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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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Flux, energy distribution and density of ions and electrons in magnetosphere plasma during solar activity period determined by OGO-C electrostatic probes
Terrestrial free oscillation periods and attenuation variations related to physical parameters for checking earth models
Resonant periodic orbits applied to find main orbital types in various galactic models
Periodic solutions for functional differential equations with time lag, developing bifurcation theory representing delay equation extension
Periodic solutions to plane three body problem obeying Newton gravitation law applied to earth-moon-sun system
Sun perturbed earth-moon triangular point investigated for stable periodic coplanar orbits
Asymptotic stability and generalized forces in time varying periodic systems, discussing relation between natural frequencies or linearized system eigenvalues
Stability of periodic orbits in elliptic restricted three body problem
Tidal oscillations, shorter period gravity waves and shear waves
Atraumatic cardiographic measurement of left ventricle isometric relaxation period in healthy men
Circadian activity periods and human body temperature phase relations, discussing tests in bunker and climatic chamber
Effect of periodic shock-fronted pressure waves on instantaneous heat flux at end wall of shock tube
Possible applications of continuity equation plasma oscillations to other periodic astrophysical phenomena
Interaction of interplanetary medium with magnetosphere in period of solar activity decrease
Generalized averaging method for linear differential equations with almost periodic coefficients
Problem solving of periodic motion using trigonometric series
Periodic behavior of solutions of nonlinear Volterra system
Periodic cubic differential equation of motion solved with special reference to location of fixed points and stability of solutions