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THIS RESEARCH WILL EXPLORE THE POSSIBILITIES AND RESULT IN THE DESIGN OF AN ACOUSTIC ENERGY GENERATOR FOR GEOPHYSICAL EXPLORATION IN INACCESSIBLE MOUNTAINOUS TERRAIN. THIS EFFORT WILL DETERMINE THE MAGNITUDE OF ACOUSTIC SIGNAL REQUIRED AND WILL DEVELOP A TECHNIQUE FOR COUPLING THE SIGNAL GENERATOR TO THE EARTH. THE COUPLING TECHNIQUE WILL EXAMINE FORCES OTHER THAN GRAVITY TO ENSURE THAT THE SIGNAL ...

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THE CONCEPTUAL DESIGN OF A MAN-PORTABLE GAS CHROMATOGRAPH MASS SPECTROMETER (GCMS) IS OUTLINED, TOGETHER WITH ITS APPLICATION AS A DETECTOR OF A BROAD RANGE OF HAZARDOUS ENERGY-RELATED SUBSTANCES. THE PRINCIPAL BENEFITS OF SUCH AN INSTRUMENT ARE ITS PORTABILITY WHICH ALLOWS MEASUREMENTS TO BE MADE ON-SITE, ITS RUGGED, SIMPLE OPERATION, AND ITS SENSITIVITY AND ABILITY TO GIVE UNAMBIGUOUS IDENTIFICA ...

AN ON-LOAD TAP CHANGER ALLOWS CHANGING TAPS WITHOUT INTERRUPTING POWER TO THE LOAD. CURRENTLY AVAILABLE TAP CHANGER FOR THIS APPLICATION ARE MECHANICAL TYPE WITH CONTACTS THAT ARC AND PIT EVERY TIME A CHANGE IS MADE. SOLID STATE TAP CHANGER WOULD OVERCOME THESE SHORTCOMINGS IN ADDITION WOULD ALLOW REMOTE TAP CHANGING, INTEGRATING TAP CHANGING IN PROCESS CONTROL SYSTEM, READILY CHANGE THE TAPS TO S ...