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  • Articles  (170)
  • Temperature  (170)
  • American Association for the Advancement of Science (AAAS)  (170)
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  • Articles  (170)
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  • American Association for the Advancement of Science (AAAS)  (170)
  • American Physical Society (APS)
  • Geological Society of America
  • Springer Nature
  • Taylor & Francis
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  • 2010-2014
  • 2005-2009  (99)
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  • 1
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    Marine ecology. Warmer waters more deadly to coral reefs than pollution (2001)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2001-02-24
    Description: Contrary to conventional wisdom, warmer ocean waters are a greater threat to coral reefs than local environmental insults. That assessment comes from a new scientific report released this week that documents a sudden and steep jump in damage stemming from the 1997-98 El Nino-La Nina event.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Normile, D -- New York, N.Y. -- Science. 2000 Oct 27;290(5492):682-3.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11184189" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Climate ; Cnidaria/*physiology ; *Ecosystem ; Fishes ; Industry ; Oceans and Seas ; Temperature ; Water Pollution
    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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    A benefit of being big (2001)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2001-02-24
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Schimpf, D -- New York, N.Y. -- Science. 2000 Oct 20;290(5491):453.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11183763" target="_blank"〉PubMed〈/a〉
    Keywords: Adaptation, Physiological ; *DNA Transposable Elements ; *Genome, Plant ; Plant Development ; Plants/genetics ; Temperature
    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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    A 14,000-year oxygen isotope record from diatom silica in two alpine lakes on Mt. Kenya (2001)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2001-06-26
    Description: Oxygen isotopes are sensitive tracers of climate change in tropical regions. Abrupt shifts of up to 18 per mil in the oxygen isotope ratio of diatom silica have been found in a 14,000-year record from two alpine lakes on Mt. Kenya. Interpretation of tropical-montane isotope records is controversial, especially concerning the relative roles of precipitation and temperature. Here, we argue that Holocene variations in delta(18)O are better explained by lake moisture balance than by temperature-induced fractionation. Episodes of heavy convective precipitation dated approximately 11,100 to 8600, 6700 to 5600, 2900 to 1900, and 〈1300 years before the present were linked to enhanced soil erosion, neoglacial ice advances, and forest expansion on Mt. Kenya.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Barker, P A -- Street-Perrott, F A -- Leng, M J -- Greenwood, P B -- Swain, D L -- Perrott, R A -- Telford, R J -- Ficken, K J -- New York, N.Y. -- Science. 2001 Jun 22;292(5525):2307-10.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Geography, Lancaster University, Lancaster LA1 4YB, UK.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11423656" target="_blank"〉PubMed〈/a〉
    Keywords: Diatoms/*chemistry ; Ecosystem ; Fresh Water ; Geologic Sediments/*chemistry ; Kenya ; Oxygen Isotopes/*analysis ; Pollen ; Rain ; Silicon Dioxide/chemistry ; Temperature ; Time ; *Tropical Climate
    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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    Uniform binding of aminoacyl-tRNAs to elongation factor Tu by thermodynamic compensation (2001)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2001-10-06
    Description: Elongation factor Tu (EF-Tu) binds all elongator aminoacyl-transfer RNAs (aa-tRNAs) for delivery to the ribosome during protein synthesis. Here, we show that EF-Tu binds misacylated tRNAs over a much wider range of affinities than it binds the corresponding correctly acylated tRNAs, suggesting that the protein exhibits considerable specificity for both the amino acid side chain and the tRNA body. The thermodynamic contributions of the amino acid and the tRNA body to the overall binding affinity are independent of each other and compensate for one another when the tRNAs are correctly acylated. Because certain misacylated tRNAs bind EF-Tu significantly more strongly or weakly than cognate aa-tRNAs, EF-Tu may contribute to translational accuracy.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉LaRiviere, F J -- Wolfson, A D -- Uhlenbeck, O C -- GM-37552/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 2001 Oct 5;294(5540):165-8.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Chemistry and Biochemistry, University of Colorado, Boulder, CO 80309-0215, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11588263" target="_blank"〉PubMed〈/a〉
    Keywords: Acylation ; Amino Acids/chemistry/*metabolism ; Escherichia coli/metabolism ; Esterification ; Evolution, Molecular ; *Peptide Biosynthesis ; Peptide Elongation Factor Tu/*metabolism ; Protein Binding ; *Protein Biosynthesis ; RNA, Transfer, Amino Acid-Specific/chemistry/*metabolism ; RNA, Transfer, Amino Acyl/chemistry/*metabolism ; Ribosomes/metabolism ; Temperature ; Thermodynamics ; Thermus thermophilus/metabolism ; Yeasts/metabolism
    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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    The evolution of climate over the last millennium (2001)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2001-04-28
    Description: Knowledge of past climate variability is crucial for understanding and modeling current and future climate trends. This article reviews present knowledge of changes in temperatures and two major circulation features-El Nino-Southern Oscillation (ENSO) and the North Atlantic Oscillation (NAO)-over much of the last 1000 years, mainly on the basis of high-resolution paleoclimate records. Average temperatures during the last three decades were likely the warmest of the last millennium, about 0.2 degrees C warmer than during warm periods in the 11th and 12th centuries. The 20th century experienced the strongest warming trend of the millennium (about 0.6 degrees C per century). Some recent changes in ENSO may have been unique since 1800, whereas the recent trend to more positive NAO values may have occurred several times since 1500. Uncertainties will only be reduced through more extensive spatial sampling of diverse proxy climatic records.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Jones, P D -- Osborn, T J -- Briffa, K R -- New York, N.Y. -- Science. 2001 Apr 27;292(5517):662-7.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Climatic Research Unit, University of East Anglia, Norwich NR4 7TJ, UK. p.jones@uea.ac.uk〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11326088" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Climate ; Cnidaria ; Geologic Sediments ; Ice ; Temperature ; Time ; Trees
    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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    Regulation of vegetative phase change in Arabidopsis thaliana by cyclophilin 40 (2001)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2001-03-27
    Description: During its development, a plant shoot progresses from a juvenile to an adult phase of vegetative growth and from a reproductively incompetent to a reproductively competent state. In Arabidopsis, loss-of-function mutations in SQUINT (SQN) reduced the number of juvenile leaves and had subtle effects on inflorescence morphology but had no effect on flowering time or on reproductive competence. SQN encodes the Arabidopsis homolog of cyclophilin 40 (CyP40), a protein found in association with the Hsp90 chaperone complex in yeast, mammals, and plants. Thus, in Arabidopsis, CyP40 is specifically required for the vegetative but not the reproductive maturation of the shoot.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Berardini, T Z -- Bollman, K -- Sun, H -- Poethig, R S -- R01-GM1893-04/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 2001 Mar 23;291(5512):2405-7.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Plant Science Institute, Department of Biology, University of Pennsylvania, Philadelphia, PA 19104-6018, USA. spoethig@sas.upenn.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11264535" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Arabidopsis/anatomy & histology/*genetics/*growth & development/physiology ; Carrier Proteins/chemistry/genetics/physiology ; Chromosome Mapping ; *Cyclophilins ; Exons ; Gene Expression Regulation, Plant ; Genes, Plant ; Heat-Shock Proteins/genetics ; Molecular Sequence Data ; Mutation ; Peptidylprolyl Isomerase/chemistry/genetics/physiology ; Phenotype ; Plant Leaves/anatomy & histology/growth & development ; Plant Shoots/growth & development/physiology ; Reproduction ; Sequence Alignment ; Temperature
    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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    Plant physiology. Philodendrons like it hot and heavy (2001)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2001-04-18
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Dayton, L -- New York, N.Y. -- Science. 2001 Apr 13;292(5515):186.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11305294" target="_blank"〉PubMed〈/a〉
    Keywords: Angiosperms/*metabolism ; Diffusion ; Energy Metabolism ; Mitochondria/metabolism ; Oxidation-Reduction ; *Oxygen Consumption ; Plant Structures/metabolism ; Temperature
    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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    Endangered right whales on the southeastern Bering Sea shelf (2001)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2001-12-01
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Tynan, C T -- DeMaster, D P -- Peterson, W T -- New York, N.Y. -- Science. 2001 Nov 30;294(5548):1894.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Northwest Fisheries Science Center (NWFSC), National Oceanic and Atmospheric Administration (NOAA), Seattle, WA 98112, USA. Cynthia.Tynan@noaa.gov〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11729308" target="_blank"〉PubMed〈/a〉
    Keywords: Animal Migration ; Animals ; *Ecosystem ; *Environment ; Food Chain ; *Geography ; Pacific Ocean ; Seawater ; Survival Rate ; Temperature ; Time Factors ; Whales/*physiology
    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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    Biogenic carbon cycling in the upper ocean: effects of microbial respiration (2001)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2001-03-27
    Description: Food-web processes are important controls of oceanic biogenic carbon flux and ocean-atmosphere carbon dioxide exchange. Two key controlling parameters are the growth efficiencies of the principal trophic components and the rate of carbon remineralization. We report that bacterial growth efficiency is an inverse function of temperature. This relationship permits bacterial respiration in the euphotic zone to be computed from temperature and bacterial production. Using the temperature-growth efficiency relationship, we show that bacterial respiration generally accounts for most community respiration. This implies that a larger fraction of assimilated carbon is respired at low than at high latitudes, so a greater proportion of production can be exported in polar than in tropical regions. Because bacterial production is also a function of temperature, it should be possible to compute euphotic zone heterotrophic respiration at large scales using remotely sensed information.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Rivkin, R B -- Legendre, L -- New York, N.Y. -- Science. 2001 Mar 23;291(5512):2398-400.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Ocean Sciences Centre, Memorial University of Newfoundland, St. John's, Newfoundland A1C 5S7, Canada. rrivkin@mun.ca〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11264533" target="_blank"〉PubMed〈/a〉
    Keywords: Atmosphere ; Bacteria/*growth & development/*metabolism ; Biomass ; Carbon/*metabolism ; Carbon Dioxide/*metabolism ; Ecosystem ; Food Chain ; Oceans and Seas ; Oxygen Consumption ; Seawater/*microbiology ; Temperature
    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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  • 10
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    Neurobiology. Learning how a fruit fly forgets (2001)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2001-08-18
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Waddell, S -- Quinn, W G -- New York, N.Y. -- Science. 2001 Aug 17;293(5533):1271-2.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Brain and Cognitive Sciences, Massachusetts Institute of Technology, Cambridge, MA 02139, USA. waddell@mit.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11509718" target="_blank"〉PubMed〈/a〉
    Keywords: Afferent Pathways/physiology ; Animals ; Brain/physiology ; Cyclic AMP/metabolism ; Drosophila/genetics/*physiology ; *Drosophila Proteins ; Dynamins ; Electroshock ; GTP Phosphohydrolases/genetics/physiology ; Genes, Insect ; Learning/*physiology ; Memory/*physiology ; Mental Recall/physiology ; Models, Neurological ; Neurons/*physiology ; Neuropeptides/genetics/physiology ; Odors ; Presynaptic Terminals/physiology ; Second Messenger Systems ; Signal Transduction ; *Synaptic Transmission ; Temperature ; Transgenes
    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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