R. B. de Castilho
Publikováno v: Rapid Communications in Mass Spectrometry. 21:3646-3652
We present results on the valence level excitation, ionization and dissociation of adenine, using time-of-flight mass spectrometry and synchrotron radiation, in the vacuum ultraviolet (VUV) range of 12-21 eV. The measurements were performed using a g
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3208d131da889a7ddd5cf3af961870d8
https://doi.org/10.1002/rcm.3259
Zobrazit plný text záznamu
8
Single and double ionization of the camphor molecule excited around the C 1s edge
Autor: R B, de Castilho, T C, Ramalho, C V, Nunez, L H, Coutinho, A C F, Santos, S, Pilling, A F, Lago, M O, Silva-Moraes, G G B, de Souza
Publikováno v: Rapid communications in mass spectrometry : RCM. 28(15)
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 (synchrotron
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=pmid________::02b2032f1300aaa2e744d3a1bf127e91
https://pubmed.ncbi.nlm.nih.gov/24975258
Zobrazit plný text záznamu
9
Photostability of gas- and solid-phase biomolecules under astrophysical analog soft X-rays field
Autor: G. G. B. de Souza, L. H. Coutinho, A. N. de Brito, Diana P. P. Andrade, R. B. de Castilho, Alexsandre F. Lago, E. M. do Nascimento, R. T. Marinho, Heloisa M. Boechat-Roberty, R. L. Cavasso-Filho, Sergio Pilling
Publikováno v: Proceedings of the International Astronomical Union. 5:440-441
We present experimental studies on the interaction of soft X-rays on gas-phase and solid-phase amino acids and nucleobases in an attempt to verify if these molecules (supposed to be formed in molecular clouds/protostellar clouds) can survive long eno
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::b99029b24208195529993462c2c0dad3
https://doi.org/10.1017/s1743921310001225
Zobrazit plný text záznamu

Vyhledávací nástroje:

Upřesnit hledání

Omezení vyhledávání
Plný text Recenzováno Digitální knihovna AV ČR
Zdroje