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In Vitro And In Vivo Replication For Scanning Electron Microscopy Of The Cervical Region Of Human Teeth, Joan Bevenius, Kjell Hultenby

Scanning Microscopy

A replica technique for scanning electron microscopy (SEM) of the cervical region of human teeth was evaluated on extracted premolar teeth by comparing the replicas and the original specimens in the SEM. For in vivo application, the technique was modified to circumvent contamination by saliva and gingival exudate. Impressions were taken with an addition silicone polyvinylsiloxane material and the replicas were poured in epoxy resin die material. A surface active dentine conditioner facilitated flow of the impression material into irregular surface areas; in vivo a scavenger impression was used to remove surface debris. Custom trays were made of light-cured acrylic …

Localisation Of Putative Mechanoelectrical Transducer Channels In Cochlear Hair Cells By Immunoelectron Microscopy, Carole M. Hackney, David N. Furness, Dale J. Benos

Scanning Microscopy

Displacement of the apical stereociliary bundle of cochlear hair cells mechanically gates transducer channels. Knowing the position of the channels with regard to the apical structures of the hair cell could indicate how this mechanism operates. At present, there is conflicting evidence regarding their precise location; the channels have been suggested to be located either towards the base of the stereocilia or at the tips where they could be operated by extracellular links running from the top of shorter stereocilia to the sides of adjacent taller ones. The channels have been shown to be reversibly blocked by amiloride. This has …

The Role Of Tamm-Horsfall Glycoprotein And Nephrocalcin In Calcium Oxalate Monohydrate Crystallization Processes, B. Hess

Scanning Microscopy

Theoretical considerations as well as clinical observations suggest that the aggregation of nucleated crystals is the most dangerous step in the formation of calcium oxalate (CaOx) renal stones. The effects of 2 major urinary glycoproteins, Tamm-Horsfall glycoprotein (THP) and Nephrocalcin (NC), on calcium oxalate monohydrate (COM) crystal aggregation in vitro are studied. At low ionic strength (IS) and high pH (within urinary limits), THP is a powerful crystal aggregation inhibitor (90% inhibition at 40 mg/l). Decreasing pH to 5.7 and raising IS to 0.21 increases THP viscosity, thereby lowering THP crystal aggregation inhibition. Upon addition of calcium …

Prerequisites Of High Resolution Scanning Electron Microscopy, René Hermann, Martin Müller

Scanning Microscopy

Cryotechniques must be employed throughout all preparation and observation steps in order to extract high resolution scanning electron microscopical information from biological material.

Cryoimmobilization, followed by freeze-drying and metal-shadowing at low temperature, yields optimal structural information of T4 polyheads used as a test specimen. Freeze-substitution of frozen T4 polyheads and subsequent freeze-drying renders the substructures recognizable but less crisp than freeze-drying from aequous solutions. Critical point drying of ethanol dehydrated chemically fixed, or freeze-substituted test specimens results in complete loss of discrete polyhead structure.

In-lens field-emission scanning electron microscopes and highly sensitive electron detectors are instrumental prerequisites in achieving transmission …

Observations Of Short Period Mesospheric Wave Patterns: In Situ Or Tropospheric Wave Generation, Michael J. Taylor, R. Edwards

All Physics Faculty Publications

Near infrared images showing wave structure in the hydroxyl (OH) nightglow emission have been obtained from Maui, Hawaii during the ALOHA‐90 campaign. Analysis of two nights during this campaign (25 and 31 March) indicate extensive, highly coherent, linear wave patterns of very short apparent period (∼5 and 10 min respectively). Both displays exhibited several features characteristic of the in situ breakdown of a large scale, long period, upper atmospheric wave disturbance. Data in support of this mechanism was found by other ALOHA instruments which detected concurrent long period (1–2 hour) mesospheric wave disturbances on both occasions. However, a tropospheric source …

Cross Cultural Understanding Through Language, Shaun Bradley Roundy

Undergraduate Honors Capstone Projects

Much has been done to discover the place that language holds in the development of our communication and thought patterns. The methods through which members of various societies learn different attitudes and how their respective languages reflect and reinforce such patterns have also been studied in some depth with a number of world cultures. The interpersonal barriers and misunderstandings brought about by the dissimilarities between unconscious but powerful forces that culture has upon our thinking are understandably difficult to discern and thereby surmount. In this paper, I will demonstrate how the chances of achieving this aim may be enhanced through …

Japan's Manchukuo Economic Development Or Militaristic Seizure, Nathan Douglas Alder

Undergraduate Honors Capstone Projects

Was the founding of the State of Manchukuo an act of independence brought about by the people of Manchuria or a planned take-over by the Japanese military and government? Was Manchukuo a favored trading nation of Japan or just another province in an expanding Japanese empire? Answers to these questions are the motivation for this paper, and aim at the heart of Manchukuo's history.

Utah State University Commencement, 1991 – Main Campus, Utah State University

Commencement Programs

Ninety-Eighth Annual Commencement of Utah State University

Immunocytochemical And Histopathological Investigation Of The Hypothalamic-Pituitary-Testicular Axis Of The Primary Infertile Dark Mink (Mustela Vison), Baha M. Alak

Biology

This study was designed to investigate the hypothalamic-pituitary-testicular axis of the primary infertile dark male mink. The specific objectives were (1) to describe the morphology and localization of the neurons containing gonadotropin-releasing hormone (GnRH) and its precursor (proGnRH) within the preoptic-basal hypothalamus (POA-BH) of the sexually mature dark male mink, (2) to ascertain any differences in the number or the distribution of GnRH- and proGnRH-containing neurons between the fertile and infertile dark male mink, (3) to determine if GnRH and proGnRH are produced in insufficient amounts by the hypothalami of primary infertile dark male mink, and (4) to describe the …

Valuing Diversity In Business, Kimberly Nalder

Undergraduate Honors Capstone Projects

The purpose of this project was to create, plan, and implement an original instructional module on the topic of valuing diversity in business. My areas of emphasis were gender, sex role issues, and communication.

My responsibilities included: coordination with the instructor in all stages of planning and implementation; researching appropriate learning models for such a course; identifying topics of greatest significance within diversity; preparing and presenting one complete day of instruction; adapting cases and worksheets for both the course introduction and the gender issues/ communication sections; conducting personal interviews with appropriate resource individuals; creating an original group project; arranging for …

Predictors Of Change For Parents Who Perceive Improvement In Their Family Functioning Following A Parent-Training Program, Linda Gayle Moore

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The purpose of the present study was to determine if perceptions of improved family functioning following a behavioral parenting program could be predicted by educational background, income, and pretest knowledge of behavioral principles. Subjects for the study were parents of elementary-school-aged children who volunteered for the parenting classes. Parents who perceived their families as dysfunctional, as measured by the pretest FACES II, were selected as subjects for the study. Parents whose perceptions of their families improved after the parenting class were then compared with parents who did not perceive improvement in their families on the predictor variables.

The results demonstrated …

Using Direct Instruction To Teach Compliance To Seriously Noncompliant Students, Hans M. Michielsen

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

This research study investigated the effectiveness of a direct instruction program (Treatment 2) for increasing compliance with teachers' instructions in students for whom manipulation of conventional antecedent stimuli and consequences (Treatment 1) had not resulted in adequate compliance. Five students participated in this study. A multiple baseline design across participants was used to evaluate treatment effectiveness. Introduction of Treatment 2 was followed by an increase in compliance by all five participants. The relationship between compliance and other appropriate classroom behaviors, as well as the relationship between compliance and qualitatively good and qualitatively poor instructions, was also investigated. Those relationships were …

Factors Affecting Moisture Distribution In 290-Kilogram Stirred-Curd Cheddar Cheese Blocks, Robert S. Reinbold

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The purpose of this dissertation was to study factors affecting moisture distribution in 290-kilogram stirred-curd Cheddar cheese blocks cooled in stainless steel hoops. Uneven moisture distribution within blocks may create cheese with variable texture and flavor, which can be extremely costly to the producer. The effects of temperature, pH, and vacuum treatment on moisture distribution were investigated. Temperature, pH, moisture, and pressure profiles were presented. Also, comparisons were made between temperature profiles of 290- kilogram stirred-curd Cheddar cheese blocks cooled in stainless steel and in plywood hoops, as well as between temperature profiles of 66-kilogram Swiss cheese blocks cooled in …

A Descriptive Study Of The Use Of An Education-Sponsored Suicide Riskline, R. Kelly Haws

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The purpose of this study is to provide a descriptive evaluation of Jordan School District's riskline as a step toward assessing the effectiveness of education - sponsored suicide risklines. The riskline received over 1000 calls from mid 1988 to mid 1989 for a variety of problem areas. Demographics and risk assessment for the calls relating to suicide are presented and evaluated. The findings indicate that risk assessment is independent of all variables considered except the age of the counselor and the grade of the caller. The number of calls is independent of every variable considered except the grade level of …

Effects Of Selected Insects On Seed Production Of Hycrest Crested Wheatgrass, Ali Yusuf Issa

Biology

Studies were conducted to explore the relationship of common insect pests associated with the cultivar 'Hycrest' crested wheatgrass, Agropyron cristatum (L.) and A. desertorum (Fisher x Link). Insect population surveys were conducted on three farms during three summers to determine relative insect numbers. Thrips, Trigonotylus ruficornis, and Lygus hesperus were found to be the most abundant insect pests infesting Hycrest plants. A broad population peak was observed covering most of July through August for thrips, T. ruficornis, and L. hesperus. In addition to pest insects, the following beneficial insects were collected in significant numbers: Nabidae, Coccinellidae, Collops …

Enzyme-Hydrolyzed Retentate For The Development Of A Whipped Topping Mix, Shirley Ann Bond

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Ultrafiltered skim milk concentrated to 20-22% solids was hydrolyzed with a mixture of proteases from Aspergillus oryzae and an acid protease from Aspergillus niger. The enzyme preparation from A. oryzae did not produce bitterness, so the effects of its hydrolyzing action on the whipping properties of the retentate in liquid and powdered forms were examined. Its effect on the amount of soluble nitrogen in the powder was also determined. After inoculation of 250 ml retentate with .05% w/v enzyme, the samples were held in a 45°C water bath. The samples thickened with increasing hydrolysis until syneresis occurred. They also …

Expectations: A Guide For Childbirth Education At Logan Regional Hospital, Janet Radford Bergeson

All Graduate Plan B and other Reports, Spring 1920 to Spring 2023

The purpose of this project is to develop a childbirth education handbook for expectant parents that specifically follows the ongoing childbirth classes taught at Logan Regional Hospital. At present, much of the information that is provided to expectant parents comes from companies that advertise their products through childbirth education brochures. It is desirable that the students be provided with a complete, objective handbook to supplement the instruction received in the classroom.

Chronic Musculoskeletal Pain And Marital Adjustment Effects On The Spouse, Marilyn Matson Jones

All Graduate Plan B and other Reports, Spring 1920 to Spring 2023

Chronic musculoskeletal pain can fundamentally alter a marital relationship and have significant effects on marital satisfaction for both the chronic pain patient and spouse. This paper is a critical review of literature on chronic musculoskeletal pain and marital adjustment. Nineteen empirical studies are evaluated and serve as the data base for conclusions and recommendations. Variables which may effect marital satisfaction such as sexual function, spouse solicitousness, effects on the psychological and physical health of the spouse and gender differences are identified. The impact of these variables on marriage and the spouse in particular, is discussed. Implications for further research in …

A Multivariate Study Of Marital Quality, David W. Bradley

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Marital quality has been defined as the subjective feelings of happiness and satisfaction that a spouse experiences when considering all current aspects of his/her marriage. This study examined five dependent variables regressed on ten independent variables. The sample for this study came from the National Survey of Families and Households. Five hypotheses were found to be supported , with at least three of the five dependent variables showing statistical significance. Age at the time of marriage, education, health and well-being, and couples ' satisfaction in the parenting role were positively related to marital quality. The length of the marriage was …

Comparing The Perceptions Of Family And Parenting Between Juvenile Sexual Offenders And Juveniles With No History Of Sexual Offending, Iva W. Trottier

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Juvenile sexual offenders and a matched sample of nonoffending youth were compared on the Family Environment Scale (FES), the Family Adaptability and Cohesion Evaluation Scales (FACES ill), the Adult Adolescent Parent Inventory (AAPI), and a biographical inventory. The purpose was to determine whether or not juvenile sexual offenders and nonoffenders would prove to have different perceptions of family characteristics and whether the biographical inventory could distinguish between the two groups. "The sample consisted of 95 participants (46 offenders, 49 nonoffenders) in the northern Utah area. The offending population were in outpatient treatment for their sexual offending.

When the participants were …

An Ecological Test Of The Tragedy Of The Commons On Communal Rangeland In The Moroccan Western High Atlas, Lloyd Mendes

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

I empirically tested an hypothesis derived from a popularized version of Garrett Hardin's "Tragedy of the Commons" paradigm. Some range-development authors predict overgrazing and ecological abuse on all traditional communal rangelands. I estimated forage production, consumption, and season of use on one traditional agdal or intertribal common in the Moroccan Western High Atlas Mountains. Results from 1984-85 do not support the overgrazing predicted by "tragedy" proponents. I argue that the lack of overgrazing is not coincidental but is due to the traditional communal mechanism of controlling season of use.

Heterologous Expression And Characterization Of Three Active Recombinant Fungal Peroxidases From Phanerochaete Chrysosporium Using Baculovirus, Todd M. Johnson

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

In a collaborative effort with Dr. Steven D. Aust's group at Utah State University, this research is the first to describe the heterologous expression of active peroxidases from the filamentous fungus Panerochaete chrysosporium. The cDNA clones λML-1, λML-6, λML-5 and λMP-1, which had been tentatively identified as fungal peroxidase clones, were subcloned into baculovirus transfer vectors and recombinant Autographa californica nuclear polyhedrosis viruses were constructed which contained copies of these potential peroxidase genes. The recombinant baculovirus clones were used to infect insect cells for the heterologous production of active recombinant enzymes. Three recombinant lignin peroxidases (H2, H6 and H8) …

Intergenerational Transmission Of Family Strengths, John R. Bee

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The purpose of this research was to study several dimensions of family strengths in family systems and to determine to what degree these strengths are passed from one generation to the next.

The sample consisted of 23 couples, constituting the married child generation, and each husband's father and each wife's mother, constituting the parent generation, for a total of 23 family systems and a total N of 92 . Each person involved in the study had to be in their first marriage and have at least one child.

A significant (alpha .05) difference was found between the father and son …

The Play Of Visually Impaired Preschoolers With Their Mothers, Claudia Weber

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

This thesis answers the following questions: (a) Is the Play Assessment Scale a true measure of development? (b) Does the mother have a significant, positive influence on the child's level of development? (c) Does the mother's interactional style influence the child's development as measured by the Play Assessment Scale and the Battelle Developmental Inventory? The subjects were 13 visually impaired preschoolers. Development was measured with the Play Assessment Scale and the Battelle Developmental Inventory. Maternal interactional style was assessed with the Parent/Caregiver Involvement Scale. The study indicated that the Play Assessment Scale is a valid, reliable measure of development in …

Biological Detoxification Of Mercury Contaminated Soil, Shiying Zhang

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

This study examined biological mercury removal from soil using mercury-resistant bacteria in soil microcosms. Mercuric chloride was used to artificially contaminate Kidman soil to mercury concentrations of 5 ppm and 10 ppm. Soil moisture content was maintained at three levels, 20%, 30% and 50%. Mercury resistant-bacteria were added to soil samples and the mercury removal rate was compared to control samples without added bacteria. Mercury removal rate was initially enhanced by the addition of bacteria. After 30 days, no difference was observed between samples and controls with initial mercury concentration of 5 ppm when soil moisture content was 20%. At …

Immunophenotyping Of Lymphoid Cells In Autism, L. Jeanne Yonk

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Research into the cause of autism continues without any clear-cut answers. However, recent studies suggest that abnormalities of the immune system are associated with this disorder and autism results from failure of the immune system to regulate itself. Proper immune regulation requires that the host have the appropriate number and percentage of each population of lymphocytes and monocytes. These populations can be distinguished from one another with monoclonal antibodies that react with unique protein structures on the cell surface designated as the "cluster of differentiation" (CD) antigens.

This investigation studied the possibility that the immune abnormalities seen in autism are …

Utah School Counselors: Present Status, Linda J. Kuwana

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

This study presented data gathered from Utah school counselors about demographic information, counseling and guidance programs in Utah, certification requirements, future personnel needs, quality and appropriateness of training programs, philosophy of public schools, and needs and/or concerns. A questionnaire was used to collect data from 450 school counselors employed in the State of Utah. Utah school counselors were found to be primarily Caucasians over the age of 36 years. The majority of counselors in Utah were employed in secondary schools. Caseloads for secondary school counselors ranged from 300 to 600 students per counselor, and caseloads for elementary school counselors ranged …

Ethical Beliefs And Practices: Do Psychologists Differ From Other Health-Care Professionals, Gary Percival

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Ethical codes and principles, and laws govern the behavior of health-care professionals. Yet, the impact that ethical codes and laws have on the actual moral behaviors of health-care professionals is relatively unknown. A survey on the ethical beliefs and practices of health-care professionals was sent to the United States membership of the Association for Applied Psychophysiology and Biofeedback. AAPB's heterogeneous membership offers a unique opportunity to compare the ethical beliefs and behaviors of professionals across various health-care professions, educational levels, licensure and certification statuses, age, years in practice, and gender. The survey examined the respondents' ethical beliefs and practices in …

Instructional Logistics And Chunque-Based Learning Systems, Ian A. Mcarthur

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Existing instructional design and curriculum design strategy components were synthesized to provide a comprehensive set of design models for the development of learning systems. The term instructional logistics was coined to define the management of student progress through a series of customized learning experiences. Strategies were developed for the design of student-centered learning systems by partitioning a curriculum into meaningful and manageable pieces (called chunques) and by manipulating those pieces to create personalized and individualized paths through a series of self-contained learning experiences. Strategies were developed to organize a collection of chunques into a path based on initial simplified mental …

Comparison Of Laryngographic Waveforms Of An Adult And Child, Elaine Hicken

Undergraduate Honors Capstone Projects

The ability to accurately identify and differentially diagnose voice disorders is an important concern for the speech-language pathologist. This need has resulted in the development of methods which focus on identifying "objective, reliable, valid procedures for assessing voice disorders" (Costello, 1985). Several methods that allow direct observation of the laryngeal mechanism are invasive and time consuming. A method that is noninvasive and that provides valuable information about the vocal fold movement pattern is needed for clinical use.