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The Effect Of Cesium-123 On Cesium-137 Uptake By Tissues In The Laboratory Rat, Richard Riley Tokarz

Biology ETDs

The effects of stable cesium-133 on cesium-137 metabolism were studied to better define mechanisms of cesium transport and binding by rat tissues. The extent to which the hypothetical cesium transport system can be overloaded was examined by giving cesium-133 and cesium-137 intraperitoneal injections within short time intervals. Whole animal and isolated tissue counts were made with a small animal whole body counter. Stable cesium-133 (0.02 g per animal) injected from 3 minutes to 24 hours prior to cesium-137 (0.15 ml containing 0.24 µCi per 100 g body weight) had little effect on the uptake of cesium-137 by tissues. Expressing data …

Studies Of Diet As A Factor In 137-Cesium Metabolism In Rats, Morris Burton Snipes

Biology ETDs

Effects of diet on ¹³⁷Cs retention and distribution in the rat were examined. After a 7-day period, retention of an intraperitoneal dose of ¹³⁷Cs was higher than control values for rats fed semistarvation, high carbohydrate, high protein, and high fat diets. Relative distribution of ¹³⁷Cs among tissues .was examined considering changes in tissue composition due to diet variation. The primary effect of diet on cesium metabolism was a modification of cesium excretion via urine and feces. There appeared to be a direct relationship between mass of fecal material and the amount of ¹³⁷Cs excreted in feces. …

Spring Bird Tabulation Here Lists 294 Wablers, 19 Species, Jessie Maye Smith

Jessie Maye Smith Birds and Watchers Columns Collection

No abstract provided.

Three Volumes Describe Wildlife, Jessie Maye Smith

Jessie Maye Smith Birds and Watchers Columns Collection

No abstract provided.

A Study Of The Extent Of Spread Of Infestation, Effects, And Possible Control Of The Tent Caterpillar In Lewis County, Kentucky, Edna Mae Love

Morehead State Theses and Dissertations

A thesis presented to the faculty of the Graduate School at Morehead State University in partial fulfillment of the requirements for the Degree of Master of Arts by Edna Mae Love on May 22, 1968.

Rain Don't Dampen Bird-Watcher Spirit, Jessie Maye Smith

Jessie Maye Smith Birds and Watchers Columns Collection

No abstract provided.

The Specific Suppression Of The Primary Immune Response By Passive Administration Of Mouse Antibody Fractions, Catherine Spain Safford

Biology ETDs

The primary immune response can be specifically suppressed by the passive administration of the homologous antibody close to the time of the primary antigenic stimulus. Although the mechanism of this antibody-mediated suppression of the immune response has not yet been elucidated, it is known that both ϒM ( (19S) and ϒG (7S) antibodies can function as inhibitors, ϒG antibodies being approximately 100 to 200 times more effective than ϒM antibodies. In mice and in several other animals the ϒG antibody has been further separated into two subclasses, designated 7Sϒ₁ and 7Sϒ₂ globulins. These two classes are distinguished by …

Family Saves Home In Face Of Intruders' Savage Attack, Jessie Maye Smith

Jessie Maye Smith Birds and Watchers Columns Collection

No abstract provided.

Dispersal Of Mites Within Apple Trees Of An Abandoned Orchard In Central Utah, Eugene Eldon Nelson

Theses and Dissertations

From January to July, 1967, a study of dispersion and distribution characteristics of Typhlodromus mcgregori Chant, Bryobia praetiosa Koch, and Bryobia rubrioculus (Scheuten) was made in an abandoned apple orchard in Highland, American Fork, Utah and in the laboratory at Provo, Utah. Bryobia praetiosa overwintered on the spurs and the other protected sites and with the advent of spring migrated out of the tree and back onto the cover crop. Coinciding with the movement of B. praetiosa out of the tree was the hatching of winter eggs and maturation of B. rubrioculus primarily on the spurs but as far down …

Birds Have Their Charms And Lend Much To Wimberly, Jessie Maye Smith

Jessie Maye Smith Birds and Watchers Columns Collection

No abstract provided.

Improvement Of Beef Cattle Through Breeding Methods. Summary Of Results From Regional Project Nc-1, Larry V. Cundiff, Keith E. Gregory

Nebraska Agricultural Experiment Station: Historical Research Bulletins

This publication is a revision of North Central Regional Publication 120, published by the Nebraska Agricultural Experiment Station (Research Bulletin 196) in July, 1961. It summarizes the more important results from this project during its first 19 years of operation. It is by no means complete and includes only what is considered to be the "highlights" of findings at this time. A bibliography of all publications that provided the basis for this summary statement is included. This publication is in the nature of a progress report on many aspects of beef cattle breeding research. Although it is based on considerably …

Kentucky Warbler (Vol. 44, No. 2), Kentucky Library Research Collections

The Kentucky Warbler

No abstract provided.

A Serological Estimate Of Monzygotic Twinning In Sheep, William D. Stansfield

Biological Sciences

No abstract provided.

Extraction Of Rennet From Fresh Frozen Vells, Neil Harvey Clarke

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

A method was developed for the extraction of rennet from fresh frozen vells. Frozen vells were partially thawed and minced in a Hobart "Wonder worker." The tissue was treated with 2.0 per cent potassium alum and allowed to stand for 20 hours before sufficient 0.45 M disodium phosphate was added to bring the pH of the mixture to 5.7. Dry sodium chloride was added until the salt concentration in the moisture of the mixture was 10 per cent. The tissue was then mixed with 3/4-inch pumice gravel in a volume ratio of 1 to 2 and packed into extractor columns. …

Linear Programming Applied To Sheep Ranching In Utah, William R. Flint

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The study was initiated to determine how sheep ranches were physically and economically organized in 1964 and to select range and livestock management alternatives which would be profitable to sheep ranches. With data collected from the ranches three model ranches, representing the three most prominent strata, were constructed. These strata were determined by number of breeding ewes that were on the ranch and by the season of grazing on government land, i.e., winter, summer, or year around. After the building of these three ranches, each of them was linear programmed to find the profit maximizing combination of resources both before …

Consumer Attitudes Affecting The Use Of Fluid Milk Products In Metropolitan Salt Lake City, Wayne N. Monson

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

A survey of 360 respondents in metropolitan Salt Lake City was made to determine their attitudes about fluid milk products and the affect of these attitudes on consumption levels. The fluid milk products studied were regular whole milk, two percent milk, skim milk, and nonfat dry (powdered) milk.

The respondents had the most positive attitudes about regular whole milk. Their attitudes about the other three products were highest for those which most nearly resembled regular whole milk. The consumption levels of the four products followed the same pattern.

The respondents' attitudes about four attitude parameters affected their consumption levels. Those …

Ultrastructural Investigations Of Powdery Mildew Of Rose Caused By Sphaerotheca Pannosa (Wallr.) Lev, Ani Clipper Watene

Theses and Dissertations

The purpose of this study was to evaluate the ultrastructural aspects of the host-pathogen relationship between the fungus Sphaerotheca pannosa (Wallr.) Lev. and a susceptible horticultural variety of floribunda rose "Eutin". Attention was given to the penetration of hyphal tubes, and their subsequent development into: haustorial elements in epidermal cells of rose. In addition, changes in the morphology of infected epidermal cells were described. Thin sections of rose leaves infected with S. pannosa were examined in a Hitachi electron microscope, model HS-7, after glutaraldehyde-acrolein fixation, OsO4-uranyl acetate staining, and embedding in Epon plastic. The components of S. pannosa haustoria consisted …

Local Distribution In A Population Of Uinta Ground Squirrels, Robert Edgar Walker

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

In an attempt to describe, explain, and show the demographic significance of annual variations in the nesting distribution of Uinta ground squirrels, a study was conducted during the summers of 1964 through 1967 in northern Utah. Procedures included both trapping and direct observation.

It was found that females tended to nest in open, previously inhabited, grassy areas. Males resided throughout a variety of habitats.

This typical nesting distribution was established initially in the summer by juveniles shortly after they first appeared aboveground. The extent to which the distribution was maintained the following spring depended largely upon the number of female …

Studies On The Levels Of Acetylcholine In The Brains Of Thiamine-Deprived And Thiamine-Antagonized Rats, Darwin Leroy Cheney

Theses and Dissertations

Thiamine deficiency has been reported to cause nerve degeneration in the peripheral nervous system and hemorrhage with associated cellular damage in the central nervous system (Prickett, 1934). Koedam (1958) observed convulsions in thiamine-deficient pigeons, but convulsions have only rarely been seen in rats (Gubler, 1961). Rats treated with the thiamine antagonist, pyrithiamine (PTh)* always develop ataxia and convulsions but these neurological symptoms have never been reported in those treated with oxythiamine (OTh), another thiamine antagonist (Gubler, 1961). Hosein, Chabrol, and Freedman (1966) concluded that neurological symptoms occur only when the brain thiamine content is diminished to 2.5%o r less of …

Elevational Occurrence Of The Ticks Dermacentor Andersoni And Dermacentor Parumapertus In Utah County, Utah, William J. Despain

Theses and Dissertations

Considerable research on ticks has been done since it was discovered that the Rocky Mountain wood tick, Dermacentor andersoni Stiles, was a principal vector of Rocky Mountain spotted fevero Additional disease agents of man are also transmitted by D. andersoni. This tick and a closely related species, Dermacentor parumapertus Neuman, occur commonly in Utah. The two species are often closely associated, although D. andersoni is believed to occur in the mountains, whereas D. parumapertus is in the desert valleys. Diseases affecting animals in nature are transmitted by ticks of both species. Consequently, any interaction between the two may be influential …

The Effects Of Force Feeding On The Levels Of Pyruvate, Glucocorticoids And Glucose In The Blood And On Adrenal Weight In Thiamine-Deprived And Thiamine-Antagonized Rats, Ronald Adams Bitter

Theses and Dissertations

The discovery of a substance in rice polishings that was useful in preventing beriberi was first shown by Grijns and Vedder (Wuest, 1962). In 1926, Jansen and Donath (Wuest, 1962} crystallized this substance which was subsequently synthesized independently by Williams and Cline (1936} and Grewe (1936). This substance was named thiamine by Williams (1936) because of its structure having the vital thiazole ring and because it was an "essential amine."

A Taxonomic And Ecological Survey Of The Algae Of Lilly Lake, Ann C. Palmer

Theses and Dissertations

A taxonomic and ecological survey of the algae of Lilly Lake in the Uinta Mountains, Utah, was carried on from June 1967 to November 1967. The lake is a typical acid bog lake with an average pH range of 4.5 to 6.9. Extremes of pH in the alkaline range were present due to additional factors. Algae identified included 96 genera and 208 species. These were found in many different types of microenvironmental niches. The main factors which limited the algae to definite areas of the lake were pH, water temperature, light available, and type of substrate. The predominant algal genera …

The Distribution Of Overwintering Arthropods In A Sheep Pasture In Utah County, Utah, Richard Frank Ashley

Theses and Dissertations

The parasitic mites on mammals living in the chaparral community of Utah are practically unknown ecologically. Keegan (1953) was the first to publish on parasitic mites from Utah. He listed mites of 12 species and 9 genera from Tooele and Juab counties from hosts which included one Peromyscus truei, five P. crinitus, and 20 P. maniculatus. Brennan and Beck (1955) published on the chiggers of Utah and included a key to 38 species. Allred (1954, 1956, 1957, 1958) studied the geographical distribution, seasonal occurrence, and biology of mites found on mice of the genus Peromyscus in Utah.

5 Β- Pregnane- 3Α- 20Α- Diol Excretion In Urine Of University Women During The Menstrual Period, Rita Shin-Hui Liao

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Five normal healthy young university women while on self-chosen diets and living under normal conditions served as experimental subjects in this study. Urinary pregnanediol was measured for 10 days of the menstrual cycle. Meal frequency (3 meals vs. 2 meals with no breakfast) was also included in the study.

A modification of the method of Eberlein and Bongiovanni on thin layer chromatography was used to determine pregnanediol in the urine sample.

Urine pregnanediol excretion was in the pattern as investigated by other workers. The values rose in the latter half of the menstrual cycle, and fell prior to the onset …

A Biosystematic Study Of The Genus Aconitum (Ranunculaceae) In The Intermountain Region, Rex Cates

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

This study dealt with the Intermountain aconites of which the chromosome number of n = 8 was obtained.

The bumblebees, Bombus rufocinctus Cresson, B. appositus Cresson, and B. centralis Cresson, are the major pollinators of the allogamous and autogamous aconites.

Two-dimensional thin layer chromatography of cauline leaf extracts showed that the Intermountain aconites studied here consist of one chemical group.

The overall evidence indicates that the Intermountain aconites consist of one species, Aconitum columbianum Nutt., with two varieties, variety columbianum and variety ochroleucum A. Nels.

Distribution And Ecology Of The Desert Bighorn Sheep In Southeastern Utah, Lanny O. Wilson

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

In May 1965, the first investigation and research in the native desert bighorn sheep in Utah was undertaken. The study was centered in the White Canyon area, San Juan County, in southeastern Utah. Seven other areas along the Colorado River were found to have smaller reminant populations of desert bighorns.

The White Canyon population was determined to be between 124 and 144 desert bighorns (Ovis canadensis nelsoni), excluding lambs.

The desert bighorns in southeastern Utah return from surrounding range lands each year to the same areas, known as lambing grounds, to give birth to their lambs. Ewes under …

The Secondary Benefits Of Irrigation Water: An Economic Appraisal, Erik Bruce Godfrey

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The secondary or external benefits of increasing the availability of water for irrigation and changing the allocation of an existing water supply was analyzed from a theoretical point of view.

"Input-output" models for Cache County, Utah, and for the state of Utah were used to indicate the intersectoral relationship of water used by agriculture and other sectors in each economy.

The indirect value of water used by agriculture in Cache County was estimated. A method that extended the procedure used in this thesis was proposed that could be used to estimate the value of water in ether sectors. A "water …

Comparisons Of Phytoseiid Predator Populations In Sprayed And Unsprayed Apple Orchards In Cache Valley, Utah, Yeboa A. Dodoo

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

A comparative study of phytoseiid populations was made of two well-cultivated and regularly sprayed apple orchards with two unsprayed orchards in Cache Valley, northern Utah.

Two phytoseiid species, Typhlodromus mcgregori Chant and T. occidentalis Nesbitt were observed on the apple leaves, under the bark, and occasionally in the litter and soil. Amblyseius cucumeris (Oudemans) occurred in the soil and litter and occasionally under bark. T. mcgregori was dominant in the unsprayed orchards, and T. occidentalis in the sprayed.

Of the phytophagous mites, which served as food for the phytoseiids, the two-spotted mite, Tetranychus urticae Koch was dominant. Other phytophagous mites …

Effects Of Range Plant Foliage Removal On Soil Moisture Regime At Two Elevations In Central Utah, John C. Buckhouse

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

During 1966 and 1967, a range plant clipping study was conducted at two locations in central Utah's Ephraim Canyon. It was found that extreme clipping treatment resulted in a significant increase in soil moisture due to a presumed decrease in transpiration during 1967. At the lower location, 7,100 feet elevation, a difference of 5.4 inches over a 5 foot soil profile was noted between the extreme and control clipping treatments in 1967. At the upper location, 10,000 feet in elevation, a savings of 3.6 inches soil moisture was observed over the 5 foot soil profile in 1967. Other clipping intensities …

Occurrence And Distribution Of Invertebrates In Lower Logan River, Nancy A. Erman

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

A study of bottom invertebrates on the lower Logan River, Logan, Utah was conducted from June 1966 to July 1967. One objective was to evaluate on a qualitative and quantitative basis the invertebrate populations above and below a sewage entry in the river. Another objective was to study the year-round fluctuations in the invertebrate population.

The greatest variety of invertebrates was found in the summer. Chironomidae and Baetis were the only two groups found in abundance over the entire year.

Populations were reduced during autumn when water levels rose, and they declined even more sharply during the spring flood.

At …