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  • 1995-1999  (3)
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  • 1
    Electronic Resource
    Electronic Resource
    A comparison of structure and magnetoresistance in Fe/(Ag–Cu) films (abstract) : The 40th annual conference on magnetism and magnetic materials (1996)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 79 (1996), S. 6299-6299 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Films of 12 Fe/(Ag–Cu) bilayers were prepared to have either granular or multilayer structures on glass substrates with a 50 A(ring) Cu buffer layer. A magnetic Fe layer of 15 A(ring) was deposited by e-beam evaporation, and a nonmagnetic Ag–Cu layer of 20 A(ring) by thermal coevaporation with various Ag/Cu ratio. As the nonmagnetic layer composition changed from Ag to Cu, roughness of the film surface varied from more than 100 A(ring) to less than 10 A(ring), measured with atomic force microscopy. Regularity of multilayer structure was evident in the Fe/Cu film from a superlattice peak at around 2theta=2.5 deg by Cu Kα x-ray diffraction. The peak weakened as the Ag content increased in the nonmagnetic layer, and completely disappeared at Ag/Cu(approximately-greater-than)1, which indicated that granular structure became dominant. Pendelloesung peaks at 2theta=1 to 2 deg had a similar composition dependency. The structural change was confirmed with cross-sectional transmission microscopy, too. The deposited structure is explained in terms of surface tension and wettability of each element. Increasing Cu content decreases the surface tension and increases the wettability of the nonmagnetic layer. Heat treated film structures are explained with identical terms. Change of magnetoresistance is discussed in part by connectivity of the nonmagnetic layer. From the discussion, a reasoning is given to the effect of annealing on the magnetoresistance of the films. © 1996 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.362043
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    A role for glucagon-like peptide-1 in the central regulation of feeding (1996)
    [s.l.] : Nature Publishing Group
    Nature 379 (1996), S. 69-72 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] We report that ICV administration of GLP-1 reduces food intake in fasted rats, with greater effect at higher doses (Fig. Ib). ICV injection of GLP-1 in rats at the beginning of the dark (feeding) phase also results in a profound decrease in feeding (Fig. la). When administered intraperitoneally up ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/379069a0
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Rheological study on poly-D(-)(3-hydroxybutyrate) and its blends with poly(ethylene oxide) (1995)
    Stamford, Conn. [u.a.] : Wiley-Blackwell
    Polymer Engineering and Science 35 (1995), S. 1636-1642 
    Details
    ISSN: 0032-3888
    Keywords: Chemistry ; Chemical Engineering
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Aspects of thermal, morphological, and rheological properties of biodegradable poly-D(-)(3-hydeoxybutyrate) (PHB) blended with poly(ethylene oxide) (PEO) have been studied. Thermal properties and morphology of the blends were examined by scanning electron microscopy and differential scanning calorimetry, respectively. A rotational theometer with parallel plate geometry was also adopted to investigate the rheological properties of these blends. In addition, dynamic ciscoelasticity was measured by a Rheovibron as functions of time and temperature. From these measurements, PHB and PEO were observed to be miscible in the melt state. In the case of the blend systen 80/20 PHB/PEO by weight, the vacant domains of the PHB were filled with PEO particles, and this morphological state enhanced the rheological properties. Furthermore, PHB and its blends were found to have high crystallinities, but to have unstable thermal behavior about Tm.
    Additional Material: 13 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/pen.760352010
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    Paper (German National Licenses)
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