Predicting rock bursts in mines
H. Spall
1979, Earthquake Information Bulletin (USGS) (11) 89-94
In terms of lives lost, rock bursts in underground mines can be as hazardous as earthquakes on the surface. So it is not surprising that fo the last 40 years the U.S Bureau of Mines has been using seismic methods for detecting areas in underground mines where there is a...
Sociological aspects of earthquake prediction
H. Spall
1979, Earthquake Information Bulletin (USGS) (11) 102-105
Henry Spall talked recently with Denis Mileti who is in the Department of Sociology, Colorado State University, Fort Collins, Colo. Dr. Mileti is a sociologst involved with research programs that study the socioeconomic impact of earthquake prediction. ...
Earthquake prediction research at the Seismological Laboratory, California Institute of Technology
H. Spall
1979, Earthquake Information Bulletin (USGS) (11) 95-101
The Seismological Laboratory at the California Institute of Techonology (Caltech) was founded in 1928 as a result of a study by the Carnegie Institue of Washington. The study was based primarily on a 1916 report by H. O. Wood which recommended that a network of seismic stations be established in...
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...
Stratigraphic sections of Jurassic San Rafael Group and adjacent rocks in Delta, Mesa, and Montrose Counties, Colorado
James Clifton Wright, Dayton Delbert Dickey
1979, Open-File Report 79-250
No abstract available....
Gas-liquid chromatographic determination of Bayer 73 in fish, aquatic invertebrates, mud, and water
C.W. Luhning, P.D. Harman, J.B. Sills, V. K. Dawson, J. L. Allen
1979, Journal of the Association of Official Analytical Chemists (62) 1141-1145
A gas-liquid chromatographic (GLC) method is described for determining residues of Bayer 73 (2-aminoethanol salt of 2’,5-dichloro-4’-nitrosalicylanilide) in fish muscle, aquatic invertebrates, mud, and water by analyzing for 2-chloro-4-nitroaniline (CNA), a hydrolysis product of Bayer 73. Bayer 73 residues are extracted from fish muscle tissue, invertebrates, and mud with acetone-formic...
Sea ice as a factor in seabird distribution and ecology in the Beaufort, Chukchi, and Bering seas
G.J. Divoky
1979, Research Report 11
Annotated list of the fishes of the Lake Ontario watershed
Edwin J. Crossman, Harry D. Van Meter
1979, Technical Report 36
This annotated list of the fishes of Lake Ontario and its watershed is based on published distribution records, museum collections, and reports of fish surveys that confirm the occurrence of fish species dating back to the 1850's. It includes 130 forms (129 spp. + the hybrid splake), 20 of which...
Barometric fluctuations in wells tapping deep unconfined aquifers
Edwin P. Weeks
1979, Water Resources Research (15) 1167-1176
Water levels in wells screened only below the water table in unconfined aquifers fluctuate in response to atmospheric pressure changes. These fluctuations occur because the materials composing the unsaturated zone resist air movement and have capacity to store air with a change in pressure. Consequently, the translation of any pressure...
Plaque-forming cells and humoral antibody in rainbow trout (Salmo gairdneri) induced by immersion in a Yersinia ruckeri O-antigen preparation
D. P. Anderson, B.S. Roberson, O. W. Dixon
1979, Journal of the Fisheries Research Board of Canada (36) 636-639
Rainbow trout (Salmo gairdneri) were exposed to the O-antigen of Yersinia ruckeri by various immunization regimens. The passive hemolytic plaque assay was used to show specific splenic plaque-forming cells (PFC) and passive hemagglutination demonstrated humoral antibody titers in fish injected with or immersed in the antigen preparations. Preceding antigen immersion with a...
Development of standard reference lines of rainbow trout
H. L. Kincaid
1979, Transactions of the American Fisheries Society (108) 457-461
Myxosoma cerebralis: A method for staining spores and other stages with silver nitrate
K. Wolf, M.E. Markiw
1979, Journal of the Fisheries Research Board of Canada (36) 88-89
Eleven dye substances were tested for their ability to stain Myxosoma cerebralis and to be retained through either the pepsin-trypsin-dextrose or the plankton centrifuge method of releasing and concentrating spores. Silver nitrate proved to be the best; it produced a distinctive brown color that has been retained by spores through 2.5 yr of...
Membrane immunoglobulin is present on thymic and splenic lymphocytes of the trout Salmo gairdneri
G.W. Warr, D. DeLuca, B.R. Griffin
1979, Journal of Immunology (123) 910-917
Three rabbit antisera raised to trout IgM showed positive immunofluorescent reactions with lymphocytes of trout spleen and thymus. These antisera showed no detectable cross-reactivity with keyhole limpet hemocyanin, as determined by direct radioimmune precipitation and adsorption, and did not appeare to react significantly with carbohydrate moieties on trout IgM, as...
Influence of dietary zinc on cataracts in rainbow trout (Salmo gairdneri)
H. G. Ketola
1979, Journal of Nutrition (109) 965-969
The purpose of this study was to determine the cause of lens cataracts in hatchery trout fed diets containing white fish meal. After preliminary investigations, three experiments were conducted with fry of rainbow trout (Salmo gairdneri) that were fed practical-type diets containing either 40% herring meal (control diet) or 40%...
Exploitation of marine mammals: r-selection of K-strategists?
J. A. Estes
1979, Journal of the Fisheries Research Board of Canada (36) 1209-1217
The importance of marine mammals as predators to the organization of marine communities is poorly known, although in several structurally analogous systems the ecological and evolutionary roles of predators are known to be of considerable importance. Occupation of the marine environment by mammals probably carried physiological constraints for single-young pregnancies...
Induction of antibody-producing cells in rainbow trout, Salmo gairdneri Richardson, by flush exposure
D. P. Anderson, B.S. Roberson, O. W. Dixon
1979, Journal of Fish Biology (15) 317-322
Splenic antibody-producing cells were produced by rainbow trout that had been exposed to O-antigens extracted from Yersinia ruckeri and Aeromonas salmonicida by adding the concentrated antigen preparation directly into the water of the tank holding the fish for a flush exposure. This method was compared with the proven techniques of exposure: intraperitoneal injection or...
Preliminary geological mapping of Io
H. Masursky, G. G. Schaber, L.A. Soderblom, R.G. Strom
1979, Nature (280) 725-729
Terrain units and their global distribution on Io are summarised. A map of the complex region of Io is also presented. ?? 1979 Nature Publishing Group....
Geochemical surveys in the United States in relation to health.
H. A. Tourtelot
1979, Philosophical Transactions of the Royal Society B: Biological Sciences (288) 113-125
Geochemical surveys in relation to health may be classified as having one, two or three dimensions. One-dimensional surveys examine relations between concentrations of elements such as Pb in soils and other media and burdens of the same elements in humans, at a given time. The spatial distributions of element concentrations...
Modern marine sediments as a natural analog to the chemically stressed environment of a landfill
M.J. Baedecker, W. Back
1979, Journal of Hydrology (43) 393-414
Chemical reactions that occur in landfills are analogous to those reactions that occur in marine sediments. Lateral zonation of C, N, S, O, H, Fe and Mn species in landfills is similar to the vertical zonation of these species in marine sediments and results from the following reaction sequence: (1)...
Seismic gaps and source zones of recent large earthquakes in coastal Peru
J. W. Dewey, W. Spence
1979, Pure and Applied Geophysics PAGEOPH (117) 1148-1171
The earthquakes of central coastal Peru occur principally in two distinct zones of shallow earthquake activity that are inland of and parallel to the axis of the Peru Trench. The interface-thrust (IT) zone includes the great thrust-fault earthquakes of 17 October 1966 and 3 October 1974. The coastal-plate interior (CPI)...
The determination of silver in silicate rocks by electrothermal atomic absorption spectrometry
P. J. Aruscavage, E.Y. Campbell
1979, Analytica Chimica Acta (109) 171-175
Silver is extracted from a 20% tartaric acid solution by using butyl acetate and diphenylthiourea, and the organic layer is analyzed directly by the graphite-furnace technique. The precisions is ca. 8% as estimated from multiple analysis of 13 standard rocks; there are no systematic errors. The detection limit is 2.4...
Measured crustal deformation in Imperial Valley, California
B. E. Lofgren
1979, Geothermics (8) 267-272
Precise geodetic surveys since 1972 indicate that significant vertical deformation of the land surface continues in Imperial Valley, California. Measured vertical changes as great as 3-5 cm per year indicate that two types of tectonic movement are occurring: (1) a downward regional tilt of the valley surface from the Mexican...
Massive deep-sea sulphide ore deposits discovered on the East Pacific Rise
Jean Francheteau, H.D. Needham, P. Choukroune, Tierre Juteau, M. Seguret, Richard D. Ballard, P.J. Fox, William Normark, A. Carranza, D. Cordoba, J. Guerrero, C. Rangin, H. Bougault, P. Cambon, R. Hekinian
1979, Nature (277) 523-528
Massive ore-grade zinc, copper and iron sulphide deposits have been found at the axis of the East Pacific Rise. Although their presence on the deep ocean-floor had been predicted there was no supporting observational evidence. The East Pacific Rise deposits represent a modern analogue of Cyprus-type sulphide ores associated with...
Pattern drilling exploration: Optimum pattern types and hole spacings when searching for elliptical shaped targets
L.J. Drew
1979, Journal of the International Association for Mathematical Geology (11) 223-254
In this study the selection of the optimum type of drilling pattern to be used when exploring for elliptical shaped targets is examined. The rhombic pattern is optimal when the targets are known to have a preferred orientation. Situations can also be found where a rectangular pattern is as efficient...
Removal of contaminants from landfill leachates by filtration through glauconitic greensands
N. Spoljaric, W.A. Crawford
1979, Environmental Geology (2) 359-363
Passing landfill leachate through glauconitic greensand filters reduces the heavy metal cation content, lessens the unpleasant odor, and diminishes the murkiness of the leachate. The capability of the greensand to trap metal cations is increased by prolonging the contact time between the leachate and the greensand. Flushing the charged greensand...
