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18 results on '"Phillips, Ryan C."'

1. A western trauma association multicenter comparison of mesh versus non-mesh repair of blunt traumatic abdominal wall hernias

Author

Harrell, Kevin N., Grimes, Arthur D., Gill, Harkanwar, Reynolds, Jessica K., Ueland, Walker R., Sciarretta, Jason D., Todd, Samual R., Trust, Marc D., Ngoue, Marielle, Thomas, Bradley W., Ayuso, Sullivan A., LaRiccia, Aimee, Spalding, M. Chance, Collins, Michael J., Collier, Bryan R., Karam, Basil S., de Moya, Marc A., Lieser, Mark J., Chipko, John M., Jr, Haan, James M., Lightwine, Kelly L., Cullinane, Daniel C., Falank, Carolyne R., Phillips, Ryan C., Kemp, Michael T., Alam, Hasan B., Udekwu, Pascal O., Sanin, Gloria D., Hildreth, Amy N., Biffl, Walter L., Schaffer, Kathryn B., Marshall, Gary, Muttalib, Omaer, Nahmias, Jeffry, Shahi, Niti, Moulton, Steven L., and Maxwell, Robert A.

Published
2024
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2. Risk factors for recurrence in blunt traumatic abdominal wall hernias: A secondary analysis of a Western Trauma association multicenter study

Author

Harrell, Kevin N., Grimes, Arthur D., Gill, Harkanwar, Reynolds, Jessica K., Ueland, Walker R., Sciarretta, Jason D., Todd, Samual R., Trust, Marc D., Ngoue, Marielle, Thomas, Bradley W., Ayuso, Sullivan A., LaRiccia, Aimee, Spalding, M Chance, Collins, Michael J., Collier, Bryan R., Karam, Basil S., de Moya, Marc A., Lieser, Mark J., Chipko, John M., Haan, James M., Lightwine, Kelly L., Cullinane, Daniel C., Falank, Carolyne R., Phillips, Ryan C., Kemp, Michael T., Alam, Hasan B., Udekwu, Pascal O., Sanin, Gloria D., Hildreth, Amy N., Biffl, Walter L., Schaffer, Kathryn B., Marshall, Gary, Muttalib, Omaer, Nahmias, Jeffry, Shahi, Niti, Moulton, Steven L., and Maxwell, Robert A.

Published
2023
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3. Adolescent Vaping-Associated Trauma in the Western United States

Author

Russell, Katie W., Katz, Micah G., Phillips, Ryan C., Kelley-Quon, Lorraine I., Acker, Shannon N., Shahi, Niti, Lee, Justin H., Fialkowski, Elizabeth A., Nacharaju, Deepthi, Smith, Caitlin A., Jensen, Aaron R., Mueller, Claudia M., Padilla, Benjamin E., Ignacio, Romeo C., Ourshalimian, Shadassa, Wang, Kasper S., Ostlie, Daniel J., Fenton, Stephen J., and Kastenberg, Zachary J.

Published
2022
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6. Distinct neural correlates for attention lapses in patients with schizophrenia and healthy participants

Author

Phillips, Ryan C, Salo, Taylor, and Carter, Cameron S

Subjects
Brain Disorders, Behavioral and Social Science, Neurosciences, Schizophrenia, Mental Health, Clinical Research, Mental health, attention lapses, schizophrenia, default mode network, mind wandering, fMRI, Psychology, Cognitive Sciences, Experimental Psychology
Abstract

Momentary lapses in attention are common in healthy populations. This phenomenon has recently received increased investigation, particularly in relationship to the default mode network (DMN). Previous research has suggested that these lapses may be due to intrusive task-irrelevant thoughts. The study of this phenomenon in schizophrenia, which is characterized by a wide variety of cognitive deficits including deficits in attention, has not previously been explored. We used the AX Continuous Performance Task to investigate attention lapses in healthy participants as well as patients with schizophrenia. We found distinct patterns of network activation between these two groups. Lapses in healthy participants were associated with DMN activation, while in patients, the same behavioral phenomenon was associated with deactivations in frontal-parietal control network (FPCN) regions. When considered in contrast to the results observed in healthy participants, these results suggest an additional origin of attention lapses in patients derived from a loss of task-related context, rather than intrusive task-irrelevant thoughts.

Published
2015

7. Bone Anchor Fixation in the Repair of Blunt Traumatic Abdominal Wall Hernias: A Western Trauma Association Multicenter Study

Author

Harrell, Kevin N, primary, Grimes, Arthur D, additional, Gill, Harkanwar, additional, Reynolds, Jessica K, additional, Ueland, Walker R, additional, Sciarretta, Jason D, additional, Todd, Samual R, additional, Trust, Marc D, additional, Ngoue, Marielle, additional, Thomas, Bradley W, additional, Ayuso, Sullivan A, additional, LaRiccia, Aimee, additional, Spalding, Chance M, additional, Collins, Michael J, additional, Collier, Bryan R, additional, Karam, Basil S, additional, de Moya, Marc A, additional, Lieser, Mark J, additional, Chipko, John M, additional, Haan, James M, additional, Lightwine, Kelly L, additional, Cullinane, Daniel C, additional, Falank, Carolyne R, additional, Phillips, Ryan C, additional, Kemp, Michael T, additional, Alam, Hasan B, additional, Udekwu, Pascal O, additional, Sanin, Gloria D, additional, Hildreth, Amy N, additional, Biffl, Walter L, additional, Schaffer, Kathryn B, additional, Marshall, Gary, additional, Muttalib, Omaer, additional, Nahmias, Jeffry, additional, Shahi, Niti, additional, Moulton, Steven L, additional, and Maxwell, Robert A, additional

Published
2024
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8. Management of blunt traumatic abdominal wall hernias: A Western Trauma Association multicenter study

Author

Harrell, Kevin N., Grimes, Arthur D., Albrecht, Roxie M., Reynolds, Jessica K., Ueland, Walker R., Sciarretta, Jason D., Todd, Samual R., Trust, Marc D., Ngoue, Marielle, Thomas, Bradley W., Ayuso, Sullivan A., LaRiccia, Aimee, Spalding, M. Chance, Collins, Michael J., Collier, Bryan R., Karam, Basil S., de Moya, Marc A., Lieser, Mark J., Chipko, John M., Jr, Haan, James M., Lightwine, Kelly L., Cullinane, Daniel C., Falank, Carolyne R., Phillips, Ryan C., Kemp, Michael T., Alam, Hasan B., Udekwu, Pascal O., Sanin, Gloria D., Hildreth, Amy N., Biffl, Walter L., Schaffer, Kathryn B., Marshall, Gary, Muttalib, Omaer, Nahmias, Jeffry, Shahi, Niti, Moulton, Steven L., and Maxwell, Robert A.

Published
2021
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9. A Western Trauma Association Multicenter Comparison of Mesh Versus Non-Mesh Repair of Blunt Traumatic Abdominal Wall Hernia

Author

Harrell, Kevin N, primary, Grimes, Arthur D, additional, Gill, Harkanwar, additional, Reynolds, Jessica K, additional, Ueland, Walker R, additional, Sciarretta, Jason D, additional, Todd, Samual R, additional, Trust, Marc D, additional, Ngoue, Marielle, additional, Thomas, Bradley W, additional, Ayuso, Sullivan A, additional, LaRiccia, Aimee, additional, Spalding, M Chance, additional, Collins, Michael J, additional, Collier, Bryan R, additional, Karam, Basil S, additional, de Moya, Marc A, additional, Lieser, Mark J, additional, Chipko, John M, additional, Haan, James M, additional, Lightwine, Kelly L, additional, Cullinane, Daniel C, additional, Falank, Carolyne R, additional, Phillips, Ryan C, additional, Kemp, Michael T, additional, Alam, Hasan B, additional, Udekwu, Pascal O, additional, Sanin, Gloria D, additional, Hildreth, Amy N, additional, Biffl, Walter L, additional, Schaffer, Kathryn B, additional, Marshall, Gary, additional, Muttalib, Omaer, additional, Nahmias, Jeffry, additional, Shahi, Niti, additional, Moulton, Steven L, additional, and Maxwell, Robert A, additional

Published
2023
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11. Risk factors for recurrence in blunt traumatic abdominal wall hernias: A secondary analysis of a Western Trauma association multicenter study

Author

Harrell, Kevin N., primary, Grimes, Arthur D., additional, Gill, Harkanwar, additional, Reynolds, Jessica K., additional, Ueland, Walker R., additional, Sciarretta, Jason D., additional, Todd, Samual R., additional, Trust, Marc D., additional, Ngoue, Marielle, additional, Thomas, Bradley W., additional, Ayuso, Sullivan A., additional, LaRiccia, Aimee, additional, Spalding, M Chance, additional, Collins, Michael J., additional, Collier, Bryan R., additional, Karam, Basil S., additional, de Moya, Marc A., additional, Lieser, Mark J., additional, Chipko, John M., additional, Haan, James M., additional, Lightwine, Kelly L., additional, Cullinane, Daniel C., additional, Falank, Carolyne R., additional, Phillips, Ryan C., additional, Kemp, Michael T., additional, Alam, Hasan B., additional, Udekwu, Pascal O., additional, Sanin, Gloria D., additional, Hildreth, Amy N., additional, Biffl, Walter L., additional, Schaffer, Kathryn B., additional, Marshall, Gary, additional, Muttalib, Omaer, additional, Nahmias, Jeffry, additional, Shahi, Niti, additional, Moulton, Steven L., additional, and Maxwell, Robert A., additional

Published
2022
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13. Corrigendum to Adolescent Vaping-Associated Trauma in the Western United States [J Surg Res. 2022 Aug;276:251–255]

Author

Russell, Katie W., Katz, Micah G., Phillips, Ryan C., Kelley-Quon, Lorraine I., Acker, Shannon N., Shahi, Niti, Lee, Justin H., Fialkowski, Elizabeth A., Nacharaju, Deepthi, Smith, Caitlin A., Jensen, Aaron R., Mueller, Claudia M., Padilla, Benjamin E., Ignacio, Romeo C., Ourshalimian, Shadassa, Wang, Kasper S., Ostlie, Daniel J., Fenton, Stephen J., and Kastenberg, Zachary J.

Published
2024
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16. STRUCTURE, COMPOSITION AND PERFORMANCE OF SURFACE FILMS ON AZ ALLOYS AS A FUNCTION OF pH AND ALLOYED ALUMINUM CONCENTRATION

Author

Phillips, Ryan C., Kish, Joey, and Materials Science and Engineering

Subjects
magnesium alloys, corrosion, Structural Materials, surface films, passivity, STEM
Abstract

This thesis presents an investigation into the structure, composition and performance of naturally formed surface films on AZ alloys as a function of pH and alloyed Al concentration. STEM verified the film structure was bi-layer, consisting of an inner barrier layer, which was visibly deteriorated, and an outer porous layer. EDS SmartMaps™ coupled with the Inca™ software package determined the inner barrier layer was predominantly composed of MgO, whereas the outer layer was primarily Mg(OH)2. However, both layers appeared to posses mixed oxide/hydroxide components according to ToF-SIMS analysis. Environmental pH had the largest effect on the structure and composition of the surface film. The near-neutral sample showed significant breakdown within the inner layer, which was attributed to natural hydration of MgO to Mg(OH)2. This favourable hydration reaction is slower in alkaline environments and as such, the stability of the inner barrier layers of the pH 14 samples were noticeably improved. The effect of alloyed Al concentration was less significant however; increased enrichment of Al into the surface film structure appeared to cause a reduction in the thickness of the corrosion film itself. Drastic differences in corrosion performance were observed between the near-neutral and alkaline environments. Significantly better corrosion resistance to anodic dissolution was present in the alkaline environment coupled with a noticeably lower corrosion rate. The absence of breakdown potentials along with the presence of mass transport controlled anodic kinetics signified that the improved stability of the inner barrier layer was responsible for improved corrosion performance. In contrast, severe pitting and a narrow range of anodic stability were present for the near-neutral samples where the inner barrier layer was significantly compromised. This deterioration was deemed responsible for accelerated cathodic kinetics as well as minimal impedance to aggressive Cl- ions from initiating wide scale electrochemical breakdown of the surface film. Master of Applied Science (MASc)

Published
2011

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