subject:(LNT)

1. Oliveira, Raquel Araùjo de. Formal Specification and Verification of Interactive Systems with Plasticity : Applications to Nuclear-Plant Supervision : Spécification formelle et vérification de systèmes interactifs avec plasticité : applications à la supervision nucléaire.

Degree: Docteur es, Informatique, 2015, Université Grenoble Alpes (ComUE)

URL: http://www.theses.fr/2015GREAM025

► L'informatique ubiquitaire et la variété croissante des plates-formes et dispositifs changent les attentes des utilisateurs en termes d'interfaces utilisateur. Les systèmes devraient être en mesure… (more)

▼ L'informatique ubiquitaire et la variété croissante des plates-formes et dispositifs changent les attentes des utilisateurs en termes d'interfaces utilisateur. Les systèmes devraient être en mesure de s'adapter à leur contexte d'utilisation, à savoir, la plate-forme (par exemple un PC ou une tablette), les utilisateurs qui interagissent avec le système (par exemple, les administrateurs ou les utilisateurs réguliers), et l'environnement dans lequel le système s'exécute (par exemple une pièce sombre ou en extérieur). La capacité d'une interface utilisateur à s'adapter aux variations de son contexte d'utilisation tout en préservant son utilisabilité est appelée plasticité.La plasticité fournit aux utilisateurs différentes versions d'une interface utilisateur. Bien qu'elle enrichisse les interfaces utilisateur, la plasticité complexifie leur développement: la cohérence entre plusieurs versions d'une interface donnée (une pour chaque contexte d'utilisation) devrait être assurée. Étant donné le grand nombre de versions possibles d'une interface utilisateur, il est coûteux de vérifier ces exigences à la main. Des automatisations doivent être alors fournies afin de vérifier la plasticité.Cette complexité est accentuée quand il s'agit de systèmes critiques. Les systèmes critiques sont des systèmes dans lesquels une défaillance a des conséquences graves (par exemple, décès ou blessures de personnes, dommages à l'environnement, perte ou endommagement de l'équipement, etc.). La complexité de ces systèmes se reflète dans les interfaces utilisateur, qui doivent maintenant non seulement fournir des moyens corrects, intuitifs, non ambiguës et adaptables pour les utilisateurs pour atteindre un but, mais qui doivent aussi faire face aux exigences de sécurité visant à assurer que les systèmes sont raisonnablement sûrs avant d'être mis sur le marché.Plusieurs techniques existent afin d'assurer la qualité des systèmes en général, qui peuvent être également appliquées pour les systèmes critiques. La vérification formelle fournit un moyen d'effectuer une vérification rigoureuse, qui est adaptée pour les systèmes critiques. Notre contribution est une approche de vérification des systèmes interactifs critiques et plastiques à l'aide de méthodes formelles. Avec l'utilisation d'un outil performant, notre approche permet :- La vérification d'ensembles de propriétés sur un modèle du système. Reposant sur la technique de "model checking", notre approche permet la vérification de propriétés sur la spécification formelle du système. Les propriétés d'utilisabilité permettent de vérifier si le système suit de bonnes propriétés ergonomiques. Les propriétés de validité permettent de vérifier si le système suit les exigences qui spécifient son comportement attendu.- La comparaison des différentes versions du système. Reposant sur la technique "d'équivalence checking", notre approche vérifie dans quelle mesure deux interfaces utilisateur offrent les mêmes capacités d'interaction et la même apparence. Nous pouvons ainsi montrer si deux modèles d'une… Advisors/Committee Members: Dupuy-Chessa, Sophie (thesis director), Calvary, Gaëlle (thesis director).

Subjects/Keywords: Ihm; Adaptation; Vérification; Lnt; Hci; Adaptation; Verification; Lnt; 004

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APA (6^th Edition):

Oliveira, R. A. d. (2015). Formal Specification and Verification of Interactive Systems with Plasticity : Applications to Nuclear-Plant Supervision : Spécification formelle et vérification de systèmes interactifs avec plasticité : applications à la supervision nucléaire. (Doctoral Dissertation). Université Grenoble Alpes (ComUE). Retrieved from http://www.theses.fr/2015GREAM025

Chicago Manual of Style (16^th Edition):

Oliveira, Raquel Araùjo de. “Formal Specification and Verification of Interactive Systems with Plasticity : Applications to Nuclear-Plant Supervision : Spécification formelle et vérification de systèmes interactifs avec plasticité : applications à la supervision nucléaire.” 2015. Doctoral Dissertation, Université Grenoble Alpes (ComUE). Accessed March 06, 2021. http://www.theses.fr/2015GREAM025.

MLA Handbook (7^th Edition):

Oliveira, Raquel Araùjo de. “Formal Specification and Verification of Interactive Systems with Plasticity : Applications to Nuclear-Plant Supervision : Spécification formelle et vérification de systèmes interactifs avec plasticité : applications à la supervision nucléaire.” 2015. Web. 06 Mar 2021.

Vancouver:

Oliveira RAd. Formal Specification and Verification of Interactive Systems with Plasticity : Applications to Nuclear-Plant Supervision : Spécification formelle et vérification de systèmes interactifs avec plasticité : applications à la supervision nucléaire. [Internet] [Doctoral dissertation]. Université Grenoble Alpes (ComUE); 2015. [cited 2021 Mar 06]. Available from: http://www.theses.fr/2015GREAM025.

Council of Science Editors:

Oliveira RAd. Formal Specification and Verification of Interactive Systems with Plasticity : Applications to Nuclear-Plant Supervision : Spécification formelle et vérification de systèmes interactifs avec plasticité : applications à la supervision nucléaire. [Doctoral Dissertation]. Université Grenoble Alpes (ComUE); 2015. Available from: http://www.theses.fr/2015GREAM025

McMaster University

2. Tran, Jonathan. Impacts of Ionizing Radiation on Life History and Immunity in the Cricket, Acheta domesticus L.

Degree: MSc, 2017, McMaster University

URL: http://hdl.handle.net/11375/22131

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Oxidative stress from high-dose ionizing radiation can contribute to accumulating cellular damage, affecting various fitness related traits. However, studies on low-dose ionizing radiation (LDIR) have… (more)

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Oxidative stress from high-dose ionizing radiation can contribute to accumulating cellular damage, affecting various fitness related traits. However, studies on low-dose ionizing radiation (LDIR) have shown hormetic effects on growth, longevity, and immunity. Comprehensive lifetime studies assessing LDIR effects and studies investigating LDIR immune stimulation in insects are limited. We utilized 137Cs gamma radiation with a dose rate of 0.25 Gy/min. We examined the impacts of early-life exposure (doses: 0, 0.2, 0.5, 1, 2, 4, 7, and 10 Gy) on life history and immunity in Acheta domesticus. Moderate doses (above 4 Gy) increased mean longevity but decreased growth rate, adult body mass and innate immunity. We also performed a time course study in male A. domesticus to assess the acute effects of radiation (doses: 0, 0.2, 0.5, 0.75, 1, 5, and 15 Gy) on innate immunity and redox status. LDIR (below 1 Gy) generally achieved immune stimulation and improved the encapsulation response but effects were time dependent. Benefits could extend to improved immune responses and protection against infection. Our results provide evidence of immune stimulation with LDIR in insects but with potential trade- offs with life history traits when assessing early-life exposure. With increasing concern of radiation exposure in the environment, more comprehensive studies utilizing a multi- discipline approach will help to elucidate the full mechanism of hormesis.

Thesis

Master of Science (MSc)

High-dose ionizing radiation can have inhibitory effects on cellular systems while low doses can have lasting stimulatory effects. The latter phenomenon, known as hormesis, can act on growth, longevity, and immunity. We investigated the effects of early life gamma radiation exposure on life history traits and measures of innate immunity in the cricket (Acheta domesticus). We observed trade-offs between survival, growth, and immunity. We also tested late life radiation exposure to assess potential hormetic effects on innate immunity and redox status. Our results show immune stimulation with low doses but effects are complex and dependent on dose, type of immunity measured, and time of assessment.

Advisors/Committee Members: Rollo, C. David, Biology.

Subjects/Keywords: Radiation; Immunity; Life History; Insect; Hormesis; LNT; Dose-Response

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APA (6^th Edition):

Tran, J. (2017). Impacts of Ionizing Radiation on Life History and Immunity in the Cricket, Acheta domesticus L. (Masters Thesis). McMaster University. Retrieved from http://hdl.handle.net/11375/22131

Chicago Manual of Style (16^th Edition):

Tran, Jonathan. “Impacts of Ionizing Radiation on Life History and Immunity in the Cricket, Acheta domesticus L.” 2017. Masters Thesis, McMaster University. Accessed March 06, 2021. http://hdl.handle.net/11375/22131.

MLA Handbook (7^th Edition):

Tran, Jonathan. “Impacts of Ionizing Radiation on Life History and Immunity in the Cricket, Acheta domesticus L.” 2017. Web. 06 Mar 2021.

Vancouver:

Tran J. Impacts of Ionizing Radiation on Life History and Immunity in the Cricket, Acheta domesticus L. [Internet] [Masters thesis]. McMaster University; 2017. [cited 2021 Mar 06]. Available from: http://hdl.handle.net/11375/22131.

Council of Science Editors:

Tran J. Impacts of Ionizing Radiation on Life History and Immunity in the Cricket, Acheta domesticus L. [Masters Thesis]. McMaster University; 2017. Available from: http://hdl.handle.net/11375/22131

University of Windsor

3. Aversa, Christopher. Investigation on the Performance of a Long Breathing Lean NOx Trap Using n-Butanol.

Degree: MA, Mechanical, Automotive, and Materials Engineering, 2017, University of Windsor

URL: https://scholar.uwindsor.ca/etd/5965

► As regulations for nitrogen oxide (NOx) emissions continue to be tightened, the need for both alternative fuels and intensive exhaust after-treatment will increase. n-Butanol as… (more)

Subjects/Keywords: After-treatment; Alternative Fuel; Butanol; Diesel; LNT; NOx

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APA (6^th Edition):

Aversa, C. (2017). Investigation on the Performance of a Long Breathing Lean NOx Trap Using n-Butanol. (Masters Thesis). University of Windsor. Retrieved from https://scholar.uwindsor.ca/etd/5965

Chicago Manual of Style (16^th Edition):

Aversa, Christopher. “Investigation on the Performance of a Long Breathing Lean NOx Trap Using n-Butanol.” 2017. Masters Thesis, University of Windsor. Accessed March 06, 2021. https://scholar.uwindsor.ca/etd/5965.

MLA Handbook (7^th Edition):

Aversa, Christopher. “Investigation on the Performance of a Long Breathing Lean NOx Trap Using n-Butanol.” 2017. Web. 06 Mar 2021.

Vancouver:

Aversa C. Investigation on the Performance of a Long Breathing Lean NOx Trap Using n-Butanol. [Internet] [Masters thesis]. University of Windsor; 2017. [cited 2021 Mar 06]. Available from: https://scholar.uwindsor.ca/etd/5965.

Council of Science Editors:

Aversa C. Investigation on the Performance of a Long Breathing Lean NOx Trap Using n-Butanol. [Masters Thesis]. University of Windsor; 2017. Available from: https://scholar.uwindsor.ca/etd/5965

University of Kansas

4. Wentworth, Travis. Investigations of degradation in LNT catalysts systems: from noble metal to novel perovskite materials.

Degree: D.Eng., Chemical & Petroleum Engineering, 2015, University of Kansas

URL: http://hdl.handle.net/1808/19398

► The reduction in emissions from mobile and stationary sources has become a global priority. With the impacts of global warming already being felt, all avenues… (more)

▼ The reduction in emissions from mobile and stationary sources has become a global priority. With the impacts of global warming already being felt, all avenues for reduction in greenhouse gas emissions are being investigated. Proposed miles per gallon standards of 54.5 MPG by 2025 have made increased engine efficiency a priority for all auto manufacturers. Lean-burn diesel engines are one potential strategy to reach the MPG targets, however current automotive catalysts struggle to reduce NO¬x emission in the oxidative environments of lean-burn diesel engines. Lean NOx trap (LNT) catalysis is an ideal approach to reducing NO¬x in oxidative environments. LNT catalysts are similar to traditional three-way catalysts in that they are inserted directly into engine exhausts and require no additional reductant systems. These catalysts can be improved by investigation into the specific catalytic components. Platinum serves to oxidize NO, facilitates NOx storage, and reduce NOx. Barium stores NOx during lean phase operation, and common additives such as cerium improve tolerance to chemical thermal and physical degradation. As catalysts formulations are changed it is extremely important to understand how these catalysts will perform over the lifetime of operation. The following work has taken a systematic approach to investigating aging characteristics of LNT catalysts, from simplistic noble metal alumina supported materials, to novel platinum free ceramic catalysts. A global kinetic model has been developed, and through the implementation of adaptive kinetic parameters, degradation of NO oxidation has been accurately modeled with changes in noble metal morphology. Investigations into aging of Pt/Ba/Al2O3 and Pt/Ba/Ce/Al2O3 have shown that NO oxidation profiles change substantially with thermal aging and that both the oxidation state and particle size of Pt affects conversion. Investigation of NOx storage over Pt/Ba/Ce/Al2O3 after thermal aging have shown that thermal aging induces formation of BaAl2O4 at aging temperatures as low as 600ºC and small amounts of BaAl2O4 can promote storage. Finally, a Pt-free LaSrCoO3¬ catalyst has been shown to both oxidize and store NOx but was unable to perform NOx reduction. The work lays the foundation for investigations of non-platinic perovskites catalysts which represent the next generation of LNT catalysts. Advisors/Committee Members: Stagg-Williams, Susan M (advisor), Depcik, Christopher (cmtemember), Leonard, Kevin (cmtemember), Nordheden, Karen (cmtemember), Camarda, Kyle (cmtemember).

Subjects/Keywords: Chemical engineering; Mechanical engineering; Degradation; LNT; NO Oxidation; Perovskite

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APA (6^th Edition):

Wentworth, T. (2015). Investigations of degradation in LNT catalysts systems: from noble metal to novel perovskite materials. (Doctoral Dissertation). University of Kansas. Retrieved from http://hdl.handle.net/1808/19398

Chicago Manual of Style (16^th Edition):

Wentworth, Travis. “Investigations of degradation in LNT catalysts systems: from noble metal to novel perovskite materials.” 2015. Doctoral Dissertation, University of Kansas. Accessed March 06, 2021. http://hdl.handle.net/1808/19398.

MLA Handbook (7^th Edition):

Wentworth, Travis. “Investigations of degradation in LNT catalysts systems: from noble metal to novel perovskite materials.” 2015. Web. 06 Mar 2021.

Vancouver:

Wentworth T. Investigations of degradation in LNT catalysts systems: from noble metal to novel perovskite materials. [Internet] [Doctoral dissertation]. University of Kansas; 2015. [cited 2021 Mar 06]. Available from: http://hdl.handle.net/1808/19398.

Council of Science Editors:

Wentworth T. Investigations of degradation in LNT catalysts systems: from noble metal to novel perovskite materials. [Doctoral Dissertation]. University of Kansas; 2015. Available from: http://hdl.handle.net/1808/19398

University of Houston

5. Shakya, Bijesh Man. Studies of Platinum Dispersion and Catalyst Architecture for Lean NOx Reduction.

Degree: PhD, Chemical Engineering, 2013, University of Houston

URL: http://hdl.handle.net/10657/1194

► The combination of NOx storage and reduction (NSR) and selective catalytic reduction (SCR) catalyst is a promising technology for the reduction of NOx emission from… (more)

▼ The combination of NOx storage and reduction (NSR) and selective catalytic reduction (SCR) catalyst is a promising technology for the reduction of NOx emission from the exhaust of lean-burn or diesel engine vehicles. In the combined NSR/SCR system, NH3 generated in LNT during the rich phase is utilized in the SCR for additional NOx conversion. Therefore, the performance of the combined NSR/SCR depends strongly on the NH3 generating function of the NSR catalyst. Earlier studies show that lower Pt dispersion NSR catalysts give higher selectivity to NH3 making them ideal candidates for this particular application. In the first part of the work, we performed experiments on lower Pt dispersion catalysts to gain insights on the mechanistic effects of Pt dispersion on NOx conversion and selectivity. We also developed an improved crystallite-scale model of NSR that explicitly accounts for the crystallite scale gradients of the stored NOx. The calibrated model is able to capture the effects of Pt dispersion, rich phase duration and overall cycle time on cycle-averaged conversion and selectivity trends. In the second part, we carried out a simulation study of dual-layer NSR+SCR monolithic catalyst using (1+1)-D model of catalytic monolith with individually-calibrated global kinetic models. Simulations show that multiple combinations of catalyst loading can attain a given NOx conversion and N2 selectivity, and that there exists a loading of SCR washcoat for a given NSR catalyst for which the NOx conversion is maximum. Simulations of the dual-brick monolith are also performed to analyze the effects of catalyst architecture. Under identical conditions, the simulations show that dual-layer catalyst outperforms the dual-brick largely because of the better utilization of generated NH3. Finally, we performed an optimization study to identify optimal loading and configuration of combined Fe+Cu zeolite catalyst that gives overall high NOx removal efficiency over a broad range of temperature. Simulations suggest that the brick configuration in which Fe- brick is followed by Cu- catalyst is slightly better than dual-layer in which Fe- is coated on top of Cu- architecture. This is attributed to the diffusional limitations in the washcoat that is more pronounced in the dual-layer catalysts. Advisors/Committee Members: Balakotaiah, Vemuri (advisor), Harold, Michael P. (advisor), Luss, Dan (committee member), Franchek, Matthew A. (committee member), Jacobson, Allan J. (committee member).

Subjects/Keywords: NOx storage; NOx reduction; Selective catalytic reduction (SCR); Pt dispersion; Multi-layered catalyst; LNT+SCR

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APA (6^th Edition):

Shakya, B. M. (2013). Studies of Platinum Dispersion and Catalyst Architecture for Lean NOx Reduction. (Doctoral Dissertation). University of Houston. Retrieved from http://hdl.handle.net/10657/1194

Chicago Manual of Style (16^th Edition):

Shakya, Bijesh Man. “Studies of Platinum Dispersion and Catalyst Architecture for Lean NOx Reduction.” 2013. Doctoral Dissertation, University of Houston. Accessed March 06, 2021. http://hdl.handle.net/10657/1194.

MLA Handbook (7^th Edition):

Shakya, Bijesh Man. “Studies of Platinum Dispersion and Catalyst Architecture for Lean NOx Reduction.” 2013. Web. 06 Mar 2021.

Vancouver:

Shakya BM. Studies of Platinum Dispersion and Catalyst Architecture for Lean NOx Reduction. [Internet] [Doctoral dissertation]. University of Houston; 2013. [cited 2021 Mar 06]. Available from: http://hdl.handle.net/10657/1194.

Council of Science Editors:

Shakya BM. Studies of Platinum Dispersion and Catalyst Architecture for Lean NOx Reduction. [Doctoral Dissertation]. University of Houston; 2013. Available from: http://hdl.handle.net/10657/1194

6. Clark, Brian Gregory. Behaviors, Knowledge, And Education Of Leave No Trace Principles In The Red River Gorge Rock Climbing Community.

Degree: Doctor of Education (EdD), Educational Leadership and Policy Studies, 2017, Encompass Digital Archive, Eastern Kentucky University

URL: https://encompass.eku.edu/etd/516

► Rock Climbing is becoming a very popular and mainstream outdoor activity. With the growth in rock climbing comes an increase in the numbers of… (more)

Subjects/Keywords: climbing; enviromental impact; leave no trace; LNT; outdoor; rock climbing; Environmental Education; Recreation, Parks and Tourism Administration

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APA (6^th Edition):

Clark, B. G. (2017). Behaviors, Knowledge, And Education Of Leave No Trace Principles In The Red River Gorge Rock Climbing Community. (Doctoral Dissertation). Encompass Digital Archive, Eastern Kentucky University. Retrieved from https://encompass.eku.edu/etd/516

Chicago Manual of Style (16^th Edition):

Clark, Brian Gregory. “Behaviors, Knowledge, And Education Of Leave No Trace Principles In The Red River Gorge Rock Climbing Community.” 2017. Doctoral Dissertation, Encompass Digital Archive, Eastern Kentucky University. Accessed March 06, 2021. https://encompass.eku.edu/etd/516.

MLA Handbook (7^th Edition):

Clark, Brian Gregory. “Behaviors, Knowledge, And Education Of Leave No Trace Principles In The Red River Gorge Rock Climbing Community.” 2017. Web. 06 Mar 2021.

Vancouver:

Clark BG. Behaviors, Knowledge, And Education Of Leave No Trace Principles In The Red River Gorge Rock Climbing Community. [Internet] [Doctoral dissertation]. Encompass Digital Archive, Eastern Kentucky University; 2017. [cited 2021 Mar 06]. Available from: https://encompass.eku.edu/etd/516.

Council of Science Editors:

Clark BG. Behaviors, Knowledge, And Education Of Leave No Trace Principles In The Red River Gorge Rock Climbing Community. [Doctoral Dissertation]. Encompass Digital Archive, Eastern Kentucky University; 2017. Available from: https://encompass.eku.edu/etd/516

7. Munguia, Nicole. Lean NOx trap regeneration control strategy on a 1.9L turbocharged diesel.

Degree: MSin Engineering - MSE, Mechanical Engineering, 2009, University of Texas – Austin

URL: http://hdl.handle.net/2152/40937

► Various diesel NOx control technologies are being explored today as solutions for minimizing NOx emissions. The Lean NOx Trap is one of two products that… (more)

Subjects/Keywords: Lean NOx trap; LNT; Diesel-hybrid; Regeneration; NOx; Diesel emissions

…Temperature Monitoring....................................................... 18 Chapter 3 LNT… …Regeneration Mode Frequency and Duration .......................... 34 Chapter 4 LNT Regeneration… …23 Figure 7: Foreground of LNT Regeneration Control Strategy ....................... 29… …Drop Across DPF that Results from Soot Accumulation . 52 Figure 24 Dual-Loop LNT Control… …x29;, catalyst used for capturing PM, and the lean NOx trap (LNT) are catalysts…

11 more images…

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APA (6^th Edition):

Munguia, N. (2009). Lean NOx trap regeneration control strategy on a 1.9L turbocharged diesel. (Masters Thesis). University of Texas – Austin. Retrieved from http://hdl.handle.net/2152/40937

Chicago Manual of Style (16^th Edition):

Munguia, Nicole. “Lean NOx trap regeneration control strategy on a 1.9L turbocharged diesel.” 2009. Masters Thesis, University of Texas – Austin. Accessed March 06, 2021. http://hdl.handle.net/2152/40937.

MLA Handbook (7^th Edition):

Munguia, Nicole. “Lean NOx trap regeneration control strategy on a 1.9L turbocharged diesel.” 2009. Web. 06 Mar 2021.

Vancouver:

Munguia N. Lean NOx trap regeneration control strategy on a 1.9L turbocharged diesel. [Internet] [Masters thesis]. University of Texas – Austin; 2009. [cited 2021 Mar 06]. Available from: http://hdl.handle.net/2152/40937.

Council of Science Editors:

Munguia N. Lean NOx trap regeneration control strategy on a 1.9L turbocharged diesel. [Masters Thesis]. University of Texas – Austin; 2009. Available from: http://hdl.handle.net/2152/40937

8. Brookshear, Daniel William. The Impact of Biodiesel-based Na on the Durability of Cu-Zeolite SCR Catalysts and Other Diesel Aftertreatment Devices.

Degree: 2013, University of Tennessee – Knoxville

URL: https://trace.tennessee.edu/utk_graddiss/1698

► Biodiesel fuel has increased in popularity in recent years as an alternative fuel choice, but there are concerns related to the impact it will have… (more)

▼ Biodiesel fuel has increased in popularity in recent years as an alternative fuel choice, but there are concerns related to the impact it will have on diesel engines and aftertreatment systems relative to conventional diesel fuel. One major concern is the presence of sodium (Na) in finished biodiesel fuel due to the use of Na-hydroxyl as a liquid-phase catalyst during biodiesel synthesis. The current study focuses on determining the impact of biodiesel-based Na on the performance and materials characterization of diesel aftertreatment devices including lean NOx traps (LNT), diesel oxidation catalysts (DOC), diesel particulate filters (DPF), and Cu-zeolite selective catalytic reduction (SCR) catalysts. Long-term engine aged LNT, DOC, and DPF samples are provided by research partners, while a 517 cc single-cylinder Hatz diesel engine is used to perform accelerated Na-aging of aftertreatment systems consisting of a DOC, SCR, and DPF in either the light-duty (DOC-SCR-DPF) or heavy-duty (DOC-DPF-SCR) configuration. Bench-flow reactor (BFR) evaluations reveal that the performance of LNT and DOC catalysts is negligibly affected by exposure to Na, but that Cu-zeolite SCR in the light-duty configuration suffers a drastic reduction in nitrogen oxide (NOx) performance. The performance loss can be avoided by placing the SCR downstream of the DPF in the heavy-duty aftertreatment configuration, but electron microprobe analysis (EPMA) of the DPF from this configuration identifies excessive Na ash buildup and migration of Na into the DPF substrate. v EPMA analysis of the Na-aged SCR determined that the contamination pattern is similar to that observed in the long-term engine-aged DOC and LNT samples, providing credibility to the accelerated Na-aging process. Materials characterization techniques including diffuse-reflective infrared Fourier transform spectroscopy (DRIFTS), scanning electron microscopy (SEM) with energy dispersive spectroscopy (EDS), and BET surface area measurements determined that loss of catalyst surface area and a decrease in the number of active Cu sites for ammonia (NH3) adsorption and SCR reactions are the most likely cause of the reduced nitrogen oxides (NOx) performance in the light-duty configuration accelerated Na-aged SCR. Finally, mathematical modeling successfully predicts the performance of fresh SCR catalysts, but is less accurate for catalysts exposed to elevated levels of Na.

Subjects/Keywords: Biodiesel; NH3 SCR; Cu-zeolite; DOC; LNT; DPF; Catalysis and Reaction Engineering

…Durability of LNT, DOC, and DPF Aftertreatment Devices .................................. 34… …55 3.4.4 LNT Performance Evaluations… …78 4.1 Fresh and Engine-aged LNT… …78 4.1.1 Engine-aging of LNT… …59 Figure 3.5.2 TEM used for fresh and engine-aged LNT analysis.. ...................... 63…

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APA (6^th Edition):

Brookshear, D. W. (2013). The Impact of Biodiesel-based Na on the Durability of Cu-Zeolite SCR Catalysts and Other Diesel Aftertreatment Devices. (Doctoral Dissertation). University of Tennessee – Knoxville. Retrieved from https://trace.tennessee.edu/utk_graddiss/1698

Chicago Manual of Style (16^th Edition):

Brookshear, Daniel William. “The Impact of Biodiesel-based Na on the Durability of Cu-Zeolite SCR Catalysts and Other Diesel Aftertreatment Devices.” 2013. Doctoral Dissertation, University of Tennessee – Knoxville. Accessed March 06, 2021. https://trace.tennessee.edu/utk_graddiss/1698.

MLA Handbook (7^th Edition):

Brookshear, Daniel William. “The Impact of Biodiesel-based Na on the Durability of Cu-Zeolite SCR Catalysts and Other Diesel Aftertreatment Devices.” 2013. Web. 06 Mar 2021.

Vancouver:

Brookshear DW. The Impact of Biodiesel-based Na on the Durability of Cu-Zeolite SCR Catalysts and Other Diesel Aftertreatment Devices. [Internet] [Doctoral dissertation]. University of Tennessee – Knoxville; 2013. [cited 2021 Mar 06]. Available from: https://trace.tennessee.edu/utk_graddiss/1698.

Council of Science Editors:

Brookshear DW. The Impact of Biodiesel-based Na on the Durability of Cu-Zeolite SCR Catalysts and Other Diesel Aftertreatment Devices. [Doctoral Dissertation]. University of Tennessee – Knoxville; 2013. Available from: https://trace.tennessee.edu/utk_graddiss/1698

9. Parsons, Luke W. Recreation specialization and the effects on leave no trace attitudes among the climbers of Mount St. Helens.

Degree: MS, Physical Education, Health and Recreation, 2013, Eastern Washington University

URL: https://dc.ewu.edu/theses/232

Subjects/Keywords: Mountaineers – Washington (State) – Saint Helens; Mount – Attitudes; Outdoor recreation – Environmental aspects – Washington (State) – Saint Helens; Mount; Environmental protection – Washington (State) – Citizen participation; Saint Helens; Mount (Wash.); LNT skills & ethics series

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APA (6^th Edition):

Parsons, L. W. (2013). Recreation specialization and the effects on leave no trace attitudes among the climbers of Mount St. Helens. (Thesis). Eastern Washington University. Retrieved from https://dc.ewu.edu/theses/232

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Parsons, Luke W. “Recreation specialization and the effects on leave no trace attitudes among the climbers of Mount St. Helens.” 2013. Thesis, Eastern Washington University. Accessed March 06, 2021. https://dc.ewu.edu/theses/232.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Parsons, Luke W. “Recreation specialization and the effects on leave no trace attitudes among the climbers of Mount St. Helens.” 2013. Web. 06 Mar 2021.

Vancouver:

Parsons LW. Recreation specialization and the effects on leave no trace attitudes among the climbers of Mount St. Helens. [Internet] [Thesis]. Eastern Washington University; 2013. [cited 2021 Mar 06]. Available from: https://dc.ewu.edu/theses/232.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Parsons LW. Recreation specialization and the effects on leave no trace attitudes among the climbers of Mount St. Helens. [Thesis]. Eastern Washington University; 2013. Available from: https://dc.ewu.edu/theses/232

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Cincinnati

10. Eby, Christine A. Pediatric Cochlear Implant Outcomes in Auditory Neuropathy/Auditory Dys-Synchrony.

Degree: MA, Allied Health Sciences : Communication Science and Disorders, 2004, University of Cincinnati

URL: http://rave.ohiolink.edu/etdc/view?acc_num=ucin1085691784

► Objective: To describe the clinical outcomes in children diagnosed with Auditory Neuropathy/Auditory Dys-synchrony (AN/AD) who have received cochlear implants. Study Design: A prospective study of… (more)

▼ Objective: To describe the clinical outcomes in children diagnosed with Auditory Neuropathy/Auditory Dys-synchrony (AN/AD) who have received cochlear implants. Study Design: A prospective study of children diagnosed with AN/AD who have received a cochlear implant. Setting: Tertiary care pediatric referral center. Patients: Seven children with AN/AD identified from a pediatric otology/audiology clinic, whose treatment choice included cochlear implantation. A control group included seven children who received cochlear implant, but whose etiology of hearing loss varied. Outcome Measures: Seven of the children were seen for follow-up testing. Testing included, when age-appropriate: soundfield NBN and speech awareness testing, LNT and/or MLNT, HINT sentences, IT-MAIS and/or MAIS, and otoacoustic emissions. In addition, parents completed a Perceived Benefits Questionnaire, which was developed at our facility. Results: All children showed improvement with the use of a cochlear implant. Performance varied and was likely affected by additional handicapping conditions, age at implantation, duration of implant use, educational setting and/or communication mode as well as compliance with device usage and rehabilitation. Results of the Perceived Benefits Questionnaire were comparable to results from children without AN/AD who have cochlear implants. Conclusion: Children with AN/AD receive measurable benefit from the use of a cochlear implant. Their progress is similar to that of other children with cochlear implants without AN/AD. The degree of clinical outcome variability seen in the general pediatric cochlear implant population is also evident in the subgroup of children with AN/AD. Parents may perceive benefits for their child using a cochlear implant even though objective testing may not reflect these benefits. Additional medical and/or educational disabilities may impact the results obtained on standard tests in children with AN/AD. Development of the Perceived Benefits Questionnaire may be helpful in measuring cochlear implant benefit in children who are not able to participate in standard testing. Advisors/Committee Members: Keith, Dr. Robert (Advisor).

Subjects/Keywords: Health Sciences, Audiology; Auditory Neuropathy/Dys-Synchrony; cochlear implant; otoacoustic emissions; NBN = narrow band noise; LNT = Lexical Neighborhood Test; MLNT = Multisyllabic Lexical Neighborhood Test; IT-MAIS = Infant Toddler Meaningful Auditory Index Scale

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APA (6^th Edition):

Eby, C. A. (2004). Pediatric Cochlear Implant Outcomes in Auditory Neuropathy/Auditory Dys-Synchrony. (Masters Thesis). University of Cincinnati. Retrieved from http://rave.ohiolink.edu/etdc/view?acc_num=ucin1085691784

Chicago Manual of Style (16^th Edition):

Eby, Christine A. “Pediatric Cochlear Implant Outcomes in Auditory Neuropathy/Auditory Dys-Synchrony.” 2004. Masters Thesis, University of Cincinnati. Accessed March 06, 2021. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1085691784.

MLA Handbook (7^th Edition):

Eby, Christine A. “Pediatric Cochlear Implant Outcomes in Auditory Neuropathy/Auditory Dys-Synchrony.” 2004. Web. 06 Mar 2021.

Vancouver:

Eby CA. Pediatric Cochlear Implant Outcomes in Auditory Neuropathy/Auditory Dys-Synchrony. [Internet] [Masters thesis]. University of Cincinnati; 2004. [cited 2021 Mar 06]. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=ucin1085691784.

Council of Science Editors:

Eby CA. Pediatric Cochlear Implant Outcomes in Auditory Neuropathy/Auditory Dys-Synchrony. [Masters Thesis]. University of Cincinnati; 2004. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=ucin1085691784

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