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Articles 31 - 56 of 56
Full-Text Articles in Engineering
Consent Decrees, Fall/Winter 2017, Issue 35
Human Ecology, Spring/Summer 2016, Issue 34
Citizen Science, Fall/Winter 2016, Issue 33
Urban Streams, Spring/Summer 2015, Issue 32
Unconventional Energy, Fall/Winter 2015, Issue 31
Unconventional Energy, Fall/Winter 2015, Issue 31
Sustain Magazine
No abstract provided.
Carbon Neutral, Spring/Summer 2018, Issue 38
Political Will, Fall/Winter 2018, Issue 37
Our Envirome, Spring/Summer 2019, Issue 40
Plastic Pollution, Fall/Winter 2019, Issue 39.3
Plastic Pollution, Fall/Winter 2019, Issue 39.3
Sustain Magazine
No abstract provided.
Plastic Pollution, Fall/Winter 2019, Issue 39.2
Plastic Pollution, Fall/Winter 2019, Issue 39.2
Sustain Magazine
No abstract provided.
Plastic Pollution, Fall/Winter 2019, Issue 39
Function, Meaning, And Message Of The Natural Environtment In The Story Of Keong Mas, Adinda Bunga Utami, Nanny Sri Lestari
Function, Meaning, And Message Of The Natural Environtment In The Story Of Keong Mas, Adinda Bunga Utami, Nanny Sri Lestari
International Review of Humanities Studies
This research discusses the meaning and function of the natural environment in one folk tale that is well known in the Javanese community. This folktale is known in all circles of society, despite having social differences. An interesting problem in this folklore is the placement of functions and environmental meanings as the main elements of stories or tales. The focus of this research is to raise the function and meaning of the natural environment contained in one story of Keong Mas. This study aims to explain carefully the function and meaning of the natural environment which is the background of …
Financial Feasibility Of Leed Certified Buildings For Developers And Investors, Erik P. Henriksen
Financial Feasibility Of Leed Certified Buildings For Developers And Investors, Erik P. Henriksen
Construction Management
This is a case study on a small to mid-size private equity firm that deals with real estate development as well as investment to find out the financial feasibility of LEED certified buildings in today’s building climate. Interviews with two investment analysts at this firm who are versed in LEED certification about how it is looked at in their company as well as the broader industry will give insights into the feasibility of developing or investing in environmentally friendly buildings. This impacts the real estate and construction industries due to the fact that developers and investors are often times a …
Determination Of Cleaning Frequency And Power Enhancement Of Photovoltaic Panels Using Novel Cleaning Approach, Ali Hasan Shah
Determination Of Cleaning Frequency And Power Enhancement Of Photovoltaic Panels Using Novel Cleaning Approach, Ali Hasan Shah
Electrical Engineering Theses
Dust accumulation on the photovoltaic (PV) surface decreases the solar radiation penetration to the PV cells and eventually the power production from the PV system. In order to prevent the dust-based power losses, the PV systems are required to be cleaned frequently depending upon different geographical locations, PV integration schemes, and the scale of the PV power plant. In large-scale power plants, the PVs are periodically cleaned traditionally by water sprinkling that requires sophisticated equipment mobile equipment that at the best involves robotics and hence calls for substantial capital investment as well as water consumption. Since most of the largescale …
Innovative Schematic Concept Analysis For A Space Suit Portable Life Support Subsystem, M. Schuller, R. Kobrick, T. Lalk, L. Wiseman, F. Little, Et Al.
Innovative Schematic Concept Analysis For A Space Suit Portable Life Support Subsystem, M. Schuller, R. Kobrick, T. Lalk, L. Wiseman, F. Little, Et Al.
Ryan L. Kobrick
Conceptual designs for a space suit Personal Life Support Subsystem (PLSS) were developed and assessed to determine if upgrading the system using new, emerging, or projected technologies to fulfill basic functions would result in mass, volume, or performance improvements. Technologies were identified to satisfy each of the functions of the PLSS in three environments (zero-g, Lunar, and Martian) and in three time frames (2006, 2010, and 2020). The viability of candidate technologies was evaluated using evaluation criteria such as safety, technology readiness, and reliability. System concepts (schematics) were developed for combinations of time frame and environment by assigning specific technologies …
Space Suit Concepts And Vehicle Interfaces For The Constellation Program, D. M. Klaus, J. Metts, R. Kobrick, M. Mesloh, T. Monk, Et Al.
Space Suit Concepts And Vehicle Interfaces For The Constellation Program, D. M. Klaus, J. Metts, R. Kobrick, M. Mesloh, T. Monk, Et Al.
Ryan L. Kobrick
In carrying out NASA’s Vision for Space Exploration, a number of different environments will be encountered that will require the crew to wear a protective space suit. Specifically, four suited mission phases are identified as Launch, Entry & Abort profiles, Contingency 0g (orbital) Extravehicular Activity (EVA), Lunar Surface EVA and Martian Surface EVA. This study presents conceptual design solutions based on a previous architecture assessment that defined space suit operational requirements for four proposed space suit configuration options. In addition, a subset of vehicle interface requirements are defined for enabling umbilical and physical connections between the suits and the various …
Developing Abrasion Test Standards For Evaluating Lunar Construction Materials, Ryan L. Kobrick, David M. Klaus, Kenneth W. Street
Developing Abrasion Test Standards For Evaluating Lunar Construction Materials, Ryan L. Kobrick, David M. Klaus, Kenneth W. Street
Ryan L. Kobrick
Operational issues encountered by Apollo astronauts relating to lunar dust were catalogued, including material abrasion that resulted in scratches and wear on spacesuit components, ultimately impacting visibility, joint mobility and pressure retention. Standard methods are being developed to measure abrasive wear on candidate construction materials to be used for spacesuits, spacecraft, and robotics. Calibration tests were conducted using a standard diamond stylus scratch tip on the common spacecraft structure aluminum, Al 6061-T6. Custom tips were fabricated from terrestrial counterparts of lunar minerals for scratching Al 6061-T6 and comparing to standard diamond scratches. Considerations are offered for how to apply standards …
How Moisture Content Levels And Packing Density In Soil Affect Crude Oil Spreads, Shaylin N. Williams
How Moisture Content Levels And Packing Density In Soil Affect Crude Oil Spreads, Shaylin N. Williams
Venture: The University of Mississippi Undergraduate Research Journal
Crude oil spills are one of the most destructive disasters that can occur, and they are extremely difficult to recover from. Many studies focus on what can be done to clean these crude oil spills, but more research should be focused on means of prevention. Currently, very little is known about how the moisture content levels and the packing efficiency of soil can affect an oil spill. These two factors alone can offer a variety of information to environmental agencies, manufacturers, and refineries. Through utilization of a chemical engineering lab, a recording mechanism, and ImagePro software, data was collected and …
Low Frequency Injection As A Method Of Low-Level Dc Microgrid Communication, Matthew Davidson
Low Frequency Injection As A Method Of Low-Level Dc Microgrid Communication, Matthew Davidson
Theses and Dissertations
In the last ten years, DC microgrid approaches have gained more popularity for the interconnection of distributed energy resources (DERs) and prosumers. The devices (generation, storage, and load) connected to the network may contain operational parameters that have the ability to be adjusted in real-time as to optimize the operation of the microgrid. In this thesis, a simple unidirectional global communication scheme is defined, implemented, and tested. The proposed approach relies on low frequency sinusoidal components that are injected into the DC microgrid power lines. Using the proposed communication approach, multiple parameters can be transmitted to the devices connected to …
Production Of Anti-Corrosion Materials From Uae Date Palm Waste, Nour Shehadeh Abdelrahman
Production Of Anti-Corrosion Materials From Uae Date Palm Waste, Nour Shehadeh Abdelrahman
Theses
Palm tree serves as the main source of biomass in the Gulf countries. The United Arab Emirates (UAE) alone is blessed with more than 40 million date palm trees, which generate a huge amount of waste annually. The main objective of this thesis is to examine the ability to produce a corrosion inhibitor from a date palm tree, waste, starting by extracting lignin from different parts of the date palm tree and characterizing the extracted lignin, converting lignin to sodium lignosulfonate, while selecting the optimum condition for the conversion reaction and characterizing the prepared lignosulfonate. Finally, the corrosion efficiency for …
Venezuela Undermines Gold Miner Crystallex's Attempts To Recover On Its Icsid Award, Sam Wesson
Venezuela Undermines Gold Miner Crystallex's Attempts To Recover On Its Icsid Award, Sam Wesson
Loyola of Los Angeles International and Comparative Law Review
No abstract provided.
Elaboración Del Manual De Técnicas Sostenibles En Prácticas De Ecoturismo En Zonas De Postconflicto: Caso De Estudio Cubarral, Meta, Paula Carolina Perez Camargo
Elaboración Del Manual De Técnicas Sostenibles En Prácticas De Ecoturismo En Zonas De Postconflicto: Caso De Estudio Cubarral, Meta, Paula Carolina Perez Camargo
Ingeniería Ambiental y Sanitaria
La ruta de los ríos Casanare y Guayabero es un área marginada por el conflicto armado, atrasada en aspectos sociales y económicos, con poca infraestructura de acceso; además de un desconocimiento colectivo de su riqueza natural en términos de biodiversidad y paisaje. Para el óptimo aprovechamiento de todos los recursos que esta región posee es necesaria la elaboración de una estrategia de ecoturismo que vincule los aspectos ambientales y económicos y permita su máximo aprovechamiento, generando ingresos para los habitantes de la zona y una alternativa turística para sus visitantes. Es por lo anterior que se eligió el caso de …
Experimental Evaluation Of A Uwb-Based Cooperative Positioning System For Pedestrians In Gnss-Denied Environment, Jelena Gabela, Guenther Retscher, Salil Goel, Harris Perakis, Andrea Masiero, Charles Toth, Vassilis Gikas, Allison Kealy, Zoltan Koppanyi, Wioleta Blaszczak-Bak, Yan Li, Dorota Grejner-Brzezinska
Experimental Evaluation Of A Uwb-Based Cooperative Positioning System For Pedestrians In Gnss-Denied Environment, Jelena Gabela, Guenther Retscher, Salil Goel, Harris Perakis, Andrea Masiero, Charles Toth, Vassilis Gikas, Allison Kealy, Zoltan Koppanyi, Wioleta Blaszczak-Bak, Yan Li, Dorota Grejner-Brzezinska
SMART Infrastructure Facility - Papers
Cooperative positioning (CP) utilises information sharing among multiple nodes to enable positioning in Global Navigation Satellite System (GNSS)-denied environments. This paper reports the performance of a CP system for pedestrians using Ultra-Wide Band (UWB) technology in GNSS-denied environments. This data set was collected as part of a benchmarking measurement campaign carried out at the Ohio State University in October 2017. Pedestrians were equipped with a variety of sensors, including two different UWB systems, on a specially designed helmet serving as a mobile multi-sensor platform for CP. Different users were walking in stop-and-go mode along trajectories with predefined checkpoints and under …
Cadmium Sulfide-Buffered Pv Systems: Assessing The Environmental, Health, And Economic Impacts, Maqsood Ali Mughal, Rajesh Sharma
Cadmium Sulfide-Buffered Pv Systems: Assessing The Environmental, Health, And Economic Impacts, Maqsood Ali Mughal, Rajesh Sharma
Journal of the Arkansas Academy of Science
As the world’s population continues to grow, global energy crises are expected to rise in the future, thus accelerating the demand for renewable energy technology, particularly solar photovoltaics. The energy sector will face an increasingly complex array of interlocking challenges - technological, environmental, health, economic, and regulatory. In this paper, we study CdS, a widely used buffer material in thin film photovoltaics, to assess and monetize environmental, health, and socio-economic externalities associated with the use of the material. Currently, CdS has a significant advantage over other alternate buffer materials in terms of efficiency and low-cost production of large-area processing of …
The Role Of The Built Environment In Transforming Underserved Neighborhoods Into Smart And Connected Communities, Mary Claire Nabors
The Role Of The Built Environment In Transforming Underserved Neighborhoods Into Smart And Connected Communities, Mary Claire Nabors
All ETDs from UAB
The goal of this report is to create a model for transforming underserved neighborhoods into smart, connected, healthy, and sustainable communities by focusing on the built environment. To do this, there must be a thorough neighborhood analysis of the existing conditions with recommendations for what needs to be done, both short term and long term. The built environment impacts many aspects of a neighborhood and the quality of life for residents. Sidewalks, streets, lighting, landscaping, and accessibility are all components of the built environment and research has continuously shown how the deterioration of the built environment affects the health and …
Agenator: An Open Source Computer-Controlled Dry Aging System For Beef, Soon Kiat Lau, Felipe Azevedo Ribeiro, Jeyamkondan Subbiah, Chris R. Calkins
Agenator: An Open Source Computer-Controlled Dry Aging System For Beef, Soon Kiat Lau, Felipe Azevedo Ribeiro, Jeyamkondan Subbiah, Chris R. Calkins
Biological Systems Engineering: Papers and Publications
Dry aging of beef is a process where beef is exposed to a controlled environment with the ultimate goal of drying the beef to improve its quality and value. Comprehensive investigations into the effects of various environmental conditions on dry aging are crucial for understanding and optimizing the process, but the lack of affordable equipment focused on data collection makes it difficult to do so. The Agenator was thus developed as an open source system with a suite of features for investigating dry aging such as: measuring and recording relative humidity, temperature, mass, air velocity, and fan rotational speed; precise …