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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 …

Comparative Hematology During Deficiencies Of Iron And Vitamin A In The Weanling Rats, Cing-Ya Chiao

Masters Theses

The purpose of this investigation was to determine the effect of feeding male, weanling rats diets which were deficient in both vitamin A and iron on hematologic parameters.

The hematologic parameters which were measured were hemoglobin concentration, hematocrit values, red blood cell counts and cellular morphology of the blood smears as well as the level of iron stored in the liver.

In the first experiment, it was found that rats with iron and vitamin A deficiency, not only had higher hemoglobin and hematocrit values as well as higher red blood cell counts. They also had higher levels of iron in …

An Evaluation Of Control Techniques For The European Wild Hog (Sus Scrofa) In The Great Smoky Mountains National Park Of Tennessee, James Ronald Fox

Masters Theses

The present study was conducted within the Tennessee portion of the Great Smoky Mountains National Park. The major objectives of this study were to evaluate techniques currently being utilized by the National Park Service for the control of the European wild hog (Sus scrofa) and possibly formulate improved methods of control.

From February, 1971, through February, 1972, a monthly program of live trapping and direct reduction was conducted within the Great Smoky Mountains National Park. Five types of live traps were evaluated. Three methods of direct reduction of free-roaming wild hogs were also evaluated. In addition to the …

The Effects Of Performance, Economy Of Gain And Carcass Quality Of Slaughter Heifers Fed Three Levels Of Crude Protein Using Two Sources Of Additional Supplementation, Phillip Michael Smith

Masters Theses

The purpose of this experiment was to test the effects on per-formance, economy of gain and carcass quality of slaughter heifers when grown and fattened on a urea-limestone treated corn-silage ration in which the daily crude protein intake per head was 1=7 to 1,8, 1.9 to 2.0 and 2.1 to 2.2 lbs, and to test for any difference between cotton seed meal and urea as an additional supplemental source. In addition to corn silage ad libitum each animal received 6.0 lbs of concentrate per day during a 140-day roughage phase to provide three different levels of protein. Ration 1 consisted …

A Long-Term Storage Study Of Canned Red And Green Bell Peppers, David Wayne Adkins

Masters Theses

This research project was designed to determine the effects of long periods of storage at two temperatures on the composition and quality of canned bell peppers (Capsicum annuum L.)-

One lot each of canned red and canned green bell peppers were obtained at the beginning of the 1970 packing season. Two similar lots were obtained at the beginning of the 1971 packing season. Each of these lots were divided into two storage groups. One group was stored at 75°F, and the other group was stored at 100°.

The stored peppers were analyzed periodically to measure changes in the peppers' quality …

A Study Of Optimun Resource Use On Part-Time Farms In The Brown Soil And Delta Areas Of Tennessee, James A. Atchison

Masters Theses

The purpose of this study was to determine net returns that could be earned by labor and management on part-time farms in West Tennessee. Alternative part-time farm situations used in the study were chosen as representative of the Brown Soil and Delta Areas of Tennessee. Representative farms of 70, 150, and 225 acres each with labor supplies of 1030, 1446 and 1755 hours per year were used in the analysis. In addition to these base situations, two interest rate levels were used and options were considered for acquiring of additional acreage and/or disposing of part or all of the current …

Some Factors Affecting Hydration And Texture Of Four Varieties Of Dried Beans, Phaseolus Vulgaris L, Chang Lim Yoou

Masters Theses

Great Northern, Navy, Light Red Kidney, and Pinto varieties of beans were used to study the effect of moisture modification on hydration, texture, and "butterflying" of dried beans for processing. Pinto and Light Red Kidney varieties were used to study the effect of hydration in solutions of amylase, cellulase, and pectinase enzymes on water absorption and texture of dried beans. Moisture absorption by dried beans during conditioning and soaking was directly related to intial moisture content. By exposure to saturated humidity for 48 hours, the impermeability of low moisture beans was reversed. Firmness of soaked beans was found to be …

Influence Of Selected Factors On Level Of 4-H Participation By Seventh, Eighth And Ninth Grade Boys And Girls In Bledsoe County, Tennessee, Joe Fayette Nichols

Masters Theses

This study was concerned with the problem of decreasing 4-H members at the seventh, eighth and ninth grade or junior high level. Data were collected from all seventh, eighth, and ninth grade boys and girls in Bledsoe County, Tennessee who were present on the day the inter-views were conducted in each school. A total of 289 interview schedules were used in the analysis. For the purposes of analysis, data from the 289 boys and girls were classified into two groups according to the level of participation in 14 selected 4-H events and activities while they were 4-H members. There were …

Problem A: Characteristics Of Knox County Beef Producers And Their Farms; Problem B: Management Practices Of Knox County Beef Producers; Problem C: Factors Influencing Beef Management Practice Adoption By Knox County Beef Producers, Clyde N. Taylor

Masters Theses

PROBLEM A: CHARACTERISTICS OF KNOX COUNTY BEEF PRODUCERS AND THEIR FARMS

This study was conducted in Knox County, Tennessee for the purpose of determining selected characteristics of beef producers and their farms. The study was based on a survey-type interview and reflects information for developing a county plan of action. The producers were interviewed and then classified in low, medium and high groups, depending on the number of pounds of beef sold per cow in 1970. Main comparisons were between high and low categories.

Major findings indicated that cattlemen interviewed in Knox County had the following characteristics: (1) 71 percent …

Myoglobin Content And Color Of Raw Pork Loin Roasts As Affected By Freezing At Two Rates, Jane Shellabarger Nocito

Masters Theses

Longissimus dorsi and psoas major muscles from fresh and frozen paired pork loin roasts were evaluated for myoglobin content and color reflectance. One of each paired roast was analyzed fresh and the other analyzed after freezing and thawing. Myoglobin in the thaw drip from frozen roasts was measured, also. Two freezing rates were tested: fast freezing in an air blast freezer at -27° to -29°C and slow freezing in a home freezer at -18°C. Roasts were stored for 28 days before thawing.

Myoglobin in the longissimus dorsi was significantly (P < 0.001) lower than in psoas major muscle. Less myoglobin (P < 0.05) was found in fresh than frozen thawed roasts; but there was no difference (P > 0.05) in myoglobin content associated with freezing rate. Apparently, myoglobin …

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 …

The Relative Costs Of Returnable Versus Disposable Milk Containers To The Retailer, Joe T. Davis

Masters Theses

No abstract provided.

Factors Influencing Blount County, Tennessee Home Demonstration Club Members' Use Of Consumer Credit, Ethel Josephine Neas

Masters Theses

This study was concerned with the use of consumer credit by Home Demonstration Club members in Blount County, Tennessee, as a basis for planning educational programs. Data were secured by group inter-views from 237 Home Demonstration Club members, representing 24 clubs, who were present at their regularly scheduled club meetings. For purpose of analysis, data from the 237 Home Demonstration Club members were classified according to HDC members use of consumer credit: (1) HDC members who were using consumer credit; and (2) HDC members who were not using consumer credit. Of the 237 Home Demonstration Club members 162 were using …

Four-H Leadership Inservice Training Needs Of Tennessee County Extension Agents, Marifloyd Hamil

Masters Theses

In this study the self-perceived training needs of Tennessee County Extension Agents were compared with the training needs as per-ceived by the district supervisors in the areas of adult and junior leadership training. Factors considered in this study were: (1) super-visory district, (2) sex, (3) percent of time devoted to 4-H work, and (4) years of tenure with the Tennessee Extension Service. Questionnaires were completed by 345 Tennessee county Extension agents and by 15 district supervisors on 11 adult and 6 junior leader-ship training needs. The data collection instrument was developed by The University of Tennessee Agricultural Extension Education Department …

Physiological And Economic Evaluation Of Gross Efficiency In First Lactation Jerseys, Roy Darrell Holder

Masters Theses

Feed intake and production data on 226 first lactation Jerseys fed either an all forage or a forage plus grain ration were analyzed to determine the variation in gross efficiency during portions of the lactation, and to evaluate the association among several measures of economic efficiency.

Gross feed efficiency (FCM/TENE) was highest for cows on the all forage ration, but showed a steady decline throughout the lactation for cows on both rations. Maximum gross efficiency was attained during the first lactation period (1-70 days), and the most rapid decline in gross efficiency occurred from the first to the second period …

The Protective Effect Of Mycorrhizae Common In East Tennessee On Loblolly Pine (Pinus Taeda L.), Richard H. Martin

Masters Theses

Six loblolly pine stands in East Tennessee were surveyed for fungi possibly mycorrhizal with loblolly pine. Fifty-three species of fungi Were collected and identified including Boletus brevipes, Boletus luteus, Cenococcum graniforme, Laccaria laccata, and Pisolithius tinctorius which have previously been shown to be mycorrhizal with loblolly pine. Pure cultures of twelve of the collected species were obtained and tested in synthetic culture with loblolly pine. Agaricus placomyces, Amanita rubescens, Amanita yerna, and Boletus bicolor entered into mycorrhizal relationships with loblolly pine.

Five mycorrhizal fungi, Amanita rubescens, Boletus bicolor, Cenococcum graniforme, Laccaria laccata, and Pisolithius tinctorius, were assayed in plate antagonism …

Soil Bank Tree Plantations And Owner Attitudes In Nine Southeast Tennessee Counties, Spencer Douglas Boardman

Masters Theses

The Soil Bank plantations in nine east Tennessee counties were investigated to determine current status, survival and growth, and landowner attitudes. The attitudes included reasons for participating in the Program and benefits considered worthwhile. An economic evaluation was also made of some of the forestry alternatives currently open to land owners .

A 62 percent mail return revealed that only 11 percent of the tree plantation acreage had been cut. Of the acreage cut, land use changed to 30 percent pasture, 19 percent crops, and 40 percent not in use. Farming was the principal occupation of 41 percent of the …

The Effects Of Blood Preparation For Radioimmunoassay And Competitive Protein Binding Assay On The Stability Of Progesterone And Estrogen Concentrations, Vaughan A. Wenzel

Masters Theses

Competitive protein binding (CPB) assay for progesterone and radioimmunoassay (RIA) for estrogen were used to evaluate the effects of various blood handling techniques from the time of collection to assay on the stability of progesterone and estrogen concentrations in blood. Eight 40 ml samples were collected consecutively in polycarbonate centrifuge tubes from the jugular veins of eight cows and subjected to various treatments. Treatments consisted of collecting samples in pre-cooled heparinized (1000 U/ml) tubes maintained in an ice bath, centrifuging immediately (2400 rpm for 30 minutes) and storing the plasma fraction at -15°C; and collecting samples in heparinized or non-heparinized, …

Field Studies Of Selected Pathogens For The Control Of The Corn Earworm, Heliothis Zea Boddie, W. Robert Tilyard Jr.

Masters Theses

Tests conducted at the University of Tennessee were designed to compare the control results of the corn earworm by three different pathogens and a standard chemical insecticide. Also, some methods of application were tested. The pathogens tested were a bacterium, Bacillus thuringiensis Berliner, a nuclear polyhedrosis virus specific for Heliothis zea, and the nematode, DD-136.

The treatments were applied under field conditions directly to the ears of corn.

The results indicated that general effectiveness is based on how accessible the pathogens are to the earworm larvae. Best control was accomplished by a treatment using a virus-nematode combination. That treatment …