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Page 6744, results 168576 - 168600

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Publication Extents

Not all publications have extents, not all extents are completely accurate
Implications of the minor element content of some major streams of the world
W. H. Durum, J. Haffty
1963, Geochimica et Cosmochimica Acta (27) 1-11
Of 15 or more minor elements in the world's principal river waters only aluminum, iron, manganese, barium and strontium range much over 100 μgl">100 μgl. (parts per billion). Most minor elements range at or below 100 μg1">100 μg1. and have...
Study of multicomponent mixtures in solution with a vertical-axis transmission-type filter-fluorometer
M. H. Fletcher
1963, Analytical Chemistry (35) 278-288
Fluorescence intensity, sensitivity, and the effect of diverse ions are discussed in relation to chemical equilibrium and the general equation for fluorescence. High sensitivity is the common denominator in eliminating or reducing all types of interference and the general equation is the key for quickly selecting conditions that give maximum...
Antiferromagnetism of UO2⋅2H2O
T. Pankey, F. E. Senftle, F. Cuttitta
1963, Journal of Chemical Physics (39) 1702-1706
Magnetic susceptibility measurements have been made on UO2·xH2O for x=1.78 to x=2.13, and from 77° to 375°K. As the value of x decreased the susceptibility increased. Both these data and structural arguments imply that the formula of this compound is U(OH)4 rather than the dihydrate form. Based on this concept the data have been corrected...
Dynamic similarity in erosional processes
A. E. Scheidegger
1963, Geofisica Pura e Applicata (56) 58-66
A study is made of the dynamic similarity conditions obtaining in a variety of erosional processes. The pertinent equations for each type of process are written in dimensionless form; the similarity conditions can then easily be deduced. The processes treated are: raindrop action, slope evolution and river erosion....
Origin of the Nubian and similar sandstones
E. D. McKee
1963, Geologische Rundschau (52) 551-587
The Nubian Sandstone and similar sandstone bodies exposed across much of northern Africa and adjoining parts of Asia are characteristically formed of clean sand that is conspicuously cross stratified throughout. Such sandstone, here called Nubian-type sandstone, ranges from Cambrian through Cretaceous in age and its genesis has been interpreted in...
Hydrogen-water vapor mixtures: Control of hydrothermal atmospheres by hydrogen osmosis
H. R. Shaw
1963, Science (139) 1220-1222
Experiments at 700°C and 800 bars total pressure demonstrate positive deviations from ideality for mixtures of hydrogen and H2O gases. The deviations are greater than predicted with Stockmayer's method. The composition of the mixture and the fugacity of hydrogen are controlled by diffusing hydrogen through metallic membranes. The results give...
Late Pleistocene glacial drainage in the Devils Lake Region, North Dakota
Saul Aronow
1963, GSA Bulletin (74) 859-874
The Devils Lake region of northeastern North Dakota is covered with glacial drift deposited by the Leeds lobe of the Mankato Substage of the Wisconsin Stage of the Pleistocene and is underlain by Pierre Shale of Cretaceous age. Associated with the Sheyenne River, which flows through the southern part of...
Unmineralized fossil bacteria
W. H. Bradley
1963, Science (141) 919-921
Unmineralized bacterial cells, mostly Micrococcus sp., but including also Streptococcus sp. and Actinomyces sp., were found in enormous numbers in lake beds of the Newark Canyon Formation of Early Cretaceous age, Eureka County, Nevada. The micrococci are black, and have an average diameter about 0.5 µ. Similar black micrococci (0.4...
Heat capacity from 12 to 305°K and entropy of talc and tremolite
R. A. Robie, J. W. Stout
1963, Journal of Physical Chemistry (67) 2252-2256
The heat capacities of talc, Mg3Si4O10(OH)2, and tremolite, Ca2Mg6Si8O22(OH)2, have been measured between 12 and 305°K. Smoothed values of heat capacity, entropy, enthalpy, and free energy are tabulated. At 298.15° K. the values of the thermodynamic functions are: talc, Cp°= 76.89 ± 0.23 cal. deg.-1 mole-1, S° = 62.33 ± 0.19 cal....
Quantitation of microorganic compounds in waters of the Great Lakes by adsorption on activated carbon
Stacy L. Daniels, Lloyd L. Kempe, E. S. Graham, Alfred M. Beeton
1963, Conference Paper, Proceedings of the 6th Conference on Great Lakes Research
Microorganic compounds in waters of Lakes Michigan and Huron have been sampled by adsorption on activated carbon in filters installed aboard the M/V Cisco and at the Hammond Bay Laboratory of the U.S. Bureau of Commercial Fisheries. The organic compounds were eluted from the carbon according to techniques developed at the U.S....
The movement, heterogeneity, and rate of exploitation of walleyes in northern Green Bay, Lake Michigan, as determined by tagging
Walter R. Crowe, Ernest G. Karvelis, Leonard S. Joeris
1963, Conference Paper, Proceedings of the North Atlantic Fish Marking Symposium
The Michigan waters of northern Green Bay are an important center for commercial and sport fishing. This 400-square-mile area has supported a commercial fishery for many years but the development of the intensive sport fishery is more recent, mostly since World War II. The commercial fishery is based on several...
Simple measurements of morphological changes in river channels and hillslopes
J.P. Miller, Luna Bergere Leopold
1963, Conference Paper
One of the principal types of observational evidence on climatic changes in the recent geologic past is in river position and elevation. It is well known that river channels, particularly those flowing through alluvium or on relatively soft bedrock, tend to develop flood plains by lateral migration of the channel....
Limnological survey of Lake Erie 1959 and 1960
Alfred M. Beeton
1963, Technical Report 6
Federal, provincial, state, and university organizations participated in cooperative limnological surveys of Lake Erie in September 1959 and August 1960 to determine the extent and severity of the low dissolved-oxygen content of the hypolimnetic waters. Observations were restricted to the central basin in 1959, but were lake-wide in 1960....