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Articles 10321 - 10350 of 11750
Full-Text Articles in Entire DC Network
Characterization Of Organic Sulfur Compounds In Coals And Coal Macerals, Stephen R. Palmer, Edwin J. Hippo, Michael A. Kruge, John C. Crelling
Characterization Of Organic Sulfur Compounds In Coals And Coal Macerals, Stephen R. Palmer, Edwin J. Hippo, Michael A. Kruge, John C. Crelling
Department of Earth and Environmental Studies Faculty Scholarship and Creative Works
Peroxyacetic acid oxidation has been used to investigate the type and distribution of organic sulfur species in samples of vitrinite, sporinite and inertinite, separated from the Herrin No.6 and an Indiana No.5 coal seam. It was established that organic sulfur species were selectively preserved during oxidation and their analysis led to some of the first sulfur-33 NMR spectra obtained for coal. The effects of maceral separation processes on model compounds were also studied. Results from our studies support the following conclusions: 1). Different macerals have different distributions and types of organic sulfur species. 2). Organic sulfur compounds in coal occur …
Mining In Maine : Past, Present, And Future, Carolyn A. Lepage
Mining In Maine : Past, Present, And Future, Carolyn A. Lepage
Maine Collection
Mining in Maine : Past, Present, and Future
by Carolyn A. Lepage, Michael E. Foley, and Woodrow B. Thompson
Maine Geological Survey, Department of Conservation, Augusta, Me., 1990.
Contents: Introduction / The Early Years: Pre-Civil War / The Civil War to World War II / The War Years of the 1940's / The Postwar Years: 1940's to 1960 / The 1960's / The 1970's / Maine Mineral Resources Association / The 1980's / Current Mining and Exploration / Future Potential / Acknowledgments / References
Earthquakes In Nebraska, Second Edition (Expanded), R. R. Burchett
Earthquakes In Nebraska, Second Edition (Expanded), R. R. Burchett
Conservation and Survey Division: Faculty and Staff Publications
An earthquake is the result of an adjustment of the surface of the earth caused by a release of energy in the earth's crust. Faulting is one of many causes of earthquakes.
High-Volume Oil Discovery In Clinton County, Kentucky, Terence Hamilton-Smith, Brandon C. Nuttall, Patrick J. Gooding, Dan Walker, James A. Drahovzal
High-Volume Oil Discovery In Clinton County, Kentucky, Terence Hamilton-Smith, Brandon C. Nuttall, Patrick J. Gooding, Dan Walker, James A. Drahovzal
Information Circular--KGS
The Syndicated Options Limited of Austria No. 9372 Ferguson Brothers well, located in southern Clinton County, Kentucky, has recently produced oil at reported initial rates of 400 to 130 barrels per hour. Cumulative production for the first 8 weeks of flow following discovery on September 25, 1990, is reported to be nearly 150,000 barrels. The well is the result of deepening a previously abandoned well. Production is from the Middle Ordovician High Bridge Group (equivalent to the Stones River Group of Tennessee) at a depth of 1,008 feet. The reservoir is apparently a fractured carbonate rock, and the fracturing is …
Use Of Limestone, Lime, And Dolomite For So2 Emission Control In Kentucky, Garland R. Dever Jr.
Use Of Limestone, Lime, And Dolomite For So2 Emission Control In Kentucky, Garland R. Dever Jr.
Information Circular--KGS
Flue-gas desulfurization and atmospheric fluidized-bed combustion systems for sulfur dioxide (SO2) emission control have been installed at 13 coal- and gas-fired plants and one research laboratory in Kentucky. Limestone, lime, and dolomite are the principal SO2 sorbents used in these systems.
Nine coal-fired, electricity-generating plants in the State have installed wet-scrubbing systems for flue-gas desulfurization. Lime-based scrubbers are using Thiosorbic® lime, produced from the Camp Nelson Limestone (Ordovician) of north-central Kentucky, and carbide lime, a byproduct from the manufacture of acetylene in Louisville. Limestone-based scrubbing systems at three of the plants have used stone from the Warsaw, …
Analysis And Numerical Simulation Of The Ground Water System At The Bonneville Navigation Lock Site, Oregon, Dirk Baron
Analysis And Numerical Simulation Of The Ground Water System At The Bonneville Navigation Lock Site, Oregon, Dirk Baron
Dissertations and Theses
As part of the new navigation lock for Bonneville Dam a new water source for the Bonneville Fish Hatchery must be supplied. The hatchery is located on the Oregon side of the Columbia River downstream of the dam. It requires large quantities of water free from chemical and biological contamination. In addition, the water has to be in a narrow temperature range. Currently the fish hatchery receives its water from a well field that is located on the alluvial terrace downstream of Bonneville Dam. The well field lies in the proposed approach channel for the new lock and has to …
Economics Of Interceptor Drains : A Case Study, Andrew Bathgate, Ian Evans
Economics Of Interceptor Drains : A Case Study, Andrew Bathgate, Ian Evans
Journal of the Department of Agriculture, Western Australia, Series 4
This case study determines the most likely rate of return to capital invested in constructing seepage interceptor drains to reduce the effect of waterlogging on crop and pasture yields. The analysis of a farm in the Denbarker region, west of Albany, determined what increases were needed in pasture growth to justify the cost of constructing drains across four adjacent paddocks. The benefits of changing rotations to include lupins were also determined, as growing lupins was unprofitable before the construction of drains.
Characterization Of Radioactivity In Hot Springs National Park, Arkansas, C. E. Epperson, N. R. Rhodes
Characterization Of Radioactivity In Hot Springs National Park, Arkansas, C. E. Epperson, N. R. Rhodes
Journal of the Arkansas Academy of Science
No abstract provided.
Glacial Deposits, Vol. 18, 1989-1990, Department Of Geography-Geology
Glacial Deposits, Vol. 18, 1989-1990, Department Of Geography-Geology
Glacial Deposits
Newsletter of the Department of Geography-Geology
A Notch-Strengthening Effect In Fresh-Water Ice, Wilfrid A. Nixon, Erland M. Schulson
A Notch-Strengthening Effect In Fresh-Water Ice, Wilfrid A. Nixon, Erland M. Schulson
Dartmouth Scholarship
Tensile tests have been performed onnotched and unnotched cylindrical samples of randomlyoriented polycrystalline ice of controlled grain-size (between2.2 and 7.3mm) at a loading rate of lOOPaS-l and at a temperature of -10 0c. In the notched samples, the notch-root diameter was 80% of the base diameter. Anotch-strengthening effect was observed in the large-grained ice, with fracture stresses being up to 50% higher than that for unnotched samples of the same grain-size. This notch-strengthening effect diminished as grain-size decreased, disappearing at a grain-size of "'3 mm. The notch-strengthening effect is explained in terms of the triaxial stress constraint at the notch …
Lottery Proceeds In California Pay For Installation Of A Ground-Water Monitoring System, June Ann Oberdorfer, J. W. Williams, M. G. Smelser
Lottery Proceeds In California Pay For Installation Of A Ground-Water Monitoring System, June Ann Oberdorfer, J. W. Williams, M. G. Smelser
Faculty Publications
No abstract provided.
The Effect Of Industrial Development On The Sediment Contamination Of Apponaug Cove, A Historical Analysis, Marina Havan-Orumieh
The Effect Of Industrial Development On The Sediment Contamination Of Apponaug Cove, A Historical Analysis, Marina Havan-Orumieh
Marine Affairs Theses and Major Papers
Sediment cores have long been used to formulate the chronology of environmental contamination. This paper will investigate the utility of sediment cores in determining the chronology of trace metal contamination in Apponaug Cove, Rhode Island. A meter-long sediment core taken from the Cove was analyzed for chromium, copper, lead, zinc and nickel as well as organic pollutants coprostanol, polyaromatic hydrocarbons, benzotriazole and clorobenzotriazole. The core represents a close to 200 year record of sediments in Apponaug Cove. The cultural/economic changes in the Watershed in addition to environmental laws composed in the State and Federal levels which may have correlated with …
Middle Eocene Foraminifera From The Piney Point Formation Of The Virginia And Maryland Coastal Plain, Megan S. Jones
Middle Eocene Foraminifera From The Piney Point Formation Of The Virginia And Maryland Coastal Plain, Megan S. Jones
OES Theses and Dissertations
This study examines the foraminiferal fauna, both benthic and planktonic, of the outcropping (45 samples) and subsurface (31 samples) middle Eocene Piney Point Formation in Virginia and Maryland. The primary objective of this study is to further refine the depositional history of the Salisbury Embayment which is represented by the middle Eocene Piney Point Formation. Ninety-six species of benthic and planktonic foraminifera were identified in this study. Of these, several are characteristic of the middle Eocene: Asterigerina texana, Hanzawaia danvillensis, Ceratobulimina exima, Cibicides westi, Chiloguembelitria columbiana, C. stavensis, Testacarinata inconspicua and Pseudohastigerina wilcoxensislmicra. While these were relatively abundant, diagnostic middle …
The Hydrogeologic Effects Of Fly Ash Utilization In Concrete At Coal Creek Station, Underwood, North Dakota, Terry R. Johnson
The Hydrogeologic Effects Of Fly Ash Utilization In Concrete At Coal Creek Station, Underwood, North Dakota, Terry R. Johnson
Theses and Dissertations
Coal Creek Station is a two-unit 1100 megawatt electrical power plant located in southern McLean county, North Dakota. Annually, 5 million tons (4.5 million metric tons) of lignite are burned at the plant producing 550,000 tons (500,000 metric tons) of fly ash. Approximately 80,000 tons (72,624 metric tons) of ash are sold as a cement replacement, while the remainder is disposed of in lined evaporation ponds. The present study investigates the environmental consequences of ash utilization as an alternative to disposal, The Electric Power Research Institute (EPRI) provided funding for this investigation which involves the installation of 5,288 cu yds …
Depositional Environments And Sandstone Diagenesis In The Tyler Formation (Pennsylvanian), Western North Dakota, Larry R. Quandt
Depositional Environments And Sandstone Diagenesis In The Tyler Formation (Pennsylvanian), Western North Dakota, Larry R. Quandt
Theses and Dissertations
Thirty-three oil well cores were examined and approximately 3,100 oil well logs were used to determine the depositional environments of the Tyler Formation (Pennsylvanian) in northwestern North Dakota. Ninety sandstone thin-sections were described and twenty-nine sandstone samples were analyzed by scanning electron microscope/X-ray microanalysis techniques to characterize sandstone diagenesis.
The Tyler Formation in northwestern North Dakota is correlative with the lower unit of the Tyler Formation in southwestern North Dakota. The upper unit of the Tyler Formation in southwestern North Dakota is not present in northwestern North Dakota, contrary to previous workers suggestions. The Tyler Formation in northwestern North Dakota …
Neogastropods (Melongenidae, Fasciolariidae, Turridae) From The Cannonball Formation (Paleocene: Thanetian), North Dakota And South Dakota, Brian E. Silfer
Neogastropods (Melongenidae, Fasciolariidae, Turridae) From The Cannonball Formation (Paleocene: Thanetian), North Dakota And South Dakota, Brian E. Silfer
Theses and Dissertations
The Cannonball Formation of Paleocene age is a shallow-marine, clastic sequence exposed primarily in southwest-central North Dakota and northwestern South Dakota. The formation is characterized by alternating, poorly consolidated, relatively thin sandstone and thick mudstone units. The Cannonball neogastropod families Melongenidae, Fasciolariidae, and Turridae contain 20 species assigned to 15 genera based on 334 individuals from 50 localities. Four genera, Alticollarum, Obtusicarina, Vitticoncha, and Ericksonia are new, whereas Serrifusus, Mesorhytis, Rhombopsis, and Deussenia are first reported occurrences from Tertiary strata. Marshallaria is newly reported from North America and likely from the Northern Hemisphere. Twelve species are additions to the Cannonball …
Water Conservation Through Irrigation Technology, Donald H. Negri, John J. Hanchar, United States Department Of Agriculture, Economic Research Service
Water Conservation Through Irrigation Technology, Donald H. Negri, John J. Hanchar, United States Department Of Agriculture, Economic Research Service
All U.S. Government Documents (Utah Regional Depository)
Improved irrigation technology and advanced farm management practices offer an opportunity for agriculture to use water more efficiently. Farmers may install new equipment, such as drip irrigation systems, or adopt advanced water management practices to conserve water without sacrificing crop yields. While farmers' decision to adopt water-saving irrigation technology responds to the cost of water, physical properties of the land such as topography or soil properties of the land such as topography or soil texture dominate the choice of irrigation technology.
Low- And High-Relief Leduc Formation Reefs: A Seismic Analysis, Neil Lennart Anderson, Robert James Sidford Brown, Ronald C. Hinds
Low- And High-Relief Leduc Formation Reefs: A Seismic Analysis, Neil Lennart Anderson, Robert James Sidford Brown, Ronald C. Hinds
Geosciences and Geological and Petroleum Engineering Faculty Research & Creative Works
Leduc reefs have grown to widely varying heights and aereal extents along the Rimbey-Meadowbrook trend of central Alberta, resulting in significantly different seismic signatures. Three examples considered in this paper include two high-relief or full reefs from the Leduc-Woodbend field, an atoll and a pinnacle, each around 200 m in height but differing greatly in areal extent, about 100 km2 for the atoll and 1 km2 for the pinnacle. The third example, a low-relief or basalt reef from the Morinville field, is about 100 m high and 1 km2 in areal extent.
The Leduc-Woodbend and Morinville reefs …
Calibration Of A General Optical Equation For Remote Sensing Of Suspended Sediments In A Moderately Turbid Estuary, Richard P. Stumpf, Jonathan Pennock
Calibration Of A General Optical Equation For Remote Sensing Of Suspended Sediments In A Moderately Turbid Estuary, Richard P. Stumpf, Jonathan Pennock
School of Marine Science and Ocean Engineering
Abstract
A general algorithm for determining suspended sediment concentrations in the surface waters of estuaries has been developed for use with satellite data. The algorithm uses a three-parameter general optical equation to relate suspended sediment concentrations to water reflectances that have been corrected for sun angle effects, atmospheric path radiance, and tidal excursion. Using data collected by the advanced very high resolution radiometer on five different dates, reflectances were determined using two different methods, one providing maximum correction for haze and the other providing minimum sensitivity to pigments. For both methods, in situ and remotely sensed samples from Delaware Bay …
A Geophysical Study Of The Easternmost Piedmont: Brunswick County, Virginia, Mark A. Corbin
A Geophysical Study Of The Easternmost Piedmont: Brunswick County, Virginia, Mark A. Corbin
OES Theses and Dissertations
Gravity and magnetic models indicate that a steeply dipping, mylonitic shear zone recognized by reconnaissance mapping in the easternmost Piedmont of Brunswick County, Virginia is a listric fault. A pronounced 3 to 5 mgal Bouguer anomaly high is associated with the fault zone. A band of N10° trending aeromagnetic anomalies delineate the areal extent of the fault zone. The fault zone flattens eastward over a short distance to a depth of 15 kms where it joins a near horizontal surface that cuts across the region. This surface is herein interpreted to be a decollement. The fault zone of this study …
Wetland Study Of Southeastern Portage Township, Kalamazoo County, Michigan, Kevin M. Walsh
Wetland Study Of Southeastern Portage Township, Kalamazoo County, Michigan, Kevin M. Walsh
Masters Theses
Under the Clean Water Act, Congress passed legislation to maintain and restore the chemical, physical, and biological integrity of the water of the United States. The objective of this study is to determine if the wooded area located in Upjohn Company's Property in southeastern Portage Township, Portage, Michigan falls under the classification of a wetland.
This objective has been pursued through an examination of the hydrology of the area, the soil characteristics of the area, and the vegetation types and characteristics of the area. These parameters have been utilized following the guidelines outlined in the "Corps of Engineers Wetland Delineation …
Late-Holocene Earthflows Of The Willard Playa/Dune Complex, Estancia Valley, New Mexico: A Geomorphic Response To Climatic Change, Kurt A. Goebel
Late-Holocene Earthflows Of The Willard Playa/Dune Complex, Estancia Valley, New Mexico: A Geomorphic Response To Climatic Change, Kurt A. Goebel
UNLV Theses, Dissertations, Professional Papers, and Capstones
Late-middle to late Holocene dune sediment that overlies Pleistocene lacustrine sediment marks the onset of xeric conditions in the Estancia Valley, central New Mexico. Incised into the underlying lacustrine sediments, the modern deflation basins are enclosed by parabolic dunes composed of clay and gypsum derived from the underlying sediment.
Located on the in-facing dune slopes of the deflation basins, the most striking geomorphic feature of this dune complex are numerous elongated scars. These relict scars document a geomorphically distinct earthflow event. Arroyos that cut into flow scars expose eolian earthflow sediment overlying lacustrine deposits. In the zone of depletion, erosional-flow …
The Effect Of The Specimen–Platen Interface On Internal Cracking And Brittle Fracture Of Ice Under Compression: High-Speed Photography, E. M. Schulson, M. C. Gies, G. J. Lasonde, W. A. Nixon
The Effect Of The Specimen–Platen Interface On Internal Cracking And Brittle Fracture Of Ice Under Compression: High-Speed Photography, E. M. Schulson, M. C. Gies, G. J. Lasonde, W. A. Nixon
Dartmouth Scholarship
Uniaxial compression experiments at –10°C at 10−3s−1 on fresh-water, granular ice have established through the use of high-speed photography that internal cracks nucleate preferentially away from the ice/platen (i/p) interface under conditions of i/p contraint, but near the interface under conditions of i/p expansion. Under conditions of little i/p interaction, cracks nucleate more or less randomly throughout the specimen. Correspondingly, the brittle-fracture strength decreases as the i/p interaction changes from compressive to tensile. These effects are explained in terms of the spatial variation of the maximum shear stress and the crack density.
Work Plan For The Missouri Basin States Association, David L. Pope
Work Plan For The Missouri Basin States Association, David L. Pope
Boundaries and Water: Allocation and Use of a Shared Resource (Summer Conference, June 5-7)
6 pages.
The Northwest Power Planning Council: A Model For Cooperative Planning In The Missouri Basin?, Gerald Mueller
The Northwest Power Planning Council: A Model For Cooperative Planning In The Missouri Basin?, Gerald Mueller
Boundaries and Water: Allocation and Use of a Shared Resource (Summer Conference, June 5-7)
16 pages.
Contains references.
Within The Hundredth Meridian: Western States And Their River Basins In A Time Of Transition, John M. Volkman, Kai N. Lee
Within The Hundredth Meridian: Western States And Their River Basins In A Time Of Transition, John M. Volkman, Kai N. Lee
Boundaries and Water: Allocation and Use of a Shared Resource (Summer Conference, June 5-7)
29 pages.
Contains footnotes.
The Delaware River Basin: Courts, Compacts And Commissions, R. Timothy Weston
The Delaware River Basin: Courts, Compacts And Commissions, R. Timothy Weston
Boundaries and Water: Allocation and Use of a Shared Resource (Summer Conference, June 5-7)
112 pages (includes illustrations and 1 map).
Contains references.
Coordinated Water Management In A Basin With Erratic Surface Supplies: The Law North And South Of The Pecos, Charles T. Dumars
Coordinated Water Management In A Basin With Erratic Surface Supplies: The Law North And South Of The Pecos, Charles T. Dumars
Boundaries and Water: Allocation and Use of a Shared Resource (Summer Conference, June 5-7)
11 pages.
Contains references.
State Resource Sovereignty In A Post-Sporhase World: The Hueco Bolson, A. Dan Tarlock
State Resource Sovereignty In A Post-Sporhase World: The Hueco Bolson, A. Dan Tarlock
Boundaries and Water: Allocation and Use of a Shared Resource (Summer Conference, June 5-7)
30 pages.
Contains references.
Unique Legal Issues Raised By Long Distance Water Transfer Proposals: Etsi, The Columbia River, Nawapa, Ralph W. Johnson
Unique Legal Issues Raised By Long Distance Water Transfer Proposals: Etsi, The Columbia River, Nawapa, Ralph W. Johnson
Boundaries and Water: Allocation and Use of a Shared Resource (Summer Conference, June 5-7)
12 pages.
Contains references.