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Articles 2731 - 2760 of 6907
Full-Text Articles in Physical Sciences and Mathematics
Scwds Briefs: Volume 28, Number 2 (July 2012), Jeanenne Brewton, Michael J. Yabsley
Scwds Briefs: Volume 28, Number 2 (July 2012), Jeanenne Brewton, Michael J. Yabsley
Southeastern Cooperative Wildlife Disease Study: Publications
CWD News, July 2012
Does Heat + Drought = HD?
Cats on Candid Camera
Gray Bats and WNS
California or Bust
Recent SCWDS Publications Available
Nuclear Waste Policy Act: Where We've Been And Where We're Headed, Kevin Flournoy
Nuclear Waste Policy Act: Where We've Been And Where We're Headed, Kevin Flournoy
Physics
The Nuclear Waste Policy Act is analysed in its practical and political impact. A policy recommendation is made of greater state and regional autonomy of on-site waste storage.
Nevada Interagency Volunteer Program: Helping Hands Across Public Lands: Phase Ii: Period Covering April 1, 2012 To June 30, 2012, Margaret N. Rees
Nevada Interagency Volunteer Program: Helping Hands Across Public Lands: Phase Ii: Period Covering April 1, 2012 To June 30, 2012, Margaret N. Rees
Get Outdoors Nevada
- The number of records in the volunteer database increased by 14.4% over the last quarter. The database now contains 8,087 records.
- Results show an average of 956 visits per month, and an average of 3,015 pages viewed per month.
- Get Outdoors Nevada supplied 11 volunteer events in a variety of ways. These events utilized 388 volunteers who contributed approximately 1,351 hours of service.
- The team continues planning an alternative bus tour.
- The team is negotiating a media plan, to be rolled out in July.
- The IVP team has stated planning for the annual volunteer recognition banquet.
- One volunteer training was …
The Effects Of Biochar Age And Concentration On Soil Retention Of Phosphorus And Infiltration Rate, Emilie Schneider
The Effects Of Biochar Age And Concentration On Soil Retention Of Phosphorus And Infiltration Rate, Emilie Schneider
Natural Resources Management and Environmental Sciences
Changes in land use and land management practices are regarded as one of the main factors in altering the hydrogeological system, causing changes in runoff, surface supply yields, and the quality of receiving water (Tong and Chen, 2002). Phosphorus is a significant contributor to accelerated eutrophication of fresh water and is largely sourced from agricultural runoff (Sharpley et al., 1994). The dominant processes controlling solution composition in agricultural soils are primarily ‘chemical’ for P (i.e. adsorption/desorption and dissolution/precipitation) (Edwards and Withers, 1998). Biochar has chemical characteristics that have the potential to adsorb P or influence precipitation of P insoluble pools …
A Survey Of Seafood Traceability And Sustainability In The United States— Processes, Regulations, And Current Initiatives, Nancy A. Olsen
A Survey Of Seafood Traceability And Sustainability In The United States— Processes, Regulations, And Current Initiatives, Nancy A. Olsen
Working Papers
The global seafood industry currently lacks a standardized, widespread method to easily trace the chain of custody of products that they purchase. With global overfishing leading to declining fish stocks around the world, it is vital for seafood providers to have the ability to identify and buy products from sustainable fisheries that are well managed, target abundant species, and fish in environmentally responsible ways. This paper analyzes public and private initiatives that seek to provide product traceability. In summarizing the current status of seafood traceability, stakeholders agree that are a number of challenges with trying to piece together so many …
Environmental Risk Explored Through Oil Spills And Hydraulic Fracturing: Attempting Environmental Protection Through Policy, Samantha M. Guidon
Environmental Risk Explored Through Oil Spills And Hydraulic Fracturing: Attempting Environmental Protection Through Policy, Samantha M. Guidon
Honors Theses
History demonstrates the dangers of ignoring the environmental risks that correspond to resource extraction, especially in precarious locations. This project analyzed three cases: (1) the 1989 Exxon Valdez oil spill, (2) the 2010 Deepwater Horizon oil spill, and (3) the current question of hydraulic fracturing in New York’s Marcellus Shale. The case studies assessed whether policies for protecting the environment from the risks of human activity have improved and whether such policies can be made both economically efficient and environmentally less risky. While the Exxon Valdez case demonstrated the dangers of not planning for disaster, it did result in the …
Anti-Nuclear Activism And The Past, Present And Future Of United States Nuclear Energy Policy, Isabel C. Zellweger
Anti-Nuclear Activism And The Past, Present And Future Of United States Nuclear Energy Policy, Isabel C. Zellweger
Honors Theses
Nuclear power has had a long and controversial history leading people to have many different views on the topic. Even though nuclear power does provide the nation with a significant portion of its electricity, many still fear its risks, especially after the events at Fukushima last spring. This thesis explores how public opinion, current events, and anti-nuclear activism have shaped nuclear power in America today. After reviewing the literature on nuclear energy in the United States, I discuss the past and current state of United States nuclear energy policy, and then describe changing American attitudes toward nuclear power over time. …
Reducing The Enviromental Impact Of Horse Keeping, Amanda R. Shere
Reducing The Enviromental Impact Of Horse Keeping, Amanda R. Shere
Social Sciences
No abstract provided.
An Investigation Of The Bioactivity Of Irish Seaweeds And Potential Applications As Nutraceuticals., Sabrina Cox
An Investigation Of The Bioactivity Of Irish Seaweeds And Potential Applications As Nutraceuticals., Sabrina Cox
Doctoral
The primary goals of this research were to; identify the bioactivity of a range of edible Irish seaweeds, to examine the current technological procedures currently applied with respect to seaweed processing and in light of this information, to examine the potential of incorporating seaweeds into traditional food products in order to enhance their nutraceutical properties. Currently most Irish seaweeds are washed, dried and packaged, with little done to increase consumer appeal or interest and dried seaweed may appear inaccessible and unfamiliar to consumers. Seaweeds possess an excellent nutritional quality, such as high fibre and phytochemical content, low cholesterol and low …
Rickettsia Felis In Ctenocephalides Felis From Guatemala And Costa Rica, Adriana Troyo, Danilo Alvarez, Lizeth Taylor, Gabriela Abdalla, Olger Calderon-Arguedas, Maria L. Zambrano, Gregory A. Dasch, Kim A. Lindblade, Laya Hun, Marina Eremeeva, Alejandra Estevez
Rickettsia Felis In Ctenocephalides Felis From Guatemala And Costa Rica, Adriana Troyo, Danilo Alvarez, Lizeth Taylor, Gabriela Abdalla, Olger Calderon-Arguedas, Maria L. Zambrano, Gregory A. Dasch, Kim A. Lindblade, Laya Hun, Marina Eremeeva, Alejandra Estevez
Environmental Health Sciences Faculty Publications
Rickettsia felis is an emerging human pathogen associated primarily with the cat flea Ctenocephalides felis. In this study, we investigated the presence of Rickettsia felis in C. felis from Guatemala and Costa Rica. Ctenocephalides felis were collected directly from dogs and cats, and analyzed by polymerase chain reaction for Rickettsia-specific fragments of 17-kDa protein, OmpA, and citrate synthase genes. Rickettsia DNA was detected in 64% (55 of 86) and 58% (47 of 81) of flea pools in Guatemala and Costa Rica, respectively. Sequencing of gltA fragments identified R. felis genotype URRWXCal2 in samples from both countries, and genotype Rf2125 in …
Brief 6: Environmental Emergencies: Challenges And Lessons For International Environmental Governance, Rene Nijenhuis, Carl Bruch
Brief 6: Environmental Emergencies: Challenges And Lessons For International Environmental Governance, Rene Nijenhuis, Carl Bruch
Governance and Sustainability Issue Brief Series
This brief examines the strengths and weaknesses of existing instruments and institutions and addresses the efforts to improve coordination among the international sectors of environmental emergency response. Potential operational, capacity-building, and legal options for strengthening prevailing mechanisms are identified and discussed, including the need for stronger political mandates, the need for a stronger framework to address fragmentation, and the need for procedures to support and facilitate environmental emergency responders. The lessons from this discourse can improve the field of environmental emergency response, while also informing advancements in broader context of international environmental governance.
Monitoring Photocatalytic Degradation Of X-Ray Contrast Media With Raman Spectroscopy, Sabina Salkic
Monitoring Photocatalytic Degradation Of X-Ray Contrast Media With Raman Spectroscopy, Sabina Salkic
Masters Theses & Specialist Projects
X-ray contrast media such as diatrizoate and iohexol have been found in wastewater and drinking water and are difficult to remove because they are resistant to water treatment processes. A removal process can be started with ultraviolet photocatalytic degradation of X-ray contrast media in the presence of titanium dioxide or other catalysts. Raman spectra of diatrizoate and iohexol were taken in an aqueous solution in the presence and absence of titanium dioxide during exposure to ultraviolet radiation. Raman intensity is directly proportional to concentration; therefore, we can measure the rate of the reaction based on changes in the Raman spectrum. …
Validation Of Pcr-Based Assays And Laboratory Accreditation For Environmental Detection Of Aquatic Invasive Species, Invasive Species Advisory Committee
Validation Of Pcr-Based Assays And Laboratory Accreditation For Environmental Detection Of Aquatic Invasive Species, Invasive Species Advisory Committee
National Invasive Species Council
This white paper provides:
a) Background information on the use, accuracy and reliability of PCR-based assays such as environmentally sampled DNA (eDNA) for early detection of aquatic invasive species (AIS) and;
b) Recommendations for establishing a system for validating assays and accrediting laboratories that report on the presence or absence of AIS.
This white paper was developed by the members of ISAC and discusses the need for developing validation requirements for Polymerase Chain Reaction (PCR) and other DNA-based molecular assays that are increasingly being used to detect AIS. It does not provide a simplified checklist for evaluation of their ability …
Planning Framework Options For The Massachusetts Ocean Plan (Draft), Jack Wiggin, Kristin Uiterwyk, Steve Bliven, Dan Hellin, John Duff, David Terkla, Robert E. Bowen, Andrew A. Rosenberg, Jennie Harrington, Jill H. Swasey, Suzanne Iudicello, Robert O’Boyle, Porter Hoagland, Hauke L. Kite-Powell, Di Jin, Fara Courtney, Rich Delaney, Pat Hughes, Tracey Morin Dalton, Suzanne Goulet Orenstein, Charles N. Ehler, Fannie Douvere, Les Kaufman, Charles T. Mccaffrey Jr., Nicholas Napoli, Stephanie Moura, Kim Starbuck
Planning Framework Options For The Massachusetts Ocean Plan (Draft), Jack Wiggin, Kristin Uiterwyk, Steve Bliven, Dan Hellin, John Duff, David Terkla, Robert E. Bowen, Andrew A. Rosenberg, Jennie Harrington, Jill H. Swasey, Suzanne Iudicello, Robert O’Boyle, Porter Hoagland, Hauke L. Kite-Powell, Di Jin, Fara Courtney, Rich Delaney, Pat Hughes, Tracey Morin Dalton, Suzanne Goulet Orenstein, Charles N. Ehler, Fannie Douvere, Les Kaufman, Charles T. Mccaffrey Jr., Nicholas Napoli, Stephanie Moura, Kim Starbuck
Robert E. Bowen
The Massachusetts Ocean Partnership (MOP) Planning Frameworks Team, in consultation with the Massachusetts Executive Office of Energy and Environmental Affairs (EEA), and based on collective experience and a review of ocean, coastal and resource management programs from the US and other countries, suggests that nine elements are essential components of the framework for the Massachusetts Ocean Plan and its implementation. While management plans and programs generally have these elements in common, there are a range of options for carrying out each program component. These options were presented to structure and inform the development of the Massachusetts Ocean Plan. For the …
Developing Performance Indicators To Evaluate The Management Effectiveness Of The Massachusetts Ocean Management Plan, Jack Wiggin, Dan Hellin, Kristin Uiterwyk, Robert E. Bowen, Prassede Vella, John Weber, Stephanie Moura, Nicholas Napoli, Kim Starbuck, Howard Krum
Developing Performance Indicators To Evaluate The Management Effectiveness Of The Massachusetts Ocean Management Plan, Jack Wiggin, Dan Hellin, Kristin Uiterwyk, Robert E. Bowen, Prassede Vella, John Weber, Stephanie Moura, Nicholas Napoli, Kim Starbuck, Howard Krum
Robert E. Bowen
In June 2009, the Massachusetts Executive Office of Energy and Environmental Affairs (EEA) released its draft Massachusetts Ocean Management Plan (draft plan) for public comment. The plan is required by the Oceans Act of 2008 to, among other things, be adaptive to evolving knowledge and understanding of the ocean environment. The plan’s Science Framework establishes a blueprint for future research and data acquisition and ensuring that the plan evolves and its management measures adapt to this new and enhanced information. As stated in Chapter 5 of the draft plan, an important part of the science framework is the development and …
Agricultural Efficiency And The End Of The Oil Age; Building A Future Of Longevity, Keith Mchugh
Agricultural Efficiency And The End Of The Oil Age; Building A Future Of Longevity, Keith Mchugh
Pomona Senior Theses
This thesis uses an efficiency analysis of agricultural systems to assert that, in lieu of rising prices of fossil fuel, people need to come into more direct contact with their food systems. With a switch to smaller, more efficient farms that rely less on fossil fuel and are connected with the communities they supply for, we can avoid an energy crisis turning into a famine. These smaller-scale systems can help create self-contained, carbon-neutral communities.
San Antonio High School Food Justice Program: A Handbook And Evaluation Of Edible Education, Katherine B. Tenneson
San Antonio High School Food Justice Program: A Handbook And Evaluation Of Edible Education, Katherine B. Tenneson
Pitzer Senior Theses
This senior environmental studies thesis explains and analyzes edible education through a food and gardening program at a continuation high school in Claremont, California. The first chapter situates the program-specific analysis by providing background information of the edible education movement, a history of the Edible Schoolyard in Berkeley, California, and an explanation of why food is a powerful teaching tool. The second chapter delineates the program by describing all of its components and compiling essential resources and teaching documents. The third chapter is based on interviews with 9 of 12 involved students and 7 teachers, and thoroughly explains the outcomes …
Regimes And Resilience In The Modern Global Food System, Sara W. Tower
Regimes And Resilience In The Modern Global Food System, Sara W. Tower
Student Publications
Much public discourse surrounding the modern global food system operates on the assumption of the primary agency of individual consumers in ensuring an equitable and sustainable food supply. However, this approach fails to account for the larger structural forces of the system which frame the limits of how we interact with and are affected by our food system. Taking a closer look at the global economic, political, cultural, and environmental forces that have collectively shaped historical food regimes reveals the deeper structural patterns that currently determine how we produce, distribute, and consume food around the world. Due to the underlying …
Towards Sustainable Development Of Nanomanufacturing, Sasikumar Ramdas Naidu
Towards Sustainable Development Of Nanomanufacturing, Sasikumar Ramdas Naidu
Doctoral Dissertations
"Sustainability" is a buzz word these days not just among regulatory agencies but even with corporations, as evident by the release of annual sustainability report by a large number of firms. Companies are starting to portray profit making along with corporate environmental responsibility.
Nanotechnology and nanomanufacturing which holds a lot of promise for development in a multitude of fields in science and engineering is the new kid on the block and carries a lot of apprehension due to public concern about their potential unwanted side effects that may result in the case of an untoward incident or lack of oversight. …
The “Green Eating” Project: A Pilot Intervention To Promote Sustainable And Healthy Eating In College Students, Kelleigh E. Eastman
The “Green Eating” Project: A Pilot Intervention To Promote Sustainable And Healthy Eating In College Students, Kelleigh E. Eastman
Senior Honors Projects
The “Green Eating” Project: A Pilot Intervention to Promote Sustainable and Healthy Eating in College Students
Kelleigh Eastman
Sponsor: Geoffrey Greene, Nutrition and Dietetics
A topic of interest that is growing in the general population is the idea of being sustainable, or “green”, and there is a rising awareness in sustainable practices involving food and the environment. Some of the “green” eating behaviors identified through my research included eating a plant-based (i.e. vegetarian or semi-vegetarian) diet, eating locally grown foods, eating organically grown foods, and eating foods that are labeled fair-trade. Frequently, these “green” eating behaviors are healthful eating behaviors …
Integrating Human Variables In Cross-Boundary Monitoring Of Aberdare Preserves In Kenya, Peter K. Njuguna
Integrating Human Variables In Cross-Boundary Monitoring Of Aberdare Preserves In Kenya, Peter K. Njuguna
Graduate Theses and Dissertations
This research critically examines extant data systems and their linkage of scientific research to policy and public education in east African highland forest conservation preserves. The research indicates that the current state of data and monitoring systems in the region imposes substantial limitations on the ability to manage these preserves. Major outcomes of those constraints manifest in unprecedented cross-boundary pressure such as encroachment and conversion of forest to agriculture, increased human-wildlife conflicts, and constrained relations among primary stakeholders. Current monitoring is biodiversity focused within preserves and fails to capture human dimensions in adjoining areas across preserve boundaries. This study proposes …
Roger Williams Park Edible Forest Garden, Mark S. Scialla
Roger Williams Park Edible Forest Garden, Mark S. Scialla
Senior Honors Projects
An edible forest garden is a low-maintenance system that uses edible native and regionally-adapted plants arranged in beneficial relationships to meet human, wildlife and ecosystem needs. The forest garden in Roger Williams Park will transform underutilized urban land into a highly productive parcel producing market-viable fruits, nuts, vegetables, medicine and fiber. Forest gardens mimic natural forest systems in architecture and complexity. The design follows ecological principles to create a system that promotes biodiversity and enhances the surrounding ecosystem. This project also demonstrates the potential to grow food and create land-based livelihoods in the city.
Located on the edge of a …
Natural And Constructed Wetlands For Ecosystem And Engineering Services In The Arid And Semi-Arid Regions, Achyut Raj Adhikari
Natural And Constructed Wetlands For Ecosystem And Engineering Services In The Arid And Semi-Arid Regions, Achyut Raj Adhikari
UNLV Theses, Dissertations, Professional Papers, and Capstones
The Las Vegas Wash (LVW) has undergone significant wetlands degradation and soil erosion over the past thirty years due to increasing flow resulting from urbanization and large rainfall events in the Las Vegas Valley Watershed. The increased flow and associated pollution load in the LVW and its adverse impact in Lake Mead have alerted stakeholders to pay a greater attention to explore alternative measures for rehabilitation of wetland ecosystems. This dissertation, using the case of changes in LVW, analyzes and describes ecological and engineering services provided by wetlands in arid and semi-arid regions and provides a knowledge base that can …
The New American Conservation Movement: New Strategies, Focus And Organizations For The 21st Century, Amy Deanna Northrup
The New American Conservation Movement: New Strategies, Focus And Organizations For The 21st Century, Amy Deanna Northrup
UNLV Theses, Dissertations, Professional Papers, and Capstones
This dissertation provides evidence of the emergence of a new conservation movement in the United States. The strategic, tactical and organizational approaches of traditional conservation efforts, which began in the early 1900s, have shifted during the last two decades. Specifically, the new conservation movement is characterized by three distinct changes. First, many of the well-established conservation organizations, such as the Sierra Club and National Audubon Society, have largely abandoned their traditional focus on increasing the number of acres preserved; instead more defensive and fragmented forms of conservation now reign. The second change to the conservation movement involves a dramatic expansion …
Exploring The Seed Bank Dynamics Of Red Brome: Longevity, Density, And Relationship To Fire, Benjamin S. Jurand
Exploring The Seed Bank Dynamics Of Red Brome: Longevity, Density, And Relationship To Fire, Benjamin S. Jurand
UNLV Theses, Dissertations, Professional Papers, and Capstones
This research explores several untested aspects of the seed bank characteristics of red brome (Bromus rubens), an invasive annual grass in southwestern United States arid lands. Red brome is a formidable competitor to native plant species, both annual and perennial alike, and produces many seeds that germinate easily. The stalks of red brome contribute continuous-cover fuel loads that facilitate wildfires destructive to mature native Mojave Desert plant communities. This makes it a priority species for land managers, particularly when dealing with recovery after fire.
This project addressed questions related to the longevity of red brome seeds in soil seed banks …
Gray Wolf Rising: Why The Clash Over Wolf Management In The Northern Rockies Calls For Congressional Action To Define "Recovery" Under The Endangered Species Act, W. Ryan Stephens
Gray Wolf Rising: Why The Clash Over Wolf Management In The Northern Rockies Calls For Congressional Action To Define "Recovery" Under The Endangered Species Act, W. Ryan Stephens
William & Mary Environmental Law and Policy Review
No abstract provided.
Arsenic Contamination In Groundwater In Vietnam: An Overview And Analysis Of The Historical, Cultural, Economic, And Political Parameters In The Success Of Various Mitigation Options, Thuy M. Ly
Pomona Senior Theses
Although arsenic is naturally present in the environment, 99% of human exposure to arsenic is through ingestion. Throughout history, arsenic is known as “the king of poisons”; it is mutagenic, carcinogenic, and teratogenic. Even in smaller concentrations, it accumulates in the body and takes decades before any physical symptoms of arsenic poisoning shows. According to the World Health Organization (WHO), the safe concentration of arsenic in drinking water is 10 µg/L. However, this limit is often times ignored until it is decades too late and people begin showing symptoms of having been poisoned.
This is the current situation for Vietnam, …
Environmental Critiques Of Nuclear Energy, William Hummel
Environmental Critiques Of Nuclear Energy, William Hummel
Pomona Senior Theses
This essay identifies and evaluates the most common environmental critiques made against nuclear energy development. Environmentalists articulate four major concerns: the destructive effects and health risks of uranium mining; the dangers posed by radiation releases and meltdowns; the difficult of nuclear waste disposal; and national security concerns, including nuclear weapons proliferation and the possibility of attack or sabotage. By characterizing and describing these concerns, we are better able to decide which problems are most compelling, and suggest possible policy-driven solutions.
The Usage Of Natural Fertilizers - A Practice That Favors The Ecological Agriculture Development In Romania, Andreea Ghiurcă, Andreea Lămășanu, Florin C. Mihai
The Usage Of Natural Fertilizers - A Practice That Favors The Ecological Agriculture Development In Romania, Andreea Ghiurcă, Andreea Lămășanu, Florin C. Mihai
Florin C MIHAI
Natural fertilizers were used in agriculture since ancient times and are still the best method of soil fertilization. Traditional agriculture, practiced in rural areas of Romania, contributes to the maintenance of soils fertilization ecological practices. Our research shows the evolution of the quantity of natural fertilizers used in the past 20 years at the national level and at the level of NeamŃ County captures the evolution over the seven years of natural fertilizers areas. In the analyzed period, the quantity of natural fertilizers on agricultural land is growing, but fertilized land record low values, showing that it has increased the …
Exploring German And American Modes Of Pedagogical And Institutional Sustainability: Forging A Way Into The Future, Lindon N. Pronto
Exploring German And American Modes Of Pedagogical And Institutional Sustainability: Forging A Way Into The Future, Lindon N. Pronto
Pitzer Senior Theses
Rooted deep in Germany's past is its modern socio-political grounding for environmental respect and sustainability. This translates into individual and collective action and extends equally to the economic and policy realm as it does to educational institutions. This thesis evaluates research conducted in Germany with a view to what best approaches are transferable to the United States liberal arts setting. Furthermore, exemplary American models of institutional sustainability and environmental education are explored and combined with those from abroad to produce a blueprint and action plan fitting for the American college and university.