Fred W. Cater Jr.
1954, Miscellaneous Field Studies Map 29
No abstract available....
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Page 7002, results 175026 - 175050
Publication Extents
Not all publications have extents, not all extents are completely accurateLloyd L. Smith Jr., Laurits W. Krefting
1954, Transactions of the American Fisheries Society (83) 131-160
The Red Lakes in northwestern Minnesota comprise 275,000 acres of water which support a commercial fishery producing up to 1.5 million pounds of fish per year. Walleye, Stizostedion vitreum vitreum (Mitchill), and yellow perch, Perca flavescens (Mitchill), are the principal species. Statistics for the past 37 years have been analyzed...
Stanford H. Smith
1954, Progressive Fish-Culturist (16) 75-78
No abstract available....
E. M. Wood, P. J. Griffin, S. F. Snieszko
1954, Progressive Fish-Culturist (16) 19-24
No abstract available....
J. F. Pepper, Wallace De Witt Jr., D. F. Demarest
1954, Professional Paper 259
No abstract available....
T.F.W. Barth, M. Fleischer
1954, Geochimica et Cosmochimica Acta (6) 132-154
No abstract available....
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...
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...
P. J. Griffin
1954, Transactions of the American Fisheries Society (83) 241-253
G. L. Hoffman
1954, Journal of Parasitology (40) 232-233
No abstract available....
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,...
Henry Rowland Cornwall
1954, Geologic Quadrangle 52
No abstract available....
Walter S. White, James C. Wright
1954, Science (119) 354-355
No abstract available....
James W. Moffett
1954, Book chapter, The book of knowledge annual, 1954
No abstract available....
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...
F. E. Senftle, T. A. Farley, L. R. Stieff
1954, Geochimica et Cosmochimica Acta (6) 197-207
This theoretical study of the alpha star populations in loaded emulsions was undertaken in an effort to find a quantitative method for the analysis of less than microgram amounts of thorium in the presence of larger amounts of uranium. Analytical expressions for each type of star from each of the...
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...
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...
J. Gilluly
1954, Tschermaks Mineralogische und Petrographische Mitteilungen (4) 360-369
The structures of continental plates and of oceanic basins suggested by several seismologists are utilized to estimate the relative volumes of sial and sima in the earth's crust. It seems that sial of the composition of the average igneous rock constitutes fully 26% and perhaps as much as 43% of...
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...
H. Levine, J.J. Rowe, F. S. Grimaldi
1954, Science (119) 327-328
No abstract available....
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...
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...
M. Fleischer
1954, Journal of Chemical Education (31) 446-455
No abstract available....
P.R. Wilkinson, J.A. Gibson Jr., A.J.W. Headlee
1954, Analytical Chemistry (26) 767-769
[No abstract available]...