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Alterations In Sulfolipid Metabolism In Malathion-Stressed Rats, Gail W. Disney

Doctoral Dissertations

The effects of malathion stress on, inorganic sulfur metabolism in female rats were investigated by extracting macromolecules containing ester sulfate from cellular lipoprotein. Sulfolipid, mucopoly saccharide, nucleotide, and sulfate transfer fraction were extracted from the lipoprotein prepared from five to seven pooled livers from rats fed diets containing 0.42, 0.10, and 0.0002 percent sulfate. Six groups of rats (two groups per diet) were fed the diets for 21 days. Rats were given either malathion in corn oil or only corn oil by stomach tube every 24 hours for three days and were killed on day 21. Lipoprotein was isolated from …

The Wholesome Meat Act And The Tennessee Livestock-Meat Industry, Robert John Hopkins

Doctoral Dissertations

The objectives of this study were: (1) to determine the increases in investment incurred by selected plants in complying with the new inspection regulations, and (2) to determine the change in number and size of the livestock slaughter and processing plants in Tennessee since the passage of the Wholesome Meat Act of 1967 and the Tennessee Meat and Poultry Inspection Act. Certain study plants in the state were selected for close analysis of the improvements that they had to make in order to meet the require-ments of the new inspection programs. A combination of in-plant data and economic engineering data …

Relationship Of Soil Properties To Transformation Of Carbonate Rocks Into Soils, Bobby J. Miller

Doctoral Dissertations

Soils developed from carbonate rocks and having thick, reddish, clayey B horizons occupy extensive areas in parts of the United States. The study was designed to determine some of the physical, chemical, and mineralogical properties of such soils and to evaluate changes that have occurred as a result of weathering of carbonate rock and ensuing devel-opment of soils. Major emphasis was placed on the zone near the soil-rock interface. Three Ultisols and one Alfisol in East Tennessee were selected for the study. The soil series represented were Dunmore, Fullerton, and Talbott. A special sampling technique assured sampling of 'in situ' …

Effect Of Various Growth Regulators On Delaying Development And Increasing Longevity Of Potted Chrysanthemum Flowers (Chrysanthemum Morifolium Ramat), Stephen Albert Black

Doctoral Dissertations

The effect of various growth regulators on the development and longevity of potted chrysanthemum flowers (Chrysanthemum morifolium Ramat.) was studied. Plants were grown on greenhouse benches under conditions favorable for flowering. Five growth regulators at 2 concentrations were applied to plants at 2 stages of flower development: just prior to disbudding when terminal flower buds were 6.0 to 8.3 mm in diameter (stage 1) and when the outer row of flower petals were recurved (stage 5), Applica-tions were made at stage 1 only, at stage 5 only and at both stages 1 and 5. The growth regulators 5-chloro,2-thenyl,tri-n-butyl-phosphonium-chloride (CTBP) and …

The Use Of Stomatal Resistance, Photopigments, Nitrogen, Water Potential, And Radiation To Estimate Net Photosynthesis In Liriodendron Tulipifera L. A Physiological Index, Curtis John Richardson

Doctoral Dissertations

A physiological index is proposed as an indirect technique of estimating net CO₂ exchange. Multiple linear regression analysis is employed to estimate co-efficients in a linear model relating physiological plant variables, site parameters, and dependent responses for tulip poplar (Liriodendron tulipifera L.) seedlings. Objectives were to (1) ascertain which plant and environmental parameters were the most useful in pre-dicting net photosynthesis under varied conditions, (2) determine the amplitudes of physiological processes (photorespiration, diurnal water flux, seasonal pigment development, stomatal resistance, leaf water potential and net CO₂ exchange) which characterize tulip poplar, and might prove useful in a predictive …

Evaluation Of Hardwood Bark As A Growing Medium For Container-Growth (Ilex Crenata 'Hetzi'), Robert John Black

Doctoral Dissertations

The purpose of this study was to evaluate hardwood bark as an organic component of media for container-grown Japanese holly (Ilex crenata 'Hetzi'). The evaluation included the effect of species of bark, particle size of bark, and ratio of bark to media on the growth of Japanese holly. The bark was treated with polyvinyl alcohol to determine its effect on the rate of decomposition and possible toxic effects of the different species of bark. The evaluation included plant responses and laboratory analyses of the plant material and media. The growth responses measured were: fresh weight, dry weight, percent dry weight, …

A Comparative Study Of Phenolics In Chestnut (Castanea), And Their Relationships With Resistance To Endothia Parasitica, Paul Edward Barnett

Doctoral Dissertations

American chestnut (Castanea dentata Borkh.) was a highly valued forest species in the Appalachian region prior to introduction of the chestnut blight fungus (Endothia parasitica (Murr.) A. & A.), which practically eliminated it. Since no control method has been devised and oriental species and hybrids are not generally satisfactory replacements, breeding resistant individuals through selection offers some hope of reestablishment. A chemical method for screening resis-tant individuals for retention in a breeding program would be of great benefit. Since phenolic compounds have been implicated in disease resistance of some cultivated crops and forest and fruit trees, this study is an …

An Analysis Of 1976 Property Tax Potential For Counties In Tennessee, Gerald Vincent Eagan

Doctoral Dissertations

The objective of the study was to evaluate the potential of general property taxes in financing county governments in Tennessee. Specific objectives were to (1) analyze differential rates of change in property tax bases and revenues among the counties and (2) determine the impli~ cations for county fiscal structures and taxpayer burdens inherent in property tax base, property tax revenue, and income trends. The first phase of the analysis involved (1) objective classification of county groups with similar socioeconomic change patterns, (2) statistical evaluation of the groupings, and (3) regression analyses of change relationships among the counties, county groups, and …

An Investigation Of The Variables Affecting Steam Condensation On The Outside Of A Horizontal Tube Bundle, David Martin Eissenberg

Doctoral Dissertations

The accurate prediction of the thermal performance of large multitube steam condensers for application to the distillation desalination of seawater depends on the availability of correlations for calculating each of the film heat transfer coefficients for individual tubes located within the condenser as a function of local conditions. Although correlations are available, there have been few experimental verifications of their accuracy or even of their validity in the specific application to desalination, particularly with respect to the two film coefficients associated with the condensation process, the condensate film heat transfer coefficient and the non-condensable gas film heat transfer coefficient.

A …

The Effects Of Frontal And Septal Ablation On Response Regulation In The Cat, Robert Numan

Doctoral Dissertations

The literature dealing with the behavioral effects produced by ablation of the septum, frontal cortical areas and the hippocampus is reviewed. It is concluded that the medial septum, the dorsolateral frontal cortex (and its analogue in lower forms e.g., gyrus proreus in the cat and precollosal midline cortex in the rat) and the dorsal hippocampus form a nodal point within a larger neuronal system that is involved in response regulation.

A model, describing the response regulatory processes mediated by this fronto-cortical-limbic system is proposed, Motor programs are written in the frontal cortex and temoorarily stored in hippocampal area CA_{3 …}

A Biosystematic Study Of Heterotheca Section Pityopsis, Frank D. Bowers

Doctoral Dissertations

A biosystematic study of the section Pityopsis of the genus Heterotheca was undertaken. Cytological, morphological, chromatographic, and hybridization studies were utilized to provide a basis for taxonomic treatment of the taxa. The species were divided into two broad groups; the Heterotheca graminifolia group (H. adenolepis, H. aspera, H. graminifolia, H. microcephala var. microcephala and var. aequilifolia, and H. oligantha) and the H. pinifolia group (H. falcata, H. flexuosa, H. pinifolia, and H. ruthii) Heterotheca ruthii appears to be intermediate between the two groups and is closely related to H. oligantha.

Cytology indicates the diploid species (N=9) …

N-Utilization By Cattle Fed Rations Consisting Mainly Of Biuret And Low Quality Hay And Factors Affecting N-Utilization By Cattle Fed Urea-Corn Silage Rations, Samuel Winfred Coleman

Doctoral Dissertations

Two successive 7-day total-collection digestion and nitrogen (N) metabolism trials were conducted with beef steers to compare biuret with urea and to determine if other ration constituents influence utilization of N furnished by biuret. Twelve medium grade Hereford steers averaging 221 kg in body weight were allotted to one of the following treatments: 1) urea control; 2) biuret control; 3) biuret-molasses; and 4) biuret-corn. All animals received a basal ration of poor-quality fescue hay and were allowed 42 days to adapt to the NPN source before the start of the first trial. A comparison of the data from the two …

The Relationships Of Feeder Grade, Weight, Subcutaneous Fat Thickness, And Skeletal Size To Feedlot Performance And Carcass Characterisitcs Of Hereford Heifers, Elton Wayne Compton

Doctoral Dissertations

Data from 145 weanling Hereford heifers were used to determine the relationship of feeder grade, weight, fat thickness and measures of skeletal size and shape to feedlot performance and carcass char-acteristics. Data from this group of animals (lOGD Heifers) were also used to derive a more objective method of lotting feeder cattle into outcome groups based on the magnitude of canonical variable index scores. An independent group of 103 Hereford heifers (IT Heifers) were used to test the application of the index scores and outcome grouping technique derived from the lOGD Heifers. Feeder grades were Medium, Good and Choice for …

Progesterone And Estrogen Levels In The Peripheral Plasma Of Non-Bred, Non-Pregnant And Pregnant Cows, David Banks Batson

Doctoral Dissertations

The first objective of this study was to evaluate a radioimmunoassay technique for the assay of estrogen. Secondly, the interrelated changes in the concentrations of progesterone and estrogen were to be determined in peripheral plasma of non-bred, non-pregnant and pregnant Holstein cows. Progesterone was determined by competitive protein-binding. Six hundred twenty-nine blood samples were collected from the jugular vein of 14 lactating cows. Sample collection began five days prior to estrus and continued at daily intervals for 25 days post-insemination. Non-bred cows were bled through one or two cycles. The cows were divided into the following groups: A) non-bred (estrus …

X-Ray-Induced Specific-Locus Mutation Rates In Newborn And Young Mice, Paul Bruce Selby

Doctoral Dissertations

The specific-locus mutation frequency resulting from 300 R of acute X irradiation has been determined for the germ cells present in male mice at 0, 2, 4, 6, 8, 10, 14, 21, 28, and 35 days of age and also for female mice at 0 days of age, Sample size was much larger for the males irradiated on day 0 than for other age groups but in all groups it was large enough to insure that an extremely high rate would be noticed. At 35 days of age the testis is histologically similar to that of the adult. It was …

A Contribution To The Knowledge Of Tennessee Crayfish, Raymond William Bouchard

Doctoral Dissertations

The state of Tennessee has 60 nominal species or sub-species of crayfish within its political boundary or in nearby tributaries that flow into the state. These crayfish reresent five genera. The genera Procambarus and Cambarus are further subdivided into subgenera to show phylogenetic relationships within the genus. Each species is listed under its generic or infrageneric category with the following information: (1) type locality, (2) location of type specimens, (3) range, (4) crayfish associates, (5) life history notes, (6) ecological data, and as needed (7) notes on taxonomic status or information not covered in any of the above six sections. …

Utilization Of Calcium, Phosphorus, Magnesium, Iron, And Protein By Pregnant Women Consuming Self-Chosen Diets With Or Without Vitamin, Mineral Supplements, Jessie Russell Ashe

Doctoral Dissertations

The utilization of calcium, phosphorus, magnesium, iron, and nitrogen in 10 healthy pregnant women consuming self-selected diets was investigated. Seven-day balance experiments, conducted under ordinary home conditions, were spaced periodically throughout the duration of the pregnancy. A multiple vitamin-mineral supplement provided part of the calcium and iron intake of some subjects; others received their total mineral intake from food sources. Seven of the 10 subjects also completed a seven-day balance period within three to 11 weeks post partum.

The calcium intake of pregnant women with a balanced diet including dairy products was sufficient without supplementation of calcium. The magnesium intake …

The Effects Of Dietary Free Radical Inhibitors And Feed Restriction On Age Associated Biochemical Parameter And Lifespan Of Akr Male Mice, Salma Fidaali Halai

Doctoral Dissertations

The effects of dietary free radical inhibitors and of feed restriction on selected age associated biochemical parameters and on life span of AKR male mice were investigated. The control animals (n = 58) were fed a nutritionally adequate basal diet ad libitum; the restricted mice (n = 40) were allowed the basal diet 15 hours out of every 48 hours; the BHT (n = 40) and the vitamin E mice (n = 40) were fed the basal diet containing either 3 meq of butylated hydroxytoluene (0.33%) or dl-α-tocopheryl acetate (0.71%), respectively, per 100 g of feed.

One-half of the …

The Freedom Of Obedience: The Political Thought Of William Tyndale, Bernard Emile La Berge

Doctoral Dissertations

This dissertation investigates the political thought of William Tyndale and its relationship to other important expressions of political thought during the English Reformation. The first three chapters are devoted to a detailed analysis of certain aspects of Tyndale's political thought: his discussion of the origin and nature of authority; his theory of law in its political sense; and his consideration of the problem of church and state. The four remaining chapters of this dissertation clarify the relationship of Tyndale's political thought to the revival of Lollardy; to the thought of one Henrician apologist; to the intellectual current of Renaissance humanism …

Mössbauer Studies Of Electrostatic Hyperfine Interactions In 238U, 236U, And 234U, Joyce Anne Monard

Doctoral Dissertations

The nuclear gamma resonance (NGR) for ²³⁸U, ²³⁶U, and ²³⁴U in the compound (UO₂) Rb (NO₃)₃ has been established at 4.2°K following the alpha decay of PuO₂ sources. The ratios of the electric quadrupole moments of these isotopes have been determined and the electric field gradient at the uranium site has been calculated from the data. The isomer shift in ²³⁴U has been measured for both PuO₂ and PuA1₄ sources and the change in nuclear radius between the excited and the ground state has been calculated.

Yield Probability Evaluations For Summer Annual Forages On Some Tennessee Soils, William Eugene Bryan

Doctoral Dissertations

Experiments were conducted to determine the effects of soil type, moisture regime, and date of planting on the yield and associated charac-teristics of corn silage, corn grown for grain, tall and medium height forage sorghums, and pearlmillet. Early and late plantings of each crop grew on 12 soils (at six locations, 1965-1969) encompassing wide ranges of physical and chemical properties. Irrigation treatments were included in 1969 on five soils at three locations. Corn and sorghum tissue sam-ples were collected at the end of the 1969 growing season and analyzed for total uptake of N, P, K, Ca and Mg. Yield …

The Influence Of William Godwin On The Novels Of Mary Shelley, Katherine Richardson Powers

Doctoral Dissertations

The past few decades have seen a revival of interest in the social philosophy of William Godwin and a revaluation of his works. Although Godwin has been viewed as a powerful influence on the works of Wordsworth, Coleridge, and Shelley, little notice has been taken of his influence on the work of his daughter, Mary Shelley. It has, on the contrary, been popular to attribute Mary's Frankenstein to the influence of her husband, Percy Bysshe Shelley. Many critics have recognized a close connection between the works of Godwin and Mary, but the comments are limited and general; and most studies …

A Geographical Analysis Of The Citrus Industry Of Sao Paulo, Brazil, Robert George Pierson

Doctoral Dissertations

The purpose of this study is to analyze geographically the citrus industry of São Paulo, Brazil. The state of São Paulo is the nation's largest and most efficient citrus producer and is the country's only significant exporter of citrus fruit. Since the establishment of the São Paulo processing industry in 1962, Brazil has become one of the world's most important exporters of frozen concentrated orange juice. Research for the study included field trips to the citrus producing regions of São Paulo and work in numerous libraries in Brazil and the United States. Invaluable assistance was rendered by government officials and …

Thermal Conductivity And Related Properties Of Heated Ground Pectoral Turkey Muscles, Zoe Ann Holmes

Doctoral Dissertations

Thermal conductivity, in association with characteristics of the thermodynamic medium at the food surface, establishes heat flow at the food boundary and reflects the transient properties meat has undergone during temperature change. The purpose of this research was to design and build an apparatus to measure thermal conductivity and to study some of the transient properties of ground pectoral turkey muscles.

Ground turkey pectoral muscles were heated in 9 increments from 77 to 185°F and held at end point temperature for 0 to 15 minutes. Thermal conductivity was calculated directly from data or indirectly by solving for diffusivity and then …

A Study Of The (3He, N) Reaction At 25 Mev, Mark Bentley Greenfield

Doctoral Dissertations

Energy spectra of neutrons from the ¹²C (³He, n)140; ²⁷A1(³He, n)²⁹P; ²⁸Si(³He, n)³⁰S; and ^58,60,62Ni(³He, n)^60,62,64Zn reactions have been measured at 25 MeV incident ³He energy using time-of-flight techniques. An overall energy resolution of about 1 percent for detection of 10-35 MeV neutrons provided accurate determinations of level excitations. Differential cross sections were extracted for many two particle states with up to 10 MeV excitation in the residual nuclei. By varying the beam incident angle and leaving the flight path somewhat …

The Influence Of Strain, Protein Level And Housing Density On Correlations Among Traits Of Laying Hens, Saravanam Srinivasan

Doctoral Dissertations

Data collected during the Twelfth, Thirteenth and Fourteenth Tennessee Random Sample Laying tests (1969-1971) were analyzed by com-puting conventional product-movement coefficients of correlation among production variables for each strain and treatment subclass in each test to determine the magnitude of these relationships. Then various coeffi-cients of correlation between income over feed and chick cost and other production variables for each strain, protein level and cage-density subclass in each test were computed and subjected to tests of homogene-ity. There were strain differences and treatment differences in many of the correlations calculated, as indicated by the tests of homogeneity. It was obvious …

The Comparative Utility Of Structured Lessons, Group And Individually Contingent Events, And Conditioned Reinforcers In Modifying Classroom Behaviors, James D. Long

Doctoral Dissertations

A major purpose of the study was to assess the relative merits of group versus individually contingent consequences in modifying the classroom behavior of adolescents, Other major purposes were to determine whether student conduct would improve with the implementation of structured lessons and to ascertain whether improvements would occur with the awarding of points as a consequence for appropriate behavior without the use of backup reinforcers.

Eight students in an inner-city seventh grade classroom of 32 blacks served as the subjects. They were selected by the teacher as the most disruptive students who were in regular attendance. The eight subjects …

Factors Associated With County Extension Agent Dairy Educational Program Effectiveness In Selected Tennessee Counties, Rural Allen Peace

Doctoral Dissertations

Statement of the Problem: This study was designed to determine the relationship between county Extension workers' effectiveness with the county dairy program and their knowledge of dairying and related subjects in certain Tennessee counties. Next, relationships were to be determined between the foregoing and twenty-four selected independent variables within the following four sub-groups: (1) background and training, (2) county situation, (3) interests and attitudes, and (4) work related.

Dry Matter And Nutrient Dynamics In Red Spruce-Fraser Fir And Yellow Birch Ecosystems In The Balsam Mountains, Western North Carolina, George T. Weaver

Doctoral Dissertations

Introduction: The present study seeks to estimate and compare rates of annual net primary production and flux of four macronutrients in contrasting high elevation Pica rubens-Abies fraseri (spruce-fir) and Betula lutea (yellow birch) ecosystems and to relate variations of net production and nutrient flux to certain site and stand structural parameters. The study was conducted at elevations between 1524 and 1954 meters in the Balsam Mountains of Western North Carolina. Biomass and pools of calcium, potassium, magnesium, and phosphorus were determined in each of five vegetational strata, the forest floor, and the solum. Net production of dry matter and nutrient …

Estimating The Investment Behavior Of Farm Firms Using The Concept Of National Distributed Lag Functions, Billy J. Trevena

Doctoral Dissertations

The purpose of this study was to estimate the investment behavior function of individual farm firms using the concept of rational dis-tributed lag functions developed by Jorgenson to estimate the time structure of the investment process. The fundamental flexible acceler-ator model was used to estimate the investment behavior function. The model assumed net investment to be a lagged function of all changes in desired capital. Desired capital was assumed to be proportional to net farm income and gross farm income, respectively, for the expected profits and accelerator theories of investment. Because of the importance of the proper specification of the …