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  • Articles: DFG German National Licenses  (34)
  • 2000-2004  (23)
  • 1950-1954  (11)
  • 1
    Electronic Resource
    Electronic Resource
    Limits of Flammability of Paraffin Hydrocarbons in Air (1951)
    s.l. : American Chemical Society
    Industrial & engineering chemistry 43 (1951), S. 2120-2124 
    Details
    ISSN: 1520-5045
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/ie50501a041
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Flammability of Carbon Disulfide in Mixtures of Air and Water Vapor (1953)
    s.l. : American Chemical Society
    Industrial & engineering chemistry 45 (1953), S. 2079-2080 
    Details
    ISSN: 1520-5045
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/ie50525a042
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    s.l. : American Chemical Society
    Industrial & engineering chemistry 46 (1954), S. 55-55 
    Details
    ISSN: 1520-5045
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/ie50539a418
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    Minimum Spontaneous Ignition Temperatures of Combustibles in Air (1954)
    s.l. : American Chemical Society
    Industrial & engineering chemistry 46 (1954), S. 2173-2178 
    Details
    ISSN: 1520-5045
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/ie50538a047
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    Paper (German National Licenses)
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  • 5
    Electronic Resource
    Electronic Resource
    Determination of anisotropy fields in recording media (2000)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 87 (2000), S. 5711-5713 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: This work describes an experimental study which reviews the various techniques that can be used for determination of anisotropy fields in recording media. At the present time this topic is of considerable importance due to the need to understand the detailed mechanisms of magnetization reversal and the factors that control the switching field distribution in recording media. We have used a metal-particle-based tape material and have employed various magnetic techniques for the determination of the apparent anisotropy field, HK. The techniques included hysteresis loops measured in a direction transverse to the texture direction of the tapes, single-point detection in the successive derivatives of the magnetization with respect to the field, transverse susceptibility measurement, and the variation of the bulk coercivity with temperature. We find the temperature variation of coercivity produces values of HK far smaller than values determined by other methods due to orientation effects. General agreement is seen for the other techniques mentioned and results for samples with differing degrees of texture show that the apparent anisotropy field of the grains as measured by these techniques is influenced greatly by orientation effects. © 2000 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.372498
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    Paper (German National Licenses)
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  • 6
    Electronic Resource
    Electronic Resource
    rf ion source development for neutron generation and for material modification : Papers from the Ninth International Conference on Ion Sources (2002)
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 73 (2002), S. 934-936 
    Details
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: rf driven multicusp ion sources have been successfully used in various different applications. Lately the Plasma and Ion Source Technology Group at Lawrence Berkeley National Laboratory has been developing a rf ion source for neutron production and a high current density cw-operated ion source for SIMOX (Separation by Implantation of Oxygen)-application. The group has developed a small ion source, which consists of a quartz plasma chamber, an external rf-antenna, an extraction electrode, and a target assembly, all in a tube that is approximately 25 cm in length and 5 cm in diameter. Another neutron generator currently under development is a multiaperture, high power generator. The neutron generator currently operates at 1% duty cycle, 80 kV, and 150 mA of deuterium beam. The neutron yield measured from the generator is 1.6×107 n/s. For oxygen implantation, the group has been developing a source which could provide a high percentage of O+ at high current density using cw operation. A dual-antenna has been developed for the source to ensure reliable long life operation. The development of these sources will be discussed in this article. © 2002 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1430519
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  • 7
    Electronic Resource
    Electronic Resource
    Determination of Nitrate in Plant Materials (1953)
    s.l. : American Chemical Society
    Analytical chemistry 25 (1953), S. 806-808 
    Details
    ISSN: 1520-6882
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/ac60077a038
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    Paper (German National Licenses)
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  • 8
    Electronic Resource
    Electronic Resource
    The Vapor Pressures d- and dl-Dimethyl Tartrate (1954)
    s.l. : American Chemical Society
    The @journal of physical chemistry 〈Washington, DC〉 58 (1954), S. 666-667 
    Details
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/j150518a016
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    Paper (German National Licenses)
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  • 9
    Electronic Resource
    Electronic Resource
    Patterning ferromagnetism in Ni80Fe20 films via Ga+ ion irradiation (2001)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 78 (2001), S. 1589-1591 
    Details
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: We demonstrate that focused Ga+ ion irradiation can comprehensively modify the ferromagnetic properties of Ni80Fe20 thin films. Magneto-optic Kerr effect measurements at room temperature and magnetoresistance measurements at temperatures between 1.5 and 270 K characterized the irradiation effects. Irradiation steadily reduced the films' room temperature coercivity, and a dose of 1.0×1016 ions/cm2 at 30 keV was found sufficient to cause a loss of ferromagnetism at room temperature in films of thickness up to 15.5 nm. In situ end-point detection and postirradiation atomic force microscopy confirmed that the sputtering which accompanied doses up to 1.0×1016 ions/cm2 did not compromise the protective caps on these Ni80Fe20 films. We therefore conclude that the modification of ferromagnetic properties occurred primarily because of direct Ga+ ion implantation. From these results, we speculate that focused Ga+ ion irradiation could be a convenient tool for the nanoscale patterning of magnetic properties in 3d transition metal thin films. © 2001 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1351519
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    Paper (German National Licenses)
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  • 10
    Electronic Resource
    Electronic Resource
    Ballistic transport in a GaAs/AlxGa1−xAs one-dimensional channel fabricated using an atomic force microscope (2001)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 78 (2001), S. 3466-3468 
    Details
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: We fabricate a one-dimensional constriction in a shallow, δ-doped GaAs/AlxGa1−xAs two-dimensional electron gas, by locally oxidizing the surface using an atomic force microscope. The channel exhibits ballistic conduction with up to seven conductance plateaus, quantized in units of 2e2/h. The dependence of the device conductance on dc bias voltage reveals the energy separation of the first two subbands to be ΔE1,2=5.5(±0.3) meV, which allows ballistic conduction to be observed up to a temperature of 20 K. A lateral electric field, combined with the hard-walled confinement due to the insulating lines, allows manipulation of the electron wave function in a way which is not possible with surface-gated devices. © 2001 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1374225
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    Paper (German National Licenses)
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