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Page 6332, results 158276 - 158300

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Publication Extents

Not all publications have extents, not all extents are completely accurate
An improved method for isolating viruses from asymptomatic carrier fish
Donald F. Amend, John P. Pietsch
1972, Transactions of the American Fisheries Society (101) 267-269
This paper describes a method using elevated levels of penicillin, streptomycin, and nystatin instead of filters to control bacteria and mold contaminants in specimens processed for virus isolation. Filters were shown to significantly reduce the virus concentration. Virus and tissue cultures were not affected by this procedure. In field tests...
Absolute stress measurements at the rangely anticline, Northwestern Colorado
R. V. de la Cruz, C.B. Raleigh
1972, International Journal of Rock Mechanics and Mining Sciences & Geomechanics Abstracts (9) 625-634
Five different methods of measuring absolute state of stress in rocks in situ were used at sites near Rangely, Colorado, and the results compared. For near-surface measurements, overcoring of the borehole-deformation gage is the most convenient and rapid means of obtaining reliable values for the...
New data on selected Ivory Coast tektites
F. Cuttitta, M. K. Carron, C. S. Annell
1972, Geochimica et Cosmochimica Acta (36) 1297-1309
Fourteen Ivory Coast tektites exhibit a range of bulk indices of refraction of 1.5156 to 1.5217 ± 0.0004 and of bulk specific gravities of 2.428 to 2.502 ±0.005. Seven of these Ivory Coast (IVC) tektites were analyzed for major and minor element content. Compared to tektites from other strewn fields,...
Predation of schistosomiasis vector snails by ostracoda (crustacea)
I. G. Sohn, L.S. Kornicker
1972, Science (175) 1258-1259
An ostracod species of Cypretta is an effective predator in laboratory experiments on 1- to 3-day-old Biomphalaria glabrata, a vector snail of the blood fluke that causes the tropical and subtropical disease schistosomiasis....
Martian physical properties experiments: The Viking Mars Lander
R.W. Shorthill, R.E. Hutton, H. J. Moore, R.F. Scott
1972, Icarus (16) 217-222
Current data indicate that Mars, like the Earth and Moon, will have a soil-like layer. An understanding of this soil-like layer is an essential ingredient in understanding the Martian ecology.The Viking Lander and its subsystems will be used in a manner similar to that used by Sue Surveyor program to...
Microcoulometric measurement of water in minerals
M. Cremer, H.N. Elsheimer, E.E. Escher
1972, Analytica Chimica Acta (60) 183-192
A DuPont Moisture Analyzer is used in a microcoulometric method for determining water in minerals. Certain modifications, which include the heating of the sample outside the instrument, protect the system from acid gases and insure the conversion of all hydrogen to water vapor. Moisture analyzer...
Surface charge density dependency on Al2O3 content in imogolite
E. A. Jenne
1972, Clays and Clay Minerals (20) 101-103
An analysis of the available literature data indicates that the cation exchange capacity and surface charge density of imogolite decrease systematically as the mole % of Al2O3 (i.e. 100 Al2O3/SIO2 + Al2O3) increases. This behavior is analogous to that of synthetic aluminosilicates. In contrast, no relation is apparent between the...
Studies on the control of whirling disease (Myxosoma cerebralis)
G.L. Hoffman Sr., G.L. Hoffman Jr.
1972, Journal of Wildlife Diseases (8) 49-53
Based on presumptive evidence of death (extrusion of polar filaments and disintegration of sporoplasm) 1.0%, 0.5%, and 0.25% calcium oxide or potassium hydroxide killed the spores of Myxosoma cerebrallis in vitro. Chlorine at 400 ppm destroyed 36% to 90% of the spores but 13% to 37% of those in the controls...
Fish viruses: Histopathologic changes associated with experimental channel catfish virus disease
K. Wolf, R. L. Herman, C. P. Carlson
1972, Journal of the Fisheries Research Board of Canada (29) 149-150
A histologic examination was carried out on fry with experimentally induced channel catfish virus disease (CCVD). The infection produced a hemorrhagic and necrotic disease with the target organs being the kidneys, liver, digestive tract, and skeletal muscle. The results agree with symptoms of the disease and with published data on...
Annual summary of water quality data for selected sites in the Pacific Northwest, October 1971 to September 1972
U.S. Geological Survey Northwest Water Resources Data Center
1972, Report
Water resources data collected in the Pacific Northwest during the 1972 water year include chemical and physical characteristics of surface water. Data included in this report were collected by the Water Resources Division of the U.S. Geological Survey under the direction of the following district chiefs: H.K. Hall, Idaho; George...
Fecundity of the sea lamprey (Petromyzon marinus) in Lake Superior
Patrick J. Manion
1972, Transactions of the American Fisheries Society (101) 718-720
An infectious agent, which appears to be a virus (RJV) has been isolated from the liver of a wild raccoon which has led to a highly fatal type of disease characterized by conjunctivitis and an elevated serum bilirubin frequently accompanied by jaundice on inoculation of raccoons. Ferrets also appear to...
H. W. Murdy, 1924-1971
H.K. Nelson
1972, Journal of Wildlife Management (36) 681-681
Abstract has not been submitted...
Downstream migration of recently transformed sea lampreys before and after treatment of a Lake Michigan tributary with a lampricide
John W. Hodges
1972, Journal of the Fisheries Research Board of Canada (29) 1237-1240
After the Pere Marquette River was treated with a lampricide in May 1964, the number of recently transformed sea lampreys (Petromyzon marinus) collected in the water-intake structure of a chemical plant near the mouth of the stream dropped 99.5%, from 13,913 (average for 1962-63 and 1963-64) to 76 (average for...