Index Catalog // ScholarsArchive@OSU

Experimental Investigation of the Transition to Natural Convection in HTGR Applications using the Oregon State SFSETF

Creator:: Fishler, Joshua D.
Abstract:: High Temperature Gas Reactors (HTGRs) are positioned to disrupt local and global markets via their unique ability to produce carbon-free process heat, high efficiency power generation, and passively safe operational features. However, significant impediments still exist to delay deployment of this particular technology, including a lack of experimental data, verified...
Resource Type:: Dissertation
Full Text:: this particular technology, including a lack of experimental data, verified code application, and

A moving boundary model of calcium alginate gel formation and the estimation of diffusion and mass transfer coefficients

Creator:: Inoue, Shawna K.
Abstract:: Calcium alginate gels are widely used in the biotechnology, food, and pharmaceutical industries for cell immobilization, food additives, and controlling the release of therapeutic agents. Different gelation conditions can lead to different gel structures which affects the diffusion of solutes in gels, thus mathematical models were developed to describe diffusion...
Resource Type:: Dissertation
Full Text:: Formation and the Estimation of Diffusion and Mass Transfer Coefficients by Shawna K. Inoue A

Generalized modal analysis of electromagnetic- and quantum-waveguide structures and discontinuities

Creator:: Weisshaar, Andreas
Abstract:: Generalized modal analysis techniques for the characterization and modeling of dissipationless planar waveguide structures and discontinuities encountered in microwave and optical integrated circuits, as well as of quantum waveguide structures and devices, are presented. The frequency-dependent transmission properties of the curved microstrip bend are derived by utilizing a second-order perturbation...
Resource Type:: Dissertation
Full Text:: given by R 1 if,2 Re = + 2- K +(We W)we' (3.4) The above effective radius assures a positive value of

Sub-diffraction light propagation and imaging in planar negative refraction waveguides

Creator:: Wangberg, Robyn
Abstract:: In this dissertation we study the electromagnetic properties of planar waveguides with non-magnetic strongly anisotropic dielectric cores. We develop an analytical description of the mode propagation in these systems and show that the index of refraction can be either positive or negative depending on the specific material parameters. Propagating modes...
Resource Type:: Dissertation
Full Text:: speed of light in a vacuum. Solutions of this equation are waves of the form; exp[i(�k̇�x − ωt)]. The

Electromagnetic properties of anisotropic plasmonic metamaterials

Creator:: Elser, Justin Lee
Abstract:: In this dissertation we study the electromagnetic properties of plasmonic metamaterials. We develop an analytical description to solve the fundamental problem of free-space scattering in planar plasmonic systems by utilizing anisotropic metamaterials. We show with exact numerical simulations that these manufactured materials do completely eliminate the scattering, and even in...
Resource Type:: Dissertation
Full Text:: in the dispersion relation k2x + k 2 y + k 2 z = ǫµk 2 (1.15) In the case of a 2D anisotropic

A microscopic study of the interaction between aliovalent dopants and native defects in group IV oxides : indium and cadmium in ceria and zirconia

Creator:: Zacate, Matthew O.
Abstract:: In order to understand better the defect structure and dynamics associated with lower valent dopants complexed with native defects in group IV oxides, In/Cd perturbed angular correlation spectroscopy was performed in ceria and zirconia. Examining the orientation symmetry axis of defects in ceria single crystals at low temperature has allowed...
Resource Type:: Dissertation
Full Text:: ]. The regions in the phase diagram above 700 K between Ce02 and Ce01.8 are not well understood. The a

Computational nanooptics in hyperbolic metamaterials and plasmonic structures

Creator:: Thongrattanasiri, Sukosin
Abstract:: This dissertation concerns several problems in the fields of light interaction with nanostructured media, metamaterials, and plasmonics. We present a technique capable of extending operational bandwidth of hyperbolic metamaterials based on interleaved highly-doped InGaAs and undoped AlInAs multilayer stacks. The experimental results confirm theoretical predictions, exhibiting broadband negative refraction response...
Resource Type:: Dissertation
Full Text:: : ____________________________________________________________ Viktor A. Podolskiy

Preliminary framework for the run-ahead predictive simulation software (RAPSS)

Creator:: Makinson, Kevin A.
Abstract:: The Run-Ahead Predictive Simulation Software (RAPSS) is an architecture designed for faster-than-real-time decision support for operators of complex networks. To enable further development of the RAPSS methodology, the necessary proof of principle is illustrated in two applications: decision support for shift technical advisors in nuclear power plant control rooms (RAPSS-STA),...
Resource Type:: Dissertation
Full Text:: AN ABSTRACT OF THE DISSERTATION OF Kevin A

Design, construction, and characterization of a neutron depth profiling facility at the Oregon State University TRIGA® reactor with an advanced digital spectroscopy system

Creator:: Robinson, Joshua A.
Abstract:: In this work, Neutron Depth Profiling (NDP) analysis capability has been added to the Oregon State University TRIGA® Reactor Prompt Gamma Neutron Activation Analysis Facility (PGNAA). This system has been implemented with an advanced digital spectroscopy system and is capable of rise time pulse shape analysis as well as coincidence...
Resource Type:: Dissertation
Full Text:: AN ABSTRACT OF THE DISSERTATION OF Joshua A

A thin codimension-one decomposition of the Hilbert Cube

Creator:: Phon-On, Aniruth
Abstract:: For cell-like upper semicontinuous(usc) decompositions G of finite dimensional manifolds M, the decomposition space M/G turns out to be an ANR provided M/G is finite dimensional ([Dav07], page 129 ). Furthermore, if M/G is finite dimensional and has the Disjoint Disks Property (DDP), then M/G is homeomorphic to M ([Dav07],...
Resource Type:: Dissertation
Full Text:: cell-like decomposition of a space X, and π : X → X/G be a quotient map. Let K be a simplicial n

ScholarsArchive@OSU

Experimental Investigation of the Transition to Natural Convection in HTGR Applications using the Oregon State SFSETF

A moving boundary model of calcium alginate gel formation and the estimation of diffusion and mass transfer coefficients

Generalized modal analysis of electromagnetic- and quantum-waveguide structures and discontinuities

Sub-diffraction light propagation and imaging in planar negative refraction waveguides

Electromagnetic properties of anisotropic plasmonic metamaterials

A microscopic study of the interaction between aliovalent dopants and native defects in group IV oxides : indium and cadmium in ceria and zirconia

Computational nanooptics in hyperbolic metamaterials and plasmonic structures

Preliminary framework for the run-ahead predictive simulation software (RAPSS)

Design, construction, and characterization of a neutron depth profiling facility at the Oregon State University TRIGA® reactor with an advanced digital spectroscopy system

A thin codimension-one decomposition of the Hilbert Cube

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