Returned lunar samples porphyrin analysis
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Rho, J. H.↗
Engineering topics
Cohen, E. A.
Publications and source records attributed to Cohen, E. A..
Fluorometric search for porphyrins in Apollo 15 exhaust-contaminated surface fines and deep drill cores and Apollo 16 surface fines
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Rho, J. H.↗
Analyses of the returned lunar surface fines for porphyrins.
Apollo 11, 12, and 14 lunar surface fines were examined for the presence of porphyrins by a sensitive fluorescent technique. The returned lunar samples studied were of bulk fines collected from the Sea of Tranquillity by Apollo 11, from the Ocean of Storms by Apollo 12, and from the nonmare Fra Mauro formation by Apollo 14. It was found that no porphyrins are present in lunar surface fines which have been extensively irradiated and sorted.
Rho, J. H.↗
Spectrofluorometric search for porphyrins in Apollo 14 surface fines.
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Rho, J. H.↗
Precise audio-frequency markers for nuclear magnetic resonance spectra
System calibrates and records the responses of a nuclear magnetic resonance spectrometer. Calibration markers which have a highly stable frequency source are utilized to maintain frequency stability.
Cohen, E. A.↗
A method for providing precise sweep calibrations simultaneous with the recording of magnetic resonance spectra
Precise sweep calibrations and simultaneous spectrum recording for high resolution nuclear magnetic resonance spectroscopy
Cohen, E. A.↗
Microwave spectrum, vibration-rotation interaction, molecular structure, and dipole moment of 1-methylpentaborane /9/.
Microwave spectra of 1-methylpentaborane /9/ noting vibration-rotation interactions, molecular structure and dipole moment
Beaudet, R. A.↗