Medicine and Health Sciences Commons^™

Distribution And Proportion Of Immunoreactive Neuron Specific Enoclase Containing Cells In The Rat Pineal Gland, Alfonso Miranda C.

Loma Linda University Electronic Theses, Dissertations & Projects

The distribution and proportion of cytoplasm containing immunoreactive neuron specific enolase (NSE) in the rat pineal have been investigated. Step serial sections of the pineal glands of 7 male Sprague-Dawley rats were stained for NSE using an indirect immunoperoxidase method. The volumes of the pineals and of the regions containing reactive cells were derived from the distance between sections and the sum of the corresponding sectional areas of camera lucida drawings. The proportion of the NSE areas actually consisting of NSE reactive cytoplasm was measured using an image array processor.

Cytoplasm reactive for NSE was consistently localized to the posterior …

Autoregulation Of Cortical Blood Flow In Response To Phenylephrine Induced Hypertension In The Normocapnic And Hypercapnic Cat, Forrest Ritland

Loma Linda University Electronic Theses, Dissertations & Projects

The purpose of this research was to determine the degree of autoregulation of cortical blood flow in the cat, and to evaluate the usefulness of the heated thermocouple technique for measurement of local cortical blood flow. We determined the relationship between local flow and voltage output from our thermoelectric flow probe by in vitro experiments with an artificial kidney. We measured local cortical blood flow in 17 cats during episodes of phenylephrine-induced hypertension, under conditions of normocapnia and, in some cases, hypercapnia. Arterial blood pressure and voltage output from the flow probe thermocouples were recorded continuously with a Physiograph-six monitor. …

An Evaluation Of 17-4 Precipitation-Hardenable Stainless Steel Alloy For Use As An Orthodontic Wire, Martin G. Martz

Loma Linda University Electronic Theses, Dissertations & Projects

17-4 precipitation-hardenable stainless steel, a high strength alloy developed for aircraft applications, has been examined for possible use in orthodontics. The effects of solution treatment, various refrigeration treatments, and various aging treatments on standard tensile properties were measured. Comparisons were made with the tensile properties of 18-8 stainless steel and a Co-Cr alloy presently used in orthodontics.

Solution treatment was found to decrease ultimate strength by 37.8%, 0.2% yield strength by 45.9%, and (YS)/E ratio by 36.7%, while having almost no effect on elastic modulus or percentage elongation. Refrigeration treatments had statistically significant but small effects on tensile properties. Aging …

Cost-Benefit Analysis Of Computer Systems In Community Hospital Food Service, Beverly Kittle

Loma Linda University Electronic Theses, Dissertations & Projects

Cost containment has always been a major concern to managers. Therefore, any system which decreases costs by reducing labor time is given serious evaluation.

A five week comparison was made between financial record keeping by the manual method and by the computerized method. A continuous time study was utilized to make this comparison.

Over the five weeks, an average overall time savings of 245 minutes for the computerized versus the manual method was observed. The net savings to the institution was 223 minutes per week which translates to approximately $140.00 per month over a 5 year period.

The rapid payback …

The Zinc Status Of Pregnant Vegetarian Women, Michelle J. Abu-Assal

Loma Linda University Electronic Theses, Dissertations & Projects

The zinc status of twelve lacto-ovo-vegetariah pregnant women and seventeen non-vegetarian pregnant women was evaluated. Zinc intakes were calculated from three-day dietary records and twenty-four hour dietary histories. Plasma zinc levels were drawn during the last trimester of pregnancy and approximately ten weeks postpartum. Gestational age at birth, birthweight, and APGAR scores of the infants born were obtained from the medical charts. Dietary zinc intakes for the vegetarians (10.5 ± 4.0 mg) did not differ significantly from the intakes of the non-vegetarians (10.9 ± 3.0 mg). The vegetarian last trimester plasma zinc levels (47.9 ± 12.4 mcg/dl) and postpartum plasma …

Implementing Augmentative Communication For Aphasic Patients In Convalescent Facilities, Susan H. Mcgann

Loma Linda University Electronic Theses, Dissertations & Projects

A one-hour Blissymbol in-service training program was developed for presentation to staff members of a skilled nursing facility. The purpose was to determine whether the program would produce significant learning to justify its use in similar facilities to bridge the communication gap between nonspeaking/nonwriting aphasic patients who communicate with Blissymbols and their direct care personnel as well as family members and others who are significant in their lives.

After development, the in-service program was given two "dry-runs" in skilled nursing facilities similar to the "study facility". It was then revised to improve clarity and to make it fit within time …

Dynamic In-Patient Therapy: A Team Approach, Le Van Cao

Loma Linda University Electronic Theses, Dissertations & Projects

The paper reports on the philosophy and clinical results of an individualized but concentrated team approach to hospitalized patients undergoing a psychological crisis. The team focuses on the patient’s key vital coping technique as the source of his vulnerability and assists the patient toward constructive self-understanding. The approach favors maximum therapeutic benefit from a short hospital stay. Follow-up of the first fifteen cases managed by this method discloses a significantly low percentage of relapse and rehospitalization, and demonstrates that even such relapses can be turned to therapeutic benefit.

Mandibular Repositioning With Frankel Appliance Therapy, Clark E. Schneekluth

Loma Linda University Electronic Theses, Dissertations & Projects

A sample of twelve Frankel appliance (FR-2) treated patients, in the mixed dentition stage, were selectively chosen by an orthodontist based on the Class II correction and evaluated from before treatment and end of treatment laminagraphic and lateral cephalometric radiographs. The average treatment period was 22 months (1 yr. 10 mos.). The average pre-treatment age was 9.5 years with a range from 8 to 11 years old, while the average post-treatment age was 11.3 years with a range of 10 to 13 years.

Frankel appliance therapy was the only form of mechanics used in this study.

The before treatment lateral …

Age-Changes Of The Neuronal Component Of Meissner Corpuscles In The Mouse Digital Pad, Roger C. Mathewson

Loma Linda University Electronic Theses, Dissertations & Projects

Silver impregnated sections of mouse digital pads were studied using light microscopy to detect age-related changes of the neuronal component of Meissner corpuscles. Direct microscopic observation, photomicrographs and camera lucida tracing were utilized. From qualitative observation, the corpuscular neurites were found to undergo morphological age-related changes of diameter, tortuosity, varicosity, branching and terminal expansion size. Quantitative examination was made of the number of corpuscles, corpuscular neurites, branching neurites, cross-innervations, terminal neurite expansions, neurite intraepidermal continuations and terminal axonal processes. The number of corpuscles and neurite intraepidermal continuations decreased with age while having significant linear correlation; whereas, branching increased with age …

Development Of A Mathematical Model Of Renal Function For Clinical Application, Barbara A. Holshouser

Loma Linda University Electronic Theses, Dissertations & Projects

This model describes the orthoiodohippurate (OIH) distribution and clearance in the renovascular system. The model is described by five compartments: the blood, left and right kidneys, bladder and the red blood cell compartment. Data for these compartments, except the RBC compartment, are collected with scintillation detectors monitoring OIH tagged with 1-131 as the radiopharmaceutical passes through each compartment. Time/ activity curves are plotted for the data and used as inputs to the model parameter estimation routine. The compartments are described by a set of first order ordinary differential equations solved using the Adam's methods. For parameter estimation, an iterative predictor-corrector …

The Copper Status Of Vegetarian And Non-Vegetarian Men, Susan Bruce

Loma Linda University Electronic Theses, Dissertations & Projects

In this study, the copper status of 18 vegetarian and 17 non-vegetarian men were compared. Copper status was assessed by determining red blood cell superoxide dismutase (RBC-SOD) activity and plasma copper. Plasma copper levels were measured by atomic absorption spectroscopy. Plasma cholesterol, triacyclglycerols, HDL cholesterol, LDL cholesterol VLDL cholesterol were also determined. Twenty-four hour recalls and three-day food records were obtained to determine copper, zinc, energy, protein, fat, fiber, saturated fat, oleic acid, linoleic acid and cholesterol intake. Non-vegetarians had a significantly higher plasma cholesterol and LDL cholesterol than vegetarians. They also had a significantly higher cholesterol, saturated fat, percent …

Effects Of Stress Relief To Decrease Force Loss In Retraction Springs, Richard Earl Dunn

Loma Linda University Electronic Theses, Dissertations & Projects

Orthodontic wire may be heat treated to relieve residual stresses resulting from the formation of bent configurations. This study utilized electronic equipment to detect and record the initial amount of activation force, and the amount of force lost due to the intrinsic properties of the wire. The information was gathered at three hour intervals over fifteen one-week periods. The data were statistically analyzed by a computer to deter mine means and standard deviations. A general linear hypothesis was utilized to test covariants and the main effects.

A total of forty-eight wires were tested. Closed he lix retraction springs fabricated from …

Signs And Symptoms Of Infection In Newborn Infants With And Without Sibling Visits, Marilyn Thunquest

Loma Linda University Electronic Theses, Dissertations & Projects

[No Abstract Included]

Orthodontic Information Systems : A Developmental Study, Gary D. Sheldon

Loma Linda University Electronic Theses, Dissertations & Projects

The intent of this study was to design and implement a computer-based orthodontic system providing an integrated information environment throughout the entire patient treatment process.

Total system integration was achieved by restructuring the entire information gathering process. A complete, evaluation of patient diagnosis and treatment evaluation procedures established five major information categories and a critical information list for proper patient management. Information organization was outlined to provide a logical progression in the information gathering process and patient chart forms were designed to implement this. Defining the computer system's performance identified three functions as follows: 1) entry and editing of individual …

A Comparison Of Three Approaches And The Effect On Observable Maternal Behaviors In Adolescent-Infant Bonding, Joreen Buttner

Loma Linda University Electronic Theses, Dissertations & Projects

[Abstract Not Included]

A Comparison Of Level Of Knowledge In Communicative Disorders Between Senior Medical Students And Senior Speech-Language Pathology Students, Cynthia R. Huffman

Loma Linda University Electronic Theses, Dissertations & Projects

In California, physicians are required to "refer and prescribe the extent and duration of hearing, speech and equilibratory services for their patients who are beneficiaries of the state's Medicaid program (Title 22, Division 3 and 4 of the Medi-Cal Utilization Controls #51096). The present study was designed to determine whether senior medical students have knowledge in all areas of Communicative Disorders which is equal to or better than that of the senior speech-language pathology students to whom they will "prescribe" when they enter professional practice.

The study was conducted with the cooperation of students from the Loma Linda University School …

Conformational Analysis Of Nonsteroidal Estrogen Analogs, Robert N. Spady

Loma Linda University Electronic Theses, Dissertations & Projects

In target tissue, estrogens initiate a series of events, ending in protein synthesis, by binding to a cytoplasmic receptor. Once the estrogen binds, the receptor complex is activated--a process including dimerization of the estrogen complex with another subunit. In order to study the possible receptor-ligand interactions, conformational analysis was performed on several nonsteroidal estrogen analogs, using the CAMSEQ8 molecular mechanics program.

The probability that a molecule will exist in a given conformational energy well depends both on the energy and the shape of the well. A method has been previously worked out to calculate probabilities using both of these variables, …

A Correlation Of Subjective Ranking Of Facial Esthetics And The Golden Section Analysis, Timothy Robin York

Loma Linda University Electronic Theses, Dissertations & Projects

The objective of this study was to determine if faces which fit the golden sections as proposed by Ricketts were considered more esthetic to the layman than faces which did not fit the golden sections as well.

Frontal facial photographs of 92 individuals from the normal occlusion sample of Andrews were measured for facial proportions according to Ricketts application of the golden section. Seven facial proportions were computed from the photographs. Ten photographs were selected, five of males and five of females, representing a range of mean percent deviation from the golden section proportion (1.618). Randomly arranged sets of these …