Open Access. Powered by Scholars. Published by Universities.®

Medicine and Health Sciences Commons™

Open Access. Powered by Scholars. Published by Universities.®

Theses/Dissertations

Discipline
Institution
Keyword
Publication Year
Publication
File Type

Articles 62581 - 62610 of 70970

Full-Text Articles in Medicine and Health Sciences

High Frequency Pure Tone Audiometry And High Frequency Distortion Product Otoacoustic Emissions: A Correlational Analysis, Kimberly J. Lavoie Jan 2003

High Frequency Pure Tone Audiometry And High Frequency Distortion Product Otoacoustic Emissions: A Correlational Analysis, Kimberly J. Lavoie

Dissertations and Theses

Previous studies show that pure tone thresholds are strongly correlated with distortion product otoacoustic emission amplitudes when evaluating the frequency range from 1 to 8 kHz (Avan & Bonfils, 1993). Little is known about correlations between these two measures at higher frequencies from 9-16 kHz. This study compared pure tone thresholds and distortion product otoacoustic emissions (DPOAEs) in this high frequency range for 29 normal hearing subjects ages 18-30. Pure tone thresholds were obtained at 250-16 kHz and distortion product otoacoustic emissions (DPOAE) 2,211-17,675 were measured in the same ears. DPOAE amplitudes were measured using a constant F1/F2 ratio of …

Go to article

Retaining Intensive Care Nurses In Las Vegas: The Importance Of Nurse Manager Leadership, Megan Vendetti Jan 2003

Retaining Intensive Care Nurses In Las Vegas: The Importance Of Nurse Manager Leadership, Megan Vendetti

UNLV Theses, Dissertations, Professional Papers, and Capstones

In today's healthcare climate, retaining staff nurses is desirable and may be a more permanent solution to improve the nursing shortage. Employing a leadership style that is conducive to staff nurse job satisfaction may be needed to achieve that goal. The purpose of this study was to determine the relationship of the unit manager leadership style with job satisfaction and intent to stay in the intensive care setting. Staff nurses in two Las Vegas hospitals, one private and one public, were surveyed. A questionnaire was developed and voluntarily completed by 125 registered nurses employed in adult and pediatric intensive care …

Go to article

Developing Risk Assessment Maps For Schistosoma Haematobium In Kenya Based On Climate Grids And Remotely Sensed Data, Kelsey Lee Mcnally Jan 2003

Developing Risk Assessment Maps For Schistosoma Haematobium In Kenya Based On Climate Grids And Remotely Sensed Data, Kelsey Lee Mcnally

LSU Master's Theses

It is important to be able to predict the potential spread of water borne diseases when building dams or redirecting rivers. This study was designed to test whether the use of a growing degree day (GDD) climate model and remotely sensed data (RS) within a geographic information system (GIS), could be used to predict both the distribution and severity of Schistosoma haematobium. Growing degree days are defined as the number of degrees centigrade over the minimum temperature required for development. The base temperature and the number of GDD required to complete one generation varies for each species. A monthly climate …

Go to article

Effectiveness Of Copper-Oxide Wire Particles On The Control Of Haemonchus Contortus In Sheep, Ariane Diane Watkins Jan 2003

Effectiveness Of Copper-Oxide Wire Particles On The Control Of Haemonchus Contortus In Sheep, Ariane Diane Watkins

LSU Master's Theses

Among the gastrointestinal nematode parasites that cause the most problems to small ruminants, Haemonchus contortus is one of major concern. Currently, the control of H. contortus and others is almost entirely based on the use of anthelmintics. Consequently, anthelmintic resistance has developed worldwide and this has become a serious problem in small ruminant nematode parasite control programs. In view of this, there is a need for alternative control methods. The use of Copper-Oxide Wire Particles (COWP) to help reduce parasite burden is one such alternative. Three trials were conducted to determine the effect of COWP on the reduction of H. …

Go to article

Optimal Age At Fostering For The Derivation Of Helicobacter Hepaticus-Free Mice, Kem Boullion Singletary Jan 2003

Optimal Age At Fostering For The Derivation Of Helicobacter Hepaticus-Free Mice, Kem Boullion Singletary

LSU Master's Theses

Helicobacter hepaticus is well established as an unwanted variable in laboratory rodent colonies. Historically, caesarean section and embryo transfer have been used to derive Helicobacter-free mouse colonies. Neonatal transfer of newborn mice onto Helicobacter-free foster dams was recently reported as an alternative method of deriving Helicobacter-free mice, but until now, the age by which pups must be fostered to remain Helicobacter-free was unknown. The purpose of this study was to determine the age by which mouse pups must be fostered to remain H. hepaticus-free. Beginning on the day of birth, 20 C57BL/6 mice were fostered from H. hepaticus-positive parents onto …

Go to article

Susceptibility Of Bacillus Anthracis To Gamma And Cherry Bacteriophage, Preston A. Fulmer Jan 2003

Susceptibility Of Bacillus Anthracis To Gamma And Cherry Bacteriophage, Preston A. Fulmer

LSU Master's Theses

Bacillus anthracis is a bacterium that causes severe disease mainly in ruminants, but can affect any mammal, including humans. A popular method for the detection of this organism is susceptibility of the bacterial isolate to g bacteriophage. However, to date no study on the resistance of a wide variety of B. anthracis isolates has been conducted. The following study examines the rate of resistance of a wide range of B. anthracis isolates to g phage as well as another phage specific for B. anthracis known as Cherry phage. We also compared susceptibility to phage with another detection method, susceptibility to …

Go to article

The Relationship Between Spirituality And Quality Of Life In Hiv -Positive Persons., Linda Pennington Grimsley Jan 2003

The Relationship Between Spirituality And Quality Of Life In Hiv -Positive Persons., Linda Pennington Grimsley

All ETDs from UAB

No abstract provided.

Go to article

The Effect Of High Frequency Amplification On Subjective And Objective Benefit With Digital Hearing Instruments, Erica Lynn Fleck Jan 2003

The Effect Of High Frequency Amplification On Subjective And Objective Benefit With Digital Hearing Instruments, Erica Lynn Fleck

LSU Master's Theses

The purpose of the present study was to determine whether amplifying beyond 3 kHz was beneficial to the user, whether the benefit was dependent on degree of loss, and whether subjective data reflected the benefit. Seventeen hearing impaired subjects were binaurally fitted with digital hearing instruments. Qualified subjects were divided into two groups, A and B. Group A had a pure tone average (3,4, and 6 kHz), of 55 dBHL or better. Group B had a pure tone average (3,4, and 6 kHz) greater than 55 dBHL but not exceeding 75 dBHL. Each subject was fit with two conditions (upward …

Go to article

The Development Of Molecular Diagnostics For Breast Cancer, Anna Henrik Israyelyan Jan 2003

The Development Of Molecular Diagnostics For Breast Cancer, Anna Henrik Israyelyan

LSU Master's Theses

Breast cancer is one of the most common malignancies in women. It continues to be a major burden and cause of death among women worldwide. Molecular oncology is now one of the most promising fields that may contribute considerably to diagnosis of breast cancer and its metastases addressing major problems with early detection, accurate staging, and monitoring of breast cancer patients. The overall objective of these feasibility studies was to contribute to improved diagnosis, prognosis, and prediction of breast cancer disease through the development of reagents and protocols for the use of molecular biological advances and the assessment of the …

Go to article

Initiatives To Engage Private-Practice Physicians In The Mission Of Academic Medical Centers, Douglas C. Appleby Jan 2003

Initiatives To Engage Private-Practice Physicians In The Mission Of Academic Medical Centers, Douglas C. Appleby

MUSC Theses and Dissertations

Today's healthcare market presents many challenges to academic healthcare centers and community-based physicians given the constrained resources and competition for healthcare dollars. Never before has the business sector infiltrated the healthcare market to this extent. Monies previously directed toward graduate medical education from government resources and cost-shifting practices have been abolished, and these changes have jeopardized the founding missions governing academic medical centers. However, community-based private practitioners-both educated and clinically trained at these centers of higher learning, provide an enormous pool of expertise to help rectify many current problems. Collaboration between these private practitioners and the medical centers could create …

Go to article

Effectiveness Of Systematic Care Management (Scm) On Neonatal Intensive Care Unit (Nicu) Length Of Stay, Michael Ray Burcham Jan 2003

Effectiveness Of Systematic Care Management (Scm) On Neonatal Intensive Care Unit (Nicu) Length Of Stay, Michael Ray Burcham

MUSC Theses and Dissertations

The increasing frequency and complexity of neonatal care are key contributors to rising medical costs. Over the past twenty years, neonatal delivery rates have been increasing and infant mortality rates are improving. Neonatal care has become very expensive with few applicable clinical guidelines for care. ParadigmHealth has developed an integrated, care management structure termed Systematic Care Management© (SCM). The premise is that by promoting the most expert and efficient neonatal care, significant reductions in morbidity will occur, reducing the need for and reduced cost of NICU and subsequent care. The aim of the study was to determine whether the SCM …

Go to article

Orthodontic Faculty Recruitment And Retention: Goals And Perceptions, Sheldon L. Peck Jan 2003

Orthodontic Faculty Recruitment And Retention: Goals And Perceptions, Sheldon L. Peck

Theses and Dissertations

There is a shortage of faculty in academic dentistry and orthodontics in particular. The purpose of this study was to quantify real and perceived differences in income, workload, and satisfaction between full-time academic and private practice orthodontists. Surveys were returned by 119 (70%) faculty, 79 (36%) private practitioners, and 160 (59%) orthodontic residents. Average annual income for faculty was less than half that of private practitioners. Faculty also reported working significantly more hours per week and taking less vacation time. Though both faculty and practitioners perceived their own jobs to be more satisfying overall, faculty felt academics was more stressful, …

Go to article

Measurement Of Forces And Moments In Three-Dimensional Archwires, Dwight Van Buelow Jan 2003

Measurement Of Forces And Moments In Three-Dimensional Archwires, Dwight Van Buelow

Theses and Dissertations

AbstractMEASUREMENT OF FORCES AND MOMENTS IN THREE-DIMENSIONAL ARCHWIRESBy Dwight V. Buelow, D.D.S.A thesis submitted in partial fulfillment of the requirements for the degree of Master of Science at Virginia Commonwealth University.Virginia Commonwealth University, 2003Major Director: Steven J. Lindauer, D.M.D., M.D.Sc.Chairman and Professor, Department of OrthodonticsOrthodontic tooth movement occurs in response to the application of controlled mechanical force systems. The purpose of this study was to improve understanding of those force systems by evaluating differences between the resultants of two-dimensional and three-dimensional orthodontic appliance activations. An in-vitro model was constructed and three force-moment gauges were used to measure the forces and …

Go to article

K3 Endo, Pro Taper, And Pro File Systems: Breakage And Distortion In Severely Curved Roots Of Molars, Matthew Todd Ankrum Jan 2003

K3 Endo, Pro Taper, And Pro File Systems: Breakage And Distortion In Severely Curved Roots Of Molars, Matthew Todd Ankrum

Theses and Dissertations

K3 ENDO, PRO TAPER, AND PRO FILE SYSTEMS: BREAKAGE AND DISTORTION IN SEVERELY CURVED ROOTS OF MOLARS.By Matthew T. Ankrum, D.D.S.A Thesis submitted in partial fulfillment of the requirements for the degree of Master of Science at Virginia Commonwealth University.Virginia Commonwealth University, 2003Major Director: Gary R. Hartwell, D.D.S., M.S.Chairman and Professor, Department of EndodonticsIt was the aim of this study to investigate the incidence of file breakage and distortion when the Pro Taper, K3 Endo and ProFile systems were used to instrument canals in the severely curved roots of extracted molars.Forty-five roots of extracted mandibular and maxillary molars with curvatures …

Go to article

Evaluation Of Shear Bond Strength Of Two Resin-Modified Glass-Ionomer Cements, Emily Y. Ro Jan 2003

Evaluation Of Shear Bond Strength Of Two Resin-Modified Glass-Ionomer Cements, Emily Y. Ro

Theses and Dissertations

Purpose: To compare the in-vitro shear bond strengths of a new paste-paste formulation of resin-modified glass-ionomer cement (Rm-GIC) to an exising powder-liquid formulation. The study will test the hypothesis that the new paste-paste formulation of Rm-GIC (Fuji-Cem ™, GC Corp, Tokyo, Japan) has the same bond strength as an existing popular powder-liquid formulation of Rm-GIC (Rely-X ™ Luting Cement, 3M, St. Paul, MN)Materials and Methods: A total of 33 human molars were sectioned parallel to the occlusal surface to expose mid-coronal dentin and mounted parallel to the bond shearing device on the universal testing machine (Instron). For Group I samples …

Go to article

Bioavailability Of The Tea Flavonoids Epicatechin And Epicatechin Gallate: Role Of Membrane Transport And Metabolism, Jaya Bharathi Vaidyanathan Jan 2003

Bioavailability Of The Tea Flavonoids Epicatechin And Epicatechin Gallate: Role Of Membrane Transport And Metabolism, Jaya Bharathi Vaidyanathan

MUSC Theses and Dissertations

Tea flavonoids, including (-)-epicatechin (EC), (-)-epicatechin gallate (ECG), (-)-epigallocatechin gallate (EGCG) and (-)-epigallocatechin (EGC) have been shown to have chemopreventive activity in cancer. Studies in animals and humans suggest that these dietary compounds have a very low oral bioavailability. However, the reason behind this limited bioavailability as well as the mechanisms underlying absorption is not clearly understood. The overall hypothesis of this dissertation project is that the human intestinal absorption of (-)-epicatechin (EC) and its gallate, (-)epicatechin- 3-gallate (ECG) is limited and regulated both by multiple transport mechanisms and metabolism. We used the Caco-2 cell monolayers, a well-established model to …

Go to article

Development Of The Neonatal Rat As A Model For Sudden Infant Death Syndrome: Cardiorespiratory Effects Of Ethanol, Rhett Whitman Stout Jan 2003

Development Of The Neonatal Rat As A Model For Sudden Infant Death Syndrome: Cardiorespiratory Effects Of Ethanol, Rhett Whitman Stout

LSU Doctoral Dissertations

The current pathogenesis of Sudden Infant Death Syndrome (SIDS) is unknown. Elevated endogenous ethanol production by gastrointestinal yeast has been proposed as a possible mechanism for SIDS. To investigate the role of ethanol in SIDS, three studies were undertaken. In the first study, transcutaneous blood gas technology was evaluated for repeated monitoring of arterial blood gases. The second study identified the cardiorespiratory responses to inhaled CO2 challenge in juvenile rats, to determine the age corresponding to the age range of peak incidence of SIDS in human infants. Finally, utilizing the optimized juvenile rat model, the cardiorespiratory responses to ethanol and …

Go to article

Alternative Language Sample Analyses For The Assessment Of Low-Income African American Children, Christy Gayle Wynn Jan 2003

Alternative Language Sample Analyses For The Assessment Of Low-Income African American Children, Christy Gayle Wynn

LSU Master's Theses

The purpose of this study was to examine the clinical utility of three language sample analyses when working with low-income, African American (AA) children. Eighteen normally developing and three at-risk AA three-year-old preschoolers participated in the study. Language samples were elicited from each child during a 15-20 minute play interaction. Three language sample analyses, contrastive analysis, average sentence length, and complex syntax use, were completed on each language sample. Also coded was each child’s use of nonmainstream African American English (AAE) patterns. Only the contrastive analysis generated reliable differences between the at-risk children and the normally developing children. Other group …

Go to article

A Comparative Study Of Two Treatment Approaches For Improving Middle School Students' Reading Comprehension, Vessa Annette Cartmill Jan 2003

A Comparative Study Of Two Treatment Approaches For Improving Middle School Students' Reading Comprehension, Vessa Annette Cartmill

LSU Master's Theses

The purpose of this study was to examine the efficacy of having material read to and discussed with learning disabled students (i.e., a compensatory approach termed Accommodated Reading in this study) compared to teaching the literate language of text structures to students (i.e., a language intervention approach termed Communicative Reading Strategies). Participants were two 5th grade students and three 6th grade students, classified as learning disabled according to criteria of the State of Louisiana. Students took part in the study 3 times per week, 40 minutes per day for 5 ½ weeks during their regular speech-language therapy time. After each …

Go to article

The Effects Of Expansion On Objective And Subjective Benefit In Hearing-Impaired Listeners, Ashley B. Hill Jan 2003

The Effects Of Expansion On Objective And Subjective Benefit In Hearing-Impaired Listeners, Ashley B. Hill

LSU Master's Theses

The present research involves two studies. Twenty hearing-impaired participants were divided into two groups depending on their audiometric data and binaurally fit with the Starkey Endeavour 3211 hearing instruments. Experiment I was designed to determine if the use of expansion technology affected objective and subjective benefit in hearing-impaired listeners. Probe microphone measures were obtained at 40, 50, and 60 dB SPL and with the speaker deactivated to ensure that the expansion feature was functioning. Listener performance was measured in quite using the Connected Speech Test (CST) and in noise using the Hearing in Noise Test (HINT) at 40, 50, and …

Go to article

Characterization Of Protein Secretion In Mycobacterium Leprae Using Phoa Fusions In Escherichia Coli And Mycobacterium Smegmatis, Marina Noemi Torrero Jan 2003

Characterization Of Protein Secretion In Mycobacterium Leprae Using Phoa Fusions In Escherichia Coli And Mycobacterium Smegmatis, Marina Noemi Torrero

LSU Doctoral Dissertations

Complete sequencing and annotation of the M. leprae genome has provided new information related to proteins constituting its hypothetical proteome. Since M. leprae can not be grown in vitro, novel approaches are needed to determine which proteins are expressed during infection and whether these proteins are related to pathogenesis. Secreted proteins represent a distinct group of protein with respect to their structure and function, contribution to virulence and are of particular importance for vaccine development because they are often immunogenic and have the potential to be recognized early in infection. The objectives of this study were: 1) to identify putatively …

Go to article

Role Of Endothelin-1 In The Gastrointestinal Tract Of Horses In Health And Disease, Ramaswamy Monickarasi Chidambaram Jan 2003

Role Of Endothelin-1 In The Gastrointestinal Tract Of Horses In Health And Disease, Ramaswamy Monickarasi Chidambaram

LSU Doctoral Dissertations

Gastrointestinal tract disease is the leading natural cause of death in horses and horses with ischemic intestinal disease have the greatest mortality. We hypothesized there is basal synthesis of endothelin-1 (ET-1) in the intestinal tract of healthy horses that is likely involved in regulating vasomotor tone, secretion and motility and that ET-1 synthesis increases with gastrointestinal tract disease, which may be involved in the pathophysiology of these disorders. Plasma ET-like immunoreactivity was increased in horses with naturally-acquired gastrointestinal disease, compared with normal horses; values were greatest in horses with large intestinal strangulation obstruction, enterocolitis and peritonitis. There was an association …

Go to article

Role Of Endothelin In The Pathogenesis Of Acute Laminitis In Horses, Ashley Michelle Stokes Jan 2003

Role Of Endothelin In The Pathogenesis Of Acute Laminitis In Horses, Ashley Michelle Stokes

LSU Doctoral Dissertations

Acute laminitis is a severely debilitating disease of the laminae of the equine digit; however, the mechanism(s) of pathogenesis have yet to be fully elucidated. In physiologic states, the endothelium synthesizes substances, such as nitric oxide (NO; vasodilator) and endothelin-1 (ET-1; profound vasoconstrictor), which play a crucial role in vasomotor regulation. The overall hypothesis is that the initiating factor in the onset of acute laminitis is a disruption in the balance between NO and ET-1, which leads to digital vasoconstriction and subsequent laminar ischemic necrosis. In vitro studies with digital vessels from healthy horses and horses with naturally-acquired laminitis determined …

Go to article

Equine Immunity To Cyathostome Infections, Marie Alexandra Baudena Jan 2003

Equine Immunity To Cyathostome Infections, Marie Alexandra Baudena

LSU Doctoral Dissertations

To study the protective responses of cyathostome-infected ponies, two challenges were performed employing animals with different histories of exposure to these parasites. The hypothesis developed and to be tested in these experiments was that ponies that had longer exposure to cyathostome contaminated pastures would express acquired resistance to infection. The assumption behind this hypothesis was that helminth-naïve ponies infected with cyathostomes would eliminate the infection using only innate immune responses. Whereas previously exposed ponies would eliminate the infection with acquired immune responses, and these would be more effective in ponies with longer exposure to cyathostomes. Thus, helminth-naïve animals would acquire …

Go to article

Immunological, Hematological, And Serum Biochemical Effects Of High Level Dietary Fish Oil And Vitamin E Supplementation In The Dog, Casey J. Leblanc Jan 2003

Immunological, Hematological, And Serum Biochemical Effects Of High Level Dietary Fish Oil And Vitamin E Supplementation In The Dog, Casey J. Leblanc

LSU Doctoral Dissertations

Inflammation is a component of the innate immune response. However, severe or prolonged inflammation can be detrimental. Dietary n-3 fatty acid supplementation has proven clinical benefits in chronic inflammatory diseases, most likely due to reduced synthesis of inflammatory mediators and inhibition of lymphocyte proliferation and function. The purposes of this study were to characterize alterations in inflammatory mediator production, and lymphocyte proliferation, in dogs fed a diet consisting of 0.65% n-3 fatty acids (DMB) with an n-6:n-3 fatty acid ratio of 3.4:1. Fifteen dogs were randomly assigned to one of three dietary groups for twelve weeks. Group Sunflower oil received …

Go to article

The Effects Of Intra-Articular Silicone Polymer On Synovial Fluid, Synovial Tissue, And Articular Cartilage In The Equine Middle Carpal Joint, Marilyn Rumbaugh Jan 2003

The Effects Of Intra-Articular Silicone Polymer On Synovial Fluid, Synovial Tissue, And Articular Cartilage In The Equine Middle Carpal Joint, Marilyn Rumbaugh

LSU Master's Theses

There is anecdotal documentation that intra-articular administration of liquid silicone is used as a lubricant for equine joints. Effects of silicone polymer on equine articular cartilage and synovial fluid have not been evaluated. The objectives were to characterize the effects of intra-articular administration of liquid silicone polymer on clinical, synovial fluid, and microscopic features in normal middle carpal joints of horses, and to determine if silicone migrates to the axillary lymph nodes. Eight adult horses were used in this study. Two mLs of 1,000 centistoke, medical-grade silicone was injected into one randomly selected middle carpal joint. The opposite middle carpal …

Go to article

The Effect Of Aging On The Immune Response To Vaccination In The Horse, Daniel H. Fermaglich Jan 2003

The Effect Of Aging On The Immune Response To Vaccination In The Horse, Daniel H. Fermaglich

LSU Master's Theses

Vaccination programs are designed to protect an animal from infection, however, depending upon the age and health of the animal vaccination may not stimulate a protective humoral response. It is possible that, as in the human and mouse models, geriatric equines may be less responsive than their younger counterparts to current vaccination protocols. The purpose of this study was to identify an age related diminution in the primary and secondary immune responses of geriatric horses in response to vaccination. Two groups of horses were sampled. The first group consisted of an open herd of 39 privately owned horses, varying in …

Go to article

Occupational Therapy Sensory Integration Protocol For Early Intervention: Birth To Three Years, Reagan Boyson Jan 2003

Occupational Therapy Sensory Integration Protocol For Early Intervention: Birth To Three Years, Reagan Boyson

Occupational Therapy Capstones

No abstract provided.

Go to article

Prevocational Programming For A Dual Diagnosis Population, Brandi L. Breitbach, Apryl J. Molstad Jan 2003

Prevocational Programming For A Dual Diagnosis Population, Brandi L. Breitbach, Apryl J. Molstad

Occupational Therapy Capstones

No abstract provided.

Go to article

Electrical Stimulation For Post-Cva Individuals, Jennifer Carlson Jan 2003

Electrical Stimulation For Post-Cva Individuals, Jennifer Carlson

Occupational Therapy Capstones

No abstract provided.

Go to article

First Prev Next Last