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  • 2000-2004  (2)
  • 1950-1954  (2)
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  • 1
    Electronic Resource
    Electronic Resource
    First physics results from the MAST Mega-Amp Spherical Tokamak : The 42nd annual meeting of the division of plasma physics of the American Physical Society and the 10th international congress on plasma physics (2001)
    [S.l.] : American Institute of Physics (AIP)
    Physics of Plasmas 8 (2001), S. 2101-2106 
    Details
    ISSN: 1089-7674
    Source: AIP Digital Archive
    Topics: Physics
    Notes: First physics results are presented from MAST (Mega-Amp Spherical Tokamak), one of the new generation of purpose built spherical tokamaks (STs) now commencing operation. Some of these results demonstrate, for the first time, the novel effects of low aspect ratio, for example, the enhancement of resistivity due to neo-classical effects. H-mode is achieved and the transition to H-mode is accompanied by a tenfold steepening of the edge density gradient which may enable the successful application of electron Bernstein wave heating in STs. Studies of halo currents show that these less than expected from conventional tokamak results, and measurements of divertor power loading confirm that most of the power flows to the outer strike points, easing the power handling on the inner points (a critical issue for STs). © 2001 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1352595
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  • 2
    Electronic Resource
    Electronic Resource
    Growth of young cuttlefish, Sepia officinalis (Linnaeus 1758) at the upper end of the biological distribution temperature range (2001)
    Oxford, UK : Blackwell Science Ltd
    Aquaculture research 32 (2001), S. 0 
    Details
    ISSN: 1365-2109
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Individual growth rates, feeding rates (%BWd−1) and food conversions for cuttlefish (S. officinalis) hatchlings and juveniles were determined during this study. A flow-through system was used. Water temperature reached 30 °C during the hottest part of the day, gradually decreasing to 25 °C during the night; salinity varied between 37 ± 3 ppt and lights were kept on for 14 h day−1. Hatchlings were placed in separate compartments with a water volume of 1.2 L. Juvenile cuttlefish (from 0.5 to 25 g) were placed in bigger baskets, with a water volume of 5.2 L. Water flow was 120 L h−1. The biggest cuttlefish used in these experiments (〉 25 g) were gathered in groups of five and placed in circular tanks (water volume of 250–300 L). Thus, results obtained in this case are means and not individual data. During the first 10, 20, 30 and 40 days, mean growth rates (of all individuals sampled by age group) decreased consistently (11.8 ± 4.1, 9.8 ± 1.8, 8.1 ± 2.2 and 7.3 ± 0.7%BW−1 respectively); in similar fashion, mean feeding rates decreased with age group (33.7 ± 13.5, 22.0 ± 7.9, 17.3 ± 3.9 and 16.7%BWd−1 respectively). Mean food conversions varied between 3.6 and 2.5 between the age groups. When grouping results by weight class, similar patterns occur, as growth and feeding rates decrease consistently as cuttlefish grow bigger. Highest mean growth and feeding rates are obtained by hatchlings (〈 0.1 g) with 12.4 ± 4.5 and 35.3 ± 15.1%BWd−1, respectively, while the lowest growth and feeding rates were recorded for the largest animals, between 15 and 25 g (3.4 ± 1.1 and 10.8 ± 4.1%BWd−1 respectively). For these weight classes, mean food conversions varied between 2.7 ± 0.9 and 3.8 ± 2.8.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1046/j.1365-2109.2001.00631.x
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  • 3
    Electronic Resource
    Electronic Resource
    Premature Oviposition in the Hen (1953)
    [s.l.] : Nature Publishing Group
    Nature 172 (1953), S. 1098-1099 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] During similar experiments, reported in this communication, it was noticed that if a loop of suture silk was placed in the shell gland in the manner described by Huston and Nalbandov1, the production of normal hard-shelled eggs was replaced by the production of soft-shelled eggs in more than half ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/1721098b0
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  • 4
    Electronic Resource
    Electronic Resource
    The determination of metals in organic compounds (1952)
    Springer
    Microchimica acta 40 (1952), S. 76-103 
    Details
    ISSN: 1436-5073
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Zusammenfassung Eine vollständige Übersicht über Methoden zur Bestimmung von Metallen in organischen Verbindungen wird gegeben. Für folgende Metalle werden Methoden beschrieben: Natrium, Kalium, Lithium, Rubidium, Cäsium, Magnesium, Calcium, Barium, Strontium, Bor, Thallium, Silicium, Germanium, Antimon, Wismut, Zinn, Blei, Selen, Tellur, Silber, Gold, Osmium, Platin, Kupfer, Cadmium, Zink, Quecksilber, Vanadium, Chrom, Eisen, Kobalt, Nickel, Niob, Tantal, Rhenium, Titan, Zirkonium und Uran.
    Abstract: Résumé On donnait une revue complète des méthodes valables pour le dosage des métaux dans des substances organiques. Des méthodes sont décrites pour les métaux suivants: sodium, potassium, lithium, rubidium, caesium, magnésium, calcium, barium, strontium, bore, thallium, silicium, germanium, antimoine, bismuth, étain, plomb, sélénium, tellure, argent, or, osmium, platine, cuivre, cadmium, zinc, mercure, vanadium, chrome, fer, cobalt, nickel, niobe, tantale, rhenium, titane, zirconium et urane.
    Notes: Summary A comprehensive review of the methods available for the determination of metals in organic compounds has been made. The following metals have been considered:—sodium, potassium, lithium, rubidium, caesium, magnesium, calcium, barium, strontium, boron, thallium, silicon, germanium, antimony, bismuth, tin, lead, selenium, tellurium, silver, gold, osmium, platinum, copper, cadmium, zinc, mercury, vanadium, chromium, iron, cobalt, nickel, niobium, tantalum, rhenium, titanium, zirconium and uranium.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01413316
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