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36991 results.

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Page 381, results 9501 - 9525

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Publication Extents

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Determining concentrations of 2-bromoallyl alcohol and dibromopropene in ground water using quantitative methods
Sandra Y. Panshin
1997, Open-File Report 97-43
A method for determining levels of 2-bromoallyl alcohol and 2,3-dibromopropene from ground-water samples using liquid/liquid extraction followed by gas chromatography/mass spectrometry is described. Analytes were extracted from the water using three aliquots of dichloromethane. The aliquots were combined and reduced in volume by rotary evaporation followed by evaporation using a...
Concentrations of platinum group elements in 122 U.S. coal samples
C.L. Oman, R. B. Finkelman, S.J. Tewalt
1997, Open-File Report 97-53
Analysis of more than 13,000 coal samples by semi-quantitative optical emission spectroscopy (OES) indicates that concentrations of the platinum group elements (iridium, palladium, platinum, osmium, rhodium, and ruthenium) are less than 1 ppm in the ash, the limit of detection for this method of analysis. In order to accurately determine...
Effects of produced waters at oilfield production sites on the Osage Indian Reservation, northeastern Oklahoma
James K. Otton, Sigrid Asher-Bolinder, Douglass E. Owen, Laurel Hall
1997, Open-File Report 97-28
The authors conducted limited site surveys in the Wildhorse and Burbank oilfields on the Osage Indian Reservation, northeastern Oklahoma. The purpose was to document salt scarring, erosion, and soil and water salinization, to survey for radioactivity in oilfield equipment, and to determine if trace elements and naturally occurring radioactive materials...
Temperature, snowmelt, and the onset of spring season landslides in the central Rocky Mountains
Alan F. Chleborad
1997, Open-File Report 97-27
Snow meltwater (snowmelt) that seeps into the subsurface is a major factor contributing to the development of landslides during the spring in mountainous areas of the Rocky Mountain region. An examination of historical temperature data in relation to spring season landslide occurrences reveals an association between the landslide events and...
1997 flood tracking chart for the Sheyenne River basin
Gregg J. Wiche, Cathy R. Martin, Luverne L. Albright, Geraldine B. Wald
1997, Open-File Report 97-177
The "1997 Flood Tracking Chart for the Sheyenne River Basin" can be used by local citizens and emergency response personnel to record the latest river stage and predicted flood-crest information.  By comparing the current state (water-surface elevation above some datum) and predicted flood crest to the recorded peak stages of...