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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

Cobertura temática

naturales

Ciencias naturales

Tabla de contenidos

doi: 10.1126/science.1211681

Hollows on Mercury: MESSENGER Evidence for Geologically Recent Volatile-Related Activity

David T. Blewett; Nancy L. Chabot; Brett W. Denevi; Carolyn M. Ernst; James W. Head; Noam R. Izenberg; Scott L. Murchie; Sean C. Solomon; Larry R. Nittler; Timothy J. McCoy; Zhiyong Xiao; David M. H. Baker; Caleb I. Fassett; Sarah E. Braden; Jürgen Oberst; Frank Scholten; Frank Preusker; Debra M. Hurwitz

<jats:p>Rimless shallow depressions on Mercury may still be forming by outgassing, volcanism, sublimation, or space weathering.</jats:p>

Palabras clave: Multidisciplinary.

Pp. 1856-1859

doi: 10.1126/science.1211001

The Global Magnetic Field of Mercury from MESSENGER Orbital Observations

Brian J. Anderson; Catherine L. Johnson; Haje Korth; Michael E. Purucker; Reka M. Winslow; James A. Slavin; Sean C. Solomon; Ralph L. McNutt; Jim M. Raines; Thomas H. Zurbuchen

<jats:p>Displacement of Mercury's magnetic dipole implies that the surface field has a north-south asymmetry.</jats:p>

Palabras clave: Multidisciplinary.

Pp. 1859-1862

doi: 10.1126/science.1211302

MESSENGER Observations of the Spatial Distribution of Planetary Ions Near Mercury

Thomas H. Zurbuchen; Jim M. Raines; James A. Slavin; Daniel J. Gershman; Jason A. Gilbert; George Gloeckler; Brian J. Anderson; Daniel N. Baker; Haje Korth; Stamatios M. Krimigis; Menelaos Sarantos; David Schriver; Ralph L. McNutt; Sean C. Solomon

<jats:p>The polar regions of Mercury are important sources of material for its ionized exosphere.</jats:p>

Palabras clave: Multidisciplinary.

Pp. 1862-1865

doi: 10.1126/science.1211141

MESSENGER Observations of Transient Bursts of Energetic Electrons in Mercury’s Magnetosphere

George C. Ho; Stamatios M. Krimigis; Robert E. Gold; Daniel N. Baker; James A. Slavin; Brian J. Anderson; Haje Korth; Richard D. Starr; David J. Lawrence; Ralph L. McNutt; Sean C. Solomon

<jats:p>Despite having an internal magnetic field, Mercury does not have a Van Allen–type radiation belt.</jats:p>

Palabras clave: Multidisciplinary.

Pp. 1865-1868

doi: 10.1126/science.1207957

Evidence of Water Vapor in Excess of Saturation in the Atmosphere of Mars

L. Maltagliati; F. Montmessin; A. Fedorova; O. Korablev; F. Forget; J.-L. Bertaux

<jats:p>Spacecraft observations reveal more water vapor in the atmosphere of Mars than would be expected if vapor pressure controlled the water vapor profile.</jats:p>

Palabras clave: Multidisciplinary.

Pp. 1868-1871

doi: 10.1126/science.1207060

Linking Models of Polymerization and Dynamics to Predict Branched Polymer Structure and Flow

Daniel J. Read; Dietmar Auhl; Chinmay Das; Jaap den Doelder; Michael Kapnistos; Iakovos Vittorias; Tom C. B. McLeish

<jats:p>The complex flow behavior of a branched polymer can be predicted from its chemical structure.</jats:p>

Palabras clave: Multidisciplinary.

Pp. 1871-1874

doi: 10.1126/science.1206997

Three-Dimensional Correlation of Steric and Electronic Free Energy Relationships Guides Asymmetric Propargylation

Kaid C. Harper; Matthew S. Sigman

<jats:p>An unexpected synergy between a ligand's steric bulk and its electronic structure improves a stereoselective catalyst.</jats:p>

Palabras clave: Multidisciplinary.

Pp. 1875-1878

doi: 10.1126/science.1202775

Diurnal and Seasonal Mood Vary with Work, Sleep, and Daylength Across Diverse Cultures

Scott A. Golder; Michael W. Macy

<jats:p>Across the world the collective mood heightens at breakfast time and during the weekend.</jats:p>

Palabras clave: Multidisciplinary.

Pp. 1878-1881

doi: 10.1126/science.1206022

Histone Lysine Demethylase JARID1a Activates CLOCK-BMAL1 and Influences the Circadian Clock

Luciano DiTacchio; Hiep D. Le; Christopher Vollmers; Megumi Hatori; Michael Witcher; Julie Secombe; Satchidananda Panda

<jats:p>The histone lysine demethylase JARID1a has demethylase-independent function in the circadian clock.</jats:p>

Palabras clave: Multidisciplinary.

Pp. 1881-1885

doi: 10.1126/science.1207309

Superfast Muscles Set Maximum Call Rate in Echolocating Bats

Coen P. H. Elemans; Andrew F. Mead; Lasse Jakobsen; John M. Ratcliffe

<jats:p>Superfast muscles control the rate of call output in echolocating bats.</jats:p>

Palabras clave: Multidisciplinary.

Pp. 1885-1888