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Page 5341, results 133501 - 133525

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Publication Extents

Not all publications have extents, not all extents are completely accurate
Accumulation rates of Th-230, Pa-231, and some transition metals on the Bermuda Rise
M.P. Bacon, J.N. Rosholt
1982, Geochimica et Cosmochimica Acta (46) 651-666
Measurements of 238U, 234U, 230Th, 232Th, 231Pa, Mn, Fe, Co, Ni, Cu, and Zn were made on 23 samples from core GPC-5, a 29-m giant piston core from a water depth of 4583 m on the northeastern Bermuda Rise (33°41.2′N, 57°36.9′W). This area is characterized by rapid deposition of sediment transported by abyssal currents. Unsupported 230Th...
Breeding-ground habitat conditions and the survival of mallards
James D. Nichols, Richard S. Pospahala, James E. Hines
1982, Journal of Wildlife Management (46) 80-87
The relationship between habitat conditions in prairie breeding areas of North America and mallard (Anas platyrhynchos) survival rates was investigated. Annual survival-rate estimates for mallards generally were higher during years of high May pond numbers and low mallards-per-pond ratios than during years of low pond numbers and high ratios. This...
Extreme fractionation of 234U 238U and 230Th 234U in spring waters, sediments, and fossils at the Pomme de Terre Valley, southwestern Missouri
Barney J. Szabo
1982, Geochimica et Cosmochimica Acta (46) 1675-1679
Isotopic fractionation as great as 1600% exists between 234U and 238U in spring waters, sediments, and fossils in the Pomme de Terre Valley, southwestern Missouri. The activity ratios of 234U238U">234U238U in five springs range from 7.2 to 16 in water which has been discharged for at least the...
Techniques for using iron crucibles in experimental igneous petrology.
C.R. Thornber, J.S. Huebner
1982, American Mineralogist (67) 1144-1154
Some iron crucibles contain impurities of Mn, Ti and other elements. Such impurities may alter the fO2 of the system and induce crucible-charge interactions. Pretreatment of impure iron crucibles in a CO2-CO atmosphere at 1050oC, under conditions slightly more reducing than Fe-Fe1-xO, minimizes undesirable changes in the bulk composition of...
Status and distribution of ants in the Crater District of Haleakala National Park
JoanH Fellers, Gary M. Fellers
1982, Pacific Science (36) 427-437
The Crater District of Haleakala National Park was surveyed for ants. Three species were found. Argentine ants (Iridomyrmex humilis) occurred only within I km of the park headquarters and the nearby research facility. Hypoponera opaciceps was found in small numbers throughout the Crater District. Cardiocondyla emeryi was present only at...
Survival, growth, and catchability of rainbow trout of four strains
J.L. Brauhn, H. Kincaid
1982, North American Journal of Fisheries Management (2) 1-10
Fingerling rainbow trout (Salmo gairdneri) of genetically different strains survived, grew, and were caught at different rates by anglers and in gill nets after release from a hatchery into a 1‐hectare pond. When two domestic strains were compared, more fish of the strain genetically selected for fast growth were caught...
Variability in nest survival rates and implications to nesting studies
A.T. Klett, Douglas H. Johnson
1982, The Auk (99) 77-87
We used four reasonably large samples (83-213) of Mallard (Anas platyrhynchos) and Blue-winged Teal (A. discors) nests on an interstate highway right-of-way in southcentral North Dakota to evaluate potential biases in hatch-rate estimates. Twelve consecutive, weekly searches for nests were conducted with a cable-chain drag in 1976 and 1977. Nests...
Comparative hatching success of lake trout eggs in Lake Michigan water and well water
Carol C. Edsall, Michael J. Mac
1982, Progressive Fish-Culturist (44) 47-48
A study was undertaken to examine the influence of water from southern Lake Michigan on the survival of lake trout (Salvelinus namaycush) eggs by comparing the hatching success of eggs from the same source incubated in water from Lake Michigan, or from the laboratory well. It is concluded that the...
Water-soluble material on aerosols collected within volcanic eruption clouds
D. B. Smith, R. A. Zielinski, W.I. Rose Jr., B.J. Huebert
1982, Journal of Geophysical Research - Oceans (87) 4963-4972
In February and March of 1978, filter samplers mounted on an aircraft were used to collect the aerosol fraction of the eruption clouds from three active Guatemalan volcanoes (Fuego, Pacaya, and Santiaguito). The samples were collected on Teflon (Fluoropore) filters with a nominal pore diameter of 0.5μm. The mass of...
Evaluation of 0.46- to 2.36-mu m multispectral scanner images of the east Tintic mining district, Utah, for mapping hydrothermally altered rocks
L. C. Rowan, A.B. Kahle
1982, Economic Geology (77) 441-452
Airborne multispectral scanner images recorded in the 0.46- to 2.36-mu m region for the East Tintic mining district, Utah, were evaluated to determine their usefulness for distinguishing six types of hydrothermally altered rocks from a wide range of sedimentary and igneous rock types. Limestone, dolomite, and argillaceous rocks were of...
Occlusion of the syrinx as a manifestation of aspergillosis in Canada geese
R. K. Stroud, R. M. Duncan
1982, Journal of the American Veterinary Medical Association (181) 1389-1390
Aspergillosis has been described in many species of wild waterfowl, primarily as a disease of the respiratory tract. Typically, mycotic granulomas are found in the lungs. Air sacs may be thickened and contain discoid individual or coalescing greenish or bluish plaques resembling bread mold. Occasionally, there is systemic involvement, with...
Alcatraz Island
J. A. Howell
1982, Bay Area Naturalist (9) 7
No abstract available at this time...