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  • 2000-2004  (6)
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Year
  • 1
    Electronic Resource
    Electronic Resource
    Measurements of the electron energy distribution function in an Ar/CF4 inductively coupled plasma (2001)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 90 (2001), S. 2158-2161 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Measurements of the electron energy distribution function (eedf) of a low-pressure inductively coupled plasma operated in a mixture of Ar and CF4 are reported. The measurement method was laser Thomson scattering. Extensive test were performed in order to verify that any perturbations caused by the laser did not affect the measurements. The eedf was measured for different concentrations of CF4 gas, and the results indicated that it was non-Maxwellian when even small amounts of CF4 gas were present. This dependence was attributed partially to the effect of electron-molecule vibrational excitation collisions. © 2001 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1398775
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Highly oriented lead zirconium titanate thin films: Growth, control of texture, and its effect on dielectric properties (2001)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 90 (2001), S. 2703-2710 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Highly oriented lead–zirconium–titanate (PZT) thin films have been grown by reactive rf-magnetron sputtering using multielemental metallic targets. The effects of deposition parameters on the film composition and texture evolution have been established. The partial pressure of oxygen (O2) and the heating rates during postdeposition anneal have been identified as critical parameters for the growth of highly oriented (111) and (100) PZT films. In order to control the growth of (111) and (100) orientation it was important to understand the interplay between these two parameters. Texture evolution mechanisms for the growth of oriented films have been proposed based on the effect of O2/argon flow and heating rates on the crystallization kinetics. The effects of crystal orientation on the dielectric and ferroelectric properties of PZT films have also been investigated. © 2001 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1385580
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Mechanical aging behavior of oriented Pb(Mg1/3Nb2/3)O3–PbTiO3 and Pb(Zn1/3Nb2/3)O3–PbTiO3 single crystals (2001)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 79 (2001), S. 2624-2626 
    Details
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: The aging characteristics of 〈001〉-oriented Pb(Zn1/3Nb2/3)O3–PbTiO3 (PZN-PT) and Pb(Mg1/3Nb2/3)O3–PbTiO3 (PMN-PT) single crystals have been studied under electrical and mechanical drive. A significant increase in hysteretic loss and decrease in piezoelectric constant were observed under continuous excitation. Systematic investigations of piezoelectric aging were then performed using a novel mechanical fatigue method. Piezocrystals were placed between two magnetostrictive plates and clamped. Periodic longitudinal compressive stresses were generated by applying magnetic fields. At both short and long times, the piezoelectric constant was found to decrease slowly. However, in an intermediate range, a pronounced decrease was observed over a narrow time range. The dynamics of aging have been shown to scale to a hierarchical relaxation process, typical of disordered systems such as random field and glassy states. © 2001 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1410335
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  • 4
    Electronic Resource
    Electronic Resource
    Observations of bi-Maxwellian and single Maxwellian electron energy distribution functions in a capacitively coupled radio-frequency plasmas by laser Thomson scattering (2001)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 78 (2001), S. 3187-3189 
    Details
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Electron energy distribution functions in low-pressure capacitively coupled radio-frequency argon discharges were measured using the technique of laser Thomson scattering. It was found that the distribution functions changed from a bi-Maxwellian at lower pressures to a single Maxwellian at higher pressures. These measurements provide independent confirmation of probe measurements made in similar discharges. The electron temperature and density of the cold group of electrons were measured with an accuracy of better than 10%. © 2001 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1363695
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  • 5
    Electronic Resource
    Electronic Resource
    Effects of Carbon Content on Wear Property in Pearlitic Steels (2003)
    s.l. ; Stafa-Zurich, Switzerland
    Materials science forum Vol. 426-432 (Aug. 2003), p. 1175-1180 
    Details
    ISSN: 1662-9752
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/02/07/transtech_doi~10.4028%252Fwww.scientific.net%252FMSF.426-432.1175.pdf
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  • 6
    Electronic Resource
    Electronic Resource
    Molecular characterization of Hop latent virus and phylogenetic relationships among viruses closely related to carlaviruses (2000)
    Springer
    Archives of virology 145 (2000), S. 2503-2524 
    Details
    ISSN: 1432-8798
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary.  The complete nucleotide sequence of the hop latent virus (HpLV) genome was determined. The viral RNA genome is 8,612 nucleotides long, excluding the poly(A) tail, and contains six open reading frames (ORFs), which encode putative proteins of 224-kDa (ORF 1), 25-kDa (ORF 2), 11-kDa (ORF 3), 7-kDa (ORF 4), 34-kDa (ORF 5), and 12-kDa (ORF 6). ORF 5 encodes the coat protein as demonstrated by N-terminal sequencing of three proteolytic peptides derived from the virus particle. The genome organization of HpLV is similar to that of other species in the genus Carlavirus, and the overall sequence of HpLV is more similar to that of Potato virus M than to sequences of other carlaviruses reported to date. The amino acid sequences of the putative methyltransferase, RNA helicase, and RNA-dependent RNA polymerase encoded in ORF 1 and an ‘accessory’ helicase encoded in ORF 2 of the HpLV genome were compared with those of viruses in the ‘tymo’ lineage: the genera Carlavirus, Potexvirus, Allexivirus, Foveavirus, Trichovirus, Capillovirus, Vitivirus, and Tymovirus. The phylogenetic relationships among the viruses in these genera are discussed. This is the first molecular characterization of a carlavirus infecting hop plants.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s007050070005
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