Photostability of gas- and solid-phase biomolecules under astrophysical analog soft X-rays field
| Autor(a) principal: | |
|---|---|
| Data de Publicação: | 2009 |
| Outros Autores: | , , , , , , , , |
| Tipo de documento: | Artigo |
| Idioma: | eng |
| Título da fonte: | Repositório Institucional da UFBA |
| Texto Completo: | http://www.repositorio.ufba.br/ri/handle/ri/4995 |
Resumo: | p. 440-441 |
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Marinho, Ricardo dos Reis TeixeiraOliveira, Sergio Pilling Guapyassu deOliveira, Diana Paula Andrade Pilling Guapyassú deBoechat-Roberty, Heloisa MariaCastilho, Roberto Barbosa deSouza, Gerardo Gerson Bezerra deCoutinho, Lúcia HelenaLago, Alexsandre FigueiredoCavasso Filho, Reinaldo LuizNascimento, E. M.Marinho, Ricardo dos Reis TeixeiraOliveira, Sergio Pilling Guapyassu deOliveira, Diana Paula Andrade Pilling Guapyassú deBoechat-Roberty, Heloisa MariaCastilho, Roberto Barbosa deSouza, Gerardo Gerson Bezerra deCoutinho, Lúcia HelenaLago, Alexsandre FigueiredoCavasso Filho, Reinaldo LuizNascimento, E. M.2012-01-02T12:34:19Z2012-01-02T12:34:19Z20091743-9221http://www.repositorio.ufba.br/ri/handle/ri/4995v. 265p. 440-441We 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 enough to be observed or even to be found in meteorites. Measurements have been undertaken employing 150 eV photons under high vacuum conditions at the Brazilian Synchrotron Light Laboratory (LNLS). The produced ions from the gas-phase experiments (glycine, adenine and uracil) have been mass/charge analyzed by time-of-flight spectrometer. The analysis of solid phase samples (glycine, DL-proline, DL-valine, adenine and uracil) were performed by a Fourier transform infrared spectrometer coupled to the experimental chamber. Photodissociation cross sections and halflives were determined and extrapolated to astrophysical environments. The nucleobases photostability was up to two orders of magnitude higher than for the amino acids.Submitted by Ana Valéria de Jesus Moura (anavaleria_131@hotmail.com) on 2012-01-02T12:34:19Z No. of bitstreams: 1 download.pdf: 153630 bytes, checksum: 17700feab984d7336a3879fb2c728861 (MD5)Made available in DSpace on 2012-01-02T12:34:19Z (GMT). No. of bitstreams: 1 download.pdf: 153630 bytes, checksum: 17700feab984d7336a3879fb2c728861 (MD5) Previous issue date: 2009http://journals.cambridge.org/action/displayAbstract?fromPage=online&aid=7326500reponame:Repositório Institucional da UFBAinstname:Universidade Federal da Bahia (UFBA)instacron:UFBAastrochemistryastrobiologymolecular processesmolecular datamethods: laboratoryISM: cloudsX-rays: ISMPhotostability of gas- and solid-phase biomolecules under astrophysical analog soft X-rays fieldProceedings of the International Astronomical Unioninfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleenginfo:eu-repo/semantics/openAccessORIGINALdownload.pdfdownload.pdfapplication/pdf153630https://repositorio.ufba.br/bitstream/ri/4995/1/download.pdf17700feab984d7336a3879fb2c728861MD51LICENSElicense.txtlicense.txttext/plain1762https://repositorio.ufba.br/bitstream/ri/4995/2/license.txt1b89a9a0548218172d7c829f87a0eab9MD52TEXTdownload.pdf.txtdownload.pdf.txtExtracted texttext/plain5690https://repositorio.ufba.br/bitstream/ri/4995/3/download.pdf.txt245023ffe83d7ad28ba2abd7204cc12aMD53ri/49952022-07-05 14:03:14.856oai:repositorio.ufba.br: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Repositório InstitucionalPUBhttp://192.188.11.11:8080/oai/requestopendoar:19322022-07-05T17:03:14Repositório Institucional da UFBA - Universidade Federal da Bahia (UFBA)false |
| dc.title.pt_BR.fl_str_mv |
Photostability of gas- and solid-phase biomolecules under astrophysical analog soft X-rays field |
| dc.title.alternative.pt_BR.fl_str_mv |
Proceedings of the International Astronomical Union |
| title |
Photostability of gas- and solid-phase biomolecules under astrophysical analog soft X-rays field |
| spellingShingle |
Photostability of gas- and solid-phase biomolecules under astrophysical analog soft X-rays field Marinho, Ricardo dos Reis Teixeira astrochemistry astrobiology molecular processes molecular data methods: laboratory ISM: clouds X-rays: ISM |
| title_short |
Photostability of gas- and solid-phase biomolecules under astrophysical analog soft X-rays field |
| title_full |
Photostability of gas- and solid-phase biomolecules under astrophysical analog soft X-rays field |
| title_fullStr |
Photostability of gas- and solid-phase biomolecules under astrophysical analog soft X-rays field |
| title_full_unstemmed |
Photostability of gas- and solid-phase biomolecules under astrophysical analog soft X-rays field |
| title_sort |
Photostability of gas- and solid-phase biomolecules under astrophysical analog soft X-rays field |
| author |
Marinho, Ricardo dos Reis Teixeira |
| author_facet |
Marinho, Ricardo dos Reis Teixeira Oliveira, Sergio Pilling Guapyassu de Oliveira, Diana Paula Andrade Pilling Guapyassú de Boechat-Roberty, Heloisa Maria Castilho, Roberto Barbosa de Souza, Gerardo Gerson Bezerra de Coutinho, Lúcia Helena Lago, Alexsandre Figueiredo Cavasso Filho, Reinaldo Luiz Nascimento, E. M. |
| author_role |
author |
| author2 |
Oliveira, Sergio Pilling Guapyassu de Oliveira, Diana Paula Andrade Pilling Guapyassú de Boechat-Roberty, Heloisa Maria Castilho, Roberto Barbosa de Souza, Gerardo Gerson Bezerra de Coutinho, Lúcia Helena Lago, Alexsandre Figueiredo Cavasso Filho, Reinaldo Luiz Nascimento, E. M. |
| author2_role |
author author author author author author author author author |
| dc.contributor.author.fl_str_mv |
Marinho, Ricardo dos Reis Teixeira Oliveira, Sergio Pilling Guapyassu de Oliveira, Diana Paula Andrade Pilling Guapyassú de Boechat-Roberty, Heloisa Maria Castilho, Roberto Barbosa de Souza, Gerardo Gerson Bezerra de Coutinho, Lúcia Helena Lago, Alexsandre Figueiredo Cavasso Filho, Reinaldo Luiz Nascimento, E. M. Marinho, Ricardo dos Reis Teixeira Oliveira, Sergio Pilling Guapyassu de Oliveira, Diana Paula Andrade Pilling Guapyassú de Boechat-Roberty, Heloisa Maria Castilho, Roberto Barbosa de Souza, Gerardo Gerson Bezerra de Coutinho, Lúcia Helena Lago, Alexsandre Figueiredo Cavasso Filho, Reinaldo Luiz Nascimento, E. M. |
| dc.subject.por.fl_str_mv |
astrochemistry astrobiology molecular processes molecular data methods: laboratory ISM: clouds X-rays: ISM |
| topic |
astrochemistry astrobiology molecular processes molecular data methods: laboratory ISM: clouds X-rays: ISM |
| description |
p. 440-441 |
| publishDate |
2009 |
| dc.date.issued.fl_str_mv |
2009 |
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2012-01-02T12:34:19Z |
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2012-01-02T12:34:19Z |
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info:eu-repo/semantics/publishedVersion |
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info:eu-repo/semantics/article |
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http://www.repositorio.ufba.br/ri/handle/ri/4995 |
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1743-9221 |
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v. 265 |
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1743-9221 v. 265 |
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http://www.repositorio.ufba.br/ri/handle/ri/4995 |
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eng |
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