Use Of Lidar-Derived Terrain And Vegetation Information In A Deciduous Forest In Kentucky,
2015
University of Kentucky
Use Of Lidar-Derived Terrain And Vegetation Information In A Deciduous Forest In Kentucky, Wesley A. Staats
Theses and Dissertations--Forestry and Natural Resources
The use of Light Detection and Ranging (LiDAR) information is gaining popularity, however its use has been limited in deciduous forests. This thesis describes two studies using LiDAR data in an Eastern Kentucky deciduous forest. The first study quantifies vertical error of LiDAR derived digital elevation models (DEMs) which describe the forests terrain. The study uses a new method which eliminates Global Positioning System (GPS) error. The study found that slope and slope variability both significantly affect DEM error and should be taken in to account when using LiDAR derived DEMs. The second study uses LiDAR derived forest vegetation and …
Earthworm Populations In A Wheat-Soybean Double-Crop System Under Seven Years Of Established Residue Management Practices,
2015
University of Arkansas, Fayetteville
Earthworm Populations In A Wheat-Soybean Double-Crop System Under Seven Years Of Established Residue Management Practices, Jill Thomason, Mary Savin, Kristofor Brye, Donn T. Johnson
Discovery, The Student Journal of Dale Bumpers College of Agricultural, Food and Life Sciences
Earthworms improve soil structure, distribute litter and microbes, stimulate microbial activity, facilitate decomposition, and increase nitrogen (N) availability for plant growth. Earthworm density is often reduced in low organic matter soils that are intensively managed to grow row crops. This study was designed to relate earthworm density and community composition to residue management after seven years of established management practices in a wheat (Triticum aestivum L.)-soybean (Glycine max (L.) Merr.) double-crop system maintained in Marianna, Ark. Residue management practices included conventional tillage (CT) and no-tillage (NT), N fertilization to produce high and low wheat residue amounts left in the field, …
A Gis Assessment Of Ecoregion Representation In Chile's Existing And Proposed Integrated Network Of Protected Areas,
2015
University of Montana
A Gis Assessment Of Ecoregion Representation In Chile's Existing And Proposed Integrated Network Of Protected Areas, Jessica Schutz
Graduate Student Theses, Dissertations, & Professional Papers
Chile's state designated protected areas are reported to show representation bias and to be unable to meet conservation goals. Private protected areas are considered an important tool to resolve these issues, which has led to support for increasing the role of private protected areas in Chile and creating an integrated public-private protected area network. But the validity of the capacity of private protected areas to fix Chile's state protected area network bias, and the advantage of creating an integrated protected area network, have not been assessed. This study uses the most recent data on Chile's state, private, and international protected …
Exploratory Study Of Seasonal Indoor Bioaerosols And The Associated Health Outcomes In Low-Income Communities In El Paso, Texas, 2014,
2015
University of Texas at El Paso
Exploratory Study Of Seasonal Indoor Bioaerosols And The Associated Health Outcomes In Low-Income Communities In El Paso, Texas, 2014, Eric Martinez
Open Access Theses & Dissertations
Introduction: Structural degradation, moisture levels, and building failures can influence poor indoor air quality and create a good environment for bioaerosols. People spend much of their time indoors and can potentially be exposed to these bioaerosols. Several studies have correlated exposures to high concentrations of bioaerosols to various health problems, severe allergies, asthma, or other respiratory illness. Objectives: The objectives of this study are to describe bioaerosol concentrations, meteorological factors, and health outcomes during the summer and fall seasons; characterize bioaerosols (bacteria and fungi) collected in low-income communities; compare bioaerosol concentrations by season; compare meteorological factors to bioaerosol concentrations by …
Acknowledgment Of Supporters,
2015
University of New Mexico
Acknowledgment Of Supporters, Utton Center, University Of New Mexico - School Of Law
Water Matters!
List of supporters.
Multipoint Spectroscopy And Stereoscopic Imaging Of Pharmaceutical Particles,
2015
Technological University Dublin
Multipoint Spectroscopy And Stereoscopic Imaging Of Pharmaceutical Particles, Hicham Rifai
Masters
Particle and granule properties play a key role in the final product quality of pharmaceuticals. Thus the identification and monitoring of key chemical and physical parameters is essential in the production of pharmaceuticals. The existing off-line methods are generally slow and labour intensive. Near infra-red (NIR) multipoint spectroscopy and image analysis are an attractive alternative compared to the traditional methods because they are both nondestructive and non-interfering allowing the analysis in real time of particles physical and chemical properties. This research is a preliminary study performed at laboratory scale and aims at developing chemometric and imaging algorithms for real time …
Are Religion And Environmentalism Complements Or Substitutes?: A Club-Based Approach,
2015
Old Dominion University
Are Religion And Environmentalism Complements Or Substitutes?: A Club-Based Approach, Feler Bose, Timothy M. Komarek
Economics Faculty Publications
In this article, we analyze the causal link between membership in environmental groups and active participation and membership in religious groups. We use a club-based model and employ OLS and spatial econometrics with controls to test for whether membership and participation in a religious group is a substitute or complement for membership in environmental groups. Instrumental variables estimation was used as a robustness check. We found that religious participation and religious membership in evangelical groups are a substitute for environmental membership. Much of the work on environmental concerns has focused on answers to survey questions, not on membership. We used …
Does Low-Level Arsenic Exposure Predict Blood Pressure In Children?,
2015
University of Texas at El Paso
Does Low-Level Arsenic Exposure Predict Blood Pressure In Children?, Tania Angelica Mayorga
Open Access Theses & Dissertations
Background & Significance: Inorganic arsenic is a heavy metal naturally found in soil and human exposure to this heavy metal causes adverse effects. Exposure risks are particularly high in developing children. Arsenic is mainly found in bedrock. It is also a by-product of smelting, it is used in cement production, and historically is has been found in crop pesticides. Among other ill-effects, arsenic exposure in humans can cause respiratory diseases, peripheral neuropathy and liver fibrosis. In particular arsenic has been shown in many studies to be a contributing factor in the risk for hypertension in adults however no studies have …
The Impacts Of Health Status And Exposure To Environmental Toxins On Children's Grade Point Average In El Paso, Texas,
2015
University of Texas at El Paso
The Impacts Of Health Status And Exposure To Environmental Toxins On Children's Grade Point Average In El Paso, Texas, Stephanie Elizabeth Clark
Open Access Theses & Dissertations
Studies in the US have found that both exposure to environmental toxins and children's general health status negatively impact children's academic achievement. This Thesis will be made of up two papers. The first examines the impact of exposure to residential air toxins from a variety of sources on student's academic achievement and the second paper incorporates a measure of children's general health status into the statistical model from the first paper. This Thesis employs National Air Toxics Assessment (NATA) risk estimates from a variety of sources and individual-level data collected through a mail survey of fourth and fifth grade school …
A Qualitative Analysis Of Migrant Women Farmworkers' A Qualit Ative Analysis Of Migrant Women Farmworkers’ Perceptions Of Maternal Care Management,
2015
Walden University
A Qualitative Analysis Of Migrant Women Farmworkers' A Qualit Ative Analysis Of Migrant Women Farmworkers’ Perceptions Of Maternal Care Management, Stacey A. Pilling
Walden Dissertations and Doctoral Studies
The purpose of this phenomenological study was to examine migrant women farmworkers' views of perinatal care management while working in the fields. Like men, women migrant farmworkers are exposed to many physical, chemical, and biological hazards that pose human health risks. However, women of childbearing age are at an increased risk of having reproductive health difficulties and adverse pregnancy outcomes, and the infant mortality rate among migrant farmworkers is estimated to be twice the national average. Perinatal care is a critical factor in reducing adverse outcomes for perinatal and newborn mortality. Face-to-face interviews were conducted with 15 migrant women farmworkers …
Cover Crops And Ecosystem Services: Insights From Studies In Temperate Soils,
2015
University of Nebraska-Lincoln
Cover Crops And Ecosystem Services: Insights From Studies In Temperate Soils, Humberto Blanco-Canqui, Tim M. Shaver, John L. Lindquist, Charles A. Shapiro, Roger Wesley Elmore, Charles A. Francis, Gary W. Hergert
Department of Agronomy and Horticulture: Faculty Publications
Cover crops (CCs) can provide multiple soil, agricultural production, and environmental benefits. However, a better understanding of such potential ecosystem services is needed. We summarized the current state of knowledge of CC effects on soil C stocks, soil erosion, physical properties, soil water, nutrients, microbial properties, weed control, crop yields, expanded uses, and economics and highlighted research needs. Our review indicates that CCs are multifunctional. Cover crops increase soil organic C stocks (0.1–1 Mg ha–1 yr–1) with the magnitude depending on biomass amount, years in CCs, and initial soil C level. Runoff loss can decrease by up …
Effect Of Neighborhood Features On Bmi Of African American Adolescents In South Los Angeles,
2015
Walden University
Effect Of Neighborhood Features On Bmi Of African American Adolescents In South Los Angeles, Francisca Omelogo Obiora
Walden Dissertations and Doctoral Studies
Childhood obesity is a major national and worldwide public health crisis. The occurrence of childhood obesity, caused to large extent by an imbalance between caloric intake and caloric expenditure, has increased in the last 30 years. Although the prevalence of obesity has stabilized in recent years, it remains a top public health concern in the United States, especially in urban centers. The purpose of this study was to examine the associations between diet, physical activity, and the built environment in relation to the mean body mass index (BMI) of adolescents aged 12 to 17 years living in South Los Angeles, …
The Space Debris Environment And Satellite Manufacturing,
2015
Walden University
The Space Debris Environment And Satellite Manufacturing, Walter Tam
Walden Dissertations and Doctoral Studies
Space debris is a growing threat to operational satellites and satellite manufacturing organizations. Leaders in satellite manufacturing organizations lacking adequate knowledge on the space debris risks could be at a competitive disadvantage. The purpose of this explorative case study was to explore strategies leaders in satellite manufacturing organizations use to mitigate risks through the conceptual lens of stakeholder theory, contingency theory, and general system theory. The research questions addressed strategies to mitigate the debris threat from the perspectives of both ongoing concerns and long-term risk resolution. Data were collected via in-depth interviews with 12 leaders, purposively selected, in satellite manufacturing …
Evaluating And Prioritizing Stream Restoration In Mined Appalachian Watersheds.,
2015
West Virginia University
Evaluating And Prioritizing Stream Restoration In Mined Appalachian Watersheds., Eric Mitchell Miller
Graduate Theses, Dissertations, and Problem Reports (ETD)
The state of West Virginia requires stream mitigation to offset anthropogenic impacts to streams; consequently there is a high concentration of mitigation projects in the mountaintop mining/valley fill region. Projects are typically outside mine boundaries and sites are selected at the discretion of the West Virginia Department of Environmental Protection. This dissertation evaluated current in-stream, natural channel design (NCD) structures and prioritized future project locations. First, we assessed the Little Coal River, which is one of the largest physical restoration projects in the state. The Little Coal drains 994 km2 with extensive historic and contemporary coal mining. The objectives of …
Heavy Metal Uptake By Four Plant Species: Radish, Indian Mustard, Corn, And Soybean.,
2015
West Virginia University
Heavy Metal Uptake By Four Plant Species: Radish, Indian Mustard, Corn, And Soybean., Oluwasogo Bolaji Alonge
Graduate Theses, Dissertations, and Problem Reports (ETD)
Metal contaminated soils are a problem throughout the world. Because metals accumulate in the food chain they have been linked to adverse human and ecosystem health. One promising approach to remediating metal contaminated soils is phytoremediation but success has been limited by an incomplete understanding of the factors that control metal uptake by plants, including the effects when more than one contaminant metal is present in the system. Metal contaminated soil for this study was collected from near Spelter in Harrison County WV, the site of a former zinc smelting site that has contaminated residential soils and stream sediments with …
The Future Of Squaw Valley And Alpine Meadows,
2015
Pomona College
The Future Of Squaw Valley And Alpine Meadows, Brian Friel
Pomona Senior Theses
This paper examines the ongoing conflict between Squaw Valley Ski Holdings and the local Tahoe community and analyzes this conflict within the greater historical context of ski resort consolidation and development across the Western United States.
Reforestation, Renewal, And The Cost Of Coal: Opposing A Manichean Worldview In Central Appalachia,
2015
Pomona College
Reforestation, Renewal, And The Cost Of Coal: Opposing A Manichean Worldview In Central Appalachia, Elizabeth R. Hansen
Pomona Senior Theses
Surface coal mining is a major form of land change and environmental degradation in Central Appalachia. Traditional mine reclamation iresults in unmanaged, unproductive grasslands that fail to mitigate many of the environmental costs of coal mining and are of minimal use to communities. Forestry reclamation is an alternative reclamation tactic that has the potential to address both environmental and socioeconomic concerns in Central Appalachia. A case study of Laurel Fork Mine in Eastern Kentucky is included.
Gis Analysis Of Brownfield Sites In The City Of Minneapolis,
2015
Minnesota State University - Mankato
Gis Analysis Of Brownfield Sites In The City Of Minneapolis, Shreya Vaidya
All Graduate Theses, Dissertations, and Other Capstone Projects
Brownfield sites have many negative ramifications on a local area which includes loss of economy, decline in land use value and potential hazard to human health and the environment. Despite the efforts on redeveloping brownfields, Minnesota Pollution Control Agency (MPCA) claims that over 10,000 known contaminated or potentially contaminated sites remain across Minnesota and thousands are likely to exist but have not been identified and recorded. The objectives of this study are to map the brownfield sites in Minneapolis based on the information provided by the regulatory sources and to categorize and analyze all the sites on the basis of …
Selective Solid Phase Extraction Of Uranium Using An Aminophosphonic Acid Functionalized Composite Material,
2015
University of Montana
Selective Solid Phase Extraction Of Uranium Using An Aminophosphonic Acid Functionalized Composite Material, Ranalda Tsosie
Graduate Student Theses, Dissertations, & Professional Papers
Uranium is an element of interest because it is an abundant source of concentrated energy. In 1948 the US offered money for uranium ore mined in the US, which created a mining boom in the southwest that included the Navajo Reservation. During the late 1960s the demand for uranium decreased and many mining operations shutdown and left behind a legacy of contamination. As a result many Navajo communities have numerous water sources that exceed established maximum contamination levels for uranium and other toxic metals. These contaminations are a direct result of abandoned Cold War uranium mines and mill waste sites …
Computational Development Of Selective Nnos Inhibitors: Binding Modes And Pharmacokinetic Considerations,
2015
National University of Ireland, Maynooth
Computational Development Of Selective Nnos Inhibitors: Binding Modes And Pharmacokinetic Considerations, Adam Curtin, Gemma K. Kinsella, John Stephens
Articles
Abstract: Neuronal nitric oxide synthase (nNOS) produces the key signalling mediator nitric oxide, (NO). This gaseous, free radical molecule modulates a vast array of biological processes, from vascular pressure to immune responses and neurological signalling cascades. Overproduction of NO has been implicated in conditions including Alzheimer’s disease, Parkinson’s disease and schizophrenia. Inhibition of nNOS therefore offers a potential therapeutic approach for treatment of these conditions. This endeavour is made more complex by the fact that there are two other isoforms of nitric oxide synthase (NOS), endothelial NOS (eNOS) and inducible NOS (iNOS). The selectivity of nNOS inhibitors is therefore a …
