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Page 5933, results 148301 - 148325

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Publication Extents

Not all publications have extents, not all extents are completely accurate
Vacuum-jacketed hydrofluoric acid solution calorimeter
R. A. Robie
1965, Review of Scientific Instruments (36) 484-486
A vacuum‐jacketed metal calorimeter for determining heats of solution in aqueous HF was constructed. The reaction vessel was made of copper and was heavily gold plated. The calorimeter has a cooling constant of 0.6 cal‐deg−1‐min−1, approximately ¼ that of the air‐jacketed calorimeters most commonly used with HF. It reaches equilibrium within 10 min after turning off the heater current. Measurements...
Food of lake trout in Lake Superior
William R. Dryer, Leo F. Erkkila, Clifford L. Tetzloff
1965, Transactions of the American Fisheries Society (94) 169-176
Stomachs were examined from 1,492 lake trout and 83 siscowets collected from Lake Superior. Data are given on the food of lake trout of legal size (17 inches or longer) by year, season, and depth of water, and on the relation between food and size among smaller lake trout. Fish...
Characteristics and identification of oxidative Pseudomonads isolated from diseased fish
G. L. Bullock, S. F. Snieszko, C. E. Dunbar
1965, Journal of General Microbiology (38) 1-7
Several characteristics of 20 strains of oxidative pseudomonads, all but one of which were isolated from freshwater fish, were determined. All strains oxidized glucose and gluconate, produced NH3 from 1 % peptone, grew at 6, 12, 20 and 30° and produced cytochrome oxidase. Lipase was produced by 17 of the...
Length-weight relationship of northern pike, Esox lucius, from East Harbor, Ohio
Edward H. Brown Jr., Clarence F. Clark
1965, Transactions of the American Fisheries Society (94) 404-405
The northern pike is one of Ohio's largest game fish but is well known to comparatively few anglers. Large numbers of the big fish spawn in the Ohio marshes adjacent to Lake Erie. Movements related to spawning reach a peak in late March or early April. Later the spawning population...
Ground-water pumpage and water-level changes in the Milwaukee-Waukesha area, Wisconsin, 1950-61
J. H. Green, R. D. Hutchinson
1965, Water Supply Paper 1809-I
Artesian water pressure in the deep sandstone aquifer continued to decline throughout most of the Milwaukee-Waukesha area, Wisconsin between 1950 and 1961. Areas of greatest water-level decline were in northeast Waukesha County and in northwest Milwaukee County. The chief cause of the decline was continued heavy pumpage. The major aquifers...
The water story in Central Iowa
F. R. Twenter, R. W. Coble
1965, Iowa Geological Survey Water Atlas 1
"The general welfare of the people of the state of Iowa requires that the water resources of the state be put to beneficial use to the fullest extent of which they are capable."  This can be achieved only by a knowledge and understanding of the water resources - their use,...
A method for estimating fall adult sex ratios from production and survival data
Howard M. Wight, Robert G. Heath, A. D. Geis
1965, Journal of Wildlife Management (29) 185-192
This paper presents a method of utilizing data relating to the production and survival of a bird population to estimate a basic fall adult sex ratio. This basic adult sex ratio is an average value derived from average production and survival rates. It is an estimate of the average sex...
A review of advances in the study of diseases of fish: 1954-1964
G. Post
1965, Progressive Fish-Culturist (27) 3-12
STUDY OF DISEASE IN ANIMALS, INCLUDING MAN, has progressed rapidly in the past decade. Looking back, we find amazing success in the study of man's diseases and possibly only a little less success in studies of diseases of domesticated homeothermic animals. We who are interested in the poikilothermic animals may feel...
Alkali content of alpine ultramafic rocks
W. Hamilton, W. Mountjoy
1965, Geochimica et Cosmochimica Acta (29) 661-671
The lower limit of abundance of sodium and potassium in ultramafic rocks is less than the threshold amount detectable by conventional analytical methods. By a dilutionaddition modification of the flame-spectrophotometric method, sodium and potassium have been determined in 40 specimens of alpine ultramafic...
Glass electrode determination of sodium in closed basin waters
A.H. Truesdell, B.F. Jones, A. S. Van Denburgh
1965, Geochimica et Cosmochimica Acta (29) 725-736
Because of its direct relation to total dissolved solids content, sodium concentration is the most useful single hydrochemical parameter of closed basin waters in the western United States. Therefore, it is advantageous to have a rapid method for sodium determination which could be...
Titanium dioxide in pyroclastic layers from volcanoes in the cascade range
G.K. Czamanske, S.C. Porter
1965, Science (150) 1022-1025
Rapid determinations of titanium dioxide have been made by x-ray emission techniques to evaluate the potentiality of using the TiO2 content of samples for checking field correlations and assisting in identification of pyroclastic units from Cascade volcanoes. Preliminary data suggest that the two most wide-spread units have characteristic ranges of...
Age and metamorphism of some massive sulfide deposits in Virginia, North Carolina and Tennessee
A.R. Kinkel Jr., H.H. Thomas, R. F. Marvin, F.G. Walthall
1965, Geochimica et Cosmochimica Acta (29) 717-724
Isotopic ages of vein and wall-rock samples have been determined on five massive sulflde deposits of the southern Appalachians. Vein mineral ages of about 1100 m.y. indicate that some ore bodies formed at least as early as the Grenville metamorphism, and probably soon after the formation of the enclosing gneiss...
Solution of rocks and refractory minerals by acids at high temperatures and pressures. Determination of silica after decomposition with hydrofluoric acid
I. May, J.J. Rowe
1965, Analytica Chimica Acta (33) 648-654
A modified Morey bomb was designed which contains a removable nichromecased 3.5-ml platinium crucible. This bomb is particularly useful for decompositions of refractory samples for micro- and semimicro-analysis. Temperatures of 400–450° and pressures estimated as great as 6000 p.s.i. were maintained in the bomb for...
Servo-amplifiers for ion current measurement in mass spectrometry
J. S. Stacey, R.D. Russell, F. Kollar
1965, Journal of Scientific Instruments (42) 390-394
A servo-voltmeter can provide a useful alternative to the d.c. amplifier or vibrating reed electrometer for the accurate measurement of mass spectrometer ion currents, and has some advantages which recommend its use in certain applications. A generalized analysis based on servomechanism theory is presented as an aid for understanding the...
Holocene submergence of the Eastern Shore of Virginia
W.S. Newman, G.A. Rusnak
1965, Science (148) 1464-1466
Radiocarbon ages of basal peats 4500 years old or younger and the thickness of salt-marsh peat in the lagoon east of Wachapreague, Virginia, are nearly the same as those of equivalent samples from New Jersey and Cape Cod. This suggests that these coasts have had similar submergence histories. Data obtained...
Eocene and miocene rocks off the northeastern coast of the United States
T. G. Gibson
1965, Deep-Sea Research and Oceanographic Abstracts (12)
A grab sample from a depth of 1675 m at a point south of Cape Cod contains early Eocene planktonic Foraminifera and is correlated with the Globorotalia rex zone of Trinidad. The assemblage indicates a depth comparable to that existing today. Regional relations suggest that the Cretaceous and Eocene deposits deepen...