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Articles 1 - 6 of 6
Full-Text Articles in Other Engineering Science and Materials
Quantifying Temperature-, Pressure-, And Nuclear Quantum Effects On Hydrophobic And Hydrophilic Water-Mediated Interactions, Justin T. Engstler
Quantifying Temperature-, Pressure-, And Nuclear Quantum Effects On Hydrophobic And Hydrophilic Water-Mediated Interactions, Justin T. Engstler
Dissertations, Theses, and Capstone Projects
Water-mediated interactions (WMIs) are responsible for diverse processes in aqueous solutions, including protein folding and nanoparticle aggregation. WMI may be affected by changes in temperature and pressure, and hence, they can alter chemical/physical processes that occur in aqueous environments. Traditionally, attention has been focused on hydrophobic interactions while, in comparison, the role of hydrophilic and hybrid (hydrophobic–hydrophilic) interactions have been mostly overlooked. Here, we study the role of T and P on the WMI between nanoscale (i) hydrophobic–hydrophobic, (ii) hydrophilic–hydrophilic, and (iii) hydrophilic–hydrophobic pairs of (hydroxylated/non-hydroxylated) graphene-based surfaces. We find that hydrophobic, hydrophilic, and hybrid interactions are all sensitive to …
Integrating Steel Slag Aggregates Into Asphalt Paving By Harmonizing Availability, Quality, Economics, And The Environment, Timothy R. Murphy
Integrating Steel Slag Aggregates Into Asphalt Paving By Harmonizing Availability, Quality, Economics, And The Environment, Timothy R. Murphy
Theses and Dissertations
This thesis provides guidance on how to balance matters related to the environmental stewardship, market sources, origin and uses, material properties, performance, and economic impact of using slag materials in pavements. The literature on this topic provides numerous references on the use of slag materials for specific applications, and this thesis aims to make use of those references along with other data from the author to describe slag materials from a holistic perspective and provide some suggestions for balancing several factors that impact optimal use of this resource within pavement structures. Discussion is given to the increased importance of recycling …
Pour-Over Coffee Stand With Warmer, Francesca Patawaran
Pour-Over Coffee Stand With Warmer, Francesca Patawaran
Honors Theses
This project sought to demonstrate the process of bringing a new product into the market, from the initial design and prototyping stage to marketing and, ultimately, mass production. As part of the curriculum of The Haley Barbour Center for Manufacturing Excellence (CME), the project team manufactured fifteen Pour-Over Coffee Stands with electric heating components. We first created a 3D model of the proposed design, ensuring that all components fit together in an assembly. Next, we worked with the lab technicians to create a prototype of the product. Then, we refined the manufacturing process to eliminate waste where possible. Throughout the …
Soil Respiration Measurements Reveal High Retention Of Organic Carbon From Corn Residue Derived High-Lignin Fermentation Byproduct Enabling Sustainable Lignocellulosic Biofuel Production, Michelle Sun Wang
Dartmouth College Master’s Theses
While 2G biofuel production can utilize non-edible, lignocellulosic feedstocks such as agricultural residues to produce liquid fuel, harvesting crop residues is unsustainable without careful management of the soil underneath. By harvesting a fraction of the crop residues left in the field after harvest, soil health can diminish and critically, the soil organic carbon (SOC) stored in agricultural fields can decrease. Currently, in the most popular 2G process models published, the issue of soil degradation remains unresolved with residue harvest strategies receiving considerable attention in the literature and other SOC management strategies receiving far less. Specifically, the strategy of returning the …
Influence Of Processed Natural Black Sand Vs. Natural White Sand And Silica Flour As Additives To Oil-Well Cementing Applications, Ramy Abuel Maaty
Influence Of Processed Natural Black Sand Vs. Natural White Sand And Silica Flour As Additives To Oil-Well Cementing Applications, Ramy Abuel Maaty
Theses and Dissertations
Cementing is a crucial and fundamental step in the process of drilling wells to extract oil from its reservoirs. Cementing main functions are to achieve zonal isolation and provide mechanical support to the casing. Impermeable and powerful cement is strongly desired to withstand high pressures and temperatures during the lifetime of the producing wells. Various additives to cement, such as silica flour, fly ash, Nano-additives and other advanced materials have been used and tested to attain improved cement of higher quality and enhanced properties such as permeability, porosity, mechanical and rheological properties. Very few researches have discussed the uses of …
Development Of Inconel 718f And Inconel 718e Powders For Parts Manufacturing Utilizing Binder Jet Three-Dimensional Printing And Compressed Pellet Methods, Duncan Eric Manor Ii
Development Of Inconel 718f And Inconel 718e Powders For Parts Manufacturing Utilizing Binder Jet Three-Dimensional Printing And Compressed Pellet Methods, Duncan Eric Manor Ii
Graduate Theses, Dissertations, and Problem Reports
Alloy Inconel 718 is a Ni based superalloy used for high temperature applications including turbine blades, turbocharger rotors and nuclear reactors. Inconel 718 is a popular commercial atomized powder that has limitations in performance for use in additive manufacturing applications due to poor part quality and efficiency of current fabrication methods. Developing new compositions and additive manufacturing (AM) methodologies of IN718 is critical to improve the quality and the efficiency of IN718 parts manufacturing. Developing new additive manufacturing methodology that produces higher quality parts made of IN718 as compared to current methods has the potential to greatly impact industry, academia, …