Life Sciences Commons^™

Numerical Techniques For Classifying Forest Communities In The Tennessee Valley, Dennis Michael Mccarthy

Doctoral Dissertations

The main objectives of this study were:

1. To develop a series of vegetational classification systems based on the floristics of community strata, overstory structural functional features, and environmental parameter of a region typical of the temperate Tennessee Valley;

2. To examine the suitability of these classification systems for the complex forests of the Tennessee Valley;

3. To develop numerical tools for evaluating classification suitability;

4. To use these tools to seek out natural discontinuities in vegetational patterns.

To achieve these goals six multivariate cluster analysis programs were examined. Preliminary tests brought out undesirable properties in four of them, however, …

Development Of A Mathematical Model That Will Predict The Mean Daily Dietary Intake Of Pregnant Women Based Upon Sociological, Psychological And Physiological Factors Assumed To Be Related To The Mean Daily Dietary Iron Intake, Waneen Ann Liudahl

Doctoral Dissertations

The purpose of this investigation was to develop a mathematical model using linear stepwise regression analysis that would predict the dietary iron intake of pregnant women. Development of the mathematical model was based upon sociological, psychological and physiological factors assumed to be related to the dietary iron intake of pregnant women.

Fifty-seven pregnant women participated in the study. They were private outpatients of two obstetricians at the Macomb Clinic, Macomb, Illinois.

The dependent variable used in the development of the models was the seven-day mean daily dietary iron intake for each pregnant woman which was obtained during the second and/or …

Intrerconversion Of Replicative Forms Of Sindbis Virus Rna And The Electrophoresis Of Viral Rna, Jonathan D. Martin

Doctoral Dissertations

Three species of double-strand (ds) RNA, designated RF I, RF II, and RF III in order of decreasing size, were produced by RNase treatment of extracts of chicken embryo cells infected for 6 h with Sindbis virus. These species were identifiable with those reported by Simmons and Strauss (28). At a low level of enzyme (0.001 µg/ml) the major species obtained was RF I. When the enzyme concentration was increased 10-, 100, and 1000-fold, there was a progressive increase in the proportions of RF's II and III and a concurrent decrease in the proportion of RF I. Only RF I …

Accommodation Preferences Of Traveling Families With Young Children Staying In Tennessee Hotels And Motels, Dorothy Ann Gillespie

Masters Theses

The purpose of this research was to survey hotel and motel accommodation preferences of families with children under three years. A survey of families traveling with young children in 36 randomly selected hotels and motels in four Tennessee cities was taken over a one month period.

Data were obtained through the use of a questionnaire which was designed to show family income levels of $7,001-$15,000 and $15,001 and above as well as age differences of children under three. The age range of the children included one month to 36 months.

Results showed that there were a few limited differences in …

Comparison Of Fish And Benthic Faunal Compositions In Polluted And Pristine Forks Of A Mountain River, Lynn Betson Starnes

Masters Theses

The little Pigeon River in Sevier County, Tennessee presents a near ideal situation for the study of the effects of domestic sewage on species composition in a mountain river. The little Pigeon system has two principal components, the West and Middle Prongs. The West Prong is polluted by municipal effluent from Gatlinburg and Pigeon Forge, while the Middle Prong remains relatively pristine. Physicgraphically, the two prongs are strikingly similar. The great similarity of natural physical and chemical water quality parameters presents an opportunity to use the pristine prong as a control for the study of changes, probably resulting from pollution, …

The Distribution Of Fishes In The Little Tennessee River System, James Mckee Winfield Jr.

Masters Theses

This paper is the product of a study of the ichthyofaunal distribution within the Little Tennessee River. This system is a major tributary to the Tennessee River.

A total of 212 collections are included in this paper. Of this total, 67 were made by the author. The remainder of the collections were made by various agencies and individuals. Of the total number of collections made by the author, approximately half were done using diving gear and employing sight identification. The remaining collections were accomplished with the aid of seines.

Included in this paper is a list of the species of …

Factors Influencing Tennessee Teen 4-H Leader's Perception And Performance Of Leadership Tasks, Martha Jo Tolley

Masters Theses

The purpose of this study was to explore the role perceptions of teen leaders and to identify some factors which influenced their role performance.

The population of the study consisted of all 453 4-H members who attended the 1975 State 4-H Round-Up at The University of Tennessee in Knoxville.

The data were organized under five major headings: (1) personal characteristics of respondents, (2) perceptions teen leaders had of their role in the 4-H organization, (3) relation between teen leaders' role performance and their feelings of preparedness to perform the leadership role, (4) influence of personal, 4-H participation, and leadership characteristics …

Movements And Activities Of The Black Bear (Ursus Americanus) In The Great Smoky Mountains National Park, Alton Louis Eubanks

Masters Theses

This study was conducted on the Tennessee side of the Great Smoky Mountains National Park west of U.S. 441. The region is mountainous, with diverse habitats and considerable variation in temperature and precipitation. The major objectives were to describe bear movements and activities using radioisotopes and radiotelemetry, to determine diel activity patterns, and to evaluate selected radioisotopes as possible feces tags.

In September of 1974, two penned bears were injected with ⁶⁰Co or ¹³⁴Cs. Results of an earlier study using ¹⁰⁹Cd and ¹⁴⁴Ce were evaluated. All isotopes appear unsatisfactory as suitable feces tags.

From June through …

Number 3 (November 1976), W. M. Howell, A. Black

Southeastern Fishes Council Proceedings

Status of the Watercress Darter. By W.M. Howell and A. Black, plus News Notes, 4 pp.

Status Of The Watercress Darter, W. Mike Howell, Ann Black

Southeastern Fishes Council Proceedings

No abstract provided.

News Notes, Southeastern Fishes Council

Southeastern Fishes Council Proceedings

No abstract provided.

Rural Family Functioning, University Of Tennessee Agricultural Experiment Station

Bulletins

No abstract provided.

Effects Of 2-Chloroethyl-Phosphonic Acid (Ethephon) As A Male Gametocide For Induction Of Sterility In Wheat And Barley, Jacqueline Taylor Martin

Doctoral Dissertations

Exploitation of induced male sterility has now become a potential tool in plant breeding. Ethephon (2-chloroethyl-phosphonic acid) has induced male sterility in winter cultivars of wheat and barley.

The purpose of this research was to further elucidate the response of winter wheat (Triticum aestivum L. em Thell), and winter barley (Hordeum vulgate L.) to foliar application of ethephon.

Ethephon was foliarly sprayed on winter cultivars of wheat and barley which were Arthur and Blueboy, and Barsoy and Volbar respectively, at 0.05, 0.10, and 0.20 and 0.40 percent active ingredient, when plants were in mid-boot and late boot stages in the …

Number 2 (August 1976), M. F. Mettee

Southeastern Fishes Council Proceedings

A Status Report on the Okaloosa Darter in Northwest Florida. By M.F. Mettee, et al., plus NewsNotes, 4pp.

Lodging And Other Characteristics Of Seventy Corn Hybrids, Carl Andrew Ross

Masters Theses

In 1975, a lodging study was conducted on forty medium season and thirty full season corn hybrids at Knoxville and Crossville, Tennessee. Lodging and yields were determined at Knoxville and Crossville. Senescence over time, ear height, and number of days to silking and tasseling were determined at Knoxville.

Senescence, ear height and yield has little or no influence on lodging. Among all the factors evaluated, ear height, senescence, and number of days to silking and tasseling affected yields most in the medium season test. Ear height and number of days to silking and tasseling had the greatest effect on yields …

Effects Of Female Sex Hormones And Dietary Magnesium Levels In Sheep, Kenny S. Marbury

Masters Theses

The major objectives of this study were to evaluate (a) the effects of diet on magnesium, calcium and potassium metabolism in yearling wethers and (b) the effects of progesterone, estradiol and diethylstilbestrol (DES) on the metabolism of the minerals.

A two by two factorial design was selected whereby twelve yearling crossbred wether lambs were divided into four groups of three. One group was fed a basal diet plus magnesium along with hormones, one group was fed a basal diet plus magnesium without hormones, one group was fed a magnesium-deficient diet along with hormones, and one group was fed a magnesium-deficient …

Evergreen Tree Species For Urban Use In Eastern Tennessee, Vivian Orr Potter

Masters Theses

The objective of this study was to determine which of five tree species was best suited for urban conditions in eastern Tennessee with respect to certain criteria. The species included eastern white pine (Pinus strobus L.), eastern hemlock [Tsuga canadensis (L.) Carr.], Norway spruce [Picea abies (L.) Karst.], southern magnolia (Magnolia grandiflora L.), and eastern red-cedar (Juniperus virginiana L.). The criteria used for comparing the species were resistance to disease, resistance to insect pests, range of soil fertility adaptability, range of soil pH adaptability, and aesthetic appeal.

Questionnaires were sent to nurserymen …

Selected Characteristics Of High And Low Performance Rated Extension Agents Responsible For The Tennessee Agricultural Extension Special Program In Food For Youth, Beverly Daniels Kosoko

Masters Theses

The purposes of this study were to characterize High and Low performance rated Agents, to determine the relationship between performance rating level, attitude toward the assignment and other attributes of SPIFFY Agents in Tennessee. It was also proposed to identify selected aspects of the SPIFFY programs conducted by High and Low rated Agents.

The population of this study included all 37 SPIFFY Agents in the State of Tennessee. The data were collected by means of a mail questionnaire. A secondary source of data consisted in personnel records.

Results of the study indicated that level of performance was consequentially related to …

Relationships Between Bone Density And Dietary Intakes Of Energy And Protein In Older Female Vegetarians And Nonvegetarians, Mary Elizabeth Kunkel

Masters Theses

The purposes of this study were to compare differences in bone density, height, and weight among female vegetarians and nonvegetarians and to determine significant relationships between the physical measurements and dietary intake of calories and protein.

After obtaining informed consent, complete data were collected on 43 vegetarians and 36 nonvegetarians. Height, weight, and bone density measurements were taken. Dietary information was obtained from 7-day dietary records and diet histories. Dietary supplements were also recorded.

Daily intakes of calories, protein, and fat were calculated by computer using the food values in USDA Handbook No. 8. Percent of the total calories coming …

Consumer Acceptance And Evaluation Of Quality Attributes Of Beef Semimembranosus Roasts Heated At Three Oven Rates, Norma Pauline Ball

Masters Theses

Tenderness, an important quality attribute of meat, is affected by many factors including rate of heating. This quality attribute also has been reported as the single most important criterion for judging meat quality by the consumer. The purpose of this investigation was to evaluate selected quality attributes of beef semimembranosus roasts heated at three oven rates (93^oC, 149^oC, and a combination of 93^oC and 149^oC) using a consumer panel and instrumental measurements to determine whether tenderness is the most important meat quality attribute to the consumer and to study consumer habits and …

Effects Of Ethephon On The Pattern Of Flowering And Fruit Set Of Summer Squash, Carl Earnest Sams

Masters Theses

The plant growth regulator 2-chloroethylphosphonic acid (ethephon) was applied to summer squash to determine its effects on the flowering pattern. Treatments with all pistillate flowers pruned at anthesis, with and without ethephon applications were also compared to control plants to investigate the factors regulating flowering and fruit set of summer squash.

It was found that plants in the pruned treatments had a greater carbohydrate accumulation than plants in the nonpruned treatments, indicating that carbohydrate accumulation may be inversely associated with fruit development. Ethephon treatments produced more pistillate flowers per plant but also had a large number of aborted flowers. Thus, …

Induced Variability Of Resistance To Root-Knot Nematodes (Meloidogyne Incognita) In Soybeans (Glycine Max), Hendratno

Masters Theses

The purpose of this study was to determine the variability of resistance to root-knot nematodes (Meloidogyne incognita) in soybeans (Glycine max) induced by seed treatment with ethylmethane sulfonate (EMS).

Two soybean varieties, 'Essex' and 'Forrest,' were chosen as the experimental materials mainly on the basis of their distinct level of resistance; 'Essex' is susceptible and 'Forrest' is resistant. The M₂ and control populations were grown and tested for nematode resistance in the greenhouse. The number of gall developed on the roots was used to indicate the level of resistance.

The frequency distribution of the M …

Nutritional Efficiency Of Angus Cow-Calf Units, Dennis Owen Onks

Doctoral Dissertations

Angus cow-calf pairs were individually fed over a five-year period. Data from 62 mature cows and 114 calves were obtained. Cows varied in initial weight and production potential. Cows were fed grass silage, ad libitum, throughout gestation and lactation. Calves were fed a complete finishing and growing ration post weaning. Efficiency of cow-calf units was defined as the ratio of the yearly TDN intake of the cow plus the pre-and post weaning TDN intake of the calves. Second-order polynomials were fitted through the biweekly efficiency ratios for individual calves and solved to determine the most efficient point. This efficiency was …

Influence Of Dietary Calcium To Phosphorus Ratio On Bone Density Of Vegetarian And Non-Vegetarian Older Women, Teresa Ann Davis

Masters Theses

The purposes of this study were: to investigate the influence of dietary calcium, dietary phosphorus, and their ratios as observed in vegetarian and non-vegetarian subjects on their bone densities and to compare bone density, the dietary intakes of calcium and of phosphorus, and the ratio of calcium to phosphorus in vegetarian and non-vegetarian subjects.

After obtaining informed consent, data were collected on 43 vegetarian and 36 non-vegetarian women, 40 to 92 years old, who consumed self-selected diets. Dietary information was obtained from 7-day dietary records. Dietary supplements were also recorded. Measurements of height, weight, and bone density of the radius, …

Partial Purification And Characterization Of Pectin Methyl Esterase In Southern Peas (Vigna Sinesis), Kun Kook Park

Masters Theses

The purposes of this study were to partially purify pectin methyl esterase (PME) of Southern peas (Vigna sinensis), to determine optimum pH and NaC1 concentration for maximum enzyme activity, to measure the energy of activation and kinetic reactions, and to ascertain the presence of multiple molecular forms of the enzyme and their isoelectric points.

PME was extracted from an acetone powder preparation and purified by a two-step ammonium sulfate fractionation and dialysis. The activity of the partially purified enzyme was significantly (p < 0.05) influenced by pH, NaC1 concentration, and the interaction between pH and NaC1 concentration. The optimum pH and NaC1 concentration were 7.9 and 0.25 M, respectively. The energies of activation were calculated to be 4,900, 5,950, and 6,900 calories/mole at pH 6.0, 7.0, and 7.0, respectively. PME had a K_m of 0.781% pectin N.F. and a V_max of 24.34 PME units.

Additional purification was …

A Status Report On The Okaloosa Darter In Northwest Florida, M. F. Mettee, R. W. Yerger, E. Crittenden

Southeastern Fishes Council Proceedings

No abstract provided.

News Notes, Southeastern Fishes Council

Southeastern Fishes Council Proceedings

No abstract provided.

Comparison Of Methods Of Selection To Increase Yearling Weight Of Beef Cattle And Assessment Of Influence Of Sire Differences On Estimates Of Repeatability Of Cow Productivity, Thomas Bruce Turner

Doctoral Dissertations

The objectives of this study were: (1) to make a theoretical comparison of progress expected by selecting for a single trait with progress expected by selection based on an index including two traits and (2) to compare estimates of repeatability of cow productivity when the effect of sire is removed from the data and when it is not.

Data were collected over a period of seven years from 581 bull calves and 552 heifer calves from the purebred Angus herd at The University of Tennessee Plateau Experiment Station, Crossville.

Variables recorded at weaning (approximately seven and one-half months of age) …

Yield Estimates For The Major Crops Grown On The Soils Of West Tennessee, University Of Tennessee Agricultural Experiment Station, G. J. Buntley, Frank F. Bell

Bulletins

No abstract provided.

The Use Of The Rural Grocery Store As A Food Source In Hancock County, Tennessee, Jo Annetta Schar

Masters Theses

The purpose of this study was to investigate selected environmental factors influencing food purchasers' use of the rural grocery store, the variety of food items available and the variety bought by the food shoppers. Forty-nine food purchasers were interviewed by the researcher. An interview schedule composed of questions concerning food shopping practices and a selected list of food items available in the largest Hancock County grocery store were used.

The rural grocery store in Hancock County serves many of the functions today that are reported in the literature for the early 19th century. Interviews with community leaders and examination of …