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Articles 5761 - 5790 of 8699
Full-Text Articles in Physical Sciences and Mathematics
Algal Biomass As A Binding Agent For The Densification Of Miscanthus, Sunil Thapa, Daniel B. Johnson, Peter Ping Liu, Thomas Canam
Algal Biomass As A Binding Agent For The Densification Of Miscanthus, Sunil Thapa, Daniel B. Johnson, Peter Ping Liu, Thomas Canam
Faculty Research & Creative Activity
Purpose: Lignocellulosic biomass has been regarded as an important future energy source due to its excessive availability; however, the wide application of this material for many applications is restricted by the high costs associated with densification, transportation, thermo-chemical pretreatment and conversion. In order to increase the density of lignocellulosic biomass, it is typically compressed into pellets or briquettes. This frequently requires the addition of additives, which may negatively impact the economics of the process. Environmentally-friendly binding agents that can be obtained inexpensively are therefore desirable. This study examines the change in physicochemical properties of densified Miscanthus straw where algae were …
Algal Biomass As A Binding Agent For The Densification Of Miscanthus, Sunil Thapa, Daniel Johnson, Peter Liu, Thomas Canam
Algal Biomass As A Binding Agent For The Densification Of Miscanthus, Sunil Thapa, Daniel Johnson, Peter Liu, Thomas Canam
Faculty Research & Creative Activity
Purpose: Lignocellulosic biomass has been regarded as an important future energy source due to its excessive availability; however, the wide application of this material for many applications is restricted by the high costs associated with densification, transportation, thermo-chemical pretreatment and conversion. In order to increase the density of lignocellulosic biomass, it is typically compressed into pellets or briquettes. This frequently requires the addition of additives, which may negatively impact the economics of the process. Environmentally-friendly binding agents that can be obtained inexpensively are therefore desirable. This study examines the change in physicochemical properties of densified Miscanthus straw where algae were …
Does Material Choice Drive Sustainability Of 3d Printing?, Jeremy Faludi, Zhongyin Hu, Shahd Alrashed, Christopher Braunholz, Suneesh Kaul, Leulekal Kassaye
Does Material Choice Drive Sustainability Of 3d Printing?, Jeremy Faludi, Zhongyin Hu, Shahd Alrashed, Christopher Braunholz, Suneesh Kaul, Leulekal Kassaye
Dartmouth Scholarship
Environmental impacts of six 3D printers using various materials were compared to determine if material choice drove sustainability, or if other factors such as machine type, machine size, or machine utilization dominate. Cradle-to-grave life-cycle assessments were performed, comparing a commercial-scale FDM machine printing in ABS plastic, a desktop FDM machine printing in ABS, a desktop FDM machine printing in PET and PLA plastics, a polyjet machine printing in its proprietary polymer, an SLA machine printing in its polymer, and an inkjet machine hacked to print in salt and dextrose. All scenarios were scored using ReCiPe Endpoint H methodology to combine …
Measuring Good Architecture: Long Life, Loose Fit, Low Energy, Craig Langston
Measuring Good Architecture: Long Life, Loose Fit, Low Energy, Craig Langston
Craig Langston
Good architecture is something that we all seek, but which is difficult to define. Sir Alexander John Gordon, in his role as President of the Royal Institute of British Architects, defined ‘good architecture’ in 1972 as buildings that exhibit ‘long life, loose fit and low energy’. These characteristics, nicknamed by Gordon as the 3L Principle, are measurable. Furthermore, life cycle cost (LCC) provides a method for accessing the economic contribution or burden created by buildings to the society they aim to serve. Yet there is no research available to investigate the connection, if any, between 3L and LCC. It might …
Designing For Better Building Adaptability: A Comparison Of Adaptstar And Arp Models, Sheila Conejos, Craig Langston, Jim Smith
Designing For Better Building Adaptability: A Comparison Of Adaptstar And Arp Models, Sheila Conejos, Craig Langston, Jim Smith
Craig Langston
Can sustainability and adaptability be integrated in a single decision tool for designing future buildings? Indeed, it is not possible to know what lies ahead for future buildings but, using current research on sustainability and the impact on natural resources and climate, it is possible to forecast the connection between built environment activity and sustainability. This paper demonstrates that the assessment of future adaptation in newly designed building is achievable by using the adaptSTAR model. This new design-rating tool, based on detailed analysis of 12 award-winning adaptive reuse projects in Australia, will assist designers in making decisions to achieve optimum …
Sustainable Campus: Engaging The Community In Sustainability, Linda Too, Bhishna Bajracharya
Sustainable Campus: Engaging The Community In Sustainability, Linda Too, Bhishna Bajracharya
Bhishna Bajracharya
Purpose – The purpose of this paper is to identify the major factors necessary for engaging university campus community in sustainability. While general awareness in sustainability issues has improved in recent years through mass media coverage, this knowledge is not always translated into actual sustainable practice. Studies have indicated that there are many factors for engaging the community in sustainability.
Design/methodology/approach – A multi-disciplinary literature review is first undertaken to distil the drivers that enhance participation in sustainability programmes by the university community. Next, to illustrate the applicability of the factors identified in the community engagement framework, two case studies …
Feral Deer In The Suburbs: An Emerging Issue For Australia?, Shelley Burgin, Mariama Mattila, Daryl Mcphee, Tor Hundloe
Feral Deer In The Suburbs: An Emerging Issue For Australia?, Shelley Burgin, Mariama Mattila, Daryl Mcphee, Tor Hundloe
Tor Hundloe
Deer are not endemic to Australia, but were introduced for game and aesthetics between the early 18th and 20th centuries. Until recent decades, most deer descended from these introductions. Before the 1970s when deer numbers and distribution expanded dramatically, farming was a modest enterprise. With the collapse of farming in the 1990s, large numbers of deer were deliberately released and translocated. Feral numbers and herds have subsequently expanded, and are increasingly encroaching on urban areas. As a new issue in Australia, views toward feral deer are polarized and span “welcome guest” to “major pest.” The emerging urban deer issues need …
Economics Of The Queensland Mud Crab Fishery, Tor Hundloe
Economics Of The Queensland Mud Crab Fishery, Tor Hundloe
Tor Hundloe
A series of analyses of catch-effort data from compulsory commercial logbooks and from the Department’s Long-Term Monitoring Programme (LTMP) were conducted after the Workshop. Although not part of the Project plan, these were initiated as a result of questions arising from the Workshop participants about the reliability of the data used in the simulation modelling. Exploration of the logbook data and results of the analyses suggest that biases in the data (from a variety of sources, but principally the widespread use of more than the permitted number of pots) may be giving an over-optimistic view of the status of the …
Feral Deer In The Suburbs: An Emerging Issue For Australia?, Shelley Burgin, Mariama Mattila, Daryl Mcphee, Tor Hundloe
Feral Deer In The Suburbs: An Emerging Issue For Australia?, Shelley Burgin, Mariama Mattila, Daryl Mcphee, Tor Hundloe
Daryl McPhee
Deer are not endemic to Australia, but were introduced for game and aesthetics between the early 18th and 20th centuries. Until recent decades, most deer descended from these introductions. Before the 1970s when deer numbers and distribution expanded dramatically, farming was a modest enterprise. With the collapse of farming in the 1990s, large numbers of deer were deliberately released and translocated. Feral numbers and herds have subsequently expanded, and are increasingly encroaching on urban areas. As a new issue in Australia, views toward feral deer are polarized and span “welcome guest” to “major pest.” The emerging urban deer issues need …
Maine's Sustainability Science Initiative, Michael Eckardt, Vicki Nemeth, David Hart
Maine's Sustainability Science Initiative, Michael Eckardt, Vicki Nemeth, David Hart
University of Maine Office of Research Administration: Grant Reports
Goals: Maine's Sustainability Science Initiative (SSI) seeks to catalyze and expand the state's interdisciplinary research capacity for understanding the coupled dynamics of social-ecological systems (SES) and determining how such knowledge can best inform stakeholders and their decision-making processes. The core SSI objective is to create a new statewide Center for Sustainability Solutions (CSS) where place-based systems research, knowledge to action focus, and strong stakeholder partnerships will serve as a testbed for developing solutions to sustainable development challenges in and beyond Maine. The research focuses on three interacting drivers of landscape change (urbanization, forest ecosystem management, and climate change) that affect …
Sensible Air To Air Heat Recovery Strategies In A Passive House, Santiago Martin Rodriguez-Anderson
Sensible Air To Air Heat Recovery Strategies In A Passive House, Santiago Martin Rodriguez-Anderson
Dissertations and Theses
Due to rising energy costs and concerns about global climate change, high performance buildings are more in demand than ever before. With roughly 20% of the total energy consumption in the United States being devoted to residential use, this sector represents a significant opportunity for future savings. There are many guidelines and standards for reducing building energy consumption. One of the most stringent is the Passive House Standard. The standard requires that that air infiltration is less than or equal to 0.6 air changes per hour at a 50 Pascal pressure difference (ACH 50), annual heating energy is less than …
Comparing Three Methods For Estimating Ozone Depleting Substance Substitute Greenhouse Gases: Case Study Of The New York City Region, Wallace A. Murray Iii
Comparing Three Methods For Estimating Ozone Depleting Substance Substitute Greenhouse Gases: Case Study Of The New York City Region, Wallace A. Murray Iii
Theses and Dissertations
This thesis evaluates the United States Environmental Protection Agency (EPA) method for estimating emissions from one source, Ozone Depleting Substances Substitutes (ODS substitutes) by comparing results for the New York City Metropolitan Statistical Area (NYC-MSA) with results from two other methodologies. The EPA’s method utilizes population data and GDP data to estimate and geographically allocate emissions, with little regard for the geographies of industrial activity. The two alternative methods use data for industrial employment and activity to provide results for comparison and perhaps a more accurate accounting and allocation of emissions throughout the NYC-MSA.
Get Two For One—The Same Strategies Help You Go Green And Improve Wellness, Jean S. Waters
Get Two For One—The Same Strategies Help You Go Green And Improve Wellness, Jean S. Waters
White Papers
Going green and losing weight may very well be two of the biggest ever lifestyle buzzwords. Both require conscious effort, planning and systematic changes and both yield beneficial results. Drawing comparisons between green and wellness campaigns, Jean Waters, environmental engineer, discusses costs, benefits and strategies of pursuing sustainability.
Double Vault Composting Latrines In Rural Paraguay : Feasible Construction And Optimal Use, Paul T. Pebler
Double Vault Composting Latrines In Rural Paraguay : Feasible Construction And Optimal Use, Paul T. Pebler
Dissertations, Master's Theses and Master's Reports - Open
Water resource depletion and sanitation are growing problems around the world. A solution to both of these problems is the use of composting latrines, as it requires no water and has been recommended by the World Health Organization as an improved sanitation technology. However, little analysis has been done on the decomposition process occurring inside the latrine, including what temperatures are reached and what variables most affect the composting process. Having better knowledge of how outside variables affect composting latrines can aid development workers on the choice of implementing such technology, and to better educate the users on the appropriate …
Automated Scour Detection Arrays Using Bio-Inspired Magnetostrictive Flow Sensors, Baibhav Rajbhandari
Automated Scour Detection Arrays Using Bio-Inspired Magnetostrictive Flow Sensors, Baibhav Rajbhandari
Dissertations, Master's Theses and Master's Reports - Open
Scour is the most common cause of catastrophic bridge failures worldwide. Approximately over 60% of bridge failures reported in the United States from 1966 to 2005 are scour related. To ensure the continued safe operation of bridges, monitoring bridge scour is of paramount importance. Most monitoring regimes that are widely used are based on expensive underwater instrumentation. This research focuses on scour detection using automated remote flow detection arrays based on bio-inspired flow sensors. This study employs an array of bio inspired flow sensors that are inexpensive and robust versions of buried-rod scour sensor arrays, coupled with low-power wireless sensor …
Understanding And Informing Permitting Decisions For Tidal Energy Development Using An Adaptive Management Framework, Teresa R. Johnson, Jessica Spelke Jansujwicz
Understanding And Informing Permitting Decisions For Tidal Energy Development Using An Adaptive Management Framework, Teresa R. Johnson, Jessica Spelke Jansujwicz
Publications
Marine hydrokinetic (MHK) energy offers a promising new source of renewable ocean energy. However, the young industry is faced with significant challenges. Most notable is the challenge of regulatory uncertainty that is thought to hamper the successful deployment of new tidal energy technologies. Adaptive management may be one approach to deal with uncertainty and inform permitting decisions for hydrokinetic projects. In this study, we apply the concept of adaptive management to the Cobscook Bay Tidal Energy Project in Maine to better understand and inform permitting decisions. Using a social science approach of observation, interviews, and document analysis, we examine (1) …
Will Offshore Energy Face “Fair Winds And Following Seas”?: Understanding The Factors Influencing Offshore Wind Acceptance, Mario F. Teisl, Shannon K. Mccoy, Sarah J. Marrinan, Caroline L. Noblet, Teresa R. Johnson, Megan Wibberly, Sharon Klein
Will Offshore Energy Face “Fair Winds And Following Seas”?: Understanding The Factors Influencing Offshore Wind Acceptance, Mario F. Teisl, Shannon K. Mccoy, Sarah J. Marrinan, Caroline L. Noblet, Teresa R. Johnson, Megan Wibberly, Sharon Klein
Publications
Most offshore energy studies have focused on measuring or explaining people’s perceptions of, and reactions to, specific installations. However, there are two different types of acceptance: one surrounds the siting of projects while the other surrounds a more general acceptance of offshore energy. Understanding what drives this second type of acceptance is important as governments have implemented new financial incentives and policies to support renewable energy development; however, citizens and government officials may be increasingly opposed to some of these support mechanisms. Our paper fills a void in the literature by using regression approaches to better understand how people’s evaluations …
A Multilevel Evolutionary Framework For Sustainability Analysis, Timothy M. Waring, Michelle Ann Kline, Jeremy Brooks, Sandra Goff, John Gowdy, Marco Jansen, Paul Smaldino, Jennifer Jacquet
A Multilevel Evolutionary Framework For Sustainability Analysis, Timothy M. Waring, Michelle Ann Kline, Jeremy Brooks, Sandra Goff, John Gowdy, Marco Jansen, Paul Smaldino, Jennifer Jacquet
Publications
Sustainability theory can help achieve desirable social-ecological states by generalizing lessons across contexts and improving the design of sustainability interventions. To accomplish these goals, we argue that theory in sustainability science must (1) explain the emergence and persistence of social-ecological states, (2) account for endogenous cultural change, (3) incorporate cooperation dynamics, and (4) address the complexities of multilevel social-ecological interactions. We suggest that cultural evolutionary theory broadly, and cultural multilevel selection in particular, can improve on these fronts. We outline a multilevel evolutionary framework for describing social-ecological change and detail how multilevel cooperative dynamics can determine outcomes in environmental dilemmas. …
Detection, Occurrence And Fate Of Emerging Contaminants In Agricultural Environments, Daniel D. Snow, David A. Cassada, Shannon L. Bartelt-Hunt, Xu Li, Matteo D'Alessio, Rachel Levine, Yun Zhang, J. Brett Sallach
Detection, Occurrence And Fate Of Emerging Contaminants In Agricultural Environments, Daniel D. Snow, David A. Cassada, Shannon L. Bartelt-Hunt, Xu Li, Matteo D'Alessio, Rachel Levine, Yun Zhang, J. Brett Sallach
Nebraska Water Center: Faculty Publications
A total of 43 papers published in 2014 were reviewed ranging from detailed descriptions of analytical methods, to fate and occurrence studies, to measuring and predicting biological effects for a wide variety of emerging contaminants likely to occur in agricultural environments. New methods and studies on veterinary pharmaceuticals, natural and synthetics steroids, and antibiotic resistance genes in agricultural environments continue to expand our knowledge base on the occurrence and potential impacts of these compounds. This review is divided into the following sections: Introduction, Analytical Methods, Occurrence and Fate, Antibiotic Resistance Genes, and Risk Assessment.
Are Conservation Organizations Configured For Effective Adaptation To Global Change?, Paul R. Armsworth, Eric R. Larson, Stephen T. Jackson, Dov F. Sax, Paul Simonin, Bernd Blossey, Nancy Green, Mary L. Klein, Liza Lester, Taylor H. Ricketts, Michael C. Runge, M. Rebecca Shaw
Are Conservation Organizations Configured For Effective Adaptation To Global Change?, Paul R. Armsworth, Eric R. Larson, Stephen T. Jackson, Dov F. Sax, Paul Simonin, Bernd Blossey, Nancy Green, Mary L. Klein, Liza Lester, Taylor H. Ricketts, Michael C. Runge, M. Rebecca Shaw
Rubenstein School of Environment and Natural Resources Faculty Publications
© The Ecological Society of America. Conservation organizations must adapt to respond to the ecological impacts of global change. Numerous changes to conservation actions (eg facilitated ecological transitions, managed relocations, or increased corridor development) have been recommended, but some institutional restructuring within organizations may also be needed. Here we discuss the capacity of conservation organizations to adapt to changing environmental conditions, focusing primarily on public agencies and nonprofits active in land protection and management in the US. After first reviewing how these organizations anticipate and detect impacts affecting target species and ecosystems, we then discuss whether they are sufficiently flexible …
Social Entrepreneurship And Social Business: Retrospective And Prospective Research, Edgard Barki, Graziella Comini, Ann Cunliffe, Stuart Hart, Sudhanshu Rai
Social Entrepreneurship And Social Business: Retrospective And Prospective Research, Edgard Barki, Graziella Comini, Ann Cunliffe, Stuart Hart, Sudhanshu Rai
Grossman School of Business Faculty Publications
Social Entrepreneurship and Social Business (SE/SB), inclusive business, businesses with social impact and a higher purpose are becoming increasingly important both in academia and the business world (Sassmannshausen & Volkmann, 2013). Since the influential article by Dees (1998), many different perspectives about social entrepreneurship and social business have been discussed in academia. On the management side, these types of businesses have also proliferated in the last decades. Yunus with his work leading Grameen Bank has inspired many other entrepreneurs and organizations to create a new kind of business more embedded with a social purpose. The main purpose of the Social …
A Protocol For Eliciting Nonmaterial Values Through A Cultural Ecosystem Services Frame, Rachelle K. Gould, Sarah C. Klain, Nicole M. Ardoin, Terre Satterfield, Ulalia Woodside, Neil Hannahs, Gretchen C. Daily, Kai M. Chan
A Protocol For Eliciting Nonmaterial Values Through A Cultural Ecosystem Services Frame, Rachelle K. Gould, Sarah C. Klain, Nicole M. Ardoin, Terre Satterfield, Ulalia Woodside, Neil Hannahs, Gretchen C. Daily, Kai M. Chan
Rubenstein School of Environment and Natural Resources Faculty Publications
Conservation Biology published by Wiley Periodicals, Inc. on behalf of Society for Conservation Biology. Stakeholders' nonmaterial desires, needs, and values often critically influence the success of conservation projects. These considerations are challenging to articulate and characterize, resulting in their limited uptake in management and policy. We devised an interview protocol designed to enhance understanding of cultural ecosystem services (CES). The protocol begins with discussion of ecosystem-related activities (e.g., recreation, hunting) and management and then addresses CES, prompting for values encompassing concepts identified in the Millennium Ecosystem Assessment (2005) and explored in other CES research. We piloted the protocol in Hawaii …
Cures Garden Program - Martha Baldwin, Center For Urban Resilience
Cures Garden Program - Martha Baldwin, Center For Urban Resilience
Module 10: Garden Ecology
No abstract provided.
A Management Framework For Municipal Solid Waste Systems And Its Application To Food Waste Prevention, Krista L. Thyberg, David J. Tonjes
A Management Framework For Municipal Solid Waste Systems And Its Application To Food Waste Prevention, Krista L. Thyberg, David J. Tonjes
Technology & Society Faculty Publications
Waste management is a complex task involving numerous waste fractions, a range of technological treatment options, and many outputs that are circulated back to society. A systematic, interdisciplinary systems management framework was developed to facilitate the planning, implementation, and maintenance of sustainable waste systems. It aims not to replace existing decision-making approaches, but rather to enable their integration to allow for inclusion of overall sustainability concerns and address the complexity of solid waste management. The framework defines key considerations for system design, steps for performance monitoring, and approaches for facilitating continual system improvements. It was developed by critically examining the …
Differences In Waste Generation, Waste Composition, And Source Separation Across Three Waste Districts In A New York Suburb, Omkar Aphale, Krista L. Thyberg, David J. Tonjes
Differences In Waste Generation, Waste Composition, And Source Separation Across Three Waste Districts In A New York Suburb, Omkar Aphale, Krista L. Thyberg, David J. Tonjes
Technology & Society Faculty Publications
Six tonnes of discards and recyclables from three waste districts in a New York suburb were sorted in 2012. The districts were chosen because one had a higher recycling percentage, one had median performance, and one was a low performing district. ASTM standards were followed for the waste composition sorting. The results showed, as expected, that the waste district with the highest recycling rate appeared to have the highest separation efficiencies, leading to greater amounts of recyclable materials being source separated. The waste districts also had different overall waste generation, both in terms of the amounts of wastes generated, and …
Quantification Of Food Waste Disposal In The United States: A Meta-Analysis, Krista L. Thyberg, David J. Tonjes, Jessica Gurevitch
Quantification Of Food Waste Disposal In The United States: A Meta-Analysis, Krista L. Thyberg, David J. Tonjes, Jessica Gurevitch
Technology & Society Faculty Publications
Food waste has major consequences for social, nutritional, economic, and environmental issues, and yet the amount of food waste disposed in the U.S. has not been accurately quantified. We introduce the transparent and repeatable methods of meta-analysis and systematic reviewing to determine how much food is discarded in the U.S., and to determine if specific factors drive increased disposal. The aggregate proportion of food waste in U.S. municipal solid waste from 1995 to 2013 was found to be 0.147 (95% CI 0.137-0.157) of total waste, which is lower than that estimated by USEPA for the same period (0.176). The proportion …
Collective Impact: Results From A Multi-Campus Farm To College Pilot Program, Mary Ellen Mallia, Jamie Adams, Hannah Morgan, Lisa Mitten, Deborah Howard
Collective Impact: Results From A Multi-Campus Farm To College Pilot Program, Mary Ellen Mallia, Jamie Adams, Hannah Morgan, Lisa Mitten, Deborah Howard
Presentations
Presented at Association for the Advancement of Sustainability in Higher Education (AASHE) Conference and State of NY Sustainability Conference.
Scaling Up Local Food Sourcing: A Multi-Campus Farm To College Pilot (2015), Mary Ellen Mallia, Lisa Mitten, Hannah Morgan, Jamie Adams, Deborah Howard
Scaling Up Local Food Sourcing: A Multi-Campus Farm To College Pilot (2015), Mary Ellen Mallia, Lisa Mitten, Hannah Morgan, Jamie Adams, Deborah Howard
Presentations
Presented at the Northeast Campus Sustainability Consortium Conference.
Scaling Up Local Food Purchases, Mary Ellen Mallia, Lisa Mitten, Hannah Morgan, Jamie Adams, Deborah Howard
Scaling Up Local Food Purchases, Mary Ellen Mallia, Lisa Mitten, Hannah Morgan, Jamie Adams, Deborah Howard
Presentations
Presented at the State of NY Sustainability Conference.
Linking Sustainability To Quality Management And Firm Performance, Rajat Mishra, Randy Napier
Linking Sustainability To Quality Management And Firm Performance, Rajat Mishra, Randy Napier
Faculty Publications
Environmental management practices have evolved significantly over the past two decades. During that time, sustainable operations management practices have purportedly made positive contributions to overall firm performance. This paper develops two conceptual frameworks regarding the relationships among specific elements of environmental management, quality management, and firm performance. We suggest that innovation in quality management mediates the relationship between design for environment and firm performance, and that statistical process control techniques moderate the relationship between environmental management systems and firm performance. We identify future research possibilities, based on these frameworks, to inform scholarly research and practice in environmental management and quality …