Gordon W. Weir, Chester L. Dodson
1957, Trace Elements Memorandum 569
No abstract available....
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Publication Extents
Not all publications have extents, not all extents are completely accurateK. N. Phillips
1957, Report
Turkey is in a state of transition from an agricultural and pastoral economy to an economy that combines agriculture and industry. Such a transition includes use of water resources for water power, irrigation, manufacturing, and domestic uses. The control of streams for multiple purposes invariably leads to conflicts of interest....
John D. Wells
1957, Trace Elements Memorandum 1009
No abstract available...
John D. Wells
1957, Trace Elements Memorandum 1008
No abstract available...
Kathleen McQueen
1957, Trace Elements Memorandum 1069
No abstract available...
1957, Bulletin 1048
Abstracts of current literature pertaining to the physics of the solid earth and to geophysical exploration....
1957, Trace Elements Memorandum 1006
No abstract available...
Thomas E. Mullens
1957, Trace Elements Memorandum 1001
No abstract available...
Luna Bergere Leopold
Harmon Craig, editor(s)
1957, Conference Paper, Proceedings: Conference on recent research in climatology
In the past few days we have heard a number of scientists, gathered here at Scripps Institution of Oceanography, discuss research work which, in one manner or another, bears on problems related to water resources. They have been discussing, particularly, problems in the field of climatology, and have speculated on...
J.L. George, R.F. Darsie, P. F. Springer
1957, Journal of Wildlife Management (21) 42-53
No abstract available. ...
S. F. Snieszko
1957, Progressive Fish-Culturist (19) 81-84
No abstract available....
H. R. Cornwall, H. J. Rose Jr.
1957, Geochimica et Cosmochimica Acta (12) 209-224
The distribution of minor elements in three basaltic flows of the Keweenawan series, of Michigan, is related to differentiation in the flows. Thus, nickel is most abundant in the early differentiates; nickel, chromium, and barium are generally deficient in the pegmatites, which formed late; whereas copper, vanadium, yttrium, and other...
H.I. Feinstein
1957, Microchemical Journal (1) 237-244
[No abstract available]...
F.J. Flanagan
1957, Geochimica et Cosmochimica Acta (12) 315-322
The rank correlation coefficient, rs, which involves less computation than the product-moment correlation coefficient, r, can be used to indicate the degree of relationship between two elements. The method is applicable in situations where the assumptions underlying normal distribution correlation theory may not be satisfied. Semi-quantitative spectrographic analyses which are reported as...
John Van Oosten
1957, Book
No abstract available....
John Van Oosten, Hilary J. Deason
1957, Special Scientific Report - Fisheries 229
A historical account traces the development of the commercial fisheries of the Red Lakes, Minnesota, from its inception in 1917 as a war measure through 1938. The trends of production and catch per unit of effort were followed for the principal species with notes on statistics of the minor...
Ralph Hile
1957, Special Scientific Report - Fisheries 226
The major purpose of this publication is to present an annotated bibliography of papers resulting from Federal investigations on the Great Lakes fish and fisheries since the formal initiation of a continuing research program by the Fish and Wildlife Service. It is believed that this purpose can be served best...
Alberton L. McLain
1957, Transactions of the American Fisheries Society (86) 269-284
Alternating-current electromechanical devices installed in the mouths of streams have proved effective in stopping the spawning migrations of the parasitic sea lamprey (Petromyzon marinus) which has seriously damaged Great Lakes fisheries. In a few streams, excessive mortality has occurred to other fish at the alternating-current barriers. A direct-current unit was...
Leonard S. Joeris
1957, Transactions of the American Fisheries Society (86) 169-194
The appearance of the scales of yellow perch differs with the location on the fish's body. Comparison of scales of Green Bay perch taken above and below the lateral line reveals the former to have more sharply defined circuli and to exhibit fewer false annuli and less of the shading...
Stanford H. Smith
1957, Transactions of the American Fisheries Society (86) 409-418
Early explorations on the Great Lakes were concerned largely with things easily collected or observed—common organisms, water levels, surface temperatures … Even when more scientific studies were undertaken, they were at first scattered and small-scale. Effective surveys became possible only through inter-agency cooperation which permits a pooling of facilities, staff,...
J. N. Rosholt
1957, Analytical Chemistry (29) 1398-1408
Study of the state of equilibrium of any natural radioactive source requires determination of several key nuclides or groups of nuclides to find their contribution to the total amount of radioactivity. Alpha activity measured by scintillation counting is used for determination of protactinium-231, thorium-232, thorium-230, and radium-226. The chemical procedures...
J.S. Wahlberg, D. L. Skinner, L. F. Rader Jr.
1957, Analytical Chemistry (29) 954-957
Need for a more rapid volumetric method for the routine determination of uranium in uranium-rich materials has led to the development of a method that uses titanous sulfate as a reductant before oxidimetric titration. Separation of the hydrogen sulfide group is not necessary. Interfering elements precipitated by cupferron are removed...
Mary H. Fletcher, F. S. Grimaldi, Lillie B. Jenkins
1957, Analytical Chemistry (29) 963-967
In the spectrophotometric determination of thorium with thoron, meso-tartaric acid is used as a masking reagent for zirconium. The effects of different experimental variables such as the concentrations of the reagents, time, and temperature, and the behavior of 35 ions which might be present in thorium ores are discussed. A...
L. L. Thatcher, F. B. Barker
1957, Analytical Chemistry (29) 1575-1578
The fluorophotometric determination of uranium was studied to develop a procedure applicable to the routine analysis of waters. Three grams of the high carbonate flux are used in a dilution procedure with spiking. Because of the comparatively high reflectivity of this large disk and the low uranium concentration, a correction...
R.G. Milkey, M. H. Fletcher
1957, Journal of the American Chemical Society (79) 5425-5435
Thorium reacts with morin to yield a yellow complex that fluoresces when irradiated with ultraviolet light. The effect on the fluorescence of such variables as concentration of acid, alcohol, thorium, morin, and complex; time, temperature and wave length of exciting light are studied to determine experimental conditions yielding maximum fluorescence....