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Page 6242, results 156026 - 156050

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Uranium occurrences in Bucks County, Pennsylvania, and Hunterdon County, New Jersey
F. A. McKeown, P.W. Choquette, R. C. Baker
1954, Trace Elements Investigations 414
Eleven occurrences of uraniferous argillite in the Lockatong lithofacies and five occurrences of uraniferous sandstone in the Stockton lithofacies, both of Triassic age, are known in Buck County, Pa. and Hunterdon County, N.J. Most of the occurrences were discovered by the Geological Survey, though prospectors found several. The Delaware quarry, Bucks...
Carnotite-bearing sandstone in Cedar Canyon, Slim Buttes, Harding County, South Dakota
James R. Gill, George W. Moore
1954, Trace Elements Investigations 411
Carnotite-bearing sandstone and clay have been found in the Chadron formation of the White River group of Oligocene age in the southern part of the Slim Buttes area, Harding County, S. Dak. Locally the mineralized sandstone contains as much as 0.23 percent uranium. The uranium and vanadium ions are believed...
Relationship of length of fish to incidence of sea lamprey scars on white suckers, Catostomus commersoni, in Lake Huron
A.E. Hall, Oliver R. Elliott
1954, Copeia (1954) 73-74
During the course of experimental fishing operations conducted by the staff of Hammond Bay Fishery Laboratory (a field station of Great Lakes Fishery Investigations) in 1950-1951, length measurements and records of scarring incidence and number of scars per individual were obtained for a sample of 552 white suckers, Catostomus commersoni...
Double-chamber electrode for spectrochemical determination of chlorine and other halogens
L. H. Azevedo de Paiva, A. W. Specht, R. S. Harner
1954, Spectrochimica Acta (6) 331-333
A double-chamber, graphite electrode, suitable for d.c. arc determination of halogens by means of the alkaline earth halide bands, is described. An upper chamber holds the alkaline earth compound and an interconnected, lower chamber holds the halogen compound.This arrangement assures that there will be an abundance of alkaline earths in...
A chemical-spectrochemical method for the determination of rare earth elements and thorium in cerium minerals
H. J. Rose Jr., K. J. Murata, M. K. Carron
1954, Spectrochimica Acta (6) 161-168
In a combined chemical-spectrochemical procedure for quantitatively determining rare earth elements in cerium minerals, cerium is determined volumetrically, a total rare earths plus thoria precipitate is separated chemically, the ceria content of the precipitate is raised to 80·0 percent by adding pure ceria, and the resulting mixture is analyzed for...
Stability of dilute solutions of uranium, lead, and thorium ions
R.G. Milkey
1954, Analytical Chemistry (26) 1800-1803
Standard solutions and samples containing a few micrograms of metallic ions per milliliter are frequently used in determination of trace elements. It is important to know whether the concentrations of such solutions remain constant from day to day. The stability of dilute solutions of three metallic ions-uranium, lead, and thorium-has...
Quantitative radiochemical method for determination of major sources of natural radioactivity in ores and minerals
J. N. Rosholt
1954, Analytical Chemistry (26) 1307-1311
When an ore sample contains radioactivity other than that attributable to the uranium series in equilibrium, a quantitative analysis of the other emitters must be made in order to determine the source of this activity. Thorium-232, radon-222, and lead-210 have been determined by isolation and subsequent activity analysis of some...
Thick target bremsstrahlung spectra for 1.00-, 1.25-, and 1.40-Mev electrons
W. Miller, J. W. Motz, C. Cialella
1954, Physical Review (96) 1344-1350
The spectrum of radiation produced by 1.0-, 1.25-, and 1.40-Mev electrons incident on a thick tungsten target was measured at 0° and 90° with the incident beam by a method involving the magnetic analysis of Compton electrons. The effects of electron scattering and energy loss in the target preclude any...
Studies of river morphology
Luna Bergere Leopold
1954, Science (119) 326-327
A number of generalizations concerning the behavior and natural characteristics of river channels have been developed by the U.S. Geological Survey in several recently completed studies of river morphology. Measurements of parameters such as the discharge, suspended load, bed material, velocity of flow, channel slope, and channel shape indicate that...
Spectrochemical determination of thorium in monazite by the powder-d.c. arc technique
C. V. Dutra, K. J. Murata
1954, Spectrochimica Acta (6) 373-382
Thorium in monazite is determined by a d.c. carbon-arc technique using zirconium as the internal standard. The analytical curve for Th II 2870.413 Å/Zr II 2844-579 Å is established by means of synthetic standards containing graduated amounts of thoria and 0.500 per cent zirconia in pegmatite base (60 parts quartz,...
Geochemical work of the Geochemistry and Petrology Branch U.S. Geological Survey
E. Ingerson
1954, Geochimica et Cosmochimica Acta (5) 20-39
The current geochemical work of the Geochemistry and Petrology Branch of the U.S. Geological Survey is outlined under the headings of geochemical compilations, laboratory projects, and field-laboratory projects. Some thirty-seven active projects are described. Six others are mentioned which are planned for the near future. The importance and value of...
Spectrophotometric determination of uric acid and some redeterminations of its solubility
D. R. Norton, M. A. Plunkett, F. A. Richards
1954, Analytical Chemistry (26) 454-457
The present study was initiated in order to develop a rapid and accurate method for the determination of uric acid in fresh, brackish, and sea water. It was found that the spectrophotometric determination of uric acid based upon its reaction with arsenophosphotungstic acid reagent in the presence of cyanide ion...
Polarographic determination of tungsten in rocks
L.E. Reichen
1954, Analytical Chemistry (26) 1302-1304
This work was undertaken to develop a simpler and faster method than the classical gravimetric procedure for the determination of tungsten in rocks and ores. A new polarographic wave of tungsten is obtained in a supporting electrolyte of dilute hydrochloric acid containing tartrate ion. This permits the determination of tungsten...
Tables for evaluating Bateman equation coefficients for radioactivity calculations
F.J. Flanagan, F. E. Senftle
1954, Analytical Chemistry (26) 1595-1600
Tables of decay constants and functions thereof are presented to simplify the problem of calculating the constants involved in the Bateman equation. These tables make it possible to calculate any constant involved in any of the four radioactive series by a maximum of three mathematical operations, either by three divisions...