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Search indexed NASA NTRS and DOE OSTI research on propulsion, heat transfer, battery materials and energy systems. Follow report and document links to the original sources.
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This study examines the relationship between P-impedance (Z P ) and S-impedance (Z S ) and key petrophysical properties, including clay volume (V Cl ), porosity (ϕ), water saturation (S W ), and bulk water volume (V W ), to improve the characterization of CO 2 storage sites.
Electrophysiological patterns and cerebral impedance characteristics in orienting and discriminative behavior
Automatic tuning systems for antennas with varying impedance
Impedance of electrically short antenna in ionosphere
Effect of cavity on impedance and radiation properties of log periodic antenna-cavity assembly
Radio frequency impedance probe measurements of ionospheric electron densities
Rf impedance probe measurements of ionospheric electron density obtained by aerobee-hi rocket
Investigation of the use of rf impedance probes for the measurement of ionospheric electron densities
Ionospheric electron density profiles obtained by the cw propagation technique and by rf impedance probe techniques
Mechanical impedance simulation in shock and vibration testing
Small signal impedance of short cylindrical dipole antenna in magnetoplasma based on quasi- static electromagnetic theory
Measurement of low frequency impedance of Langmuir probe in plasma to obtain electron density and temperature
Mutual impedance effects in electronically-scanned antenna arrays
Impedance function bounds on positive-negative RLC networks containing ideal transformers
Cylindrical dipole antenna field in compressible isotropic plasma, assuming triangular current distribution and deriving input impedance formula
Antenna impedance behavior in plasma, related to radio astronomy, emphasizing electrically small antennas used in space vehicles
Impedance of uniform electric current loop in anisotropic magnetoionic plasma, using Maxwell equations and Fourier transform
Impedance functions of two-element-kind networks