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Page 4860, results 121476 - 121500

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Publication Extents

Not all publications have extents, not all extents are completely accurate
Potential secondary hazards of Avitrol baits to sharp-shinned hawks and american kestrels
Nicholas R. Holler, Edward W. Schafer Jr.
1982, Journal of Wildlife Management (46) 457-462
Avitrol© is the registered trade name of a number of proprietary bird control products containing the active ingredient 4-aminopyridine (4-AP). Several formulations of Avitrol are available to pest control applicators for use in agricultural areas. Although individual treated bait particles contain from 0.5 to 3.0% 4-AP, the amount present in...
International geomagnetic reference field 1980: a report by IAGA Division I working group.
N.W. Peddie
1982, Geophysical Journal of the Royal Astronomical Society (68) 265-268
Describes the recommendations of the working group, which suggested additions to IGRF because of the cumulative effect of the inevitable uncertainties in the secular variation models which had led to unacceptable inaccuracies in the IGRF by the late 1970's. The recommendations were accepted by the International Association of Geomagnetism and...
Use of Landsat data to evaluate lesser prairie chicken habitats in western Oklahoma
Richard W. Cannon, Fritz L. Knopf, Lawrence R. Pettinger
1982, Photogrammetric Engineering and Remote Sensing (46) 915-922
Landsat digital data were used to evaluate lesser prairie chicken (Tympanuchus pallidicinctus) habitats in western Oklahoma. Data for 7 (4,144 ha) study areas, 4 in shinnery oak (Quercus havardii), and 3 in sand sagebrush (Artemisia filifolia) rangeland, were analyzed using the Interactive Digital Image Manipulation System at the EROS Center....
Assessing mesquite-grass vegetation condition from Landsat
Kirk C. McDaniel, Robert H. Haas
1982, Photogrammetric Engineering and Remote Sensing (48) 441-450
Landsat multispectral scanner (MSS) band values, band ratios, and vegetation index models were compared with selected rangeland vegetation parameters collected at six test sites within the honey mesquitellotebushlmixed grass association in north-central Texas. The comparisons at four dates showed that two vegetation index models, TV16 and GVI, are highly correlated...
Notes on sedimentation activities calendar year 1981
U.S. Interagency Advisory Committee on Water Data- Subcommittee on Sedimentation
1982, Report
This report is a digest of information furnished by those Federal agencies conducting sedimentation investigations. It includes descriptions of work in progress or planned, important findings, new methods, new publications, laboratory and other research activities, and other pertinent information. The material has been organized by major drainage regions in the...
Portable precision dc voltage-current transfer standard for electrometer calibration
G. Landis, M. Godwin
1982, Review of Scientific Instruments (53) 1290-1291
A circuit design is presented for an instrument providing a highly stable and fully adjustable voltage and current in the range of 0-1.999 V or 0-199.9 mV and 10-11-10-15 A. This instrument is used to verify the calibration and performance of dc and vibrating reed electrometers and chart recorders on...
Variability in nest survival rates and implications to nesting studies
Albert 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...
Analytical electron microscopy in mineralogy; exsolved phases in pyroxenes
Gordon L. Nord Jr.
1982, Ultramicroscopy (8) 109-119
Analytical scanning transmission electron microscopy has been successfully used to characterize the structure and composition of lamellar exsolution products in pyroxenes. At operating voltages of 100 and 200 keV, microanalytical techniques of x-ray energy analysis, convergent-beam electron diffraction, and lattice imaging have been used to chemically and...
Genetic implications of minor-element and Sr-isotope geochemistry of alkaline rock complexes in the Wet Mountains area, Fremont and Custer counties, Colorado
T.J. Armbrustmacher, C. E. Hedge
1982, Contributions to Mineralogy and Petrology (79) 424-435
Concentrations of Rb, Sr, and REE (rare earth elements), and Sr-isotopic ratios in rocks of the Cambrian alkaline complexes in the Wet Mountains area, Colorado, show that rocks formed as end-products of a variety of magmas generated from different source materials. The complexes generally contain a bimodal suite of cumulus...