Thoron-meso-tartaric acid system for determination of thorium
Mary H. Fletcher, F. S. Grimaldi, Lillie B. Jenkins
1957, Analytical Chemistry (29) 963-967
In the spectrophotometric determination of thorium with thoron, meso-tartaric acid is used as a masking reagent for zirconium. The effects of different experimental variables such as the concentrations of the reagents, time, and temperature, and the behavior of 35 ions which might be present in thorium ores are discussed. A...
The skin and scales
John Van Oosten
Margaret E. Brown, editor(s)
1957, Book chapter, The physiology of fishes
No abstract available....
Blue-sac disease investigations: Microbiology and laboratory induction
K. Wolf
1957, Progressive Fish-Culturist (19) 14-18
No abstract available....
Recent changes in the deep-water fish populations of Lake Michigan
James W. Moffett
1957, Transactions of the American Fisheries Society (86) 393-408
The deep-water fish fauna of Lake Michigan consisted of lake trout (Salvelinus namaycush), burbot (Lota lota maculosa), seven species of chubs or deep-water ciscoes (Leucichthys spp.), and the deep-water sculpin (Myoxocephalus quadricornis). Other species occupied the deep-water zone but were not typically part of the fauna. Lake trout, burbot, and a...
Ground water in the Crow Creek-Sand Lake area, Brown and Marshall Counties, South Dakota
F. C. Koopman
1957, Water Supply Paper 1425
The Crow Creek Sand Lake area is in the northeastern part of South Dakota and consists of flat to gently rolling land. It is roughly 25 miles square and is bounded on the west by the James River, on the north by the North Dakota State line, and on the...
Gyrodactylus eucaliae n. sp. (Trematoda: Monogenea) from the brook stickleback, Eucalia inconstans
F.M. Ikezaki, G. L. Hoffman
1957, Journal of Parasitology (43) 451-455
No abstract available....
Reduction of quinquevalent vanadium solutions by wood and lignite
A. M. Pommer
1957, Geochimica et Cosmochimica Acta (13) 20-27
To determine whether reduced vanadium ores could have been deposited by reduction from supergene quinquevalent vanadium solutions, the reducing capacity of fresh wood, wood degraded by long burial, and lignite was determined experimentally at temperatures of 120° and 150° in closed containers. A precipitate obtained by reduction of quinquevalent vanadium...
Determination of yttrium, lanthanum, cerium, neodymium, and ytterbium in test samples granite G-1 and diabase W-1 by a combined chemical-spectrochemical technique
S. Berman
1957, Geochimica et Cosmochimica Acta (12) 271-272
No abstract available....
Modified determination of radium in water
F. B. Barker, L. L. Thatcher
1957, Analytical Chemistry (29) 1573-1575
The proposed method embodies a barium sulfate carrier precipitation, filtration through molecular filter membranes, and collection of activity after prescribed aging period. The method is sufficiently accurate and precise to indicate the potability of water and for use in general studies of radium in chemical hydrology. Amounts of radium as...
X-ray spectrographic determination of cesium and rubidium
J. M. Axelrod, I. Adler
1957, Analytical Chemistry (29) 1280-1281
An x-ray spectrographic method for the determination of rubidium and cesium was developed, using the internal-standard method and a four-channel flat-crystal spectrograph. The sensitivity is within 0.1% for cesia and 0.02% for rubidia; the precision is within 10% of the amount present. Results agree well with those obtained by flame...
Quantitative radiochemical methods for determination of the sources of natural radioactivity
J. N. Rosholt
1957, Analytical Chemistry (29) 1398-1408
Study of the state of equilibrium of any natural radioactive source requires determination of several key nuclides or groups of nuclides to find their contribution to the total amount of radioactivity. Alpha activity measured by scintillation counting is used for determination of protactinium-231, thorium-232, thorium-230, and radium-226. The chemical procedures...
Selective precipitation of thorium iodate from a tartaric acid-hydrogen peroxide medium application to rapid spectrophotometric determination of thorium in Silicate Rocks and in Ores
F. S. Grimaldi
1957, Analytical Chemistry (29) 848-851
This paper presents a selective iodate separation of thorium from nitric acid medium containing d-tartaric acid and hydrogen peroxide. The catalytic decomposition of hydrogen peroxide is prevented by the use of 8quinolinol. A few micrograms of thorium are separated sufficiently clean from 30 mg. of such oxides as cerium, zirconium,...
Modified zirconium-Eriochrome Cyanine R determination of fluoride
L. L. Thatcher
1957, Analytical Chemistry (29) 1709-1712
The Eriochrome Cyanine R method for determining fluoride in natural water has been modified to provide a single, stable reagent solution, eliminate interference from oxidizing agents, extend the concentration range to 3 p.p.m., and extend the phosphate tolerance. Temperature effect was minimized; sulfate error was eliminated by precipitation. The procedure...
Determination of the susceptibility of Aeromonas salmonicida to sulfonamides and antibiotics, with summary report on the treatment and prevention of furunculosis
S. F. Snieszko, G. L. Bullock
1957, Progressive Fish-Culturist (19) 99-107
No abstract available....
Use of antibiotics in the diet of salmonid fishes
S. F. Snieszko
1957, Progressive Fish-Culturist (19) 81-84
No abstract available....
Infectious pancreatic necrosis in trout
S. F. Snieszko, E. M. Wood, W. T. Yasutake
1957, Archives of Pathology (63) 229-233
No abstract available....
Treatment of sulfonamide resistant furunculosis in trout and determination of drug sensitivity
S. F. Snieszko, G. L. Bullock
1957, Fishery Bulletin (125) 555-564
Effects on wildlife of aerial applications of strobane, DDT, and BHC to tidal marshes in Delaware
J.L. George, R.F. Darsie, P. F. Springer
1957, Journal of Wildlife Management (21) 42-53
No abstract available. ...
Disease resistant and susceptible populations of brook trout (Salvelinus fontinalis)
S. F. Snieszko
1957, Book chapter, Special Scientific Report - Fisheries 208
No abstract available at this time...
On the postglacial history of the Devils Lake Region, North Dakota
Saul Aronow
1957, The Journal of Geology (65) 410-427
Devils and Stump lakes in eastern North Dakota have been diminishing in area more or less continuously since the land around them was settled in the 1880's. Desiccations similar to the current one have occurred at least once and possibly two or more times in the past and are indicated...
The control of the upstream movement of fish with pulsated direct current
Alberton L. McLain
1957, Transactions of the American Fisheries Society (86) 269-284
Alternating-current electromechanical devices installed in the mouths of streams have proved effective in stopping the spawning migrations of the parasitic sea lamprey (Petromyzon marinus) which has seriously damaged Great Lakes fisheries. In a few streams, excessive mortality has occurred to other fish at the alternating-current barriers. A direct-current unit was...
Limnological surveys of the Great Lakes--early and recent
Stanford H. Smith
1957, Transactions of the American Fisheries Society (86) 409-418
Early explorations on the Great Lakes were concerned largely with things easily collected or observed—common organisms, water levels, surface temperatures … Even when more scientific studies were undertaken, they were at first scattered and small-scale. Effective surveys became possible only through inter-agency cooperation which permits a pooling of facilities, staff,...
Evolution and distribution of the coregonids
Stanford H. Smith
1957, Journal of the Fisheries Research Board of Canada (14) 599-604
Increased knowledge of the morphological and physiological plasticity of the coregonids has minimized the significance of conflicting morphological data that have retarded the development of an evolutionary theory. Of the four phyletic lines recognized through worldwide studies,Coregonus originated in the lake and stream area of northwest Eurasia, Stenodus andProsopium evolved in the rivers of...
Aeromagnetic map, of the Wawayanda and part of the Pine Island quadrangles, Sussex and Passaic Counties, New Jersey, and Orange County, New York
John R. Henderson Jr., Natalie S. Tyson
1957, Geophysical Investigations Map 159
No abstract available....
Reconnaissance study of the Marsh anticline, northern Alaska
Robert Hamilton Morris
1957, Open-File Report 57-76
No abstract available....
