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Page 3867, results 96651 - 96675

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Evaluation of lipid-containing semipermeable membrane devices for monitoring organochlorine contaminants in the Upper Mississippi river
Geoffrey S. Ellis, Colleen E. Rostad, James N. Huckins, Christopher J. Schmitt, Patrick MacCarthy
1995, Environmental Toxicology and Chemistry (14) 1875-1884
Organochlorine contaminants sequestered in lipid-containing semipermeable membrane devices (SPMDs) were compared to those found in tangential-flow ultrafilter permeates as part of a pilot study at 10 sites in the Upper Mississippi River system. Caged and feral fish from three primary sites were also analyzed for comparison. Concentrated organochlorine (OC) compounds...
Results of geophysical surveys of glacial deposits near a former waste-disposal site, Nashua, New Hampshire
Joseph D. Ayotte, Tracy H. Dorgan
1995, Open-File Report 95-142
Geophysical investigations were done near a former waste-disposal site in Nashua, New Hampshire to determine the thickness and infer hydraulic characteristics of the glacial sediments that underlie the area. Approximately 5 miles of ground- penetrating radar (GPR) data were collected in the study area by use of dual-80 Megahertz antennas....
Geohydrology of the Flints Pond Aquifer, Hollis, New Hampshire
Joseph D. Ayotte, Tracy H. Dorgan
1995, Open-File Report 95-363
Flints pond has been subjected to accelerated eutrophication as a result of watershed development (building of new homes and conversion of summer cottages into permanent homes) since the 1930's. Ground-water flow is the primary recharge and discharge mechanism for Flints Pond. The saturated thickness, transmissive properties, and altitude of the...
Concentrations of mercury and other trace elements in walleye, smallmouth bass, and rainbow trout in Franklin D. Roosevelt Lake and the upper Columbia River, Washington, 1994
M.D. Munn, S.E. Cox, C.J. Dean
1995, Open-File Report 95-195
Three species of sportfish--walleye, smallmouth bass, and rainbow trout--were collected from Franklin D. Roosevelt Lake and the upstream reach of the Columbia River within the state of Washington, to determine the concentrations of mercury and other selected trace elements in fish tissue. Concentrations of total mercury in walleye fillets ranged...
Flood on the Virgin River, January 1989, in Utah, Arizona, and Nevada
D.D. Carlson, D. F. Meyer
1995, Water-Resources Investigations Report 94-4159
The impoundment of water in Quail Creek Reservoir in southwestern Utah began in April 1985. The drainage area for the reservoir is 78.4 square miles, including Quail Creek and Leeds Creek watersheds. Water also is diverted from the Virgin River above Hurricane, Utah, to supplement the filling of the reservoir.A...
Radiocarbon evidence for extensive plate-boundary rupture about 300 years ago at the Cascadia subduction zone
A.R. Nelson, B.F. Atwater, P.T. Bobrowsky, L. A. Bradley, J. J. Clague, G. A. Carver, M.E. Darienzo, W.C. Grant, H.W. Krueger, R. Sparks, Thomas W. Stafford Jr., M. Stuiver
1995, Nature (378) 371-374
The Cascadia subduction zone, a region of converging tectonic plates along the Pacific coast of North America, has a geological history of very large plate-boundary earthquakes1,2, but no such earthquakes have struck this region since Euro-American settlement about 150 years ago. Geophysical estimates of the moment magnitudes (Mw) of the...
Estimated natural ground-water recharge, discharge, and budget for the Dixie Valley area, west-central Nevada
J. R. Harrill, L.B. Hines
1995, Water-Resources Investigations Report 95-4052
The Dixie Valley area includes seven valleys in west-central Nevada (Dixie, Fairview, Stingaree, Cowkick, Eastgate, Pleasant, and Jersey Valleys; total, 2,380 square miles). Dixie Valley receives surface-water and ground-water flow from Stingaree, Cowkick, Eastgate, Pleasant, and Jersey Valleys and subsurface flow from Fairview Valley, which is a topographically closed basin....
Water-quality assessment of the Rio Grande Valley study unit, Colorado, New Mexico, and Texas -- Analysis of selected nutrient, suspended-sediment, and pesticide data
S. K. Anderholm, M.J. Radell, S. F. Richey
1995, Water-Resources Investigations Report 94-4061
This report contains a summary of data compiled from sources throughout the Rio Grande Valley study unit of the National Water-Quality Assessment program. Information presented includes the sources and types of water-quality data available, the utility of water-quality data for statistical analysis, and a description of recent water-quality conditions and...
Fractal structures and fractal functions as disease indicators
J.M Escos, C.L. Alados, J.M. Emlen
1995, Oikos (74) 310-314
Developmental instability is an early indicator of stress, and has been used to monitor the impacts of human disturbance on natural ecosystems. Here we investigate the use of different measures of developmental instability on two species, green peppers (Capsicum annuum), a plant, and Spanish ibex (Capra pyrenaica), an animal....