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ETD
  • All fields: cooling
(28 results)



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    • A Uintan (Late Middle Eocene) Flora and Fauna from the Uinta Basin, Utah

    • Sandau, Stephen Dee 1964-

    • Late Middle Eocene time marks one of the most dynamic periods of the Paleogene in the western interior of North America. Analysis of an extensive, new collection of plant, invertebrate, and vertebrae fossils from the Uinta Formation in the Uinta...
    • ETD



    • Active Noise Control of a Two-Fan Exhaust-Mounted Array Using Near-Field Control Sources and Error Sensors

    • Rust, Ryan Leonard 1982-

    • Multiple fans are sometimes used in an array configuration to cool various types of electronic equipment. In addition to adding another noise source, using two fans with closely spaced blade passage frequencies (BPF) can create an annoying beat...
    • ETD



    • Approximate Thermal Modeling of Radiofrequency Cardiac Ablation

    • Walter, Aaron Joseph 1977-

    • The ultimate objective of the research which led to this thesis is to increase the efficacy and safety of radiofrequency catheter ablation (RFCA) of cardiac tissue. The purpose of RFCA is to carefully heat selected locations in the heart. The...
    • ETD



    • Axial Temperature Gradients in Gas Chromatography

    • Contreras, Jesse Alberto

    • The easiest and most effective way to influence the separation process in gas chromatography (GC) is achieved by controlling the temperature of the chromatographic column. In conventional GC, the temperature along the length of the column is...
    • ETD



    • Comparison of 3-D Friction Stir Welding Viscoplastic Finite Element Model with Weld Data and Physically-Simulated Data

    • Posada, Maria

    • Models (both physical and numerical) of the friction stir (FS) welding process are used to develop a greater understanding of the influence of independent process parameters on dependent process output variables, such as torque, power, specific...
    • ETD



    • Continuous Co-Separation by Liquid Absorption in Aqueous Cuprous Chloride (CuCl) and Magnesium Chloride (MgCl2) Solution

    • Foster, Paul J 1978-

    • The purpose of the research was to design, build, test, and recommend a process to economically separate CO from a gas mixture of CO, CO2, and O2. The general method considered in this research to accomplish the separation was liquid absorption in...
    • ETD



    • Deposition of Particulate from Coal-Derived Syngas on Gas Turbine Blades Near Film Cooling Holes

    • Ai, Weiguo 1972-

    • Synfuel from gasification of coal, biomass, and/or petroleum coke is an alternative to natural gas in land-based industrial gas turbines. However, carryover fine particulate in the syngas may lead to a considerable amount of deposition on turbine...
    • ETD



    • Development and Characterization of Friction Bit Joining: A New Solid State Spot Joining Technology Applied to Dissimilar Al/Steel Joints

    • Siemssen, Brandon Raymond 1984-

    • Friction bit joining (FBJ) is a new solid-state spot joining technology developed in cooperation between Brigham Young University of Provo Utah, and MegaStir Technologies of West Bountiful Utah. Although capable of joining several different...
    • ETD



    • Development of a Strontium-87 Ion Interferometer

    • Erickson, Christopher Joseph

    • I present the construction of a low-velocity intense source (LVIS) of laser-cooled neutral strontium using permanent ring magnets. The LVIS consists of a magneto-optical trap from which cold strontium is extracted in a well-collimated beam. I also...
    • ETD



    • Error Sensor Placement for Active Control of an Axial Cooling Fan

    • Shafer, Benjamin M 1979-

    • Recent experimental achievements in active noise control (ANC) for cooling fans have used near-field error sensors whose locations are determined according to a theoretical condition of minimized sound power. A theoretical point source model, based...
    • ETD



    • Evolution and Emergence of the Hinterland in the Active Banda Arc-Continent Collision: Insights From the Metamorphic Rocks and Coral Terraces of Kisar, Indonesia

    • Major, Jonathan R

    • Coral terrace surveys and U-series ages of coral and mollusk shells yield a surface uplift rate of ~0.6 m/ka for Kisar Island. The small island is located NE of Timor in the active Banda Arc of Indonesia. Based on this rate, Kisar first emerged...
    • ETD



    • Exhumation Mechanisms of the Greater Himalayan Sequence, Garhwal Region, India

    • Spencer, Christopher James

    • Geothermobarometric, micro- and macro-structural data indicate that peak metamorphic pressure and temperature of the Greater Himalayan Sequence (GHS) of the Garhwal Region of India increase dramatically across the Main Central Thrust (MCT)....
    • ETD



    • Feedback Applications in Active Noise Control for Small Axial Cooling Fans

    • Green, Matthew J 1978-

    • Feedback active noise control (ANC) has been applied as a means of attenuating broadband noise from a small axial cooling fan. Such fans are used to maintain thermal stability inside of computers, projectors, and other office equipment and home...
    • ETD



    • Friction Bit Joining of 5754 Aluminum to DP980 Ultra-High Strength Steel: A Feasibility Study

    • Weickum, Britney

    • In this study, the dissimilar metals 5754 aluminum and DP980 ultra-high strength steel were joined using the friction bit joining (FBJ) process. The friction bits were made using one of three steels: 4140, 4340, or H13. Experiments were performed...
    • ETD



    • Investigation of Heterogeneity of FSW Inconel 718 Coupled with Welding Thermal Cycle

    • Huang,Dong Fang 1969-

    • In order to develop a better understanding of the property, microstructure evolution and thermal history of FSW Inconel 718’s, the strain, strain rate and thermal cycles need to be determined. In order to estimate the strain field of a deformed...
    • ETD



    • Magmatic Sulfur and Chlorine Abundances at Stromboli, Italy and their Role in the Formation of Vesicle-hosted Metal Alloys

    • Baxter,Nichelle Lynn 1984-

    • Strand et al. (2002) discovered small metal alloy grains rich in Cu, Co, and Sn (maximum size 150 µm) in vesicles of lava from Kilauea Volcano. These alloys are also found in basaltic rocks of several Italian volcanoes. To better understand the...
    • ETD



    • Methods for Identifying Acoustic Emissions From the Front Face of a Small Piezoelectric Blower

    • Solomon, Brad K.

    • This thesis focuses on identifying acoustic noise generating components in piezoelectric blowers through transverse velocity measurements and the development of a numerical fluid model. Piezoelectric ceramics have proven useful for many industries...
    • ETD



    • Microstructure Evolution in 304L Stainless Steel Subjected to Hot Torsion at Elevated Temperature

    • Lu, Jian

    • The current study focus on investigating a relationship between processing variables and microstructure evolution mechanism in 304L stainless steel subjected to hot torsion. The Gleeble 3800 with Mobile Torsion Unit (MTU) is utilized in the current...
    • ETD



    • Optimization of Active Noise Control for Small Axial Cooling Fans

    • Monson, Brian B 1979-

    • Previous work has shown that active noise control is a feasible solution to attenuate tonal noise radiated by small axial cooling fans, such as those found in desktop computers. One such control system reduced noise levels of a baffled 80-mm fan in...
    • ETD



    • Optimization of Control Source and Error Sensor Locations in Free Field Active Noise Control

    • Duke, Connor Raymond 1981-

    • Previous work has shown that active noise control (ANC) can be applied to axial cooling fans. Optimization of the control source and error sensor placement is desired to maximize the attenuation using ANC. A genetic algorithm was developed to...
    • ETD

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