Medicine and Health Sciences Commons^™

Reactions Of Organic N-Chloramines In The Gastric Fluid Of The Rat, Kathryn E. Mazina

Chemistry & Biochemistry Theses & Dissertations

Using chlorine as a drinking water disinfectant may have potential health effects due to its reactivity with organic amino nitrogen compounds found in the stomach. Organic N-chloramines have been shown to form in the stomachs of laboratory rats. The possible reactions of N-chloramines in the stomach fluid were examined in this study using a model radiolabeled N-chloramine. ³⁶Cl-N-Chloropiperidine, was synthesized and purified to remove ³⁶Cl-chloride. Stomach fluid was obtained from Sprague-Dawley rats which had been first fasted for 24 or 48 hours and then administered 3 mL of deionized water. Different concentrations of radiolabeled chloramine were reacted with …

Psychologists' Volunteering: Attitudes, Beliefs, And Behaviors Toward Psychotherapy Research, James Perry Howell

Psychology Theses & Dissertations

Psychologists' volunteering behavior and attitudes toward psychotherapy research were studied using a mail survey. A random sample of 248 male and 248 female doctoral-level members of Division 29 (Psychotherapy) of the American Psychological Association served as subjects. The cover letter requesting their participation in this study contained the systematic manipulation of variables believed to affect volunteering behavior: recruiter gender, normative nature of volunteering for the study, and perceived social importance of the study. The therapist variables of gender, age, and years of experience were also studied in order to determine if volunteerism might result in biased sampling across these variables. …

A Comparison Of Nursing Role Conceptions Among Baccalaureate Nursing Students, Their Nursing Faculty, And Clinical Nurse Mentors, Michele Lynn Musella

Nursing Theses & Dissertations

This descriptive study focused on the bureaucratic, professional, and service role conceptions of nurses. It was hypothesized that there are significant differences in the ideal and actual perceptions of these role orientations among baccalaureate nursing students, their nursing faculty, and their clinical nurse mentors. The three subscales of Pieta's 1976 Nursing Role Conception Scale (NRC) were used. The results of a discriminant analysis indicated significant differences in professional and service nursing role conceptions among students and both their nursing faculty and clinical mentors (p

Clinical Effects Of Daily Rotary Electric Toothbrushing On The Presence Of Gingivitis And Supragingival Dental Plaque, Laura Jean Mueller

Dental Hygiene Theses & Dissertations

The purpose of this investigation was to determine if statistically significant differences existed in the gingival health of subjects who brushed with a rotary electric toothbrush (Rota-dent^R when compared to a conventional toothbrush (Oral B-35^R). A randomized, two group research design was employed using forty subjects. At baseline and at two week intervals for six weeks, gingivitis and supragingival dental plaque were measured by the Loe and Silness Gingival Index and the O'Leary Plaque Index, respectively. Multivariate analysis revealed that the Rota-dent^R was superior to the conventional toothbrush in reducing dental plaque accumulation and equally effective …

The Effectiveness Of Oral Health Computer Assisted Instruction On Increasing The Oral Hygiene Status Of Children, Claudia Ann Michalak

Dental Hygiene Theses & Dissertations

This study investigates the effectiveness of computer assisted instruction on the oral hygiene status of children. Over a one month period, as measured by the Personal Hygiene Performance Index, sixty-five fifth grade students participated in one of three intact groups: oral health computer assisted instruction, traditional oral health instruction, or no oral health instructions. Oral health instructions were identical in content for computer assisted and traditional lecture formats. During pretest evaluations, students were presented with a dental kit containing a toothbrush, toothpaste, floss, and an oral health instruction pamphlet. The Personal Hygiene Performance Index was performed on each student prior …

The Antimicrobial Effectiveness Of Isopropyl Alcohol, Phenylphenol, And Nonphenal Oxyethylene Iodine Complex On Dental Operatory Surfaces, Maureen Anne Lawless

Dental Hygiene Theses & Dissertations

No abstract provided.

Testing Orem's Dependent Care Agency Construct: Parents As Health Educators In The Home, Joann M. Baldwin

Nursing Theses & Dissertations

The capacity of parents to act as health educators in the home is proposed as a functional piece of Orem's dependent care agency construct. A new data collection instrument, the Health Education Questionnaire, was developed to explore the conceptual dimensions of an intellectual pre-production phase of health action-taking. Parents' self-reported knowledge and beliefs regarding selected health topics, as well as their perceptions of ego strength and valuing health were proposed as independent factors in dependent care agency related to health education in the home. Methodology included the investigation of reliability using Cronbach's alpha and validation of the agency construct using …

Pre-Natal Learning Needs Perceptions Of Expectant Parents And Childhood Educators, Cynthia Divens Sweeney

Nursing Theses & Dissertations

The purpose of this study was to examine the differences between the unique learning needs of expectant parents and those perceived by childbirth educators. A purposive sample of 40 expectant parents and ten childbirth educators completed the Expectant Parents Learning Needs Tool (EPLNT) and a demographic inventory developed by the researcher. Subjects were classified into five groups based on their status as first-time fathers, repeat fathers, first-time mothers, repeat mothers, and childbirth educators. Data were analyzed using t-tests for independent samples and an ANOVA for group differences. The results showed significant differences in the learning needs between the expectant parents …

Short Term Temporal And Spatial Variability Of Phytoplankton In The Elizabeth River, Robert L. O'Reilly

Biological Sciences Theses & Dissertations

This study was designed to evaluate short-term temporal and spatial components of phytoplankton variability within a tidal estuarine system, in reference to natural changes in the local environment.

Multiple water samples were collected weekly from October to December 1984 at 4 stations in different branches, or sections, of the Elizabeth River. Collection of chlorophyll~ data was structured to fit an analysis of variance, while the phytoplankton species and their environmental relationships were analyzed using multivariate techniques.

Lower chlorophyll a concentrations from 0.75 to 2.87 ug/1 were characteristic of the Main Stem and Southern Branch, while higher values of 1.27 …

Variant Forms Of Ataxia Telangiectasia, A. M. R. Taylor, E. Flude, B. Laher, Michael W. Stacey, E. Mckay, J. Watt, S. H. Greens, A. E. Harding

Bioelectrics Publications

Two ataxia telangiectasia patients with unusual clinical and cellular features are described. Cultured fibroblasts and PHA stimulated lymphocytes from these two patients showed a smaller increase of radiosensitivity than cells from other A-T patients, as measured by colony forming ability or induced chromosome damage respectively, after exposure to ionising radiation. The response of DNA synthesis to irradiation of these cells was, however, the same as for other A-T patients. Cells from a third patient with some clinical features of A-T but with a very protracted course also showed low levels of radiation induced chromosome damage, but colony forming ability and …

The Spherical Vision, Nancy Topping Bazin

English Faculty Publications

Virginia Woolf's experiences as a manic-depressive influenced her vision of reality and, in tum, her aesthetics. Manic-depression is a "cyclic" illness-cyclic in the sense that the manic-depressive moves alternately between two extreme psychological states. Hence, he experiences reality in terms of two opposite perspectives. Psychotic depression involves what Jung describes as the experience of the "shadow." That is, looking into the unconscious, the individual sees his own reflection. He takes a risk in looking, for as Jung says, "The mirror does not flatter, it faithfully shows whatever looks into it; namely, the face we never show to the world because …

The Effects Of Various Lumbar/Sacral Back Support Systems Upon Human Peak Muscular Force, Total Work, And Average Power, Michael Lee Woodhouse

Theses and Dissertations in Urban Services - Urban Education

The purpose of the present investigation was to study the effects of two lumbar/sacral back supports upon peak muscular force, total work, and average power. Subjects consisted of ten well conditioned male volunteers with an age range of 21-35 years. Each subject volunteered individually to participate and was required to read and sign an inform consent form prior to participating in the investigation.

The investigative design was quasi-experimental with a repeated measures (treatment-by-subjects) methodology. Each subject experienced three testing treatments to include each lumbar/sacral support and one without. The testing protocol consisted of three isokinetic back testing devices developed by …

Biochemical And Histological Evaluation Of Normal Human Epidermis Vs Cultured Human Epidermis, Ngo Thi Bich Lien

Biological Sciences Theses & Dissertations

Cultured human keratinocytes were grown in vitro for transplantation purposes in case of severe burns. Single keratinocytes were harvested from human epidermis and grown in culture flasks such that multilayered sheets of keratinocyte cells were harvestable in approximately three weeks. In order to evaluate cultured epidermis for equivalency with normal human epidermis, biochemical and histological studies were performed. Thin sections of cultured epidermis were shown to be composed of cells that had undergone developmental differentiation, but not terminal differentiation. Biochemical analyses of keratin and prekeratin proteins isolated from cultured epidermis indicated that cultured keratinocytes have electrophoretic patterns similar to keratins/prekeratins …

A Comparison Of Myofascial Release And Ultrasound In The Treatment Of Musculoskeletal Pain, Dianna Lynn Bishop

Community & Environmental Health Theses & Dissertations

The purpose of this study was to evaluate the effectiveness of myofascial release (MFR) compared to ultrasound (US) in treating musculoskeletal pain. Data in the form of number of trigger points, active range-of-motion of the affected joint, pain scale measurement, and a Treatment Response Questionnaire score, were collected.

The Mann-Whitney U value supported that the MFR group outranked the US group 47 percent when ranking the percent change in trigger point number from pre to post treatment.

The Mann-Whitney U value supported that the MFR group outranked the US group in pain scale measurement. Kruskal-Wallis H value supported that MFR …

The Synthesis And Evaluation Of The Cardiovascular Activity Of Novel Imidazole Ring Systems, Joseph E. De Los Angeles

Chemistry & Biochemistry Theses & Dissertations

An investigation was undertaken to synthesize and evaluate the cardiovascular activity of two imidazole ring systems. Imidazoles with hypotensive activity would provide novel potential antihypertensive drugs. These novel structures may also find use as chemical probes in the study of the cardiovascular system and as prototypes for other potential cardiovascular agents.

The histamine derivative, 7,7-dipyridyl-4,5,6,7-tetrahydroimidazo-[4,5-c]pyridine (ligand l), was demonstrated to possess significant hypotensive activity in laboratory rats. A 15 mg/Kg dose of ligand 1 produces a statistically significant decrease in blood pressure when injected IP. This hypotensive effect is also associated with marked increase in heart rate. Although compound 1 …

Use Of Two Data Collection Strategies To Evaluate Stressors And Coping In Spouses Of Patients Sustaining A Myocardial Infarction, Pamalla Manz Stockho

Nursing Theses & Dissertations

This study compared stressors and coping mechanisms identified by spouses of myocardial infarction (MI) patients in a close-ended, self-administered questionnaire (SAS) and an open-ended, nurse-administered questionnaire (NAS). Twenty female participants were divided into two groups and completed the NAS, SAS, and demographic information. The purpose of dividing the group was to explore possible experimenter effect. One group was administered the NAS preceding the SAS. The second group completed the SAS preceding the NAS. Qualitative analysis revealed equivalent stressors and coping mechanisms identified by the NAS and SAS. Stressors related to the MI decreased over time for spouses whose husbands made …

The Image Of The Nurse In A Professional Journal: A Historical Perspective, Dawn Louise Crane

Nursing Theses & Dissertations

Authors of journal articles contribute to the image of the nurse that is projected to journal readers. The purpose of this study was to explore the image of nursing as portrayed in articles published in Nursing Outlook from 1960-1979. A descriptive study, with content analysis, was conducted using articles concerned with professionalism or nursing education published in Nursing Outlook from 1960-1979 (a time identified as negative for societal images of nursing). The educational background of the authors was noted. Findings indicated that the majority of authors projected the image of a nurse as a well-educated, independent professional; images not reflective …

A Comparative Analysis Of Head Nurse Role Perceptions In Acute Care Hospitals, Margaret A. Miller

Nursing Theses & Dissertations

This study examined the perceptions of 43 head nurse participants from private, voluntary and government hospital settings. Utilizing a tool adapted by the researcher, the Head Nurse Role Questionnaire (HNRQ), the study sought to explore five areas of job context: Job Variability, Job Expertise, Job Definition, Job Capacity and Job Incentives. Differences in perceptions were analyzed utilizing descriptive statistics and Analyses of Variance. The three organizational dimensions of this study included: standardization, formalization and organizational culture. Findings revealed significant differences in Job Definition. Descriptive statistical results indicated differences in hospital settings. Qualitative analyses displayed three categories of head nurse attributes …

Effectiveness Of A Hydrogen Peroxide, Sodium Chloride, Sodium Bicarbonate Dentifrice Upon Microbiota Associated With Periodontitis, Jill M. Modi

Dental Hygiene Theses & Dissertations

The purpose of this study was to investigate the effectiveness of a hydrogen peroxide, sodium chloride, sodium bicarbonate dentifrice upon quantitative changes in the sulcular microbial species Bacteroides melaninogenicus and in the gingival condition and plaque accumulation associated with periodontitis. Fifteen subjects from the Hampton Veteran's Administration Medical Center w e r e selected according to a standard criteria. Split mouth experimental design was used. One arch of each patient was assigned randomly to periodontal instrumentation. Half the mouth then was assigned randomly an experimental or a control dentifrice to be utilized once daily. culture analysis, the Gingival Index and …

Determination Of Human Sperm Cell Acrosin Activity From Normal And Subfertile Men, Dilrowshan H. Haque

Chemistry & Biochemistry Theses & Dissertations

Acrosin is an acrosomal enzyme which is reported to be involved in sperm penetration through cumulus, zona, and ooplasma. This enzyme has been reported to be significantly lower in sperm of infertile men compared to sperm of fertile men. The acrosin assay which has been developed can be used for studies in patients with suspected infertility and may be used on a fraction of most semen specimens being evaluated in a clinical andrology laboratory.

Within-run precision studies yielded coefficients of variation of 11% for a low-activity pool and 9% for normalactivity pool specimens. Between-run precision studies using a single donor …

Effects Of Air Polishing And Rubber Cup Polishing On Enamel Abrasion, April Kee

Dental Hygiene Theses & Dissertations

An investigation was conducted to determine if statistically significant differences in enamel abrasion occurred when molar specimens were air polished (AP) and rubber cup polished (RCP). Thirty human molars were randomly divided into two groups. Molar buccal surfaces were masked longitudinally to provide control surfaces. Each polishing technique was applied for two minutes and thirty seconds on fifteen exposed enamel surfaces. Buccal enamel surfaces were divided into coronal and cervical sections for microscopic review. Six enamel thickness measurements were determined for each coronal and cervical enamel section using the scanning electron microscope. Measurements of AP and RCP coronal and cervical …

Factors That Influence Prepared Childbirth Couples' Use Of Epidural Anesthesia For Labor And Delivery, Terri S. Chambers

Community & Environmental Health Theses & Dissertations

The purpose of this study was to identify factors that influence a Prepared Childbirth couple's decision to utilize epidural anesthesia for labor and delivery. Review of the literature indicated a high correlation between epidural use for uncomplicated labors and deliveries and a high incidence of maternal complications and low neonatal neurological and behavioral scores.

A sample of twenty-nine couples was used in this prospective, non-experimental field study for the research. Data were collected utilizing two developed demographic and factual event tools, Rotter's Internal-External Locus of Control Tool and Spanier's Dyadic Marital Adjustment Tool.

Three hypotheses were developed and data were …

Preferred Provider Organizations: Developmental Indicators, Marcia Anne Guida

Community & Environmental Health Theses & Dissertations

The purpose of this research was to determine what factors, if any, led to the development of a preferred provider organization and if these factors were related to sponsorship. A survey instrument was developed and mailed to a random sampling of 90 existing preferred provider organizations' executive directors for their completion. A Two-Factor Contingency Table Analysis was compiled. Chi-square, and the Contingency factor, C, were computed and tested at the .05 level of significance. First and second preference analyses were done on the responses to developmental indicators. Mean percentages were tallied for: sponsorship, tax status, alternative delivery systems in the …

Clinical Effectiveness Of ListerineR And ViadentR Mouthrinses On Bacterial Plaque And Gingivitis, Debra Pizzola Powell

Dental Hygiene Theses & Dissertations

The purpose of this investigation was to determine the effects of two commercial mouth rinses, Listerine^R and Viadent^R, on bacterial plaque and gingivitis. over a sixweek period, 24 adults, ages 18-41, were examined for the amount of bacterial plaque and level of gingivitis using Silness and toe's Plaque Index (PLI) and Gingival Index (GI). At the beginning of each two week period, subjects were examined for the amount of plaque and level of gingivitis and given a different mouthrinse: appointment one--viadent^R (mouthrinse A), appointment two--placebo mouthrinse (mouthrinse B), and appointment three--Listerine^R (mouthrinse C). Additionally, subjects …

Pregravid Weight, Prenatal Weight Gain And Maternal Age As Risk Factors In Pregnancy-Induced Hypertension Development, Maryellen C. Remich

Nursing Theses & Dissertations

This study examined whether the factors of pregravid weight, total prenatal weight gain at twenty-eight weeks and maternal age correlated with the development of pregnancy-induced hypertension in the third trimester. An ex post facto chart review of low risk primigravidas attending a public health maternity clinic was performed. A multiple regression correlation procedure demonstrated no significant correlation between the variables. Significant results of Chi-sguare tests of independence were demonstrated between low maternal age and pregnancy-induced hypertension development and between the failure of the mean arterial pressure to decrease in the second trimester and the development of pregnancy-induced hypertension in the …

The Effects Of Luteinizing Hormone And Adenosine 3',5'-Cyclic Monophosphate On Phospholipid Metabolism By Luteal Mitochondria, Jim John Sadighian

Chemistry & Biochemistry Theses & Dissertations

Luteinizing hormone (LH) increases intracellular concentrations of adenosine 3', 5 '-cyclic monophosphate and the phosphoinositides, phosphatidylinositol (PI), PI 4'-phosphate (PIP) and PI 4' .5 1 - bispbosphate (PIP₂). It is believed that cAMP and the phosphoinositides act concertedly to regulate mitochondrial conversion of cholesterol to pregnenolone. This study examined the effects of LH and N⁶ ,O² -dibutyryl cAMP (dbcAMP) on phospholipids metabolism by luteal mitochondria and the influence of dbcAMP and the phosphoinosi tides on mitochondrial steroid production. Mitochondria were isolated from unincubated and incubated luteal tissue by differential centrifugation. Phospholipids were extracted from the mitochondria …

The Effectiveness Of Stimulation Therapy For The Cognitively Impaired Elderly, Sylvia H. Old

Community & Environmental Health Theses & Dissertations

The effectiveness of stimulation therapy for the cognitively impaired elderly living in an institution was assessed. Residents with varying degrees of cognitive impairment were treated with twenty, thirty-minute daily periods of reality orientation, reminiscence, resocialization, remotivation, and other stimulating therapies and were compared with a control group_ receiving no intervention. Treatment effects were assessed with a variety of instruments reflecting functioning across several domains. Included were ability to perform both basic self-care functions and activities of daily living, cognitive performance, affect, and satisfaction with the care received and the living environment in the nursing home. The experimental group was divided …

The Distribution Of Ceratia Over The Mid-Atlantic Bight, Paul V. Zimba

Biological Sciences Theses & Dissertations

The distribution and concentration of Ceratium species, between Cape Hatteras, North Carolina and Long Island, New York ls discussed in relation to specific physical factors and the development of a phytoplankton bloom. The progression of high Ceratium counts Is discussed for the Bight areas of New York, Delaware, and the Chesapeake Bay (April through June). The concentration of Ceratium species declined after June, with highest concentrations along the New York and Delaware coast-lines. Coastal regions (less than 12 km from shore) were associated with high concentrations of several species. Path and regression analysis were used to relate physical factors and …

The Role Of The Nurse Middle Manager In A Military Health Care Setting, Terry Brown

Nursing Theses & Dissertations

This study examined the expectations and perceptions of 63 military nurse participants from all levels of the nurse hierarchy for the role of the military nurse middle manager. Utilizing a tool developed by the researcher, the MMRQ, the study sought to explore role clarity and the importance of the management principles: planning, organizing, staffing, directing, and controlling. Relationships and differences in nursing perceptions were analyzed using Pearson Correlation and Discriminant Analysis. Although the hypothesis of no relationship between expectations and perceptions could not be supported, findings revealed role confusion for two nurse hierarchical levels. The study showed military nurses differed …

The Short Term Effect Of A Dental Health Fair On Children's Attitudes Toward Plaque Control, Fluorides, Nutrition, And Receiving Dental Treatment, Sue Nell Bethea

Dental Hygiene Theses & Dissertations

The purpose of this investigation was to determine if a significant difference exists between dental health attitudes of children who are exposed to a dental health fair and children who are not exposed to a dental health fair. All consenting students, in grades four through six . from two Hampton public schools, completed a Dental Health Questionnaire designed to assess attitudes toward dental health. One day after the experimental group participated in the dental health fair, both groups were post-tested using the same questionnaire. Two weeks after the dental health fair, an identical posttest was readministered to both groups. Two-way …