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Page 6268, results 156676 - 156700

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Publication Extents

Not all publications have extents, not all extents are completely accurate
Determination of gold in phosphates by activation analysis using epithermal neutrons
Jack J. Rowe
1973, Journal of Research of the U.S. Geological Survey (1) 79-80
A simple method is described for determining gold in phosphates and phosphatic materials. Samples in a cadmium container are irradiated with epithermal neutrons to minimize the formation of 32 P, while permitting the formation of adequate amounts of 198 Au.  Fire assay-radiochemical methods are used to separate the 198 Au.  Concentrations as low...
Selected hydrologic data, lower Bear River drainage basin, Box Elder County, Utah
L.J. Bjorklund, L. J. McGreevy
1973, Utah Basic-Data Release 23
This report presents selected basic data from a study of the ground- water resources of the lower Bear River drainage basin, Box Elder County, Utah. The study was made during 1970-72 by the U.S. Geological Survey in cooperation with the Utah Department of Natural Resources, Division of Water Rights. Incorporated...
Selective predation by mink, Mustela vison, on waterfowl
Alan B. Sargeant, George A. Swanson, Harold A. Doty
1973, American Midland Naturalist (89) 208-214
Predation by mink (Mustela vison) on three types of ducks (captive, pen-reared-released and wild) was documented in two studies at the Northern Prairie Wildlife Research Center, Jamestown, North Dakota. In the first study, 36 of 60 flightless adult and juvenile ducks held on eight 0.1-acre experimental ponds disappeared between 10...
The selenium content of U.S.G.S. standard rocks
M. M. Schnepfe, F.J. Flanagan
1973, Chemical Geology (12) 77-80
Selenium was determined in duplicate portions from three bottles of six U.S.G.S. standard rocks by a spect rofluorimetric procedure. The following averages, as p.p.m. Se, were obtained: PCC-1, 0.031; GSP-1, 0.088; BCR-1, 0.12; SCo-1, 0.91; MAG-1, 1.3; and SGR-1, 3.7. One-way analysis...
Point of zero charge of weathered forsterite
R.W. Luce, George A. Parks
1973, Chemical Geology (12) 147-153
The point of zero charge of forsterite shifts from an estimated 8.9 for the unaltered mineral to 8.4 and 8.0, respectively, after being weathered artificially for 1 h and 4 h. These results corroborate the presence of magnesium-deficient surfaces on the weathered...
Radiochemical monitoring of water after the Cannikin event, Amchitka Island, Alaska, October 1972
L.J. Schroder, Wilbur C. Ballance
1973, Report
The U.S. Geological Survey collected water samples from Arnchitka Island, Alaska, during October 1972. Tritium determinations were made on all samples collected and gross alpha and gross beta/gamma determinations were made on 41 samples. The gross alpha and gross beta determinations when compared with previously determined ranges for fresh waters...
Hydraulic tests in hole UAe-3, Amchitka Island, Alaska
Wilbur C. Ballance
1973, Report
Inflatable straddle packers were used to isolate and test selected intervals in hole UAe-3. Packer seats were poor in the uncased part of the hole because of unstable wall conditions, and leakage around packers occurred during some tests. However, leakage generally was slight, as shown on pressure-gage charts, and had...
Determination of lead, uranium, thorium, and thallium in silicate glass standard materials by isotope dilution mass spectrometry
I. L. Barnes, E. L. Garner, J. W. Gramlich, L. J. Moore, T. J. Murphy, L. A. Machlan, W. R. Shields, Mitsunobu Tatsumoto, R. J. Knight
1973, Analytical Chemistry (45) 880-885
A set of four standard glasses has been prepared which have been doped with 61 different elements at the 500-, 50-, 1-, and 0.02-ppm level. The concentrations of lead, uranium, thorium, and thallium have been determined by isotope dilution mass spectrometry at a number of points in each of the...
Summary of chemical and radiochemical monitoring of water for the Cannikin event, Amchitka Island, Alaska, fiscal year 1972
L.J. Schroder, Wilbur C. Ballance
1973, Report
An increased dissolved-solids content was found immediately after the Cannikin event (November 6, 1971) at most of 10 locations in a water-sampling network established in 1967 and revised in September 1971. The observed dissolved-solids content increase was within the seasonal range that has been observed at these locations. No measurable increase...
Drought displaced movement of North American pintails into Siberia
Charles J. Henny
1973, Journal of Wildlife Management (37) 23-29
During the years 1954-70, 230 pintails (Anas acuta) banded in North America were reported from eastern Asia, primarily Siberia. Most of the birds were shot on the breeding grounds in May. The movement into eastern Asia of pintails banded in the interior of North America was directly correlated with the...