Life Sciences Commons^™

A Study Of The Relationship Between The Sugar Content Of Enzyme Converted Starch And Pick Values Of A Coated Sheet, David A. Mrochek

Paper Engineering Senior Theses

The purpose of this experiment was to convert starch by the use of enzyme. The conversion was carried out in a way to produce variations in the reducing sugar contents of the cooked starch. These starches were then applied as the adhesive in a coating mixture. Draw downs were made using the variety of coatings and then the sheets were tested for surface strength. The IGT Pick Tested was used. It was hoped that a definite relationship between sugar contents and pick values could be obtained. This, however, was not the case and the experiment would have to be considered …

Nutrition Field Observations And Experiences With The Florida State Board Of Health, Bettie Chapman Hawkins

Masters Theses

This report describes and analyzes the observations and experiences of the student during eight weeks of field training with the Division of Nutrition in the Florida State Board of Health. The purpose of the training was to supplement the academic education in public health nutrition at The University of Tennessee and the previous background of the student. The experience was designed to increase her understanding of the function of the Institutional Nutrition Consultant in the total public health program in a state agency.

Through selected readings, conferences, and a planned orientation, data were obtained on the State of Florida; the …

An Ecotypic Differentiation Of Human And Bovine Fecal Streptococci, With Application To Human Pollution In The Yakima River, Harlen Harvey Johnson

All Master's Theses

It was the purpose of this study to report on the development of a technique for distinguishing human fecal streptococci from bovine fecal streptococci, and to make application of this technique in describing some of the sources of pollution in the Yakima River as contributed by the Wilson Creek drainage system, in the Ellensburg area of Washington.

A Study Of The Effect Of Fiber Length Distribution On The Tear Strength Of A Synthetic Fiber Sheet, Kit Funderburk

Masters Theses

No abstract provided.

Ecological Determination Of The Hour Of Nest Opening By An Ant, A. Dwight Smith

Loma Linda University Electronic Theses, Dissertations & Projects

The timing of daily opening of the nest entrance by the red harvester ant Popnomyrmex californicus was studied during all four seasons. Multiple regression analysis of several , environmental variables shows that the variation from day to day in mean opening time can be attributed to temperature differences, with the time that a given temperature was reached being the most important single variable for the autumn days studied. An equation incorporating this and the minimum temperature was sufficient to specify the mean opening time to within a few minutes. For the spring days, it was necessary to combine sunrise time …

Dietary Supplementation Of Tarhana With Soya Bean Flour And Fish Protein Concentrate, Tahire O.K. Merdol

Masters Theses

Protein malnutrition is a problem in a major portion of the world where good quality protein sources are in short supply and expensive. Extensive studies have been carried out in order to improve the protein quality of certain existing foods which may be more abundant in a given community.

In this study the protein quality of a Turkish soup, tarhana, was determined by measuring its Net Protein Utilization (NPU), Diets containing tarhana were fed to rats at a level which gave 10 percent protein. The effect of supplementing tarhana with either soya bean flour or fish protein concentrate on the …

Membrane Bound Dehydrogenase Enzymes And Related Electron Transport Systems In Acetobacter Aceti Var. Liquefaciens: Their Induction And Pleiotropic Nature, John C. Rakoczy

Masters Theses

No abstract provided.

Effects Of The Mutants Brown And Brown-Dominant On Pteridine Content In Drosophila Melanogaster, Donald M. Evans

Biology ETDs

The pteridine content of a brown, a brown-dominant, and a wild stock of Drosophila melanogaster was studied. The separation by ascending two-dimensional chromatography of the pteridine substances revealed differences in the number and quantity of pteridines present in these stocks. Differences also were found between pteridine content of heterozygotes and the corresponding homozygotes. The dominance and recessiveness, as reflected in eye color, did not extend to the level of pteridine metabolism, and pteridine substances were found in some heterozygotes that were not present in either homozygous parental stock.

131i Metabolism In The Beagle Dog As Affected By Age And Route Of Exposure, Robert E. Foreman

Biology ETDs

Seven parameters were chosen to characterize¹³¹I metabolism in the Beagle, three were derived from the thyroid uptake -retention curve [maximum thyroid uptake, time to 90% maximum uptake, and biological half-life] and four from the two component whole-body¹³¹I retention curve [component intercept values, and component half-times]. These parameters were used to compare ¹³¹I metabolism in three age groups [6 , 18 , and 48 months], each consisting of six Beagles exposed to a single dose of ¹³¹I [ 100-300 µCi] by the inhalation route. An analysis of variance was performed on each parameter in this …

The Effect Of Pregnancy And Lactation On The Iodine Compounds In The Tissues And Plasma Of The Rat, Harry Jay Lyons

Theses and Dissertations

An isotopic equilibrium method was employed, based on the chronic feeding of an 125I-labeled diet of known specific activity, to determine the distribution and quantitation of endogenously labeled iodine-containing compounds in the female rat at various periods during gestation and post-parturition. A decrease was associated with gestation in the total iodine, which was significant in all extrathyroidal tissues except the brain and muscle, and a fall in thyroxine concentration which was significant in all extrathyroidal tissues except the heart. The triiodothyronine level decreased from the control values in gestation but not as consistently. There was also a significant decrease in …

Effect Of Cis-Trans Isomers And Related Physical Properties Of Monounsaturated Lipids On Shortening Power, Aneta Joyce Ostrander

Doctoral Dissertations

The effect of cis-trans isomers on the shortening power of lipids was investigated. Lipid samples studied included: a commercial vegetable oil (control), oleic acid, elaidinized triolein, two samples in which elaidinized oleic acid was substituted at different levels for oleic acid, and two samples in which elaidinized triolein was substituted at different levels for triolein. Breaking strengths of plain pastry wafers were used for estimating the shortening power. Melting point, surface tension, interfacial tension and viscosity measurements were made on the lipid samples. Lipid composition analyses included gas-liquid and thin-layer chromatography.

Except at the 100 percent level of substitution, wafers …

The Dispersion Of Titanium Dioxide In Paper, Michael James Gallagher

Paper Engineering Senior Theses

It has been recognized in the past that certain means of dispersing titanium dioxide in paper yielded better results. An optimum dispersion is one that results in the best optical efficiency of the pigment in the sheet.

In an attempt to pinpoint the optimum conditions the following facts were revealed. Increased mechanical action on the stock slightly increases the brightness and opacity. Pigment addition to higher consistency stock increases brightness and opacity considerably. The alum agglomerated impurities of soft water slightly increase opacity and decrease brightness in unpigmented papers; do not appreciably change the optical properties of pigmented sheets. Untreated …

Experimental Zoogeography Of Islands, Daniel Simberloff, Edward O. Wilson

Doctoral Dissertations

A technique for insular defaunation utilizing methyl bromide fumigation was evolved. Seven islands in Florida Bay, of varying distance and direction from potential zoogeographic source areas were censused exhaustively. The small size (45 ft. diameter) and ecological simplicity of these islands, which consist solely of red mangrove (Rhizophora mangle) trees with no supratidal ground, allowed the determination of all resident species. The completeness of the censuses was corroborated by chloropicrin fumigation. The breeding land fauna of these islands is composed almost exclusively of terrestrial arthropods, with 20-50 species usually present. Surveys of these taxa in the Florida Keys, with emphasis …

The Effect Of Avitaminosis E On The Incorporation Of 35S-Sulfate By Rat Tissue Sulfolipids, Brenda Pearl Todd

Masters Theses

The relationship between the sulfation of brain and liver sulfolipids was investigated by comparing the fixation of a test dose of ³⁵S-sulfate by the sulfolipid fractions of brain and liver from rats fed vitamin E-deficient and -sufficient diets. Brain and liver tissue was divided into particulate and soluble fractions and the sulfolipid fraction extracted from each with chloroform-methanol. Following purification of the sulfolipid fractions by dialysis, the radioactivity in each fraction was determined by liquid scintillation.

The data obtained showed a statistically significant decrease in ³⁵S-sulfate uptake by the brain particulate sulfolipid in those animals fed a vitamin …

Nutrition Field Experience With The Division Of Indian Health, Oklahoma City Area, Wanda Lee Dodson

Masters Theses

The topics for investigation were the organization and programs of the Division of Indian Health in the Oklahoma City Area and the role and responsibilities of a public health nutritionist. A field experience of eight weeks was designed for the student to observe and participate in the activities of the Division of Indian Health in the Oklahoma City Area and in the Talihina Service Unit. Data were collected through conferences, interviews, observations, visits, and readings.

The Division of Indian Health in the Oklahoma City Area provides preventive, curative, and rehabilitative services to approximately 73,000 Indians living in the states of …

Comparative Osteology Of Black-Capped And Carolina Chickadees, Sharon Olson

Masters Theses

No abstract provided.

Flavonoid Chemotaxonomy Of Cacalia (Compositae), Paul Ernest Goldenbaum

Masters Theses

No abstract provided.

The Effects Of Exercise On The Response Of Rats To Air Blast., Kabby Mitchell Jr.

Biology ETDs

The mortality of rats exposed to the combined effects of air blasts and exhaustive exercise was investigated. Five hundred rats were ex­posed to sharp rising air blasts of 300 to 400 msec durations in a shock tube after which 250 rats were swum at different times and for varying periods post blast. There were 250 blast controls and 95 swim controls.

In the primary experiment, rats were swum to exhaustion begin­ning 15 min after exposure to graded levels of air blast. In the three other series of experiments, animals were swum to exhaustion at 5 min after blast; swum to …

The Accumulation And Retention Of Radiophosphorous By Escherichia Coli, Douglas Gunnison

Masters Theses

No abstract provided.

Nesting Ecology Of The Great Horned Owl Bubo Virginianus In Central Western Utah, Dwight Glenn Smith

Theses and Dissertations

Information was collected on the nesting ecology of the Great Horned Owl, with particular emphasis placed on aspects of its population and distribution, territoriality and predation. The study was conducted for the two years, 1967 and 1968 in the Thorpe and Topliff hills of central western Utah. Nesting densities on the study area were .36 pairs per square mile in 1967 and .40 pairs per square mile in 1968. Nests averaged one mile apart and were distributed in the periphery of the hills, overlooking the desert valleys. Favorite nest sites were cliff niches, but abandoned quarries and junipers were also …

The Development Of The Embryo Sac In Ranunculus Glaberrimus Hook, Chung-Ping Chin

All Master's Theses

A comparative study of embryological and morphological characters of the ovule in the family Ranunculaceae indicates that considerable variation exists within this family.

The Administration And Practice Of Public Health Nutrition In The Arkansas State Department Of Health, Agnes Willoughby Hinton

Masters Theses

This report provides an analysis of the student's experiences during eight weeks of field training with the Nutrition Service of the Arkansas State Department of Health. The purpose of this field experience was to supplement the student's academic training in Public Health Nutrition. The experience was designed to help the student strengthen her philosophy and understanding of public health by introducing her to the following aspects of an official health agency: (1) the practice of public health at the state and local level, (2) the administrative organization of public health nutrition, and (3) the practice of public health nutrition.

The …

Field Experiences With The Division Of Nutrition In The Florida State Board Of Health, Martha Hansard Roach

Masters Theses

This report is based upon observations and experiences during eight weeks with the Division of Nutrition in the Florida State Board of Health. The purpose of the field training was to supplement academic training in public health nutrition at The University of Tennessee and to complement concurrent field experiences in Knox County. A varied program of experiences aided the student in her study of nutrition activities in official health agencies. Information was obtained on history, organization, and programs of the Florida State Board of Health and the Division of Nutrition through selected reading, conferences, conversations, and observations, in addition to …

Response Of Small And Large Rib And Round Beef Roasts Of Two Degrees Of Finish To Two Rates Of Heat Application, Barbara Hammer Bayne

Masters Theses

Eighty roasts consisting of paired small and large, bone-in rib and boneless top-round cuts from five low-finish and five high-finish Hereford steers were studied. One cut from each pair was roasted at 200^oF and the other at 300^oF to end points of 152^o and 158^oF respectively, according to a balanced-lattice design. Tenderness, juiciness, and flavor were evaluated by a trained taste panel. An objective measurement of tenderness was obtained with the Warner-Bratzler Shear. Cooking loss and cooking time were determined also.

Cuts roasted at 200^oF had lower total cooking losses, longer …

Natural Variation In Abies Of The Southern Appalachians, John F. Robinson

Masters Theses

Determinations were made of several foliage, seed, and cone characteristics from material collected throughout the ranges of Abies fraseri in high elevations of Tennessee, North Carolina, and southern Virginia; Abies balsamea var phanerolepis in West Virginia and northern Virginia; and Abies balsamea from its southernmost distribution in Pennsylvania and southern New York.

Natural variation was investigated to determine relationships among these taxa, especially with reference to possible hybridity of A. balsamea var phanerolepis in West Virginia and northern Virginia. Much variation was found among species groups among stands within groups. Variation patterns suggested sampling from a north-south cline. Stand values …

Thrips Of The Sagebrush-Grass Range Community In West-Central Utah, Ward Max Tingey

Theses and Dissertations

Three predominant and economically important shrubs of the sagebrush-grass range community in Utah, namely big sagebrush (Artemisia tridentata Nutt.), rubber rabbitbrush (Chrysothamnus nauseosus (Pall.) Britt.), antelope bitterbrush (Purshia tridentata (Pursh) DC), and a widely re-seeded range grass, crested wheatgrass (Agropyron cristatum (L.) Gaertn.) were sampled during the summers of 1966 and 1967, and yielded twenty species of thrips. Three species (Anaphothrips tricolor Moulton, Chirothrips aculeatus Bagnall, Chirothrips simplex Hood) were new distributional records for Utah. Seven species (Frankliniella n. sp. #1, Frankliniella n. sp. #2, Haplothrips n. sp., Leptothrips n. sp., Oedaleothrips n. sp., Sericothrips n. sp. #1, Sericothrips n. …

Observations And Experiences With The Nutrition Services, Jefferson County Department Of Health, Birmingham, Alabama, Joanne Riggins Mounger

Masters Theses

The writer spent eight weeks with the Jefferson County Department of Health, Birmingham, Alabama for field experience in public health nutrition. This report is based upon the observations and experiences of the writer during this period of time.

The purpose of the field experience was to supplement the academic program with practical experiences. The field experience helped the writer better understand the functions of an official health agency and the role of a public health nutritionist within the agency. The writer observed and participated in the nutrition program within the health department as well as with community agencies and professional …

Field Observations And Experiences In The Division Of Nutrition, St. Louis County Health Department, Ann Jensen Rhode

Masters Theses

This thesis describes and analyzes the student's eight weeks of field training in the Division of Nutrition of the St. Louis County Health Department. It has an established nutrition unit that provided the student with appropriate background experience for her future role as a public health nutritionist.

The field experience gives the student in public health nutrition an opportunity to work with allied health personnel under supervision and to apply the theories and principles of public health learned during the academic year to the practice of public health nutrition in the community. The experience was designed to strengthen the student's …

Biophysical And Biochemical Properties Of Salmonella Potsdam Bacteriophage P3/2, James D. Kettering

Loma Linda University Electronic Theses, Dissertations & Projects

Addition of KH₂P0₄ salts to Fraser’s Medium produced higher titers of Salmonella potsdam bacteriophage P3/2, but it failed to maintain stable titers under normal cold storage conditions. The addition of ethylenediaminetetraacetate (EDTA) to the medium also produced high titers and helped to maintain phage viability indefinitely in storage. The presence of KH₂P0₄ with the EDTA did not increase the titers nor better the storage properties and was discontinued in favor of EDTA alone. This provided for the accumulation of the necessary amounts of P3/2 for DNA studies.

The phage P3/2 adapted well to purification …

Scorpions Of Utah, John D. Johnson

Theses and Dissertations

Scorpions from Utah were collected and studied to determine species present, geographic distribution, seasonal occurrence, sex ratio, and some morphological variations associated with distribution. Nine species were identified--Anuroctonus phaeodactylus, Centruroides sculpturatus, Hadrurus arizonensis, H. spadix, Vejovis becki, V. boreus, V. confusus, V. wupatkiensis, and an undescribed species of Vejovis, subgenus Paruroctonus. Five species--C. sculpturatus, H. arizonensis, V. becki, V. confusus, and V. wupatkiensis--are reported from Utah for the first time. Most specimens were collected from May through October, with greatest numbers taken in May, June, and July. Sex ratios differed with the species. Two species--A. phaeodactylus and V. boreus--showed statistically …