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  • 1
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    Graduate students' views on unionization (2003)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2003-01-21
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Castellanos, Mariajose -- Holland-Minkley, Amanda M -- MacKenzie, Allen B -- McNeil, Anne J -- Toomey, David -- New York, N.Y. -- Science. 2003 Jan 17;299(5605):345-6.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/12532977" target="_blank"〉PubMed〈/a〉
    Keywords: *Education, Graduate ; *Labor Unions ; New York ; United States ; *Universities
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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  • 2
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    Explaining the Weddell Polynya--a large ocean eddy shed at Maud Rise (2001)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2001-06-02
    Description: Satellite observations have shown the occasional occurrence of a large opening in the sea-ice cover of the Weddell Sea, Antarctica, a phenomenon known as the Weddell Polynya. The transient appearance, position, size, and shape of the polynya is explained here by a mechanism by which modest variations in the large-scale oceanic flow past the Maud Rise seamount cause a horizontal cyclonic eddy to be shed from its northeast flank. The shed eddy transmits a divergent Ekman stress into the sea ice, leading to a crescent-shaped opening in the pack. Atmospheric thermodynamical interaction further enhances the opening by inducing oceanic convection. A sea-ice-ocean computer model simulation vividly demonstrates how this mechanism fully accounts for the characteristics that mark Weddell Polynya events.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Holland, D M -- New York, N.Y. -- Science. 2001 Jun 1;292(5522):1697-700.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Center for Atmosphere-Ocean Science, Courant Institute of Mathematical Sciences and Faculty of Arts and Science, New York University, New York, NY 10012, USA. holland@cims.nyu.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11387470" target="_blank"〉PubMed〈/a〉
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 3
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    Consistent land- and atmosphere-based U.S. carbon sink estimates (2001)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2001-06-26
    Description: For the period 1980-89, we estimate a carbon sink in the coterminous United States between 0.30 and 0.58 petagrams of carbon per year (petagrams of carbon = 10(15) grams of carbon). The net carbon flux from the atmosphere to the land was higher, 0.37 to 0.71 petagrams of carbon per year, because a net flux of 0.07 to 0.13 petagrams of carbon per year was exported by rivers and commerce and returned to the atmosphere elsewhere. These land-based estimates are larger than those from previous studies (0.08 to 0.35 petagrams of carbon per year) because of the inclusion of additional processes and revised estimates of some component fluxes. Although component estimates are uncertain, about one-half of the total is outside the forest sector. We also estimated the sink using atmospheric models and the atmospheric concentration of carbon dioxide (the tracer-transport inversion method). The range of results from the atmosphere-based inversions contains the land-based estimates. Atmosphere- and land-based estimates are thus consistent, within the large ranges of uncertainty for both methods. Atmosphere-based results for 1980-89 are similar to those for 1985-89 and 1990-94, indicating a relatively stable U.S. sink throughout the period.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Pacala, S W -- Hurtt, G C -- Baker, D -- Peylin, P -- Houghton, R A -- Birdsey, R A -- Heath, L -- Sundquist, E T -- Stallard, R F -- Ciais, P -- Moorcroft, P -- Caspersen, J P -- Shevliakova, E -- Moore, B -- Kohlmaier, G -- Holland, E -- Gloor, M -- Harmon, M E -- Fan, S M -- Sarmiento, J L -- Goodale, C L -- Schimel, D -- Field, C B -- New York, N.Y. -- Science. 2001 Jun 22;292(5525):2316-20.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Ecology and Evolutionary Biology, Atmospheric and Oceanic Sciences Program, Princeton University, Princeton, NJ 08544, USA. Pacala@princeton.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11423659" target="_blank"〉PubMed〈/a〉
    Keywords: Agriculture ; *Atmosphere ; *Carbon/metabolism ; Carbon Dioxide ; Conservation of Natural Resources ; Ecosystem ; Fires ; Forestry ; Soil ; Time Factors ; *Trees/metabolism ; United States ; Wood
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 4
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    Impairment of mycobacterial but not viral immunity by a germline human STAT1 mutation (2001)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2001-07-14
    Description: Interferons (IFN) alpha/beta and gamma induce the formation of two transcriptional activators: gamma-activating factor (GAF) and interferon-stimulated gamma factor 3 (ISGF3). We report a natural heterozygous germline STAT1 mutation associated with susceptibility to mycobacterial but not viral disease. This mutation causes a loss of GAF and ISGF3 activation but is dominant for one cellular phenotype and recessive for the other. It impairs the nuclear accumulation of GAF but not of ISGF3 in heterozygous cells stimulated by IFNs. Thus, the antimycobacterial, but not the antiviral, effects of human IFNs are principally mediated by GAF.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Dupuis, S -- Dargemont, C -- Fieschi, C -- Thomassin, N -- Rosenzweig, S -- Harris, J -- Holland, S M -- Schreiber, R D -- Casanova, J L -- New York, N.Y. -- Science. 2001 Jul 13;293(5528):300-3.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Laboratoire de Genetique Humaine des Maladies Infectieuses, Universite de Paris Rene Descartes-INSERM UMR550, Faculte de Medecine Necker-Enfants Malades, 75015 Paris, France.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11452125" target="_blank"〉PubMed〈/a〉
    Keywords: Adult ; Animals ; Cell Line ; Child ; Child, Preschool ; DNA/metabolism ; DNA-Binding Proteins/genetics/*physiology ; Female ; Fibroblasts/metabolism/virology ; Gene Expression Regulation ; *Germ-Line Mutation ; Humans ; *Immunity/genetics ; Interferon-Stimulated Gene Factor 3 ; Interferon-Stimulated Gene Factor 3, gamma Subunit ; Interferon-alpha/*immunology/metabolism ; Interferon-gamma/*immunology/metabolism ; Janus Kinase 1 ; Mice ; Mycobacterium Infections/genetics/*immunology ; Mycobacterium avium Complex/immunology ; Mycobacterium avium-intracellulare Infection/genetics/immunology ; Mycobacterium bovis ; Pedigree ; Protein Binding ; Protein-Tyrosine Kinases/genetics ; STAT1 Transcription Factor ; Signal Transduction ; Simian virus 40 ; Trans-Activators/genetics/*physiology ; Transcription Factors/physiology ; Virus Diseases/genetics/*immunology
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 5
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    Rates of evolution in ancient DNA from Adelie penguins (2002)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2002-03-23
    Description: Well-preserved subfossil bones of Adelie penguins, Pygoscelis adeliae, underlie existing and abandoned nesting colonies in Antarctica. These bones, dating back to more than 7000 years before the present, harbor some of the best-preserved ancient DNA yet discovered. From 96 radiocarbon-aged bones, we report large numbers of mitochondrial haplotypes, some of which appear to be extinct, given the 380 living birds sampled. We demonstrate DNA sequence evolution through time and estimate the rate of evolution of the hypervariable region I using a Markov chain Monte Carlo integration and a least-squares regression analysis. Our calculated rates of evolution are approximately two to seven times higher than previous indirect phylogenetic estimates.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Lambert, D M -- Ritchie, P A -- Millar, C D -- Holland, B -- Drummond, A J -- Baroni, C -- New York, N.Y. -- Science. 2002 Mar 22;295(5563):2270-3.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Institute of Molecular BioSciences, Massey University, Private Bag 11-222, Palmerston North, New Zealand. D.M.Lambert@massey.ac.nz〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11910113" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Antarctic Regions ; Birds/*genetics ; Bone and Bones/metabolism ; Calibration ; Carbon Radioisotopes ; DNA, Mitochondrial/*genetics/isolation & purification ; Ecosystem ; *Evolution, Molecular ; Fossils ; Haplotypes/genetics ; Least-Squares Analysis ; Markov Chains ; Monte Carlo Method ; Phylogeny ; Polymerase Chain Reaction ; Time Factors
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 6
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    How and why do insects migrate? (2006)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2006-08-12
    Description: Countless numbers of insects migrate within and between continents every year, and yet we know very little about the ultimate reasons and proximate mechanisms that would explain these mass movements. Here we suggest that perhaps the most important reason for insects to migrate is to hedge their reproductive bets. By spreading their breeding efforts in space and time, insects distribute their offspring over a range of environmental conditions. We show how the study of individual long-distance movements of insects may contribute to a better understanding of migration. In the future, advances in tracking methods may enable the global surveillance of large insects such as desert locusts.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Holland, Richard A -- Wikelski, Martin -- Wilcove, David S -- New York, N.Y. -- Science. 2006 Aug 11;313(5788):794-6.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Ecology and Evolutionary Biology, Princeton University, Princeton NJ 08544, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/16902129" target="_blank"〉PubMed〈/a〉
    Keywords: *Animal Migration ; Animals ; *Flight, Animal ; Insects/genetics/*physiology ; Reproduction ; Telemetry
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 7
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    Was there really an Archean phosphate crisis? (2007)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2007-03-03
    Description: During the Archean, massive amounts of iron were deposited in the form of banded iron formations. It has been suggested that sedimenting particles of ferric oxyhydroxide may have stripped dissolved phosphate from the oceans, causing a reduction in phytoplankton productivity. However, that model does not take into account the high concentration of dissolved silica that was present in seawater at that time. We show experimentally that silica effectively competes with phosphate for sorption sites on ferrihydrite particles. Furthermore, coprecipitation of silica with ferrihydrite reduces particle reactivity toward phosphate. Hence, Archean oceans probably contained considerably more phosphate than previously predicted.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Konhauser, Kurt O -- Lalonde, Stefan V -- Amskold, Larry -- Holland, Heinrich D -- New York, N.Y. -- Science. 2007 Mar 2;315(5816):1234.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Earth and Atmospheric Sciences, University of Alberta, Edmonton, Alberta T6G 2E3, Canada. kurtk@ualberta.ca〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17332403" target="_blank"〉PubMed〈/a〉
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 8
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    A proposal for a Decade of the Mind initiative (2007)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2007-09-08
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Albus, James S -- Bekey, George A -- Holland, John H -- Kanwisher, Nancy G -- Krichmar, Jeffrey L -- Mishkin, Mortimer -- Modha, Dharmendra S -- Raichle, Marcus E -- Shepherd, Gordon M -- Tononi, Giulio -- New York, N.Y. -- Science. 2007 Sep 7;317(5843):1321.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17823330" target="_blank"〉PubMed〈/a〉
    Keywords: Biomedical Research ; Humans ; Mental Processes/*physiology ; Psychophysiology ; Research Design
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 9
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    Perspectives on the Arctic's shrinking sea-ice cover (2007)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2007-03-17
    Description: Linear trends in arctic sea-ice extent over the period 1979 to 2006 are negative in every month. This ice loss is best viewed as a combination of strong natural variability in the coupled ice-ocean-atmosphere system and a growing radiative forcing associated with rising concentrations of atmospheric greenhouse gases, the latter supported by evidence of qualitative consistency between observed trends and those simulated by climate models over the same period. Although the large scatter between individual model simulations leads to much uncertainty as to when a seasonally ice-free Arctic Ocean might be realized, this transition to a new arctic state may be rapid once the ice thins to a more vulnerable state. Loss of the ice cover is expected to affect the Arctic's freshwater system and surface energy budget and could be manifested in middle latitudes as altered patterns of atmospheric circulation and precipitation.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Serreze, Mark C -- Holland, Marika M -- Stroeve, Julienne -- New York, N.Y. -- Science. 2007 Mar 16;315(5818):1533-6.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Cooperative Institute for Research in Environmental Sciences, National Snow and Ice Data Center, Campus Box 449, University of Colorado, Boulder, CO 80309-0449, USA. serreze@kryos.colorado.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17363664" target="_blank"〉PubMed〈/a〉
    Print ISSN: 0036-8075
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 10
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    Phanerozoic trends in the global diversity of marine invertebrates (2008)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2008-07-05
    Description: It has previously been thought that there was a steep Cretaceous and Cenozoic radiation of marine invertebrates. This pattern can be replicated with a new data set of fossil occurrences representing 3.5 million specimens, but only when older analytical protocols are used. Moreover, analyses that employ sampling standardization and more robust counting methods show a modest rise in diversity with no clear trend after the mid-Cretaceous. Globally, locally, and at both high and low latitudes, diversity was less than twice as high in the Neogene as in the mid-Paleozoic. The ratio of global to local richness has changed little, and a latitudinal diversity gradient was present in the early Paleozoic.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Alroy, John -- Aberhan, Martin -- Bottjer, David J -- Foote, Michael -- Fursich, Franz T -- Harries, Peter J -- Hendy, Austin J W -- Holland, Steven M -- Ivany, Linda C -- Kiessling, Wolfgang -- Kosnik, Matthew A -- Marshall, Charles R -- McGowan, Alistair J -- Miller, Arnold I -- Olszewski, Thomas D -- Patzkowsky, Mark E -- Peters, Shanan E -- Villier, Loic -- Wagner, Peter J -- Bonuso, Nicole -- Borkow, Philip S -- Brenneis, Benjamin -- Clapham, Matthew E -- Fall, Leigh M -- Ferguson, Chad A -- Hanson, Victoria L -- Krug, Andrew Z -- Layou, Karen M -- Leckey, Erin H -- Nurnberg, Sabine -- Powers, Catherine M -- Sessa, Jocelyn A -- Simpson, Carl -- Tomasovych, Adam -- Visaggi, Christy C -- New York, N.Y. -- Science. 2008 Jul 4;321(5885):97-100. doi: 10.1126/science.1156963.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉National Center for Ecological Analysis and Synthesis, University of California-Santa Barbara, 735 State Street, Santa Barbara, CA 93101, USA. alroy@nceas.ucsb.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/18599780" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Biodiversity ; Biological Evolution ; Databases, Factual ; Environment ; *Fossils ; Geography ; Geologic Sediments ; *Invertebrates/classification ; *Paleontology/methods ; Population Dynamics ; Sampling Studies ; Seawater ; Time Factors
    Print ISSN: 0036-8075
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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