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ItemProgramming Shape( 2018-04-16) Mahadevan, L.Thin sheets are easier to bend than stretch. This simple observation leads to the constrained freedom underlying the shape shifting abilities of sheets that can accommodate globally periodic wrinkles, localized defect-like creases, and a host of variations in between. But how can we design shape (for function) ? I will describe our attempts to solve this problem in a few different settings that include 2d kirigami tilings for planar shapes, 3d origami tessellations for complex surfaces, and 4d printing and growing strategies of flowers and faces that also include time, using a combination of experimental, computational and theoretical approaches.
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ItemNanotechnology-Enabled Water Treatment: A Vision to Enable Decentralized Water Treatment and Address Growing Challenges of the Water Energy Nexus(Georgia Institute of Technology, 2018-03-28) Alvarez, PedroThrough control over material size, morphology and chemical structure, nanotechnology offers novel materials that are nearly “all surface” and that can be more reactive per atom than bulk materials. Such engineered nanomaterials (ENMs) can offer superior catalytic, adsorptive, optical, quantum, electrical and/or antimicrobial properties that enable multi-functional technology platforms for next- generation water treatment. This presentation will address emerging opportunities for nanotechnology to improve the selectivity and efficiency to remove priority pollutants, decrease electrical energy requirements, and meet a growing need for safer and more affordable decentralized water treatment and reuse. Because water is by far the largest waste stream of the energy industry, we will also discuss technological innovation to enable produced water reuse in remote (off-grid) oil and gas fields, to minimize freshwater withdrawal and disposal challenges.
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ItemCharacterization of cementitious materials using X-ray synchrotron radiation: What we know, what we don’t know, and what we want to know( 2017-06-27) Monteiro, PauloFor the last two decades, our research group has conducted research in various international synchrotron facilities, including ALS (Lawrence Berkeley National Lab), APS (Argonne National Lab), BESSY (Germany), ELLETRA (Italy), LNSL (Brazil), and SLRI (Thailand). In this lecture, I will summarize the highlights and pitfalls of using this powerful characterization technique. The presentation will also describe new results on a) understanding catalytic reactions using in-situ XPS, b) linking the chemical and mechanical properties of calcium (alumino)silicate hydrate using HP-XRD, and c) characterizing the early hydration with high-resolution spectromicroscopy. The lecture will end with personal recommendations for future research.
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ItemThe Future of Online Graduate Education in 21st Century Research Universities( 2015-05-26) Buttlar, William G.The nature and demand for graduate and undergraduate education is rapidly evolving. Some fields, such as Civil and Environmental Engineering, are closing in on requiring a Master’s degree or equivalent graduate coursework as a requirement for obtaining licensure to practice in the profession. Employers are looking to universities to provide additional professional or transferable skills to their graduate students, as evidenced by the rise in Professional Science Master’s and other professionally-oriented Master’s programs. Students are looking for ways to reduce or eliminate additional student loan debt as they pursue graduate degrees, and are hungry for opportunities to work while they pursue graduate certificates and degrees. The contemporary student expects to float seamlessly between synchronous and asynchronous learning environments, expects a flexible curriculum allowing interdisciplinary study, and expects teaching technologies and social media to be fully integrated into their collegiate educational and networking experience. These factors suggest that online undergraduate and graduate education will play a pivotal role in the transformation of the 21st century research university. This seminar will provide a case for the development and inclusion of online graduate STEM education at 21st century research universities, and will review lessons learned in developing and deploying ‘traditional’ online and massive open online courses (MOOCs) and programs at the University of Illinois at Urbana-Champaign. Preliminary findings from an ongoing NSF ECR grant will also be presented. Last-but-not-least, a call for collaboration amongst leading research universities in the area of online graduate education will be presented and discussed.
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ItemEnvironmental Technologies in the Developing World [Introduction]( 2015-04-21) Brown, JoeDr. Joe Brown introduces the student researchers who presented on water and air issues in Bolivia. The group of 10 undergraduates, two graduate student teaching assistants, and Brown worked with Universidad Mayor de San Andres in La Paz. These presentations are a part of CEE 4803, Environmental Technology in the Developing World. The Joe S. Mundy Global Learning Endowment, designated for international learning experiences for Civil and Environmental Engineering students, provided full funding for the students’ travel.
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ItemPresence/Absence Tests: A Feasible and Low-Cost Alternative Water Quality Test( 2015-04-21) Banner, Brandie ; Gentry, Vernon ; Heidel, Taryn ; Long, Kaitlyn ; Meyer, Melissa ; Yoo, Rebecca
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ItemPersonal Exposure Assessment for Transportation Modes in La Paz( 2015-04-21) Dyess, Chelsea ; Flood, Emily ; Metcalf, Francesca ; Nichols, JeremyVehicle emission regulations are sparse are under enforced in low to middle income countries (LMICs), leading to exceedingly high point source pollutant concentrations in population dense urban areas. Although personal vehicle ownership is low at 68 per 1000 people overall for Bolivia, there is an abundance and large diversity of public transportation methods in La Paz. This project sought to differentiate in terms of commuter exposure levels the multitude of transportation options. Unique to La Paz is the recently installed cable car system, termed locally Mi Teleferico or simply the Teleferico. The main objective was to compare conventional ground based transportation methods (personal vehicle, taxi, micro bus, diesel bus, and walking) to the Teleferico using exposure to criteria air pollutants and their tracers. A focus of the project was to integrate and demonstrate the effectiveness of low cost air monitoring solutions. Using hand held battery-operated monitors for carbon monoxide (CO) and particle matter (PM [2.5um]) and its tracer, black carbon (BC) (all major constituents of exhaust from motor vehicles), main traffic thoroughfares and common commuter routes were identified and then traversed in each of the available forms of transportation. Data was collected during peak emission time frames, namely the morning and evening commuter rush hours. The concentrations and pollutant levels observed along these routes were compared to data collected during the same time of day in the Teleferico cabin. It was found that CO concentrations in the Teleferico cabin were essentially negligible, both during the morning and evening sample times. Concentrations observed on foot were on average slightly higher than those seen on the Teleferico, but did not deviate as much as measurements taken in motor vehicles. CO levels were within 1 ppm in both the personal vehicle and the micro bus, both averaging approximately 23 ppm. The diesel bus CO measurements resulted in an average of 8.82 PPM. BC observations for the personal vehicle, micro bus, and diesel bus were 11.88, 16.73, and 17.14 ug/m3 respectively. These results were in order of magnitude agreement with the PM observations, which were 24.42, 16.81, and 26.41 ug/m3 for the personal vehicle, micro bus, and diesel bus respectively. This data was used to determine unit exposure per time for each of the modes of transportation. The results suggest that there is a clear advantage to utilizing the Teleferico as a mode of transport in terms of pollutant exposure as compared to motorized vehicles. With this data, one could make deterministic calculations as to their pollutant exposure based on commute time and mode of transport. The low cost equipment proved appropriate for this purpose, and could certainly be used for similar personal exposure measurements or for stationary air quality monitoring in locations that do not have the resources for laboratory quality instruments.
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ItemFrom the Eocene to the Anthropocene: An Engineer’s View of Climate Change( 2015-03-24) Clough, G. WayneEngineers are increasingly being called upon to design and construct large-scale coastal flood protection facilities that are expected to have long operational lives. Billions of dollars were spent in New Orleans and billions more are being spent in New York City and New Jersey for protection facilities expected to last for 50 to 100 years or more. A major consideration in such cases is sea level rise due to climate change. The federal government has recently required all agencies to develop long-term plans to address all aspects of climate change. The most recent of these is from the Department of Defense, indicating sea level rise, loss of sea ice, and changing weather patterns are issues of major concern for our national defense and its facilities around the world. Dr. Clough reflects on these growing national issues through the lens of his own experiences beginning with his four-year service as Chair of the National Research Council Committee on New Orleans Regional Hurricane Protection Projects and continuing through his observations of work done by more than 100 Smithsonian scientists related to climate change. As Secretary of the Smithsonian, he was integrally involved in planning to protect Smithsonian museums and facilities that are at risk from storm surges and sea level rise. He concludes with advice about the practical and policy issues that increasingly are facing the engineering profession on matters related to climate change.
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ItemBioengineered Systems for Energy and Environmental Applications( 2015-03-12) Kumar, Amit
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ItemAqueous Organic Chemistry in Atmospheric Aerosols: Impact on Air Quality and Climate( 2015-03-10) McNeill, V. Faye