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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 …

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.

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 …

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.

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 …

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 …

Inhibition Of Planarian Regeneration, Douglas Pierre Bingham

Theses and Dissertations

This thesis describes my study of inhibition of brain regeneration in planaria. The flatworm (Dugesia tigrina) possesses a remarkable ability to regenerate lost parts, including the head. The primary objective of my study was to determine the extent to which an inhibiting substance, located in the head, would prevent regeneration of the brain. A secondary objective was to study whether DMSO (Dimethyl Sulfoxide) would facilitate the action of the inhibitor.

Fall And Winter Population Study Of The Macro-Invertebrate Fauna Of Lincoln Beach, Utah Lake, With Notes On Invertebrates In Fish Stomachs., Ralph Buckly Brown

Theses and Dissertations

Due to the inconveniences associated with under ice population studies, most aquatic population studies are made during the spring, summer, and fall seasons. Like most lakes little is known about the fall and winter popu-lations of the Utah Lake invertebrates. The purpose of this study is to classify, determine quantitative fall and winter population fluctuations, and obtain life history and ecological information of the macro-invertebrates at . Lincoln Beach, Utah Lake. This lake is the largest, natural occurring body of fresh water in the state and has a high potential for the production of gamefish and water-fowl. As Smart (1960) …

Nesting Ecology And Behavior Of The Golden Eagle In West Central Utah, Franz J. Camenzind

Theses and Dissertations

The Golden Eagle Aquila chrysaetos canadensis Linn. is facing extinction in much of its range. In the Western Hemisphere its numbers are restricted primarily to the mountainous regions west of the 99th meridian, from extreme northern Alaska to northern Mexico (Hobbie and Cade, 1962) and from timberline in Colorado to below sea level in Death Valley, California (Summer, 1929a).

The Ecology And Life History Of Sceloporus Occidentalis Longipes Baird On Rainier Mesa At Nevada Test Site, James Mark Hopkin

Theses and Dissertations

The study was undertaken to learn the life history of Sceloporus occidentalis longipes and its environmental adaptations on a high plateau (Rainier Mesa) with an elevation of 2,286 meters, at the Atomic Energy Commission's Nevada Test Site in Nye County, Nevada. The lizards emerge from hibernation in April with the males preceeding the females by a period of one to two weeks or more. Mating occurs in late April, May, and perhaps early June. Eggs are laid between 10 June and 15 July. Clutches of 9 to 15 eggs are laid with the younger females usually laying 9 eggs. No …

Overwintering Sites And Winter Mortality Rates Of Certain Predaceous Mites In Central Utah Orchards (Phytoseiidae: Typhlodromus), John Wayne Leetham

Theses and Dissertations

The overwintering habitats and winter mortality rates of predaceous mites (Phytoseiidae: Typhlodromus) were investigated during three successive winters, 1965-66, 1966-67, and 1967-68. Three species were predominant in derelict apple orchards, Typhlodromus mcgregori Chant on twigs and spurs and rough bark of scaffold limbs and trunk, Typhlodromus occidentalis Nesbitt on rough bark of scaffold limbs and trunk, and Amblyseius cucumeris Oudemans in ground cover. Other species (Typhlodromus columbiensis Chant, Typhlodromus caudiglans Schuster, Amblyseius fallacis (Garman), Amblyseius ovatus (Garman), Amblyseius floridanus (Muma), and Amblyseius rosellus Chant) were collected only incidentally. Substantial numbers of T. mcgregori and T. occidentalis were found to fall …

Factors Influencing Production Of Flower Stalks In Agropyron Cristatum (L.) Gaertn, Neil C. Frischknecht

Theses and Dissertations

A study was made of factors that influence production of different numbers of flower stalks of crested wheatgrass on grazed and ungrazed areas. Both laboratory and field studies were made. Greatest response in flower stalk production resulted from application of nitrogen in the field, amounting to an increase of from 5 to 10 times the numbers of flower stalks on untreated areas. Responses of plants in the greenhouse supported these results. Plants grown in the dark indicated that higher carbohydrate reserves existed in ungrazed than in grazed plants. It was concluded that a high carbohydrate-low nitrogen balance was the primary …

Vegetational Changes In A Mountain Brush Community Of Utah During Eighteen Years, Robert J. Eastmond

Theses and Dissertations

This vegetational analysis is concerned with changes which have cocurred since 1949 in a mountain brush community within an exclosure in the central Wasatch Mountains. The exclosure, established in 1949, is located in Pole Canyon on lower Provo Canyon. Two major studies have been conducted previously, but it has been nine years since the last intensive work was done. Several major changes occurring during the eighteen year period are evident and are described.

Field Observations And Laboratory Studies On Growth And Tillering In Seedlings Of Oryzopsis Hymenoides As Affected By Selected Environmental Factors Of The Sand Dunes Of Lynndyl, Utah, Leopold B. Smigelski

Theses and Dissertations

Seedlings of Indian rice grass Oryzopsis hvmenoides (Roem. & Shult.) Ricker. were studied to determine the effect of soil moisture, photoperiod, depth of burial of germinated grains, temperature, and the rate of soil accumulation on seedling growth and tillering. The study was performed in two phases: Field observations and laboratory studies. Field observations were made on a system of sand dunes located northwest of Lynndyl, Utah. General observations were made from January, 1966 to May, 1968.

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 …

A Study Of The Channel Catfish, Ictalurus Punctatus (Rafinesque), In Mud Lake, Utah, Horst Friedrich Siewert

Theses and Dissertations

From June to November 1967, a study on channel catfish, lctalurus punctatus (Rafinesque), in Mud Lake, Utah Co., Utah was undertaken. The objectives were (I) to estimate if channel catfish are increasing or decreasing in Mud Lake, (2) to estimate the mean size of adult channel catfish in Mud lake, (3) to determine which environmental factors effect the catch of channel catfish, and (4) to determine if the channel catfish in Mud lake are residents year round. A total of 310 mature channel catfish and 920 carp were collected with four hoop nets. Two fingerling were captured by seining. Ratios …

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 …

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. …

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 …

Some Phage Associated Properties In Salmonella Potsdam, Thomas B. Seifert

Loma Linda University Electronic Theses, Dissertations & Projects

The non-lysogenic strain and several lysogenic strains of S. potsdam were tested biochemically and antigenically to detect any possible phage related property.

Fermentation reactions and citrate utilization tests were identical for all strains.

Tubes agglutination tests showed the non-lysogenic and lysogenized strains of SP2-S to be similar, and different from the naturally lysogenic strains SP3, SP4, SP9, and SP10. Absorption tests confirmed the SP2-s strains, either non-lysogenic or lysogenized, to possess an additional antigen SP3 and SP4 did not possess. SP9 and SP10 may contain small amounts of this antigen. From variation may explain the antigenic difference between these strains. …

Complementarity Between The Deoxyribonucleic Acid Of Bacteriophage P4/2 And That Of Its Naturally Lysogenic Host Salmonella Potsdam Strain 4, Londa Liseli Schmidt

Loma Linda University Electronic Theses, Dissertations & Projects

Complementarity studies were conducted between bacteriophage P4/2 DNA and the DNAs of its naturally lysogenic host Salmonella potsdam strain 4 (SP4) and its sensitive host Salmonella potsdam strain 2 (SP2). Calf thymus DNA was used as a control.

Nitrocellulose membranes were used to adsorb varying concentrations of unlabeled DNA, using P4/2 DNA, SP4 DNA, SP2 DNA, and calf thymus DNA. A constant amount of P³² -labeled P4/2 DNA was added to each membrane and the hybrids were allowed to form. After thorough rinsing to get rid of unbound labeled DNA, radioactivity of the samples was read in a liquid …

Osteological And Myological Comparisons Of The Head And Thorax Regions Of Cnemidophorus Tigris Septentrionalis Burger And Ameiva Undulata Parva Barbour And Noble (Family Teiidae), Don Lowell Fisher

Theses and Dissertations

There has long been a need for a comparative study of the osteological and myological structures of the reptilian family Teiidaeo This present study is organized to increase our understanding of the anatomical features of the head and thorax regions of two members of distinct phylogenetic branches of the family Teiidaeo The two genera discussed are Cnemidophorus and Ameiva.