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  • 1
    Electronic Resource
    Electronic Resource
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 58 (1991), S. 249-250 
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Epitaxial hexagonal GdSi≈1.7 was grown by in situ vacuum annealing of 50 and 250 nm Gd layers on 〈111〉 silicon. The epitaxy was investigated by x-ray and electron diffraction measurements.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 64 (1994), S. 1679-1680 
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: The solid phase reaction of gadolinium thin film and silicon substrate was investigated in lateral growth geometry with the help of periodic titanium protective stripes by optical microscopy. In the lateral reaction zone the shape of the interface between gadolinium and Gd silicide was very complicated and showed pattern formation. This silicide growth can be described as a kinetic process modified by the structure of the Gd film in contrast to the previously proposed simple nucleation.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Springer
    Bulletin of experimental biology and medicine 117 (1994), S. 411-414 
    ISSN: 1573-8221
    Keywords: immunocytotherapy ; fetal tissue transplantation
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract The clinical applications of theoretical immunology are not numerous. The authors demonstrate present-day immunocytotherapeutic approaches to fetal tissue transplantation widely used in medicine. Results of therapy by injections of lymphokine-activated killer cells in combination with interleukin-2, T-cell vaccines, and genetically transformed T cells are presented.
    Type of Medium: Electronic Resource
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  • 4
    ISSN: 1432-119X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary DNA staining methods based on aspecific interactions with dye molecules have been replaced by an immunofluorescent approach to measure DNA replication. Biotin-11-dUTP was incorporated into permeable thymocytes isolated after emetine or cyclosporin A treatment of mice. Active sites of DNA replication were amplified based on biotin-avidin interaction and verified under fluorescent microscope. Cytometry of fluorescent images allow the direct measurement of replicating DNA without aspecific detection of total cellular DNA. Cytometric analysis of replication revealed that emetine acts at the early S phase, while cyclosporin A blocks in vivo DNA synthesis at mid S phase.
    Type of Medium: Electronic Resource
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  • 5
    ISSN: 1434-601X
    Keywords: 23.20.Ck ; 2320.Lv ; 27.60.+j
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The β− decay of101Zr has been investigated at the fission-product separators JOSEF and LOHENGRIN. The half-life of101Zr has been determined to 2.5(1) s and a level scheme for101Nb has been established fromγ ray singles as well as X/3-γ and γ—γ coincidence measurements. Conversion coefficients for transitions in101Nb and level half-lives between 10 ps and 2 ns have been determined. Three rotational bands are identified among the low-lying levels with band heads at 0 keV, 206 keV and 208 keV. The bands are probably based on the Nilsson configurations [422 5/2+], [301 3/2−] and [303 5/2−], respectively. The deformation has been determined to βq=0.40(4) and 0.41(8) for the ground state band and the band based on the 206 keV level from the half-lives of the first and second excited members of these bands. This shows that the rapid onset of deformation at N=60 which is typical for the A=100 region of neutron-rich nuclei, takes also place in the Nb isotopes. Nilsson model calculations describe the experimental data well, especially the several determined transition probabilities including those for E1 transitions from the 206 and 208 keV band heads to the ground state.
    Type of Medium: Electronic Resource
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  • 6
    ISSN: 1434-601X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The γ radiation from the ß− decay of the high-spin isomer in98Y has been studied at the separator JOSEF. A main goal was to get insight into the spins of levels in98Zr which have been interpreted as members of an intruder band based on the 02 + state at 854 keV. The measuredγ-γ angular-correlations lead to the assignment of spins of 4 and 3 ℏ to the 2491 and 1844 keV levels, respectively, and contradict their interpretation as the 6+ and 4+ states of the proposed band. For the 2.0s isomer of98Y, the ß{−}-decay properties suggest I=5 with a major configuration [πg9/2,νs1/2(g2 7/2)0].
    Type of Medium: Electronic Resource
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  • 7
    Electronic Resource
    Electronic Resource
    Springer
    Catalysis letters 26 (1994), S. 383-392 
    ISSN: 1572-879X
    Keywords: small Co particles ; photoemission ; DOS
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract Small Co particles were prepared by sputter etching of a 4–5 nm thick “island-like” Co film deposited on Si(111) substrate. The density of states (DOS) of the valence band was measured by means of ultraviolet photoemission (UPS) during the sputter etching to monitor the formation of small Co particles. It was found that at a given thickness of the Co island the Fermi level was shifted by 1.8-1.9 eV toward higher binding energy and theDOS decreased or no states were detectable at the Fermi level. This effect was explained by the formation of small Co particles with electronic structure which is significantly different from that of the bulk Co.
    Type of Medium: Electronic Resource
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  • 8
    Electronic Resource
    Electronic Resource
    Springer
    Journal of radioanalytical and nuclear chemistry 167 (1993), S. 133-137 
    ISSN: 1588-2780
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Energy, Environment Protection, Nuclear Power Engineering
    Notes: Abstract The restart of the recently upgraded research reactor in Budapest is foreseen at the end of this year. A number of fast, thermal and cold neutron beams will serve for research, industrial and educational activities. One of the cold neutron guide end positions will be utilized for neutron capture prompt gamma-ray activation analysis (PGAA). Further development of the PGAA method as well as new applications in environmental research, biology and medicine are planned.
    Type of Medium: Electronic Resource
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  • 9
    Electronic Resource
    Electronic Resource
    Chichester [u.a.] : Wiley-Blackwell
    Surface and Interface Analysis 19 (1992), S. 469-472 
    ISSN: 0142-2421
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Physics
    Notes: The low-temperature oxidation of Gd thin films evaporated on Si substrates and the role of Si native oxide at the interface of Gd silicide growth have been investigated by x-ray diffraction, XPS and RBS. The Gd layer is extremely reactive towards oxygen and is quickly oxidized in air. Its reactivity can be diminished by introducing a small quantity of Si into the Gd film. In the initial stage Si is accumulated mainly at the grain boundaries of the Gd film, thereby blocking the main oxygen diffusion path and preventing Gd2O3 formation. If Si native oxide is initially present, at low temperature the growth of Gd silicide is slowed down but at high temperature Si/SiO2/Gd is easily transformed to Gd2O3.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
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