Map showing areas serviced by public water-supply agencies in 1973 greater Pittsburgh region, southwestern Pennsylvania
Robert M. Beall
1974, Miscellaneous Field Studies Map 607
Urban water planning, development, and management are many sectored, costly efforts, subject to a multitude of controls and demands including those imposed by nature. One primary concern in development is for providing a dependable and safe water supply. In spite of a bountiful natural availability, the process of satisfying consumer...
Antiferromagnetic inclusions in lunar glass
A. N. Thorpe, F. E. Senftle, Charles Briggs, Corrine Alexander
1974, Earth and Planetary Science Letters (22) 85-90
The magnetic susceptibility of 11 glass spherules from the Apollo 15, 16, and 17 fines and two specimens of a relatively large glass spherical shell were studied as a function of temperature from room temperature to liquid helium temperatures. All but one...
An experimental trap net fishery, Lake Oahe, South Dakota, 1965
James A. Gabel
1974, Technical Paper 82
Large trap nets were evaluated as a commercial gear for capturing buffalo fish during July-September 1965. During the 72-day fishing period, 13,171 fish weighing 21,669 kg were taken. Bigmouth buffalo (Ictiobus cyprinellus) and smallmouth buffalo (Ictiobus bubalus) dominated the catch (78.2% by weight). Eight sport species accounted for 3.6% of...
Potential mineral reserves
V.E. McKelvey
1974, Resources Policy (1) 75-81
No abstract available....
Osmium, ruthenium, iridium and uranium in silicates and chromite from the eastern Bushveld Complex, South Africa
R.h. Gijbels, Hugh T. Millard Jr., G. A. Desborough, A.J. Bartel
1974, Geochimica et Cosmochimica Acta (38) 319-337
Osmium, ruthenium, iridium and uranium contents were determined in eight ortho pyroxene, seven plagioclase, and three chromite mineral separates from the eastern Bushveld Complex. Neutron activation analysis was used to measure the platinum metals, and uranium was determined by a fission track technique....
Migration and redistribution of zinc and cadmium in marine estuarine system
Charles W. Holmes, Elizabeth A. Slade, C.J. McLerran
1974, Environmental Science & Technology (8) 255-259
A survey of trace-element levels in the estuarine sediments of Texas shows that Corpus Christi Bay has anomalously high concentrations of zinc and cadmium. Maps of elemental abundance within the bay indicate large concentration gradients, the highest values being near the harbor entrance. Seasonal determinations of metal levels in the...
Comparative studies on extraction of sediment interstitial waters: Discussion and comment on the current state of interstitial water studies
F.T. Manheim
1974, Clays and Clay Minerals (22) 337-343
The implication by Murthy and Ferrell (1972)that interstitial water studies are in a confused state is criticized on the basis that the authors have not drawn on a considerable body of data, especially Soviet studies since the 1950's, and results of the Deep Sea Drilling Project. Pressure filtration systems for...
Episodic Cenozoic volcanism and tectonism in the Andes of Peru
D. C. Noble, E.H. McKee, E. Farrar, U. Petersen
1974, Earth and Planetary Science Letters (21) 213-220
Radiometric and geologic information indicate a complex history of Cenozoic volcanism and tectonism in the central Andes. K-Ar ages on silicic pyroclastic rocks demonstrate major volcanic activity in central and southern Peru, northern Chile, and adjacent areas during the Early and Middle...
Lunar crater depths from orbiter IV long-focus photographs
D.W.G. Arthur
1974, Icarus (23) 116-133
The paper presents method and results for the determination of the depths of more than 1900 small lunar craters from measures of shadows on the long-focus pictures obtained by Lunar Orbiter IV. The method for converting the measured shadow length into the true...
Water quality effects of seepage from earthen dams
C. Yost Jr., J.W. Naney
1974, Journal of Hydrology (21) 15-26
Analyses of surface and seepage waters from selected floodwater retarding structures in west-central Oklahoma, U.S.A. show the salinity of seepage to be several times greater than that of the impounded waters. The increases in concentration of the several chemical components are not proportional....
A simple method for cleaning and re-sterilizing disposable serological pipettes
K. Wolf, G. L. Bullock, M. C. Quimby
1974, Journal of Applied Bacteriology (37) 447-450
No abstract available....
Observations on the jumping and escapement of white amur
James E. Ellis
1974, Progressive Fish-Culturist (36) 15-15
No abstract available. ...
Iridium in some calcic and calc-alkalic batholithic rocks of the western United States
L. P. Greenland, D. Gottfried, R.I. Tilling
1974, Chemical Geology (14) 117-122
Neutron-activation determinations of Ir in rocks of the Southern California and Boulder (Montana) batholiths show that the Ir content is low and variable in both batholiths, extending over 1 to 2 orders of magnitude and having a combined median of 0.006 ppb...
A solvent extraction study of molybdenum chloride and molybdenum thiocyanate complexes
L. P. Greenland, E.G. Lillie
1974, Analytica Chimica Acta (69) 335-346
The effect of reducing agents on molybdenum(VI) solutions in hydrochloric acid was studied by a solvent extraction technique to elucidate the composition of the colored molybdenum thiocyanate complex. Neither copper(I) chloride nor ascorbic acid have any effect on the extraction of MoO2Cl2; it is inferred...
Ejecta from large craters on the Moon: Comments on the geometric model of McGetchin et al.
R.J. Pike
1974, Earth and Planetary Science Letters (23) 265-271
Amendments to a quantitative scheme developed by T.R. McGetchin et al. (1973) for predicting the distribution of ejecta from lunar basins yield substantially thicker estimates of ejecta, deposited at the basin rim-crest and at varying ranges byond, than does the original model....
Oxygen isotope activities and concentrations in aqueous salt solutions at elevated temperatures: Consequences for isotope geochemistry
A.H. Truesdell
1974, Earth and Planetary Science Letters (23) 387-396
Studies of the effect of dissolved salts on the oxygen isotope activity ratio of water have been extended to 275°C. Dehydrated salts were added to water of known isotope composition and the solutions were equilibrated with CO2 which was sampled for analysis. For...
Seasonal water potential changes in Sonoran Desert shrubs in relation to topography
William L. Halvorson, Duncan T. Patten
1974, Ecology (55) 173-177
Water potential in Sonoran Desert shrubs was recorded from September 1968 through September 1969. Special attention was paid to recording maximum and minimum potentials on a seasonal basis and diurnal fluctuations during the wettest and driest periods of the year. Franseria deltoidea developed the lowest potential (—85 bar) of the...
Hydrologic data for Mountain Creek, Trinity River Basin, Texas, 1972
H.D. Buckner
1974, Report
No abstract available....
Swans resting on the surface of a dry lake
D.S. Gilmer
1974, Prairie Naturalist
Abstract has not been submitted...
Land use map for Tucson quadrangle Arizona, and complementary tables for census tracts, drainage basins, land ownership, land use, and soils
Robin Fegeas
1974, Open-File Report 74-89
No abstract available....
Geology of the Buchanan Quadrangle, Liberia
Russell G. Tysdal
1974, Open-File Report 74-308
No abstract available....
Aging tricolored blackbirds by cranial ossification
R. W. DeHaven, F.T. Crase, M. R. Miller
1974, Bird-Banding (45) 156-159
No abstract available....
Polypodium sp. (Coelenterata) found in North American sturgeon
G. L. Hoffman, E.V. Raikova, W.G. Yoder
1974, Journal of Parasitology (60) 548-550
No abstract available. ...
Raceway production: four costs that can make or break you
K.O. Allen
1974, Fish Farming Industries (5) 23-25
Nitrogen and phosphorus balance of grass carp, Ctenopharyngodon idella, fed elodea, Egeria denea
J.G. Stanley
1974, Transactions of the American Fisheries Society (103) 587-592
The herbivorous grass carp fed winter elodea exhibited a negative nitrogen balance in metabolism, suggesting that food having a higher protein content would be required for normal growth. About a third of the phosphorus contained in food was retained; hence, a combination of aquatic plants and grass carp might afford...
