Zobrazeno 1 - 10
of 17
pro vyhledávání: '"Susana Osuna-Esteban"'
Autor:
María-Paz Zorzano, Susana Osuna-Esteban, Marta Ruiz-Bermejo, Cesar Menor-Salván, Sabino Veintemillas-Verdaguer
Publikováno v:
Challenges, Vol 5, Iss 1, Pp 175-192 (2014)
We study the bias induced by a weak (200 mT) external magnetic field on the preferred handedness of sodium chlorate crystals obtained by slow evaporation at ambient conditions of its saturated saline solution with 20 ppm of added racemic (dl) hydroph
Externí odkaz:
https://doaj.org/article/999079fbdeb84095a9959d030649f21c
Publikováno v:
Life, Vol 3, Iss 3, Pp 421-448 (2013)
Hydrogen cyanide (HCN) is a ubiquitous molecule in the Universe. It is a compound that is easily produced in significant yields in prebiotic simulation experiments using a reducing atmosphere. HCN can spontaneously polymerise under a wide set of expe
Externí odkaz:
https://doaj.org/article/867f70548d82459fac64fe9a49b118c5
Autor:
Susana Osuna-Esteban, Sabino Veintemillas-Verdaguer, César Menor-Salván, Marí a-Paz Zorzano, Marta Ruiz-Bermejo
Publikováno v:
Challenges, Vol 5, Iss 1, Pp 175-192 (2014)
Digital.CSIC. Repositorio Institucional del CSIC
instname
Challenges
Volume 5
Issue 1
Pages 175-192
Digital.CSIC. Repositorio Institucional del CSIC
instname
Challenges
Volume 5
Issue 1
Pages 175-192
We study the bias induced by a weak (200 mT) external magnetic field on the preferred handedness of sodium chlorate crystals obtained by slow evaporation at ambient conditions of its saturated saline solution with 20 ppm of added racemic (dl) hydroph
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b510f69407591094262a1af7de618de5
http://www.mdpi.com/2078-1547/5/1/175
http://www.mdpi.com/2078-1547/5/1/175
Publikováno v:
Origins of Life and Evolution of Biospheres. 43:191-206
We investigated the synthesis of α-amino acids under possible prebiotic terrestrial conditions in the presence of dissolved iron (II) in a simulated prebiotic ocean. An aerosol-liquid cycle with a prebiotic atmosphere is shown to produce amino acids
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9b85f4ee19a284bbb5b55ac495f28441
https://doi.org/10.1007/s11084-013-9336-3
https://doi.org/10.1007/s11084-013-9336-3
Publikováno v:
Journal of Thermal Analysis and Calorimetry. 111:1699-1706
This study presents the thermogravimetry (TG) of hydrophobic tholins, obtained from different simulation experiments of prebiotic synthesis carried out in a CH4/N2/H2 atmosphere with spark discharge activation of aqueous aerosols and liquid water. Di
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f5db6a32f97567db47f11888420e621c
https://doi.org/10.1007/s10973-011-2141-1
https://doi.org/10.1007/s10973-011-2141-1
Autor:
José A. Martín-Gago, José Luis de la Fuente, César Menor-Salván, Celia Rogero, Marta Ruiz-Bermejo, Susana Osuna-Esteban
Publikováno v:
Chemistry & Biodiversity. 9:25-40
The data presented here provide a novel contribution to the understanding of the structural features of HCN polymers and could be useful in further development of models for prebiotic chemistry. The interpretation of spectroscopic and analytical data
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1a7293fb999a6ca1f414eb923b52abc6
https://doi.org/10.1002/cbdv.201100036
https://doi.org/10.1002/cbdv.201100036
Publikováno v:
Polymer Degradation and Stability. 96:943-948
This paper presents a thermogravimetry (TG) study of hydrogen cyanide polymers, synthesized from the reaction of equimolar aqueous solutions of sodium cyanide and ammonium chloride. Differential thermal analysis (DTA) and differential scanning calori
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::89cb8717a645700f24264a1d26aea35f
https://doi.org/10.1016/j.polymdegradstab.2011.01.033
https://doi.org/10.1016/j.polymdegradstab.2011.01.033
Publikováno v:
Origins of Life and Evolution of Biospheres. 41:331-345
Clasically, prebiotic chemistry has focused on the production and identification of simple organic molecules, many of them forming part of "intractable polymers" named tholins. In a previous work, we demonstrated that in experiments using an external
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::df8289682f44715a8a59b90192c85d61
https://doi.org/10.1007/s11084-010-9232-z
https://doi.org/10.1007/s11084-010-9232-z
Autor:
José A. Martín-Gago, Marta Ruiz-Bermejo, Eva Mateo-Martí, José Luis de la Fuente, Susana Osuna-Esteban, Sabino Veintemillas-Verdaguer, César Menor-Salván
Publikováno v:
Icarus. 204:672-680
Two different simulation experiments of prebiotic synthesis were carried out in a CH 4 /N 2 /H 2 atmosphere with spark discharge activation of aqueous aerosols and liquid water. In both cases, a hydrophilic tholin and a hydrophobic tholin were obtain
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f3768fd4856503275c2159dd4884ba10
https://doi.org/10.1016/j.icarus.2009.07.001
https://doi.org/10.1016/j.icarus.2009.07.001
Autor:
Marta Ruiz-Bermejo, Susana Osuna-Esteban, Sabino Veintemillas-Verdaguer, Celia Rogero, César Menor-Salván, José A. Martín-Gago
Publikováno v:
Chemistry & Biodiversity. 6:1309-1322
The complex salt named Prussian Blue, Fe4[Fe(CN)6]3 x 15 H2O, can release cyanide at pH > 10. From the point of view of the origin of life, this fact is of interest, since the oligomers of HCN, formed in the presence of ammonium or amines, leads to a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2d522a58c746cd9a8d10ae8927b10f39
https://doi.org/10.1002/cbdv.200900024
https://doi.org/10.1002/cbdv.200900024