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Page 6243, results 156051 - 156075

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Publication Extents

Not all publications have extents, not all extents are completely accurate
A theoretical study of alpha star populations in loaded nuclear emulsions
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...
Fluctuations in production and abundance of commercial species in the Red Lakes, Minnesota, with special reference to changes in the walleye population
Lloyd 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...
The flood control controversy: Big dams, little dams, and land management
Luna Bergere Leopold, Thomas Maddock Jr.
1954, Book
The purpose of this book is to investigate the facts regarding flood control, a subject that has given rise to extreme controversy in the United States in recent years. The question of flood control is obviously a vital one not only to the United States but to many other countries....
Discussion of “expansion and increase in permeability of carbonate rocks on heating”
Clifford A. Kaye, John C. Maxwell, Peter Verrall
1953, Eos, Transactions, American Geophysical Union (34) 953-954
Maxwell and Verrall's interesting study raises a thought. If limestones expand on heating and thereby receive a permanent set, as this paper demonstrates, do we not have here a means of determining the maximum temperature to which a particular limestone was ever subjected and indirectly thereby its maximum depth of...
Trap efficiency of reservoirs
Gunnar M. Brune
1953, Eos, Transactions, American Geophysical Union (34) 407-448
Forty-four records of reservoir trap efficiency and the factors affecting trap efficiency are analyzed. The capacity-inflow (C/I) ratio is found to offer a much closer correlation with trap efficiency than the capacity-watershed (C/W) ratio heretofore widely used. It appears likely from the cases studied that accurate timing of venting or...
A contagious disease of salmon, possibly of virus origin
R.R. Rucker, W.J. Whipple, J.R. Parvin, C.A. Evans
1953, Fishery Bulletin (54) 35-46
Production records for 1885, 1891–1908, and 1929–49, indicate cyclic fluctuations for several important species of fish. The average annual take (all species) of 3,582,000 pounds in 1929–49 was 3,503,000 pounds below the 1891–1908 mean of 7,085,000 pounds. Decline in the output of lake herring alone from 5,841,000 pounds in 1891–1908...
Geology, of the High Climb Pegmatite, Custer County, South Dakota
Douglas M. Sheridan
1953, Trace Elements Investigations 231
The High Climb pegmatite, Custer County, S. Dak., belongs to the series of pegmatitic and granitic rocks that characterize the Harney Peak region of the southern Black Hills. It intrudes pre-Cambrian metamorphic rocks consisting chiefly of quartz-mica schist. The country rock has been altered to a tourmaline-rich schist along part...
Occurrences of uranium-bearing minerals in the St. Kevin District, Lake County, Colorado
C. T. Pierson, Q. D. Singewald
1953, Trace Elements Investigations 234
Two hundred and seventy-one prospect pits, mine dumps, or mine workings within the Sugar Loaf-St. Kevin mining districts and vicinity were tested for radioactivity by the U.S. Geological Survey in 1951 during six weeks of investigation on behalf of the Division of Raw Materials of the U.S. Atomic Energy Commission....
Chemical and physical quality examination
William Lamar
1953, Book chapter, Lake Erie pollution survey. Final report.
In a balanced study of water pollution or water utilization a thorough chemical and physical examination is essential. This provides a basis for evaluation of stream conditions, their effects and remedies. Such information is of value to the general public who are interested in clean water and in recreation, hunting,...
Hydrology of Lake Erie and tributaries
L. C. Crawford
1953, Book chapter, Lake Erie pollution survey. Final report
The drainage area of the Great Lakes is equal to nearly one-tenth of the entire area of the United States; 58 percent of this area lies within the United States. The information in Table 3 affords a ready comparison of the land and water areas involved in the United States...
The measurement of total sediment load in alluvial streams
P.C. Benedict, D.Q. Matejka
John S. McNown, M.C. Boyer, editor(s)
1953, Conference Paper, Proceedings of the fifth Hydraulics Conference, June 9-11, 1952, arranged by the Iowa Institute of Hydraulic Research
The measurement of the total sediment load transported by streams that flow in alluvial channels has been a perplexing problem to engineers and geologists for over a century. Until the last decade the development of equipment to measure bed load and suspended load was carried on almost independently, and without...