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Page 5440, results 135976 - 136000

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Publication Extents

Not all publications have extents, not all extents are completely accurate
Atomic absorption spectrometric determination of copper, zinc, and lead in geological materials
R. F. Sanzolone, T. T. Chao
1976, Analytica Chimica Acta (86) 163-168
An atomic absorption spectrometric method is described for the determination of copper, zinc, and lead in geological materials. The sample is digested with HF—HCl—H2O2; the final solution for analysis is in 10 % (v/v) HCl. Copper and zinc are determined directly by aspirating the solution into an air—acetylene flame. A...
Hydrologic data for Little Elm Creek, Trinity River Basin, Texas, 1974
R.M. Slade Jr., J.M. Taylor
1976, Report
The U.S. Soil Conservation Service is actively engaged in the implementation of flood- and soil-erosion reducing measures in Texas under the authority of "The Flood Control Act of 1936 and 1944" and "Watershed Protection and Flood Prevention Act" (Public Law 566), as amended. The Soil Conservation Service has found that...
Change in methylene blue active substances and chloride levels in streams in Suffolk County, New York, 1961-1976
Stephen E. Ragone, August A. Guerrera, W.J. Flipse Jr.
1976, Open-File Report 76-600
Since 1961, concentrations of methylene blue active substances and chloride were measured in samples collected at 67 sampling stations on 44 streams in Suffolk County, Long Island, New York. Changes in the concentrations of these constituents and calculated chloride/methylene blue active substances ratios are reported. Although many factors--the 1962 to...
A land use and land cover classification system for use with remote sensor data
James R. Anderson, Ernest E. Hardy, John T. Roach, Richard E. Witmer
1976, Professional Paper 964
The framework of a national land use and land cover classification system is presented for use with remote sensor data. The classification system has been developed to meet the needs of Federal and State agencies for an up-to-date overview of land use and land cover throughout the country on a basis that is uniform...
Disharmony of the spheres: Recent trends in planetary surface nomenclature
R.J. Pike
1976, Icarus (27) 577-583
Inadvisable departures from tradition in naming newly mapped features on Mars, Mercury, and the Moon have been implemented and proposed since 1970. Functional need for place names also has become confused with cartographic convenience. Much of the resulting new nomenclature is neither unique, efficient, nor imaginative. The longstanding classical orientation...
Female homogamety in grass carp (Ctenopharyngodon idella) determined by gynogenesis
Jon G. Stanley
1976, Journal of the Fisheries Research Board of Canada (33) 1372-1374
Gynogenesis occurred in eggs of grass carp (Ctenopharyngodon idella) treated with X-irradiated milt from goldfish (Carassius auratus). Gynogenetic offspring were females, which indicates functional female homogamety in grass carp. Five of these gynogenetic fish were used as an egg source for a second generation of artificially gynogenetic fish. The percentage...
Wildlife diseases: philosophical considerations
M. Friend
L.A. Page, editor(s)
1976, Book chapter, Wildlife diseases
Wildlife diseases are studied because of their adverse impact on human health, agriculture, or wildlife conservation. Viewpoints from these three major areas of concern are not always compatible, yet the ecological nature of disease makes it essential that each is recognized and understood. Within wildlife agencies, resistance or apathy toward...
Production of hybrid, androgenetic, and gynogenetic grass carp and carp
J.G. Stanley
1976, Transactions of the American Fisheries Society (105) 10-16
Hybridization, androgenesis, and gynogenesis were studied as potential methods for creating nonreproducing populations of fish. Hybrids from crosses of female grass carp (Ctenopharyngodon idella) X male carp (Cyprinus carpio, Israeli mirrow variety) died during embryonic development. Hybrids of the reciprocal cross hatched and were stocked in ponds, but most died...
Geologic history of Cape Cod, Massachusetts
Water Resources Division, U.S. Geological Survey
1976, Report
Cape Cod, a sandy peninsula built mostly during the Ice Age, juts into the Atlantic Ocean like a crooked arm. Because of its exposed location, Cape Cod was visited by many early explorers. Although clear-cut evidence is lacking, the Vikings may have sighted this land about 1,000 years ago. It...