A distinction between bedrock and unconsolidated deposits on 3-5u infrared imagery of the Yellowstone rhyolite plateau
Robert L. Christiansen
1968, Open-File Report 68-34
Infrared imagery covering most of Yellowstone National Park was obtained in August 1966, by H. R. B. Singer Company, using the Reconofax IV system in an aircraft flying at about 20,000 feet. This imagery has been examined in order to evaluate the geologic information it contains in relation to a...
Geological Survey research 1968: Chapter C
Water Resources Division, U.S. Geological Survey
1968, Professional Paper 600-C
No abstract available....
The oxidation of drugs by fishes
Donald R. Buhler, Mary E. Rasmusson
1968, Comparative Biochemistry and Physiology, Part A: Molecular & Integrative Physiology (25) 223-239
1. Fish liver microsomal systems have been found to catalyze the hydroxylation of aniline and acetanilide, the N-demethylation of aminopyrine and the O-dealkylation of phenacetin.2. These systems are similar to the corresponding mammalian enzymes and they may be considered to be mixed function oxidase since they require NADPH and...
Some enzymatic properties of brain Acetylcholinesterase from bluegill and channel catfish
James W. Hogan, Charles O. Knowles
1968, Journal of the Fisheries Research Board of Canada (25) 615-623
Using a manometric technique an acetylcholinesterase (EC 3.1.1.7, acetylcholine acetyl-hydrolase) was demonstrated in brain tissue from the bluegill, Lepomis macrochirus Rafinesque, and the channel catfish, Ictalurus punctatus (Walbaum). The activities were 19 and 37 μmoles acetylcholine hydrolyzed/milligram protein per hour for the bluegill and channel catfish enzymes, respectively. The optimum substrate concentration for the hydrolysis...
Seattle Metro's Duwamish estuary water quality program
Charles V. Gibbs, Gary W. Isaac
1968, Journal of the Water Pollution Control Federation (40) 385-394
No abstract available....
Role of intestinal microflora in the degradation of DDT by rainbow trout (Salmo gairdneri)
Gary Wedemeyer
1968, Life Sciences (7) 219-233
Though liver homogenates show apparent microsomal enzyme DDT-dehydrochlorinase activity, in the intact fish the intestinal microflora play a major role in DDT detoxication. Since the presence of this microflora in fish depends on the recent intake of food (12), the rate of detoxication and hence the toxicity of ingested DDT...
Some effects of mirex on two warm-water fishes
Charles C. Van Valin, Austin K. Andrews, Lafayette L. Eller
1968, Transactions of the American Fisheries Society (97) 185-196
The effects of mirex on two species of warm-water fishes were studied in three experiments in which the fish were exposed either by feeding a mirex-treated diet, or by treating the holding ponds with a mirex formulation. Bluegills were used in the feeding experiment, where three different levels of mirex...
The relative toxicities of several pesticides to naiads of three species of stoneflies
Herman O. Sanders, Oliver B. Cope
1968, Limnology and Oceanography (13) 112-117
Static bioassays were conducted to determine the relative acute toxicities of some insecticides, herbicides, fungicides, a defoliant, and a molluscicide to the naiads of three species of stonef!y, Pteronarcys califomica, Pteronarcella badia, and Claassenia sabulosa. Toxic effects were measured by determination of median lethal concn (Lcoo) for 24-, 48-, and...
Degradation of organophosphates by fish liver phosphatases
James W. Hogan, Charles O. Knowles
1968, Journal of the Fisheries Research Board of Canada (25) 1571-1579
Liver homogenates of bluegill, Lepomis macrochirus Rafinesque, and channel catfish, Ictalurus punctatus (Walbaum), were shown by a manometric technique to contain soluble enzymes capable of degrading diisopropyl phosphorofluoridate (DFP) and 2,2-dichlorovinyl dimethyl phosphate (dichlorvos). Hydrolysis of the compounds was greatest in the presence of the manganic ion. Tentative identification of certain of the hydrolysis...
Premature citations of zoological nomina
G.G. Simpson, I. G. Sohn
1968, Science (161) 75-76
No abstract available....
Design and construction of a dual recharge system at Minot, North Dakota
Wayne A. Pettyjohn
1968, Groundwater (6) 4-8
In 1965, a ground-water recharge facility was constructed and placed in operation to forestall an impending water shortage at Minot, North Dakota. The facility is unique in that the rate of recharge to a buried sand and gravel aquifer is augmented by perforating an overlying bed of clay using hydraulic...
Freshwater fish diseases caused by bacteria belonging to the genera Aeromonas and Pseudomonas
S. F. Snieszko, G. L. Bullock
1968, Fish Disease Leaflet 11
No abstract available at this time...
Parasites of freshwater fishes IV, Miscellaneous, The anchor worm (Lernaea cyprinacea) and related species
R.E. Putz, J.T. Bowen
1968, Fish Disease Leaflet 12
No abstract available at this time...
Lymphocystis disease of fish
K. Wolf
1968, Fish Disease Leaflet 13
No abstract available at this time...
Lamprey control and research in the United States
Bernard R. Smith
1968, Annual Report 1967
No abstract available....
Premature citations and zoological nomenclature
I. G. Sohn
1968, Science (159) 441-442
No abstract available....
Phytoplankton and related water-quality conditions in an enriched estuary
Eugene Brummer Welch
1968, Journal of the Water Pollution Control Federation (40) 1711-1727
No abstract available....
Hydrocarbons and other organic fractions in recent tidal-flat and estuarine sediments, Northeastern Gulf of Mexico
V.E. Swanson, J. G. Palacas, A.H. Love, T.G. Ging Jr., P.M. Gerrild
1968, Conference Paper, Preprints
[No abstract available]...
Activity product constant of cryolite at 25°C and one atmosphere using selective-ion electrodes to estimate sodium and fluoride activities
C. E. Roberson, J.D. Hem
1968, Geochimica et Cosmochimica Acta (32) 1343-1351
The activity product constant of cryolite (Na3AlF6) at 25°C and 1 atm total pressure was calculated from data for solutions from which synthetic cryolite or mixtures of cryolite and a solid apparently related to ralstonite had precipitated. The activities of fluoride and of sodium were estimated using specific ion...
Basalts dredged from the Amirante ridge, western Indian ocean
R.L. Fisher, C.G. Engel, T.W.C. Hilde
1968, Deep-Sea Research and Oceanographic Abstracts (15) 521-534
Oceanic tholeiitic basalts were dredged from 2500 to 3000 m depth on each flank of the Amirante Ridge, 1200 km southeast of Somalia in the western Indian Ocean, by R.V. Argo in 1964. One sample, probably shed from a flow or dike in basement beneath the coralline cap, gave a wholerock...
Fluorometric determination of gold in rocks with rhodamine B
John Marinenko, Irving May
1968, Analytical Chemistry (40) 1137-1139
No abstract available....
Geology, hydrology, and quality of water in the Hanford-Visalia area, San Joaquin Valley, California
Mark G. Croft, G. V. Gordon
1968, Open-File Report 68-67
No abstract available....
Variation of Nb-Ta, Zr-Hf, Th-U and K-Cs in two diabase-granophyre suites
D. Gottfried, L. P. Greenland, E.Y. Campbell
1968, Geochimica et Cosmochimica Acta (32) 925-947
Concentrations of Nb, Ta, Zr, Hf, Th, U and Cs have been determined in samples of igneous rocks representing the diabase-granophyre suites from Dillsburg, Pennsylvania, and Great Lake, Tasmania.Niobium and tantalum have a three to fourfold increase with differentiation in each of the suites. The chilled margin of the Great...
Structural charge site influence on the interlayer hydration of expandable three-sheet clay minerals
Raymond L. Kerns Jr., Charles J. Mankin
1968, Clays and Clay Minerals (16) 73-81
Previous investigations have demonstrated the influences of interlayer cation composition, relative humidity, temperature, and magnitude of interlayer surface charge on the interlayer hydration of montmorillonites and vermiculites. It has been suggested that the sites of layer charge deficiencies may also have an influence upon the amount of hydration that can...
Paleomagnetism and the compositions of highly-oxidised iron-titanium oxides in basalts
P.J. Smith
1968, Physics of the Earth and Planetary Interiors (1) 88-92
As a preliminary step towards determination of the source of the natural remanence in highly-oxidised basalt lava flows, electron probe microanalysis has been carried out on the two main phases in each of two types of highly-oxidised iron-titanium oxide. The discovery of the source of NRM in these basalts is...
