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  • Temperature  (37)
  • American Association for the Advancement of Science (AAAS)  (37)
  • American Association for the Advancement of Science
  • American Institute of Physics (AIP)
  • Springer Nature
  • 2000-2004  (37)
  • 1995-1999
  • 1980-1984
  • 1940-1944
  • 2002  (24)
  • 2000  (13)
Collection
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  • American Association for the Advancement of Science (AAAS)  (37)
  • American Association for the Advancement of Science
  • American Institute of Physics (AIP)
  • Springer Nature
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  • 2000-2004  (37)
  • 1995-1999
  • 1980-1984
  • 1940-1944
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  • 1
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    Observations of comet 19P/Borrelly by the miniature integrated camera and spectrometer aboard Deep Space 1 (2002)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2002-04-06
    Description: The nucleus of the Jupiter-family comet 19P/Borrelly was closely observed by the Miniature Integrated Camera and Spectrometer aboard the Deep Space 1 spacecraft on 22 September 2001. The 8-kilometer-long body is highly variegated on a scale of 200 meters, exhibiting large albedo variations (0.01 to 0.03) and complex geologic relationships. Short-wavelength infrared spectra (1.3 to 2.6 micrometers) show a slope toward the red and a hot, dry surface (〈/=345 kelvin, with no trace of water ice or hydrated minerals), consistent with approximately 10% or less of the surface actively sublimating. Borrelly's coma exhibits two types of dust features: fans and highly collimated jets. At encounter, the near-nucleus coma was dominated by a prominent dust jet that resolved into at least three smaller jets emanating from a broad basin in the middle of the nucleus. Because the major dust jet remained fixed in orientation, it is evidently aligned near the rotation axis of the nucleus.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Soderblom, L A -- Becker, T L -- Bennett, G -- Boice, D C -- Britt, D T -- Brown, R H -- Buratti, B J -- Isbell, C -- Giese, B -- Hare, T -- Hicks, M D -- Howington-Kraus, E -- Kirk, R L -- Lee, M -- Nelson, R M -- Oberst, J -- Owen, T C -- Rayman, M D -- Sandel, B R -- Stern, S A -- Thomas, N -- Yelle, R V -- New York, N.Y. -- Science. 2002 May 10;296(5570):1087-91. Epub 2002 Apr 4.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉United States Geological Survey, 2255 North Gemini Drive, Flagstaff, AZ 86001, USA. lsoderblom@usgs.gov〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11934989" target="_blank"〉PubMed〈/a〉
    Keywords: Carbon/analysis ; Cosmic Dust ; Hydrocarbons/analysis ; *Meteoroids ; Spectrum Analysis ; Temperature
    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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    Internal structure and early thermal evolution of Mars from Mars Global Surveyor topography and gravity (2000)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2000-03-10
    Description: Topography and gravity measured by the Mars Global Surveyor have enabled determination of the global crust and upper mantle structure of Mars. The planet displays two distinct crustal zones that do not correlate globally with the geologic dichotomy: a region of crust that thins progressively from south to north and encompasses much of the southern highlands and Tharsis province and a region of approximately uniform crustal thickness that includes the northern lowlands and Arabia Terra. The strength of the lithosphere beneath the ancient southern highlands suggests that the northern hemisphere was a locus of high heat flow early in martian history. The thickness of the elastic lithosphere increases with time of loading in the northern plains and Tharsis. The northern lowlands contain structures interpreted as large buried channels that are consistent with northward transport of water and sediment to the lowlands before the end of northern hemisphere resurfacing.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Zuber, M T -- Solomon, S C -- Phillips, R J -- Smith, D E -- Tyler, G L -- Aharonson, O -- Balmino, G -- Banerdt, W B -- Head, J W -- Johnson, C L -- Lemoine, F G -- McGovern, P J -- Neumann, G A -- Rowlands, D D -- Zhong, S -- New York, N.Y. -- Science. 2000 Mar 10;287(5459):1788-93.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Earth, Atmospheric, and Planetary Sciences, Massachusetts Institute of Technology, Cambridge, MA 02139, USA. zuber@mit.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10710301" target="_blank"〉PubMed〈/a〉
    Keywords: Atmosphere ; *Evolution, Planetary ; *Extraterrestrial Environment ; Geologic Sediments ; Gravitation ; *Mars ; Temperature ; Water
    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 H+-gated urea channel: the link between Helicobacter pylori urease and gastric colonization (2000)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2000-01-22
    Description: Acidic media trigger cytoplasmic urease activity of the unique human gastric pathogen Helicobacter pylori. Deletion of ureI prevents this activation of cytoplasmic urease that is essential for bacterial acid resistance. UreI is an inner membrane protein with six transmembrane segments as shown by in vitro transcription/translation and membrane separation. Expression of UreI in Xenopus oocytes results in acid-stimulated urea uptake, with a pH profile similar to activation of cytoplasmic urease. Mutation of periplasmic histidine 123 abolishes stimulation. UreI-mediated transport is urea specific, passive, nonsaturable, nonelectrogenic, and temperature independent. UreI functions as a H+-gated urea channel regulating cytoplasmic urease that is essential for gastric survival and colonization.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Weeks, D L -- Eskandari, S -- Scott, D R -- Sachs, G -- DK41301/DK/NIDDK NIH HHS/ -- DK43462/DK/NIDDK NIH HHS/ -- DK46917/DK/NIDDK NIH HHS/ -- etc. -- New York, N.Y. -- Science. 2000 Jan 21;287(5452):482-5.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉VA Greater Los Angeles Healthcare System and Department of Physiology, University of California, Los Angeles, CA 90073, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10642549" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Bacterial Proteins/chemistry/genetics/*metabolism ; Biological Transport ; Cell Membrane/chemistry ; Cell Membrane Permeability ; Cytoplasm/enzymology/metabolism ; Enzyme Activation ; Gastric Acid ; Glycosylation ; Helicobacter pylori/enzymology/growth & development/*metabolism ; Histidine/metabolism ; Humans ; Hydrogen-Ion Concentration ; *Membrane Transport Proteins ; Molecular Sequence Data ; Oocytes/enzymology ; Recombinant Proteins/metabolism ; Stomach/*microbiology ; Temperature ; Urea/*metabolism ; Urease/*metabolism ; Xenopus
    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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    Blue-fluorescent antibodies (2000)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2000-10-13
    Description: The forte of catalytic antibodies has resided in the control of the ground-state reaction coordinate. A principle and method are now described in which antibodies can direct the outcome of photophysical and photochemical events that take place on excited-state potential energy surfaces. The key component is a chemically reactive optical sensor that provides a direct report of the dynamic interplay between protein and ligand at the active site. To illustrate the concept, we used a trans-stilbene hapten to elicit a panel of monoclonal antibodies that displayed a range of fluorescent spectral behavior when bound to a trans-stilbene substrate. Several antibodies yielded a blue fluorescence indicative of an excited-state complex or "exciplex" between trans-stilbene and the antibody. The antibodies controlled the isomerization coordinate of trans-stilbene and dynamically coupled this manifold with an active-site residue. A step was taken toward the use of antibody-based photochemical sensors for diagnostic and clinical applications.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Simeonov, A -- Matsushita, M -- Juban, E A -- Thompson, E H -- Hoffman, T Z -- Beuscher, A E 4th -- Taylor, M J -- Wirsching, P -- Rettig, W -- McCusker, J K -- Stevens, R C -- Millar, D P -- Schultz, P G -- Lerner, R A -- Janda, K D -- AI39089/AI/NIAID NIH HHS/ -- GM43858/GM/NIGMS NIH HHS/ -- P01CA27489/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 2000 Oct 13;290(5490):307-13.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Chemistry, The Scripps Research Institute and the Skaggs Institute for Chemical Biology, 10550 North Torrey Pines Road, La Jolla, CA 92037, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11030644" target="_blank"〉PubMed〈/a〉
    Keywords: Antibodies, Catalytic/*chemistry ; Antibodies, Monoclonal/*chemistry ; Binding Sites ; Binding Sites, Antibody ; Chemistry, Physical ; Crystallography, X-Ray ; *Fluorescence ; Haptens ; Ligands ; Microscopy, Fluorescence ; Models, Chemical ; Models, Molecular ; Photochemistry ; Physicochemical Phenomena ; Spectrometry, Fluorescence ; Stereoisomerism ; Stilbenes/*chemistry/*immunology ; Temperature ; Ultraviolet Rays
    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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    Climate warming and disease risks for terrestrial and marine biota (2002)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2002-06-22
    Description: Infectious diseases can cause rapid population declines or species extinctions. Many pathogens of terrestrial and marine taxa are sensitive to temperature, rainfall, and humidity, creating synergisms that could affect biodiversity. Climate warming can increase pathogen development and survival rates, disease transmission, and host susceptibility. Although most host-parasite systems are predicted to experience more frequent or severe disease impacts with warming, a subset of pathogens might decline with warming, releasing hosts from disease. Recently, changes in El Nino-Southern Oscillation events have had a detectable influence on marine and terrestrial pathogens, including coral diseases, oyster pathogens, crop pathogens, Rift Valley fever, and human cholera. To improve our ability to predict epidemics in wild populations, it will be necessary to separate the independent and interactive effects of multiple climate drivers on disease impact.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Harvell, C Drew -- Mitchell, Charles E -- Ward, Jessica R -- Altizer, Sonia -- Dobson, Andrew P -- Ostfeld, Richard S -- Samuel, Michael D -- New York, N.Y. -- Science. 2002 Jun 21;296(5576):2158-62.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Ecology and Evolutionary Biology, Cornell University, Ithaca, NY 14853, USA. cdh5@cornell.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/12077394" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Animals, Domestic ; *Animals, Wild ; Bacterial Physiological Phenomena ; *Climate ; Communicable Diseases, Emerging/epidemiology/etiology/transmission/veterinary ; Disease Outbreaks ; Disease Vectors ; *Ecosystem ; Fungi/physiology ; Humans ; *Infection/epidemiology/etiology/transmission/veterinary ; Parasites/physiology ; *Plant Diseases/etiology ; Risk Factors ; Seasons ; Seawater ; Temperature ; Virus Physiological Phenomena
    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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    Maps of subsurface hydrogen from the high energy neutron detector, Mars Odyssey (2002)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2002-06-01
    Description: After 55 days of mapping by the High Energy Neutron Detector onboard Mars Odyssey, we found deficits of high-energy neutrons in the southern highlands and northern lowlands of Mars. These deficits indicate that hydrogen is concentrated in the subsurface. Modeling suggests that water ice-rich layers that are tens of centimeters in thickness provide one possible fit to the data.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Mitrofanov, I -- Anfimov, D -- Kozyrev, A -- Litvak, M -- Sanin, A -- Tret'yakov, V -- Krylov, A -- Shvetsov, V -- Boynton, W -- Shinohara, C -- Hamara, D -- Saunders, R S -- New York, N.Y. -- Science. 2002 Jul 5;297(5578):78-81. Epub 2002 May 30.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Institute for Space Research, Moscow 117997, Russia.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/12040089" target="_blank"〉PubMed〈/a〉
    Keywords: Atmosphere ; Cosmic Radiation ; Extraterrestrial Environment ; *Hydrogen ; *Ice ; *Mars ; Models, Theoretical ; *Neutrons ; Spacecraft ; Spectrometry, Gamma ; Spectrum Analysis ; 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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    Climate change and latitudinal patterns of intertidal thermal stress (2002)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2002-11-02
    Description: The interaction of climate and the timing of low tides along the West Coast of the United States creates a complex mosaic of thermal environments, in which northern sites can be more thermally stressful than southern sites. Thus, climate change may not lead to a poleward shift in the distribution of intertidal organisms, as has been proposed, but instead will likely cause localized extinctions at a series of "hot spots." Patterns of exposure to extreme climatic conditions are temporally variable, and tidal predictions suggest that in the next 3 to 5 years "hot spots" are likely to appear at several northern sites.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Helmuth, Brian -- Harley, Christopher D G -- Halpin, Patricia M -- O'Donnell, Michael -- Hofmann, Gretchen E -- Blanchette, Carol A -- New York, N.Y. -- Science. 2002 Nov 1;298(5595):1015-7.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉University of South Carolina, Department of Biological Sciences and Marine Sciences Program, Columbia, SC 29208, USA. helmuth@biol.sc.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/12411702" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Bivalvia/*physiology ; *Body Temperature ; *Climate ; *Ecosystem ; Environment ; Geography ; Pacific Ocean ; Pacific States ; Seasons ; *Seawater ; Temperature ; *Water Movements
    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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    Paleoclimate. Corals, chemistry, and climate (2002)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2002-04-16
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Schrag, Daniel P -- Linsley, Braddock K -- New York, N.Y. -- Science. 2002 Apr 12;296(5566):277-8.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Laboratory for Geochemical Oceanography, Department of Earth and Planetary Sciences, Harvard University, Cambridge, MA 02138, USA. schrag@eps.harvard.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11951026" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Calcium/analysis ; Calcium Carbonate/*chemistry ; Chemical Precipitation ; Climate ; Cnidaria/*chemistry/growth & development/physiology ; Eukaryota/*physiology ; Oceans and Seas ; Photosynthesis ; Seasons ; *Seawater ; Strontium/analysis ; *Symbiosis ; 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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  • 9
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    A heat-sensitive TRP channel expressed in keratinocytes (2002)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2002-05-23
    Description: Mechanical and thermal cues stimulate a specialized group of sensory neurons that terminate in the skin. Three members of the transient receptor potential (TRP) family of channels are expressed in subsets of these neurons and are activated at distinct physiological temperatures. Here, we describe the cloning and characterization of a novel thermosensitive TRP channel. TRPV3 has a unique threshold: It is activated at innocuous (warm) temperatures and shows an increased response at noxious temperatures. TRPV3 is specifically expressed in keratinocytes; hence, skin cells are capable of detecting heat via molecules similar to those in heat-sensing neurons.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Peier, Andrea M -- Reeve, Alison J -- Andersson, David A -- Moqrich, Aziz -- Earley, Taryn J -- Hergarden, Anne C -- Story, Gina M -- Colley, Sian -- Hogenesch, John B -- McIntyre, Peter -- Bevan, Stuart -- Patapoutian, Ardem -- New York, N.Y. -- Science. 2002 Jun 14;296(5575):2046-9. Epub 2002 May 16.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Genomics Institute of the Novartis Research Foundation, San Diego, CA 92121, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/12016205" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Animals, Newborn ; Blotting, Northern ; CHO Cells ; Capsaicin/*analogs & derivatives/pharmacology ; *Cation Transport Proteins ; Cell Line ; Cells, Cultured ; Cloning, Molecular ; Cricetinae ; Epidermis/cytology/innervation/metabolism ; Ganglia, Spinal/metabolism ; *Hot Temperature ; Humans ; In Situ Hybridization ; Ion Channels/chemistry/genetics/*metabolism ; Keratinocytes/*metabolism ; Membrane Potentials ; Mice ; Molecular Sequence Data ; Nerve Endings/physiology ; Neurons/physiology ; Patch-Clamp Techniques ; RNA, Messenger/genetics/metabolism ; Ruthenium Red/pharmacology ; Signal Transduction ; Spinal Cord/metabolism ; TRPV Cation Channels ; Temperature
    Print ISSN: 0036-8075
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  • 10
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    Antarctic Sea ice--a habitat for extremophiles (2002)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2002-01-26
    Description: The pack ice of Earth's polar oceans appears to be frozen white desert, devoid of life. However, beneath the snow lies a unique habitat for a group of bacteria and microscopic plants and animals that are encased in an ice matrix at low temperatures and light levels, with the only liquid being pockets of concentrated brines. Survival in these conditions requires a complex suite of physiological and metabolic adaptations, but sea-ice organisms thrive in the ice, and their prolific growth ensures they play a fundamental role in polar ecosystems. Apart from their ecological importance, the bacterial and algae species found in sea ice have become the focus for novel biotechnology, as well as being considered proxies for possible life forms on ice-covered extraterrestrial bodies.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Thomas, D N -- Dieckmann, G S -- New York, N.Y. -- Science. 2002 Jan 25;295(5555):641-4.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉School of Ocean Sciences, University of Wales-Bangor, Menai Bridge, Anglesey, UK, LL59 5EY. d.thomas@bangor.ac.uk〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11809961" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Antarctic Regions ; *Bacterial Physiological Phenomena ; Biotechnology ; *Ecosystem ; Environment ; Eukaryota/*physiology ; Exobiology ; Freezing ; *Ice ; Light ; *Seawater/microbiology ; Sodium Chloride ; Temperature ; Ultraviolet Rays
    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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