Werner Juhle
1955, Open-File Report 55-77
No abstract available....
Search Results
184785 results.
Alternate formats: RIS file of the first 3000 search results | Download all results as CSV | TSV | Excel | RSS feed based on this search | JSON version of this page of results
Page 6970, results 174226 - 174250
Publication Extents
Not all publications have extents, not all extents are completely accurateH. Levine, J.J. Rowe, F. S. Grimaldi
1955, Analytical Chemistry (27) 258-262
Microgram amounts of phosphate are usually determined by the molybdenum blue reaction, but this reaction is not specific for phosphorus. The research established the range of conditions under which phosphate, arsenate, silicate, and germanate give the molybdenum blue reaction for differentiating these elements, and developed a method for the determination...
M. K. Carron, D. L. Skinner, R.E. Stevens
1955, Analytical Chemistry (27) 1058-1061
The conventional oxalate method for precipitating thorium and the rare earth elements in acid solution exhibits definite solubilities of these elements. The present work was undertaken to establish conditions overcoming these solubilities and to find optimum conditions for precipitating thorium and the rare earth elements as hydroxides and sebacates. The...
F. S. Grimaldi, B. Ingram, F. Cuttitta
1955, Analytical Chemistry (27) 918-921
Gelatinous silica and aluminum ions retard the distillation of fluorine in the Willard and Winter distillation method. A generally applicable, simple method for the determination of fluorine in rocks containing aluminum or silicon or both as major constituents was desired. In the procedure developed, the sample is fused with a...
Leonard Shapiro, W. W. Brannock
1955, Analytical Chemistry (27) 560-562
A rapid and simple method for the determination of total water in silicate rocks has been developed by modifying the Penfield procedure. In this method, the time required for a single determination has been reduced to less than 10 minutes. Comparison of the data obtained by this modification and the...
M. E. Coller, R. K. Leininger
1955, Analytical Chemistry (27) 949-951
Total sulfur has been determined in common sedimentary rocks by a combustion method. Sulfur contents range from 0.001 to 5.0%. Experiments show that the combustion method can be used in analyzing sedimentary rocks in which sulfur is present as sulfide, sulfate, or both. Pulverized samples from 0.100 to 0.500 gram...
Paul W. Richards
1955, Bulletin 1026
No abstract available....
Paul C. Benedict, Maurice L. Albertson, Donald Q. Matejka
1955, Transactions of the American Society of Civil Engineers (120) 457-484
The results of significant model tests in a glass-walled flume and prototype tests of a turbulence flume are presented. The velocity of flow and the transportation of the total sediment load in suspension were observed under varying conditions of flow. Also noted was the resistance to flow caused by vertical...
Ralph Hile
1955, Progressive Fish-Culturist (17) 44-44
No abstract available....
G. L. Hoffman
1955, Journal of Parasitology (41) 327
No abstract available....
Vernon C. Applegate, James W. Moffett
1955, Scientific American (192) 36-41
Replicate samples of dehydrated :alfalfa-leaf meal were assayed for carotene content by four different analytical procedures. The results obtained by the modified A.O.A.C.method were significantly higher than those obtained by the other procedures....
Paul H. Eschmeyer, Reeve M. Bailey
1955, Transactions of the American Fisheries Society (84) 161-199
Bottom trawling by the U. S. Fish and Wildlife Service motor vessel Cisco in Lake Superior in 1952–1953 revealed a large population of a tiny whitefish, Coregonus (Prosopium) coulteri, which has been reported previously only from northwestern North America. The hiatus in range, from Lake Superior to the Columbia...
Richard T. Sniegocki, F. H. Rainwater
1955, Water Supply Paper 1327
No abstract available....
Richard L. Pycha, Lloyd L. Smith Jr.
1955, Transactions of the American Fisheries Society (84) 249-260
The early life history of the yellow perch, an important commercial species in the Red Lakes, Minnesota, has been studied with special reference to length at scale formation, growth rate during first season of life, and food habits as they relate to growth and survival. Scales are fully imbricated in...
Paul H. Eschmeyer
1955, Transactions of the American Fisheries Society (84) 47-74
The principal spawning grounds of lake trout (Salvelinus namaycush namaycush) in United States waters of southern Lake Superior are on rocky shoals at depths of less than 20 fathoms. Most spawning occurs in October and early November. Of the mature fish collected on or near the spawning grounds, 60...
James W. Moffett
1955, Conference Paper, The Great Lakes and Michigan
No abstract available....
A.R. Leonard, G.T. Cardwell
1955, Open-File Report 55-95
No abstract available....
C. E. Knox, T. J. Nordenson
1955, Hydrologic Atlas 7
No abstract available....
I. Adler, J. M. Axelrod
1955, Analytical Chemistry (27) 1002-1003
A fluorescent x-ray spectrographic method for the determination of thoria in rock samples uses thallium as an internal standard. Measurements are made with a two-channel spectrometer equipped with quartz (d = 1.817 A.) analyzing crystals. Particle-size effects are minimized by grinding the sample components with a mixture of silicon carbide...
I. Adler, J. M. Axelrod
1955, Spectrochimica Acta (7) 91-99
The use of internal standards in the analysis of ores and minerals of widely-varying matrix by means of fluorescent X-ray spectroscopy is frequently the most practical approach. Internal standards correct for absorption and enhancement effects except when an absorption edge falls between the comparison lines or a very strong emission...
Irwin Remson, M.H. Halstead
1955, Open-File Report 55-149
The construction, calibration and use of an electrical "slide rule" for computing theoretical drawdowns of ground-water levels are described. The instrument facilitates the computation of drawdowns under given conditions of discharge or recharge by means of the Theis nonequilibrium equation. It is simple to construct and use and can be...
Leonard Shapiro, W. W. Brannock
1955, Analytical Chemistry (27) 725-728
Rapid nonsubjective methods have been developed for the determination of calcium and magnesium in carbonate rocks. From a single solution of the sample, calcium is titrated directly, and magnesium is titrated after a rapid removal of R2O3 and precipitation of calcium as the tungstate. A concentrated and a dilute solution...
S. F. Snieszko, P. J. Griffin
1955, Progressive Fish-Culturist (17) 3-13
No abstract available....
H. Bloom, P.R. Barnett
1955, Analytical Chemistry (27) 1037-1038
[No abstract available]...
Vernon C. Applegate, James W. Moffett
Scientific American, editor(s)
1955, Book chapter, First book of animals
No abstract available....