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Page 2647, results 66151 - 66175

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Publication Extents

Not all publications have extents, not all extents are completely accurate
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...
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...
Composition of the continental plates
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...
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...
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...
Irrigation and water quality: Part 2--quality of water in selected basins
C. S. Howard
1953, The Reclamation ERA (39) 39-40
Practically all streams show a progressive increase in dissolved solids concentration from the headwaters to the mouth. Much of the increase is due to water coming in contact with natural, calcareous, or gypsiferous soils and dissolving large quantities of this material, thus increasing the hardness of the water....
Ground-water problems in highway construction and maintenance
W. C. Rasmussen, L. B. Haigler
1953, Bulletin 1
This report discusses the occurrence of ground water in relation to certain problems in highway construction and maintenance. These problems are: the subdrainage of roads; quicksand; the arrest of soil creep in road cuts; the construction of lower and larger culverts necessitated by the farm-drainage program; the prevention of failure...