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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.278.5346.2063c

Largest Dino Claw Unearthed

Palabras clave: Multidisciplinary.

Pp. 2063-2063

doi: 10.1126/science.278.5346.2066

Conversations with the Community: AAAS at the Millennium

Sheila Jasanoff; Rita Colwell; Mildred S. Dresselhaus; Robert D. Goldman; M. R. C. Greenwood; Alice S. Huang; William Lester; Simon A. Levin; Marcia C. Linn; Jane Lubchenco; Michael J. Novacek; Anna C. Roosevelt; Jean E. Taylor; Nancy Wexler

Palabras clave: Multidisciplinary.

Pp. 2066-2067

doi: 10.1126/science.278.5346.2067

AAAS Conversation on Science 8 Society

Palabras clave: Multidisciplinary.

Pp. 2067

doi: 10.1126/science.278.5346.2068

Catalyst for a Cultural Dialogue

Kenneth Lewes

<jats:p> <jats:bold>Alfred C. Kinsey</jats:bold> . A Public/Private Life. JAMES H. JONES. Norton, New York, 1997. xx, 937 pp., + plates. Paper, $39.95 or C$49.99. ISBN 0-393-04086-0. </jats:p>

Palabras clave: Multidisciplinary.

Pp. 2068-2069

doi: 10.1126/science.278.5346.2070

New Views of Asteroids

Erik Asphaug

Palabras clave: Multidisciplinary.

Pp. 2070-2071

doi: 10.1126/science.278.5346.2071

Conducting Polymers: From Novel Science to New Technology

J. Campbell Scott

Palabras clave: Multidisciplinary.

Pp. 2071-2072

doi: 10.1126/science.278.5346.2072

A Ribosome at the End of the Tunnel

Ted Powers; Peter Walter

Palabras clave: Multidisciplinary.

Pp. 2072-2073

doi: 10.1126/science.278.5346.2073

Control of the Supply Line

Jeffrey Roberts

Palabras clave: Multidisciplinary.

Pp. 2073-2074

doi: 10.1126/science.278.5346.2075

Signaling Through Scaffold, Anchoring, and Adaptor Proteins

Tony Pawson; John D. Scott

<jats:p>The process by which extracellular signals are relayed from the plasma membrane to specific intracellular sites is an essential facet of cellular regulation. Many signaling pathways do so by altering the phosphorylation state of tyrosine, serine, or threonine residues of target proteins. Recently, it has become apparent that regulatory mechanisms exist to influence where and when protein kinases and phosphatases are activated in the cell. The role of scaffold, anchoring, and adaptor proteins that contribute to the specificity of signal transduction events by recruiting active enzymes into signaling networks or by placing enzymes close to their substrates is discussed.</jats:p>

Palabras clave: Multidisciplinary.

Pp. 2075-2080

doi: 10.1126/science.278.5346.2080

Large-Cage Zeolite Structures with Multidimensional 12-Ring Channels

Xianhui Bu; Pingyun Feng; Galen D. Stucky

<jats:p>Zeolite type structures with large cages interconnected by multidimensional 12-ring (rings of 12 tetrahedrally coordinated atoms) channels have been synthesized; more than a dozen large-pore materials were created in three different topologies with aluminum (or gallium), cobalt (or manganese, magnesium, or zinc), and phosphorus at the tetrahedral coordination sites. Tetragonal UCSB-8 has an unusually large cage built from 64 tetrahedral atoms and connected by an orthogonal channel system with 12-ring apertures in two dimensions and 8-ring apertures in the third. Rhombohedral UCSB-10 and hexagonal UCSB-6 are structurally related to faujasite and its hexagonal polymorph, respectively, and have large cages connected by 12-ring channels in all three dimensions.</jats:p>

Palabras clave: Multidisciplinary.

Pp. 2080-2085