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  • 1
    Electronic Resource
    Electronic Resource
    On the drag effect of a refueling pellet (1981)
    Springer
    Journal of fusion energy 1 (1981), S. 253-257 
    Details
    ISSN: 1572-9591
    Keywords: Pellet refueling ; drag effect ; penetration depth ; ablation models
    Source: Springer Online Journal Archives 1860-2000
    Topics: Energy, Environment Protection, Nuclear Power Engineering
    Notes: Abstract A refueling pellet is subjected mainly to two kinds of drags: (1) inertial drag caused by the motion of the pellet relative to the surrounding plasma, and (2) ablation drag caused by an uneven ablation rate of the front and the rear surface of the pellet in an inhomogeneous plasma. Computational results showed that for reasonable combinations of pellet size and injection speed, the drag effect is hardly detectable for plasma conditions prevailing in current large tokamaks.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01050358
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    Paper (German National Licenses)
    Fulltext
  • 2
    Electronic Resource
    Electronic Resource
    Hydrophobic chromatography of β-galactosidase (1980)
    New York, NY [u.a.] : Wiley-Blackwell
    Biotechnology and Bioengineering 22 (1980), S. 377-399 
    Details
    ISSN: 0006-3592
    Keywords: Chemistry ; Biochemistry and Biotechnology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: The hydrophobic interaction of β-galactosidase with Sepharose 4B substituted with 3,3′-diaminodipropylamine was studied in both batch and column experiments. The equilibrium and the binding rate constants were determined for different phosphate buffer concentrations. The equilibrium constants exhibit a hysteresis effect, i.e., desorption constants are less than adsorption constants, and the higher the ionic strength to start the desorption, the larger the effect. The rate data are not satisfactorily described by a simple reversible first-order model. The column chromatographic data are semiquantitatively described by a local equilibrium theory without axial dispersion or intraparticle diffusion.
    Additional Material: 11 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/bit.260220211
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Spectrographic determination of trace rare earth elements in high purity thorium (1974)
    Springer
    Fresenius' Zeitschrift für analytische Chemie 270 (1974), S. 187-190 
    Details
    ISSN: 1618-2650
    Keywords: Best. von Seltenen Erden in Thorium ; Spektralanalyse ; Gleichstrombogen
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Summary An emission spectrographic determination of fifteen rare earth elements in thorium was developed, the spectrographic procedure was carried out using low current d.c. arc and using Sc as an internal standard. The rare earth impurities were concentrated with cation-exchange resin. Very high sensitivity was achieved with 1 g sample. The detection limits range from 0.01 μg for Yb to 0.5 μg for Pr and Nd.
    Notes: Zusammenfassung 15 Seltene Erdelemente konnten in Thorium bestimmt werden. Zur Anwendung kam ein Gleichstrombogen niederer Stromstärke. Als innerer Standard diente Scandium. Zur Anreicherung der Seltenen Erden wurde ein Kationenaustauscher verwendet. Mit 1 g-Proben konnten hohe Empfindlichkeiten erzielt werden. Die Nachweisgrenzen liegen im Bereich von 0,01 μg (Yb) bis 0,5 μg (Pr, Nd).
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00445953
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    Non-linear seismic response and liquefaction (1978)
    New York, NY [u.a.] : Wiley-Blackwell
    International Journal for Numerical and Analytical Methods in Geomechanics 2 (1978), S. 381-404 
    Details
    ISSN: 0363-9061
    Keywords: Engineering ; Engineering General
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Architecture, Civil Engineering, Surveying , Geosciences
    Notes: The essential cause of the growth of pore pressure during cyclic loading is identified as an ‘autogenous’ shrinkage or densification of the solid phase of the soil and this is related to a strain path parameter. Introduction of this ‘shrinkage’ coupled with an elasto-plastic behaviour of the soil skeleton allows a full non-linear dynamic analysis to be conducted up to the point of structural failure for any earthquake input. Explicit time marching procedures are used. The procedure outlined is applicable to all problems of complex geometry and for conditions of undrained or partially drained behaviour at a moderate computational cost.
    Additional Material: 11 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/nag.1610020407
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  • 5
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    Seasonality of the mass concentration and chemical composition of aerosols around an urbanized basin in East Asia (2017)
    Wiley-Blackwell
    Details
    Publication Date: 2017-01-27
    Description: This study investigated seasonal variations in the mass concentration and chemical composition of ambient aerosols observed at three stations (coastal, mountainous and downtown sites) in northern Taiwan from March 2009 to February 2012. The results show that the major aerosol components include ammonium, sulfate, nitrate, sea salt, dust, organic carbon (OC) and elemental carbon (EC), whereas the mass fraction of each species depends on the sampling location and season. A significant correlation (r = 0.7 – 0.8) was observed in aerosol concentrations measured at the respective stations, indicating that aerosol concentrations were dominated by regional scale factors. Ammonium, sulfate and nitrate consistently reached respective peak values in the spring in conjunction with dust particle levels. This shows that the transport of dust and particulate air pollutants from the Asian continent has affected the atmospheric environment in this area. Distinct seasonality was observed for sea salt and secondary organic carbon (SOC): sea salt levels peaked in the autumn, whereas SOC levels peaked in the summer, implying that their sources were regulated by independent seasonal factors. Correlation between sea salt concentration and surface wind speed was derived from coastal measurements and showed a high value for the wind speed sensitivity parameter of around 0.37 for our location. In addition, it was revealed that the SOC concentration in aerosols was positively correlated with oxidant photolysis index (O x *UVB), suggesting that the SOC seasonality was dominated by hydroxyl radical production.
    Print ISSN: 0148-0227
    Topics: Geosciences , Physics
    Published by Wiley-Blackwell on behalf of American Geophysical Union (AGU).
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