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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

Tabla de contenidos

Rapid and Extensive Surface Changes Near Titan’s Equator: Evidence of April Showers

E. P. Turtle; J. E. Perry; A. G. Hayes; R. D. Lorenz; J. W. Barnes; A. S. McEwen; R. A. West; A. D. Del Genio; J. M. Barbara; J. I. Lunine; E. L. Schaller; T. L. Ray; R. M. C. Lopes; E. R. Stofan

<jats:p>The Cassini spacecraft detected signs of recent methane rainfall on Titan’s arid equatorial surface.</jats:p>

Palabras clave: Multidisciplinary.

Pp. 1414-1417

Isotopic Evidence of Cr Partitioning into Earth’s Core

Frederic Moynier; Qing-Zhu Yin; Edwin Schauble

<jats:p>Chromium isotopes in meteorites reveal Earth’s accretion history.</jats:p>

Palabras clave: Multidisciplinary.

Pp. 1417-1420

Direct Observation of Continuous Electric Dipole Rotation in Flux-Closure Domains in Ferroelectric Pb(Zr,Ti)O 3

Chun-Lin Jia; Knut W. Urban; Marin Alexe; Dietrich Hesse; Ionela Vrejoiu

<jats:p>Domains can be stabilized in a thin ferroelectric material through the continuous rotation of the dipoles.</jats:p>

Palabras clave: Multidisciplinary.

Pp. 1420-1423

Vibrationally Quantum-State–Specific Reaction Dynamics of H Atom Abstraction by CN Radical in Solution

Stuart J. Greaves; Rebecca A. Rose; Thomas A. A. Oliver; David R. Glowacki; Michael N. R. Ashfold; Jeremy N. Harvey; Ian P. Clark; Gregory M. Greetham; Anthony W. Parker; Michael Towrie; Andrew J. Orr-Ewing

<jats:p>Molecular vibrations in a solution-phase reaction are detected at a level of detail rivaling that of gas-phase studies.</jats:p>

Palabras clave: Multidisciplinary.

Pp. 1423-1426

Regeneration of Ammonia Borane Spent Fuel by Direct Reaction with Hydrazine and Liquid Ammonia

Andrew D. Sutton; Anthony K. Burrell; David A. Dixon; Edward B. Garner; John C. Gordon; Tessui Nakagawa; Kevin C. Ott; J. Pierce Robinson; Monica Vasiliu

<jats:p>A method to regenerate lightweight, hydrogen-rich ammonia borane improves its prospects as a vehicular fuel source.</jats:p>

Palabras clave: Multidisciplinary.

Pp. 1426-1429

Dynamic Control of Chiral Space in a Catalytic Asymmetric Reaction Using a Molecular Motor

Jiaobing Wang; Ben L. Feringa

<jats:p>Photoisomerization of a molecular catalyst changes its conformation and switches the chirality of its reaction product.</jats:p>

Palabras clave: Multidisciplinary.

Pp. 1429-1432

Second-Order Selection for Evolvability in a Large Escherichia coli Population

Robert J. Woods; Jeffrey E. Barrick; Tim F. Cooper; Utpala Shrestha; Mark R. Kauth; Richard E. Lenski

<jats:p>Descendants of bacterial lineages that retained adaptation potential outcompeted competitors of higher fitness.</jats:p>

Palabras clave: Multidisciplinary.

Pp. 1433-1436

Independent and Parallel Recruitment of Preexisting Mechanisms Underlying C 4 Photosynthesis

Naomi J. Brown; Christine A. Newell; Susan Stanley; Jit E. Chen; Abigail J. Perrin; Kaisa Kajala; Julian M. Hibberd

<jats:p> Recurrent evolution of C <jats:sub>4</jats:sub> photosynthesis is due to conserved regulatory sequences that localize photosynthetic enzymes. </jats:p>

Palabras clave: Multidisciplinary.

Pp. 1436-1439

Cardiac Myosin Activation: A Potential Therapeutic Approach for Systolic Heart Failure

Fady I. Malik; James J. Hartman; Kathleen A. Elias; Bradley P. Morgan; Hector Rodriguez; Katjuša Brejc; Robert L. Anderson; Sandra H. Sueoka; Kenneth H. Lee; Jeffrey T. Finer; Roman Sakowicz; Ramesh Baliga; David R. Cox; Marc Garard; Guillermo Godinez; Raja Kawas; Erica Kraynack; David Lenzi; Pu Ping Lu; Alexander Muci; Congrong Niu; Xiangping Qian; Daniel W. Pierce; Maria Pokrovskii; Ion Suehiro; Sheila Sylvester; Todd Tochimoto; Corey Valdez; Wenyue Wang; Tatsuo Katori; David A. Kass; You-Tang Shen; Stephen F. Vatner; David J. Morgans

<jats:p>A small molecule improves cardiac function by accelerating the transition of myosin into a force-producing state.</jats:p>

Palabras clave: Multidisciplinary.

Pp. 1439-1443

Reversal of Interlaminar Signal Between Sensory and Memory Processing in Monkey Temporal Cortex

Daigo Takeuchi; Toshiyuki Hirabayashi; Keita Tamura; Yasushi Miyashita

<jats:p>Feed-forward signals flowing across cortical layers during sensory coding reverse direction during memory retrieval.</jats:p>

Palabras clave: Multidisciplinary.

Pp. 1443-1447