Medicine and Health Sciences Commons^™

Perceived Responsibility For The Development Of White Spot Lesions During Orthodontic Treatment, Blake Maxfield

Theses and Dissertations

White spot lesions (WSLs) or decalcifications remain a common complication in orthodontic patients with poor oral hygiene. The purpose of this study was to compare attitudes regarding the development of WSLs among patients, parents, orthodontists and general dentists and improve prevention and treatment protocols through better communication. A survey was developed to evaluate and compare the current opinions of orthodontic patients (n=315), parents (n=279), orthodontists (n=305) and general dentists (n=191) regarding the significance, prevention and treatment of WSLs. All four groups indicated that WSLs did detract from the overall appearance of straight teeth. All four groups indicated that patients were …

Gender Differences In Depression And Immune Response In Colorectal Cancer, Barbara Anne Rose Phd, Msn, Rn

Dissertations

The focus of this descriptive comparative study was to examine the relationship between gender and depression and immune system function in patients with colorectal cancer. The research questions were answered through secondary analysis, using data obtained from the answers of 117 men and women (71 men and 46 women) enrolled in a colorectal cancer study conducted between 1990 and 1991 in Pennsylvania. Descriptive statistics were used to characterize the sample, and general estimating equations were used to analyze depression and immune system function between men and women. Depression was measured by the Beck Depression Inventory, and immune system function was …

Effect Of Auxiliary Preparation Elements On Resistance Form Of Complete Crowns, Manuel H. Guevara

Loma Linda University Electronic Theses, Dissertations & Projects

This study compared the effectiveness of six different auxiliary preparation elements on the resistance to lateral dislodgment of complete crown preparation lacking resistance form.

An ivorine mandibular first molar was prepared with the following characteristics: 20° TOC, 360° shoulder finish line of 1.0 mm width and axial wall of reduced height offering no geometric resistance form (Group A: control). Preparation modifications were Group B: MD grooves, Group C: BL groves (sic), Group D: MDBL grooves, Group E: MD small boxes, Group F: MD large boxes and Group G: 8° TOC at the cervical 2 mm of the axial walls. Ten …

Creating The Patient-Doctor-Family Relationship: Issues Of Power And Gender, Josephine M. M. Perez

Loma Linda University Electronic Theses, Dissertations & Projects

Objectives: To understand how patients, doctors, and families see, form, and commit to relationship and how power and gender influence their interpersonal processes and meanings.

Methods: Grounded theory methodology was used. There were six family medicine physicians, ten patients, and ten family members who participated. Physicians, patients, and family members were matched.

Results: Four themes emerged: types of patient-doctor-family relationships (extended family and traditional), types of care (relationship-centered care (RCC), family-oriented care (FOC), whole-person care (WPC), and patient-centered care (PCC)), commitment and intimacy, and interpersonal processes (perception of relationship shape, bonding, confidence and trust, equality and partnership, mutuality, …

Clergy Stress: Seventh-Day Adventist Pastors In Hong Kong, Singapore, And Taiwan, Onn Liang

Loma Linda University Electronic Theses, Dissertations & Projects

This research utilized an expanded ABC-X model of family stress, one that incorporated the culture and boundary ambiguity constructs of the contextual approach as a paradigm to examine the outcomes of job-related stress experienced by the Seventh-day Adventist pastors in Hong Kong, Singapore, and Taiwan. All together 89 Adventist pastors or 86.4% of the total pastoral workforce in the three regions participated in the 52 self-administered questionnaire survey. In addition, two focus groups made up of 15 pastors in Taiwan were utilized to generate descriptive data related to pastors and their families in the context of stressful situations. This research …

An Evaluation Of Interventions Designed To Impact Nurses : A Pilot Project, Pamela G. Bing Perry

Loma Linda University Electronic Theses, Dissertations & Projects

This pilot project was designed from a systems approach as defined within the field of marriage and family (MFT). Systems theory has been used successfully in examining and working with organizational relationships as exemplified in the work of Edwin H. Friedman. His contribution includes several books specifically developed for use in organizations; one that was tailored for religious groups; and another for managers (Friedman, 2007). While other MFT modalities have also been used effectively with organizations, the complexity of the influences operating within an organization most closely matches the systems approach. For this reason, this is the conceptual framework applied …

A Study Of The Effect Of Splinting On Pain During Tip Pinch For Osteoarthritis Of The First Carpometacarpal Joint, Leana Tank

Masters Theses

The following research project focused on the effect of a prefabricated neoprene first carpometacarpal splint on osteoarthritis pain with tip-pinch, strength measurements of tip-pinch and functional performance. The following questions were explored throughout this study:

1. There will be a significant decrease in mean pain levels when the subject’s hand is splinted as compared to mean pain levels when the hand is not splinted.

2. There will be a significant decrease in mean pain levels for the second session as compared to the first.

3. There will be a significant increase in mean tip pinch strength measurements when the subject’s …

Predicting Intention To Wean From The Bottle Among Hispanic Mothers, Elaine K. Fleming

Loma Linda University Electronic Theses, Dissertations & Projects

Background. Hispanic children carry a disproportionate burden of prolonged bottle use and associated disease. Children in low-income households who use the bottle beyond age 12 months are at risk for iron deficiency anemia, obesity, and early childhood dental caries.

Purpose. The purpose of this study was to identify predictors of intention to wean from the bottle among low-income Hispanic mothers of infants enrolled in the Special Supplemental Food Program for Women, Infants and Children (WIC).

Method. A convenience sample of 266 low-income Hispanic mothers of infants age 5 to 14 months old were categorized into four groups by experience …

Attitudes And Beliefs That Predict Taiwanese Older Adults' Intentions To Attend Strength And Balance Training Programs, Shih-Fan Lin

Loma Linda University Electronic Theses, Dissertations & Projects

The rate of participation in the strength and balance training (SBT) program, an effective fall prevention intervention, is very low among older adults. To increase older adults' participations in SBT programs, this study involved an observational and cross-sectional study design to understand factors that affect Taiwanese older adults' intention to attend SBT programs utilizing the theory of planned behavior. Questionnaires that measured constructs of the theory of planned behavior (attitude, subjective norm, perceived behavioral control, and behavioral, normative, and control beliefs) were collected from 221 community-dwelling Taiwanese elderly women between the age of 55 and 94. Simple correlations and multiple …

Experimental Investigation Of Mixing Time In A Stirred, Torispherical-Bottomed Tank Equipped With A Retreat-Blade Impeller, Nonjaros Chomcharn

Theses

Glass-lined reactors are typically used in the pharmaceutical and specialty chemicals industries because of their material compatibility with most reactants and their cleanability. These reactors are typically equipped with a retreat-blade impeller placed close to the bottom of the tank a single baffle mounted from the top. The mixing performance of such reactors has not received significant attention in the literature, despite their ubiquitous presence in the pharmaceutical industry. In particular, mixing time, i.e., the time required by the system to achieve a predefined level of homogeneity, has not been studied to any significant degree.

In this work, the mixing …

Mixing Performance Of A Novel, Continuous Confined Impinging Jets Mixer Using Competitive Reactions, Han Zheng

Theses

In this work, a novel continuous flow apparatus featuring the impingement of fluid jet streams in the presence of ultrasonic energy provided by an ultrasonic probe was tested using competitive reactions in order to determine its mixing effectiveness. The ultrasonic energy enhances micromixing of the fluid jet streams, which results in an overall mixing effectiveness improvements in different physical and chemical processes.

In the competitive reactions system used here (third Bourne reaction), one stream containing sodium hydroxide was continuously fed to the first impinging jet, while an aqueous solution of hydrochloric acid and ethyl chloroacetate was fed to the second …

Father-Daughter Attachment And Sexual Behavior In African-American Daughters, Karen Hill-Holliday

Theses and Dissertations

Although a relationship has been found in some studies between paternal attachment and female sexual behavior, knowledge of this relationship in African Americans has been limited. The purpose of this research was to determine if there was a relationship between father-daughter attachment, parent teen sexual risk communication and early sexual activity, condom use, history of sexually transmitted infection, global/sexual self-esteem and teen pregnancy in African-American females. An anonymous consent and survey was administered online to N=113 African American college women (age 18-21) attending a southeastern university. Measurements included the Parent Attachment Questionnaire (Father), Rosenberg’s Self-Esteem, Sexual Self-Esteem Inventory (short scale), …

“Design And Synthesis Of Molecular Probes For The Study Of 5-Ht2a And H1 Receptors”, Jitesh Shah

Theses and Dissertations

The serotonin (5-HT) receptors, with seven subtypes and at least fifteen distinct members, mediate a wide range of physiological functions both in the central nervous system and in the periphery. All members of the 5-HT family except the 5-HT3 subtype belong to the family of aminergic G protein-coupled receptors (GPCRs). Over the years, various molecules have been reported which act selectively at 5-HT2 receptors. However, there are no ligands that exhibit complete selectivity for one subpopulation of 5-HT2 receptors. Insight into how drugs bind to 5-HT2 receptors could contribute significantly to the development of subtype-selective agents with enhanced therapeutic effects. …

Development Of Ppar-Γ Receptor Agonists As Therapeutic Agents For Diabetes, Ashwini Goswami

Theses and Dissertations

The peroxisome proliferator-activated receptors (PPARs) are the transcriptional regulators of glucose, lipids and cholesterol metabolisms. It has been established that PPAR-γ is the receptor for thiazolidinediones (TZDs) class of type II anti-diabetic drugs. These compounds act as agonists of PPAR-γ. They may delay the development of type II diabetes in individuals at high risk of developing the condition, and have been shown to have potentially beneficial effects on cardiovascular risk factors. PPAR-γ receptor activation by TZDs improves insulin sensitivity by promoting fatty acid uptake into adipose tissue, increasing production of adiponectin (responsible for glucose regulation and fatty acid metabolism) and …

Perceptions Of Nursing Students Regarding Evidence-Based Practice, Sheleen Tolentino

Master's Projects

The purpose of this descriptive quantitative study was to explore the nursing students' perceptions of their attitude and knowledge regarding evidence-based practice (EBP). The Research Awareness Questionnaire (RAQ), previously used only with healthcare professionals was slightly modified and piloted with senior nursing students (N=22). Eighty-two percent (n=18) of the participants believe that EBP is part of their role. Only 41% (n=9) were confident to undertake research. On the actual knowledge measures, 96% (n=21) could define qualitative research, and 86 % (n=19) correctly defined quantitative research. Suggestions for revising the RAQ are discussed. With modifications, this instrument could be utilized by …

What Is The Perception Of Preparedness Amongst Accelerated Bsn Students Compared To Traditional Bsn Students?, Sheetal Raman-Love

Master's Projects

With today's economic uncertainty, and nursing shortages, many have decided to join the health care industry in hopes of finding financial stability and job security. The impaction of nursing schools throughout the United States has led to the proliferation of accelerated nursing programs. These programs are designed for motivated students who are able to utilize their prior educational experience enabling them to accelerate and complete their BSN degree in a short period of time (Wu, C.Y., & Connelly, C.E., 1992). This study focused on the examination of the length of time in nursing school and the potential influence it may …

Leadership And Dental Aesthetics Of Adults As Perceived By Laypersons, E. Britton Montgomery

Theses and Dissertations

The purpose of this study was to determine if dental aesthetics is perceived by adults to affect an individual’s ability to emerge as a leader. An electronic survey was constructed using facial frontal smiling photographs of 10 patients. Statements were formulated to evaluate four leadership characteristics: intelligence, self-confidence, friendliness, and trustworthiness. Evaluators indicated their level of agreement with each statement for each subject using a 100mm Visual Analog Scale (VAS). Data was obtained from 214 evaluators. Picture ratings were analyzed using repeated-measures mixed-model analyses. Evaluator factors and picture factors were considered when testing for crooked vs. straight teeth differences. There …

Faculty Perceptions Of Interactions Between Students And Registered Nurses In The Clinical Learning Envirorunent, Laurie M. Rosa

Master's Projects

Perceptions of the relationships between nurses and staff were evaluated from a faculty perspective to uncover the ways that the faculty react, respond, and help to support students. During interviews with faculty, access to practice and clinical unit atmosphere emerged as themes. Faculty described nurses granting access to practice by mentoring students and involving them in the entire care of the patient, or nurses who limited students' access to practice through unprofessional behavior, or "cutting corners." Unit atmosphere influenced learning both positively and negatively depending on inclusion of students, morale, and welcoming behaviors of staff. Faculty acted as guides and …

Is Volunteering During Adolescence Associated With A Delay In Pregnancy Until Adulthood?, Diane Bishop

Theses and Dissertations

Purpose: The objective of this study was to determine if regular volunteering during adolescence was associated with a delay in first pregnancy until adulthood. Method: Data for this analysis were drawn from Wave III of the National Longitudinal Study of Adolescent Health (Add Health). Logistic regression was used, controlling for demographic characteristics and pregnancy intention, to estimate the independent contribution of volunteering during adolescence to a delay in first pregnancy until after age 18. Results: One-third of respondents reported regularly volunteering during adolescence. Volunteering significantly differed among those who had a teen pregnancy compared to those who delayed pregnancy until …

Developing An Assay To Profile Upregulated Trek-1, A Stretch-Activated Potassium Channel, In Prostate Cancer, Susan Abigal Surber

Undergraduate Honors Thesis Collection

Prostate cancer is the second leading cause of cancer death in American men. The disease prognosis is significantly limited by the finite therapeutic treatments. The limited treatment options are made worse by the significant reduction in the quality of life that often results from the severe side effects produced by these treatments.1 Therefore, any improvements of current treatments would be advantageous to the clinical setting. Recently, TREK-1, a tandem-pore domain (K2P) potassium channel, has been shown to be upregulated in prostate cancer, but absent in normal prostate tissue.2 The observation that TREK-1 expression is correlated with tumor malignancy suggests that …

Nectin-1 Is Degraded In Chlamydia Trachomatis-Infected Genital Epithelial Cells And Is Required For Herpes Simplex Virus Co-Infection-Induced C. Trachomatis Persistence., Jingru Sun

Electronic Theses and Dissertations

The obligate intracellular bacterium Chlamydia trachomatis is the most common bacterial STD agent in the US. This bacterium has a unique biphasic developmental cycle in which the infectious elementary body (EB) infects a host mucosal epithelial cell and differentiates into the replicative form (the reticulate body or RB) within a modified vacuole called an inclusion. The RB later divides and develops back into an EB and is released, perpetuating the infectious cycle. When developing chlamydiae are exposed to unfavorable environmental conditions, they deviate from the normal developmental cycle into a non-infectious but viable state termed persistence. Previous data from our …

Patients Evaluated For Liver Transplant: Transplant List Denial And Subsequent Outcomes, Kara Elam

Theses and Dissertations

Background: The evaluation process for listing a patient on the liver transplant list is complicated and involves multiple consultations from various specialists, as well as extensive imaging and physiological studies. Although there are data on the outcomes of those listed, we know little about those that are denied listing. This research project will identify the reasons for liver transplant listing denial and predictors of death following denial for this challenging group of patients. Methods: Data from all patients (n=1,500) evaluated for a liver transplant from 1997 to 2007 by the Department of Gastroenterology, Hepatology, and Nutrition located at Virginia Commonwealth …

Physical Activity Among Diabetic Individuals According To Diabetic Treatment Type, Tammie Thompson

Theses and Dissertations

Purpose: To evaluate the physical activity patterns of diabetic adults by the type of treatment they received Method: The study used secondary data collected by the National Health and Nutrition Examination Survey (NHANES) from 2001 to 2006. NHANES is a continuous study which measures the health and nutritional status of non-institutionalized citizens in the United States. To be eligible for the study, participants had to be an adult 18 years or older who responded during the interview phase of the survey that they had diabetes. Participants with any missing data pertaining to the variables were excluded. After exclusions, the final …

Determinants Of Hepatitis B Vaccination Among Adults In The United States: Nhanes 1999-2006, Conschetta Wright

Theses and Dissertations

Purpose: The primary objective of this study was to estimate the prevalence of vaccination and HBV infection status of adults and to evaluate the trend in self reported vaccination and seroprevalence for Hepatitis B for this population. Additionally, this study sought to assess the association between vaccination rates, seroprevalence (HBsAg, anti-HBc, and anti-HBs), demographic (age, gender, location of birth, race/ethnicity), and socioeconomic (annual household income, education level, insurance coverage and access to care, marital status) characteristics. Methods: Eight years, 1999-2006, of the National Health and Nutrition Examination Survey (NHANES) data were used. NHANES participants aged 20-59 years who contributed data …

The Role Of Interferon Gamma In The Regulation Of Il-18 Binding Protein And The Development Of Autoimmune Arthritis In A Genetically Non-Susceptible Mouse Strain, Timothy Daniel Kayes

Theses and Dissertations (ETD)

The etiology of the autoimmune disease rheumatoid arthritis (RA) is unknown, but the role of cytokines, including IFN-g, as effectors of immune cell function has been established by the examination of cytokine production in RA patients and through the use of animal models. C57BL/6 (B6) mice that express MHC class II molecules of the b haplotype (I-A^b) are not typically susceptible to collagen-induced arthritis (CIA), the most widely studied animal model of RA. When the gene encoding IFN-g is removed by genetic deletion, however, susceptibility to CIA is conferred. In addition, T cell responses against the immunogen that …

Distinct Dna Damage Signaling In The Brain Distinguishes Atld, Nbs, And Atr-Seckel Syndrome, Erin Renee Phillips Shull

Theses and Dissertations (ETD)

DNA double strand breaks create a situation of extreme stress under which a cell must either be capable of repairing the lesions in order to continue replication or succumb to death. Not surprisingly, deficiencies in DNA repair genes often lead to human diseases frequently associated with genomic instability, cancer proneness, and neuropathology. Neurological consequences of aberrant DNA repair mechanisms vary depending upon the affected gene and the pathway in which it operates. Ataxia-telangiectasia (A-T) is the prototypical disease associated with DNA double strand break (DSB) repair deficiency and is characterized by severe neural pathology. A-T results from homozygous mutations that …

Mental Skills Usage Among Collegiate Track And Field Throwers, Chad A. Perry

Graduate Theses

The purpose of this study was to examine how often collegiate track and field throwers use goal setting, imagery, and arousal management. The second purpose was to determine if there was a significant difference between mental skills usage in practice and competition. The Test of Performance Strategies was administered to 50 collegiate track and field throwers. First, it was hypothesized that less than 20% of the participants would use mental skills very often and that the majority would report using mental skills in either moderate or low amounts. Results indicated goal setting and relaxation in practice were the only two …

Posttraumatic Stress Disorder In Combat Veterans And The Effect On Their Life And Marital Satisfaction, Amy Rodriguez Alford

Graduate Theses

Various studies have been conducted within our United States military service members and their problems with posttraumatic stress disorder (PTSD). There are several factors as to why a combat veteran can develop PTSD (Committee on Gulf War and Health, 2008) , PTSD could effect their life and marital satisfaction. The present study consisted of 15 married couples, in which the husband has served combat duty in Iraq or Afghanistan. The total level of PTSD symptomology was compared to each individual's life and marital satisfaction. There was no significance correlations found between the husbands' PTSD symptoms and their quality of life, …

Feasibility Of Implementing Technology-Assisted Intervention For The Treatment Of Mental Health-Related Problems In Rural Communities, C. Scott Roper

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

In recent years advances in technology have begun to permeate the everyday lives of citizens in the United States. Technology has affected the way people send and receive information, communication, and entertainment. The world is more connected today than at any other time in history. However, despite this connectivity, there are still rural populations in the United States that remain underserved and disconnected in many areas, including mental health services. This study seeks to understand the feasibility of serving the mental health needs of rural residents through a method of delivery called technology-assisted intervention (TAI). This study polled referral sources, …

The Effects Of A Four Week Single-Leg Balance Training Program On Balance Error Scoring System Scores Of The Trained And Untrained Leg, Roger J. Davies

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The purpose of this study was to examine the effects of a 4-week single-leg stance balance training program on balance error scoring system scores of the trained and untrained leg and to determine any differences between genders for balance performance and cross education. Participants (N = 35) between the ages of 18 - 31 from Utah State University were tested three times over a 4-week period and those in the training group trained for a total of 22 minutes over that same time. Results showed balance improved for the trained leg and the untrained leg as well (p = …