Science 22 December 2006: 1898-1903.
An epidemiological model that allows for differences between influenza's genetic and antigenic properties accurately predicts actual patterns of flu infection.
Abstract »| Full Text »| PDF »| Supporting Online Material »|
Structure of Dual Function Iron Regulatory Protein 1 Complexed with Ferritin IRE-RNA
William E. Walden, Anna I. Selezneva, Jérôme Dupuy, Anne Volbeda, Juan C. Fontecilla-Camps, Elizabeth C. Theil, and Karl Volz
Science 22 December 2006: 1903-1908.
A dual function protein switches from its compact enzymatic form to an extended RNA binding form through extensive domain rearrangements.
Abstract »| Full Text »| PDF »| Supporting Online Material »|
Reports
A Gaseous Metal Disk Around a White Dwarf
B. T. Gänsicke, T. R. Marsh, J. Southworth, and A. Rebassa-Mansergas
Science 22 December 2006: 1908-1910.
A double-peaked emission-line profile marks a disk of enriched material orbiting a white dwarf, implying that planetary systems can form around high-mass stars.
Abstract »| Full Text »| PDF »| Supporting Online Material »|
Distinct Fermi-Momentum-Dependent Energy Gaps in Deeply Underdoped Bi2212
Kiyohisa Tanaka, W. S. Lee, D. H. Lu, A. Fujimori, T. Fujii, Risdiana, I. Terasaki, D. J. Scalapino, T. P. Devereaux, Z. Hussain, and Z.-X. Shen
Science 22 December 2006: 1910-1913.
Published online 16 November 2006 [DOI: 10.1126/science.1133411] (in Science Express Reports)
Spectrometry on a high-temperature superconductor lacking a few of its electrons reveals that two additional energy gaps separate the pseudogap and the true superconducting gap.
Abstract »| Full Text »| PDF »| Supporting Online Material »|
The Ground State of the Pseudogap in Cuprate Superconductors
T. Valla, A. V. Fedorov, Jinho Lee, J. C. Davis, and G. D. Gu
Science 22 December 2006: 1914-1916.
Published online 16 November 2006 [DOI: 10.1126/science.1134742] (in Science Express Reports)
The existence of an energy gap in a nonsuperconducting cuprate suggests that a comparable gap in superconductors arises as electrons pair up but are not fully coherent.
Abstract »| Full Text »| PDF »| Supporting Online Material »|
Nondestructive Optical Measurements of a Single Electron Spin in a Quantum Dot
J. Berezovsky, M. H. Mikkelsen, O. Gywat, N. G. Stoltz, L. A. Coldren, and D. D. Awschalom
Science 22 December 2006: 1916-1920.
Published online 9 November 2006 [DOI: 10.1126/science.1133862] (in Science Express Reports)
An optical technique can probe the spin state of a single electron in a quantum dot without altering it, meeting a requirement for quantum information processing.
Abstract »| Full Text »| PDF »| Supporting Online Material »|
A Sea-Floor Spreading Event Captured by Seismometers
M. Tolstoy, J. P. Cowen, E. T. Baker, D. J. Fornari, K. H. Rubin, T. M. Shank, F. Waldhauser, D. R. Bohnenstiehl, D. W. Forsyth, R. C. Holmes, B. Love, M. R. Perfit, R. T. Weekly, S. A. Soule, and B. Glazer
Science 22 December 2006: 1920-1922.
Published online 23 November 2006 [DOI: 10.1126/science.1133950] (in Science Express Reports)
Seismometers of the ocean floor revealed an increase in earthquakes for several months before an eruption of magma that formed a new sea floor along the East Pacific Rise.
Abstract »| Full Text »| PDF »| Supporting Online Material »|
Homoploid Hybrid Speciation in an Extreme Habitat
Zachariah Gompert, James A. Fordyce, Matthew L. Forister, Arthur M. Shapiro, and Chris C. Nice
Science 22 December 2006: 1923-1925.
Published online 30 November 2006 [DOI: 10.1126/science.1135875] (in Science Express Reports)
As postulated by theory, a new species of butterfly evolved when a hybrid of two existing species became adapted to an extreme alpine environment.
Abstract »| Full Text »| PDF »| Supporting Online Material »|
A Giant European Dinosaur and a New Sauropod Clade
Rafael Royo-Torres, Alberto Cobos, and Luis Alcalá
Science 22 December 2006: 1925-1927.
A giant sauropod, representing a new clade of dinosaurs, inhabited Europe in the Late Jurassic and appears to be more primitive than New World giant sauropods.
Abstract »| Full Text »| PDF »| Supporting Online Material »|
Anticipatory Reproduction and Population Growth in Seed Predators
Stan Boutin, Lucas A. Wauters, Andrew G. McAdam, Murray M. Humphries, Guido Tosi, and André A. Dhondt
Science 22 December 2006: 1928-1930.
Squirrels increase reproduction before seasonal pulses of high seed production, synchronizing population size with resource availability.
Abstract »| Full Text »| PDF »| Supporting Online Material »|
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