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Articles 74551 - 74580 of 78659
Full-Text Articles in Entire DC Network
Nebraska Summary: S004 Deutz-Allis 6250, Nebraska Tractor Test Lab
Nebraska Summary: S004 Deutz-Allis 6250, Nebraska Tractor Test Lab
Nebraska Tractor Tests
ABOUT THE TEST REPORT AND USE OF THE DATA The test data contained in this report are a tabulation of the results of a series of tests. Due to the restricted format of these pages, only a limited amount of data and not all of the tractor specifications are included. The full OECD report contains usually about 30 pages of data and specifications. The test data were obtained for each tractor under similar conditions and therefore, provide a means of comparison of performance based on a limited set of reported data. EXPLANATION OF THE TEST PROCEDURES Purpose The purpose of …
Appendices: Water Quality Management In Utah Mountain Watersheds, Keith R. Kimball, E. Joe Middlebrooks
Appendices: Water Quality Management In Utah Mountain Watersheds, Keith R. Kimball, E. Joe Middlebrooks
Reports
No abstract provided.
University Of Texas At Tyler Catalog, 1986-1988, University Of Texas At Tyler
University Of Texas At Tyler Catalog, 1986-1988, University Of Texas At Tyler
Catalogs
This Item is protected by copyright and/or related rights. You are free to use this Item in any way that is permitted by the copyright and related rights legislation that applies to your use. In addition, no permission is required from the rights-holder(s) for educational uses. For other uses, you need to obtain permission from the rights-holder(s).
Historical Analysis Of The Cultural Eutrophication Of Lake Maxinkuckee, Indiana, Thomas Crisman
Historical Analysis Of The Cultural Eutrophication Of Lake Maxinkuckee, Indiana, Thomas Crisman
School of Geosciences Faculty and Staff Publications
No abstract provided.
Late Prehistoric And Protohistoric Large Mammal Zoogeography Of Virginia, Robert K. Rose
Late Prehistoric And Protohistoric Large Mammal Zoogeography Of Virginia, Robert K. Rose
Biological Sciences Faculty Publications
Evidence derived from18late prehistoric (middle and late Woodland Period) archeological sites, from several early historical accounts, and from the current understanding of the distribution of Virginia mammals indicates that the large mammal fauna of the Commonwealth has not changed substantially within the past 4,000 yrs. Some species (e.g., bison, elk, timber wolf, and mountain lion) have been extirpated since the settlement of Virginia by Europeans; some previously extirpated species (e.g., porcupine, coyote, and beaver) have been naturally or artificially reintroduced during the historical period, and others (e.g., woodchuck and red fox) probably have expanded their distributions as a result of …
Deflation Basin Stratigraphy: Southwestern North Dakota, Robert E. Seidel
Deflation Basin Stratigraphy: Southwestern North Dakota, Robert E. Seidel
Theses and Dissertations
The goal of this study was the determination of a similar depositional sequence for sediments from a number of shallow basins in southwestern North Dakota and the comparison of this sequence with other work either in the area or in similar geographic environments.
Samples were obtained by augering, coring, and trenching selected basins. They were analyzed by means of: core description; detailed texture analyses on selected cores by sieve, pipette, and SediGraph techniques; and mineralogy by x-ray diffraction. Computer analyses were used to characterize grain-size distributions and to correlate texture and mineralogy by cross-association.
The results of the study verified …
Nebraska Summary: S023 Case-Ih 885, Nebraska Tractor Test Lab
Nebraska Summary: S023 Case-Ih 885, Nebraska Tractor Test Lab
Nebraska Tractor Tests
ABOUT THE TEST REPORT AND USE OF THE DATA The test data contained in this report are a tabulation of the results of a series of tests. Due to the restricted format of these pages, only a limited amount of data and not all of the tractor specifications are included. The full OECD report contains usually about 30 pages of data and specifications. The test data were obtained for each tractor under similar conditions and therefore, provide a means of comparison of performance based on a limited set of reported data. EXPLANATION OF THE TEST PROCEDURES Purpose The purpose of …
Nebraska Summary: S091 S.A.M.E Explorer 70dt, Nebraska Tractor Test Lab
Nebraska Summary: S091 S.A.M.E Explorer 70dt, Nebraska Tractor Test Lab
Nebraska Tractor Tests
ABOUT THE TEST REPORT AND USE OF THE DATA The test data contained in this report are a tabulation of the results of a series of tests. Due to the restricted format of these pages, only a limited amount of data and not all of the tractor specifications are included. The full OECD report contains usually about 30 pages of data and specifications. The test data were obtained for each tractor under similar conditions and therefore, provide a means of comparison of performance based on a limited set of reported data. EXPLANATION OF THE TEST PROCEDURES Purpose The purpose of …
Deep Flow Variability In Central Drake Passage, John M. Klinck, Eileen E. Hofmann
Deep Flow Variability In Central Drake Passage, John M. Klinck, Eileen E. Hofmann
CCPO Publications
A rotary empirical orthogonal function analysis of the currents measured in central Drake Passage during DRAKE 79 shows that the deep (2500 m) flow has the same spatial and temporal structure as the flow at 500 m, suggesting that current variability in this region penetrates to the bottom. However, comparison of the time amplitude of the corresponding modes indicates that the variability of the 2500 m flow resulting from north to south shifts in the location of the Polar Front lags that at 500 m by one to three days. This implies that the Polar Front slopes to the east …
Penetrating Ionizing Radiation Levels Observed In The Lower Arkansas And White River Valleys Of Arkansas, C. E. Epperson, S. Meiners, D. Swindle
Penetrating Ionizing Radiation Levels Observed In The Lower Arkansas And White River Valleys Of Arkansas, C. E. Epperson, S. Meiners, D. Swindle
Journal of the Arkansas Academy of Science
Environmental levels of penetrating ionizing radiation were measured in the lower Arkansas and White River valleys of Arkansas. Measurements of environmental gamma and cosmic rays were made using a portable high pressure ionization chamber. The surveyed area encompassed a large coal-fired industrial plant. Observed exposure rates ranged from 5.9 microRoentgens per hour (μR/h) to 13.4 μR/h. The average exposure rate for the region was 8.8 μR/h. This value corresponds to 77 millirem (mrem) or 0.77 milliSieverts (mSv) per year. In comparison, a prior state-wide survey reported an average dose equivalent rate of 78.2 mrem (0.782 mSv) per year in Arkansas.
Electrochemistry Of Dihalogenated Nicotonic Acids In Aqueous And Aprotic Media, Ali U. Shaikh, Tappi A. Dixon, Lourie A. Battles, Frank L. Setliff
Electrochemistry Of Dihalogenated Nicotonic Acids In Aqueous And Aprotic Media, Ali U. Shaikh, Tappi A. Dixon, Lourie A. Battles, Frank L. Setliff
Journal of the Arkansas Academy of Science
The electrochemical reduction of several 2,5- and 5,6- dihalonicotinic acids have been studied in dimethyl sulfoxide as well as in aqueous buffers of different pH. The polarographic half-wave potentials for the reduction of these compounds in both media are reported here. The compounds appear to reduce at the carboxyl group. The presence of halogen atoms on the pyridine ring facilitates reduction.
Interspecific Correlations Of Harvest And Price For Arkansas Furbearers: A Cautionary Note, James H. Peck, Gary A. Heidt, Anita J. Giggleman
Interspecific Correlations Of Harvest And Price For Arkansas Furbearers: A Cautionary Note, James H. Peck, Gary A. Heidt, Anita J. Giggleman
Journal of the Arkansas Academy of Science
No abstract provided.
Wind-Driven Upwelling In The Vicinity Of Cape Finisterre, Spain, Charles R. Mcclain, Shenn-Yu Chao, Larry P. Atkinson, Jack O. Blanton, Frederico De Castillejo
Wind-Driven Upwelling In The Vicinity Of Cape Finisterre, Spain, Charles R. Mcclain, Shenn-Yu Chao, Larry P. Atkinson, Jack O. Blanton, Frederico De Castillejo
CCPO Publications
Observations and numerical simulations of upwelling along the Galician coast of Spain during April 1982 are presented. In situ measurements include shipboard determinations of hydrographic and biological parameters from a grid of stations covering the continental shelf from Cape Finisterre to Ria de Vigo, sea level data from Vigo and La Coruña, and wind stress estimates derived from the ship winds and from surface pressure charts. Sea surface temperature information and pigment concentration information have been obtained from a sequence of satellite images from the NOAA 7 advanced very high resolution radiometer and the Nimbus 7 coastal zone color scanner, …
Shire Of Wanneroo : A Study Of Land Resources And Planning Considerations, Department Of Agriculture, Western Australia, M R. Wells, A J. Clarke
Shire Of Wanneroo : A Study Of Land Resources And Planning Considerations, Department Of Agriculture, Western Australia, M R. Wells, A J. Clarke
Resource management technical reports
No abstract provided.
Glacial Deposits, Vol. 14, 1985-1986, Department Of Geography-Geology
Glacial Deposits, Vol. 14, 1985-1986, Department Of Geography-Geology
Glacial Deposits
Newsletter of the Department of Geography-Geology
Electrochemical Investigation Of The Effects Of Temperature, Ph, And Electrolyte On The Electron Transfer Reactions Of Cytochrome C, Kent Brian Koller
Electrochemical Investigation Of The Effects Of Temperature, Ph, And Electrolyte On The Electron Transfer Reactions Of Cytochrome C, Kent Brian Koller
Theses and Dissertations
Spectroelectrochemical and electrochemical methods have been used to investigate the characteristics of heterogeneous electron transfer between cytochrome c and indium oxide electrodes. Direct electron transfer between cytochrome c and solid electrodes is of interest due to the interfacial character of electron transfer between the protein and its membrane-bound physiological redox partners. The conformation of ferricytochrome c is affected more by changes in temperature or pH than is its reduced form, ferrocytochrome c. This difference in conformational stability is attributed to the +1 charge of the heme in ferricytochrome c that is largely embedded in the hydrophobic interior of the enzyme. …
Biological Effects Of Heavy Ions From The Standpoint Of Target Theory, Robert Katz
Biological Effects Of Heavy Ions From The Standpoint Of Target Theory, Robert Katz
Robert Katz Publications
The biological effect of heavy ions is best described through the action cross section, as a function of the end-point of interest and the charge and speed of the ion. In track theory this is called the “ion-kill" cross section, for it is the effect produced by a single heavy ion and its delta rays. As with nuclear emulsions the biological track structure passes from the grain count regime to the track width regime to the thindown region with an increase in LET. With biological cells, as with any detector capable of storing sub-lethal damage, with low LET irradiation the …
Discovery Of Two Additional Prosimian Primate Families (Omomyidae, Lorisidae) In The African Oligocene, Elwyn L. Simons, Thomas M. Bown, D. Tab Rasmussen
Discovery Of Two Additional Prosimian Primate Families (Omomyidae, Lorisidae) In The African Oligocene, Elwyn L. Simons, Thomas M. Bown, D. Tab Rasmussen
United States Geological Survey: Staff Publications
Three new specimens reported here are referable to the Omomyidae and Lorisidae, and represent only the second and third prosimian primates found in the Oligocene rocks of the Fayum, Egypt. The Fayum omomyid extends the range of the Omomyidae into Africa, while the Fayum lorisid is the oldest record of the Lorisidae world-wide. Afrotarsius established ?Tarsiidae as a third prosimian family present in Oligocene rocks of the Fayum region of Egypt (Simons & Bown, 1985). These new occurrences significantly reorient paleogeographic study of primate origins. In a fauna famed for the presence of about a thousand specimens of early Anthropoidea-viz. …
Characterization Of The Capsular Polysaccharides On Cell Membranes Of Rhizobium Trifolii And Three Of Its Nod- Mutants, Jesse Ardosa
Characterization Of The Capsular Polysaccharides On Cell Membranes Of Rhizobium Trifolii And Three Of Its Nod- Mutants, Jesse Ardosa
Masters Theses
The ever-present specter of the inavailability of food production to increase in direct proportion to population growth haunts practically every nation of the world. As more and more tracts of land are incorporated to accommodate expanding cities, they become less available for food production. Emphasis, therefore, is placed on obtaining a higher yield per acreage planted. Since fertilization is not reliable in the long term due to an eventual depletion of raw materials for fertilizers, the ability of plants like legumes to assimilate free soil nitrogen on their own has become increasingly important [1,11,14,17]. However, the mechanisms involved are still …
Analysis Of The Charleston, Illinois Water Supply For The Presence Of Organic Mutagens Utilizing The Ames Salmonella/Microsome Assay, Steven Lee Washburn
Analysis Of The Charleston, Illinois Water Supply For The Presence Of Organic Mutagens Utilizing The Ames Salmonella/Microsome Assay, Steven Lee Washburn
Masters Theses
Water samples from the Charleston, Illinois water supply and selected agricultural run-off areas were tested for the presence of organic mutagenic chemicals. The Ames Salmonella/microsome mutagenicity assay utilizing strains TA98 and TA100 was used to analyze concentrated water samples. A special set of samples was exposed to the S9 activation system coupled with the TA98 strain to simulate the mammalian metabolic system.
No mutagens were detected in any of the samples tested. Several positive and negative control systems were included in the testing system. Negative control systems were used to determine the average spontaneous reversion rates for each strain for …
Use Of Isomerizable N-Alkylmerocyanine Dyes To Robe Molecular Interactions Within Micellar Solubilization Sites, Kim Jason Dennis
Use Of Isomerizable N-Alkylmerocyanine Dyes To Robe Molecular Interactions Within Micellar Solubilization Sites, Kim Jason Dennis
University of the Pacific Theses and Dissertations
Effects of aqueous surfactant solutions upon cis/trans isomerization reactions of various N-alkyl-merocyanine dyes (II) were studied. Dramatic rate enhancements were found for all dyes in CTAB and SDS solutions above the CMC. CTAB solutions showed the greatest effect with some dye isomerizations catalyzed in excess of 1000-fold. Increases in either CTAB concentration or dye isomerization rates. N-methyl through N-pentyl dye isomerization rates were measured as a function of CTAB concentration and the data treated according to the pseudophase model for micellar catalysis. KS values ranged from 198 to 2000 M-1 for N-methyl to N-pentyl dyes, respectively. Micellar rate …
Amphiphilic Association Structures And Some Aspects Of Foam Stability, Jia-Hwa Fang
Amphiphilic Association Structures And Some Aspects Of Foam Stability, Jia-Hwa Fang
Doctoral Dissertations
"This investigation was performed in order to study two interesting and important problems in foams.
Foam separation was studied in the model system of water - sodium octylsulfonate - decanol. The efficiency of foam separation as a function of surfactant concentration and decanol content were measured. The results were related to the association structures of amphiphiles in aqueous systems.
Foam polymerization was conducted in the amphiphilic system containing water, polymerizable surfactant and oleyl alcohol. Liquid foams were produced in one three - phase region. The location and optical pattern of liquid crystals on the foam surface were observed by photomicroscope …
Magnetite And Magnetotaxis In Bacteria And Algae, Richard B. Frankel
Magnetite And Magnetotaxis In Bacteria And Algae, Richard B. Frankel
Physics
We are using Mössbauer spectroscopy and magnetic measurements in conjunction with electrochemical, pH and optical spectroscopic measurements to study the mechanisms of iron containing core of these proteins.
Biological Effects Of Static Magnetic Fields, Richard B. Frankel
Biological Effects Of Static Magnetic Fields, Richard B. Frankel
Physics
No abstract provided.
Factors Regulating Settlement And Microhabitat Use By Spiny Lobsters Panulirus Argus, William F. Herrnkind, Mark J. Butler Iv
Factors Regulating Settlement And Microhabitat Use By Spiny Lobsters Panulirus Argus, William F. Herrnkind, Mark J. Butler Iv
Biological Sciences Faculty Publications
Clumps of highly-branched red algae Laurencia spp. serve as important settling habitat for postlarval spiny lobsters Panulirus argus and as residence for early benthic-stage juveniles. Given choice between the 2 most abundant macrophytes in Florida Bay, Laurencia spp. and the seagrass Thalassia testudinum, postlarval and juvenile lobsters chose Laurencia spp. Postlarvae apparently use intricate algal architecture as a cue for settlement, whereas juveniles use both architecture and food abundance in selecting habitat. In tethering experiments, predation on juvenile lobsters was very high on open sand, much reduced in algal clumps and seagrass, and lowest in dense algal meadows. Predation …
Depositional History And Diagenesis Of The Sherwood And Bluell Beds (Mississippian) Southwestern Renville County, North Dakota, Christopher F. Quinn
Depositional History And Diagenesis Of The Sherwood And Bluell Beds (Mississippian) Southwestern Renville County, North Dakota, Christopher F. Quinn
Theses and Dissertations
The Sherwood "bed" and the overlying Bluell "bed" are two log-defined zones at the top of the Frobisher-Alida interval. The Frobisher-Alida interval, within either the Mission Canyon carbonates or the overlying Charles evaporites, is composed of a number (up to six) of log-defined zones. On the northeast flank of the Williston Basin the zones are separated by even, lithologically homogeneous argillaceous marker beds. Basinward, these marker beds terminate into less argillaceous carbonates.
The area studied covered four townships in southwest Renville·county, North Dakota. The section studied included the K-1 marker, the Sherwood bed (with the Sherwood argillaceous marker), and the …
Paleontology And Stratigraphy Of The Niobrara Formation (Upper Cretaceous) Of Eastern North Dakota With Emphasis On The Calcareous Nannoplankton, Jeremy Reiskind
Paleontology And Stratigraphy Of The Niobrara Formation (Upper Cretaceous) Of Eastern North Dakota With Emphasis On The Calcareous Nannoplankton, Jeremy Reiskind
Theses and Dissertations
The Upper Cretaceous Niobrara Formation in eastern North Dakota consists of calcareous shales, chalks, and shaly chalks. The formation was studied from surface exposures, cores, and well logs. The Niobrara is 62 feet (19m) to 272 feet (83 m) and is thickest to the northeast, in a central linear area, and to the southwest. In a northern area, it was divided into a lower, calcareous shale member, and an upper, chalky member. In a.southern area, five stratigraphic units were recognized, in ascending order: a lower shaly chalk, a shale, a middle shaly chalk, a chalk, and an upper shaly chalk. …
Interconnected Reproductive And Vegetative Remains Of Populus (Salicaceae) From The Middle Eocene Green River Formation, Northeastern Utah, William D. Tidwell, Steven R. Manchester, David L. Dilcher
Interconnected Reproductive And Vegetative Remains Of Populus (Salicaceae) From The Middle Eocene Green River Formation, Northeastern Utah, William D. Tidwell, Steven R. Manchester, David L. Dilcher
Faculty Publications
A new specimen from the Middle Eocene Evacuation Creek Member of the Green River Formation in northeastern Utah shows a twig with several leaves of Populus wilmattae Crockrell and a fruiting raceme attache. This specimen establishes for the first time the type of fruits borne by P. wilmattae and provides additional characters with which to assess its taxonomic and evolutionary status. An associated seed shows attached placental hairs like those of extant species of Populus. The Green River fossil differs from extant Populus species in having basically palmate leaf venation and in bearing its fruiting axis on a young twig. …
Sediment Processing And Selective Feeding By Pectinaria Koreni (Polychaeta: Pectinariidae), Fred C. Dobbs, Teresa A. Scholly
Sediment Processing And Selective Feeding By Pectinaria Koreni (Polychaeta: Pectinariidae), Fred C. Dobbs, Teresa A. Scholly
OES Faculty Publications
Pectinaria (Lagis) koreni (Malmgren) is an abundant, deposit-feeding, infaunal inhabitant of shallow-water marine environments in northern Europe. Laboratory experiments were performed to quantify the polychaete's sediment processing in 2 distinct sediments, 1 fine-grained and high in combustibles, the other coarse-grained and low in combustibles. Gut passage time and time to pseudodefecation were predictable only in coarse-grained sediment. In both sediments, reworking rate increased with worm size and over time, although temporal patterns differed in the 2 sediments. The ratio of pseudodefecated sediment to defecated sediment did not differ significantly over time in either sediment, but the ratio was greater in …
In Situ Growth And Chemical Composition Of The Giant Kelp, Macrocystis Pyrifera: Response To Temporal Changes In Ambient Nutrient Availability, Richard C. Zimmerman, James N. Kremer
In Situ Growth And Chemical Composition Of The Giant Kelp, Macrocystis Pyrifera: Response To Temporal Changes In Ambient Nutrient Availability, Richard C. Zimmerman, James N. Kremer
OES Faculty Publications
Temporal variations in growth of the giant kelp Macrocystis pyrifera were examined in relation to ambient nutrient availability and chemical composition of mature blades, the primary site of nutrient and carbohydrate storage in M. pyrifera. The effect of nutrient availability on growth was well approximated by a Monod rectangular hyperbola, with growth saturating at ambient nitrate concentra- tions between 1 and 2 FM. M. pyrlfera was unable to generate nutrient reserves that would last beyond 30 d. Nitrogen reserves were stored as free amino acids, and generally constituted about 10 % of total tissue nitrogen. Total nitrogen content was …