I. G. Sohn
1968, Science (159) 441-442
No abstract available....
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Page 6517, results 162901 - 162925
Publication Extents
Not all publications have extents, not all extents are completely accurateJ. H. Scott, F. T. Lee, R. D. Carroll, C. S. Robinson
1968, International Journal of Rock Mechanics and Mining Sciences & Geomechanics Abstracts (5) 1-30
Seismic-refraction and electrical-resistivity measurements made along the walls of the Straight Creek Tunnel pilot bore indicate that both a low-velocity and a high-resistivity layer exist in the disturbed rock surrounding the excavation. Seismic measurements were analyzed to obtain the thickness and seismic velocity...
M. A. Lanphere
1968, Earth and Planetary Science Letters (4) 185-190
Geologic evidence suggests that a series of ultramafic complexes of the ‘Duke Island type’ located along a 560 km-long belt in southeastern Alaska crystallized from magmas of ultramafic composition. Some geologists have proposed that these magmas were derived by fractional fusion of...
Raymond L. Kerns Jr., Charles J. Mankin
1968, Clays and Clay Minerals (16) 73-81
Previous investigations have demonstrated the influences of interlayer cation composition, relative humidity, temperature, and magnitude of interlayer surface charge on the interlayer hydration of montmorillonites and vermiculites. It has been suggested that the sites of layer charge deficiencies may also have an influence upon the amount of hydration that can...
K. Wolf, M. C. Quimby, C. P. Carlson, G. L. Bullock
1968, Journal of the Fisheries Research Board of Canada (25) 383-391
Infectious pancreatic necrosis (IPN) is a virulent disease of young trouts and is easily transmitted from infected animals through water and with eggs. At present, the most effective control measure consists of propagation of specific pathogen-free stock. Methods are described for using fish cell cultures to detect IPN virus in...
J. B. Hunn, R.A. Schoettger, W. A. Willford
1968, Journal of the Fisheries Research Board of Canada (25) 25-31
Rainbow trout (Salmo gairdneri) anesthetized in 100 mg/liter of M.S. 222 at 12 C excreted the drug in free and acetylated forms via the urine during a 24-hr recovery period in freshwater. Of the M.S. 222 excreted, 77-96% was acetylated. Blood levels of free drug in anesthetized trout approximated 75%...
A.H. Truesdell
1968, Science (161) 884-886
Values of the mean activity coefficient of sodium chloride at 15°, 25°, 38° and 50°C were determined for aqueous NaCl solutions of 0.01 to 1.0 molal from electromotive force measurements on the cell: (sodium-sensitive glass electrode, aqueous sodium chloride, silver chloride-silver)....
R.M. Burress
1968, Farm Pond Harvest (2) 11,12, 22
Abstract has not been submitted...
R.E. Putz, J.T. Bowen
1968, Fish Disease Leaflet 12
No abstract available at this time...
Bernard R. Smith
1968, Annual Report 1967
No abstract available....
D.W. Scholl, E. C. Buffington, D.M. Hopkins
1968, Marine Geology (6) 297-330
The North American continental margin beneath the Bering Sea is nearly 1,300 km long and extends from Alaska to eastern Siberia. The margin is a canyon-scarred 3,200–3,400-m high escarpment separating one of the world's largest epicontinental seas (the shallow Bering Sea) and the...
R.L. Armstrong, W. Hamilton, G.H. Denton
1968, Science (159) 187-189
Potassium-argon dates for three samples of basaltic scoria from Taylor Valley, on the west side of McMurdo Sound, indicate that the basalt, which antedates and postdates major glaciations, is at least 2.7 million years old....
L. P. Greenland
1968, Analytica Chimica Acta (42) 365-370
A neutron activation procedure suitable for the routine determination of tantalum and hafnium in silicates is described. The irradiated sample is fused with sodium peroxide and leached, and the insoluble hydroxides are dissolved in dilute hydrofluoric acid-hydrochloric acid. After LaF3 and AgCl scavenges, tantalum and hafnium...
H.P. Eugster, B.F. Jones
1968, Science (161) 160-163
Sodium-aluminum silicate gels are found in surficial deposits as thick as 5 centimeters in the Magadi area of Kenya. Chemical data indicate they...
B.W. Evans, J.G. Moore
1968, Contributions to Mineralogy and Petrology (17) 85-115
The electron probe X-ray microanalyzer has been used to determine the compositional variability of the groundmass minerals and glass in 10 specimens from a complete 225-foot section of the prehistoric tholeiitic lava lake of Makaopuhi Crater, Hawaii. The order of beginning of crystallization was: (1) chromite, (2) olivine, (3) augite,...
J.H. Sass, R. J. Munroe, A.H. Lachenbruch
1968, Earth and Planetary Science Letters (4) 293-298
In many regions, crystalline rocks are covered by hundreds of meters of unconsolidated and poorly consolidated sediments. Estimates of heat flux within these sediments using standard continental techniques (temperature and conductivity measurements at intervals of 10 to 30 meters) are unreliable, mainly...
Jerold F. Rahrer
1968, Transactions of the American Fisheries Society (97) 481-484
Returns from mature lake trout (Salvelinus namaycush) tagged in western Lake Superior in 1959 and 1962-65 described here suggest that trout disperse widely from the spawning grounds after spawning and return in subsequent years. Although the data were not extensive, returns from lake trout tagged near Keweenaw Point in 1950...
Allen J. Smith, John H. Howell, George W. Piavis
1968, Copeia (1968) 461-469
The four species of lampreys native to the upper Great Lakes (American brook lamprey, Lampetra lamotteni; chestnut lamprey, Ichthyomyzon castaneus; northern brook lamprey, I. fossor; and silver lamprey, I. unicuspis) were collected in various stages of their life cycle and maintained in the laboratory until sexually mature. Secondary sex characters...
A. G. Hely, Reed W. Mower, C. A. Horr
1968, Utah Basic-Data Release 15
An investigation of the water resources of Salt Lake County, Utah, was undertaken by the Water Resources Division of the U.S. Geological Survey in July 1963. This investigation is a cooperative project financed chiefly by equal contributions of the State of Utah and the Federal Government in accordance with an...
Eberlein G. Donald, C. L. Christ
1968, Science (162) 1145-1146
Values of the uncorrected optic axial angle (2Hα) of a crystal of the calcium zeolite stellerite (CaAl2Si7Ol8 · 7H20) immersed in calcium chloride solutions...
Paul Rettman
1968, Edwards Underground Water District Bulletin 16
No abstract available....
J. L. Allen
1968, Journal of the Association of Official Analytical Chemists (51) 619-621
A gas chromatographic method has been described for the analysis of mixed barbiturates in solid dosage forms. Analysis on a 10% SE-30 column gave good separations for butabarbital, amobarbital, secobarbital, pentobarbital, and/or phenobarbital; amobarbital is not separated adequately from pentobarbital. An internal standard, mephobarbital, is used to minimize injection errors....
Jerome W. Zimmerman
1968, Special Scientific Report - Fisheries 559
Water quality of streams tributary to Lakes Superior and Michigan was analyzed for 142 stations on 99 streams tributary to Lake Superior and 83 stations on 56 streams tributary to Lake Michigan during 1962-65. Concentrations of aluminum, copper, and iron were not affected greatly by flow or season. Magnesium, calcium,...
H.K. Nelson
1968, Atlantic Naturalist (23) 230-232
Review of: Waterfowl. Their Biology and Natural History. Johnsgard, Paul A. University of Nebraska Press, Lincoln and London 1968. XVIII+138 pages....
Harold F. Duebbert
1968, Prairie Naturalist (1) 14-14
Abstract has not been submitted...