Results 71 to 80 of about 1,909 (161)

Iridescence Reveals the Formation and Growth of Ice Aerosols in Martian Noctilucent Clouds

Geophysical Research Letters, Volume 51, Issue 23, 16 December 2024.
Abstract Water and carbon dioxide each form mesospheric clouds on Mars. At such altitudes (40–100 km), clouds may remain sunlit for part of the night. We describe a previously unreported, visually spectacular season of iridescent, noctilucent clouds visible in early southern autumn from the Curiosity rover's site in Gale crater.
M. T. Lemmon, A. Vicente‐Retortillo, S. D. Guzewich, M. de la Torre Juárez, A. C. Innanen, C. L. Campbell, J. N. Maki, M. C. Malin, J. E. Moores   +8 more
wiley   +1 more source

Polyommatus (Agrodiaetus) fabressei (Oberthür, 1910) y P. (A.) ripartii (Freyer, 1830) en el centro de la Península Ibérica, Guadalajara (España). Distribución geográfica y aspectos de su morfología, ecología y biología (Lepidoptera: Lycaenidae)

SHILAP, 2019
Mediante el análisis del marcador genético COXI, estudiamos la presencia y distribución de Polyommatus (Agrodiaetus) fabressei (Oberthur, 1910) y P. (A.) ripartii (Freyer, 1830) en la provincia de Guadalajara, centro de la Península Ibérica.
R. Pérez-Fernández, N. Rodríguez, M. Postigo   +2 more
doaj   +1 more source

SETI e a Grande História: Desafio e Extensão

Journal of Big History, 2020
SETI é um dos relevantes desafios ao arcabouço da Grande História, e que expande seus propósitos. A Grande História tem exercido impacto similar sobre a história mundial, da mesma forma que as histórias nacionais impactaram as histórias religiosas.
Lowell Gustafson
doaj   +1 more source

Fórmulas de cambio : congreso de astrobiología.

, 2016
Multimedia en formato .mp4El III Congreso de Astrobiología realizado en la ciudad de Manizales, convocó en el 2016 a la comunidad científica y académica de Colombia y el mundo, siendo el escenario perfecto para conocer de qué se trata esta disciplina y ...
Grajales, Diana, López, Juan Fernando, Ladrón de Guevara, Juliana, Lara, Johana   +3 more
core   +1 more source

An oligonucleotide prokaryotic acidophile microarray: its validation and its use to monitor seasonal variations in extreme acidic environments with total environmental RNA

, 2008
© 2008 The Authors.An oligonucleotide microarray that monitors prokaryotic diversity in extremely acidic environments has been developed. The oligonucleotide probes target most known acidophilic microorganisms, including members of the Nitrospira phylum,
Víctor Parro, Mercedes Moreno‐Paz, García-Moyano, Antonio, Moreno-Paz, Mercedes, Antonio García‐Moyano, Ricardo Amils, Patricia Garrido, González-Toril, Elena, Amils, Ricardo, Garrido, Patricia, Parro-García, Víctor, Elena González‐Toril   +11 more
core   +1 more source

Un nuevo referente en investigación multidisciplinar: El Centro de Astrobiología

, 2003
La Astrobiología es una nueva ciencia que surge de la necesidad de investigar el origen, presencia e influencia de la vida en el Universo. Hace suyas viejas preguntas; por ejemplo: ¿Cómo surgió la vida sobre la Tierra?
Equipo de Encuentros Multidisciplinares
core  

Modeling the UV-photon irradiation of CS2-bearing ices in the laboratory with the pyRate gas-grain astrochemical code

Astronomy & Astrophysics
Observations indicate that the total abundance of S-bearing species in dense clouds is orders of magnitude lower than the cosmic sulfur abundance. Addressing this “missing sulfur problem” requires a combination of astronomical observations, laboratory ...
Sipilä O., Martín-Doménech R., Riedel W., Navarro-Almaida D., Fuente A., Taillard A., Muñoz Caro G. M.   +6 more
doaj   +1 more source

Synthesis of the first nitrogen-heterocycles in interstellar ice analogues containing methylamine (CH3NH2) exposed to UV radiation: formation of trimethylentriamine (TMT, c-(-CH2-NH)3) and hexamethylentetramine (HMT, (CH2)6N4)

, 2022
Hexamethylentetramine has drawn a lot of attention due to its potential to produce prebiotic species. This work aims to gain a better understanding in the chemical processes concerning methylamine under astrophysically relevant conditions. In particular,
Carrascosa, H., González Díaz, C., Sanz, M. Luz, Muñoz Caro, G.M., Gómez P. C.   +4 more
core   +1 more source

The dusty envelopes of asymptotic giant branch stars with ultraviolet excesses

Astronomy & Astrophysics
Context. Roughly spherical envelopes around asymptotic giant branch (AGB) stars transform into the highly asymmetric morphologies observed in planetary nebulae.
Alonso-Hernández J., Sánchez Contreras C., Sahai R., Sanz-Forcada J.   +3 more
doaj   +1 more source

Analysis of environmental transcriptomes by DNA microarrays

, 2007
12 pages, 4 figures, 1 table.-- ISI Article Identifier: 000243376800017.-- Available online Oct 25, 2006.GenBank accession numbers for more than 100 000 nt of new sequences: DQ785317–DQ785468.Supporting information (Suppl.
Víctor Parro, Moreno-Paz, Mercedes, Mercedes Moreno‐Paz, González-Toril, Elena, Parro-García, Víctor, Elena González‐Toril   +5 more
core   +1 more source