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Page 5627, results 140651 - 140675

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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...
87Sr/86Sr ratios in basalts from islands in the Indian Ocean
C. E. Hedge, N.D. Watkins, R.A. Hildreth, W. P. Doering
1973, Earth and Planetary Science Letters (21) 29-34
87Sr/86Sr ratios of basalts from islands in the Indian Ocean (0.7040) are higher than those of basalts dredged from the Mid-Indian Ocean Ridge (0.7034). The sources of the island basalts have apparently not been in equilibrium with the source of the...
Floods in New York, 1971
F. Luman Robison
1973, Report
This report, for the calendar year 1971, was prepared at the request of the New York State Department of Transportation under provisions of an agreement between the New York State Department of Environmental Conservation and the U.S. Geological Survey fore a cooperative statewide program investigate the water resources of the...
18O 16O ratios in cherts associated with the saline lake deposits of East Africa
J. R. O’Neil, R. L. Hay
1973, Earth and Planetary Science Letters (19) 257-266
The cherts formed from sodium silicate precursors in East African saline, alkaline lakes have δ18O values ranging from 31.1 to 44.1. The δ18O values correlate in general with lake salinities as inferred from geologic evidence, indicating that most chert was formed...
Snowy owl predation on lapland longspur nestlings recorded on film
T. W. Custer
1973, The Auk (90) 433-435
 During the summer of 1971 I investigated the breeding biology of the Lapland Longspur, Calcarius lapponicus, near Barrow, Alaska. To obtain data on incubation and feeding patterns of nesting longspurs, time-lapse cameras (Minolta Autopak-8 D6 super-8 movie cameras equipped with an Intervalometer-P time-lapse device) were positioned at several nests throughout...
A method to determine waterfowl shooting distances
D.A. Davenport, G.A. Sherwood, H. W. Murdy
1973, Wildlife Society Bulletin (1) 101-105
Long-range shooting at ducks and geese frequently results in a high crippling loss, unretrieved birds and frustrated hunters. A principal problem has been the general inability of hunters or observers to properly judge distance of birds. This paper describes a reasonably accurate method developed to determine shooting distances to geese....
Fish viruses: Buffers and methods for plaquing eight agents under normal atmosphere
K. Wolf, M. C. Quimby
1973, Applied Microbiology (25) 659-664
A universal procedure was sought for plaque assay of eight fish viruses (bluegill myxovirus, channel catfish virus, eel virus, Egtved virus, infectious hematopoietic necrosis virus, infectious pancreatic necrosis virus, lymphocystis virus, and the agent of spring viremia of carp (Rhabdovirus carpio), in dish cultures of various fish cells. Eagle minimal...
History of salmon in the Great Lakes, 1850-1970
John W. Parsons
1973, Technical Paper 68
This history of the salmon in the Great Lakes describes the decline and extinction of the Atlantic salmon (Salmo salar) in Lake Ontario in the 1800's; the failure to establish, by salmon culture, permanent or sizable populations of Atlantic or Pacific salmon in any of the Great Lakes in 1867-1965;...
Ground water in selected areas in the Klamath Basin, Oregon
A.R. Leonard, A.B. Harris
1973, Report
GROUNDWATER FEATURES OF SIX LOWLAND AREAS IN THE KLAMATH BASIN OF OREGON--KLAMATH MARSH AREA, AND SPRAGUE RIVER, SWAN LAKE, YONNA, POE, AND LANGELL VALLEYS--ARE DESCRIBED. RUGGED MOUNTAINS AND RIDGES SURROUND AND SEPARATE THESE LOWLANDS WHERE FLOORS RANGE IN ALTITUDE FROM 4,100 FEET IN POE...
Ultrafiltration by a compacted clay membrane-II. Sodium ion exclusion at various ionic strengths
B.B. Hanshaw, T.B. Coplen
1973, Geochimica et Cosmochimica Acta (37) 2311-2327
Several recent laboratory studies and field investigations have indicated that shales and compacted clay minerals behave as semipermeable membranes. One of the properties of semipermeable membranes is to retard or prevent the passage of charged ionic species through the membrane pores while allowing relatively free movement of uncharged species. This...
Production of superheated steam from vapor-dominated geothermal reservoirs
A.H. Truesdell, D. E. White
1973, Geothermics (2) 154-173
Vapor-dominated geothermal systems such as Larderello, Italy, The Geysers, California, and Matsukawa, Japan yield dry or superheated steam when exploited. Models for these systems are examined along with production data and the thermodynamic properties of water, steam and rock. It is concluded that...
Determination of indium in rocks by substoichiometric radioisotope dilution analysis
L. Paul Greenland, E.Y. Campbell
1973, Analytica Chimica Acta (67) 29-36
Rocks containing 10–140 ng of indium per g are decomposed with hydrofluoric and nitric acids in the presence of 114In. Indium is separated from other constituents by sequential extractions of the bromide, cupferronate, and acetylacetonate, and is then reacted with a substoichiometric amont of EDTA. Excess...
K, Rb, Sr and 87Sr 86Sr in rocks from the Mid-Indian Oceanic Ridge
K.V. Subbarao, C. E. Hedge
1973, Earth and Planetary Science Letters (18) 223-228
The 87Sr/86Sr ratios of Mid-Indian Oceanic Ridge (MIOR) basalts are nearly identical (0.7032 to 0.7035), with the exception of one more highly radiogenic sample (0.7043). These values are consistently higher than the strontium isotopic ratios of the ridge basalts from Atlantic and...