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Page 6137, results 153401 - 153425

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Publication Extents

Not all publications have extents, not all extents are completely accurate
Ground-water resources of Riverton irrigation project area, Wyoming, with a section on chemical quality of ground water
Donald Arthur Morris, O. M. Hackett, K.E. Vanlier, E. A. Moulder, W. H. Durum
1959, Water Supply Paper 1375
The Riverton irrigation project area is in the northwestern part of the Wind River basin in west-central Wyoming. Because the annual precipitation is only about 9 inches, agriculture, which is the principal occupation in the area, is dependent upon irrigation. Irrigation by surface-water diversion was begum is 1906; water is...
Fish mycobacteriosis (Tuberculosis)
T. J. Parisot, J.W. Wood
1959, Fishery Leaflet 494
The etiologic agent for the bacterial disease, "fish tuberculosis" (more correctly "mycobacteriosis"), was first observed in carp in 189& from a pond in France. Subsequently similar agents have been isolated from or observed in fish in fresh water, salt water, and brackish water, in fish in aquaria, hatcheries, and natural...
The reclamation of Indian and Abrams creeks in Great Smoky Mountains National Park
Robert E. Lennon, Phillip S. Parker
1959, Special Scientific Report - Fisheries 306
A complete program of stream reclamation was developed and applied on Indian and Abrams creeks in Great Smoky Mountains National Park. A salt-resistivity technique was used to estimate the dilution and velocity of a toxicant in running water. Streamside toxicity trials on resident fishes established minimal, effective concentrations of the...
The electrical resistivity meter in fishery investigations
Robert E. Lennon
1959, Special Scientific Report - Fisheries 287
A portable resistivity (or conductivity) meter is easily used in fishery investigations to obtain rapid and precise measurements of the electrical resistance (or conductance) of waters. These measurements can be used to estimate the total dissolved solids content of waters, to facilitate the selection of appropriate gear for efficient electrofishing,...
Burrowing activities of the larval lamprey
Philip J. Sawyer
1959, Copeia (1959) 256-257
Since the appearance in 1950 of Applegate's work on the sea lamprey in Michigan (U. S. Fish and Wildl. Serv., Spec. Sci. Rept.; Fish, No. 55) and the subsequent development of means to...
Paleotectonic maps of the Triassic system
Edwin Dinwiddie McKee, Steven S. Oriel, Keith Brindley Ketner, Marjorie Elizabeth MacLachlin, June Waterman Goldsmith, James Crawford MacLachlan, Melville R. Mudge
1959, IMAP 300
No abstract available....
Magnetic susceptibility of tektites and some other glasses
F. E. Senftle, A. Thorpe
1959, Geochimica et Cosmochimica Acta (17) 234-237
The magnetic susceptibility at several magnetic field strengths of about thirty tektites from various localities have been measured. The susceptibility ranges from 2 × 10−6 to about 7.9 × 10−6 e.m.u./g. Tektites from a given locality have similar susceptibilities. The intensity of magnetization of all the tektites measured is zero or very...
New occurrences of ferroselite (FeSe2)
R. G. Coleman
1959, Geochimica et Cosmochimica Acta (16) 296-301
Iron selenide from the uranium-vanadium ores of the Colorado Plateau was under investigation when ferroselite was described as a new mineral in Russia by Bur'yanova and Komkov (1955). Association of ferroselite with selenian pyrite and marcasite within discrete areas of these uranium-vanadium deposits suggests an unusual environment of formation. Its association...
Magnetostriction and palæomagnetism of igneous rocks
John W. Graham, A. F. Buddington, James R. Balsley
1959, Nature (183) 1318
IN a recent communication, Stott and Stacey1 report on a “crucial experiment” from which they conclude: “This excellent agreement between the dip and the directions of artificial thermoremanent magnetization of the stressed and unstressed rocks indicates that large systematic errors due to magnetostriction are most improbable in igneous rocks of types...
Semimicrodetermination of combined tantalum and niobium with selenous acid
F. S. Grimaldi, M. Schnepfe
1959, Analytical Chemistry (31) 1270-1272
Tantalum and niobium are separated and determined gravimetrically by precipitation with selenous acid from highly acidic solutions in the absence of complexing agents. Hydrogen peroxide is used in the preparation of the solution and later catalytically destroyed during digestion of the precipitate. From 0.2 to 30 mg., separately or in...
Determination of uranium in zircon
F. Cuttitta, G. J. Daniels
1959, Analytica Chimica Acta (20) 430-434
A routine fluorimetric procedure is described for the determination of trace amounts of uranium in zircon. It employs the direct extraction of uranyl nitrate with ethyl acetate using phosphate as a retainer for zirconium. Submicrogram amounts or uranium are separated in the presence of 100,000 times the amount of zirconium....
α-Radioactivity of cerium-142
F. E. Senftle, T. W. Stern, V. P. Alekna
1959, Nature (184) 630
JOHNSON AND NIER1 have measured the atomic masses of some of the rare-earth isotopes and have shown that the mass difference cerium-142—(barium-138 + helium-4) is equivalent to 1.68 ± 0.10 MeV. Similar results for the naturally occurring samarium and neodymium isotopes show that the α-active isotope of each element is the one...
Determination of chlorine in silicate rocks
L. C. Peck, E. J. Tomasi
1959, Analytical Chemistry (31) 2024-2026
In a rapid accurate method for the determination of chlorine in silicate rocks, the rock powder is sintered with a sodium carbonate flux containing zinc oxide and magnesium carbonate. The sinter cake is leached with water, the resulting solution is filtered, and the filtrate is acidified with nitric acid. Chlorine...
Climatology and the problems of western grasslands
Luna Bergere Leopold
Howard B. Sprague, editor(s)
1959, Conference Paper, Grasslands: A symposium presented at the New York meeting of the American Association for the Advancement of Science
Sixty years after Coronado, Don Juan de Onate wrote the first reasonably good description of the High Plains. He was near the present site of Wichita, Kansas, in 1601, when he arrived a t a large rancheria, or temporary Indian camp, containing more than 5000 souls. Onate's account expressed wonderment...
Water resource development and management
Luna Bergere Leopold
1959, Journal of the American Water Works Association (51) 821-827
In a sandy, riverside location in Wisconsin, my family has a farm, once abandoned by a previous owner because it would not produce much corn. By the time we bought it – for a pittance – only a few remnants of white pine remained from the magnificent stands made famous...