Digital Commons Network^™

Hydroxide Binding Equilibrium In Hemerythrin, John David Mccallum

Dissertations and Theses

The measurement of the equilibrium constant and the thermodynamic parameters of the binding of hydroxide ions to the active site of hemerythrin, an invertebrate iron containing protein, was done by a new difference spectroscopic method. The method enables accurate measurements of equilibrium constants without accurate knowledge of molar absorptivities or protein concentrations and is novel in that it takes the difference between the two equilibrium mixtures, thus enabling the measurement of equilibrium constants when it is not convenient or possible to produce either substance as a pure reference material.

Correlates Of Sophisticated Listener Judgments Of Esophageal Air Intake Noise, Vincent Eccleston

Dissertations and Theses

The literature on esophageal speech has identified the problem of extraneous air intake noise, suggested its possible etiology, and provided practical advice for clinical management. Documentation on the efficacy of specific methodology is lacking in the literature. Such documentation would be simplified if objective criteria were used to rate the severity of intake noise. The present study was prompted by the lack of basic data regarding listener evaluation of intake noise.

The purpose of this study was to identify physical and perceptual correlates of acceptability of esophageal air intake noise. A primary and a secondary question were asked:

Are selected …

Acoustical And Perceptual Correlates Of Vocal Effort In Normal Hearing And Hearing-Impaired Children, Corinne A. Thomas-Kersting

Dissertations and Theses

The present study was designed to investigate the perceptual and spectrographic features of vocal effort in the speech of severely to profoundly hearing-impaired children and their normal hearing agemates. Recorded vowel and speech samples were obtained from ten normal hearing children, ten severely to profoundly hearing-impaired children attending Oral/Aural educational programs, and eight severely to profoundly hearing-impaired children attending Total Communication programs. The degree of perceived vocal effort for vowels and speech was evaluated, using a nine point equal-appearing-interval scale. In order to obtain a physical measurement for vocal effort, a digital wave analyzer was used to produce vowel spectra, …

Geology And Hydrothermal Alteration, Glass Buttes, Southeast Oregon, Dulcy Annette Berri

Dissertations and Theses

The Glass Buttes volcanic complex consists of many domes and individual vents that erupted both rhyolitic and basaltic lavas during the late Miocene to early Pliocene. The east half of the complex, in the vicinity of Little Glass Butte, contains interfingering, finely flow-banded rhyolite and black obsidian flows. The youngest unit, an obsidian, has been dated at 4.9 m.y. East of Little Glass Butte lie two northwest-trending ridges, Antelope and Cascade Ridges, composed of two or more overlapping exogenous domes that formed along northwest-trending faults.

Developing A Test Of Communicative Competence For English As A Second Language Students At The College Level, Kristen Kern

Dissertations and Theses

The purpose of the research was to develop a test of oral communicative competence for English as a Second Language (ESL) students at the college level.

This research first reviewed the current literature on the topic of communicative competence from the perspectives of linguistics and sociolinguistics, discourse analysis, and speech communication. The 1iterature on testing for communicative competence within the ESL and foreign language teaching fields was also reviewed. A 7-minute oral semi-direct taped test was then developed and administered to a trial group of 5 ESL students and a final group of 25 ESL students at Portland State University. …

A Geochemical Study Of The Rhododendron And Dalles Formations In The Area Of Mount Hood, Oregon, Marshall W. Gannett

Dissertations and Theses

The Miocene Rhododendron and Dalles Formations in the Mount Hood area are accumulations of chiefly pyroclastic andesitic material, largely confined to the Dalles-Mount Hood syncline. These very similar units are geographically separated by overlying andesites including the present Mount Hood cone, and past workers have suspected that they may share a common source. Prior to this study, few geochemical data were available for the Rhododendron and the Dalles Formations, compared to the well studied Columbia River basalts underlying them and the overlying Pliocene andesites. This geochemical study was designed to investigate certain aspects of the Rhododendron and Dalles Formations such …

The Pursuit Of Form, Robert Allen Anderson

Dissertations and Theses

This thesis includes the work of Robert Allen Anderson for a Master of Fine Arts in Sculpture.

Teaching Figure Drawing To Adolescents Within The Context To [I.E. Of] Imaginative Compositions, As A Means Of Increasing Artistic Confidence And Abilities, Christine Flavell Turner

Dissertations and Theses

This thesis describes a process of teaching figure drawing to adolescents which places importance on the subjective experiences of the students. Traditional figure drawing methods emphasizing the development of visual perceptual skills are integrated with activities which are designed to secure emotional participation, and develop awareness of art as a means of expression and communication. This approach seems to motivate students and to reduce the anxiety usually experienced by adolescents when they are drawing the figure.

Structure And Influence Of The Tillamook Uplift On The Stratigraphy Of The Mist Area, Oregon, Moinoddin Murtuzamiya Kadri

Dissertations and Theses

Fifty three sedimentary samples were analyzed for their minor and trace element concentrations utilizing instrumental neutron activation analysis. Concentrations of Na, K, La, Sm and Sc, and their ratios appear to establish significant trends. The data suggest a major break from a granitic-metamorphic provenance and a volcanic component dominated provenance between the Cowlitz and Keasey Formations respectively. The provenance of the Astoria Formation indicates the presence of flood basalts.

The Stratigraphic Relationships Of The Columbia River Basalt Group In The Lower Columbia River Gorge Of Oregon And Washington, Terry Leo Tolan

Dissertations and Theses

The purpose of this study was to produce a detailed geologic map of the CRBG in the western portion of the Columbia River Gorge (fig. 1). The objectives were (1) to identify and delineate the extent of the Priest Rapids Member and Pomona Member intracanyon flows, and (2) to define the relationship of post-CRBG units to the CRBG intracanyon flows.

A Preliminary Investigation Of The Lithological Characteristics Of The Troutdale Formation In Portions Of The Camas, Sandy, Washougal, And Bridal Veil Quadrangles, David Lee Cole

Dissertations and Theses

The study area encompasses a region of about 80 square kilometers, centered about Corbett, Oregon. Sieve analyses suggest that the Troutdale Formation is composed of a conglomerate, a coarse-grained sandstone, and a siltstone lithofacies. Measured sections data show that 56 to 60 percent of the Troutdale Formation's exposures are composed of the conglomerate lithofacies. The coarsegrained sandstone lithofacies makes up 34 to 38 percent, while the siltstone lithofacies makes up only 4 to 8 percent. Pebble count data show that the representation of basalt varies from 69 to 100 percent, with an average of 85 percent, while quartzite varies from …

Developing An Attitude Test To Predict Treatment Outcome In Depressed And Anxious Outpatients : An Exploratory Study, Kathryn Ainslie Paris

Dissertations and Theses

While much research has examined factors thought to affect patient compliance with therapeutic regimen, relatively little is known about the relationship between psychiatric patients' attitudes toward treatment regimen and their adherence to the treatment regimen. Compliance rates for psychiatric patients remain the lowest of the medical patient population, probably due to psychological and social characteristics of psychiatric patients. Because of a trend in the United States toward self-medication for an increasingly ambulatory psychiatric patient population, the ability to predict patient compliance with medication regimen has become more important than ever before. Before potential noncompliers can be identified and patient compliance …

Investigation Of The Contribution Of Aquatic Humus To The Transport Of Ddt In The Environment, Dan Philip Blunk

Dissertations and Theses

The fate and transport of insoluble, hydrophobic organic pollutants in the aquatic environment constitutes a prominent area of concern. It is thought that pollutants of this nature may exist in association with organic carbon, which is predominantly aquatic humus. This type of association could significantly affect the kinetics of such transformation processes as volatilization or chemical and biological degradation of the pollutant. While dissolved organic matter (DOM) comprises the bulk of organic carbon (or aquatic humus) in natural waters, the interaction between naturally occurring DOM and insoluble organic pollutants has not been quantified. The work presented in this dissertation is …

Development Of An Operational System For Monitoring The Changes In Urban Subarea Residential Housing Status: A Spatial Analytic Application Of The Formulations Of Neighborhood Filtering And Neighborhood Dynamics, Harold Chike Mba

Dissertations and Theses

This dissertation focuses on the precise and meaningful measurement of change as it pertains to the urban subarea residential housing status. The word "measurement" is qualified as meaningful in the sense that the approach adopted is of relevance to public policy. Specifically, the dissertation is aimed at providing answers to the following research questions: First, how can the changes in residential housing status in the different parts of an urban area be precisely and meaningfully measured? Second, what variables are most appropriate for the measurement? Third, can these variables be useful for differentiating between various parts of the urban area? …

Kinetics Of Proton Transport In Lipid Membranes Induced By Some Chlorinated Phenols, Ananda Ranjith Jayaweera

Dissertations and Theses

This dissertation represents an attempt to understand the mechanism of the action of pesticides derived from chlorinated phenols (pentachlorophenol, pentachlorobenzenethiol, and 2,4,5-trichlorophenol) in lipid membranes; specifically, the kinetics of pesticide induced hydrogen ion transfer in lecithin-cholesterol membranes and its relationship to uncoupling activity in energy transducing membranes. Information on pesticide induced charge transport in membranes was obtained from the measurements of steady state and transient membrane conductance and membrane potentials as a function of the composition of the aqueous phase surrounding the membrane and of membrane composition. In addition, a systematic theoretical study of a series of membrane transport models …

The Articulation Of Formal And Informal Helping: The Influence Of Organizational Context On Relationships Between Professional And Lay Caregivers, Priscilla J. Kimboko

Dissertations and Theses

This research is an exploratory study of thirty human service agencies' programs to link their services to informal helpers in their communities. The helpers were persons identified as important helping resources to persons in their own social networks, who were often also clients of the service agency. The thirty agencies were drawn from across the nation, and served several different types of client populations and needs. Models from practice and theory suggest that linkages between the formal and informal caregiving systems should be modeled after primary relations, informal and personal in character. Research and literature on organizations suggests, however, that …

Social Support And Well-Being In Middle-Aged And Elderly Spinal Cord Injured Persons: A Social-Psychological Analysis, Susan Dee Decker

Dissertations and Theses

Advances in health care science are enabling greater numbers of spinal cord injured persons to live to old age. As these persons grow older, there may be additional problems in coping due to stressors such as decreasing health and income and loss of significant others. The purpose of this study was to determine those factors that contribute to the well-being of middle-aged and elderly community-residing spinal cord injured persons. One hundred spinal cord injured persons ranging in age from 40 to 73 were interviewed. Extensive data were collected in order to investigate the relationship among social support, types of social …

A Study Of The Personality Characteristics Of Tinnitus Patients, Gloria E. Reich

Dissertations and Theses

A short form of the Minnesota Multiphasic Personality Inventory was administered to 146 clinical patients who suffered from either tinnitus or a hearing disorder or both. Patients were assigned to four groups on the basis of their subjective complaint and their audiometric report: patients with tinnitus only, patients with tinnitus and a hearing loss where the tinnitus was the primary complaint, patients with tinnitus and a hearing loss where the hearing loss was the primary complaint, and patients who had a hearing loss but no tinnitus. The purpose of the study was to determine whether there were certain measurable personality …

Impacts Of Environmental Design On Residential Crowding, Ed Tieh-Yeu Huang

Dissertations and Theses

This dissertation addresses the following research questions: How do physical features of high density college dormitories affect residents' perception of crowding, and what kinds of design strategies are available for alleviating the perceived crowding? The data source was responses to a self-administered questionnaire from residents of living units which were randomly sampled from three dormitories of comparable physical density at Oregon State University. Seven hypotheses were used to examine the relationship between perceived crowding and physical features associated with different settings in selected dormitories. The first hypothesis sought to clarify how selected physical variables, compared with selected social and personal …

Housing The Low-Income, Urban Elderly: A Role For The Single Room Occupancy Hotel, Mary Ann Burki

Dissertations and Theses

This study examines the question of whether there is a role for the single room occupancy (SRO) hotel as a form of housing for a select group of low-income, urban elderly persons. Such a focus was selected because it is the single room type of housing, with neither individual kitchen nor bath, which HUD defines as substandard. This definition is viewed as problematic for several reasons. First, it has been a major barrier to the use of Federal funds to support such housing either through rehabilitation or rent subsidy, and second, it has been a major incentive to the use …

The Effect Of Chronic Post-Natal Protein Deprivation On The Social Interaction Of The Rhesus Macaque, Gertrude Alice Fogle

Dissertations and Theses

It has been well documented that protein calorie malnutrition (PCM) gives rise to physiological and behavioral deficits. These deficits include changes in emotional, exploratory and social behaviors of the malnourished organism. In particular, previous research has demonstrated that Feci from infancy results in avoidance of and failure to initiate social interactions as well as decreased contact with the environment, which in turn, further disrupt emotional and social development. This study examined the effects of chronic protein malnutrition on the social behavior of adult rhesus macaques by experimentally testing the hypothesis that deficient monkeys, unlike normal well-fed ones, are more likely …

A Qualitative Analysis Of Nine Nonverbal Communications Texts, Edward J. Cavin

Dissertations and Theses

Throughout the past decade, numerous texts have been published which claim to be ideally suited for use in a basic, introductory nonverbal communication course. Many authors state that their text will comprehensively cover all aspects of the field of nonverbal communication. Unfortunately, many of the texts cover only a portion of the concepts which have been deemed as essential for inclusion in a beginning nonverbal communication course.

With the plethora of material relating to this topic on the market, there is a need for a comprehensive evaluation form by which an elevator could determine the specific method of layout (manner …

Toward A Measure Of Correspondence In Relational Perceptions In Marital Dyads, Deborah Anne Coker

Dissertations and Theses

In order to assess a component of communication in interpersonal relationships, an instrument was developed to determine the correspondence in relational perceptions between partners in a marital dyad. The current study focuses on the levels of awareness spouses exhibit regarding phenomenological perceptions of themselves, their partners and the status of their dyadic system.

Adolescent Chemical Substance Use And Abuse : Environmental And Personal Determinants, And A Proposed Model For Group Intervention, Lindy Louise Low Lecoq

Dissertations and Theses

The purpose of the literature review is to identify consistent patterns regarding adolescent use and abuse of chemical substances, especially alcohol and marijuana. Acute physical, cognitive and social effects of alcohol and marijuana use are outlined, and environmental and personal determinants of drug use and abuse are examined. Methods of prevention and intervention are discussed and, from the research findings, a model group counseling program designed for the school setting is proposed. Adolescent use of both marijuana and alcohol is found to be modal by age 16-17. The physical, cognitive and social effects are pervasive and especially damaging to chronic …

The Copper Complexation Properties Of Dissolved Organic Matter From The Williamson River, Oregon, Charles Russell Lytle

Dissertations and Theses

Recent research has indicated that dissolved organic matter (DOM) may plan an important role in the ability of natural waters to complex metals. This research was conducted because the quantitative nature of this role is uncertain. Gas-liquid chromatography was used to study the hydrolyzable amino acids at twelve sampling sites on the Williamson River at monthly intervals for two years. The relative abundances showed little spacial or temporal variation. The two-year averages for total amino acids ranged from about 0.5 (mu)M to about 8 (mu)M. A separation technique was used to show that (GREATERTHEQ) 96% of the dissolved amino acids …

Laser Induced Hydroxyl Radical Fluoresence At Atmospheric Pressure, Cornelius Yuk-Kwan Chan

Dissertations and Theses

Laser Induced Fluorescence (LIF) is one of the chief methods for detecting ambient hydroxyl radicals. To measure the absolute concentration of this important atmospheric chemical species, accurately known quenching rate constants due to the dominant gases in the air are of paramount importance. Unfortunately, these rate constants have only been measured under conditions remote from those of ambient air. This dissertation reports the measurement of the rate constants of water, argon, nitrogen and oxygen under ambient conditions. As the LIF is carried out at atmospheric pressure, the OH fluorescence life-time becomes extremely short (about 1 ns). Time Correlated Photon Counting …

The Effect Of Parent-Child Interaction On The Language Development Of The Hearing-Impaired Child, Arla J. Melum

Dissertations and Theses

In recent years much interest has been focused on the manner in which the young child acquires language. Some researchers (Chomsky, 1965; McNeil) have postulated an inherent capacity to comprehend and utilize linguistic structures, while others such as Irwin, (1960), Hess and Shipman (1965), and Greenstein, et al, (1974) have focused on experiential determinants of language competence in early childhood. As with all children, the social and emotional behavior of deaf children is greatly influenced by their ability to communicate with significant others. Interactions between the normally developing child and his parents are characterized by mutual responsiveness, where each initiates …

Proverbs : Tools For World View Studies : An Exploratory Comparison Of The Bemba Of Zambia And The Shona Of Zimbabwe, Larry L. Niemeyer

Dissertations and Theses

The proverbs of people - defined by Webster as short sayings "in common use expressing a well-known truth or common fact ascertained by experience or observation" - have been an object of study to many kinds of people for many decades. Robert R. Marett has said that proverbs are a key to both the language and culture of a people. But, knowledge of the language and culture of a people, in itself, cannot be satisfying to the discerning anthropologist. An effort must be made to identify and understand the categories of thought, codes and symbols that undergird their language and …

The Determination Of A Relative Chronology For A Surface Archeological Site Using The Obsidian Hydration Dating Method, Scott Preston Thomas

Dissertations and Theses

This methodological study is an attempt to develop relative chronologies for surface archaeological sites from the obsidian hydration analysis of waste flake samples. Two sites in southeastern Oregon were selected and their surface components sampled. The results of the obsidian hydration analysis indicate, that with the use of random sampling methods and general geochemical control, a fairly accurate representation of the history of an archaeological surface site can be obtained.

Chemistry Of Chromium Oxyfluorides And Group Vib Perfluoroglutarates, Bruce Michael Johnson

Dissertations and Theses

Pure chromium oxide trifluoride was prepared for the first time by reaction of CrO₃ and ClF with subsequent multiple fluorine treatments at 120°C. On the basis of its infrared spectrum, the purple CrOF₃ was assigned as a fluorine-bridged polymer with terminal oxygen groups. Chromium oxide trifluoride was found to be stable to 300°C, where it decomposes with the loss of oxygen to CrF₃.