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RESIDUAL LIFETIME EVALUATION OF EXISTING NUCLEAR FACILITIES REQUIRES DETAILED INFORMATION REGARDING CONDITION OF CONTAINMENT AND SUPPORT STRUCTURES. CURRENT NONDESTRUCTIVE METHODS FOR SUBSURFACE EVALUATION OF REINFORCED CONCRETE USE COMPLEX EQUIPMENT AND RELY HEAVILY ON INTERPRETATION BY THE OPERATOR. A RESEARCH EFFORT IS PROPOSED TO EXAMINE THE USE OF COMPUTERIZED TOMOGRAPHIC IMAGING FOR LOCATING ...

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BECAUSE OF THE DISCOVERY OF ER-DOPED FIBER AMPLIFIER (EDFA), THE USE OF OPTICAL FIBERS OPTIMIZED FOR 1550 NM IN TELECOMMUNICATION NETWORKS IS GAINING FAVOR AS A METHOD OF ADDING CAPACITY, PROVIDING LONGER COMMUNICATION LINKS, AND SYSTEM ECONOMY. FOR SIMILAR REASONS 1550 NM SYSTEMS ALSO ARE BEING CONSIDERED FOR NEW LOCAL EXCHANGE NETWORKS INTENDED TO ADD ROUTING DIVERSITY TO HIGH-SPEED COMPUTER NE ...

MEASUREMENT OF TRACE AMOUNTS OF WATER VAPOR IS CRITICAL TO INDUSTRIAL PROCESSES SUCH AS SEMICONDUCTOR FABRICATION, WHERE MOISTURE IN GASES MUST OFTEN BE BELOW A FEW PARTS PER BILLION (PPB). WATER IN TRACE AMOUNTS IS ALSO CRITICAL IN HIGH ALTITUDE ATMOSPHERIC CHEMISTRY, AFFECTING GLOBAL CLIMATE CHANGE AND OZONE DEPLETION. CURRENT INSTRUMENTS FOR MEASURING TRACE MOISTURE ARE SEVERELY LIMITED. SOM ...

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