The determination of nanogram amounts of Chromium in urine by x-ray fluorescence spectroscopy
K. Beyermann, H. J. Rose Jr., R.P. Christian
1969, Analytica Chimica Acta (45) 51-55
Nanogram amounts of chromium can be extracted as oxinate into chloform. By treatment of the chloroform layer 3 M hydrochloric acid, oxinates of other elements and excess of reagent are removed, leaving a chloroform solution of the chromium chelate only. This solution is concentrated and transferred to...
A paleomagnetic study of secular variation in New Zealand
A. Cox
1969, Earth and Planetary Science Letters (6) 257-267
Ancient secular variation in New Zealand was determined from paleomagnetic measurements on 22 volcanic formations with ages of less than 0.68 m.y. The angular standard deviation from the field of an axial dipole is 13.2° with 95% confidence limits between 10.9° and 16.7°....
Dilemma posed by uranium-series dates on archaeologically significant bones from Valsequillo, Puebla, Mexico
Barney J. Szabo, H.E. Malde, C. Irwin-Williams
1969, Earth and Planetary Science Letters (6) 237-244
In an attempt to date stone artifacts of Early Man excavated from several sites at the Valsequillo Reservoir, a few kilometers south of Puebla, Mexico, Szabo applied the uranium-series method on bone samples known to be either from the same geologic formation as...
Pecoraite, Ni6Si4O10(OH)8, nickel analog of clinochrysotile, formed in the wolf creek meteorite
G. T. Faust, J. J. Fahey, B. Mason, E.J. Dwornik
1969, Science (165) 59-60
Pecoraite is a new phase in the natural system H2O-NiO-MgO- SiO2, the nickel analog of clinochrysotile. It occurs in cracks in the Wolf Creek meteorite in Australia where it was formed under hydrothermal conditions. Particles of pecoraite are very small curved plates which have begun to coil; some have achieved...
Water in Kentucky
Robert A. Krieger, Robert Vittum Cushman, N.O. Thomas
1969, Kentucky Geological Survey Special Publication 16-10
No abstract available....
Nesting of the upland plover on the Missouri Coteau
K.F. Higgins, Harold F. Duebbert, R.B. Oetting
1969, Prairie Naturalist (1) 45-48
Abstract has not been submitted...
Aspergillosis in wintering mallards
G.L. Pearson
1969, Bulletin of the Wildlife Disease Association (5) 404-405
No abstract available....
Catfish spines from archeological sites in Texas
C. L. Douglas
1969, Bulletin of Texas Archeology
Rapid method for filtration of marsh waters
V. A. Adomaitis, J.A. Shoesmith
1969, Prairie Naturalist (1) 31
No abstract available....
Tadpole edema virus: pathogenesis and growth studies and additional sites of virus infected bullfrog tadpoles
K. Wolf, G. L. Bullock, C. E. Dunbar, M. C. Quimby
M. Mizell, editor(s)
1969, Book chapter, Biology of amphibian tumors
No abstract available at this time...
Analysis of hairs in Lovelock Cave corprolites, Part I. Archaeological and palebiological investigations in Lovelock Cave, Nevada, by Lewis Napton
C. L. Douglas
1969, Kroeber Anthropological Society Papers, Special Publication (2) 1-98
Do you really know your geese?
G.A. Sherwood
1969, North Dakota Outdoors (32) 8-13
Abstract has not been submitted...
Build-up of grit in three pochard species in Manitoba
James C. Bartonek
1969, The Wilson Bulletin (81) 96-97
Abstract has not been submitted...
Preliminary determinations of hydrobiological and chemical conditions in the vicinity of the proposed jetport and other airports in south Florida: Progress report
Benjamin F. McPherson
1969, Open-File Report 69-162
No abstract available....
Geologic history of the Colorado River: Chapter C in The Colorado River region and John Wesley Powell (Professional Paper 669)
Charles B. Hunt
1969, Professional Paper 669-C
John Wesley Powell clearly recognized that the spectacular features of the Colorado River - its many grand canyons - were dependent upon the structural history of the mountainous barriers crossed by the river. He conceived of three different historical relationships between rivers and structural features: (1) Newly uplifted land surfaces...
Environmental impact of the Big Cypress Swamp jetport
U.S. Department of the Interior
1969, Report
Development of the proposed jetport and its attendant facilities will lead to land drainage and development for agriculture, industry, housing, transportation, and services in the Big Cypress Swamp which will inexorably destroy the south Florida ecosystem and this the Everglades National Park....
Environmental impact of oil development in northern Alaska
Luna Bergere Leopold
1969, Report
It is reported that in the spring of 1969 a high official of one of the oil companies was flying over the area of oil development in the vicinity of Prudhoe Bay. He is quoted as saying "If the American people could see what we are doing to their land...
Blueschist-facies metamorphism related to regional thrust faulting
M.C. Blake Jr., W. P. Irwin, R. G. Coleman
1969, Tectonophysics (8) 237-246
Rocks of the blueschist (glaucophane schist) facies occur throughout the world in narrow tectonic belts associated with ultramafic rocks. In the Coast Range province of California, blueschist rocks are devloped in the eugeosynclinal Franciscan Formation of Late Mesozoic age. The blueschist rocks form a narrow belt for more than 800...
Some triple-filament lead isotope ratio measurements and an absolute growth curve for single-stage leads
J. S. Stacey, M.E. Delevaux, T.J. Ulrych
1969, Earth and Planetary Science Letters (6) 15-25
Triple-filament analyses of three standard lead samples are used to calibrate a mass spectrometer in an absolute sense. The bias we measure is 0.0155 percent per mass unit, and the precision (for 95% confidence limits) is ±0.13% or less for all ratios relative to204Pb. Although its precision is not quite...
Lymphosarcoma of possible thymic origin in salmonid fishes
C. E. Dunbar
1969, National Cancer Institute Monograph 31
No abstract available at this time...
Voidance time for 23 species of fish
T.H. Lane, H.M. Jackson
1969, Investigations in Fish Control 33
Abstract not submitted to date...
Blue-sac disease of fish
K. Wolf
1969, Fish Disease Leaflet 15
No abstract available at this time...
Oxytetracycline in fish culture : a review
R. L. Herman
1969, Technical Paper 31
No abstract available at this time...
A purple-colored 1M mica clay from Silverton, Colorado
Pei-Lin Tien
1969, Clays and Clay Minerals (17) 245-249
A purple-colored clay of 1M mica polymorph in association with lead-zinc ore was collected from an abandoned mine dump near Silverton, Colorado. Electron micrographs show that the crystallites of the clay are less than 2µ in size and have poorly developed hexagonal outlines. Differential thermal and i.r. absorption analyses indicate...
Extraction of vanadium into isobutyl methyl ketone
Hans J. Crump-Wiesner, W.C. Purdy
1969, Talanta (16) 124-129
Because of its advantages in atomic-absorption spectroscopy, isobutyl methyl ketone was chosen as organic solvent for an extraction study on vanadium. Of eight chelating agents which were evaluated for completeness of extraction, ease of use, working pH range, and freedom from interference, cupferron was judged best.<div...
