Surface And Subsurface Application Of Chemical Dispersants And Associated Ecosystem Impacts, 2015 University of San Francisco
Surface And Subsurface Application Of Chemical Dispersants And Associated Ecosystem Impacts, Adam V. Radpour
Chemical dispersants are applied to spilled oil in marine environments when other, less controversial, methods are not adequate for the incident. They are considered to be a response method as opposed to a direct cleanup method, with the intended goals of reducing risk of exposure to sensitive shorelines, reducing environmental injury to surface-dwelling sea birds and marine mammals, and facilitating the biodegradation of spilled oil into the water column.
For this research, both surface and subsurface application of dispersants were evaluated in terms of oil characteristics and volume, and oceanic and atmospheric conditions. More data exists to support the effectiveness ...
A Geospatial Analysis Of Norovirus Outbreaks In California, And An Investigation Of The Impact Of Environmental Variables, 2015 University of San Francisco
A Geospatial Analysis Of Norovirus Outbreaks In California, And An Investigation Of The Impact Of Environmental Variables, Alexandra Groen
Previous studies and empirical evidence suggest norovirus outbreaks in California exhibit correlation with environmental variables and exhibit spatial spread patterns. Few studies have been done looking at what causes norovirus seasonality in temperate climates and more research is needed on the regional level. This study aims to find what relationships exist with outbreak occurrence and environmental variables in California, as well as any spatial patterns of spread or clustering of outbreaks. Spatial analysis tools were used to find any relationships between California norovirus outbreak data and environmental variables. The results showed a south to north spread of outbreaks in California ...
Acute Toxicity Of Β-N-Methylamino-L-Alanine (Bmaa) To Fathead Minnow (Pimephales Promelas) And Zebrafish (Danio Rerio), 2015 University of Nebraska-Lincoln
Acute Toxicity Of Β-N-Methylamino-L-Alanine (Bmaa) To Fathead Minnow (Pimephales Promelas) And Zebrafish (Danio Rerio), Jiayi Wang
Dissertations & Theses in Natural Resources
β-N-methylamino-L-alanine (BMAA) is a neurotoxic amino acid produced by most species of cyanobacteria. Exposure to BMAA has been hypothesized as a cause of ALS and possibly Parkinson’s and Alzheimer’s diseases for several decades. Both in vitro and in vivo experiments revealed that exposure to elevated concentrations of BMAA can damage motor neurons and cause motor dysfunctions. However, the exact mechanism of BMAA-induced neurotoxicity has not been well understood.
Based on the available literature and in spite of its water-soluble and non-protein nature, BMAA appears to be able to bioaccumulate in organisms. The ubiquity of cyanobacteria and the potential ...
Mohammed Madai: Significance Of The Earth Day, 2015 Ubuntu Institute of Social Justice
Mohammed Madai: Significance Of The Earth Day, Ubuntu Institute Students
Ubuntu Institute Students
One may ask himself: What is the significance of Earth Day? Mohammed Madai explores the significance of this day to our daily lives
How Does The Exploitation And Degradation Of Finite Natural Resources By Industrial Oil Producers Effect Our Future Planetary Environment?, Zachary J. King Mr.
Symposium of Student Scholars
26 March 2015
The purpose of this presentation is to communicate content of the reports given by credible institution on the degradation and exploitation of finite natural resources by corporate institutions, for short term financial gain, and how it will effect the future planetary environment. Methods used in obtaining this research range from point source observation directly from oil spills in the Gulf or pipe leaks in the Mid-West, to analytical and numerical data quantifications gathered over a period of two decades. This presentation encompasses a wide scope of information concerning the way ...
Effect Of Fibre Blend Ratios On Yarn Properties, 2015 Innovative Research Publications
Effect Of Fibre Blend Ratios On Yarn Properties, Innovative Research Publications Irp India, A. Ghosh, M. Raihan
Innovative Research Publications IRP India
Yarn properties can be altered through blending fibres. According to the requirement different properties can be achieved by different blending ratios. Among the different blends cotton and polyester, cotton and wool, wool and acrylic, cotton and nylon, jute and acrylic, cotton and rayon etc are common. Flax and polyester has been a popular blend now-adays and depicts excellent properties than their individual yarn properties. Different proportion of flax and polyester has been tested to observe the yarn properties and it is found that polyester was perfectly fits with low proportion of flax. Their blends with specific ratios exhibit excellent properties ...
Study On The Demolition Waste Management In Malaysia Construction Industry, 2015 Innovative Research Publications
Study On The Demolition Waste Management In Malaysia Construction Industry, Innovative Research Publications Irp India, Gunalaan Vasudevan
Innovative Research Publications IRP India
The Malaysia construction industry generates a large quantity of construction and demolition waste nowadays. In the handbook for demolition work only comprised small portion of demolition waste management. It is important to study and determine the ways to provide a practical guide for the professional in the building industry about handling the demolition waste. In general, demolition defined as tearing down or wrecking of structural work or architectural work of the building and other infrastructures work such as road, bridge and etc. It’s a common misconception that demolition is nothing more than taking down a structure and carrying the ...
Optimisation Of Isolation Methods For The Aza Group Of Marine Biotoxins And The Development Of Accurate And Precise Methods Of Analysis, 2015 Dublin Institute of Technology
Optimisation Of Isolation Methods For The Aza Group Of Marine Biotoxins And The Development Of Accurate And Precise Methods Of Analysis, Jane Kilcoyne [Thesis]
The two main groups of biotoxins which affect the Irish shellfish industry are azaspiracids (AZAs) and the okadaic acid (OA) group (OA, DTX2, DTX1 and their esters) toxins. Since AZAs were first identified in 1998, well over 30 analogues have been reported. Structural and toxicological data have been described for AZA1–5 (isolated from shellfish). LC-MS/MS is the EU reference method for detection of the AZAs (AZA1, -2 and -3) and the OA group toxins in raw shellfish with the regulatory limit set at 160 μg/kg for each toxin group. Limited supplies of purified toxins for certified reference ...
Increasing Expression Of Hepatitis B Surface Antigen In Maize Through Breeding, 2015 California Polytechnic State University - San Luis Obispo
Increasing Expression Of Hepatitis B Surface Antigen In Maize Through Breeding, Erin Suzanne Miller
Master's Theses and Project Reports
The hepatitis B virus (HBV) is a common virus, with two billion people infected worldwide. It causes approximately 600,000 deaths each year, despite the availability of an effective vaccine since 1982. Maize as a platform for oral vaccination can supply a heat stable vaccine, which does not require syringes or trained personnel to administer. The Hepatitis B Surface antigen was transformed into maize and this seed was used to evaluate expression levels through the breeding process. The transgene was transferred into two elite maize inbreds by backcrossing. Highest expressing ears were selected each generation until approximately 99% commercial parent ...
Study On The Strategy Of Ghs System In Taiwan, 2015 Innovative Research Publications
Study On The Strategy Of Ghs System In Taiwan, Innovative Research Publications Irp India, Study On The Strategy Of Ghs System In Taiwan,Kun-Yuan Chuang,Jo-Ming Tseng,Teh-Sheng Su, Fang-Chen Lin
Innovative Research Publications IRP India
The “Globally Harmonized System of Classification and Labeling of Chemicals” (GHS) not only provides a unified system for dealing with the labeling of intrinsic materials and compound chemicals but also furnishes hazard information to the contingency personnel, work site workforce, transportation workforce and consumers for the prevention of acute and chronic health impairments as well as ecological hazards. Since 2008, the GHS has gradually been observed internationally to substitute the classification and labeling of hazardous substances, the Material Safety Data Sheet (MSDS), and relevant regulations on hazardous chemicals which are currently used by many countries; substantial influences have been seen ...
Concomitant Uptake Of Antimicrobials And Salmonella In Soil And Into Lettuce Following Wastewater Irrigation, 2015 University of Nebraska--Lincoln
Concomitant Uptake Of Antimicrobials And Salmonella In Soil And Into Lettuce Following Wastewater Irrigation, J. Brett Sallach, Yuping Zhang, Laurie Hodges, Daniel D. Snow, Xu Li, Shannon L. Bartelt-Hunt
Civil Engineering Faculty Publications
The use of wastewater for irrigation may introduce antimicrobials and human pathogens into the food supply through vegetative uptake. The objective of this study was to investigate the uptake of three antimicrobials and Salmonella in two lettuce cultivars. After repeated subirrigation with synthetic wastewater, lettuce leaves and soil were collected at three sequential harvests. The internalization frequency of Salmonella in lettuce was low. A soil horizon-influenced Salmonella concentration gradient was determined with concentrations in bottom soil 2 log CFU/g higher than in top soil. Lincomycin and sulfamethoxazole were recovered from lettuce leaves at concentrations as high as 822 ng ...
The Effects Of Environmental Prompts On Stair Usage, 2015 Tulane University
The Effects Of Environmental Prompts On Stair Usage, Lori Andersen, Tim Bungum, Sheniz Moonie Phd
Nevada Journal of Public Health
Experts have advocated exercise with little success, and have turned to encouraging physical activity by incorporating it into daily activities such as taking the stairs over elevators. Much literature exists suggesting that environmental prompts can encourage the use of stairs and literature has established that some messages may be more effective than others. This study aimed to assess the effects of selected signage prompts on stair usage. Methods: Stair and elevator use were monitored in three, two-story buildings. One building served as a control, while a fitness message was placed in another building, and the final building received a weight ...
Uncontrolled Combustion Of Shredded Tires In A Landfill - Part 2: Population Exposure, Public Health Response, And An Air Quality Index For Urban Fires, Ashish Singh, Scott N. Spak, Elizabeth A. Stone, Jared Downard, Robert L. Bullard, Mark Pooley, Pamela A. Kostle, Matthew W. Mainprize, Michael D. Wichman, Thomas M. Peters, Douglas Beardsley, Charles O. Stanier
Department of Chemical and Biochemical Engineering Publications
The Iowa City Landfill in eastern Iowa, United States, experienced a fire lasting 18 days in 2012, in which a drainage layer of over 1 million shredded tires burned, generating smoke that impacted the surrounding metropolitan area of 130,000 people. This emergency required air monitoring, risk assessment, dispersion modeling, and public notification. This paper quantifies the impact of the fire on local air quality and proposes a monitoring approach and an air quality index (AQI) for use in future tire fires and other urban fires. Individual fire pollutants are ranked for acute and cancer relative risks using hazard ratios ...
The Association Of Lead With Cataracts And Vision-Related Problems In Perimenopausal Women, 2015 Walden University
The Association Of Lead With Cataracts And Vision-Related Problems In Perimenopausal Women, Imogene Drakes
Dissertations and Doctoral Studies
Around the world, women are subject to an earlier incidence of cataracts, have a higher risk for cataracts, and also have a higher risk for other vision-related problems than men. Previous research has indicated an association between endogenous lead stored in long bones and cataracts in men over 60 years of age; however, a similar study in women did not reveal an association. This case control study was conducted to investigate whether perimenopausal mobilization of endogenous lead serves as a possible causative factor for women's generalized vision issues and cataract incidence in particular. Secondary data were gathered from 1 ...
Pesticide Concentrations In Frog Tissue And Wetland Habitats In A Landscape Dominated By Agriculture, 2015 United States Geological Survey
Pesticide Concentrations In Frog Tissue And Wetland Habitats In A Landscape Dominated By Agriculture, Kelly L. Smalling, Rebecca A. Reeves, Erin Muths, Mark Vandever, William A. Battaglin, Michelle L. Hladik, Clay L. Pierce
Natural Resource Ecology and Management Publications and Papers
Habitat loss and exposure to pesticides are likely primary factors contributing to amphibian decline in agricultural landscapes. Conservation efforts have attempted to restore wetlands lost through landscape modifications to reduce contaminant loads in surface waters and providing quality habitat to wildlife. The benefits of this increased wetland area, perhaps especially for amphibians, may be negated if habitat quality is insufficient to support persistent populations. We examined the presence of pesticides and nutrients in water and sediment as indicators of habitat quality and assessed the bioaccumulation of pesticides in the tissue of twonative amphibian species Pseudacris maculata (chorus frogs) and Lithobates ...
Impacts Of Consumer Horticulture On Stormwater And Nutrient Management: Investigating Public Perception, Knowledge, And Practices In The Shenandoah River Watershed, Christopher P. Parker
Masters Theses, 2014 -
The South Fork Shenandoah River is a tributary to the Chesapeake Bay that is a significant contributor to nitrogen and phosphorus that enter the Bay and leads to increased eutrophication. These nutrients also cause problems in the South Fork Shenandoah River. The United States Environmental Protection agency has implemented strict regulation to reduce nutrients entering the Bay by developing the Chesapeake Bay TMDL. While the TMDL has strict regulation on wastewater treatment, agriculture, and industry, there are still sources of nutrients entering the Bay through unregulated sources. Urban/suburban runoff is one of these sources, particularly runoff from home owner ...
Cross-Talk Between The Tumor Suppressors Par-4 And P53, 2015 University of Kentucky
Cross-Talk Between The Tumor Suppressors Par-4 And P53, Tripti Shrestha Bhattarai
Theses and Dissertations--Toxicology and Cancer Biology
This work describes the fascinating interplay between two tumor suppressors Prostate apoptosis response-4 (Par-4) and p53. The guardian of the genome, p53, is frequently mutated in human cancers, and may contribute to therapeutic resistance. However, p53 is intact and functional in normal tissues, and we observed that specific activation of p53 in normal fibroblasts could induce apoptosis selectively in p53-deficient cancer cells. This paracrine apoptotic effect was executed by Par-4 secreted in response to p53 activation. Accordingly, activation of p53 in wild-type mice, but not in p53-/- or Par-4-/- mice, caused systemic elevation of Par-4 that induced apoptosis of p53-deficient ...
Effects Of Hiv-1 Tat On The Enteric Nervous, 2015 Virginia Commonwealth University
Effects Of Hiv-1 Tat On The Enteric Nervous, Joy Ngwainmbi
Theses and Dissertations
More than 1.2 million people are estimated to be currently living with the human immunodeficiency virus (HIV) in the United States of America. The gastrointestinal (GI) tract is both a major target and an important component of HIV pathogenesis. The GI processes that are dysregulated during HIV infection are controlled by the enteric nervous system (ENS). Indeed, both clinical and experimental studies have implicated the ENS in HIV and simian immunodeficiency virus (SIV) pathogenesis. In addition to direct viral effects, the HIV virus also indirectly affects the GI tract via cellular and/or viral toxins released by infected cells ...
Raman Micro-Spectroscopy For Rapid Screening Of Oral Squamous Cell Carcinoma, 2015 Universidade do Vale do Paraiba, Brazil
Raman Micro-Spectroscopy For Rapid Screening Of Oral Squamous Cell Carcinoma, Luis Felipe Carvalho, Franck Bonnier, Kate O'Callaghan, Jeff O'Sullivan, Stephen Flint, Hugh J. Byrne, Fiona M. Lyng
Raman spectroscopy can provide a molecular-level fingerprint of the biochemical composition and structure of cells with excellent spatial resolution and could be useful to monitor changes in composition for dysplasia and early, non-invasive cancer diagnosis (carcinoma in situ), both ex-vivo and in vivo. In this study, we demonstrate this potential by collecting Raman spectra of nucleoli, nuclei and cytoplasm from oral epithelial cancer (SCC- 4) and dysplastic (pre-cancerous, DOK) cell lines and from normal oral epithelial primary cell cultures, in vitro, which were then analysed by principal component analysis (PCA) as a multivariate statistical method to discriminate the spectra. Results ...
Role Of Caveolin-1 And Nrf2 In Nutritional Modulation Of Pcb Toxicity, 2015 University of Kentucky
Role Of Caveolin-1 And Nrf2 In Nutritional Modulation Of Pcb Toxicity, Michael C. Petriello
Theses and Dissertations--Toxicology and Cancer Biology
Cardiovascular disease is the leading cause of mortality in Western societies and is linked to multiple modifiable risk factors including lifestyle choices. Emerging evidence implicates exposure to persistent environmental pollutants, such as polychlorinated biphenyls (PCBs), as a risk factor for the development or progression of cardiovascular disease. To reduce disease risks, it is critical to identify sensible means of biomedically reducing the toxicity of persistent organic pollutants and related environmental stressors.
First, we tested a hypothesis that endothelial cell inflammation and subsequent cardiovascular toxicity initiated by coplanar PCBs is modulated by the crosstalk between caveolae and Nuclear factor (erythroid-derived 2 ...