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Plant Wide Assessment for Johns Manville Waterville Ohio Plant 1 (open access)

Plant Wide Assessment for Johns Manville Waterville Ohio Plant 1

The report describes activites carried out at the palnt to identify energy savings in various energy user systems. The results list areas of energy savings potential and metods of energy savings.
Date: July 2, 2006
Creator: Kissock, Kelly & Thekdi, Arvind
System: The UNT Digital Library
Influences of Flow Transients and Porous Medium Heterogeneity on Colloid-Associated Contaminant Transport in the Vadose Zone (open access)

Influences of Flow Transients and Porous Medium Heterogeneity on Colloid-Associated Contaminant Transport in the Vadose Zone

Radionuclides, metals, and dense non-aqueous phase liquids have contaminated about six billion cubic meters of soil at Department of Energy (DOE) sites. The subsurface transport of many of these contaminants is facilitated by colloids (i.e., microscopic, waterborne particles). The first step in the transport of contaminants from their sources to off-site surface water and groundwater is migration through the vadose zone. Developing our understanding of the migration of colloids and colloid-associated contaminants through the vadose zone is critical to assessing and controlling the release of contaminants from DOE sites. In this study, we examined the mobilization, transport, and filtration (retention) of mineral colloids and colloidassociated radionuclides within unsaturated porous media. This investigation involved laboratory column experiments designed to identify properties that affect colloid mobilization and retention and pore-scale visualization experiments designed to elucidate mechanisms that govern these colloid-mass transfer processes. The experiments on colloid mobilization and retention were supplemented with experiments on radionuclide transport through porous media and on radionuclide adsorption to mineral colloids. Observations from all of these experiments – the column and visualization experiments with colloids and the experiments with radionuclides – were used to guide the development of mathematical models appropriate for describing colloids and colloid-facilitated radionuclide …
Date: July 2, 2006
Creator: Saiers, James & Ryan, Joseph
System: The UNT Digital Library
China Naval Modernization: Implications for U.S. Navy Capabilities - Background and Issues for Congress (open access)

China Naval Modernization: Implications for U.S. Navy Capabilities - Background and Issues for Congress

This report focuses on the implications that certain elements of China’s military modernization may have for future required U.S. Navy capabilities. The issue for Congress addressed in this report is: How should China’s military modernization be factored into decisions about U.S. Navy programs? Congress’s decisions on this issue could significantly affect future U.S. Navy capabilities, U.S. Navy funding requirements, and the U.S. defense industrial base, including the shipbuilding industry.
Date: July 2, 2006
Creator: O'Rourke, Ronald
System: The UNT Digital Library