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  • 1
    Electronic Resource
    Electronic Resource
    The Biology of Hyphomicrobium and other Prosthecate, Budding Bacteria (1981)
    Palo Alto, Calif. : Annual Reviews
    Annual Review of Microbiology 35 (1981), S. 567-594 
    Details
    ISSN: 0066-4227
    Source: Annual Reviews Electronic Back Volume Collection 1932-2001ff
    Topics: Biology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1146/annurev.mi.35.100181.003031
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  • 2
    Electronic Resource
    Electronic Resource
    Evaluation methods and evaporation conditions for low-resistivity contacts on high Tc superconductors (1989)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 66 (1989), S. 5514-5517 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Low-resistivity contacts to bulk high Tc superconductors have been prepared by resistive evaporation with values of ρs(Ω cm2) as low as 10−10 (77 K) for Ag/YBaCuO, 10−9 (77 K) for Ag/TlPbBaCaCuO, and 10−7 (60 K) for Ag/BiCaSrCuO. ρs has been found to be improved by increasing the length of a preevaporation step. This effect has been further investigated by secondary ion-mass spectrometry analysis on several Ag/Si samples. Both three-terminal and four-terminal methods have been used to determine ρs; the three-terminal method shows less dependency on the sample/contact geometry for measurements taken above Tc.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.343704
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  • 3
    Electronic Resource
    Electronic Resource
    Klein–Gordon equation and reflection of Alfvén waves in nonuniform media (1992)
    New York, NY : American Institute of Physics (AIP)
    Physics of Fluids 4 (1992), S. 13-18 
    Details
    ISSN: 1089-7666
    Source: AIP Digital Archive
    Topics: Physics
    Notes: A new analytical approach is presented for assessing the reflection of linear Alfvén waves in smoothly nonuniform media. The general one-dimensional case in Cartesian coordinates is treated. It is shown that the wave equations, upon transformation into the form of the Klein–Gordon equation, display a local critical frequency (Ωc) for reflection: At any location in the medium, reflection becomes strong as the wave frequency descends past this characteristic frequency set by the local nonuniformity of the medium. This critical frequency is given by the transformation as an explicit function of the Alfvén velocity (VA), and its first (V'A) and second (V(large-closed-square)A) derivatives, and hence as an explicit spatial function. The transformation thus directly yields, without solution of the wave equations, the location in the medium at which an Alfvén wave of any given frequency becomes strongly reflected and has its propagation practically cut off. The local critical frequency is the square root of the larger coefficient of the zeroth-order term in the two transformed wave equations; which equation has the larger coefficient is determined by the local nonuniformity. Hence, the critical frequency can switch from one equation to the other as the nonuniformity changes. Consequently, it is necessary to transform both wave equations to deduce that the critical frequency is Ωc=((V'A)2+||2VAV(large-closed-square)A||)1/2/2.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.860452
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  • 4
    Electronic Resource
    Electronic Resource
    Second order correction in cavity constitutive parameter measurements with application to anisotropic ferrites (1990)
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 61 (1990), S. 1136-1142 
    Details
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: An analysis is presented to calculate scalar permittivity and tensor permeability for ferrite materials from waveguide transmission cavity data. A correct measurement of the permittivity of ferrites and other high dielectric constant materials, requires an extension of current techniques to a second-order perturbational analysis. This second-order correction offsets an apparent frequency dependent dielectric behavior measured during a multimode cavity measurement. The analysis implies that dimensions of ferrite samples to be used in various waveguides (X-Ka bands) must be reduced to a near 0.015-in. cross-sections to eliminate a coupling of permittivity and permeability measurements.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1141961
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  • 5
    Electronic Resource
    Electronic Resource
    Chemical Processing Wastes. Recovering Fission Products (1958)
    s.l. : American Chemical Society
    Industrial & engineering chemistry 50 (1958), S. 212-216 
    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/ie50578a039
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  • 6
    Electronic Resource
    Electronic Resource
    Recovery of Fission Product Cesium from Acidic Wastes (1959)
    s.l. : American Chemical Society
    Industrial & engineering chemistry 51 (1959), S. 741-744 
    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/ie50594a028
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  • 7
    Electronic Resource
    Electronic Resource
    IMPLICATIONS OF THE VARIABILITY AND POLARIZATION OF BL LAC OBJECTS (1980)
    Oxford, UK : Blackwell Publishing Ltd
    Annals of the New York Academy of Sciences 336 (1980), S. 0 
    Details
    ISSN: 1749-6632
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Natural Sciences in General
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1749-6632.1980.tb15919.x
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  • 8
    Electronic Resource
    Electronic Resource
    The response of an isothermal atmosphere to pressure fluctuations at its base and the five-minute oscillations in the solar photosphere (1974)
    Springer
    Solar physics 36 (1974), S. 321-337 
    Details
    ISSN: 1573-093X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The steady-state vertical-velocity response of an isothermal atmosphere to pressure fluctuations of arbitrary period and horizontal wavelength at its base is derived in the approximation of dissipationless polytropic motion in the atmosphere. It is pointed out that, since only upward modes can be excited in an isothermal atmosphere perturbed from below, the infinite response found by Worrall (1972) at the critical frequency ω g does not occur. The correct behavior of the response is presented in some detail. Comparison of the response of the model, for the case of isothermal osculations, with observed features of the photospheric oscillations indicates that, in addition to the evanescent photospheric oscillations which occur at the compression-wave propagation cut-off frequencies and which have horizontal wavelengths ≳ 3000 km, in the lower photosphere there are also smaller-scale evanescent oscillations which have horizontal wavelengths ≲ 1000 km, periods ranging from 200 to 400 s, amplitudes comparable to that of the larger-scale oscillations, and in which the phase of the vertical velocity oscillation leads the phase of the pressure oscillation.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00151201
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  • 9
    Electronic Resource
    Electronic Resource
    Proceedings of the workshop: The solar constant and the Earth's atmosphere (1976)
    Springer
    Solar physics 46 (1976), S. 377-409 
    Details
    ISSN: 1573-093X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00149862
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  • 10
    Electronic Resource
    Electronic Resource
    On the generation of umbral flashes and running penumbral waves (1973)
    Springer
    Solar physics 30 (1973), S. 403-419 
    Details
    ISSN: 1573-093X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract From a review of the observed properties of umbral flashes and running penumbral waves it is proposed that the source of these periodic phenomena is the oscillatory convection which Danielson and Savage (1968) and Savage (1969) ave shown is likely to occur in the superadiabatic subphotospheric layers of sunspot umbras. Periods and growth rates are computed for oscillatory modes arising in a simple two-layer model umbra. The results suggest that umbral flashes result from disturbances produced by oscillatory convection occurring in the upper subphotospheric layer of the umbra where the superadiabatic temperature gradient is much enhanced over that in lower layers, while running penumbral waves are due to oscillations in a layer just below this upper layer.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00152672
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