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Full-Text Articles in Engineering
Mysteerio: Multi-Regional Environmentally Extended Input-Output Model For United States, Yash Srivastava
Mysteerio: Multi-Regional Environmentally Extended Input-Output Model For United States, Yash Srivastava
All Theses
This research work titled My State Environmentally Extended Regional Input-Output (MYSTEERIO) is based on the concept of multi-regional environmentally extended input-output (MREEIO), which is a combination of lifecycle thinking and economics principles. Numerous studies have highlighted the advantages of using this methodology to determine the environmental impacts associated with economic activities for a region. However, no prior attempt has been made to conduct a state-level analysis for the US. This research work thus tries to estimate the impacts embodied due to the consumption of goods and services at the state level by using the MREEIO principles. Extensive coverage of the …
Improvements In The Process Of Biohydrogen Production By Thermotoga Neapolitana, Louis Hill
Improvements In The Process Of Biohydrogen Production By Thermotoga Neapolitana, Louis Hill
All Theses
The production of biological hydrogen is an important process for the future of sustainability and alternative energies. Thermotoga neapolitana is a hyperthermophilic bacterium that produces H 2 , CO2 and acetate via fermentation. The goal of the research was to investigate the sustainable production of H2 gas using waste agricultural feedstocks, recycled water and a simplified N2 sparging method technique. A limited sparging method was developed which includes 1 minute of N2 gas sparging of the reactor headspace and 90 minutes of idle reaction time for cysteine-HCl to react with dissolved oxygen prior to inoculation. This …
Durability Of Reinforced Concrete Incorporating Crushed Waste Brick As Coarse Aggregate, Matthew Adamson
Durability Of Reinforced Concrete Incorporating Crushed Waste Brick As Coarse Aggregate, Matthew Adamson
All Theses
Using crushed bricks as aggregates in concrete is of particular interest to preserve natural aggregate sources as well as to reduce waste, as it has been estimated that 10% to 30% of all waste in landfills in the united States comes from construction and demolition wastes. By recycling some of these wastes, the sustainability of a project can be improved. However, it is important concrete incorporating these wastes is as durable or more durable then conventional concrete, or will it have a shorter service life. Durability of concrete is its ability to resist deterioration from its external environment such as …
Identifying Barriers To Address During The Delivery Of Sustainable Building Renovation Projects, Corey Cattano
Identifying Barriers To Address During The Delivery Of Sustainable Building Renovation Projects, Corey Cattano
All Theses
Architects, engineers, and contractors are continuously searching for tools and methods to reduce the unique risks associated with the delivery of construction projects. Since national policies to reduce carbon emissions and energy consumption will require drastic improvements to the existing building stock, one specific area in need of such tools is the sustainable renovation of existing buildings. The purpose of this research is to identify the barriers to address during the delivery of sustainable renovation projects and offer solutions that overcome these barriers. For example, typical renovation projects do not coordinate energy retrofits with building system renovations, resulting in poor …
Comparing Problem-Based Learning And Lecture As Methods To Teach Whole-Systems Design To Engineering Students, Michael Dukes
Comparing Problem-Based Learning And Lecture As Methods To Teach Whole-Systems Design To Engineering Students, Michael Dukes
All Theses
The objective of this research is to compare problem-based learning and lecture as methods to teach whole-systems design to engineering students. A case study, Appendix A, exemplifying successful whole-systems design was developed and written by the author in partnership with the Rocky Mountain Institute. Concepts to be tested were then determined, and a questionnaire was developed to test students' preconceptions. A control group of students was taught using traditional lecture methods, and a sample group of students was taught using problem-based learning methods. After several weeks, the students were given the same questionnaire as prior to the instruction, and the …