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184904 results.

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Page 4244, results 106076 - 106100

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Publication Extents

Not all publications have extents, not all extents are completely accurate
Causes of mortality in common loons
J. Christian Franson, David J. Cliplef
1992, Conference Paper, Proceedings from the 1992 Conference on the Loon and its Ecosystem: Status, management, and environmental concerns
Summarized are necropsy results from 222 carcasses of Common Loons (Gavia immer) submitted to the National Wildlife Health Research Center from 1976 through 1991.  The carcasses were from 18 states, and 10 or more birds each were from Minnesota, Florida, Virginia, Michigan, Wisconsin, Maine, and North Carolina.  Seventy-three (33%) carcasses...
Tensiometers: Theory, construction, and use
D.I. Stannard
1992, Geotechnical Testing Journal (15) 48-58
Standard tensiometers are used to measure matric potential as low as −870 cm of water in the unsaturated zone by creating a saturated hydraulic link between the soil water and a pressure sensor. The direction and, in some cases, quantity of water flux can be determined using multiple installations.A variety...
Book review: Disease and Threatened Birds, edited by J. E. Cooper
L. Sileo
1992, Journal of Wildlife Diseases (28) 510-511
Review of: Disease and threatened birds : based on the proceedings of a symposium held at the XIX World Conference of the International Council for Bird Preservation, June 1986, Queens University, Kingston, Ontario, Canada. Edited by J. E. Cooper. Cambridge, England : International Council for Bird Preservation, 1989. ICBP technical...
Evaluation of the effects of candidate molluscicides on two nontarget bivalves
D. L. Waller, L. L. Marking, J.J. Rach
1992, Journal of Shellfish Research (11) 241
A variety of molluscicides have been proposed for use in control of zebra mussels (Dreissena polymorpha), but their effect on nontarget aquatic organisms has not been evaluated. Standard methods were adapted for assessing the toxicity of candidate molluscicides to two nontarget bivalves. Fingernail clams, Musculium transversum, and...
Foreward
David W. Gordon, editor(s)
1992, Earthquakes & Volcanoes (USGS) (23) 92-93
This issue of <i>Earthquakes & Volcanoes</i> focuses on a series of three powerful earthquakes centered near Cape Mendocino, California, on April 25-26, 1992. The sequence began with a magnitude 7.1 mainshock at 11:06 a.m. (local time) on April 25. Strong aftershocks with magnitudes of 6.6 and 6.7 occurred on April...
Debris flow rheology: Experimental analysis of fine-grained slurries
Jon J. Major, Thomas C. Pierson
1992, Water Resources Research (28) 841-857
The rheology of slurries consisting of ≤2-mm sediment from a natural debris flow deposit was measured using a wide-gap concentric-cylinder viscometer. The influence of sediment concentration and size and distribution of grains on the bulk rheological behavior of the slurries was evaluated at concentrations ranging from 0.44 to 0.66. The...
Landsat thematic mapper products for rangeland assessment
Robert H. Haas
1992, Geocarto International (7) 27-33
Landsat Thematic Mapper (TM) data are useful for mapping rangeland resources worldwide. Spatial resolution and spectral characteristics of the data are adequate for performing a variety of range‐related tasks, including monitoring ecological change. The unique spectral characteristics of TM data are important in the development of products for manual interpretation...
Geochemical heterogeneity in a sand and gravel aquifer: Effect of sediment mineralogy and particle size on the sorption of chlorobenzenes
Larry B. Barber II, E. Michael Thurman, Donald D. Runnells
1992, Journal of Contaminant Hydrology (9) 35-54
The effect of particle size, mineralogy and sediment organic carbon (SOC) on sorption of tetrachlorobenzene and pentachlorobenzene was evaluated using batch-isotherm experiments on sediment particle-size and mineralogical fractions from a sand and gravel aquifer, Cape Cod, Massachusetts. Concentration of SOC and sorption of chlorobenzenes increase with decreasing particle size. For...
The 1992 Landers earthquake and surface faulting
Michael J. Rymer
1992, Earthquakes & Volcanoes (USGS) (23) 209-218
Faulting associated with the June 28, 992, earthquake near Landers, California, broke the surface of the ground over a length of more than 70 km, the longest surface rupture in the United States since the great San Francisco quake of 1906. the strongest shaking associated with this magnitude 7.6 (MS)...
Damage and intensity survey
G. Reagor, L. R. Brewer
1992, Earthquakes & Volcanoes (USGS) (23) 116-123
A trio of widely felt earthquakes struck the Cape Mendocino region of northern California in an 18-hour period on April 25-26, 1992. Collectively these shocks caused significant damage to older structures in the sparsely populated, mountainous epicentral region. The area where the first shock, the strongest of the three (M=7.1),...
Stable isotope study of water-rock interaction and ore formation, Bayhorse base and precious metal district, Idaho
R.R. Seal II, R. O. Rye
1992, Economic Geology (87) 271-287
The Bayhorse base and precious metal district is situated east of the Idaho batholith in south-central Idaho. The ores occur near the Nevada Mountain granitic stock as veins cutting the lower Paleozoic Ramshorn Slate and the Garden Creek Phyllite, and as fillings around breccia fragments within the Bayhorse Dolomite. The...
Hydrothermal ore-forming processes in the light of studies in rock- buffered systems: II. Some general geologic applications
J.J. Hemley, J.P. Hunt
1992, Economic Geology (87) 23-43
The experimental metal solubilities for rock-buffered hydrothermal systems, reported by Hemley et al. (1992), provide important insights into the acquisition, transport, and deposition of metals in real hydrothermal systems that produced base metal ore deposits. Water-rock reactions that determine pH, together with total chloride and changes in temperature and fluid...
Salmonid whirling disease
M.E. Markiw
1992, Fish and Wildlife Leaflet 17
This paper provides the latest scientific and technical advances in the management of salmonid whirling disease caused by the myxosporean Myxobolus cerebralis (Syn. Myxosoma cerebralis). The complete life cycle of the parasite and the biology of the infective agent to fish, the actinosporean Triactinomyxon stage, are reviewed, and suggested procedures...