Making fired bricks with spent equilibrium catalyst-a technical feasibility study
M.-L. Chou, L.-M. Chen, Y.-C. Lai, S.-F. Chou
2009, Journal of Solid Waste Technology and Management (35) 200-208
Fluid catalytic cracking in an oil refinery uses a catalyst, such as an alumino-silicate zeolite, in the conversion of heavy hydrocarbons to light hydrocarbons. A small fraction of the catalyst is continually replaced with fresh catalyst to maintain activity. In North America, more than 400 tons of spent alumino-silicate equilibrium...
Geodetically inferred coseismic and postseismic slip due to the M 5.4 31 October 2007 Alum Rock earthquake
J. R. Murray-Moraleda, R.W. Simpson
2009, Bulletin of the Seismological Society of America (99) 2784-2800
On 31 October 2007 the M 5.4 Alum Rock earthquake occurred near the junction between the Hayward and Calaveras faults in the San Francisco Bay Area, producing coseismic and postseismic displacements recorded by 10 continuously operating Global Positioning System (GPS) instruments. The cumulative postseismic displacements over the four months following...
Interannual variation of carbon fluxes from three contrasting evergreen forests: The role of forest dynamics and climate
C.A. Sierra, H.W. Loescher, M. E. Harmon, A.D. Richardson, D.Y. Hollinger, S.S. Perakis
2009, Ecology (90) 2711-2723
Interannual variation of carbon fluxes can be attributed to a number of biotic and abiotic controls that operate at different spatial and temporal scales. Type and frequency of disturbance, forest dynamics, and climate regimes are important sources of variability. Assessing the variability of carbon fluxes from these specific sources can...
Geographic relatedness and predictability of Escherichia coli along a peninsular beach complex of Lake Michigan
M.B. Nevers, D.A. Shively, G.T. Kleinheinz, C.M. McDermott, W. Schuster, V. Chomeau, R.L. Whitman
2009, Journal of Environmental Quality (38) 2357-2364
To determine more accurately the real-time concentration of fecal indicator bacteria (FIB) in beach water, predictive modeling has been applied in several locations around the Great Lakes to individual or small groups of similar beaches. Using 24 beaches in Door County, Wisconsin, we attempted to expand predictive models to multiple...
The organic contamination level based on the total soil mass is not a proper index of the soil contamination intensity
H.-W. Hung, Sheng G. Daniel, T.-F. Lin, Y. Su, C. T. Chiou
2009, Environmental Pollution (157) 2928-2932
Concentrations of organic contaminants in common productive soils based on the total soil mass give a misleading account of actual contamination effects. This is attributed to the fact that productive soils are essentially water-saturated, with the result that the soil uptake of organic compounds occurs principally by partition into the...
Evidence for long-term climate change in Upper Devonian strata of the central Appalachians
D. K. Brezinski, C. B. Cecil, V.W. Skema, C.A. Kertis
2009, Palaeogeography, Palaeoclimatology, Palaeoecology (284) 315-325
The highest 1 to 200 m of the Upper Devonian (Famennian) Catskill and equivalent Hampshire formations exhibit a noticeable vertical or stratigraphic change in color and a shift in lithologic character. The lower part of the unit is characterized by typically red, channel-phase sandstones and overbank siltstone and mudstone containing...
Cross-comparison of the IRS-P6 AWiFS sensor with the L5 TM, L7 ETM+, & Terra MODIS sensors
G. Chander, X. Xiong, A. Angal, T. Choi, R. Malla
2009, Conference Paper, Proceedings of SPIE - The International Society for Optical Engineering
As scientists and decision makers increasingly rely on multiple Earth-observing satellites to address urgent global issues, it is imperative that they can rely on the accuracy of Earth-observing data products. This paper focuses on the crosscomparison of the Indian Remote Sensing (IRS-P6) Advanced Wide Field Sensor (AWiFS) with the Landsat...
Coarse-grained sediment delivery and distribution in the Holocene Santa Monica Basin, California: Implications for evaluating source-to-sink flux at millennial time scales
B.W. Romans, W. R. Normark, M.M. McGann, J.A. Covault, S.A. Graham
2009, Geological Society of America Bulletin (121) 1394-1408
Utilizing accumulations of coarse-grained terrigenous sediment from deep-marine basins to evaluate the relative contributions of and history of controls on sediment flux through a source-to-sink system has been difficult as a result of limited knowledge of event timing. In this study, six new radiocarbon (14C) dates are integrated with five...
Disturbance alters local-regional richness relationships in appalachian forests
R.T. Belote, N.J. Sanders, R.H. Jones
2009, Ecology (90) 2940-2947
Whether biological diversity within communities is limited by local interactions or regional species pools remains an important question in ecology. In this paper, we investigate how an experimentally applied tree-harvesting disturbance gradient influenced local-regional richness relationships. Plant species richness was measured at three spatial scales (2 ha = regional; 576...
Relative abundance and species richness of cerambycid beetles in partial cut and uncut bottomland hardwood forests
P. Newell, S. King
2009, Canadian Journal of Forest Research (39) 2100-2108
Partial cutting techniques are increasingly advocated and used to create habitat for priority wildlife. However, partial cutting may or may not benefit species dependent on deadwood; harvesting can supplement coarse woody debris in the form of logging slash, but standing dead trees may be targeted for removal. We sampled cerambycid...
Monitoring of land subsidence and ground fissures in Xian, China 2005-2006: Mapped by sar Interferometry
C.Y. Zhao, Q. Zhang, X.-L. Ding, Z. Lu, C.S. Yang, X.M. Qi
2009, Environmental Geology (58) 1533-1540
The City of Xian, China, has been experiencing significant land subsidence and ground fissure activities since 1960s, which have brought various severe geohazards including damages to buildings, bridges and other facilities. Monitoring of land subsidence and ground fissure activities can provide useful information for assessing the extent of, and mitigating...
Pink shrimp as an indicator for restoration of everglades ecosystems
Joan A. Browder, M. B. Robblee
2009, Ecological Indicators (9)
The pink shrimp, Farfantepenaeus duorarum, familiar to most Floridians as either food or bait shrimp, is ubiquitous in South Florida coastal and offshore waters and is proposed as an indicator for assessing restoration of South Florida's southern estuaries: Florida Bay, Biscayne Bay, and the mangrove estuaries of the lower southwest...
Monitoring urban land cover change by updating the national land cover database impervious surface products
George Z. Xian, Collin G. Homer
2009, Conference Paper, 2009 Joint urban remote sensing event
The U.S. Geological Survey (USGS) National Land Cover Database (NLCD) 2001 is widely used as a baseline for national land cover and impervious conditions. To ensure timely and relevant data, it is important to update this base to a more recent time period. A prototype method was developed to update...
Stratigraphic controls on saltwater intrusion in the Dominguez Gap area of coastal Los Angeles
Brian D. Edwards, Kenneth D. Ehman, Daniel J. Ponti, Eric G. Reichard, John Tinsley, Robert J. Rosenbauer, Michael T. Land
2009, Special Paper of the Geological Society of America 375-395
The Los Angeles Basin is a densely populated coastal area that significantly depends on groundwater. A part of this groundwater supply is at risk from saltwater intrusion—the impetus for this study. High-resolution seismic-reflection data collected from the Los Angeles–Long Beach Harbor Complex have been combined with borehole geophysical and descriptive...
Composition and variation of noise recorded at the Yellowknife Seismic Array, 1991-2007
K.D. Koper, B. De Foy, H. Benz
2009, Journal of Geophysical Research B: Solid Earth (114)
We analyze seismic noise recorded on the 18 short-period, vertical component seismometers of the Yellowknife Seismic Array (YKA). YKA has an aperture of 23 km and is sited on cratonic lithosphere in an area with low cultural noise. These properties make it ideal for studying natural seismic noise at periods...
Angler awareness of aquatic nuisance species and potential transport mechanisms
K.K. Gates, C.S. Guy, A.V. Zale, T.B. Horton
2009, Fisheries Management and Ecology (16) 448-456
The role anglers play in transporting aquatic nuisance species (ANS) is important in managing infestations and preventing introductions. The objectives of this study were to: (1) quantify angler movement patterns in southwestern Montana, ANS awareness and equipment cleaning practices; and (2) quantify the amount of soil transported on boots and...
Genetic susceptibility to chronic wasting disease in free-ranging white-tailed deer: complement component C1q and Prnp polymorphisms
Julie A. Blanchong, Dennis M. Heisey, Kim T. Scribner, Scot V. Libants, Chad Johnson, Judd M. Aiken, Julia A. Langenberg, Michael D. Samuel
2009, Infection, Genetics and Evolution (9) 1329-1335
The genetic basis of susceptibility to chronic wasting disease (CWD) in free-ranging cervids is of great interest. Association studies of disease susceptibility in free-ranging populations, however, face considerable challenges including: the need for large sample sizes when disease is rare, animals of unknown pedigree create a risk of spurious results...
Fish passage and abundance around grade control structures on incised streams
J.T. Thomas, A.N. Papanicolaou, C.L. Pierce, D.C. Dermisis, M.E. Litvan, C.J. Larson
2009, Conference Paper, Proceedings of World Environmental and Water Resources Congress 2009 - World Environmental and Water Resources Congress 2009: Great Rivers
This paper summarizes research from separate studies of fish passage over weirs (Larson et al., 2004; Litvan, 2006; Litvan, et al., 2008a-c) and weir hydraulics (Papanicolaou and Dermisis, 2006; Papanicolaou and Dermisis, in press). Channel incision in the deep loess region of western Iowa has caused decreased biodiversity because streams...
Quantifying uncertainty in discharge measurements: A new approach
J.E. Kiang, T.A. Cohn, R.R. Mason
2009, Conference Paper, Proceedings of World Environmental and Water Resources Congress 2009 - World Environmental and Water Resources Congress 2009: Great Rivers
The accuracy of discharge measurements using velocity meters and the velocity-area method is typically assessed based on empirical studies that may not correspond to conditions encountered in practice. In this paper, a statistical approach for assessing uncertainty based on interpolated variance estimation (IVE) is introduced. The IVE method quantifies all...
Combining particle-tracking and geochemical data to assess public supply well vulnerability to arsenic and uranium
S.R. Hinkle, L. J. Kauffman, M.A. Thomas, C. J. Brown, K. A. McCarthy, S. M. Eberts, Michael R. Rosen, B. G. Katz
2009, Journal of Hydrology (376) 132-142
Flow-model particle-tracking results and geochemical data from seven study areas across the United States were analyzed using three statistical methods to test the hypothesis that these variables can successfully be used to assess public supply well vulnerability to arsenic and uranium. Principal components analysis indicated that arsenic and uranium concentrations...
Effects of introduced fish on macroinvertebrate communities in historically fishless headwater and kettle lakes
Emily Gaenzle Schilling, Cynthia S. Loftin, Alexander D. Huryn
2009, Biological Conservation (142) 3030-3038
Widespread fish introductions have led to a worldwide decline in the number of fishless lakes and their associated communities. Studies assessing effects of fish stocking on native communities in historically fishless lakes have been limited to high-elevation headwater lakes stocked with non-native trout. Little is known about the effect of...
Elevated naturally occurring arsenic in a semiarid oxidizing system, Southern High Plains aquifer, Texas, USA
Bridget R. Scanlon, J.-P. Nicot, R.C. Reedy, D. Kurtzman, A. Mukherjee, D. Kirk Nordstrom
2009, Applied Geochemistry (24) 2061-2071
High groundwater As concentrations in oxidizing systems are generally associated with As adsorption onto hydrous metal (Al, Fe or Mn) oxides and mobilization with increased pH. The objective of this study was to evaluate the distribution, sources and mobilization mechanisms of As in the Southern High Plains (SHP) aquifer, Texas,...
New Permian durhaminid cerioid corals from east-central California
C.H. Stevens, P. Stone
2009, Journal of Paleontology (83) 946-953
Permian colonial corals from Artinskian to Kungurian strata in the Conglomerate Mesa area, Inyo Mountains, east-central California, include five new species, one of which is assigned to a new genus. The new taxa are: Malpaisia maceyi n. gen. and n. sp., Pararachnastraea bellula n. sp., P. delicata n. sp., P....
Windthrow and salvage logging in an old-growth hemlock-northern hardwoods forest
K.D. Lang, L.A. Schulte, G.R. Guntenspergen
2009, Forest Ecology and Management (259) 56-64
Although the initial response to salvage (also known as, post-disturbance or sanitary) logging is known to vary among system components, little is known about longer term forest recovery. We examine forest overstory, understory, soil, and microtopographic response 25 years after a 1977 severe wind disturbance on the Flambeau River State...
Incised channel fills containing conifers indicate that seasonally dry vegetation dominated Pennsylvanian tropical lowlands
H. J. Falcon-Lang, W.J. Nelson, S. Elrick, C.V. Looy, P.R. Ames, William A. DiMichele
2009, Geology (37) 923-926
The idea that the Pennsylvanian tropical lowlands were temporally dominated by rainforest (i.e., the Coal Forest) is deeply ingrained in the literature. Here we challenge two centuries of research by suggesting that this concept is based on a taphonomic artifact, and that seasonally dry vegetation dominated instead. This controversial finding...
