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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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Hill method of secular perturbations and determination of zero-rank effects in nonsingular vectorial elements of motion of planets, comets, and satellites
Modification of Poincare-Von Zeipel method for canonical perturbation theory
Iterative solution of perturbation equations
Resolving perturbed wave functions into unperturbed Hamiltonians
Laser output electronic tuning by intra-cavity acousto-optic filter perturbation
Perturbation theory for reduced density matrices
Exchange perturbation theories of weak intermolecular forces
Exchange perturbation theories applied to delta function model of molecular hydrogen ion, discussing EL-HAV second order energy at large internuclear separations
Motion near collision singularity in perturbed two body problem, applying method to boundedness proof for Sperling cluster energy
Numerical results for perturbed downstream flow field resulting from entropy wave interaction with normal shock and oblique shock generated by wedge flow
Degenerate and nondegenerate energy states and wave functions formulated by Rayleigh- Schroedinger perturbation theory
Perturbation rotational levels in triplet states of CO emission spectra attributed to resonance fluorescence process involving optically forbidden transitions
Periodic orbits in highly perturbed dynamical systems, studying characteristic curves of various families in galactic-type potential
Radiative transfer in inhomogeneous atmospheres using simplified matrix equations in perturbation method
Polarized radiation transfer through inhomogeneous semiinfinite atmosphere by matrix perturbation method, giving nonlinear singular integral equation
Linearized perturbation theory for quasi-static equilibrium stellar interior models, obtaining correction through bidirectional quadrature
Perturbation theory of supersonic steady anisentropic flow with radiative heat transfer using hyperbolic characteristic coordinates
Planetary motion zero-rank effects numerical integration, using Hill secular perturbation method and trace of dyadics