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Arsenic: An Analytical Procedure To Determine Its Total Content In Biological Samples And Signs Of Its Deprivation In Rats And Chicks., Eric Oliver Uthus

Theses and Dissertations

The first section of this dissertation deals with the development of a procedure for the determination of total arsenic in biological samples. Arsine generated from arsenic in dry combusted biological samples was measured by using an atomic absorption spectrophotometer equipped with a graphite furnace. Innovations of the method included the introduction of arsine into the interior of the graphite tube via one internal purge gas port only, the use of three traps to remove water from generated arsine, and the use of Erlenmeyer flasks in the generation of arsine. EDTA was added to the sample mixture to prevent interference from …

Health Risk Appraisal And Health Promotion Behavior In Young Adults, Diane L. Hanna

Theses and Dissertations

Health Risk Appriaisal (HRA) is gaining widespread popularity as a health promotion strategy. Yet there are limited studies to date to assess the impact of HRA on health behavior, particularly among young populations. The purpose of this investigation was to determine the effectiveness of individual HRA results as a stimulus for young adults to pursue health promoting behavior. It was hypothesized that young adults exposed to the results of their personal HRA would demonstrate a significantly higher health habits change score than would young adults given the HRA, but not exposed to its results.

A pretest-posttest, control group design was …

The History And Analysis Of The Grand Forks Teachers' Center, Virginia L. Bollman

Theses and Dissertations

No abstract provided.

Gray Partridge Occurrence In Relation To Land Use In North Dakota, James P. Samson

Theses and Dissertations

No abstract provided.

The Somatotypes Of Female Athletes At The University Of North Dakota, Margaret Mary Howell Zidon

Theses and Dissertations

No abstract provided.

Studies On Hepatic Glucose-6-Phosphatase And Glucokinase., Phillip Lee Stepanik

Theses and Dissertations

Studies of the effects of micromolar concentrations of a variety of di- and trivalent cations on glucokinase and hexokinase activities of rat liver found potent inhibition of both enzymes by Cu('+2) or Cr('+3). As determined by the Dixon and the Cornish-Bowden graphical methods of analysis for enzyme inhibition, Cr('+3) was a mixed inhibitor of glucokinase when either D-glucose or ATP and MgCl(,2) are the substrates varied and Cu('+2) was a competitive inhibitor of gluokinase when D-glucose is the substrate varied.The preference of glucose-6-phosphatase to catalyze glucose-6-P hydrolysis via the glucose-6-P phosphohydrolase reaction was compared to its synthesis via the phosphotransferase …

Policy Trends For Federally Financed Child Care Over Two Decades (1960-1979), James P. Pedersen

Theses and Dissertations

No abstract provided.

Winter And Spring Staging Ecology Of Mallards In South Central Nebraska, Dennis Gerald Jorde

Theses and Dissertations

Large numbers of mallards (Anas platyrhynchos) winter in or migrate through middle and northern latitudes of the midcontinent region in North America. Although an intensively studied species, the wintering and staging ecology of mallards north of traditional areas has received limited attention, leaving waterfowl administrators with limited information for developing management guidelines for mallard populations during these periods of the year.

Mallard activity patterns, foraging strategy, and physical condition were studied on the Platte River in south central Nebraska from mid-December to early April, 1978-80. Local movements, time budgets, food habits, physiology, and energetics during winter and early spring provided …

The Role Of Pioneering Species On The Reclamation Of North Dakota Surface Mined Lands, Louis R. Iverson

Theses and Dissertations

Four reclaimed mined areas in western North Dakota ranging in age from one to four years since mining, along with a site from a native mixed grass prairie for comparison, were studied to quantify the early successional changes in floristic composition, soil chemistry and plant chemical composition. The mined sites had been contoured, topsoiled, fertilized, and seeded. However, analysis of the seed bank in topsoil showed that the most dominant colonizers immigrate after topsoiling. Of the 95 species encountered, Kochia scoparia was the most dominant in the first two years following mining. Kochia had relatively low densities 2 in the …

School Food Service Staffing Patterns In Small Public-School Districts In North Dakota, Donna Dickson

Theses and Dissertations

No abstract provided.

Rabbit Heart And Vascular Responses To Carotid Occlusion And Peep With Denervation And Selective Adrenergic Blockade., Mark Robert Magnusson

Theses and Dissertations

Mechanical ventilation with inspiratory positive pressure and positive, end-expiratory pressure (PEEP) has been used to improve arterial oxygenation and to re-expand and stabilize collapsed areas of the lung in patients with non-cardiogenic pulmonary edema and adult respiratory distress syndrome. However lung hyperinflation by PEEP results in decreased cardiac output and mean arterial pressure. The interaction of the mechanical and the neuroreflex effects which alter cardiovascular function during PEEP have not been examined in a study designed to evaluate the components (arterial baroreflex, cardiopulmonary mechanoreflex, and mechanical) and their integrated effects.This study examined the cardiovascular responses to 2.5 cm H(,2)O PEEP …

Physical Dependence On Alcohol And Its Relationship With Divalent Cation And Carbon-Dioxide Concentrations, Blood Ph, And Intracellular Brain Ph In Laboratory Rats And Mice., Mark Allan Mitchell

Theses and Dissertations

The role of extra- and intracellular acid-base status and divalent cations in the onset and severity of withdrawal from chronic ethanol intoxication was investigated in mice and rats. Body temperatures in both species were significantly decreased throughout withdrawal. While temperature corrected bicarbonate and extracellular pH, and brain Zn('++) concentrations were significantly increased in alcohol-exposed mice, all other parameters monitored in mice and rats indicate the lack of alkalosis or changes in Mg('++) or Ca('++) concentrations during withdrawal.The severity of withdrawal following chronic intoxication was not affected by either 5% or 15% CO(,2) therapy during the withdrawal period. Fifteen percent CO(,2) …

Temperature Recordings In Neonates, Linda Marie Hestvik

Theses and Dissertations

Summary

The purposes of this ex post facto research study were to answer the following questions:

1. What is the length of time required for glass thermometers to register the temperature in neonates at the rectal and axillary sites?

2. Do significant differences exist between simultaneous axillary and rectal temperature recordings in neonates?

3. What is the relationship between axillary and rectal temperature recordings at specified time intervals in neonates?

A sample of 30, full-term neonates was obtained from the Newborn Nursery of a large teaching hospital in the Middle Atlantic region. All participants were over 24 hours of age …

The Relationship Between Type A Coronary-Prone Behavior Pattern, Achievement, And Life Satisfaction, Larraine A. Felland

Theses and Dissertations

This study examined the relationship between Type A coronary-prone behavior pattern, academic achievement and life satisfaction. The subjects were 87 undergraduates selected for their extreme scores on the Jenkins Activity Survey, Form T. There were 41 Type As and 46 Type Bs. Along with the Jenkins Activity Survey, Form T the participants were administered a life satisfaction survey similar to Soper's (1979) and their official academic gradepoint average was obtained from the Academic Records office. A point-biserial correlation indicated that there was a significant (p

The various relationships and their possible explanations and indications were discussed in depth. Significance of …

Alterations In Cerebellar Basket, Stellate And Purkinje Cell Dendritic Development Produced By Zinc Deficiency In The Suckling Rat., Christopher Lee Dvergsten

Theses and Dissertations

Rat pups suckled to severely zinc deficient mothers from birth were killed at 21 days of age. The cerebella were then examined by light and electron microscopy. Dendritic development was analyzed on Golgi-stained sections both qualitatively and quantitatively. Impaired pup growth, alopecia, hunched back posture and decreased femur zinc were seen in zinc deficient pups. Zinc deficiency impaired cerebellar development. The cerebellum was smaller and had fewer granule cells. The molecular layer was thinner and there was a persistence of the external granule cell layer. The normal cytoarchitecture of the cerebellar cortex was maintained in zinc deficient pups; however, basket, …

Mathematical Modeling Of Bicycle Dynamics With Computer Simulation, Timothy J. Pennings

Theses and Dissertations

No abstract provided.

Detection Of Zinc And Copper Binding Ligands In Milk By Modified Gel Chromatography, Kermit F. Licklider

Theses and Dissertations

No abstract provided.

Seasonal Activity And Time Budgets Of A North Dakota Fox Squirrel Population (S̲C̲I̲U̲R̲U̲S̲ N̲I̲G̲E̲R̲ R̲U̲F̲I̲V̲E̲N̲T̲E̲R̲), John P. Nelson

Theses and Dissertations

No abstract provided.

Factors Influencing Soil Respiration On Native Mixed-Grass Prairies And Reclaimed Mine Sites, David A. Bolt

Theses and Dissertations

No abstract provided.

The Influence Of Daylength, Temperature And Salinity On The Gametogenic Cycle Of The Banded Killifish, F̲U̲N̲D̲U̲L̲U̲S̲ D̲I̲A̲P̲H̲A̲N̲U̲S̲, David A. Porter

Theses and Dissertations

No abstract provided.

Sunflower In North Dakota : A Spatial Diffusion Analysis, Randal Lee Narloch

Theses and Dissertations

No abstract provided.

Elk Behavior In Relation To Winter Supplemental Feeding, Steven A. Williams

Theses and Dissertations

No abstract provided.

Enterotoxin Production By S̲T̲A̲P̲H̲Y̲L̲O̲C̲O̲C̲C̲U̲S̲ A̲U̲R̲E̲U̲S̲ Isolates Obtained From Nursing Homes, Gregory D. Greek

Theses and Dissertations

No abstract provided.

Effects Of Glucocorticoid Treatment On The Properties Of Single Notor Units In Cat Hindlinb Huscles, Andrew James Robinson

Theses and Dissertations

The administration of glucocorticoids has been shown to induce atrophy and weakness in whole skeletal muscle. These effects frequently appear to be more pronounced in pale muscle than in red muscle. The present study was undertaken to examine the effects of steroid treatment on the contractile, electrical, and fatigue properties of single meter units in pale and red cat hindlimb muscles. Single motor units in the medial gastrocnemius (MG) and soleus muscles were isolated using techniques developed by McPhedran, et al., (1965). The properties of a large number of motor units were examined in normal animals and were compared to …

Autecology Of Atriplex Canescens (Pursh) Nutt. In Southwestern United States, Roger W. Ruess

Theses and Dissertations

Atriplex oanescens, a facultatively evergreen dioecious shrub inhabiting cold and warm winter deserts of western United States, was studied at four sites in the Great Basin. The species was commonly a co-dominant in communities throughout its distribution, and was frequently found with other members of the Chenopodiaceae and members of Compositae. It was found to resprout vigorously and experiments indicated that seeds from all sites germinated easily in wetted, well 3 aerated soil. The mean plant size ranged from 0.62±0.48 to 7.05±2.19 m . 3 -1 Density and cover ranged from 400 to 1.022 X 10 plants ha , and …

A Model For Developing Community Defined Health Care, Joan M. Flynn

Theses and Dissertations

No abstract provided.

Energy Assistance Programs For The Poor, Sharon R. Erickson

Theses and Dissertations

No abstract provided.

The Winter Ecology Of The Gadwall In Louisiana, Stuart Lindsay Paulus

Theses and Dissertations

Data on the disabled in textbooks revealed that more disabled males than disabled females were visible. More adults including senior citizens were depicted as disabled characters. Sixty-seven percent of the disabilities were physical in origin. Nearly 70 percent of the disabled characters were Caucasian. Characterization and language were generally positive.

Analysis of flock characteristics indicated paired and unpaired gadwall remained partially segregated and that pairs were dominant over unpaired gadwall. Pairs were involved in less agonistic activity and remained at greater distances from other birds than unpaired gadwall. Pairing cnronology and behavior suggested that although pairs arose from temporary associations, …

The Effects Of Prenatal And Postnatal Zinc Deficiency On Development Of Long-Term Memory In The Rat, Myra D. Heinrich

Theses and Dissertations

The following studies were designed to determine whether zinc deficiency, either prenatal or postnatal, could influence the time course of development of long-term memory in rats. Three nutritional conditions were imposed on litters of rat pups. One group (zinc deficient-ZD) was subjected to a zinc-deficient diet and deionized water. Members of a second group (pair fed-PF) were allowed to eat as much of the zinc-deficient diet as a certain member of the ZD group consumed on the previous day, along with zinc-supplemented water. This PF group was starved, since zinc deficiency typically causes anorexia. The third group (ad libitum-AL) was …

Achievement And Selected Demographic Variables In Relation To Participation In The Early Childhood Education Program On The Devils Lake Sioux Reservation, John E. Derby

Theses and Dissertations

The 1969 Kennedy Report revealed that one of the primary reasons for low achievement among Indian children was the negative self-image that they had of themselves. As a primary result of this study, Congress passed the Indian Education Act of 1972, which attempts to address the educational needs and concerns of Indian people, both young and old alike. The Devils Lake Sioux Early Childhood Education program has been in existence since the mid 1960s and provides three- and four-year-old children with a preschool program in the areas of cognitive thinking, social development, and improving psychomotor skills. The purpose of this …