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  • 1985-1989  (57)
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  • 1
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    Chemical analyses of ODP Hole 105-647A basalts (Table 2) (1989)
    PANGAEA
    In:  Supplement to: Clarke, D B (1989): Petrology and geochemistry of basalts from ODP Leg 105, Hole 647A, Labrador Sea and the Davis Strait area. In: Srivastava, SP; Arthur, M; Clement, B; et al. (eds.), Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 105, 863-884, https://doi.org/10.2973/odp.proc.sr.105.175.1989
    Details
    Publication Date: 2024-01-09
    Description: Basalt samples recovered from the lowermost 37 m of Leg 105 Hole 647A in the Labrador Sea are fine- to medium grained, have microphenocrysts of clinopyroxene, and show little evidence of alteration. Chemically, these rocks are low potassium (0.01-0.09 wt% K20), olivine- to quartz-normative tholeiites that are also depleted in other incompatible elements. In terms of many of the incompatible trace elements, the Labrador Sea samples are similar both to iV-type midocean ridge basalts (MORBs) and to the terrestrial Paleocene volcanic rocks in the Davis Strait region of Baffin Island and West Greenland. However, significant differences are found in their strontium and neodymium isotope systematics. Hole 647A samples are more depleted in epsilon-Nd (+9.3) and are anomalously rich in 87Sr/86Sr (0.7040) relative to the Davis Strait basalts (epsilon-Nd +2.54 to + 8.97; mean 87Sr/86Sr, 0.7034). We conclude that the Hole 647A and Davis Strait basalts may have been derived from a similar depleted mantle source composition. In addition, the Davis Strait magmas were generated from mantle of more than one composition. We also suggest that there is no geochemical evidence from the Hole 647A samples to support or to refute the existence of foundered continental crust in the Labrador Sea.
    Keywords: 105-647A; Albite; Aluminium oxide; Anorthite; Apatite; Barium; Caesium; Calcium oxide; Cerium; Chromium; Copper; Diopside; DRILL; Drilling/drill rig; DSDP/ODP/IODP sample designation; Europium; Gallium; Hafnium; Hypersthene; Illite; Iron oxide, Fe2O3; Iron oxide, FeO; Joides Resolution; Lanthanum; Leg105; Lutetium; Magnesium oxide; Manganese oxide; Montmorillonite; Neodymium; Nickel; Ocean Drilling Program; ODP; Olivine; Orthoclase; Phosphorus pentoxide; Potassium oxide; Quartz; Samarium; Sample code/label; Scandium; Silicon dioxide; Sodium oxide; South Atlantic Ocean; Strontium; Strontium-87/Strontium-86 ratio; Sum; Tantalum; Terbium; Thorium; Titanium dioxide; Uranium; Vanadium; Water in rock; Ytterbium; Yttrium; Zinc; Zirconium; ε-Neodymium
    Type: Dataset
    Format: text/tab-separated-values, 390 data points
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    DATA PANGAEA
  • 2
    Electronic Resource
    Electronic Resource
    Grain Boundaries in Polycrystalline Ceramics (1987)
    Palo Alto, Calif. : Annual Reviews
    Annual Review of Materials Research 17 (1987), S. 57-74 
    Details
    ISSN: 0084-6600
    Source: Annual Reviews Electronic Back Volume Collection 1932-2001ff
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1146/annurev.ms.17.080187.000421
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Synaptogenesis of Grafted Cholinergic Neurons (1987)
    Oxford, UK : Blackwell Publishing Ltd
    Annals of the New York Academy of Sciences 495 (1987), S. 0 
    Details
    ISSN: 1749-6632
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Natural Sciences in General
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1749-6632.1987.tb23680.x
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  • 4
    Electronic Resource
    Electronic Resource
    Comparison of the particle flow in $$q\bar q\gamma $$ and $$q\bar qg$$ events frome + e − annihilations at PETRA (1988)
    Springer
    The European physical journal 39 (1988), S. 1-6 
    Details
    ISSN: 1434-6052
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The particle flow distributions in the event plane of 3-jet $$(e^ + e^ - \to q\bar qg)$$ and of radiative 2-jet $$(e^ + e^ - \to q\bar q\gamma )$$ events are compared at a centre of mass energy of 35 GeV. The number of particles in the angular region opposite to the gluon in $$q\bar qg$$ events is found to be significantly reduced relative to the number of particles in the region opposite to the hard photon in $$q\bar q\gamma $$ events. This depletion is expected from the “string effect” observed in 3-jet events. It can be explained within the framework of QCD as arising from soft gluon interference.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01560384
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  • 5
    Electronic Resource
    Electronic Resource
    Pharmacokinetics of xamoterol after intravenous and oral administration to volunteers (1988)
    Springer
    European journal of clinical pharmacology 34 (1988), S. 469-473 
    Details
    ISSN: 1432-1041
    Keywords: xamoterol ; cardiac failure ; beta1-adrenoceptor partial agonist ; pharmacokinetics ; bioavailability
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Medicine
    Notes: Summary The pharmacokinetics of xamoterol, a β-adrenoceptor partial agonist under clinical evaluation for the treatment of mild to moderate heart failure, have been studied in 12 healthy male subjects. They received 14 mg i.v. and oral doses of 50 and 200 mg as a tablet and 200 mg as a solution in a 4 way cross-over design. After i.v. dosing the elimination half-life was 7.7 h, the total body clearance was 224 ml·min−1 and the volume of distribution at steady-state (Vss) was 48 l. Sixty-two percent of the dose was recovered unchanged in urine. After oral doses, the absolute bioavailability of xamoterol was shown to be 5% irrespective of whether the dose was administered as a tablet or solution. Peak plasma concentrations occurred at about 2 h for the tablet dose and slightly earlier (1.4 h) for the solution. Peak plasma concentration, AUC and urinary recovery of unchanged drug increased in proportion to dose. The apparent elimination half-life after oral doses (16 h) was significantly longer than that observed after an intravenous dose. Despite the low bioavailability, the degree of inter-subject variability of oral bioavailability was small probably indicating that the controlling factor is the hydrophilic nature of the molecule rather than extensive first pass metabolism or poor dissolution of xamoterol from the tablet formulation.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01046704
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  • 6
    Electronic Resource
    Electronic Resource
    Direct observation of fibre fracture in a model composite (1986)
    Springer
    Journal of materials science 5 (1986), S. 903-904 
    Details
    ISSN: 1573-4811
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01729268
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  • 7
    Electronic Resource
    Electronic Resource
    High-temperature deformation of a polycrystalline alumina containing an intergranular glass phase (1985)
    Springer
    Journal of materials science 20 (1985), S. 1321-1332 
    Details
    ISSN: 1573-4803
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract The high-temperature creep and flexural deformation of a model alumina-glass ceramic is reported over the temperature range in which the glass phase softens (from a viscosity of ~107 to ~103 P). Under both loading conditions the deformation is accompanied by extensive cavitational damage throughout the material. The cavitation is inhomogeneously distributed and at high stresses can be localized into bands. In addition, crack propagation at high temperature results in the formation of a cavitational zone on either side of the fracture and measurements of its size are presented as a function of deformation temperature. On the basis of the microstructural observations of the deformed material, the sequence by which isolated cavities grow and link up prior to failure, is described.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01026328
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  • 8
    Electronic Resource
    Electronic Resource
    Determination of reactor biomass by acoustic resonance densitometry (1986)
    New York, NY [u.a.] : Wiley-Blackwell
    Biotechnology and Bioengineering 28 (1986), S. 1241-1249 
    Details
    ISSN: 0006-3592
    Keywords: Chemistry ; Biochemistry and Biotechnology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Acoustic resonance densitometry (ARD) is reported as a method suitable not only for precise investigations into changes of specific gravity in bioreactor media but also as a technique able to provide an accurate wide range and direct determination of cellular mass in fermentation processes. It is further shown that this method can replace present optical procedures, minimizing dilution errors and operator involvement and is suitable for development as an on-line biomass monitoring system.
    Additional Material: 9 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/bit.260280816
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  • 9
    Electronic Resource
    Electronic Resource
    On-line monitoring of cell mass in mammalian cell cultures by acoustic densitometry (1989)
    New York, NY [u.a.] : Wiley-Blackwell
    Biotechnology and Bioengineering 33 (1989), S. 1379-1384 
    Details
    ISSN: 0006-3592
    Keywords: Chemistry ; Biochemistry and Biotechnology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Acoustic resonance densitometry (ARD) provides a highly reproducible and stable method for on-line measurement of culture biomass density. The technique provides a direct determination of changes in relative density of culture medium and cell mass. At cell concentrations higher than 106 cells mL-1this method can replace cell counts and provide a continuous measure of total cell mass. In cultures of hybridomas or U937 human lymphoma cells, the ARD value correlates well with cell number except when the average cell size changes during culture. It is argued that cell mass determined by ARD rather than cell number should be used as the basis for measurements of specific biological activity.
    Additional Material: 8 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/bit.260331103
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  • 10
    Electronic Resource
    Electronic Resource
    Enhanced sedimentation of mammalian cells following acoustic aggregation (1989)
    New York, NY [u.a.] : Wiley-Blackwell
    Biotechnology and Bioengineering 34 (1989), S. 559-562 
    Details
    ISSN: 0006-3592
    Keywords: Chemistry ; Biochemistry and Biotechnology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Process Engineering, Biotechnology, Nutrition Technology
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/bit.260340415
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