Catálogo de publicaciones - revistas
Science
Resumen/Descripción – provisto por la editorial
No disponible.
Palabras clave – provistas por la editorial
No disponibles.
Disponibilidad
| Institución detectada | Período | Navegá | Descargá | Solicitá |
|---|---|---|---|---|
| No detectada | desde mar. 1997 / hasta dic. 2023 | Science Journals |
Información
Tipo de recurso:
revistas
ISSN impreso
0036-8075
ISSN electrónico
1095-9203
Editor responsable
American Association for the Advancement of Science (AAAS)
País de edición
Estados Unidos
Fecha de publicación
1880-
Cobertura temática
Tabla de contenidos
The organic-rich surface of comet 67P/Churyumov-Gerasimenko as seen by VIRTIS/Rosetta
F. Capaccioni; A. Coradini; G. Filacchione; S. Erard; G. Arnold; P. Drossart; M. C. De Sanctis; D. Bockelee-Morvan; M. T. Capria; F. Tosi; C. Leyrat; B. Schmitt; E. Quirico; P. Cerroni; V. Mennella; A. Raponi; M. Ciarniello; T. McCord; L. Moroz; E. Palomba; E. Ammannito; M. A. Barucci; G. Bellucci; J. Benkhoff; J. P. Bibring; A. Blanco; M. Blecka; R. Carlson; U. Carsenty; L. Colangeli; M. Combes; M. Combi; J. Crovisier; T. Encrenaz; C. Federico; U. Fink; S. Fonti; W. H. Ip; P. Irwin; R. Jaumann; E. Kuehrt; Y. Langevin; G. Magni; S. Mottola; V. Orofino; P. Palumbo; G. Piccioni; U. Schade; F. Taylor; D. Tiphene; G. P. Tozzi; P. Beck; N. Biver; L. Bonal; J.-Ph. Combe; D. Despan; E. Flamini; S. Fornasier; A. Frigeri; D. Grassi; M. Gudipati; A. Longobardo; K. Markus; F. Merlin; R. Orosei; G. Rinaldi; K. Stephan; M. Cartacci; A. Cicchetti; S. Giuppi; Y. Hello; F. Henry; S. Jacquinod; R. Noschese; G. Peter; R. Politi; J. M. Reess; A. Semery
<jats:p> The VIRTIS (Visible, Infrared and Thermal Imaging Spectrometer) instrument on board the Rosetta spacecraft has provided evidence of carbon-bearing compounds on the nucleus of the comet 67P/Churyumov-Gerasimenko. The very low reflectance of the nucleus (normal albedo of 0.060 ± 0.003 at 0.55 micrometers), the spectral slopes in visible and infrared ranges (5 to 25 and 1.5 to 5% kÅ <jats:sup>−1</jats:sup> ), and the broad absorption feature in the 2.9-to-3.6–micrometer range present across the entire illuminated surface are compatible with opaque minerals associated with nonvolatile organic macromolecular materials: a complex mixture of various types of carbon-hydrogen and/or oxygen-hydrogen chemical groups, with little contribution of nitrogen-hydrogen groups. In active areas, the changes in spectral slope and absorption feature width may suggest small amounts of water-ice. However, no ice-rich patches are observed, indicating a generally dehydrated nature for the surface currently illuminated by the Sun. </jats:p>
Palabras clave: Multidisciplinary.
Pp. No disponible
Time variability and heterogeneity in the coma of 67P/Churyumov-Gerasimenko
M. Hässig; K. Altwegg; H. Balsiger; A. Bar-Nun; J. J. Berthelier; A. Bieler; P. Bochsler; C. Briois; U. Calmonte; M. Combi; J. De Keyser; P. Eberhardt; B. Fiethe; S. A. Fuselier; M. Galand; S. Gasc; T. I. Gombosi; K. C. Hansen; A. Jäckel; H. U. Keller; E. Kopp; A. Korth; E. Kührt; L. Le Roy; U. Mall; B. Marty; O. Mousis; E. Neefs; T. Owen; H. Rème; M. Rubin; T. Sémon; C. Tornow; C.-Y. Tzou; J. H. Waite; P. Wurz
<jats:p>Comets contain the best-preserved material from the beginning of our planetary system. Their nuclei and comae composition reveal clues about physical and chemical conditions during the early solar system when comets formed. ROSINA (Rosetta Orbiter Spectrometer for Ion and Neutral Analysis) onboard the Rosetta spacecraft has measured the coma composition of comet 67P/Churyumov-Gerasimenko with well-sampled time resolution per rotation. Measurements were made over many comet rotation periods and a wide range of latitudes. These measurements show large fluctuations in composition in a heterogeneous coma that has diurnal and possibly seasonal variations in the major outgassing species: water, carbon monoxide, and carbon dioxide. These results indicate a complex coma-nucleus relationship where seasonal variations may be driven by temperature differences just below the comet surface.</jats:p>
Palabras clave: Multidisciplinary.
Pp. No disponible
The morphological diversity of comet 67P/Churyumov-Gerasimenko
Nicolas Thomas; Holger Sierks; Cesare Barbieri; Philippe L. Lamy; Rafael Rodrigo; Hans Rickman; Detlef Koschny; Horst Uwe Keller; Jessica Agarwal; Michael F. A'Hearn; Francesco Angrilli; Anne-Therese Auger; M. Antonella Barucci; Jean-Loup Bertaux; Ivano Bertini; Sebastien Besse; Dennis Bodewits; Gabriele Cremonese; Vania Da Deppo; Björn Davidsson; Mariolino De Cecco; Stefano Debei; Mohamed Ramy El-Maarry; Francesca Ferri; Sonia Fornasier; Marco Fulle; Lorenza Giacomini; Olivier Groussin; Pedro J. Gutierrez; Carsten Güttler; Stubbe F. Hviid; Wing-Huen Ip; Laurent Jorda; Jörg Knollenberg; J.-Rainer Kramm; Ekkehard Kührt; Michael Küppers; Fiorangela La Forgia; Luisa M. Lara; Monica Lazzarin; Josè J. Lopez Moreno; Sara Magrin; Simone Marchi; Francesco Marzari; Matteo Massironi; Harald Michalik; Richard Moissl; Stefano Mottola; Giampiero Naletto; Nilda Oklay; Maurizio Pajola; Antoine Pommerol; Frank Preusker; Lola Sabau; Frank Scholten; Colin Snodgrass; Cecilia Tubiana; Jean-Baptiste Vincent; Klaus-Peter Wenzel
<jats:p>Images of comet 67P/Churyumov-Gerasimenko acquired by the OSIRIS (Optical, Spectroscopic and Infrared Remote Imaging System) imaging system onboard the European Space Agency’s Rosetta spacecraft at scales of better than 0.8 meter per pixel show a wide variety of different structures and textures. The data show the importance of airfall, surface dust transport, mass wasting, and insolation weathering for cometary surface evolution, and they offer some support for subsurface fluidization models and mass loss through the ejection of large chunks of material.</jats:p>
Palabras clave: Multidisciplinary.
Pp. No disponible
Tissue-based map of the human proteome
Mathias Uhlén; Linn Fagerberg; Björn M. Hallström; Cecilia Lindskog; Per Oksvold; Adil Mardinoglu; Åsa Sivertsson; Caroline Kampf; Evelina Sjöstedt; Anna Asplund; IngMarie Olsson; Karolina Edlund; Emma Lundberg; Sanjay Navani; Cristina Al-Khalili Szigyarto; Jacob Odeberg; Dijana Djureinovic; Jenny Ottosson Takanen; Sophia Hober; Tove Alm; Per-Henrik Edqvist; Holger Berling; Hanna Tegel; Jan Mulder; Johan Rockberg; Peter Nilsson; Jochen M. Schwenk; Marica Hamsten; Kalle von Feilitzen; Mattias Forsberg; Lukas Persson; Fredric Johansson; Martin Zwahlen; Gunnar von Heijne; Jens Nielsen; Fredrik Pontén
<jats:title>Protein expression across human tissues</jats:title> <jats:p> Sequencing the human genome gave new insights into human biology and disease. However, the ultimate goal is to understand the dynamic expression of each of the approximately 20,000 protein-coding genes and the function of each protein. Uhlén <jats:italic>et al.</jats:italic> now present a map of protein expression across 32 human tissues. They not only measured expression at an RNA level, but also used antibody profiling to precisely localize the corresponding proteins. An interactive website allows exploration of expression patterns across the human body. </jats:p> <jats:p> <jats:italic>Science</jats:italic> , this issue <jats:related-article xmlns:xlink="http://www.w3.org/1999/xlink" ext-link-type="doi" related-article-type="in-this-issue" xlink:href="10.1126/science.1260419">10.1126/science.1260419</jats:related-article> </jats:p>
Palabras clave: Multidisciplinary.
Pp. No disponible
A binding partner for an orphan receptor
J. D. Berndt
Palabras clave: Multidisciplinary.
Pp. i-385
Rethink the Nicaragua Canal
Jorge A. Huete-Perez; Axel Meyer; Pedro J. Alvarez
<jats:p>At the end of 2014, construction began on the Grand Canal in Nicaragua, a project shrouded in secrecy since its inception 2.5 years ago. The Nicaraguan government showed scant evidence of having accounted for the impact on the environment and on local residents, or of having adequately consulted the public in selecting the final 278-km route. Such disregard should be alarming to everyone. Projects of this magnitude warrant dialogue among all stakeholders. As construction is projected to span 5 years, there is still time to reconsider it and convene independent assessments and meetings that are transparent, inclusive, and respectful of different perspectives, to guide the project toward the best outcome.</jats:p>
Palabras clave: Multidisciplinary.
Pp. 355-355
This week's section
<jats:p>A roundup of weekly science policy and related news.</jats:p>
Palabras clave: Multidisciplinary.
Pp. 356-357
Comet close-up reveals a world of surprises
Eric Hand
<jats:p>Diverse landscape of 67P suggests an unexpectedly complicated origin.</jats:p>
Palabras clave: Multidisciplinary.
Pp. 358-359
Surveys reveal state of Afghan population
Mara Hvistendahl
<jats:p>From fertility to mortality, new data will help guide aid efforts.</jats:p>
Palabras clave: Multidisciplinary.
Pp. 359-360
Japan's nuclear renaissance dogged by waste challenge
Dennis Normile
<jats:p>Nuclear reprocessing is years late; repository is in limbo.</jats:p>
Palabras clave: Multidisciplinary.
Pp. 361-361