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Browse almost 5,000 conference papers authored by our scientists and refine search by topic, location, year, and advanced search.

Filter Total Items: 5519

SURVEY OF ASBESTOS-RELATED DISEASES IN TRADES AND MINING OCCUPATIONS AND IN FACTORY AND MINING COMMUNITIES AS A MEANS OF PREDICTING HEALTH RISKS OF NONOCCUPATIONAL EXPOSURE TO FIBROUS MINERALS. SURVEY OF ASBESTOS-RELATED DISEASES IN TRADES AND MINING OCCUPATIONS AND IN FACTORY AND MINING COMMUNITIES AS A MEANS OF PREDICTING HEALTH RISKS OF NONOCCUPATIONAL EXPOSURE TO FIBROUS MINERALS.

A review based on 36 published epidemiological studies is given of disease patterns that have developed among industrial workers, miners, and millers who had been exposed to dusts of one or more of the commercial asbestos minerals or to dusts from minerals perceived to be asbestos-like. Health data are also reviewed for individuals exposed to asbestos dusts in nonoccupational settings...
Authors
Malcolm Ross

TECHNIQUE FOR ENHANCING DIGITAL COLOR IMAGES BY CONTRAST STRETCHING IN MUNSELL COLOR SPACE. TECHNIQUE FOR ENHANCING DIGITAL COLOR IMAGES BY CONTRAST STRETCHING IN MUNSELL COLOR SPACE.

The Munsell color system can be used to further enhance the appearance of high-quality digital color-composite images. A color-balanced 'standard' color-composite image is first produced using any desired contrast stretching algorithm. The stretched digital data are then transformed into the cylindrical Munsell color space. An enhanced version of a color-composite image is produced by...
Authors
Fred A. Kruse, Gary L. Raines

The significance of flocking in wintering shorebirds: avoidance of predation The significance of flocking in wintering shorebirds: avoidance of predation

No abstract available at this time
Authors
B.E. Kus
By
Ecosystems Mission Area, Western Ecological Research Center (WERC)

THERMAL-INERTIA MAPPING IN VEGETATED TERRAIN FROM HEAT CAPACITY MAPPING MISSION SATELLITE DATA. THERMAL-INERTIA MAPPING IN VEGETATED TERRAIN FROM HEAT CAPACITY MAPPING MISSION SATELLITE DATA.

Thermal-inertia data, derived from the Heat Capacity Mapping Mission (HCMM) satellite, were analyzed in areas of varying amounts of vegetation cover. Thermal differences which appear to correlate with lithologic differences have been observed previously in areas of substantial vegetation cover. However, the energy exchange occurring within the canopy is much more complex than that used...
Authors
Ken Watson, Susanne Hummer-Miller

TOPOLOGICAL STRUCTURING OF RASTER-SCANNED LINE MAP DATA. TOPOLOGICAL STRUCTURING OF RASTER-SCANNED LINE MAP DATA.

The U. S. Geological Survey has a requirement for the collection of large amounts of digital map data from existing graphic map separates. Prototype production techniques have been developed to capture line data from the map separates using a raster-scanning input device. After minimal editing in raster form, the data are converted to 'unstructured' vector form. In order to be processed...
Authors
Robin G. Fegeas, Richard A. Pearsall

U. S. GEOLOGICAL SURVEY ALASKAN GOLD PROJECT. U. S. GEOLOGICAL SURVEY ALASKAN GOLD PROJECT.

The United States Geological Survey has begun a state-wide study of Alaskan gold deposits. The immediate goals are to determine the relationship of gold in placer deposits to possible primary sources, to determine how nuggets form, to contribute to existing knowledge of principles for prospecting for placer deposits, and determine if minerals associated with placer deposits might suggest...
Authors
John C. Antweiler, John Cathrall, Richard Tripp
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