Zobrazeno 1 - 10
of 151
pro vyhledávání: '"Alicia Negrón"'
Autor:
Claudio Alejandro Fuentes-Carreón, Adriana Leticia Meléndez-López, Jorge Armando Cruz-Castañeda, Alicia Negrón-Mendoza
Publikováno v:
Heliyon, Vol 10, Iss 16, Pp e36227- (2024)
Formaldehyde condensation in the presence of a mineral catalyst and under alkaline conditions is considered to be a ''messy'' chemical system due to its dependence on the complex chemical equilibrium between the reaction intermediates, which has a si
Externí odkaz:
https://doaj.org/article/b537bf0538e24f0fb0664783e3054931
Autor:
Alejandro Paredes-Arriaga, Anayelly López-Islas, Diego Frias, Ana Leonor Rivera, Guadalupe Cordero-Tercero, Sergio Ramos-Bernal, Alicia Negrón-Mendoza
Publikováno v:
PLoS ONE, Vol 19, Iss 12, p e0315409 (2024)
Formic acid is consistently produced and detected in prebiotic chemistry experiments, constituting a precursor of many carboxylic acids and amino acids. Its behavior with exposure to gamma radiation varies with the pH and solution concentration. This
Externí odkaz:
https://doaj.org/article/2397d2e780d549618b41d4ab564f3e00
Autor:
Claudio Alejandro Fuentes-Carreón, Jorge Armando Cruz-Castañeda, Eva Mateo-Martí, Alicia Negrón-Mendoza
Publikováno v:
Life, Vol 12, Iss 11, p 1818 (2022)
Researchers have suggested that the condensation of low-molecular-weight aldehydes under basic conditions (e.g., pH > 11) is the prebiotic reaction responsible for the abiotic formation of carbohydrates. It has also been suggested that surface hydrot
Externí odkaz:
https://doaj.org/article/aa54c866a4594b6ca893b5de3229a828
Autor:
João Paulo T. Baú, Daniel F. Valezi, Sául A. Villafañe-Barajas, María Colín-García, Alicia Negrón-Mendoza, Eduardo Di Mauro, Dimas A.M. Zaia
Publikováno v:
Heliyon, Vol 5, Iss 5, Pp e01584- (2019)
Solids of adenine obtained from distilled water and seawater lyophilized solutions were γ irradiated at a 94.52 kGy dose. Results indicate that pure solid adenine had a low degradation rate, likewise the solid containing seawater salts. However, EPR
Externí odkaz:
https://doaj.org/article/35483ff21cf4449ab2a86a99a343c54e
Autor:
Heredia, Alejandro, Colín-García, María, Puig, Teresa Pi i, Alba-Aldave, Leticia, Meléndez, Adriana, Cruz-Castañeda, Jorge A., Basiuk, Vladimir A., Ramos-Bernal, Sergio, Mendoza, Alicia Negrón
Publikováno v:
In BioSystems December 2017 162:66-74
Autor:
Alejandro Paredes Arriaga, Ana Leonor Rivera, Diego Frías, Sergio Ramos, Alicia Negrón Mendoza
Publikováno v:
Suplemento de la Revista Mexicana de Física. 4
The Fricke dosimeter is a widely used gamma radiation dosimetry system. The system is based on the detection of Fe2+ to Fe3+ oxidation in an aqueous solution of ferrous sulfate in sulfuric acid, exposed to ionizing radiation in the presence of oxygen
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d9314b9e34959339e7c3939e513bb84d
https://doi.org/10.31349/suplrevmexfis.4.011001
https://doi.org/10.31349/suplrevmexfis.4.011001
Autor:
D. Madrigal-Trejo, I. Mejía-Luna, R. Zamudio-Ramírez, Alejandro Heredia-Barbero, E. Chacón-Baca, P.S. Villanueva-Barragán, Alicia Negrón-Mendoza, Sergio Ramos-Bernal, K. E. Cervantes-de la Cruz
Publikováno v:
Origins of Life and Evolution of Biospheres. 51:117-130
The abiotic synthesis of histidine under experimental prebiotic conditions has proven to be chemically promising and plausible. Within this context, the present results suggest that histidine amino acid may function as a simple prebiotic catalyst abl
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::31225703554adf93ba4527998314aa29
https://doi.org/10.1007/s11084-021-09606-3
https://doi.org/10.1007/s11084-021-09606-3
Publikováno v:
International Journal of Astrobiology. 19:369-378
Hydrogen cyanide (HCN) is considered a fundamental molecule in prebiotic chemistry experiments due to the fact that it could have an important role as raw material to form more complex molecules, as well as it could be an intermediate molecule in che
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d365a69cf219d803d22f7b8225d0bf2e
https://doi.org/10.1017/s1473550420000142
https://doi.org/10.1017/s1473550420000142
Publikováno v:
Journal of Molecular Evolution. 88:284-291
On ancient Earth, environmental conditions favored prebiotic chemical reactions. In the Archean, some molecules with conjugated rings might have been synthesized, displaying structural stability in the Archean in the presence of ionizing radiation an
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f8edf92d58517da5f1e5b4270c16b5f3
https://doi.org/10.1007/s00239-020-09933-5
https://doi.org/10.1007/s00239-020-09933-5
Autor:
María Colín-García, Dimas A. M. Zaia, Antonio Carlos Saraiva da Costa, Saúl A. Villafañe-Barajas, Alicia Negrón-Mendoza, João Paulo T. Baú
Publikováno v:
Astrobiology. 20:26-38
Most adsorption and radiolysis experiments related to prebiotic chemistry studies are performed in distilled water or sodium chloride solutions. However, distilled water and sodium chloride solutions do not represent the composition of the primitive
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d071ecad5bff51130fca2719431e3538
https://doi.org/10.1089/ast.2018.1909
https://doi.org/10.1089/ast.2018.1909