Digital Commons Network^™

Quantifying The Energetic Cost Of Disorientation In Loggerhead (Caretta Caretta) And Green (Chelonia Mydas) Sea Turtle Hatchlings, Sean. Williams

Electronic Theses and Dissertations 2010 - 2019

The photopollution of beaches caused by artificial light sources can interfere with sea turtle hatchlings' ability to orient properly towards the sea. Exhaustion due to extended disorientation crawling may then increase hatchling mortality. This study evaluated the energetic consequences of long-distance crawls in green and loggerhead sea turtle hatchlings. Turtles crawled for 200 m or 500 m on a treadmill, followed by a 30 minute evaluation of swim performance. Metabolic activity was quantified via measures of blood glucose, blood lactate, and oxygen consumption. No significant changes in metabolism resulted from long-distance crawling activity in loggerheads ; however, loggerheads rested for …

Relationship Bertween Wellness And Burnout Among Novice Counselors, Jennifer. Bilot

Electronic Theses and Dissertations 2010 - 2019

The purpose of this research was to explore the relationship between wellness and burnout among novice counselors. This research was carried out in order to gain a better understanding of the experience of the novice counselor as well as to gain insight into the effects of wellness and burnout on these experiences. The significance of this research lies in the need to understand the novice counselor's journey, the factors that can contribute to or prevent burnout, and the potential prevention and intervention strategies that can be employed in response to burnout. The data of a final sample of 144 participants' …

Understanding The Emission From Semiconductor Nanoparticles, Beth Ann Manhat

Dissertations and Theses

This dissertation describes the synthesis and characterization of fluorescent semiconductor nanoparticles (NPs) in order to optimize their biomedical utility for imaging and sensing applications. While both direct and indirect bandgap semiconductor NPs have been studied, control over their emission properties vary. Quantum confinement (QC), which primarily controls the emission wavelength of nanosized semiconductors, dictates that as the size of semiconductor NPs decrease, the magnitude of the bandgap increases, resulting in changes in the observed emission wavelength: smaller NPs have a larger bandgap, and thus a bluer emission. However, surface, interfacial, or shell defects can act as non-radiative or radiative recombination …

Neurofibromatosis 2011: A Report Of The Children's Tumor Foundation Annual Meeting., Michel Kalamarides, Maria T. Acosta, Dusica Babovic-Vuksanovic, Olli Carpen, Karen Cichowski, Dg Evans, Filippo Giancotti, Co Hanemann, David Ingram, Alison C. Lloyd, Debra A. Mayes, Ludwine Messiaen, Helen Morrison, Kathryn North, Roger Packer, Duojia Pan, Anat Stemmer-Rachamimov, Meena Upadhyaya, David Viskochil, Margret R. Wallace, Kim Hunter-Schaedle, Nancy Ratner

Peninsula Medical School

The 2011 annual meeting of the Children's Tumor Foundation, the annual gathering of the neurofibromatosis (NF) research and clinical communities, was attended by 330 participants who discussed integration of new signaling pathways into NF research, the appreciation for NF mutations in sporadic cancers, and an expanding pre-clinical and clinical agenda. NF1, NF2, and schwannomatosis collectively affect approximately 100,000 persons in US, and result from mutations in different genes. Benign tumors of NF1 (neurofibroma and optic pathway glioma) and NF2 (schwannoma, ependymoma, and meningioma) and schwannomatosis (schwannoma) can cause significant morbidity, and there are no proven drug treatments for any form …

Using Problem-Based Learning To Foster Student Development, Shannon Chance

Research Outputs: 2025-Present

At the University of Michigan, professors Marshall, Shtein, and Daubmann (2011)have developed a “multidisciplinary hands-on think tank” (p. 1). Their SmartSurfaces course is offered to students majoring in engineering, art, and architecture as part of the university’s Multidisciplinary Learning Team Teaching Initiative (MLTT). The course provides insight into the efficacy of hands-on, Problem-Based Learning (PBL). A follow-up survey conducted by Bierwert, Olds, and Barber (2010) on behalf of the university’s Center for Research on Learningand Teaching (CRLT) revealed high levels of student learning through this course. Students reported developing strong skills related to critical thinking, oral communication, and creative thinking. …

Remediation Of Hydrocarbon Contamination In Downtown Mandan, North Dakota, Damien Hesse, Amanda Krieger, Alex Padgett, Derek Zander

Undergraduate Theses and Senior Projects

No abstract provided.

Does A Ketogenic Diet Infer Neuroprotection In A Rat Model Of Neurotrauma, Ryan Lange

Undergraduate Theses and Senior Projects

No abstract provided.

Is Ciliary Neurotrophic Factor A Central Nervous System Alarmin?, Anthony Johnson

Undergraduate Theses and Senior Projects

No abstract provided.

Effects Of Ysce And Yscl On Yops Secretion In The Type Iii Secretion System Of Yersinia Pestis, Michael Harsche

Undergraduate Theses and Senior Projects

No abstract provided.

Scas Officers And Council Members 2011 - 2012

Journal of the South Carolina Academy of Science

No abstract provided.

Effects Of A Crisis Intervention Team (Cit) Training Program Upon Police Officers Before And After Crisis Intervention Team Training: An Evidenced Based Program Evaluation Project In Miami Dade County Florida, Horace Ellis

Electronic Theses and Dissertations 2010 - 2019

Throughout communities across the United States, police officers frequently come in contact with individuals who are experiencing an active state of mental health crisis and do not have the necessary skills to safely and effectively intervene. The deinstitutionalization of patients in American psychiatric hospitals began in the 1970s (Burris, 2004). This policy was meant to be a way to help re-integrate those chronically ill patients back into the community (Burris, 2004). The theory of deinstitutionalization consists of component processes: the release of persons residing in psychiatric hospitals to families and alternative living facilities in the community, the diversion of potential …

Guided Self-Help Concreteness Training As An Intervention For Major Depression In Primary Care: A Phase Ii Randomized Controlled Trial., E. R. Watkins, R. S. Taylor, R. Byng, C. Baeyens, R. Read, K. Pearson, L. Watson

Peninsula Medical School

BACKGROUND: The development of widely accessible, effective psychological interventions for depression is a priority. This randomized trial provides the first controlled data on an innovative cognitive bias modification (CBM) training guided self-help intervention for depression. METHOD: One hundred and twenty-one consecutively recruited participants meeting criteria for current major depression were randomly allocated to treatment as usual (TAU) or to TAU plus concreteness training (CNT) guided self-help or to TAU plus relaxation training (RT) guided self-help. CNT involved repeated practice at mental exercises designed to switch patients from an unhelpful abstract thinking habit to a helpful concrete thinking habit, thereby targeting …

Bullying In Schools, Chantal M. Gagnon

Electronic Theses and Dissertations 2010 - 2019

Peer aggression and bullying are significant problems for children in American schools. While a large body of research has been conducted in this area, none to date has examined the combined roles of temperament (behavioral activation system, or BAS, and behavioral inhibition system, or BIS), and empathy in predicting participation in bullying interactions. Previous research has found that low empathy facilitates aggressive behavior, while high empathy inhibits it, and has linked poor emotion regulation to conduct disorders. Thus, if these factors can predict behaviors towards peers, they may also predict (independently and in combination) involvement in bullying, specifically the roles …

Simultaneous X-Ray And Neutron Diffraction Rietveld Refinements Of Nanophase Fe Substituted Hydroxyapatite, Andreas Kyriacou

Electronic Theses and Dissertations 2010 - 2019

The effect of Fe substitution on the crystal structure of hydroxyapatite (HAp) is studied by applying simultaneous Rietveld refinements of powder x-ray and neutron diffraction patterns. Fe is one of the trace elements replacing Ca in HAp, which is the major mineral phase in bones and teeth. The morphology and magnetic properties of the Fe-HAp system are also studied by transmission electron microscopy and magnetization measurements. Samples of Ca(5-x)Fex(PO4)3OH with 0< x < 0.3 were prepared. Single phase HAp was identified in x-ray diffraction patterns (XRD) of samples with x < 0.1 inferring that the solubility limits are less than 0.1. Hematite ((Sa(B-Fe2O3) is identified as a secondary phase for higher Fe content. The refined parameters show that Fe is incorporated in the HAp structure by replacing Ca in the two crystallographic sites with a preference at the Ca2 site. This preference explains the small effect of the Fe substitution on the lattice constants of HAp. The overall decrease of the lattice constants is explained by the ionic vi size difference of Ca and Fe. The increasing trend of the a-lattice constant with x in the Fe substituted samples is attributed to a lattice relaxation caused by the substitution of the 4- and 6-fold Fe at the 7- and 9-fold Ca1 and Ca2 sites. This Ca local geometry reduction is indicated by a slight increase of the Ca1-O3 and Ca2-O1 bond lengths. Above the solubility limit x = 0.05, the Fe is partitioned in and out of the HAp structure with increasing nominal Fe content x. The excess Fe is oxidized to hematite. The TEM analysis and magnetic measurements support the results of the simultaneous Rietveld refinements. The TEM images show no significant effect on the morphology and size of the HAp particles upon Fe incorporation. The particles are either spheres or short rods of dimensions 20-60 nm. Hematite particles are imaged in the samples with x exceeding the solubility limit. These particles

Stability Analysis For Nonlinear Systems With Time-Delays, Shanaz Tiwari

Electronic Theses and Dissertations 2010 - 2019

In this work, we investigate input-to-state stability (ISS) and other related stability properties for control systems with time-delays. To overcome the complexity caused by the presence of the delays, we adopt a Razumikhin approach. The underlying idea of this approach is to treat the delayed variables as system uncertainties. The advantage of this approach is that one works in the more familiar territory of stability analysis for delay-free systems in the context of ISS instead of carrying out stability analysis on systems of functional differential equations. Our first step is to provide criteria on ISS and input-to-input stability properties based …

The Socio-Temporary In Architecture: Territories Of Second-Order Cybernetics, S Murrani

School of Art, Design and Architecture

No abstract provided.

An Exploration Of The Experience And Social Construction Of Ageing: Perspectives From Older Adults In A Healthy Ageing Program And Those From Western Australian And Welsh Communities, Sasha A. Stumpers

Theses: Doctorates and Masters

In recent years, a strong focus has emerged towards developing and implementing guidelines, policies, governmental strategies and research agendas that best support a growing ageing population (United Nations, 1983, 1990, 1991, 1999, 2001, 2002, 2012; United Nations Programme on Ageing/International Association of Gerontology and Geriatrics, 2007; United Nations/Department of Economic and Social Affairs, 2008; World Health Organization, 2002, 2004a). Locally in Western Australia (WA), nationally and internationally, this attention has culminated in a focus on promoting the notion of “healthy ageing” (Commonwealth of Australia, 1999; Commonwealth States and Territories, 2000; Office for Seniors Interests and Volunteering, 2006; U.S. Department of …

Effects Of Walnut Consumption On Cognitive Performance In Young Adults, Peter Pribis, Rudolph N. Bailey, Andrew A. Russell, Marcia A. Kilsby, Magaly Hernandez, Winston J. Craig, Tevni Grajales, David J. Shavlik, Joan Sabatè

Faculty Publications

Walnuts contain a number of potentially neuroprotective compounds like vitamin E, folate, melatonin, several antioxidative polyphenols and significant amounts of n-3 α-linolenic fatty acid. The present study sought to determine the effect of walnuts on verbal and non-verbal reasoning, memory and mood. A total of sixty-four college students were randomly assigned to two treatment sequences in a crossover fashion: walnuts-placebo or placebo-walnuts. Baseline data were collected for non-verbal reasoning, verbal reasoning, memory and mood states. Data were collected again after 8 weeks of intervention. After 6 weeks of washout, the intervention groups followed the diets in reverse order. Data were …

Coping Behaviour As An Adaptation To Stress: Post-Disturbance Preening In Colonial Seabirds, Shandelle M. Henson, Lynelle M. Weldon, James L. Hayward, Daniel Greene, Libby C. Megna, Maureen C. Serem

Faculty Publications

In humans, coping behaviour is an action taken to soothe oneself during or after a stressful or threatening situation. Some human behaviours with physiological functions also serve as coping behaviours, for example, comfort sucking in infants and comfort eating in adults. In birds, the behaviour of preening, which has important physiological functions, has been postulated to soothe individuals after stressful situations. We combine two existing modelling approaches – logistic regression and Darwinian dynamics – to explore theoretically how a behaviour with crucial physiological function might evolve into a coping behaviour. We apply the method to preening in colonial seabirds to …

Prevalence And Determinants For Overweight And Obesity Among Residents Of A Mining Township In Kitwe, Zambia, In 2011: A Population-Based Survey, Cosmas Zyaambo, Olesegun Babaniyi, Peter Songolo, Adamson S. Muula, Emmanuel Rudatsikira, Victor M. Mukonka, Seter Siziya

Faculty Publications

Background: Obesity and overweight in Africa have been attributed to demogra- phic and nutritional changes that have resulted from urbanization and sedentary lifestyles and increased caloric intake without much physical activities. This has put populations at an increased risk of cardiovascular diseases, Diabetes mellitus, osteoarthritis, dyslipidemia, and cancer. The objective of this study was to deter- mine the prevalence and associated factors for combined overweight and obesity among residents of a mining town, Kitwe, in Zambia.

Methods: A cross sectional study was conducted using a modified WHO glo- bal Non Communicable Diseases Surveillance Initiative STEPs 1 and 2 method of …

The Effect Of Geographical Scale Of Sampling On Dna Barcoding., Johannes Bergsten, David T. Bilton, Tomochika Fujisawa, Miranda Elliott, Michael T. Monaghan, Michael Balke, Lars Hendrich, Joja Geijer, Jan Herrmann, Garth N. Foster, Ignacio Ribera, Anders N. Nilsson, Timothy G. Barraclough, Alfried P. Vogler

School of Biological and Marine Sciences

Eight years after DNA barcoding was formally proposed on a large scale, CO1 sequences are rapidly accumulating from around the world. While studies to date have mostly targeted local or regional species assemblages, the recent launch of the global iBOL project (International Barcode of Life), highlights the need to understand the effects of geographical scale on Barcoding's goals. Sampling has been central in the debate on DNA Barcoding, but the effect of the geographical scale of sampling has not yet been thoroughly and explicitly tested with empirical data. Here, we present a CO1 data set of aquatic predaceous diving beetles …

The Role Of Insulin-Like Growth Factors Signaling In Merlin-Deficient Human Schwannomas., Sylwia Ammoun, M. Caroline Schmid, Natalia Ristic, Lu Zhou, David Hilton, Emanuela Ercolano, Camille Carroll, C. Oliver Hanemann

Peninsula Medical School

Loss of the tumor suppressor merlin causes development of the tumors of the nervous system, such as schwannomas, meningiomas, and ependymomas occurring spontaneously or as part of a hereditary disease Neurofibromatosis Type 2 (NF2). Current therapies, (radio) surgery, are not always effective. Therefore, there is a need for drug treatments for these tumors. Schwannomas are the most frequent of merlin-deficient tumors and are hallmark for NF2. Using our in vitro human schwannoma model, we demonstrated that merlin-deficiency leads to increased proliferation, cell-matrix adhesion, and survival. Increased proliferation due to strong activation of extracellular-signal-regulated kinase 1/2 (ERK1/2) is caused by overexpression/activation …

Control Of Interneuron Dendritic Growth Through Nrg1/Erbb4-Mediated Kalirin-7 Disinhibition., M. E. Cahill, K. A. Jones, I. Rafalovich, Z. Xie, C. S. Barros, U. Müller, P. Penzes

Peninsula Medical School

Neuregulin 1 (NRG1) is a secreted trophic factor that activates the postsynaptic erbB4 receptor tyrosine kinase. Both NRG1 and erbB4 have been repeatedly associated with schizophrenia, but their downstream targets are not well characterized. ErbB4 is highly abundant in interneurons, and NRG1-mediated erbB4 activation has been shown to modulate interneuron function, but the role for NRG1-erbB4 signaling in regulating interneuron dendritic growth is not well understood. Here we show that NRG1/erbB4 promote the growth of dendrites in mature interneurons through kalirin, a major dendritic Rac1-GEF. Recent studies have shown associations of the KALRN gene with schizophrenia. Our data point to …

Osteochondral Tissue Engineering: Scaffolds, Stem Cells And Applications., Patcharakamon Nooeaid, Vehid Salih, Justus P. Beier, Aldo R. Boccaccini

Peninsula Dental School

Osteochondral tissue engineering has shown an increasing development to provide suitable strategies for the regeneration of damaged cartilage and underlying subchondral bone tissue. For reasons of the limitation in the capacity of articular cartilage to self-repair, it is essential to develop approaches based on suitable scaffolds made of appropriate engineered biomaterials. The combination of biodegradable polymers and bioactive ceramics in a variety of composite structures is promising in this area, whereby the fabrication methods, associated cells and signalling factors determine the success of the strategies. The objective of this review is to present and discuss approaches being proposed in osteochondral …

Emergent Auditory Feature Tuning In A Real-Time Neuromorphic Vlsi System., Sadique Sheik, Martin Coath, Giacomo Indiveri, Susan L. Denham, Thomas Wennekers, Elisabetta Chicca

School of Engineering, Computing and Mathematics

Many sounds of ecological importance, such as communication calls, are characterized by time-varying spectra. However, most neuromorphic auditory models to date have focused on distinguishing mainly static patterns, under the assumption that dynamic patterns can be learned as sequences of static ones. In contrast, the emergence of dynamic feature sensitivity through exposure to formative stimuli has been recently modeled in a network of spiking neurons based on the thalamo-cortical architecture. The proposed network models the effect of lateral and recurrent connections between cortical layers, distance-dependent axonal transmission delays, and learning in the form of Spike Timing Dependent Plasticity (STDP), which …

210Pb-226Ra Chronology Reveals Rapid Growth Rate Of Madrepora Oculata And Lophelia Pertusa On World's Largest Cold-Water Coral Reef, P. Sabatier, J. L. Reyss, J. M. Hall-Spencer, C. Colin, N. Frank, N Tisnerat-Laborde, L. Bordier, E. Douville

School of Biological and Marine Sciences

No abstract provided.

Marine Bivalve Shell Geochemistry And Ultrastructure From Modern Low Ph Environments: Environmental Effect Versus Experimental Bias, S. Hahn, R. Rodolfo-Metalpa, E. Griesshaber, W. W. Schmahl, D. Buhl, J. M. Hall-Spencer, C. Baggini, K. T. Fehr, A. Immenhauser

School of Biological and Marine Sciences

No abstract provided.

Temperate And Tropical Brown Macroalgae Thrive, Despite Decalcification, Along Natural Co2 Gradients, Vivienne R. Johnson, Bayden D. Russell, Katharina E. Fabricius, Colin Brownlee, Jason M. Hall-Spencer

School of Biological and Marine Sciences

No abstract provided.

Artificial Seed Production From Encapsulated Microshoots Of Cauliflower (Brassica Oleraceae Var Botrytis), Hz Rihan, Mp Fuller, M Al-Issawi, S Burchett

School of Biological and Marine Sciences

A cost effective protocol for the production of cauliflower microshoots suitable for encapsulation was designed. Microshoots were encapsulated in sodium chloride matrices. The use of 2% of sodium alginate and 15 g/L of dehydrate calcium chloride produced the optimal quality of artificial seeds (rigidity, conversion rate and viability). Of the various plant growth regulator combinations used with the microshoot liquid culture medium, the use of 1 mg/L of IBA (indole butyric acid) and 1 mg/L Kinetin was found to be optimal in terms of the conversion rate and viability of artificial seeds. To standardize a medium composition of artificial endosperm …

Influence Of Climate Change And Trophic Coupling Across Four Trophic Levels In The Celtic Sea., Valentina Lauria, Martin J. Attrill, John K. Pinnegar, Andrew Brown, Martin Edwards, Stephen C. Votier

School of Biological and Marine Sciences

Climate change has had profound effects upon marine ecosystems, impacting across all trophic levels from plankton to apex predators. Determining the impacts of climate change on marine ecosystems requires understanding the direct effects on all trophic levels as well as indirect effects mediated by trophic coupling. The aim of this study was to investigate the effects of climate change on the pelagic food web in the Celtic Sea, a productive shelf region in the Northeast Atlantic. Using long-term data, we examined possible direct and indirect 'bottom-up' climate effects across four trophic levels: phytoplankton, zooplankton, mid-trophic level fish and seabirds. During …