Equatorial scintillations experienced during Apollo 11 support, 12-24 July 1969
Signal fading attributed to equatorial scintillations during Apollo 11 recovery support period, 12-24 July 1969
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Signal fading attributed to equatorial scintillations during Apollo 11 recovery support period, 12-24 July 1969
Equatorial scintillations experienced during Apollo 13 support by ATS 1 - 30 Mar., to 18 Apr., 1970
Flash lamp-pumped organic dye scintillator lasers using coaxial Xe-filled lamp, tabulating blue- violet organic liquid lasers characteristics
Stellar scintillation saturation at large zenith angles interpreted in terms of combined dispersion and aperture filtering
Ionospheric scintillations of lunar radar echo components isolation by CW Doppler shift or coherent pulse time delay techniques
Liquid scintillator neutron spectrometer using pulse shape discrimination and two parameter analyzer
Weak-scattering limit in thin screen model of interplanetary scintillations of radio sources involving solar wind fluctuations at Fresnel scale
Satellite scintillation and diffraction pattern scale size distribution from ionospheric irregularities
Phase and amplitude scintillations of microwave signals over elevated atmospheric path for obtaining atmospheric density profiles
Scintillation, polarization, and multipath effects on VHF propagation between synchronous satellites and aircraft - telecommunication systems
Stellar scintillation saturation at large zenith angles, examining atmospheric dispersion and multiple scattering roles
Hard solar X-ray spectra measurements, reinterpreting OSO 3 scintillation counter response due to pulse pile-up
Interstellar scintillation index and fading time of pulsar signals at 2388 MHz
Laboratory model for radio star scintillation and other diffraction phenomena by thin weak random phase changing screen including earth atmosphere or solar wind
Cygnus A two component radio source scintillations power spectrum observation by dipole array
Astronomical telescopes image motion, distortion and scintillation, examining atmospheric refractive index and density/temperature variation effects
An empirical approach to modeling the electron-density irregularities in the F layer of the earth's ionosphere that are primarily responsible for scintillation of transatmospheric VHF-UHF signals has been devised and tested. The work was directed toward two major goals: first, development of a worldwide model for describing the rms fluctuation in signal strength to be expected on an arbitrary satellite-to-earth communication link under average ionospheric conditions; and, second, investigation of the feasibility of similar modeling for description of the complete first-order distribution of signal strength.
Left ventricular end-diastolic volume was determined by cardiac visualization after peripheral venous injection of a gamma-emitting isotope in 10 patients with organic heart disease. The left ventricular end-diastolic volume measured by the isotope method consistently averaged 9% less than that determined by the X-ray method. The mean difference in left ventricular end-diastolic volume was 21 ml. Excellent correlation between the two methods was observed. It is pointed out that peripheral venous scintillation angiocardiography compares well with left ventriculography in the determination of left ventricular end-diastolic volume in man.