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2006

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Influence Of Surface Chemistry On The Aggregation Of Beta Amyloid Peptide, Mariah Joan Wooldridge Mcmasters Jan 2006

Influence Of Surface Chemistry On The Aggregation Of Beta Amyloid Peptide, Mariah Joan Wooldridge Mcmasters

LSU Doctoral Dissertations

Alzheimer's disease is a progressive neurological ailment affecting 4.5 million aging Americans. The disease is characterized by the presence in the brain of self-assembled fibrils consisting of beta amyloid protein (Aβ). Soluble Aβ protein is present in normal human cerebrospinal fluid, but it is unclear what makes the protein aggregate into insoluble plaques. There is evidence that the Aβ fibril assembly is affected by interactions with biological surfaces, such as neuronal membranes. Here, surfaces consisting of self-assembled alkanethiol monolayers with different end groups were used to test the effect of surface chemistry on the structure and morphology of aggregates formed …

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Infrared Laser Desorption/Ionization Mass Spectrometry: Fundamental And Applications, Mark Little Jan 2006

Infrared Laser Desorption/Ionization Mass Spectrometry: Fundamental And Applications, Mark Little

LSU Doctoral Dissertations

This dissertation on infrared laser desorption/ionization mass spectrometry encompasses fundamental studies of the desorption/ionization process and direct-from-gel laser desorption/ionization applications. Understanding of the fundamentals behind desorption and ionization can lead to improvements in the technique and to new applications. Experiments aimed at advancing this goal are wavelength studies and two-laser infrared/ultraviolet matrix-assisted laser desorption/ionization experiments. The direct-from-gel laser desorption/ionization application in which infrared laser desorption/ionization of analytes directly ionized after gel electrophoretic separation will also be presented. Protein and peptide standards were used as test analytes and the infrared lasers used were a 10.6 micrometers carbon-dioxide laser and a mid-IR …

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Theoretical And Experimental Study On Cable Vibration Reduction With A Tmd-Mr Damper, Wenjie Wu Jan 2006

Theoretical And Experimental Study On Cable Vibration Reduction With A Tmd-Mr Damper, Wenjie Wu

LSU Doctoral Dissertations

Stay cables are vulnerable to dynamic excitations because of their low intrinsic damping. Excessive cable vibrations cause frequent maintenance and are detrimental to the safety of the entire bridge. Targeting the severe cable vibration problem, in addition to using the existing Magnetorheological (MR) damper, the current study proposes a new type of damper, called the Tuned Mass Damper-Magnetorheological (TMD-MR) damper. Theoretical and experimental investigations for the damper performance on the cable vibration reduction are conducted, which provides the necessary research support for practical implementation. Experiments on the individual MR damper are carried out first to gain some experience on the …

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Magnetic, Thermodynamic And Transport Properties Of The Magnetic Semiconductor Fe₁₋Xcoxs₂ And Superconducting Lasb₂, Song Guo Jan 2006

Magnetic, Thermodynamic And Transport Properties Of The Magnetic Semiconductor Fe₁₋Xcoxs₂ And Superconducting Lasb₂, Song Guo

LSU Doctoral Dissertations

In recent years magnetic semiconductors have attracted a great deal of attention because it is thought that they can be used to generate spin polarized current in spintronics, an emerging field where the spin degree of freedom of charge carriers is utilized in microelectronic devices. In this dissertation work, we investigate the magnetic, thermodynamic, and transport properties of the magnetic semiconductor Fe1-XCoxS2 for x less than 0.14, the doping range where Insulator-to-Metal and paramagnetic-to-ferromagnetic transitions occur. We discovered that the Kondo effect is an important ingredient in the paramagnetic region of magnetic semiconductor Fe1-X …

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Spatial Characteristics Of The Remotely-Sensed Surface Urban Heat Island In Baton Rouge, La: 1988-2003, Lynn Copeland Hardegree Jan 2006

Spatial Characteristics Of The Remotely-Sensed Surface Urban Heat Island In Baton Rouge, La: 1988-2003, Lynn Copeland Hardegree

LSU Doctoral Dissertations

Our understanding of urban effects on local climate remains unsatisfactory due to several difficulties: 1) the inherent complexity of the city-atmosphere system, 2) lack of a clear conceptual theoretical framework for inquiry, and 3) the high expense and enormous difficulties of acquiring a sufficient quantity of high-quality, high-resolution (both spatially and temporally) observations in cities. Using remotely-sensed data, this study analyzes urban heat islands (UHI) that are manifested through an elevation in the surface thermal emissions within urban regions known as surface heat islands (SHI). The study area for this research endeavor is Baton Rouge, Louisiana. Whereas the surface air …

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The Sleep Problems Inventory: A Measure For The Assessment Of Sleep Problems In Adults With Intellectual Disabilities, Dennis R. Dixon Jan 2006

The Sleep Problems Inventory: A Measure For The Assessment Of Sleep Problems In Adults With Intellectual Disabilities, Dennis R. Dixon

LSU Doctoral Dissertations

Sleep problems can have a broad impact across the day-to-day functioning of an individual. Persons with intellectual disabilities are at a particular risk for developing sleep problems, with prevalence estimates much higher than is found in the general population. Nonetheless, the assessment of sleep problems in persons with intellectual disabilities has been widely overlooked. The Sleep Problems Inventory (SLEEPY) was created to measure various factors related to sleep problems in persons with intellectual disabilities. The present study represents the first steps in establishing the reliability and validity of the SLEEPY in adults with intellectual disabilities.

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Validity Of The Yale Physical Activity Survey For Older Adults, Angela Nickole Solomito Pugh Jan 2006

Validity Of The Yale Physical Activity Survey For Older Adults, Angela Nickole Solomito Pugh

LSU Master's Theses

The purpose of this study is to determine the validity of the Yale Physical Activity Survey (YPAS) in a population of oldest-old adults residing in Southeastern Louisiana. Methods: Participants were older adults (n=273) in two distinct age groups; 60-81 years of age (YOUNG-OLD) AND 29-103 years of age (OLDEST-OLD). YPAS estimates of physical activity will be compared to physical function as measured by the continuous scale physical function performance test. Results: The OLDEST-OLD demonstrated lower physical function scores and reported less physical activity (and more time sitting) in comparison to the YOUNG-OLD. The correlation between Total Time Summary Index and …

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The Rate Of Decline Of Social Skills Across Dementing And Non-Dementing Individuals With Intellectual Disabilities: A Longitudinal Study, Julia D. Lott Jan 2006

The Rate Of Decline Of Social Skills Across Dementing And Non-Dementing Individuals With Intellectual Disabilities: A Longitudinal Study, Julia D. Lott

LSU Doctoral Dissertations

This study sought to establish rate of decline of adaptive skills in a population of individuals with intellectual disability (ID) and dementia compared to similar persons without dementia, as well as examining the variability of positive and negative social behaviors across diagnostic classes. Among the general population, differential rates of functional decline have been established for normal aging and dementia. This knowledge assists in making differential diagnoses of dementia, establishing prognosis, and long-term planning. For this study, participants in each group were individually matched for age, gender, Down’s syndrome status, and level of ID. Participants in the matched control group …

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Nutrient-To-Cost Comparisons Of Daily Dietary Intake, Food Security Status, And Body Mass Index In Female Food Stamp Recipients Residing In Southeast Louisiana, Shanna Lundy Jan 2006

Nutrient-To-Cost Comparisons Of Daily Dietary Intake, Food Security Status, And Body Mass Index In Female Food Stamp Recipients Residing In Southeast Louisiana, Shanna Lundy

LSU Master's Theses

Diets are typically poorer and risk of chronic disease is greatest in low-income populations. A relationship has been established in the literature between food costs and diet quality, where lower cost diets are generally those of the poorest quality. Food group intake, energy/nutrient intake, and diet cost were assessed in 64 female food stamp recipients in Southeast Louisiana. From one 24-hour dietary recall collected at the beginning of the monthly resource cycle (Day 1) and one at the end (Day 2), nutrient intakes and diet costs were able to be analyzed between different time frames. Participants were divided among food …

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Examining Middle School Students Learning Language Arts Skills In Context, Erica L. Dinkins Jan 2006

Examining Middle School Students Learning Language Arts Skills In Context, Erica L. Dinkins

LSU Doctoral Dissertations

The purpose of this study was to investigate whether the embedded language approach is effective in teaching the traditional language arts curriculum, and whether it holds any advantages over the more traditional approach. Twelve teachers in ten different schools taught language skills using the embedded language approach, while twelve matched teachers explicitly taught the same skills using traditional workbook practice activities for six weeks. Treatment efficacy was assessed using gain scores between pretest and posttest using a battery of informal and standardized measures. In addition, weekly comprehension probes were administered to examine whether language arts skills taught during the week …

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Design And Evaluation Of Automated, Continuous Culture Techniques For Brachionus Rotundiformis, Zhengzhong Zhang Jan 2006

Design And Evaluation Of Automated, Continuous Culture Techniques For Brachionus Rotundiformis, Zhengzhong Zhang

LSU Doctoral Dissertations

A 40-L recirculating rotifer turbidostat (RRT) pilot system consisting of a rotifer reactor, biofilter, foam fractionator, feed container, harvester, and two air-lift pumps was designed to produce B. rotundiformis, a small (S-type) rotifer, that is increasingly demanded for production of small-gape marine finfish larvae. The system’s automatic monitoring (turbidity, pH, conductivity and temperature) and controlling (turbidity, pH, feeding and harvesting) were performed by a Rugid™ computer. A 4 (temperature) x 3 (salinity) study indicated that a 30oC/15 ppt treatment is the most favorable to the growth of B. rotundiformis. Under these conditions, the effect of harvest rate on rotifer system …

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Econometric Essays On Specification And Estimation Of Demand Systems, Anil Kumar Sulgham Jan 2006

Econometric Essays On Specification And Estimation Of Demand Systems, Anil Kumar Sulgham

LSU Doctoral Dissertations

This dissertation focuses on two research themes related to econometric estimation of linear almost ideal demand systems (LAIDS) for U.S. meats. The first theme addresses whether nonstationarity (unit-roots and cointegration) contributes to a dynamic specification of LAIDS models. The results of the effect of nonstationarity are reported in two case studies. The second theme explores the relationship between age and household size with budget shares to specify semiparametric LAIDS model. The results are reported in a third case study that compares parametric and semiparametric models estimates of price and expenditure elasticities. The first case study conducts a comparative analysis of …

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Vegetational Change And Land Degradation In The Lake Baringo Area, Kenya, During The Late Holocene: Evidence From The Paleorecord And Remote Sensing, Lawrence Morara Kiage Jan 2006

Vegetational Change And Land Degradation In The Lake Baringo Area, Kenya, During The Late Holocene: Evidence From The Paleorecord And Remote Sensing, Lawrence Morara Kiage

LSU Doctoral Dissertations

This dissertation investigates the history of vegetational changes and land degradation in the Lake Baringo area, Kenya, East Africa, during the Late Holocene. It uses 14C -and 210Pb-dated fossil pollen, fungal spores, microscopic charcoal, and stratigraphic record from lake-sediment cores to reconstruct the paleoenvironment in the East African region. More recent changes in the Lake Baringo are examined using remote sensing imagery. These data provide one the first high-resolution late Holocene pollen records from the semi-arid region of Kenya (and one of only a handful from East Africa in general). Lake Baringo records a sedimentation rate of 1 cm yr-1, …

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Tropical Pyramids: Dung Beetle Richness, Abundance, And Biomass, Meghan Gabrielle Radtke Jan 2006

Tropical Pyramids: Dung Beetle Richness, Abundance, And Biomass, Meghan Gabrielle Radtke

LSU Doctoral Dissertations

Volume is a proxy for biomass in hard bodied arthropods (P < 0.0001). I constructed biomass-volume equations for Neotropical (P < 0.0001), temperate (P < 0.0001) and 12 Neotropical genera of scarabs, of which 11 were highly significant. The effect of short term (< 1 year) alcohol storage on volume was negligable. I found scarab volume on geologically old soils in the Amazon was one-third that of the geologically young Amazon (P < 0.0001). Species richness (P = 0.0002), Chao 1 (P = 0.0003), Fisher’s  (P = 0.008) and Margalef indices (P = 0.0003) were greater on young soils. Menhinick (P = 0.54), Simpson (P = 0.54) and rarefied species richness (P = 0.24), which correct for sample size differences, indicated no difference in diversity. Young Amazonian soils likely support a higher volume and abundance of scarabs than old soils, but diversity across Amazonia may be similar. I compared beta-diversity of scarab communities across Amazonia. Species rank-abundance curves did not differ among sites whereas volume-abundance distributions and volume-rank abundance curves indicated a larger range of scarab sizes in Brazil than Ecuador. At local levels (<62 km), communities were similar whereas at large distances (>1750 km), they were different. Differences between Brazil and Ecuador may be explained by varied soil age and productivity. I examined the effects of tropical forest fragmentation on scarabs, comparing my results with three other studies from the same site. Among 1, 10, and 100-ha fragments and continuous forest, I found two important trends; beetle biomass and species richness increased with fragment area per sampling effort. Comparing all four studies, diversity increased with fragment size, and by my rarefaction analyses, two studies demonstrated beetle volume increased with fragment size. …

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Validity Of The Reflux Symptoms Index For Post-Pubescent Female Vocalists, Natalie Herpin Overall Jan 2006

Validity Of The Reflux Symptoms Index For Post-Pubescent Female Vocalists, Natalie Herpin Overall

LSU Master's Theses

The Reflux Symptoms Index (RSI), a nine-item self-rated questionnaire, has been suggested as a way of monitoring severity of laryngopharyngeal reflux (LPR) symptoms during treatment. However, limited research has been conducted to assess the validity of the RSI as a way of identifying severity of laryngopharyngeal reflux (LPR) symptoms as differentiated from gastroesophageal reflux (GER) symptoms. Twenty-five post-pubescent female vocalists participated by completing a one-hour voice evaluation, including a Voice Handicap Index (VHI), an RSI, a Reflux Finding Score (RFS) completed with videostroboscopy for visualization of the laryngeal cavity, and analysis of an acoustic sample with the Multi-Dimensional Voice Profile …

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Dynamics Of Globalization In Philippine Scientific Communities, Marcus Antonius Hidalgo Ynalvez Jan 2006

Dynamics Of Globalization In Philippine Scientific Communities, Marcus Antonius Hidalgo Ynalvez

LSU Doctoral Dissertations

This research attempts to shed light on the simultaneous influence of scientifically strong countries on Internet use and knowledge production at the global periphery. Using survey data from interviews of 312 Filipino scientists, this study answers the following questions: (1) Does place of graduate education (i.e., Australia, Japan, the United States and the Philippines) configure scientists’ Internet use? (2) Does Internet use shape scientists’ professional network? (3) Does place of graduate education, Internet use and professional network influence collaboration and research productivity? and (4) How does collaboration relate to productivity when professional network is accounted for? Results show that digital …

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Mothers Grimm And Other House Held Tales, Holly Kay Streekstra Jan 2006

Mothers Grimm And Other House Held Tales, Holly Kay Streekstra

LSU Master's Theses

Mothers Grimm and Other House Held Tales is a body of work that uses fairy tale archetypes and narrative traditions to comment upon tensions and conflicts in sexual self-understanding. This is achieved through a reflection on attitudes that women adopt regarding their own sexuality. Such a reflection is instigated through a presentation of prominent cultural archetypes that exist, no longer as received ideas, but as a bold and entertaining expression of how sex can change our attitude towards those ideas that we often take for granted. Through an assemblage of objects and video, this body of work evokes a domestic …

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Characterization Of Equine Pulmonary Endothelin Receptors In Health And Disease, Sumanth Polikepahad Jan 2006

Characterization Of Equine Pulmonary Endothelin Receptors In Health And Disease, Sumanth Polikepahad

LSU Doctoral Dissertations

Endothelin-1 (ET-1) has been implicated in allergic type of respiratory inflammatory diseases in various species of animals including horses. This peptide elicits its actions by acting through endothelin-A (ET-A) and endothelin-B (ET-B) receptor sub-types. In this project, we have hypothesized that endothelin receptors (both ET-A and ET-B) are altered in terms of affinity and expression, in the lungs of summer pasture-associated obstructive pulmonary disease (SPAOPD)-affected horses. Objective of this dissertation was to determine the alterations in the affinity and expression of endothelin receptors in the lungs of healthy and SPAOPD-affected horses. To pursue our hypothesis, we have employed pharmacological, immunohistochemical …

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The Influence Of A School-Based Substance Abuse Prevention Program In Reducing Smoking Among Sixth Grade African American Students In Louisiana, Alan J. Nichols Jan 2006

The Influence Of A School-Based Substance Abuse Prevention Program In Reducing Smoking Among Sixth Grade African American Students In Louisiana, Alan J. Nichols

LSU Doctoral Dissertations

Youth tobacco smoking is one of the major public health problems of this society. Although, by some reports, adult cigarette smoking has been declining, teen smoking rates continue to remain unacceptably high. Current data indicates that smoking rates among minority youth which had declined in the past few years are beginning to rise again. The current increase in teen smoking and subsequent health dangers associated with smoking demonstrates a need for more effective, empirically based youth smoking prevention strategies. The purpose of this study was to examine the influence of a substance abuse prevention program in reducing smoking among sixth …

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Aerobic Degradation Assessment For The Fungicide Bas 505 Using Batch And Intact Soil Core Methodologies, Jason Allan Mcdonald Jan 2006

Aerobic Degradation Assessment For The Fungicide Bas 505 Using Batch And Intact Soil Core Methodologies, Jason Allan Mcdonald

LSU Doctoral Dissertations

Although registration protocol stipulates that pesticide degradation be quantified using homogeneous soil, research suggests that degradation in intact soil may give results more consistent with field data. This project examined degradation of the turf and cereal fungicide BAS 505 [N-methyl-(E)-2-methoxyamino-2-(2-((2,5-dimethylphenoxy)methyl)phenyl) acetamide]. Yearlong and four-month-long incubation studies compared degradation rates in intact cores and homogeneous (batch) samples of Ruston fine sandy loam (fine-loamy, siliceous, thermic Typic Paleudults) soil. Recovery of BAS 505 in methanol extracts was measured 12 times over the 360 d incubation by HPLC-LSC analysis, and declined to 36 % and 57 % of the amount applied in cores …

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Federalism, Checks And The Welfare State: A Cross National Analysis, Amanda Louise Beal Jan 2006

Federalism, Checks And The Welfare State: A Cross National Analysis, Amanda Louise Beal

LSU Master's Theses

It is often asserted in the institutional literature that there is a trade-off between effective and efficient government. Effective government is often stipulated to be more representative, while efficient government is considered superior at passing legislation. This analysis critiques Arend Lijphart's theory that consensus democracies are more representative, and therefore, result in "kinder, gentler" democracies with more encompassing social policies. I hypothesize that more representative government - operationalized as having higher levels of fractionalization within the legislature, more federalism and more checks within the system - is actually more effective at translating the median voter's preference for occupationally dependent or …

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Tomotherapy For Post-Mastectomy Radiotherapy (Pmrt): Comparison With Conventional Electron Beam Technique, Michael Sissay Ashenafi Jan 2006

Tomotherapy For Post-Mastectomy Radiotherapy (Pmrt): Comparison With Conventional Electron Beam Technique, Michael Sissay Ashenafi

LSU Master's Theses

Purpose: TomoTherapy, capable of delivering intensity-modulated, image-guided radiotherapy with a helical fan-beam, multileaf-collimated beam and detector array mounted on a CT ring, is challenging the treatment techniques commonly used in today's radiotherapy clinic. The present works investigates the potential of using TomoTherapy in lieu of electron beams for treatment of the chest wall in post-mastectomy radiotherapy (PMRT). It is hypothesized that TomoTherapy can plan dose distributions for PMRT patients, that a pre-selected radiation oncologist judges to be equal to or better than that of a conventional plan treated with electron beams. Methods: A patient database of retrospective conventional PMRT treatment …

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Phytoremediation Of A High Phosphorus Soil By Summer And Winter Hay Harvest, Veronica A. Ryan Jan 2006

Phytoremediation Of A High Phosphorus Soil By Summer And Winter Hay Harvest, Veronica A. Ryan

LSU Master's Theses

Phosphorus (P) loading into surface water from runoff and subsurface flow leaving soils subjected to long-term applications of poultry litter (PL) will degrade water quality. A practical way to reduce such loading is to remove soil P through plant uptake and harvest removal. The primary field study presented here examined the effectiveness of hay harvest utilizing a double-cropped system - perennial warm-season forage grass, common bermudagrass (CB; Cynodon dactylon (L.) Pers.), overseeded with annual ryegrass (ARG; Lolium multiflorum Lam.), a cool-season forage, in reducing soil P from a Ruston fine-sandy loam impacted by PL amendments. A secondary field study similarly …

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Spatial Distribution Of Heavy Metals In Louisiana Sediments And Study Of Factors Impacting The Concentrations, Suniti Bhattarai Jan 2006

Spatial Distribution Of Heavy Metals In Louisiana Sediments And Study Of Factors Impacting The Concentrations, Suniti Bhattarai

LSU Master's Theses

To identify the sites with elevated metal concentrations and factors impacting the concentrations, we studied 128 observations on heavy metals collected from the four inch deep sediments in Louisiana lakes and rivers. Use of Fe as a normalizing factor to interpret the site of metal enrichment was justified based on its high correlation with other heavy metals. The regression coefficients of metal/Fe came out to be significant for all the metals in both level and log versions. For the metals, where prediction exceeded upper 95% confidence interval, we mapped the site with factors such as number of industries located within …

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Binding Femininity: An Examination Of The Effects On Tightlacing On The Female Pelvis, Katherine Marie Klingerman Jan 2006

Binding Femininity: An Examination Of The Effects On Tightlacing On The Female Pelvis, Katherine Marie Klingerman

LSU Master's Theses

The corset in eighteenth and nineteenth century Europe was not merely an article of clothing. The corset was a complex and often contradictory social and cultural symbol. It symbolized both the sensual female body and the chaste virgin; the female control over male desires, and the male’s control over the female body. The ubiquity of the corset in the eighteenth and nineteenth century Europe is an important commentary on historical European society. Reports of women (and men) who have died as a result of the tightness of their corsets abound in the literature. Case studies from medical professionals provide information …

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Health Literacy: The Knowledge And Experiences Of Senior Level Baccalaureate Nursing Students, Catherine M. Cormier Jan 2006

Health Literacy: The Knowledge And Experiences Of Senior Level Baccalaureate Nursing Students, Catherine M. Cormier

LSU Doctoral Dissertations

The purpose of this study was to assess the health literacy knowledge and experiences of senior level baccalaureate nursing students enrolled at state universities in Louisiana. Three hundred and sixty-one students from eight baccalaureate nursing programs agreed to participate in the study. The Health Literacy Knowledge and Experience Survey (HL-KES) was utilized to measure the health literacy knowledge and experiences of participants. Participants were able to identify low socioeconomic groups as high risk for low health literacy skills and were strongly aware of the consequences associated with low health literacy skills. Knowledge gaps were evident in the following areas: identifying …

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Development Of Analytical Techniques For The Analysis Of Submicron Particles And Protein Aggregates, Yohannes H. Rezenom Jan 2006

Development Of Analytical Techniques For The Analysis Of Submicron Particles And Protein Aggregates, Yohannes H. Rezenom

LSU Doctoral Dissertations

The goal of the research presented in this dissertation is to develop analytical techniques for the analysis of heterogeneous mixtures of submicron particles and protein aggregates. In Chapter 2, a simple and reproducible technique for constructing perfectly aligned gaps in fused-silica capillaries has been developed for postcolumn reagent addition with capillary electrophoresis (CE) to take advantage of laser-induced fluorescence (LIF) detection. This technique uses laser ablation with a Nd:YAG laser to create gaps of 14.0 ¡Ó 2.2 ƒÝm. These structures have been used for reagent addition for postcolumn derivatization with LIF detection and have been tested for the separation of …

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Analysis Of Bioengineered Concrete For Use In A Submerged Reef Type Breakwater, Tyler Ray Ortego Jan 2006

Analysis Of Bioengineered Concrete For Use In A Submerged Reef Type Breakwater, Tyler Ray Ortego

LSU Master's Theses

The oysterbreak is a method of growing an oyster reef into a wave attenuating device. A study was conducted to determine an optimal material for the oysterbreak. As oysters grow on the oysterbreak, wave energy in the lee of the structure is reduced. It was predicted that more rapid oyster growth would lead to a more rapid reduction of wave energy. Louisiana is losing coastal marshes at an alarming rate. Wave action from storms erodes sediments from Louisiana's shorelines and barrier islands. Structures such as the oysterbreak may be used to protect Louisiana’s fragile shorelines. A material for the oysterbreak …

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Posttraumatic Growth And Ptsd Symptomatology Among Colorectal Cancer Survivors: The Impact Of Emotional Expression And Cognitive Processing, John M. Salsman Jan 2006

Posttraumatic Growth And Ptsd Symptomatology Among Colorectal Cancer Survivors: The Impact Of Emotional Expression And Cognitive Processing, John M. Salsman

University of Kentucky Doctoral Dissertations

There are substantial data exploring the link between religiosity and health, yet there is no consensus regarding the appropriate measurement tool for assessing religiosity in health psychology settings. The purpose of this study was to identify a set of items that could serve as a reliable and valid proxy measure of religiosity. Participants included 251 (M=19.02; range = 17-25) young adults who completed self-report measures of religiosity (Intrinsic-Extrinsic/Revised, Quest Scale, Faith Maturity Scale), psychological distress (SCL-90-R), and personality (NEOPI-R). Individual item pools for religiosity were developed by identifying significant correlations between each of the religiosity measures and the SCL-90-R items. …

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Examination Of Blood Flow Using Vasoconstrictor And Vasodilator Stimuli: Stability And Reproducibility, Robert B. Lestage Jan 2006

Examination Of Blood Flow Using Vasoconstrictor And Vasodilator Stimuli: Stability And Reproducibility, Robert B. Lestage

LSU Master's Theses

Blood flow distribution relies on the vasculature’s ability to vasodilate and vasoconstrict throughout the body. Most previous research has focused on only one of these abilities, either vasodilation or vasoconstriction. For example, Thijssen et al. (2005) focused their research on vasodilation by studying reactive hyperemia, while Kinuyoshi et al. (2003) studied the possible vasoconstriction effect with increasing muscle sympathetic nerve activity. The purpose of this study was to assess vascular function using a variety of stimuli to potentially learn more about overall vascular health, while determining the stability and reliability of blood flow measurements using strain gauge plethysmography. Measures of …

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