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Page 5755, results 143851 - 143875

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Not all publications have extents, not all extents are completely accurate
Daily water-temperature records for Utah streams, 1944-68
G.L. Whitaker
1970, Utah Basic-Data Release 19
Temperature is an important and sometimes critical factor for many uses of water. Temperature affects the usefulness of the water for recreation, fish and wildlife propagation, industrial cooling, food processing, and manufacturing. Temperature also affects the ability of the water to accommodate biologic and vegetative types of life.The purpose of...
Correction of bias in belt transect studies of immotile objects
David R. Anderson, R.S. Pospahala
1970, Journal of Wildlife Management (34) 141-146
Unless a correction is made, population estimates derived from a sample of belt transects will be biased if a fraction of, the individuals on the sample transects are not counted. An approach, useful for correcting this bias when sampling immotile populations using transects of a fixed width, is presented....
Hydrologic research on instrumented watersheds
Luna Bergere Leopold
1970, Conference Paper, Colloque de Wellington Symposium, 1970, Results of Research on Representative and Experimental Basins (IASH Publication 97)
The successful research man is the one who asks himself the right question. Research must go on primarily in the mind and only secondarily in the physical and biological world. It is only too easy to confuse the choice of a proper tool and the choice of a proper question....
Waterfowl in relation to land use and water levels on the Spring Run Area
Gary L. Krapu, D.R. Parsons, M.W. Weller
1970, Iowa State Journal of Science (44) 437-452
Low water levels during critical phases of the breeding cycle appear to have caused population declines of waterfowl and other marsh birds on the Spring Run Game Management Area. Pair-counts indicated a decline from 70 pairs of waterfowl in 1965 to 2 pairs in 1968. Nest success of upland nesting...
Accumulation of radionuclides in bed sediments of the Columbia River between Hanford reactors and McNary Dam
Jack L. Nelson, W.L. Haushild
1970, Water Resources Research (6) 130-137
Amounts of radionuclides from the Hanford reactors contained in bed sediments of the Columbia River were estimated by two methods: (1) from data on radionuclide concentration for the bed sediments between the reactors and McNary Dam, and (2) from data on radionuclide discharge for river stations at Pasco, Washington, and...
Chemotherapy of fish diseases: A review
R. L. Herman
1970, Journal of Wildlife Diseases (6) 31-34
Fish suffer from environmental, nutritional, viral, bacterial, parasitic, and neoplastic diseases, many of which are similar to those of higher animals. The prevention and treatment of these diseases follow the same principles as diseases of other animals. Fish culture is similar to poultry husbandry in that large numbers of animals...
Salmonid viruses: Double infection of RTG-2 cells with Egtved and infectious pancreatic necrosis viruses
K. Wolf, P. E. Vestergard Jorgensen
1970, Archiv Fur Die Gesamte Virusforschung (29) 337-342
Egtved and infectious pancreatic necrosis (IPN) viruses were applied at high multiplicity alone and in combination to RTG-2 cells in liquid medium. Procedures were used which selectively suppressed one or the other virus, and the yields were determined after 64 hours at 15°C. The viruses showed an increase of 280...
The demography of the lizard, Uta stansburiana Baird and Girard, in southern Nevada
F.B. Turner, G.A. Hoddenbach, P.A. Medica, J.R. Lannom
1970, Journal of Animal Ecology (39) 505-519
Between 1966 and 1967 populations of Uta stansburiana in southern Nevada increased about 40%. Over the next year they declined by about 50%. These changes are explained in terms of annual differences in fecundity and survival. Most females laid five clutches of...
Lithium metaborate flux in silicate analysis
C.O. Ingamells
1970, Analytica Chimica Acta (52) 323-334
Lithium metaborate is an effective flux for silicates and other rock-forming minerals. The glass resulting from fusion is mechanically strong, reasonably nonhygroscopic, and is readily soluble in dilute acids. These characteristics lead to its use in X-ray spectrography and in methods which require whole-rock solutions,...
Retention of mercury by salmon
Donald F. Amend
1970, Progressive Fish-Culturist (32) 192-194
Consuming fish that have been exposed repeatedly to mercury derivatives is a potential public health hazard because fish can accumulate and retain mercury in their tissues (Rucker, 1968). Concern has been expressed in the United States because mercurials have been used extensively in industry and as prophylactic and...
UThPb age of Apollo 12 rock 12013
M. Tatsumoto
1970, Earth and Planetary Science Letters (9) 193-200
A UThPb isotopic study of three chips from lunar rock 12013 indicates that parental material of the intrusion breccia formed quite early in the moon's history, possibly 3.9 to 4.3 by ago. The UThPb characteristics of the rock are distinctly different from those of other Apollo 12 igneous rocks and...
The diffusion of ions in unconsolidated sediments
F.T. Manheim
1970, Earth and Planetary Science Letters (9) 307-309
Diffusion in unconsolidated sediments generally proceeds at rates ranging from half to one twentieth of those applying to diffusion of ions and molecules in free solution. Diffusion rates are predictable with respect to porosity and path tortuosity in host sediments, and can be conveniently measured by determinations of electrical resistivity...
Use of microearthquakes in the study of the mechanics of earthquake generation along the San Andreas fault in central California
J. P. Eaton, W.H.K. Lee, L. C. Pakiser
1970, Tectonophysics (9) 259-282
A small, dense network of independently recording portable seismograph stations was used to delineate the slip surface associated with the 1966 Parkfield-Cholame earthquake by precise three dimensional mapping of the hypocenters of its aftershocks. The aftershocks were concentrated in a very narrow vertical zone beneath or immediately adjacent to the...
Effect of sample inhomogeneity in K Ar dating
J. C. Engels, C.O. Ingamells
1970, Geochimica et Cosmochimica Acta (34) 1007-1017
Error in K-Ar ages is often due more to deficiencies in the splitting process, whereby portions of the sample are taken for potassium and for argon determination, than to imprecision in the analytical methods. The effect of the grain size of a sample and of the composition of a contaminating...
Taunton River basin
John R. Williams, Richard E. Willey
1970, Massachusetts Hydrologic - Data Report 12
The Taunton River, emptying into an arm of Narragansett Bay at Fall River, drains 528 square miles of interior southeastern Massachusetts. The Taunton River basin is separated from the basins of short streams draining to the coast by low divides on the east, south, and southwest. On the west and...
An improved method for size distribution of stream bed gravel
Luna Bergere Leopold
1970, Water Resources Research (6) 1357-1366
Random sampling of surface rocks on a gravel bar is biased toward larger sizes which, because of their area, are more likely to be picked up. Weighting can eliminate this bias. Data on average weight of a single rock are used to change numbers of rocks to weights, thus yielding...