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  • 1
    Electronic Resource
    Electronic Resource
    Terrestrial influences on the Shiraho fringing reef, Ishigaki Island, Japan: high carbon input relative to phosphate (2000)
    Springer
    Coral reefs 19 (2000), S. 172-178 
    Details
    ISSN: 1432-0975
    Keywords: Key words Carbon budget ; Nutrients ; Total carbon dioxide ; Fringing reef ; Ground water
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Geosciences
    Notes: Abstract Measurements of CO2 system parameters and nutrients showed the potential influence of terrestrial inputs on the carbon budget of a fringing coral reef on Ishigaki Island, Japan. Land-derived freshwaters, including river and ground water, make a relatively large contribution (0.5–1.2% by volume) to the water circulation of the reef. These terrestrial waters exhibit extremely high fugacity of CO2 (fCO2 up to 6400 μatm), reflecting enrichments in total alkalinity and dissolved inorganic carbon. Since the dissolved inorganic C:P ratio is anomalously high in terrestrial waters compared with the mean C:P ratios of primary production, excess carbon could be released into the atmosphere. Terrestrial inputs deliver a large quantity of C relative to P. The study site was a source of CO2 at the time of measurement. Such a situation is likely to prevail all year round, and it may occur elsewhere.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s003380000093
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Glucose dilution can detect fluid redistribution following phentolamine infusion in dogs (2000)
    Springer
    Intensive care medicine 26 (2000), S. 1131-1138 
    Details
    ISSN: 1432-1238
    Keywords: Key words Phentolamine ; Measurement techniques ; Glucose ; Indocyanine green ; Fluid redistribution
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Objective: We have recently reported that the initial distribution volume of glucose (IDVG) reliably measures the central extracellular fluid (ECF) volume in the presence of fluid gain or loss. However, it is not clear if IDVG consistently reflects central-ECF volume when redistribution of fluid occurs in the absence of fluid gain or loss. This study was designed to investigate changes in fluid volumes during phentolamine infusion in dogs. Design: Prospective animal study. Setting: Institutional animal research laboratory. Subjects: Fourteen anesthetized and ventilated mongrel dogs. Interventions: Anesthetized animals were mechanically ventilated and received infusions of normal saline (n = 7) or phentolamine (10 μg kg min) (n = 7). Plasma volume was estimated using the indocyanine green (ICG) dilution method (PV-ICG) and IDVG was calculated using a one-compartment model by simultaneous administration of ICG 0.5 mg/kg and glucose 100 mg/kg before, during, and after infusion of either drug. Measurements and results: PV-ICG during infusion was not different between groups. However, IDVG significantly decreased (P 〈 0.05) following phentolamine infusion when compared with normal saline infusion. Conclusion: Our results suggest that IDVG rather than PV-ICG consistently measures central extracellular fluid volume, even when redistribution of fluid occurs.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s001340051328
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    Paper (German National Licenses)
    Fulltext
  • 3
    Electronic Resource
    Electronic Resource
    A new hydrous phase δ-AlOOH synthesized at 21 GPa and 1000 °C (2000)
    Springer
    Physics and chemistry of minerals 27 (2000), S. 689-693 
    Details
    ISSN: 1432-2021
    Keywords: Key words Aluminum oxide hydroxide ; Hydrous mineral ; High-pressure ; Transition zone
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Geosciences , Physics
    Notes: Abstract  A new phase of AlOOH (tentatively called δ-AlOOH) was synthesized at 21 GPa and 1000 °C and its crystal structure was identified by a powder X-ray diffraction method. Rietveld refinement revealed that this aluminum oxide hydroxide has an orthorhombic unit cell, a = 4.7134(1) Å, b = 4.2241(1) Å, c = 2.83252(8) Å, V = 56.395 (5) Å3, and Z = 2 in the space group of P21 nm. A calculated density is 3.533 g cm−3, which is about 4.48 and 15.04% denser than that of diaspore and boehmite, respectively. The δ-[Al0.86Mg0.07Si0.07]OOH is also stable at 21 GPa and 1000 °C, coexisting with majorite and phase egg, and its cell parameters are a = 4.710(1) Å, b = 4.215(1) Å, c = 2.839(1) Å, and V = 56.37(1) Å3.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s002690000120
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
    Fulltext
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