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Filtering by: Date issued sim 2019-11-25 Resource Type Masters Thesis

The Influence of Lithology on Stream Metabolism in Mountain Systems

Creator:

Cargill, Samantha K.

Abstract:

Physical disturbance in streams has important effects on the metabolic rates of gross primary production (GPP) and ecosystem respiration (ER). Underlying lithology can control sediment size, amount, and evolution in the stream, influencing substrate stability and its effect on benthic organisms. We assessed the patterns of disturbance and recovery of...

Resource Type:

Masters Thesis
Synthesis of Heterostructured Aluminum-magnesium System with Extreme Specific Strength Through the Application of High-pressure Torsion

Creator:

Han, Jae-Kyung

Abstract:

Processing of metals through the application of high-pressure torsion (HPT) provides significant grain refinement in bulk metals at ambient temperatures. The ultrafine-grained (UFG) materials processed by HPT generally demonstrate the superior physical and mechanical characteristics. For utilizing the benefit of HPT, the feasibility of conventional HPT processing was demonstrated recently...

Resource Type:

Masters Thesis
Synthesis and Characterization of an Ultrafine-Grained Aluminum-Copper System through High-Pressure Torsion

Creator:

Liang, Guangyuan

Abstract:

Aluminum and copper and their alloys have been widely used due to relatively high strength-to-weight ratios compared with conventional steels. Processing of these alloys is typically conducted at high temperatures over extended time periods. High-pressure torsion (HPT) is a promising processing technique for introducing significant grain refinement leading to excellent...

Resource Type:

Masters Thesis