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  • Articles: DFG German National Licenses  (15)
  • Electronic Resource  (15)
  • 2000-2004  (3)
  • 1975-1979  (5)
  • 1930-1934  (1)
  • 1925-1929  (1)
  • 1910-1914  (4)
  • 1905-1909  (1)
Source
  • Articles: DFG German National Licenses  (15)
Material
  • Electronic Resource  (15)
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Year
  • 1
    Electronic Resource
    Electronic Resource
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 76 (2000), S. 2916-2918 
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: InAs quantum dots grown in a GaAs matrix are investigated using capacitive transient spectroscopy and transmission electron microscopy (TEM). Two deep levels are detected which are energetically too deep to be the intrinsic electron levels of the quantum dots. Both TEM as well as the detailed non-exponential behavior of the electron capture indicate that the traps do not result from dislocations in the GaAs matrix. We propose that the measured trap levels are due to point defects in or near the quantum dots. © 2000 American Institute of Physics.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 72 (2001), S. 3344-3348 
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: The design of a sputter deposition chamber for the in situ study of film growth by synchrotron x-ray diffraction and reflectivity is reported. Four x-ray windows, sealed with low cost, nonhazardous Kapton, enable scattering both in the horizontal as well as in the vertical scattering planes. The chamber fits into a standard six-circle goniometer from Huber which is relatively widespread in synchrotron laboratories. Two miniature magnetron and additional gas inlets allow for the deposition of compound films or multilayers. Substrate heating up to 650 °C and different substrate bias voltage are possible. The performance of the chamber was tested with the deposition of high quality TiN films of different thicknesses. © 2001 American Institute of Physics.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Springer
    European food research and technology 27 (1914), S. 683-685 
    ISSN: 1438-2385
    Source: Springer Online Journal Archives 1860-2000
    Topics: Process Engineering, Biotechnology, Nutrition Technology
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Springer
    Journal of molecular medicine 11 (1932), S. 780-782 
    ISSN: 1432-1440
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Type of Medium: Electronic Resource
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  • 5
    ISSN: 1432-2307
    Keywords: Key words Dedifferentiated chondrosarcoma ; p53 mutation ; p53 LOH
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract  We investigated a dedifferentiated chondrosarcoma of a 61-year-old woman with an osteosarcomatous high-grade component for p53 alteration. The low-grade cartilaginous and the high-grade osteosarcomatous components of the tumor were macrodissected and evaluated separately by immunohistochemistry and molecular biology. We used PCR-SSCP analysis and direct sequencing to screen exons 4–8 for p53 mutations. The p53 intron 1-polymorphism was investigated for loss of heterozygosity. A functionally relevant p53 missense mutation in codon 193 of exon 6 (A-to-T transversion) with loss of wild-type allele was detected only in the dedifferentiated component. Using the monoclonal antibody DO-1, immunohistochemistry failed to show p53 overexpression. This evidence of p53 mutation may be regarded as at least a co-factor that ”switched” the preexisting low-grade conventional chondrosarcoma to a highly malignant dedifferentiated tumor.
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    Springer
    Microchimica acta 68 (1977), S. 279-288 
    ISSN: 1436-5073
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Summary There is given a synopsis about the characteristics of new-fashioned exchangers based on cyclic polyethers-a field of activity with a great future. With the application of the described measuring methods the determinations of the separated compounds are possible to the range ofμg and pg. Enrichments of traces can be easily realized.
    Notes: Zusammenfassung Eine Übersicht über die Eigenschaft neuartiger Austauscher mit cyklischen Polyäthern als Ankergruppen-ein Arbeitsgebiet, das noch stark ausbaufähig ist-wurde gegeben. Unter Verwendung der beschriebenen Meßanordnungen sind Bestimmungen der getrennten Verbindungen bis in den Mikro- und Spurenbereich (μg bis pg) möglich. Spurenanreicherungen lassen sich gut durchführen.
    Type of Medium: Electronic Resource
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  • 7
    ISSN: 1432-1750
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Schluss Zusammenfassend kann man also als Ergebnis der Untersuchungen folgendes aufstellen: 1. Eine günstige Einwirkung einer Behandlung mit Alttuberkulin, in der Weise wie sie etwa in der Humanmedizin angewendet wird, konnte ich bei der Impftuberkulose des Meerschweinchens ebensowenig wie Haupt und frühere Untersucher beobachten, weder was die Lebensdauer noch was die klinischen und anatomischen Veränderungen betrifft. 2. Behandlung mit ziemlich grossen Dosen Rosenbachschen Tuberkulins scheint in solchen Fällen, die schon an sich zu sehr chronischem Verlauf neigen, noch eine weitere Verlangsamung des Krank heitsablaufes herbeiführen zu können, also immerhin günstig, wenn auch nicht heilend wirken zu können. 3. Beide Mittel werden von den Tieren in grossen Mengen vertragen. Eine immunisierende Wirkung haben beide nicht. Selbstverständlich berechtigt dieses Ergebnis keineswegs dazu, etwa bei der menschlichen Tuberkulose die Versuche mit dem Rosenbachschen Präparat aufzugeben, ebenso wie man ja das Alttuberkulin trotz seiner Unwirksamkeit gegen die Meerschweinchen tuberkulose in der Humanmedizin mit Nutzen verwendet.
    Type of Medium: Electronic Resource
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  • 8
    Electronic Resource
    Electronic Resource
    Springer
    Mathematische Annalen 215 (1975), S. 289-291 
    ISSN: 1432-1807
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics
    Type of Medium: Electronic Resource
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  • 9
    Electronic Resource
    Electronic Resource
    Springer
    Colloid & polymer science 3 (1908), S. 80-83 
    ISSN: 1435-1536
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
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  • 10
    Electronic Resource
    Electronic Resource
    Springer
    The European physical journal 51 (1928), S. 355-373 
    ISSN: 1434-601X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Zusammenfassung Zwei Eisensorten, schwedischer Bandstahl und 50%ige Fe-Ni-Legierung der Fr. Krupp-A. G. wurden wechselnder Magnetisierung bei Frequenzen von etwa 500, 1500 und 2550 Hertz unterworfen und die Hysteresiskurven punktweise auf-genommen. Eine Vergleichung mit den statischen Kurven bei gleicher maximaler Magnetisierung ergab ein mit wachsender Frequenz zunehmendes Zurückbleiben der Magnetisierung hinter den statischen Werten. Die Vergrößerung der Hysteresis-verluste betrug für den Bandstahl etwa 3% bei 500 und 8 bis 9% bei 2550 Hertz, für die Fe-Ni-Legierung etwa 20% bei 500 und 60% bei 1500 Hertz. In roher Annäherung ist für eine gegebene Eisensorte scheinbare Vergrößerung der Koerzitivkraft proportional der maximalen Magnetisierungsgeschwindigkeit ∂B/∂t, unabhägig von der Feldamplitude und der Frequenz.
    Type of Medium: Electronic Resource
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