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  • 1
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    Preindustrial to modern interdecadal variability in coral reef pH (2005)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2005-10-01
    Description: The oceans are becoming more acidic due to absorption of anthropogenic carbon dioxide from the atmosphere. The impact of ocean acidification on marine ecosystems is unclear, but it will likely depend on species adaptability and the rate of change of seawater pH relative to its natural variability. To constrain the natural variability in reef-water pH, we measured boron isotopic compositions in a approximately 300-year-old massive Porites coral from the southwestern Pacific. Large variations in pH are found over approximately 50-year cycles that covary with the Interdecadal Pacific Oscillation of ocean-atmosphere anomalies, suggesting that natural pH cycles can modulate the impact of ocean acidification on coral reef ecosystems.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Pelejero, Carles -- Calvo, Eva -- McCulloch, Malcolm T -- Marshall, John F -- Gagan, Michael K -- Lough, Janice M -- Opdyke, Bradley N -- New York, N.Y. -- Science. 2005 Sep 30;309(5744):2204-7.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Research School of Earth Sciences, Australian National University, Canberra, ACT 0200, Australia. pelejero@cmima.csic.es〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/16195458" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Anthozoa/chemistry/*physiology ; Atmosphere ; Boron/analysis ; Carbon Dioxide/analysis ; *Ecosystem ; Hydrogen-Ion Concentration ; Isotopes/analysis ; Pacific Ocean ; Seasons ; *Seawater ; Time Factors
    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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    Movement disorders of aged rats: reversal by dopamine receptor stimulation (1979)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1979-10-26
    Description: When placed in a tank of water, aged rats (24 to 27 months old) showed marked impairments in swimming. Compared with young adult rats (3 to 4 months old), the older animals moved their limbs less vigorously and were less successful in keeping their heads above water. The young, but not old, rats maintained a position nearly horizontal to the water surface and planed across it. These movement dysfunctions of aged rats resemble those seen in young adult animals that have sustained injury to brain dopamine-containing neurons. The swimming impairments of the aged rats were reversed by the dopamine receptor stimulant apomorphine and by the biosynthetic precursor of dopamine, L-dopa. Thus, age-related alterations in brain dopaminergic systems may be responsible for some of the movement disturbances associated with senescence.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Marshall, J F -- Berrios, N -- New York, N.Y. -- Science. 1979 Oct 26;206(4417):477-9.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/504992" target="_blank"〉PubMed〈/a〉
    Keywords: *Aging ; Animals ; Apomorphine/therapeutic use ; Levodopa/therapeutic use ; Male ; Movement Disorders/drug therapy/*physiopathology ; Rats ; Receptors, Dopamine/*physiology ; Swimming ; Time Factors
    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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  • 3
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    High-grade fuels and biomass farming (1980)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1980-11-14
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Weisz, P B -- Marshall, J F -- New York, N.Y. -- Science. 1980 Nov 14;210(4471):808.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17739552" 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
    Published by American Association for the Advancement of Science (AAAS)
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  • 4
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    High-grade fuels from biomass farming: potentials and constraints (1979)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1979-10-05
    Description: The key parameters controlling the productivity and the cost of net high-grade fuel from a system for biomass agriculture and conversion are analyzed. Performance depends sensitively on a "symbiotic" interaction between agronomy and technology. The conditions for obtaining net productivity and costs are explored for U.S. grain alcohol as a reference point. Currently practiced technology consumes more high-grade fuel than it generates. Some potentials and constraints for future systems, including use of other plant species and conversion systems, are explored.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Weisz, P B -- Marshall, J F -- New York, N.Y. -- Science. 1979 Oct 5;206(4414):24-9.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17812429" 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
    Published by American Association for the Advancement of Science (AAAS)
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  • 5
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    Brain dopamine and serotonin receptor sites revealed by digital subtraction autoradiography (1985)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1985-05-03
    Description: Autoradiography combined with image analysis permitted quantitative visualization of dopamine (D2) and serotonin (S2) binding sites in rat brain. Forebrain sections were incubated with tritiated spiroperidol alone or with tritiated spiroperidol plus unlabeled compounds that saturated the D2 or S2 sites. By subtracting the digitized image of an autoradiograph derived from the latter sections from that of the former, the D2 or S2 sites were specifically revealed. The resulting quantitative images demonstrate the differing anatomical distributions of these sites. The D2 site is largely restricted to the striatal complex (caudate-putamen, nucleus accumbens septi, and olfactory tubercle), whereas the S2 site is enriched in layer 5 of motor cortex, the perirhinal and cingulate cortices, and the claustrum.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Altar, C A -- O'Neil, S -- Walter, R J Jr -- Marshall, J F -- AG 00538/AG/NIA NIH HHS/ -- AG00096/AG/NIA NIH HHS/ -- NS 20122/NS/NINDS NIH HHS/ -- New York, N.Y. -- Science. 1985 May 3;228(4699):597-600.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2580352" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Autoradiography/*methods ; Brain/physiology/*radionuclide imaging ; Butaclamol/metabolism ; Computers ; Ketanserin ; Piperidines/metabolism ; Radiographic Image Enhancement/methods ; Rats ; Receptors, Dopamine/*physiology ; Receptors, Serotonin/*physiology ; Spiperone/metabolism ; Sulpiride/metabolism
    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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  • 6
    Electronic Resource
    Electronic Resource
    The sea level in the last interglacial (1976)
    [s.l.] : Nature Publishing Group
    Nature 263 (1976), S. 120-121 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Multiple bay barriers composed of siliceous sand are a common geomorphic feature along the central and northern coasts of New South Wales. Two distinct barrier systems, the Inner Barrier and the Outer Barrier, have been recognised7. The Outer Barrier system is a Holocene feature, that has developed ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/263120a0
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  • 7
    Electronic Resource
    Electronic Resource
    ‘Autogenous’ Strains of ‘ Culex pipiens ’ (Diptera, Culicidæ) (1935)
    [s.l.] : Nature Publishing Group
    Nature 136 (1935), S. 641-641 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] IN a letter published in NATURE of January 5, 1935 (135, 34), we directed attention to the discovery, at Hayling Island (Hampshire), of a ‘strain’ of the mosquito Culex pipiens exhibiting certain abnormal characteristics (notably the ability of the females to lay fertile eggs upon a blood-free ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/136641a0
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  • 8
    Electronic Resource
    Electronic Resource
    Mosquito-Breeding in Static Water Supplies (1942)
    [s.l.] : Nature Publishing Group
    Nature 149 (1942), S. 568-570 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] IN countries such as Great Britain, where neither malaria, yellow fever nor other mosquito-borne diseases are endemic, consideration of the habits of these insects in connexion with war has scarcely ever been necessary. During the War of 1914-18, it is true, quite extensive outbreaks of malaria ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/149568a0
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  • 9
    Electronic Resource
    Electronic Resource
    Holocene growth of a mid-Pacific atoll: Tarawa, Kiribati (1985)
    Springer
    Coral reefs 4 (1985), S. 11-17 
    Details
    ISSN: 1432-0975
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Geosciences
    Notes: Abstract Cores from ten holes, drilled to a maximum depth of 30 m, on Tarawa atoll in the central Pacific have been utilised in a study of the Holocene development of the atoll. Four dominant lithologies, in descending order, are cay rock, unconsolidated sediment, corals and leached limestone. Petrographic and radiometric age analyses indicate that the Holocene reef has developed on a previous (last interglacial) reef; the latter shows the effects of both vadose and phreatic freshwater diagenesis. Hydrological investigations beneath the present islands indicate the presence of freshwater lenses up to 29 m thick; the modern lenses are unrelated to freshwater diagenetic imprints preserved within the limestones. Vertical accretion rates of 5–8 m/1000 years for the Holocene reef section on Tarawa are significantly higher than rates measured for other Pacific atolls. The dated coral sequences suggest a more rapid rate of sea level rise during the early Holocene, and a relatively earlier stabilisation of sea level than has been suggested previously.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00302199
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  • 10
    Electronic Resource
    Electronic Resource
    The impact of spatial and temporal distribution of satellite observations on tropical cyclone data assimilation: Preliminary results (1996)
    Springer
    Meteorology and atmospheric physics 60 (1996), S. 157-163 
    Details
    ISSN: 1436-5065
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geography , Physics
    Notes: Summary Preliminary work gauging the impact of varying the spatial and temporal resolution of Cloud Drift Wind (CDW) data using different assimilation techniques is presented, particularly within the framework of a generalised inverse data assimilation scheme. Results are presented for the NW Pacific and Australian regions. There were three main findings for the cases examined. Firstly, hourly and 12-hourly highdensity CDWs produced lower mean forecast errors (relative to intermittent assimilation) than those produced using operational CDWs from the Global Telecommunication System (GTS). This is consistent with Le Marshall et al. (1994). Secondly, intermittent assimilation was significantly worse than both the nudging and variational procedures. Finally, there was little improvement using the variational as opposed to the nudging scheme when using 12-hourly data insertion and operational winds from the GTS. There, the variational procedure proved to be about 4 per cent superior to the nudging. This result is of note, given the variational procedure takes about an order of magnitude longer to produce the initial field than does nudging, and should be contrasted with an earlier finding by one of the authors (LML) where the variational procedure was found to be clearly superior to the nudging approach (Bennett et al., 1993) where an enhanced CDW field was used.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01029792
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