Infectious pancreatic necrosis: Transmission with iodine-treated and nontreated eggs of brook trout (Salvelinus fontinalis)
G. L. Bullock, R.R. Rucker, D. Amend, K. Wolf, H. M. Stuckey
1976, Journal of the Fisheries Research Board of Canada (33) 1197-1198
Experiments conducted simultaneously at two laboratories have shown brook trout (Salvelinus fontinalis) egg transmission of the virus of infectious pancreatic necrosis with eggs treated with 100 ppm iodine (as Wescodyne®) and with nontreated eggs....
Age of the Hawaiian-Emperor bend
G. B. Dalrymple, D.A. Clague
1976, Earth and Planetary Science Letters (31) 313-329
40Ar/39Ar age data on alkalic and tholeiitic basalts from Diakakuji and Kinmei Seamounts in the vicinity of the Hawaiian-Emperor bend indicate that these volcanoes are about 41 and 39 m.y. old, respectively. Combined with previously published age data on Yuryaku and Ko¯ko Seamounts, the new data indicate that the best...
A magnetic method for determining the geometry of hydraulic fractures
J.D. Byerlee, M.J.S. Johnston
1976, Pure and Applied Geophysics PAGEOPH (114) 425-433
We propose a method that may be used to determine the spatial orientation of the fracture plane developed during hydraulic fracture. In the method, magnetic particles are injected into the crack with the fracturing fluid so as to generate a sheet of magnetized material. Since the magnetization of a body...
Studies of quaternary saline lakes-II. Isotopic and compositional changes during desiccation of the brines in Owens Lake, California, 1969-1971
I. Friedman, G.I. Smith, Kenneth G. Hardcastle
1976, Geochimica et Cosmochimica Acta (40) 501-511
Owens Lake is an alkaline salt lake in a closed basin in southeast California. It is normally nearly dry, but in early 1969, an abnormal runoff from the Sierra Nevada flooded it to a maximum depth of 2·4 m. By late summer of 1971, the lake was again nearly dry...
Capturing and marking howler monkeys for field behavioral studies
N.J. Scott Jr., A.F. Scott, L.A. Malmgren
1976, Primates (17) 527-533
Methods for capturing and marking howler monkeys for ecological studies are discussed. Systems for capturing and handling animals are compared. A dart with liquid Sernylan for capture and Sernylan or Ketamine as a holding drug was preferred to darts using powdered succinylcholine chloride (SCC) and ether. The effectiveness of both...
Sea otters: pillars of the nearshore community
J. F. Palmisano, J. A. Estes
1976, Natural History (85) 46-53
Twenty-ninth winter bird population study. No. 52. Catclaw-rabbitbrush desert wash
J.V. Remsen Jr., K.H. Berry, E. Wessman
1976, American Birds (30) 1061
Twenty-ninth winter bird population study. No. 49. Creosote-burro bush desert scrub
J.V. Remsen Jr., E. Wessman, K.H. Berry
1976, American Birds (30) 1059
Choline metabolism and nutritional requirement of lake trout (Salvelinus namaycush)
H. G. Ketola
1976, Journal of Animal Science (43) 474-477
Duplicate lots of 2-g lake trout (Salvelinus namaycush) were fed a purified diet alone and with equimolar supplements of aminoethanol, methylaminoethanol, dimethylaminoethanol, choline or betaine. Supplements of choline, methyl- and dimethylaminoethanol significantly increased growth rate and reduced liver fat content, whereas aminoethanol and betaine did not. These results suggest that trout...
Cecal fermentation in mallards in relation to diet
M. R. Miller
1976, Condor (78) 107-111
No abstract available....
Concretionary manganese-iron oxides in streams and their usefulness as a sample medium for geochemical prospecting
G.A. Nowlan
1976, Journal of Geochemical Exploration (6) 193-210
Correlation studies of 400 samples of sieved stream sediments and 325 samples of fluvial, concretionary Mn-Fe oxides from Maine resulted in the separation of elements into the following categories: (1) elements not scavenged by Mn-Fe oxides — B, Cr, K, Mg, Rb, Sc, Ti, V, and Zr; (2) elements...
Instrumental activation analysis of coal and fly ash with thermal and epithermal neutrons and short-lived nuclides
E. Steinnes, J.J. Rowe
1976, Analytica Chimica Acta (87) 451-462
Instrumental neutron activation analysis is applied to the determination of about 25 elements in coals and fly ash by means of nuclides with half-lives of less than 48 h ; thermal and epithermal irradiations are used. The results indicate that epithermal activation is preferable for twelve of the elements (Ga,...
Rapid determination of nanogram amounts of tellurium in silicate rocks
L. P. Greenland, E.Y. Campbell
1976, Analytica Chimica Acta (87) 323-328
A hydride-generation flameless atomic-absorption technique is used to determine as little as 5 ng g-1 tellurium in 0.25 g of silicate rock. After acid decomposition of the sample, tellurium hydride is generated with sodium borohydride and the vapor passed directly to a resistance-heated quartz cell mounted in an atomic-absorption spectrophotometer. Analyses...
Exchange of Na+ and K+ between water vapor and feldspar phases at high temperature and low vapor pressure
R.O. Fournier
1976, Geochimica et Cosmochimica Acta (40) 1553-1561
In order to determine whether gas (steam) containing a small amount of dissolved alkali chloride is effective in promoting base exchange of Na+ and K+ among alkali feldspars and coexisting brine or brine plus solid salt, experiments were carried out at 400–700°C and steam densities ranging down to less than 0.05. For...
Myxosoma cerebralis: In vitro sporulation of the Myxosporidan of salmonid whirling disease
K. Wolf, M.E. Markiw
1976, Journal of Protozoology (23) 425-427
Trophozoites and other pre-spore stages of the myxosporidan Myxosoma cerebralis were taken from infected rainbow trout (Salmo gairdneri) and cultured in vitro. Cultures eventually yielded mature spores capable of discharging their polar capsules. This is the first report of culture of a myxosporidan....
Zoned Cr, Fe-spinel from the La Perouse layered gabbro, Fairweather Range, Alaska
G.K. Czamanske, G. R. Himmelberg, F.E. Goff
1976, Earth and Planetary Science Letters (33) 111-118
Zoned spinel of unusual composition and morphology has been found in massive pyrrhotite-chalcopyrite-pent-landite ore from the La Perouse layered gabbro intrusion in the Fairweather Range, southeastern Alaska. The spinel grains show continuous...
Resource data bases-Resource assessment
A. L. Clark
1976, Computers & Geosciences (2) 309-311
The U.S. Geological Survey's Office of Resource Analysis is developing computer methods for the handling of mineral-resources data in order to provide improved means for addressing and manipulating data. These methods include: computerized data files and predictive resource models. Data files contain the raw or disaggregated information on mineral deposits...
Tectonic implications
Mark D. Zoback, J.D. Byerlee
1976, International Journal of Rock Mechanics and Mining Sciences & Geomechanics Abstracts (13) 291-294
[No abstract available]...
Mixing of carbonate waters
T.M.L. Wigley, Niel Plummer
1976, Geochimica et Cosmochimica Acta (40) 989-995
When mineral solutions of different compositions are mixed, the molalities and activities of individual ions in the mixture are often non-linear functions of their end-member values. This non-linearity is particularly significant in determining mineral saturation levels. Mixtures of saturated solutions may be either...
Water-quality data for canals in eastern Broward County, Florida 1969-1974
B.G. Waller, W. L. Miller, T.R. Beaven
1976, Open-File Report FL 75-009
No abstract available....
The February 1969 east rift eruption of Kilauea Volcano, Hawaii
Donald A. Swanson, D. B. Jackson, R. Y. Koyanagi, T. L. Wright
1976, Professional Paper 891
No abstract available....
Albedo boundaries on Mars in 1972: Results from Mariner 9
R. M. Batson, J.L. Inge
1976, Icarus (27) 531-536
A map of “albedo” boundaries (light and dark markings) on Mars was prepared from Mariner 9 images. After special digital processing, these pictures provide detailed locations of albedo boundaries, which is significant in interpreting recent eolian activity. Derivation of absolute albedo values from the spacecraft data was not attempted. The...
Late Pleistocene and Holocene depositional trends, processes, and history of Astoria deep-sea fan, Northeast Pacific
H. Nelson
1976, Marine Geology (20) 129-173
The asymmetrical Astoria Fan (110 × 180 km) developed off the Columbia River and Astoria submarine canyon during the Pleistocene. Morphology, stratigraphy, and lithology have been outlined for a Pleistocene turbidite, and a Holocene hemipelagic sedimentary regime to generate geologically significant criteria for comparison with ancient equivalent deposits. Both gray...
Faunal remains from the excavated sites
C. L. Douglas
G.J. Gumerman, R.C. Euler, editor(s)
1976, Book chapter, Papers on the archaeology of Black Mesa, Arizona
No abstract available....
Effects of inbreeding on rainbow trout populations
H. L. Kincaid
1976, Transactions of the American Fisheries Society (105) 273-280
