192 research outputs found
Surficial Geologic Map of the Flaherty 7.5-Minute Quadrangle, Kentucky
The Flaherty 7.5-minute quadrangle is located southwest of Louisville and northwest of Elizabethtown along the boundary between Hardin and Meade Counties. The quadrangle includes mostly the Pennyroyal region of the Mississippian Plateau and also smaller areas of the Mammoth Cave plateau and the highly dissected Dripping Springs escarpment in the western half of the map area (McDowell, 1986). Topography is mostly characterized by pervasive
sinkhole development in a lower elevation and low-relief plain, and high-relief plateaus, ridges, and knobs of the Dripping Springs escarpment scattered along the west side of the quadrangle. Swadley (1963) mapped the bedrock geology of the quadrangle, which was later digitized by Crawford (2002). Mississippian bedrock is exposed throughout the quadrangle and is cut by several normal faults in the south. The St. Louis Limestone and overlying Ste. Genevieve Limestone are the oldest and lowest (stratigraphy and elevation) map units in Flaherty, and underlie the Pennyroyal region. The higher elevation landforms characterizing the Dripping Springs escarpment are predominantly underlain by the Paoli Limestone, Beaver Bend Limestone, and Sample Sandstone, from oldest to youngest respectively. The Mooretown Formation is stratigraphically above the Paoli Limestone and below the Beaver Bend Limestone, and is only exposed along Sand Ridge, a prominent landform in the quadrangle trending northeast to southwest. Previously mapped surficial deposits include alluvium in Otter Creek, Flippin Creek, and a large karst basin, and “slumped sandstone” (colluvium) along Sand Ridge and other smaller areas throughout the quadrangle (Swadley, 1963)
Surficial Geologic Map of the Big Clifty 7.5-Minute Quadrangle, Kentucky
The Big Clifty 7.5-minute quadrangle is located south of Louisville and west of Elizabethtown along the boundary between Hardin and Grayson Counties. The quadrangle lies within the Mammoth Cave plateau of the Mississippian Plateau physiographic region (McDowell, 1986). Topography is characterized by a low relief plain sitting at elevations between 650 to 850 ft above sea level, which is dissected and incised by Rough River, Meeting Creek, Clifty Creek, and their tributaries to below 500 ft. Swadley (1962) mapped the bedrock geology of the quadrangle, which was later digitized by Conley (2002). Mississippian bedrock is exposed throughout the quadrangle and is cut by several vertical faults in the southeast. The oldest bedrock units include the Beaver Bend and Paoli Limestones, Sample Sandstone, and Reelsville Limestone from oldest to youngest, respectively, and are exposed in the lowest sections of river valleys on the west side of the quadrangle. The Golconda Formation (Beech Creek Limestone, Big Clifty Sandstone, and Haney Limestone Members) is primarily exposed along steep slopes of those same river valleys, which lead up to the top of the plateau. The majority of the broad Mammoth Cave plateau is underlain by Hardinsburg Sandstone with local exposures of Glen Dean Limestone and Leitchfield Formation occurring in the southwest corner of the quadrangle. Previously mapped surficial deposits include scattered areas of alluvium in Meeting Creek, Little Meeting Creek, and Clifty Creek (Swadley, 1962)
Surficial Geologic Map of the Summit 7.5-Minute Quadrangle, Kentucky
The Summit 7.5-minute quadrangle is located south of Louisville and west of Elizabethtown along the boundary between Hardin and Grayson Counties and within the Mississippian Plateau physiographic region (McDowell, 1986). Topography is characterized by the low relief Pennyroyal region that sits at elevations between 560 to 650 ft above sea level, the low relief Mammoth Cave plateau at elevations between 750 to 900 ft, and the steep Dripping Springs escarpment that separates the two plains. Moore (1964) mapped the bedrock geology of the quadrangle, which was later digitized by Conley (2002). Mississippian bedrock is exposed throughout the quadrangle and is cut by several vertical faults. The St. Louis Limestone and overlying Ste. Genevieve Limestone underlie the Pennyroyal region and are the oldest bedrock units in the quadrangle. The Beaver Bend and Paoli Limestones, Sample Sandstone, Reelsville Limestone, and Beech Creek Limestone Member of the Golconda Formation are exposed along the Dripping Springs escarpment. The Mammoth Cave plateau region is underlain by the Big Clifty Sandstone and, locally, Haney Limestone Members of the Golconda Formation east of the Summit Fault, and Hardinsburg Sandstone west of the fault. Previously mapped surficial deposits include minor areas of alluvium in tributaries across the Summit quadrangle, and areas of “slumped sandstone” (colluvium) in the Pennyroyal region (Moore, 1964)
Surficial Geologic Map of the Millerstown 7.5-Minute Quadrangle, Kentucky
The Millerstown 7.5-minute quadrangle is located south of Louisville and southwest of Elizabethtown along the boundaries between Hardin, Grayson, and Hart Counties and within the Mississippian Plateau physiographic region (McDowell, 1986). Topography is characterized by the low relief Pennyroyal plain that sits at altitudes below about 650 ft above sea level, the low relief Mammoth Cave plateau at altitudes above about 650 ft, and steep slopes of and isolated knobs of the incised Dripping Springs escarpment that separates the two plains. Moore (1965) mapped the bedrock geology of the quadrangle, which was later digitized by Johnson (2006). Mississippian bedrock and local areas of Pennsylvanian bedrock are exposed throughout most of the quadrangle, all, of which, are cut by several vertical faults. The Ste. Genevieve Limestone is the oldest lithology and underlies the Pennyroyal region in the northeast and southwest corners of the quadrangle, and locally along the Nolin River. The Beaver Bend Limestone, Mooretown Formation, Paoli Limestone, Sample Sandstone, and Reelsville Limestone stratigraphic sequence underlie most of the remaining Pennyroyal plain and several steep slopes of the Dripping Springs escarpment. The Beech Creek Limestone, Big Clifty Sandstone, and Haney Limestone Members of the Golconda Formation are exposed along the Dripping Springs escarpment the edges of the Mammoth Cave plateau region. Most of the Mammoth Cave plateau is underlain by the Hardinsburg Limestone, and, locally in the southwest corner of the quadrangle, the Glen Dean Limestone, Leitchfield Formation, and Pennsylvanian Caseyville Formation. Previously mapped surficial deposits include minor areas of alluvium in tributaries across the Millerstown quadrangle (Moore, 1964)
Biological Effects and Chemical Measurements in Irish Marine Waters
The overall aim of this project was to increase Ireland’s capacity for the generation of integrated monitoring of biological effects and chemical measurement data and for the completion of a pilot scale assessment of the quality of the Irish marine environment at a number of selected locations.Sea Change Strategy with the support of the Marine Institute and the Marine Research Sub Programme of the National Development Plan 2007-2013, and funding from the Environmental Protection Agency (EPA
Integration of biological effects, fish histopathology and contaminant measurements for the assessment of fish health: A pilot application in Irish marine waters
This study investigates the use of a weight of evidence (WOE) approach to evaluate fish health status and biological effects (BEs) of contaminants for assessment of ecosystem health and discusses its potential application in support of the Marine Strategy Framework Directive (MSFD). External fish disease, liver histopathology and several BEs of contaminant exposure including 7-ethoxy resorufin O-de-ethylase (EROD), acetylcholinesterase (AChE), bile metabolites, vitellogenin (VTG) and alkali labile phosphates (ALP) were measured in two flatfish species from four locations in Ireland. Contaminant levels in fish were generally low with PCBs in fish liver below OSPAR environmental assessment criteria (EAC). There were consistencies with low PCB levels, EROD and PAH bile metabolite levels detected in fish. Dab from Cork, Dublin and Shannon had the highest relative prevalence of liver lesions associated with the carcinogenic pathway. An integrated biomarker response (IBR) showed promise to be useful for evaluation of environmental risk, although more contaminant parameters in liver are required for a full assessment with the present study
Brain health : risk, resilience and reserve research
Research on brain health is imperative as we consider increasing life expectancy and the increasing prevalence of cognitive decline with advancing age. Risk and protective lifestyle factors driving brain health and reduced risk of cognitive decline have been identified (Livingston et al., 2020), but we have yet to fully understand all factors and contexts that contribute to observed variability in brain health outcomes (Boyle et al., 2018; Stern et al., 2020). This Research Topic, Brain Health: Risk, Resilience, and Reserve, provides insight into current trends and perspectives on the promotion of brain health across the lifespan, with a helpful focus on how research might be translated into recommendations for practice. The articles included in this Research Topic advance our understanding on topics such as cognitive reserve, brain reserve, resilience, and brain health
KSHV infection drives poorly cytotoxic CD56-negative natural killer cell differentiation in vivo upon KSHV/EBV dual infection
Funding Information: This research was supported in part by Cancer Research Switzerland , Switzerland ( KFS-4091-02-2017 ); KFSP-PrecisionMS and HMZ ImmunoTargET of the University of Zurich , Switzerland; the Cancer Research Center Zurich , Switzerland; the Vontobel Foundation , Switzerland; the Baugarten Foundation , Switzerland; the Sobek Foundation , Germany; the Swiss Vaccine Research Institute , Switzerland; Roche , Switzerland; Novartis , Switzerland; and the Swiss National Science Foundation , Switzerland ( 310030B_182827 and CRSII5_180323 ). A.M.M. was funded by a National Institutes of Health , United States, grant ( R01 CA189806 ). N.C. was supported by a career advancement grant from the University of Zurich , Switzerland ( FK-18-026 ). D.M. and M.B. were supported by MD-PhD fellowships from the Swiss National Science Foundation , Switzerland, and the Swiss Academy of Medical Sciences , Switzerland ( 323530_145247 and 323630_19938 ).Peer reviewedPublisher PD
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Wildfire exposure and fuel management on western US national forests
Substantial investments in fuel management activities on national forests in the western US are part of a national strategy to reduce human and ecological losses from catastrophic wildfire and create fire resilient landscapes. Prioritizing these investments within and among national forests remains a challenge, partly because a comprehensive assessment that establishes the current wildfire risk and exposure does not exist, making it difficult to identify national priorities and target specific areas for fuel management. To gain a broader understanding of wildfire exposure in the national forest system, we analyzed an array of simulated and empirical data on wildfire activity and fuel treatment investments on the 82 western US national forests. We first summarized recent fire data to examine variation among the Forests in ignition frequency and burned area in relation to investments in fuel reduction treatments. We then used simulation modeling to analyze fine-scale spatial variation in burn probability and intensity. We also estimated the probability of a mega-fire event on each of the Forests, and the transmission of fires ignited on national forests to the surrounding urban interface. The analysis showed a good correspondence between recent area burned and predictions from the simulation models. The modeling also illustrated the magnitude of the variation in both burn probability and intensity among and within Forests. Simulated burn probabilities in most instances were lower than historical, reflecting fire exclusion on many national forests. Simulated wildfire transmission from national forests to the urban interface was highly variable among the Forests. We discuss how the results of the study can be used to prioritize investments in hazardous fuel reduction within a comprehensive multi-scale risk management framework.Keywords: Risk assessment, Wildfire exposure, Wildfire risk, Burn probability, National fores
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