Medicine and Health Sciences Commons^™

Validation Of Passive Air Sampling Monitors Onboard United States Navy Submarines, Larry A. Mcfarland

Community & Environmental Health Theses & Dissertations

An operating submarine creates a unique air quality mixture of compounds that result from a combination of human metabolism, construction materials, materials brought onboard and compounds created through the interaction of ship systems. A comprehensive study of submarine atmospheres is ongoing during deployments of U.S. Navy nuclear submarines. As part of the overall effort, a paired air sampling comparison field validation was conducted to compare the air sampling effectiveness of passive diffusive monitors compared to more traditional active air sampling methods when sampling for acrolein, formaldehyde and ozone in the enclosed submarine atmosphere. Acrolein monitors containing 2-hydroxymethylpiperidine (HMP) impregnated glass …

Signal Modeling With Non-Uniform Time Sampling Of Features For Automatic Speech Recognition, Montri Karnjanadecha

Electrical & Computer Engineering Theses & Dissertations

This dissertation presents an investigation of non-uniform time sampling methods for spectral/temporal feature extraction in speech. Frame-based features were computed based on an encoding of the global spectral shape using a Discrete Cosine Transform. In most current “standard” methods, trajectory (dynamic) features are determined from frame-based parameters using a fixed time sampling, i.e., fixed block length and fixed block spacing. In this research, new methods are proposed and investigated in which block length and/or block spacing are variable. The idea was initially tested with HMM-based isolated word recognition, and a significant performance improvement resulted when a variable block length and …

A Study To Determine Why Some Women Age Fifty And Over Choose Not To Have Frequent Papanicolaou Tests, Dorothy Hicks-Burchwell

Masters Theses

This discriptive study used the Health Belief Model to examine the benefits, barriers, and action cues to obtaining Papanicolaou tests perceived by women age 50 and older. A convenience sample of 48 women were interviewed. Comparisons were made between those who obtained Papanicolaou tests at least every three years (n = 24) and those who did not (n = 24)..

One cue to action and four perceived benefits were found to be important influences. Women who had received Papanicolaou tests less frequently than every three years agreed that certain barriers had influenced their decisions more than women who had received …

Qualitative Evaluation Of Data Compression In Real-Time Ultrasound Imaging, Bijoy J. Sundersingh

Theses and Dissertations (ETD)

The purpose of this project was to evaluate qualitatively real-time ultrasound imaging using objective and subjective techniques to determine the minimum bandwidth required for clinical diagnosis of various anatomical and pathological states. In the experimental setup live ultrasound video samples representing the most common clinical examinations were compressed at 128, 256, 384, 768, 1152 and 1536 kbps using a compressor-decompressor (CODEC) adhering to International Telecommunication Union (ITU-T) recommendation H.261. A protocol for qualitative evaluation was developed and subjective and objective testing were performed based on this protocol. Subjective methods comprised of inter-rater reliability tests using kappa statistics and three way …

Functional Significance Of The Upregulation Of Adhesion Molecules On Irradiated Endothelial Cells, Balabhaskar Prabhakarpandian

Theses and Dissertations (ETD)

Ionizing radiation is a major therapy for cancer. Damage to the endothelium and upregulation of inflammatory responses are major side effects of radiotherapy, but the mechanisms behind these processes are not clear. A key component of the inflammatory response is leukocytes adhesion to the endothelium in a multi-step process involving leukocyte tethering to the endothelium, followed by rolling, firm adhesion/spreading and extravasation. Adhesion molecules mediate this process, particularly, E-selectin and ICAM-1, which are inducible adhesion molecules. E-selectin is involved in the initial tethering and rolling steps of the adhesion cascade while ICAM-1 appears to be involved in the latter steps. …

Spanish-Speaking Parents’ Attitudes Toward Explanations Of Anesthetic Techniques, Melba Zuniga Mayes

Loma Linda University Electronic Theses, Dissertations & Projects

PURPOSE Little attention has been given to the issue of obtaining informed consent for conscious sedation and general anesthesia from Spanish-speaking parents living in the United States. The treatment of pediatric dental patients can only be as effective as the extent to which Spanish-speaking parents consent to the dental treatment. The purpose of this study was to identify valuable information that dentists can utilize to obtain an informed consent for conscious sedation and general anesthesia from Spanish-speaking parents.

METHOD Each Spanish-speaking parent in the sample was given one of the following explanations regarding an anesthetic technique: 1) verbal presentation for …

Therapist Factors As Predictors Of The Experience Of Memory Recovery In Psychotherapy, Tami Lorraine Young

Loma Linda University Electronic Theses, Dissertations & Projects

Psychotherapist factors as predictors of client memory recovery of childhood sexual abuse following a period of amnesia were investigated. Marriage and family therapists and clinical psychologists in California were surveyed regarding the degree of research emphasis in academic training, knowledge of memory processes and professional standards of care regarding memory recovery in psychotherapy, degree of ambiguity tolerance, use of memory recovery techniques and client memory recovery. Therapists with greater research emphasis in academic training reported having fewer clients with memory recovery. Also, therapists who were intolerant of ambiguity used memory recovery techniques more than did therapists who were tolerant. Finally, …

Expression And Requirement Of Epithelial Fatty Acid- Binding Protein In Neuronal Axon Growth, Gregory William Allen

Loma Linda University Electronic Theses, Dissertations & Projects

Epithelial fatty acid-binding protein (E-FABP) is expressed in the dorsal root ganglia following sciatic nerve injury and in migrating and differentiating neurons during neuronal development. It was hypothesized that E-FABP expression is required for the robust outgrowth of axons from developing and regenerating neurons. To test this hypothesis, E-FABP expression in both PC12 cells and primary retinal neurons was examined. In PC12 cells, NGF induces E-FABP mRNA and protein during the period of neurite outgrowth, and E-FABP localizes to the perinuclear cytoplasm, nucleus, and growth cone. Furthermore, E-FABP-deficient cell lines exposed to NGF were less differentiated and had shorter neurites …

Identification And Characterization Of Control Elements Within The Murine Cd4 Gene, Zhong Deng

Loma Linda University Electronic Theses, Dissertations & Projects

The control of CD4 gene expression is essential for T lymphocyte development. Since the molecular mechanism for the control of CD4 gene expression during T cell development had not been elucidated, a study of the factors that control CD4 gene expression may lead to further. Toward these goals, we have made a series of recombinant DNA constructs to define the cis-acting transcriptional control elements in the murine CD4 locus that control CD4 gene expression during T cell development. In this study, we have identified multiple cis-acting control elements, which are critical for regulating the expression of the murine …

Effects Of Pycnogenol On Microsomal Cytochrome P450 Activity And Apoptosis, Huong Thu Huynh

Loma Linda University Electronic Theses, Dissertations & Projects

Phytochemicals are naturally-occurring compounds found in plants, many of which are consumed as nutritional supplements by humans. Pycnogenol is a mixture of flavonoid compounds extracted from bark of pine trees (Pinus maritima) and is commercially available in several different pharmaceutical preparations as a free radical scavenger.

Since few scientific studies have documented the pharmacologic effects of pycnogenol, our objective was to characterize the biological activity of pycnogenol. One study looked at the effects of pycnogenol on the three pathways of NNK metabolism: NNK reduction, N-oxidation and a-hydroxylation. NNK is a lung carcinogen. Lung and liver microsomes from 6 mo and …

Anti-Inflammatory Agents And The Modulation Of Replacement Root Resorption, Geoffrey Toshio Okada

Loma Linda University Electronic Theses, Dissertations & Projects

Replacement resorption (RR) occurs following severe injury to the periodontal ligament (PDL). It has been suggested that inflammatory reactions precede RR. The purpose of this study was to examine and compare histologically the effect of topical application of two anti-inflammatory medications and stannous fluoride (SF) on the development of RR. Thirty-four roots of beagle dog mandibular 2nd, 3rd, and 4th premolars received root canal therapy. They were then extracted and left to bench dry for one hour. Following removal of their PDLs, they were soaked for five minutes in either 10 µg/ml ketorolac (n=10), 16 µg/ml of dexamethasone (n=10), or …

An In Vitro Study Of The Durability Of A Proprietary Decalcification Inhibiting Sealant, Michaela Camille Neagu

Loma Linda University Electronic Theses, Dissertations & Projects

Plaque accumulation, although undesirable, is prevalent in orthodontic patients with poor oral hygiene and is linked with enamel decalcification. A proposed product designed to seal the tooth around the orthodontic bracket was tested for its durability. It also was evaluated for its ability to seal the enamel.

We measured prepared areas of sixty bovine teeth that were divided equally into two groups: a control group, protected with light-cured Concise sealant, and a group treated with the test sealant, Odyssey, both by 3M Unitek. The teeth were thermocycled for 1000 cycles in alternating 5° C and 55° C waterbaths at 10-second …

Locus Of Control, Coping, And Anticipatory Nausea In Women With Breast Cancer, Melinda L. Nielsen

Loma Linda University Electronic Theses, Dissertations & Projects

Many cancer patients experience adverse chemotherapy-related side effects. The present study examined whether the perception that one can control and effectively cope with her treatment for breast cancer mitigate against any nausea and vomiting that she may experience in anticipation of chemotherapy treatments. Seventy-five women with breast cancer completed the Multidimensional Health Locus of Control Scale - Form C, the Krantz Health Opinion Survey, the Ways of Coping Scale - Revised, and the Morrow Assessment of Nausea and Emesis. As hypothesized, internal health locus of control was significantly positively related to positive reappraisal coping strategies. This relationship was moderated by …

A Comparison Of Four Curing Lights For Bonding Of Orthodontic Brackets, David Sy Nguyen

Loma Linda University Electronic Theses, Dissertations & Projects

Light cured adhesives have gained more popularity since their introduction more than three decades ago. Photo-polymerization allows more thorough curing on demand and thus facilitates better control of bracket placement. With new technologies, recently developed curing lights promise even more improvement. These systems are not only more sophisticated, but also more sensitive to the types of resins and clinical application. Specific comparison studies of the new systems in the orthodontic bonding are lacking because most of curing lights are originally designed for general dentistry.

This study evaluated the in-vitro ability of four curing lights to polymerize the Transbond XT bonding …

Comparison Of Elderly Non-Fallers And Fallers On Performance Measures Of Functional Reach, Sensory Organizations, And Limits Of Stability, Harvey W. Wallmann

Loma Linda University Electronic Theses, Dissertations & Projects

OBJECTIVE: The purpose of this study was to compare elderly non-fallers and fallers for differences in the following: (1) mean functional reach (FR), (2) mean anterior limits of stability (LOS), (3) mean posterior LOS, and (4) mean sensory organization test (SOT) composite score. The following correlations were tested for significance separately in the sample of non-fallers and the sample of fallers: (1) FR and anterior LOS, (2) FR and posterior LOS, (3) FR and SOT composite score, (4) anterior LOS and the SOT composite score, and (5) posterior LOS and the SOT composite score.

DESIGN: Two group comparison design.

SETTING: …

Orthognathic Surgery In The Juvenile Rheumatoid Arthritic Patient, David H. Gilbert

Loma Linda University Electronic Theses, Dissertations & Projects

This thesis attempts to use a retrospective evidenced base review of a series of five patients afflicted with juvenile rheumatoid arthritis and its inherent dento-facial deformity as a basis for establishing a proposal for a surgical protocol.

A review of pertinent and current literature is performed in describing the disease process as it relates to epidemiology, histopathophysiology, immunology, and clinical presentation. General treatment options are reviewed for the acutely and chronically afflicted patients as well as specific approaches to dento-facial reconstruction.

The studies reviews a series of five female patients who were evaluated and treated by the same surgeon at …

An Evaluation Of The Short And Long Term Effects Of Quad Helix Expansion, Sonja F. Finnie

Loma Linda University Electronic Theses, Dissertations & Projects

This study was conducted to examine, retrospectively, orthodontic and orthopedic changes resulting from quad helix expansion therapy in mixed and permanent dentition stages. Twenty-one subjects with an average age of 10.2 years who experienced an expansion of at least 3 mm with the quad helix appliance were selected for this study. The subjects were evaluated according to facial type and age for both short and long-term stability. Plaster dental casts and posteroanterior (frontal) radiographs were evaluated at the beginning of treatment (T1), at the completion of Phase 1 or full treatment (T2), and approximately two years following the completion of …

Failure Mode Of An Orthodontic Resin Alone And With Bonded Brackets, Marc Cody Dunn

Loma Linda University Electronic Theses, Dissertations & Projects

Since the introduction of bonded orthodontic brackets in the early 1960's spontaneous debonding has been a constant nemesis. Most attempts to avoid this problem by orthodontic manufactures have focused on "bond strength" issue. Whether they chose to address the materials, the bracket base or both, the common method used to evaluate improvements entailed the use of just one testing apparatus: a static universal testing machine such as the Instron.

Metal, ceramic and plastic bonded brackets were tested with the traditional shear/peel method as well as a new high strain rate impact test. The resin itself was also evaluated for physical …

An Extension Of Euclidean Distance Matrix Analysis Applied To Craniofacial Growth Prediction, Mark K. Batesole

Loma Linda University Electronic Theses, Dissertations & Projects

This study is [sic] introduces a new extension of Euclidean Distance Matrix Analysis (EDMA) as applied to growth prediction analysis. Using EDMA eliminates the presupposition of a set growth pattern, which is introduced by traditional superimposition techniques. When EDMA is extended to analyze prediction methodologies, using a non-age-matched growth sample, some shortcomings become evident. These involve bootstrapping techniques, relative difference in growth, and absence of clinical, real world measure. To overcome these issues, a statistical approach using the Wilcoxen signed rank test, absolute difference in growth, and a new method to evaluate the error in a prediction methodology's landmark identification …

Locus Of Control, Coping, And Anticipatory Nausea In Women With Breast Cancer, Melinda L. Nielsen

Loma Linda University Electronic Theses, Dissertations & Projects

Many cancer patients experience adverse chemotherapy-related side effects. The present study examined whether the perception that one can control and effectively cope with her treatment for breast cancer mitigate against any nausea and vomiting that she may experience in anticipation of chemotherapy treatments. Seventy-five women with breast cancer completed the Multidimensional Health Locus of Control Scale - Form C, the Krantz Health Opinion Survey, the Ways of Coping Scale - Revised, and the Morrow Assessment of Nausea and Emesis. As hypothesized, internal health locus of control was significantly positively related to positive reappraisal coping strategies. This relationship was moderated by …

Post-Treatment Evaluation Of Isometric Function Of The Elevator Muscles, Margaret Barbara Kowalczyk

Loma Linda University Electronic Theses, Dissertations & Projects

This study mainly examined neuromuscular function, occlusal index, and centric relation-centric occlusion (CR-CO) discrepancy of 23 orthodontically treated patients. Phase I, craniofacial anomalous, and orthognathnic surgery cases were excluded from the study. Record taking was done in 2 sessions: (1) at the time of deband and (2) 3-4 months later. Records taken at each session included facial and intraoral photographs, impressions, CR wax bites, a facebow, and surface EMG (sEMG) recordings.

For the sEMG recordings, electrodes were placed on the upper hyoid, masseter, and anterior temporalis muscles. Subjects were asked to perform numerous tests; these included baseline, clenching to test …

Whose Turn Is It Anyway : The Impact Of Job Rotation On The Reduction Of Cumulative Trauma Disorders, Francesco Dimiceli Jr.

Theses

In today's fast-paced world, repetitive activity on the job has become very demanding. Many workers are suffering from injuries known as cumulative trauma disorders (CTDs). Job rotation can be an effective and powerful tool when seeking to minimize CTDs by allowing workers to experience different activities, thereby distributing the physical demands on the workers' bodies.

A case study was conducted on a northwestern New York manufacturing facility to identify the presence of excessive work stressors and to formulate potential corrective actions, including an analysis of their current job rotation system. The jobs were evaluated using the Rapid Upper Limb Assessment. …

The Relationship Between Companion Animals And Health Status Among Older Adults Living In The Community, Agnes M. Eytchison

Master's Projects

A study was conducted on 18 older adult pet owners and non-pet owners residing in a mobile home park to determine self-perception of health status and the level of attachment to pets. Self-reported health status was high and equal for both pet owners and non-pet owners. The level of attachment to the pets was also high. Studies have demonstrated human-animal interactions being beneficial to both individuals and families; but for many residents of mobile home parks and common interest developments, such as condominiums and townhouses, rules prevent companion animal ownership. Family Nurse Practitioners (FNPs) aware of the benefits of animal …

Construction And Testing Of A Marital/Couple Therapy Satisfaction Measure, Jesse Bingham

Open Access Theses

Therapy is inundated with self-report instruments/measures for clients (Corcoran & Fischer, 1987)(Touliatos, Perlmutter, & Straus, 1989); most of them focused for individual therapy. Many of these instruments are used for assessment purposes, while some others are related to outcome (Fredman & Sherman, 1987) (Corcoran & Fischer, 1987). One neglected area is that of instruments devised to measure satisfaction with specific content areas oftherapy. Another neglected area is an instrument designed specifically for marital/couple therapy. This research devised and tested a client self-report satisfaction measure specifically for couples in therapy. The items of the Marital Therapy Satisfaction Measure (MTSM) were derived …

Evaluation Of The Effectiveness Of A Urinary Continence Program With Urinary Incontinent Rehabilitation Patients, Pat Emmons

Master's Projects

This study used a quasi-experimental design to evaluate the outcomes of a continence program in a rehabilitation center with patients receiving therapies (N=l2) and to evaluate the knowledge and attitudes of the rehabilitation staff (N=27) before and after reviewing a teaching module about urinary incontinence. Roy's adaptation theory was used as the conceptual framework for this research project. The tools used for data collection were: the Functional Independence Measure {FIM), daily 24 hour incontinence logs, pre/post true and false knowledge tests and pre/post staff attitude questionnaires. Eleven of the 12 patients admitted to the program had improved FIM scores and …

A Comparison Of Perceived Nurse Practitioner Practice Barriers, Katherine Kinner

Master's Projects

Novice nurse practitioners (NP) face unique obstacles to practice. Few studies examine factors influencing early NP clinical performance. Therefore, this research project analyzed data obtained from 243 members of an NP professional organization, who were asked to identify barriers encountered within the first 3 years of practice. Responses were received from beginning and more experienced NPs. The top 3 barriers named were lack of public knowledge, lack of positions for NPs, and a lower salary than anticipated. The promotion of NP assets through expanded media coverage and individual educational efforts, the national standardization of the role, and the elimination of …

Evaluation Of The Effectiveness Of The "Youth Leadership" Class In The Prevention Of Adolescent Depression, Jacqueline Oria

Master's Projects

Depression in adolescence is a common and potentially life-threatening health problem. Depending upon the severity of symptoms, anywhere from 2% to 40% of teenagers are affected with depression (Sadler, 1993). The purpose of this study is to evaluate the effects of prevention strategies on decreasing the rate of depression in adolescents. It is hoped that a class addressing specific skills identified as having an impact on adolescent depression will affect the youth participating in the program.

Nurse Practitioners' Attitudes And Knowledge Toward Cpt Coding, Tanya Lee Sa

Master's Projects

This survey of nurse practitioners (NPs) determined their knowledge and attitudes regarding Current Procedural Terminology (CPT) codes. Overall, NPs lacked the requisite knowledge and did not perceive the significance of this essential reimbursement strategy.

Culture Of Origin And Illness Attribution: The Implications Of Cross-Cultural Awareness For Health Care Professionals, Eri Matsumoto-Lyons

Master's Projects

People from different cultural backgrounds have different beliefs and perceptions concerning health and illness. Differing illness beliefs between health professionals and patients may result in conflicting expectations regarding treatment choice and outcome. This non-experimental research was designed to explore illness attribution among Caucasian, Hispanics, and Asians with chronic or acute illness. The results suggest that there was no significant difference in illness attribution beliefs between the three ethnic groups; however, primary language, years spent in U.S., and educational backgrounds were associated with differences in illness attribution. Health care providers must think of culture in a broader spectrum than just race …

Evaluation Of The Effectiveness Of A Teaching Program On The Care Provided To Jewish Clients, Ilana Cood Withop

Master's Projects

The purpose of this qualitative evaluation study was to determine how an educational program provided to nursing students changed their perceptions of the care they provided to Jewish clients. A teaching program on Jewish beliefs and culture was given to ten baccalaureate nursing students who were providing care to Jewish older adults through one of the university's Academic Nurse Managed Centers. The teaching program was given early in the semester and students were interviewed four and eight weeks later to determine how the teaching program influenced their interactions with clients. Three major themes emerged from the interview data: a) increased …