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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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At least 469 records · Page 26
All sourcesNASA NTRSDOE OSTI
NASA NTRS1970

Electronic sleep analyzer

Electronic instrument automatically monitors the stages of sleep of a human subject. The analyzer provides a series of discrete voltage steps with each step corresponding to a clinical assessment of level of consciousness. It is based on the operation of an EEG and requires very little telemetry bandwidth or time.

Frost, J. D., Jr.↗
NASA NTRS1970

Electron energy analyzer

Electrostatic deflection analyzer with three spherically concentric grids allows production of electrons within a small volume at the center of the inner sphere. By applying a retarding potential between the middle and inner spheres, the energies of the electrons can be measured.

Samson, J. A. R.↗
NASA NTRS1969

A multipurpose frequency-response analyzer

Closed loop frequency response analyzer with steepest descent computing procedure to obtain in-phase and quadrature signal components in linear or nonlinear systems

Kohr, R. H.↗
NASA NTRS1971

Automatic amino acid analyzer

Analyzer operates unattended or up to 15 hours. It has an automatic sample injection system and can be programmed. All fluid-flow valve switching is accomplished pneumatically from miniature three-way solenoid pilot valves.

Berdahl, B. J.↗
NASA NTRS1971

Improved charged-particle analyzer - A concept

Device utilizes concept that charged-particle analysis is achievable by applying sinusoidal voltage across two conductive deflection plates with predetermined curvature and constant spacing to define selective passageway for charged particles to be analyzed. Four advantages of improved device are cited.

Dimeff, J.↗