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Page 6376, results 159376 - 159400

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Publication Extents

Not all publications have extents, not all extents are completely accurate
Plotting of bathythermograph transect data on a printer
James B. Reynolds, Douglas R. McLain
1971, Journal of the Fisheries Research Board of Canada (28) 102-103
A program for plotting bathythermograph transect data on a computer (IBM 1130) printer is available from the Great Lakes Fishery Laboratory. Temperature values are printed in positions proportional to their depths and distances from shore. Contour lines are drawn manually through the plotted points....
A basket for washing benthological samples
James H. Selgeby
1971, Transactions of the American Fisheries Society (100) 590-591
Since benthological samples collected with dredges are usually too large to be preserved in toto, a washing method must be employed to reduce the sample volume without losing or damaging the organisms. Traditionally, the sample is washed in a sieve until the volume is small enough for convenient handling...
Fishery science
R. E. Lennon
M.J. Walker, editor(s)
1971, Book chapter, Sport Fishing USA
Abstract not submitted to date...
Two former faces of the moon
D.E. Wilhelms, D.E. Davis
1971, Icarus (15) 368-372
Systematic geologic mapping of the lunar near side has resulted in the assignment of relative ages to most visible features. As a derivative of this work, geologic and artistic interpretations have been combined to produce reconstructions of the Moon's appearance at two significant points in its history. The reconstructions, although...
A Cuban tektite
G.D. Garlick, C. W. Naeser, J. R. O’Neil
1971, Geochimica et Cosmochimica Acta (35) 731-734
A large tektite from Cuba is classified with other North American tektites on the basis of its age. The major-element chemistry, oxygen isotopic composition, refractive index and density of the Cuban tektite are within the ranges exhibited by bediasites....
Uranium-series dating of some pleistocene marine deposits in Southern California
Barney J. Szabo, J. G. Vedder
1971, Earth and Planetary Science Letters (11) 283-290
Analyses of uranium isotopes and their long-lived daughter products showed evidence of uranium migration in most of the 22 fossil mollusk shell samples from marine terrace deposits in southern California. Two samples, however, remained an ideal closed system as indicated by concordant230Th/234U...
Hydrogeochemical effects of injecting wastes into a limestone aquifer near Pensacola, Florida
Donald A. Goolsby
1971, Groundwater (9) 13-19
Acidic industrial wastes have been injected into deep wells in a limestone aquifer near Pensacola, Florida, since 1963. Prior geohydrologic studies in the area had indicated that the limestone aquifer contained nonpotable water and was overlain by an extensive clay confining layer.Two injection wells are presently being used to inject...
Tertiary climatic fluctuations and methods of analysis of tertiary floras
J. A. Wolfe
1971, Palaeogeography, Palaeoclimatology, Palaeoecology (9) 27-57
On theoretical grounds, an analysis of the physiognomy of a Tertiary leaf assemblage is more direct and reliable than a circuitous floristic analysis in assigning thermal regimes to fossil assemblages. Using primarily foliar physiognomy and secondarily floristic composition, it can be shown that: (1) some middle latitude Tertiary assemblages probably...
Seasonal distribution of zooplankton in the northern basin of Lake Chad
A.H. Robinson, Patricia K. Robinson
1971, Journal of Zoology (163) 25-61
More than 300 pairs of fine and coarse mesh plankton net samples were collected in the northern basin of Lake Chad during an 18-month period, June 1967 to November 1968. The seasonal distribution and abundance of the dominant species of Rotifera and Crustacea are given in addition to a general...
A procedure for testing the antigenicity of vaccines for immunization of fish against Furunculosis
Jamieson E. Holway, G.W. Klontz
1971, Progressive Fish-Culturist 42-44
Furnunculosis, a bacterial disease caused by Aeromonas salmonicida, is potentially one of the most devastating diseases in trout and salmon hatcheries. The disease may be controlled by three methods. The most frequently used method of control has been drug therapy. Unfortunately, the bacteria often develop resistance to the...
Paleomagnetism of San Cristobal Island, Galapagos
A. Cox
1971, Earth and Planetary Science Letters (11) 152-160
Isla San Cristobal, the most easterly of the Galapagos Islands, consists of two parts: a large volcano constitutes the southwest half of the island and an irregular apron of small cones and flows makes up the northeast half. As some of the...
Determination of silver in soils, sediments, and rocks by organic-chelate extraction and atomic absorption spectrophotometry
T. T. Chao, J.W. Ball, H. M. Nakagawa
1971, Analytica Chimica Acta (54) 77-81
A useful method for the determination of silver in soil, sediment, and rock samples in geochemical exploration has been developed. The sample is digested with concentrated nitric acid, and the silver extracted with triisooctyl thiophosphate (TOTP) in methyl isobutyl ketone (MIBK) after dilution of the...
A Pliocene flora and insect fauna from the Bering Strait region
D.M. Hopkins, J.V. Matthews, J. A. Wolfe, M.L. Silberman
1971, Palaeogeography, Palaeoclimatology, Palaeoecology (9) 211-231
A flood-plain forest has been preserved beneath a lava flow that invaded the Inmachuk River Valley in the northern part of the Seward Peninsula, Alaska, during the Pliocene Epoch. The fossil flora is of great biogeographic interest because of its position (Fig. 1)...
Analytical sensitivities and energies of thermal neutron capture gamma rays II
F. E. Senftle, H.D. Moore, D.B. Leep, A. El-Kady, D. Duffey
1971, Nuclear Instruments and Methods (93) 425-459
A table of the analytical sensitivities of the principal lines in the thermal neutron capture gamma-ray spectrum from 0 to 3 MeV has been compiled for most of the elements. A tabulation of the full-energy, single-escape, and double-escape peaks has also been made...
C13 and O18 compositions in some fresh-water carbonates associated with ultramafic rocks and serpentinites: Western United States
J. R. O’Neil, I. Barnes
1971, Geochimica et Cosmochimica Acta (35) 687-697
All carbonates associated with the ultramafic rocks and serpentinites of the western United States are shown by their stable isotope ratios to be of near-surface, low-temperature origin. These include vein materials that have been previously classified as hydrothermal. New laboratory and natural data...