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Page 5737, results 143401 - 143425

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Publication Extents

Not all publications have extents, not all extents are completely accurate
Uranium transport in the Walker River Basin, California and Nevada
L. V. Benson, D. L. Leach
1979, Journal of Geochemical Exploration (11) 227-248
During the summer of 1976 waters from tributaries, rivers, springs and wells were sampled in the Walker River Basin. Snow and sediments from selected sites were also sampled. All samples were analyzed for uranium and other elements. The resulting data provide an understanding of the transport of uranium within...
Determination of the optimum-size californium-252 neutron source for borehole capture gamma-ray analysis
F. E. Senftle, R.J. Macy, J.L. Mikesell
1979, Nuclear Instruments and Methods (158) 293-302
The fast- and thermal-neutron fluence rates from a 3.7 ??g 252Cf neutron source in a simulated borehole have been measured as a function of the source-to-detector distance using air, water, coal, iron ore-concrete mix, and dry sand as borehole media. Gamma-ray intensity measurements were made for specific spectral lines at...
Major geochemical processes in the evolution of carbonate-Aquifer systems
B.B. Hanshaw, W. Back
1979, Journal of Hydrology (43) 287-312
As a result of recent advances by carbonate petrologists and geochemists, hydrologists are provided with new insights into the origin and explanation of many aquifer characteristics and hydrologic phenomena. Some major advances include the recognition that: (1) most carbonate sediments are of biological origin; (2) they have a strong bimodal...
Comparison of XAD macroporous resins for the concentration of fulvic acid from aqueous solution
G. R. Aiken
1979, Analytical Chemistry (51) 1799-1803
Five macroreticular, nonlonlc AmberlHe XAD resins were evaluated for concentration and Isolation of fulvlc acid from aqueous solution. The capacity of each resin for fulvlc acid was measured by both batch and column techniques. Elution efficiencies were determined by desorptlon with 0.1 N NaOH. Highest recoveries were obtained with the...
Chemical and isotopic prediction of aquifer temperatures in the geothermal system at Long Valley, California
R.O. Fournier, M.L. Sorey, Robert H. Mariner, A.H. Truesdell
1979, Journal of Volcanology and Geothermal Research (5) 17-34
Temperatures of aquifers feeding thermal springs and wells in Long Valley, California, estimated using silica and Na-K-Ca geothermometers and warm spring mixing models, range from 160/dg to about 220??C. This information was used to construct a diagram showing enthalpy-chloride relations for the various thermal waters in the Long Valley region....
The Palomar planet-crossing asteroid survey, 1973-1978
E. F. Helin, E.M. Shoemaker
1979, Icarus (40) 321-328
Photographic coverage of about 80,000 deg2 of sky with the Palomar 46-cm Schmidt camera has yielded 12 new planet-crossing asteroids as well as many objects in the main asteroid belt. The estimated population of planet-crossing asteroids includes ∼100 Atens, 700 ± 300 Apollos, 1000–2000...
A room-temperature phase transition in maximum microcline - Heat capacity measurements
R. E. Openshaw, B. S. Hemingway, R. A. Robie, K. M. Krupka
1979, Physics and Chemistry of Minerals (5) 83-93
The thermal hysteresis in heat capacity measurements recently reported (Openshaw et al., 1976) for a maximum microcline prepared from Amelia albite by fused-salt ion-exchange is described in detail. The hysteresis is characterized by two limiting and reproducible curves which differ by 1% of the measured heat capacities. The lower curve,...
Notes on sedimentation activities calendar year 1977
U.S. Interagency Advisory Committee on Water Data- Subcommittee on Sedimentation
1979, Report
The need for disseminating current information on activities in the field of sedimentation was proposed by the Chairman of the Federal Interagency River Basin Committee's Subcommittee on Sedimentation shortly after the subcommittee was formed in May 1946. At the fifth meeting of the subcommittee on September 17, 1946, the members...
Dispersal and migratory patterns of San Francisco Bay produced herons, egrets, and terns
Robert E. Gill Jr., L. Richard Mewaldt
1979, North American Bird Bander (4) 4-13
San Francisco Bay, California, including its fringing marshes, supports a large and diverse water related avifauna (Grinnell and Wythe 19271 Sibley 1952, Gill 1973, 1977). Certain of man's alterations of the Bay's shallower wetlands have resulted in increased habitat diversity which has allowed colonization by several species of birds including...
Approaches, field considerations and problems associated with radio tracking carnivores
A.B. Sargeant
C. J. Amlaner Jr., D.W. MacDonald, editor(s)
1979, Book chapter, A handbook on biotelemetry and radio tracking
The adaptation of radio tracking to ecological studies was a major technological advance affecting field investigations of animal movements and behavior. Carnivores have been the recipients of much attention with this new technology and study approaches have varied from simple to complex. Equipment performance has much improved over the years,...
Drug metabolism in birds
Huo Ping Pan, James R. Fouts
1979, Pharmacology (19) 289-293
Papers published over 100 years since the beginning of the scientific study of drug metabolism in birds were reviewed. Birds were found to be able to accomplish more than 20 general biotransformation reactions in both functionalization and conjugation. Chickens were the primary subject of study but over 30 species of...
Artificial transmission to and susceptibility of Puget Sound fish to viral erythrocytic necrosis (VEN)
John R. MacMillian, Dan Mulcahy
1979, Journal of the Fisheries Research Board of Canada (36) 1097-1101
In Puget Sound, Wash., the incidence of viral erythrocytic necrosis (VEN) varied geographically from 0 to 17% in chum salmon (Oncorhynchus keta) and from 4 to 59% in Pacific herring (Clupea harengus pallasi). The disease was experimentally transmitted by intraperitoneal injection to chum, pink (O. gorbuscha), coho (O. kisutch), chinook (O. tshawytscha), sockeye...
Nesting ecology of Arctic loons
Margaret R. Petersen
1979, The Wilson Bulletin (91) 608-617
Arctic Loons were studied on the Yukon-Kuskokwim Delta, Alaska, from the time of their arrival in May to their departure in September, in 1974 and 1975. Pairs arrived on breeding ponds as soon as sufficient meltwater was available to allow their take-off and landing. Loons apparently do not initiate nests...
Determination of arsenic in geological materials by electrothermal atomic-absorption spectrometry after hydride generation
R. F. Sanzolone, T. T. Chao, E. P. Welsch
1979, Analytica Chimica Acta (108) 357-361
Rock and soil samples are decomposed with HClO4—HNO3; after further treatment, arsine is generated and absorbed in a dilute silver nitrate solution. Aliquots of this solution are injected into a carbon rod atomizer. Down to 1 ppm As in samples can be determined and there are no significant interferences, even...
The Yellow Dog peridotite and a possible buried igneous complex of lower Keweenawan age in the northern peninsula of Michigan
John S. Klasner, David W. Snider, W.F. Cannon, John F. Slack
1979, Michigan Geological Survey Report of Investigation 24
Partly serpentinized peridotite of early Keweenawan age crops out in two places along a 20-kilometer-long zone of positive aeromagnetic anomalies in northern Marquette County, Michigan. Most of the area is mantled by Pleistocene drift with few bedrock exposures.Petrographic and electron microprobe studies show that the peridotite was originally a plagioclase...
Computers at the Albuquerque Seismological Laboratory
J. Hoffman
1979, Earthquake Information Bulletin (USGS) (11) 138-140
The Worldwide Standardized Seismograph Network (WWSSN) is managed by the U.S Geological Survey in Albuquerque, N. Mex. It consists of a global network of seismographs housed in seismic observatories throughout the world. An important recent addition to this network are the Seismic Research Observatories (SRO) which combine a borehole seismometer...