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Dysphagia In Hereditary Sensory Autonomic Neuropathy Type Iv, U Shah, M Arshad, T Mozaffar

Department of Paediatrics and Child Health

No abstract provided.

Child Language And Literacy Development: A Parenting Resource Handbook, Joan B. Harrison

Undergraduate Honors Capstone Projects

One night a few years ago, my husband and I stopped in a fast-food restaurant to grab a sandwich. We sat down at a table and our eyes were drawn to a table close by. A young woman in her teens sat at the table, with a small infant in a carrier next to her on the floor. She sat, staring out the window, sipping a soft drink. After a few minutes, the baby began to fuss and squirm. The young woman continued to stare out the window. Soon the baby began to cry, but even this evoked no response …

The Relationships Among Body Satisfaction, Self-Esteem, And Social Support In Undergraduate Men And Women, Sarah Murray Hodson

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Significant levels of body dissatisfaction exist among college women. Research has also shown levels of body dissatisfaction among college men. Numerous studies have been conducted to investigate the relationship between body dissatisfaction and self-esteem as well as the relationship between self-esteem and social support. Past research, however, has neglected to determine if a relationship exists between body dissatisfaction and social support.

This study sought to determine if this relationship exists for college men and women. The present study was also developed to test the relationships that have been found between social support and self-esteem as well as between self-esteem and …

Growth Of Clostridium Sporogenes Pa3679 In A Vacuum-Packaged Meat-Vegetable Product, Julie M. Racz

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Clostridium sporogenes PA 3679 spores were inoculated into a meat-vegetable mixture before extrusion, cooking, and vacuum packaging into "stewsticks" to simulate Clostridium botulinum growth. The experiment was a 3 x 5 x 2 x 3 factorial which determined the influence of pH, water activity, initial spore load, and storage period on spore survival. Spore levels decreased throughout storage for all treatments. Spore levels decreased linearly (P = 0.02) as water activity increased, in samples that were heated to kill vegetative cells and activate spores. Other significant interactions of heat-treated samples were observed with inoculum level (P < 0.01) and storage time (P < 0.01). Spore levels in stored products were also significantly affected by water activity * inoculum level (P = 0.03), pH * time, water activity * time (P = 0.01), inoculum level * time (P < 0.01), and water activity * inoculum levels * time (P < 0.01). The interaction between pH * water activity * time tended towards significance (P = 0.06). Most probable number estimates in nonheated samples accounted for naturally occurring viable cells and spores, and added spores and were significantly affected by the main effects of inoculum level (P < 0.01) and time (P < 0.01). The two-way interactions of water activity * inoculum level (P = 0.04), pH * inoculum level (P < 0.01), water activity * time (P < 0.01), and three-way interaction of pH * inoculum level * time (P = 0.03) were significant. Spore levels approached 10², or less …

Influence Of Carbohydrate Starvation On The Culturability And Amino Acid Utilization Of Lactococcus Lactis, Mark R. Stuart

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Lactococci are widely used in the cheese industry as a starter culture. Starter cultures face carbohydrate starvation due to the absence of a fermentable carbohydrate in the cheese curd after pressing. Starvation leads to a decreased ability to synthesize ATP, generate a proton motive force, and accumulate nutrients necessary to maintain viability. The aim of this work was to investigate the culturability of lactococci grown with and without lactose in a chemically defined medium, and to define the metabolic changes that occur during carbohydrate starvation.

Lactose metabolism provided energy for logarithmic phase growth and greater cell density in L. lactis …

Influence Of Commercial Starter Media On Biochemical Characteristics Of Lactococcus Lactus, Norman Bart Devries

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Five strains of Lactococcus lactis were inoculated individually into six commercial bulk set growth media, 11% non-fat dry milk (NDM), and Elliker's broth. After growth in each medium the strains were tested for rate of acid production, and activities of proteinase, aminopeptidase, and lipase/esterase. Growth in commercial starter media significantly influenced acid production rate (P = 0.040), aminopeptidase activity (P < 0.0001), and lipase/esterase activity (P < 0.0001) .

For selected strain/media combinations, the duration of induced aminopeptidase and lipase/esterase activity was followed. The chosen strains were grown in selected commercial bulk set media, reinoculated into 11% NDM, and enzyme activity was examined for five successive …

In Vitro Growth Of Muscle Satellite Cells Isolated From Normal And Callipyge Lambs, Beatriz T. Rodriguez

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The muscle hypertrophy of lambs expressing the Callipyge phenotype is possibly linked to characteristics of their muscle satellite cells. Therefore, characteristics (proliferation, fusion %, and protein accretion) of cultured satellite cells isolated from the longissimus muscle of Callipyge (n = 3) and normal (n = 3) lambs were compared in this study. In the first experiment, we tested whether or not the lll proliferation rates differ for satellite cells isolated from Callipyge or normal sheep when cultured in the presence of different serum types (horse, normal lamb, or Callipyge lamb). The average population doubling time (PDT, h) during log phase …

Studies On The Utilization Of Deboned Trout (Oncorhynchus Mykiss) Frames In Fish Snack, S. Muralidharan

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Snack food development studies were conducted to iii utilize trout (Oncorhynchus mykiss) frames, a by-product of the filleting operation, using extrusion and conventional technology. Twin screw extrusion studies were conducted to study the effect of fish mince, non-fat dry milk, process temperature, and moisture content on the physicochemical properties of the extruded snack food. Response surfaces were plotted to understand the effects of the independent variables on dependent variables such as bulk density, expansion ratio, shear strength, and water absorption index. Quadratic models expressed the relationship between the dependent and independent variables.

Based on the extrusion studies, conditions …

The Development Of Pediococcus Species As Starters For Mozzarella Cheese, Shelby L. Caldwell

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Bacteriophage infection of Streptococcus thermophilus is a growing concern in the mozzarella cheese industry. One method to control this problem may be to replace S. thermophilus with a starter coccus from a different genus of lactic acid bacteria. This work evaluated the possibility of using genetically modified Pediococcus spp. for this approach. Electroporation was used to introduce genes for lactose utilization from Lactococcus lactis into strains of P. acidilactici and P. pentosaceus. The resulting lactose-positive transformants, P. acidilactici SAL and P. pentosaceus SPL-2, rapidly reduced the pH of lactose broth, accumulated [¹⁴C]lactose at a rate higher than …

Methanethiol And Cheddar Cheese Flavor, Benjamin Dias

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The use of slower acid-producing starter bacteria for the production of lower fat Cheddar cheese has lead to milder flavor Cheddar cheeses that lack intense Cheddar notes. The metabolism of methionine leads to the production of methanethiol, which is one of the desirable Cheddar cheese flavor compounds. The influence of NaCl and reduced pH was determined for aminopeptidase, lipase/esterase, and methanethiol-producing capability in selected lactic acid bacteria and brevibacteria in simulated cheese-like conditions. The activity of each enzyme decreased with NaCl addition and pH reduction to approximate a Cheddar cheese environment (5% NaCl and pH 5.2).

The mechanism for methanethiol …

Heat-Induced Gelation Of Ultrafiltered Whole Milk Concentrate And Product Applications, Hector Alejandro Solorio

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The heat-induced gelation properties of ultrafiltered (UF) whole milk concentrate were studied under different physical and chemical conditions. total solids concentration, homogenization pressures, heating temperatures, and heating times were found to have a positive correlation with gel strength. The addition of calcium chloride, sodium chloride, or trisodium citrate produced gels of higher strengths and textural properties than the gels obtained with non-salt-treated concentrate. Calcium chloride produced the strongest gels with a cheese-like texture and poor spreadability. Sodium chloride produced gels of intermediate strength with a firm, elastic texture and poor spreadability. Trisodium citrate produced the softest gels with a smooth, …

A Study Of The Effects Of Proteolytic Adjunct Culture On The Physical And Functional Properties Of Low-Fat Mozzarella Cheese, Roxanne Stone

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

As fat is removed from Mozzarella cheese, the resulting increase in protein content causes the cheese to become tough, thus decreasing the desired physical characteristics of meltability and stretch. Low-fat (6% fat) Mozzarella cheese was manufactured with the addition of several levels of a Lactococcus lactis adjunct culture that was proteinase positive and lactose deficient in an attempt to improve these physical properties. During cheese manufacture, milk was acidified to pH 6.0, then inoculated with Lactobacillus helveticus and Streptococcus thermophilus. Experimental vats were also inoculated with either 0.25, 0.50, or 1.0% of the adjunct culture. Cheeses made with the …

Heat-Stable Extracellular Enzymes Of Pseudomonas, Ramarathna Koka

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Psychotrophic bacteria produce heat-stable lipase, protease, and phospholipase. Pervious studies indicate the production of multiple enzymes in several strains of Pseudomonas fluorescens, but conclusive evidence is lacking.

The influence of culture conditions on the production and thermostability of phospholipase, protease, and lipase was investigated in 17 raw milk and environmental isolates. Production and thermostability of the enzymes were influenced by strain, stage of growth, and the culture medium. Cross-reactivity of antibodies raised to a purified protease and a commercial lipase indicated the immunological diversity of the enzymes.

Protease purification was undertaken to investigate the production of multiple proteases within a …

A Product Development Study: Rainbow Trout Bologna, Marshall Dean Smith

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Mechanically deboned rainbow trout (Oncorhynchus mykiss) was analyzed and then used in texture studies. The meat contained a moderately low amount of fat (10% ± 2%, x ± SD). Pre-deboned meat had more calcium than deboned meat (P < 0.001). Sausages were made of fish and various non-meat ingredients including egg whites, collagen, soy protein isolate, starch, cellulose, and wheat gluten. Adhesiveness, cohesiveness, hardness, shear and springiness of the cooked sausages were measured to describe texture. The data were fit to linear and quadratic models. Adhesiveness data did not fit the model (F(6,50)=1.1, P > {F{=0.37). A combined response model predicted formulations for fish sausage that would closely duplicate the texture of commercially available processed meats. A thermal model was developed that helped verify the thermal properties of rainbow trout. Thermal conductivity was measured (k == 0.48 W/m·K) and specific heat was calculated (C_p= 3200 J/kg·K).

Fathers And Sons: An Examination Of Distancing Patterns During Adolescence, Mark Ogletree

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Although there has been a new wave of research on fathering, little has focused specifically on the father and son relationship during adolescence. Previous research has documented that fathers and their daughters tend to distance themselves and disengage at the onset of menarche; however, the study and analysis of what happens to fathers and sons during the onset of puberty has been practically neglected. Several studies through the mid 80s and early 90s documented that parents and children tend to separate during adolescence, but only scant research has been conducted since that time. The goal of this study was to …

Influence Of Type Of Supplemental Carbohydrate On Ruminal Responses And Methane Output From Ruminants Consuming Low-Quality Forage, Raul J. Lira

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

In a completely randomized design with a factorial arrangement, three energy supplements and two species (cows and ewes) were evaluated in two identical experimental periods: gestation and lactation. The three supplement treatments were a control, barley, and sugar beet pulp (SBP). The basal diet was tall wheatgrass straw (5.52% CP).

Forage and total dry matter intake (FDMI and TDMI, respectively) interacted (P=.04) with species, supplements, and physiological stages.

An interaction of physiological stage and sampling time occurred for pH. Supplement and sampling time interacted for butyric acid proportion and total VFA concentration.

Diet digestibility displayed an interaction between …

The Impact Of The Ideal Thin Body Image On Women, Nicole Hawkins

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Researchers and clinicians have postulated that the thin-ideal image portrayed in the media leads to body dissatisfaction and negative self-appraisals among women; however, there is little research that has directly examined the effects of these images on women. The purpose of this research investigation was to experimentally examine the effects of exposure to the thin-ideal on women's affect, self-esteem, body satisfaction, and level of internalization of the thin body image. This study also assessed how the thin-ideal image differentially impacted women with a diagnosed eating disorder. College women (N = 145) were randomly exposed to photographs from popular magazines …

Navajo Adolescent Pregnancy: Identifying Ecocultural Factors Among Adolescent Mothers And Their Infants, Jessiline Anderson

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Understanding the adaptational responses and ecocultural niche of the Navajo adolescent mother from her perspective provides a richness of information about a little-studied population. The overall purpose of this study was to explore the ecocultural factors determined to be significant in the decision of a Navajo adolescent mother to remain in high school or drop out of high school. Thirty Navajo adolescent mothers recruited from two small reservation towns in eastern Arizona participated in the study. Navajo adolescent mothers in the study participated in a one and one half hour semistructured accommodations interview, and completed a Family Resource Scale and …

Effects Of Perceived Sugar Or Chocolate Intake On Self-Reported Food Cravings, Mood States, And Food Intake: A Double-Blind, Placebo-Controlled Study, Lara J. Schultz

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Many dieters and compulsive overeaters report that sugar and chocolate are the most commonly craved foods. Further, many individuals have proclaimed themselves to be "addicted" to sugar or chocolate. It remains unclear, however, what factors lead to report of specific food addictions. A number of researchers have suggested that highly repetitive consumption of sugar and chocolate may result from various physiological processes (e.g., neurochemical imbalances, glucose/insulin malfunctioning). However, there is also considerable evidence that psychosocial factors (i.e., expectancies, classical, and operant conditioning) play the major role in the development and maintenance of excessive sugar/chocolate intake. Empirical studies examining factors that …

Nest Success Of Dabbling Ducks In A Human-Modified Prairie: Effects Of Predation And Habitat Variables At Different Spatial Scales, Jaime E. Jimenez

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Nest success of dabbling ducks in the Prairie Pothole region of North America has been declining for the past 40 years in parallel with declines in duck populations. Low nest success seems to result from the combination of an extremely fragmented breeding ground in a human-dominated landscape with an abundant and expanding community of generalist nest predators. Studies that examined variables associated with nest vulnerability to predation have produced contradictory results, likely because of simplistic approaches, lack of spatio-temporal replication, use of artificial nests, and the effect of confounding variables. I attempted to clarify the equivocal findings of previous studies …

Influence Of Grazing, Fire, And Rainfall Regime On Plant Species Dynamics In An Ethiopian Perennial Grassland, Michael J. Jacobs

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The dominant habitat-type of Omo National Park (ONP), Ethiopia, is grassland. This grassland supports a variety of wild herbivores and indigenous people; the latter hunt large herbivores for subsistence or graze their domestic livestock in the Park. Therefore, an understanding of grassland dynamics is a high priority for ONP management. Grazing and fire are major factors influencing species composition and vegetation change in East African grasslands. Rainfall regime, in turn, can influence both grassland response to grazing and fire. The ONP grasslands occur along a rainfall gradient ranging from subhumid to semiarid. Research objectives were to: (1) test the Milchunas, …

Cross-Cultural Visual Communication, Chia-Wen Tsao

Theses

Explores how visual elements, such as ancient symbols and characters, have been used in visual communication across both Chinese and Western cultures. Analyzes existing cross-cultural packaging design examples. Compares packaging from a USA-based food company with a Taiwan-based food company in order to explore whether or not the design decisions communicate with ethnic audiences who are not familiar with these food products.

Volume 36, Number 34: April 30, 1999, University Of North Dakota

University Letter Archive

No abstract provided.

Effect Of Salinity On Seed Germination Of Triglochin Maritima Under Various Temperature Regimes, M. Ajmal Khan, Irwin A. Ungar

Great Basin Naturalist

Triglochin maritima L. (arrow grass), an herbaceous perennial in the family Juncaginaceae, is widely distributed in inland and coastal salt marshes of North America. Triglochin maritima seeds from a population growing in a salt marsh at Faust, Utah, were germinated at 4 temperature regimes (12-h night/12-h day, 5–15°C, 5–25°C, 10–20°C, and 15–25°C) and 5 salinities (0, 100, 200, 300, 400, and 500 mol m⁻³ NaCl) to determine optimal conditions for germination and level of salt tolerance. Ungerminated seeds were returned to distilled water after 20 d to determine whether seeds could recover from salinity treatments. Maximum germination occurred in …

Full Issue, Vol. 59 No. 2

Great Basin Naturalist

No abstract provided.

Reproductive Ecology Of Bison On Antelope Island, Utah, Michael L. Wolfe, Milan P. Shipka, John F. Kimball

Great Basin Naturalist

Autumn musters of bison (Bison bison) on Antelope Island State Park, Utah, conducted annually since 1987, provided data on temporal and age-specific reproductive patterns and a basis to evaluate the efficacy of management measures implemented to elevate reproductive performance in the herd. Pregnancy rates were variable and low (x̄ = 46.2%) in comparison to other free-ranging, noncommercial bison herds in North America. Cows in the 3- and >6-yr age classes exhibited lower-than-expected pregnancy rates (P < 0.05). Annual pregnancy rates showed a significant (r = 0.64, P = 0.047) linear decline of 2.5% per annum. Variance in distribution of fetal ages observed in 6 …

The Effects Of High Fat And High Carbohydrate Diets On Aerobic Performance, Julie Becker, Kelly Mattila

Masters Theses

The effect of a high carbohydrate (HCHO) or high fat (HF) diet on time to fatigue and mood state was examined in the present study. Six untrained males, (mean age 26.6 ± 0.74) were randomly assigned to a high fat (HF) or a HCHO diet for seven days. Subjects performed an endurance test at 55% of VO₂max following the diet. Time to fatigue and psychometric variables of the Profile of Mood States (POMS) were recorded. Subjects then consumed the alternate diet following one week of a normal diet and a second endurance test was performed. There was no …

Spring Commencement Ceremony, University Of North Florida

Commencement Printed Materials

Program for the Spring Commencement ceremony held at UNF Arena.

The Bg News April 30, 1999, Bowling Green State University

BG News (Student Newspaper)

The BGSU campus student newspaper. April 30, 1999. Volume 82-Issue 146.

Paper Session Iii-B - Development Of A Microgravity-Rated Hydroponic Plant Culture Apparatus, Howard G. Levine, William C. Piastuch, Thomas W. Dreschel

Space Congress® Proceedings

Porous tubes provide a novel means of growing plants hydroponically under conditions of microgravity. The experimental strategy for a spaceflight experiment utilizing this technology (anticipated in the 2000-2001 timeframe) is presented. The primary question to be addressed relates to the control of optimal rates of water provision, and how it can be expected to differ between the spaceflight and earth-based environments.