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  • 1990-1994  (4)
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  • 1
    Electronic Resource
    Electronic Resource
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 68 (1990), S. 5169-5175 
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Polycrystalline α-Al2O3 and yttria-stabilized ZrO2 substrates were coimplanted with 175-keV Mo+ and 74-keV S+ at doses of 1×1017 and 74-keV S+ and 2×1017 cm−2, respectively. An amorphous SiO2 substrate was coimplanted with 175-keV Mo+ and 74 keV S+ at doses of 4.97×1016 and 1.02×1017 cm−2, respectively. The energies of Mo+ and S+ ions were chosen to obtain a nearly overlapping depth profiles in all three substrates. Transmission electron microscopy, Rutherford backscattering, and Auger electron spectroscopy techniques were used to characterize the ion-implanted materials. The formation of MoS2 phase was observed in the as-implanted condition as well as after annealing at 700 °C in all substrates. Thermodynamic calculations were performed to predict the equilibrium binary phase formed in Al2O3, ZrO2, and SiO2 under the present implantation and annealing conditions. The predictions agree with the experimental findings.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Bulletin of environmental contamination and toxicology 52 (1994), S. 878-885 
    ISSN: 1432-0800
    Source: Springer Online Journal Archives 1860-2000
    Topics: Energy, Environment Protection, Nuclear Power Engineering , Medicine
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Springer
    Theoretical and applied climatology 50 (1994), S. 83-92 
    ISSN: 1434-4483
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Physics
    Notes: Summary The electrical effects due to monsoon clouds in conjunction with the VLF atmospherics data have been extensively analyzed. The cloud distribution and rainfall pattern during the SW monsoon period are examined. The diurnal curves of rainfall show that the maximum rain generally occurs in the afternoon hours between 13 to 18 IST. The coefficient of variation (CV) of monsoon rainfall plotted against rainfall amount reveals that CV decreases with increasing rainfall amounts upto about 40 inches. The differences in the mean dry bulb temperature as well as mean relative humidity values at the standard levels between strong and weak monsoon are studied. The monthly median of the hourly average together with the respective upper and lower decile values of atmospherics have been considered. Also, the frequency dependence of afternoon maximum (or late afternoon minimum) to morning minimum in the sferics level is taken into account to determine the seasonal variation. During monsoon months the sferics level with higher cloud amount (⩾4 okta) increases considerably but the width of the sferics is reduced. The results are interpreted by considering the activity of the sources involved at such times.
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Springer
    The European physical journal 22 (1992), S. 699-700 
    ISSN: 1434-6079
    Keywords: 32.70.Fw
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The radiative lifetimes of three levels belonging to the 5d configuration of KrII have been measured. The high frequency deflection technique with a delayed coincidence single photon counting arrangement has been employed. The lifetimes of the 5d 2 F 5/2 and 5d 4 F 5/2 levels have been measured for the first time.
    Type of Medium: Electronic Resource
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