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Articles 1 - 4 of 4
Full-Text Articles in Engineering
Contact Dewatering Of Cellulose Nanofibers For Biopolymer Composite Applications, Alexander Collins
Contact Dewatering Of Cellulose Nanofibers For Biopolymer Composite Applications, Alexander Collins
Electronic Theses and Dissertations
Cellulose Nanofibrils (CNFs) are promising materials for reinforcement of polymer matrices attributable to their impressive physical and mechanical properties, as well as their biodegradability. However, the utilization of these materials in composites is made challenging by the water content of CNF slurries, the tendency of CNFs to agglomerate as they dry, and incompatibility between hydrophilic CNFs and hydrophobic polymer matrices. The most commercially viable drying methods to produce small-scale dry CNFs, such as spray drying, are very energy intensive, can only dry the materials down to micron-scale agglomerates, and do not preserve fibrillar aspect ratios. “Contact dewatering,” or the removal …
Quantifying Spatial Heterogeneity Of Wild Blueberries And Crop Water Stress Monitoring Using Remote Sensing Technologies, Kallol Barai
Quantifying Spatial Heterogeneity Of Wild Blueberries And Crop Water Stress Monitoring Using Remote Sensing Technologies, Kallol Barai
Electronic Theses and Dissertations
The wild blueberry is one of the major crops of Maine, with significant economic value and potential health benefits. Due to global climate change, drought impacts have been increasing significantly in recent years in the northeast region of the USA, causing significant economic losses in the agricultural sectors. It has been predicted to increase further in the future. Changing patterns of the elevated atmospheric temperatures, increased rainfall variabilities, and more frequent drought events have made the wild blueberry industry of Maine vulnerable, suggesting the adoption of novel approaches to mitigate the negative impacts of global climate changes. Also, wild blueberry …
Comparative Life Cycle Assessment Of Embodied Carbon And Operational Energy Of Different Building Systems, Marilia Hellmeister
Comparative Life Cycle Assessment Of Embodied Carbon And Operational Energy Of Different Building Systems, Marilia Hellmeister
Electronic Theses and Dissertations
Due to human activity, the levels of carbon emissions found in the atmosphere have reached its highest concentration and therefore it is necessary to find solutions to reduce, mitigate and adapt to a more sustainable pattern of development. The substitution of fossil fuel-dependent materials with renewable materials which exhibit lower embodied carbon is an option to be considered in the design phase of a building. Engineered wood product innovations over the past twenty years, coupled with design innovation and building code modifications have demonstrated their viability in multi-story construction (18 stories). The goals of this project are to 1) estimate …
Yield And Mechanical Properties Of Veneer From Maine-Grown Eastern Spruce And Balsam Fir, Marshal Bertrand
Yield And Mechanical Properties Of Veneer From Maine-Grown Eastern Spruce And Balsam Fir, Marshal Bertrand
Electronic Theses and Dissertations
This research focused on the utilization of Maine Eastern spruce and balsam fir for veneer production. Maine currently has no manufacturers of or products using structural veneer. The diversification of markets for Maine’s softwoods has been identified as a route to increase the resilience of the forest-based economy. Veneer production technology has improved significantly since the last look at Maine spruce veneer (1969), justifying the reinvestigation of Maine spruce-fir veneer. The objective of this research was to provide information on the yield of processing veneer and the quality of said veneer. A sample size of 37 Eastern spruce and 38 …