Methylation patterns of aquatic humic substances determined by13C NMR spectroscopy
Kevin A. Thorn, C. Steelink, Robert L. Wershaw
1987, Organic Geochemistry (11) 123-137
13C NMR spectroscopy is used to examine the hydroxyl group functionality of a series of humic and fulvic acids from different aquatic environments. Samples first are methylated with13C-labeled diazomethane. The NMR spectra of the diazomethylated samples allow one to distinguish between methyl esters of carboxylic acids, methyl ethers of phenolic...
Industrial halide wastes cause acute mortality of snow geese in Oklahoma
J. K. Andreasen, Richard K. Stroud
1987, Environmental Toxicology and Chemistry (6) 291-293
An examination of 97 dead migratory waterfowl collected at an industrial facility showed that the birds had had severe gastric and intestinal hemorrhaging. Water samples taken at on-site waste lagoons contained 6,750 mg/L fluoride, 4,500 mg/L bromine and 1,500 mg/L boron. Brain and liver tissues contained high levels of fluoride,...
Effect of urbanization on the water resources of eastern Chester County, Pennsylvania
R. A. Sloto
1987, Water-Resources Investigations Report 87-4098
The effects of human activity on the water resources of a 207-square-mile area of eastern Chester County was evaluated. The most serious consequence of urbanization is the contamination of ground water by volatile organic compounds, which were detected in 39 percent of the 70 wells sampled. As many as nine...
Unsaturated flow in a centrifugal field: Measurement of hydraulic conductivity and testing of Darcy's Law
John R. Nimmo, J. Rubin, D.P. Hammermeister
1987, Water Resources Research (23) 124-134
A method has been developed to establish steady state flow of water in an unsaturated soil sample spinning in a centrifuge. Theoretical analysis predicts moisture conditions in the sample that depend strongly on soil type and certain operating parameters. For Oakley sand, measurements of flux, water content, and matric potential...
You asked for it! Review of a new fishery chemicals handbook
C. Collins
1987, Aquaculture Magazine (13) 52-54
The Global Importance of Type C Botulism in Wild Birds
W. I. Jensen, J.I. Price
M.W. Eklund, V.R. Dowell, editor(s)
1987, Book, Avian Botulism: An International Perspective
Apparatus to simulate rapid Ph changes in water supplies
J. T. Fuss
1987, NTIS Tech Notes (0204) 1
You asked for it! Sodium bicarbonate: properties and reports of its use in fish production
B.R. Griffin, C.M. Collins
1987, Aquaculture Magazine (13) 53-54
You asked for it! Columnaris disease: recent advances in research
B.R. Griffin
1987, Aquaculture Magazine (13) 48-50
Acid rain stimulation of Lake Michigan phytoplankton growth
Bruce A. Manny, G.L. Fahnenstiel, W.S. Gardner
1987, Journal of Great Lakes Research (13) 218-223
Three laboratory experiments demonstrated that additions of rainwater to epilimnetic lake water collected in southeastern Lake Michigan stimulated chlorophyll a production more than did additions of reagent-grade water during incubations of 12 to 20 d. Chlorophyll a production did not begin until 3–5 d after the rain and lake water were mixed. The stimulation...
You asked for it! Using liquid oxygen for increasing channel catfish production in concrete raceways
C. Collins
1987, Aquaculture Magazine (13) 50-52
Predicting Great Lakes fish yields: tools and constraints
C.A. Lewis, D.H. Schupp, W.W. Taylor, J.J. Collins, Richard W. Hatch
1987, Canadian Journal of Fisheries and Aquatic Sciences (44) 411-416
Prediction of yield is a critical component of fisheries management. The development of sound yield prediction methodology and the application of the results of yield prediction are central to the evolution of strategies to achieve stated goals for Great Lakes fisheries and to the measurement of progress toward those goals....
Compositional evidence regarding the origins of rims on Semarkona chondrules
J. N. Grossman, J. T. Wasson
1987, Geochimica et Cosmochimica Acta (51) 3003-3011
The compositions of the interiors and abraded surfaces of 7 chondrules from Semarkona (LL3.0) were measured by neutron activation analysis. For nonvolatile elements, the lithophile and siderophile element abundance patterns in the surfaces are generally similar to those in the corresponding interiors. Siderophile and chalcophile concentrations are much higher in...
Molecular weight of aquatic fulvic acids by vapor pressure osmometry
G. R. Aiken, Ronald L. Malcolm
1987, Geochimica et Cosmochimica Acta (51) 2177-2184
The molecular weights of aquatic fulvic acids extracted from five rivers were determined by vapor pressure osmometry with water and tetrahydrofuran as solvents. The values obtained ranged from 500 to 950 dallons, indicating that the molecular weights of aquatic fulvic acids are not as great as has been suggested in...
Effects of feeding and fasting on wolf blood and urine characteristics
Glenn D. DelGiudice, Ulysses S. Seal, L. David Mech
1987, Journal of Wildlife Management (51) 1-10
Feeding and fasting trials were conducted with 2 groups (A and B) of 4 gray wolves (Canis lupus) each during January 1980. The groups were fed for 9 days and fasted for 10 days in a cross-over design. Blood and urine samples and weight data were collected every 2-3 days...
Use of urine in snow to indicate condition of wolves
L. David Mech, Ulysses S. Seal, Glenn D. DelGiudice
1987, Journal of Wildlife Management (51) 10-13
Urine deposited in snow by wild gray wolves (Canis lupus) and by fed and fasted captive wolves was analyzed for urea nitrogen, calcium, sodium, potassium, and creatinine. Ratios of the elements with creatinine were considerably higher for fed than for fasted animals, and ratios for fed wolves compared favorably with...
Magmatic history of Red Sea rifting: Perspective from the central Saudi Arabian coastal plain
J.S. Pallister
1987, Geological Society of America Bulletin (98) 400-417
A newly recognized Tertiary dike complex and comagmatic volcanic rocks exposed on the central Saudi Arabian coastal plain record early stages of magmatism related to Red Sea rifting. Intrusive and stratigraphic relationships and new potassium-argon dating indicate episodic magmatism from about 30 Ma to the present. Additional stratigraphic and radiometric...
Maestrichtian benthic foraminifers from Ocean Point, North Slope, Alaska ( USA).
K. McDougall
1987, Journal of Foraminiferal Research (17) 344-366
Previous studies of fauna and flora from Ocean Point, Alaska, have suggested ages ranging from Campanian to early Eocene and that these assemblages are either highly endemic or commonplace. I demonstrate that the moderately abundant benthic foraminifers constitute early Maestrichtian boreal assemblages common to Canada and northern Europe. Paleoenvironmental analysis...
Characteristics of hydrolysis of the complex Na2SnF6 in hydrothermal solutions-An experimental study
Y. Wang, C. I-Ming
1987, Chinese Journal of Geochemistry (6) 372-382
Characteristics of hydrolysis of the complex Na2SnF6, which is used as the starting material, in hydrothermal solutions have been studied at 200-602??C and 1 kbar. Experimental results show that intense hydrolysis of Na2SnF6 occurs at high temperatures and that with the rise of temperature the hydrolysis will become more intense....
Petrogenesis of gabbronorite at Yakobi and northwest Chichagof Islands, Alaska
G. R. Himmelberg, R. A. Loney, P.I. Nabelek
1987, Geological Society of America Bulletin (98) 265-279
On Yakobi Island and at Mirror Harbor on the northwest coast of Chichagof Island, gabbronorite occurs as irregular bodies, as much as 5.5 km in maximum dimension, mostly within a 40 to 43 m.y. composite pluton consisting largely of tonalite. The gab-bronorites are the host rocks for a magmatic nickel-copper...
“Magnifying-Glass” Azimuthal Map Projections
John P. Snyder
1987, American Cartographer (14) 61-68
For maps focusing on a region of interest, but including surrounding areas to provide a setting, new azimuthal projections have been developed with a 'magnifying-glass' effect. On two such projections, inside a circle bounding the region of interest is a standard Azimuthal Equidistant or Lambert Azimuthal Equal-Area projection. Between this...
Stratification of a cityscape using census and land use variables for inventory of building materials
G.H. Rosenfield, K. Fitzpatrick-Lins, T. L. Johnson
1987, The Annals of Regional Science (21) 22-33
A cityscape (or any landscape) can be stratified into environmental units using multiple variables of information. For the purposes of sampling building materials, census and land use variables were used to identify similar strata. In the Metropolitan Statistical Area of a cityscape, the census tract is the smallest unit for...
Diffusivity of a glacial-outwash aquifer by the floodwave- response technique
R.J. Reynolds
1987, Groundwater (25) 290-299
Aquifer diffusivity (transmissivity divided by storage coefficient) was calculated for three sites in a glacial-autwash valley aquifer near Cortland, New York from water-level fluctuations induced by rises in stream stage. The observed response data were analyzed through use of a one-dimensional floodwave-response model to calculate the theoretical head response in...
Zircon Lu-Hf systematics and the evolution of the Archean crust in the southern Superior Province, Canada
P. E. Smith, M. Tatsumoto, R.M. Farquhar
1987, Contributions to Mineralogy and Petrology (97) 93-104
A combined Lu-Hf and U-Th-Pb isotopic study was made of 25 zircons and 2 whole rocks from the late Archean crust (2,888-2,668 Ma) in the southern Superior Province, Canada. The relative abundances of U, Th, Lu and Hf in zircons from the low grade Michipicoten and Gamitagama greenstone belts show...
Phase relations in the system NaCl-KCl-H2O. III: Solubilities of halite in vapor-saturated liquids above 445°C and redetermination of phase equilibrium properties in the system NaCl-H2O to 1000°C and 1500 bars
I.-M. Chou
1987, Geochimica et Cosmochimica Acta (51) 1965-1975
Halite solubilities along the three-phase curve in the binary system NaCl-H2O determined by DTA experiment can be represented by the equation Wt.% NaCl (±0.2) = 19.39 − 0.0364t + 3.553 × 10−4T2 − 2.298 × 10−7T3, where 447≦ T ≦ 800°C. Even though these halite solubilities are up to ~7 wt.% higher than...
