Digital Commons Network^™

Energetics Of Formate, Lactate, And Pyruvate Metabolism By An Obligate Anaerobic Sulfate-Reducing Bacterium, Desulfovibrio Vulgaris, Edward L. Magee Jr.

Biology ETDs

The increase in growth of Desulfovibrio vulgaris NCIB 8303 in a basal medium containing either 0.1M lactate, 0.1M pyruvate or 0.1M formate was proportional to the energy derived by substrate oxidation. Parameters of growth included OD₅₈₀, counts of viable cells, mean generation time, maximum cell density and molar growth yield. Pyruvate stimulated the largest amount of growth by all parameters except the generation time which equalled that measured for growth on lactate. Lactate produced intermediate levels of growth and formate the least amount. Minimal growth occurred when the basal medium had no intermediate energy source. Growth on the …

Interspecific Territoriality In Williamson's And Red-Naped Sapsuckers (Sphrapicus Thyroideus And S. Varius Nuchalis), Richard C. Young

Biology ETDs

Six territories of Williamson's Sapsuckers (Sphyrapicus thyroideus) and eight of Red-naped Sapsuckers (S. varius nuchalis) were mapped and sampled with a line-strip vegetation sampling technique; these data were subjected to discriminant function and 1·rinciple components analyses to investigate similarities and differences letween territories of the two species.

Interspecific overlap in territorial characteristics is great; differences occur primarily in the number of dead trees, and to a lesser extent in the degree of clumping of aspens (Populus tremuloides); S. Thyroideus tends to nest in areas where aspens are more clumped.

Experiments with playbacks of tape-recordings of calls and drums of the …

Viola Missouriensis Greene, Mary Young

Specimens by Name

No abstract provided.

End Matter, Vol. 20 No. 3

Brigham Young University Science Bulletin, Biological Series

No abstract provided.

Growth Lines In Chione Fluctifraga And Prothaca Staminea (Bivalvia): Precision Of Counting And Comparisons Of Size, Age, Intertidal Location And Taxa, David M. Crabtree

Loma Linda University Electronic Theses, Dissertations & Projects

Because formation of growth lines in the shells of bivalve molluscs is affected by environmental parameters, the growth lines should contain much information about the environments in which the animals live. However, the use of growth lines in ecology· and paleontology is limited by ambiguity in their identification.

Chione fluctifraga and Protothaca staminea were collected, marked, and replanted. C. fluctifraga were grown at three intertidal levels over a vertical range of one meter. In addition, P. staminea were grown at the middle level. All specimens were re-collected after 47 days. Acetate peels of shell cross sections were use for growth …

Mallophaga Of Venezuelan Mammals, K. C. Emerson, Roger D. Price

Brigham Young University Science Bulletin, Biological Series

Seven species of Mallophaga have been previously reported from Venezuelan mammals. In this paper an additional 28 species and subspecies, 7 of which are new, are reported from Venezuela; and 21 other species which have not been previously reported from Venezuela are included because their hosts are found there.

Front Matter, Vol. 20 No. 3

Brigham Young University Science Bulletin, Biological Series

No abstract provided.

The Prairie Naturalist Vol. 7 , Nos. 2 And 3. June-September, 1975

The Prairie Naturalist

VASCULAR FLORA OF EMMONS COUNTY, NORTH DAKOTA ▪ R. P Williams and W. T. Barker

NOTES

Unusual Nesting Site of Barn Swallows ▪ W. A. Buresh

Summer Tanager in Burleigh County, North Dakota ▪ W. A. Buresh

Additional Record of Summer Tanager in North Dakota ▪ J. F. Cassel

Snowy Owl in McHenry County, North Dakota, in May ▪ W. A. Buresh

The Role Of Zinc In Dihydroorotase, Pamela S. Gilchrist

Dissertations and Theses

Dihydroorotase (4,4—dihydroorotic acid amidolyase, EC 3.5.2.3.) which catalyzes the reversible cyclization of N-carbamyl-L-aspartate to L-dihydroorotate has been purified from orotate-grown Clostridium oroticum. The enzyme is stable in 0.3 M sodium chloride and 10 µ ZnSO₄. Sodium dodecyl sulfate gel electrophoresis indicates the enzyme to be composed of two identical subunits each with a molecular weight of 58,000 + 6000. Dihydroorotase is shown to be a zinc-containing metalloenzyme with 2 g atoms of zinc per 58,000 g of protein. The role of zinc in dihydroorotase is discussed.

Kentucky Warbler (Vol. 51, No. 3), Kentucky Library Research Collections

The Kentucky Warbler

No abstract provided.

An Economic Information Program For The U.S. Beef And Pork Sectors, N. A. Aulaqi, J. B. Hassler

Nebraska Agricultural Experiment Station: Historical Research Bulletins

Major objectives of the study were: first, to review present public data programs and to indicate areas of inefficient performance in the production and marketing of beef and pork that still exist under the present data system; second, to simulate an operational information service program for the beef and pork sectors based on programmed solutions for industry allocations and activities; and third, to outline possible implementation procedures for the information service programs and to indicate the role of each of the participants in making it successful.

The Effect Of Altitude On Thyroid Function Of The Uinta Ground Squirrel (Citellus Armatus), Wendell Lee Wells

Theses and Dissertations

Thyroid uptake and distribution of 125I, concentrations of T4 and T3 in serum and thyroids and concentrations of TSH in serum and pituitaries were measured to determine thyroid function of Uinta Ground Squirrels (Citellus armatus) native to 5,400 and 9,000 feet elevations to evaluate alterations in the state of the thyroid due to increased altitude. Uptake of 125I was 60 percent lower by squirrels from 9,000 feet. Incorporation of 125I into T3 was greater at the higher elevation, but absolute thyroid T3 concentrations were similar at both elevations. No significant differences were found in serum T3 concentrations, but squirrels living …

Forestry Report, P. Sims, G. Steneker, K. Fronting, C. Kirby, P. Van Eck, H. Johnson, N. Walker, R. Bohning, L. Carlson, I. Bella, W. Johnstone, R. Waldron, L. Brace

Aspen Bibliography

No abstract provided.

Populations Of Lepomis Auritus (Redbreast Sunfish) In A Thermally Influenced Section Of The James River, Virginia, John Rawls Saecker

Master's Theses

From October 1971 - September 1973, electrofishing was used to collect 1004 specimens of Lepomis auritus (year classes 0 - V) from a thermally influenced section of the James River near Blemo Bluff, Virginia. Collections of fish from the natural and heated water temperature habitats were analyzed as to year classes, season, length and sex.

The Effects Of Topical Nitrogen Mustard On The Pigment System In Pet/Wmr Mouse Epidermis, Ronald Lee Salisbury

Master's Theses

Miniature melanocytes have been observed scattered among the typical melanocytes in the skin of the PET/Wmr mouse strain, They are weakly DOPA reactive and their cell bodies and nuclei are one quarter the size of those in typical melanocytes, Both populations reach a peak during the first postnatal week and then gradually disappear within the following three weeks. The miniatures appear very early and are among the last cells to disappear. During the first postnatal week, their population remains relatively constant against a radically changing population of typical melanocytes. That they may represent a stage in the development of typical …

Melanin In The Longnose Gar, Lepisosteus Osseus, George William Minson

Master's Theses

Examination was made of the melanophores of three Lepisosteus osseus (longnose gar), one dark, one intermediate, and one normal in pigmentation. Melanophore counts were made per mm² from anterior, mid, and posterior areas of both the dorsal and ventral surfaces of each of the three fish. The data were tested with a four-factor analysis of variance. By microscopic examination the melanophores were classified as to branching in the sample areas. Neither number of melanophores nor degree of branching explained divergence in pigmentation. However, divergence was attributed to the melanosome color and concentration in the melanophores.

Effects Of Hypobaric Hypoxia On Serotonin In Mouse Brain, Jacob Dale Peuler

Masters Theses

No abstract provided.

Physical And Chemical Properties Of Outdoor Beef Cattle Feedlot Runoff, C. B. Gilbertson, J. R. Ellis, J. A. Nienaber, T. M. Mccalla, T. J. Klopfenstein

Nebraska Agricultural Experiment Station: Historical Research Bulletins

Within the past decade, emphasis has been placed on the quality of our environment. Beef cattle feedlots have been singled out as a significant source of environmental pollution. Environmental protection provided by control facilities requires basic knowledge of the physical and chemical properties of feedlot runoff. This bulletin summarizes studies of physical and chemical properties of beef cattle feedlot runoff completed from August, 1968 through December, 1972.

Nutrition Education For The Elderly, Laurie Manahan

Loma Linda University Electronic Theses, Dissertations & Projects

Abstract not included.

Introduction

This paper examines the topic of nutrition education for the elderly. Only within the past decade has proper nutrition been recognized as making a major contribution to the health and well-being of the elderly. This recognition of the importance of nutrition in the later years has led to the recent establishment of many nutrition programs for the elderly. As nutrition education is seen as an important tool in improving the nutritional status of the elderly, many of these now programs include nutrition education components.

Part One of this paper discusses the relationship between nutrition and aging. …

The Effects Of Certain Steroids On The Growth Of Slime Mold, Physarum Polycephalum, Ching-Bun Paul Chen

Theses and Dissertations

The cortex of vertebrate adrenal glands secretes two major groups of hormones--glucocorticoids and mineralocorticoids. Glucocorticoids, which have an oxygen atom at carbon number 11, increase the rate of gluconeogenesis and increase the mobilization of lipids in mammals (Turner and Bagnara 1971). At the same time there is a decrease in protein synthesis. This latter effect may be homologous to a decrease in fibroblast growth in culture in the presence of certain corticosteroids (Ruhmann and Berliner 1965). The main function of mineralocorticoids, on the other hand, is to retain sodium ions. They have little or no gluconeogenic activity. Interestingly, however, these …

Timpanogos Flora, Kelly W. Allred

Theses and Dissertations

A comprehensive floristic study of Mt. Timpanogos, Utah County, Utah, was undertaken. The Mt. Timpanogos area is a much used facility in recreation, biology, watershed development, livestock management, and education. It is also representative of a major segment of the overall flora of Utah. This study adds to the ever-increading knowledge of the flora of Utah, and provides a means of identifying the flora of this region, which is basic to any future management.

The Effect Of Lead And Zinc On Selenium Poisoning In Mice, Cynthia Joy Call

Theses and Dissertations

Trace elements, because they are effective in catalytic amounts, must be held in delicate balance with each other as well as with the macronutrients of the diet. Disturbances of these balances result in deficiency and toxicity symptoms. Toxic doses of selenium, lead, and zinc, for example, are known to cause anemia (1, 2, 3, 4) and growth depression (5, 3) in experimental animals.

The Isolation And Partial Structure Identification Of A Polar Glycosphingolipid Of Rabbit Blood, Michael B. Shubeck

Masters Theses

No abstract provided.

The Effect Of 900 Hz And 1200 Hz Audible Sound On The Germination And Development Of Seeds Of Oats, Wheat And Cucumber, Augustina Gyimah

Masters Theses

No abstract provided.

The Role Of The Suprapharyngeal Ganglia In Regulation Of Oxidative Metabolism In The Intestinal Mitochondria Of Lumbricus Terrestris, Raymond H. Fetterer

Masters Theses

No abstract provided.

Habitat Partitioning In A Community Of Passerine Birds, Robert C. Whitmore

Theses and Dissertations

Habitat partitioning was studied in a community of passerine birds in the Virgin River Valley of southwestern Utah. Ten habitat structure variables were measured for each of 24 species of passerine birds and several multivariate statistical techniques were used to determine the extent of habitat partitioning. Ordinations of species distributions along known environmental gradients were constructed using Principal Component Analysis and Stepwise Discriminant Analysis. Stepwise Discriminant Analysis was also used to determine which habitat variables were important in species separation. It was found that percent canopy cover was the most important variable. Two hundred seventy six pairs of species were …

Analysis Of Macroinvertebrate Samples From Ten Rocky Mountain Streams, Fred A. Mangum

Theses and Dissertations

This study was an attempt to evaluate the effects on ten Rocky Mountain streams from management activities on U.S. Forest Service lands. Macroinvertebrate and water chemistry data were collected. Data analysis methods included: three diversity indices, a numerical taxonomy system of multivariate statistical analysis, numbers and biomass per selected taxa, percent composition per order, and total numbers and biomass. None of the methods of analysis were found to be adequate if used alone, but by using a combination of dendograms, biomass, and numbers data in addition to the diversity indices (SCI and d) stream stress could be detected. Although organic …

Effect Of Salinity On Glycogen Content In The Brine Shrimp, Artemia Salinas, Of Great Salt Lake, Christon H. Merkley

Undergraduate Honors Capstone Projects

The brine shrimp, Artemia salinas, is one of the few organisms to be found in the hostile environment of the Great Salt Lake. Salt concentrations in the lake are found to exceed those in the oceans. In such an environment, the utilization of energy, even after it has been procured, presents a problem. The life inhabiting the lake has developed extraordinary adaptations to this and similar problems.

Electron micrographs produced by Dr. Nabil Youssef of Utah State University have revealed that unusual quantities of glycogen can be found in the muscle of brine shrimp taken from the Great Salt Lake. …

Biochemical Description Of A Lava Tube Lake In Southeast Oregon, John Edward Palmer

Dissertations and Theses

A Pleistocene lava tube cave in southeast Oregon has a seasonally fluctuating lake occupying the last 1200 to 2000 feet. Three endemic invertebrate species inhabit the lake: Kenkia rynchida Hyman; Asellus sp.; and Stygobromus hubbsi Shoemaker. Little is known however, about their environment. The purpose of this study was to describe various physical and chemical parameters of Malheur Cave Lake.

Contributions To The Knowledge Of The Mydis (Crustacea) From The Tanzanian Waters, Mihai Bacescu

Tanzania Journal of Science

This is the first study on Mysids from the Tanzanian coast waters, in which, on the basis of material captured by himself, the author deals with some species belonging to the subfamily of Gastrosaccidae and Mysinae. Of the about 20 species identified so far in the collected material, five are new, namely: Gastrosaccus  msangii n.sp.; Anisomysis kunduchiana n.sp.; Tenagomysis tanzaniana n.sp.; Anisomysis sirielloides n.sp. and Mysidopsis coralicola n.sp. and six others are new to the area. Ecological and ethological data concerning all species mentioned are given.