Digital Commons Network^™

Neurally Induced Cardiac Dysrhythmias, Gilbert Hageman

Dissertations

No abstract provided.

Lipid And Protein Energy Utilization In Starved Bluegill Sunfish (Lepomis Macrochirus), Nancy H. Siemon

Master's Theses

No abstract provided.

The Effect Of Calcium Sulfide On The Hactchability Of Chironomous Riparius Meigen Eggs, Gerald S. Wegner

Master's Theses

No abstract provided.

The Effect Of Nematode Age On Trap Formation In The Nematophagous Fungus Arthrobotrys Conoides, Mary Lou Tortorello

Master's Theses

No abstract provided.

The Effects Of Language On The Mediation Of Temporally Based Concepts With Deaf And Blind Children, Gregory Doyle

Master's Theses

No abstract provided.

The Development Of An Electron Capture Gas Chromatographic Method For The Assay Of Catecholaldehydes In Tissues, Balbir Kaur Dhaliwal

Master's Theses

No abstract provided.

Effect Of Glucose And Phosphate On Growth Of The Dermatophyte Trichophyton Mentagrophytes, Miriam L. Greenberg

Master's Theses

No abstract provided.

Relative Densities Of Sympathetic Nerve Terminals In Dog Right Atrium, Caryl Jean Coglianese

Master's Theses

No abstract provided.

Thermal And Hypoxic Induced Alterations Of Selected Red Cell Organophosphates In The Female Fresh-Water Turtle, Pseudymys Scripta Elegans, Daniel Culking

Master's Theses

No abstract provided.

Parasitic Copepods Of Chinook, Oncorhynchus Tshawytscha (Walbaum), And Coho, Oncorhynchus Kisutch (Walbaum), Salmon Of Lake Michigan, Joseph K. Buttner

Master's Theses

No abstract provided.

The Teratogenic Potential Of Sodium Dodecylbenzene Sulfonate Upon Icr Cd-1 Strain Of Mice, Raymond M. David

Master's Theses

No abstract provided.

Cuticular Amino Acids In Dirofilaria Immitis, Bonnie Anne Ozuk

Master's Theses

No abstract provided.

Distribution And Effects Of Bacterial Endotoxin, Anne Carter Adams

Theses and Dissertations

In this study the distribution and effects of bacterial endotoxin were examined. Adult male BALB/c and adult male DUB/ICR mice were used in all experiments. Endotoxic activity of a number of strains from three genera of bacteria, Pseudomonas, Bacteroides, and Listeria, was detected using vincristine-treated mice as sensitized indicators for endotoxin and resistance to purified endotoxin induced by pretreatment with selected bacteria. Also, the effect of bacterial endotoxin and endotoxin-like substances on the course of primary amebic meningoencephalitis in mice, caused by Naegleria fowleri, was assessed.

Food Habits Of The Game Fishes Of Lake Anna, Virginia, Thomas Kenneth Rohrer

Theses and Dissertations

Beginning in May, 1973 and continuing through August, 1974 the food habits of several species of game fishes from Lake Anna, Virginia were investigated via gut content analysis. A variety of collecting methods were employed to secure specimens for examination and stomach contents were reported as percent frequency of occurrence. A total of one hundred and two collections were made yielding 287 largemouth bass, Micropterus salmoides (Lacépède); 166 chain pickerel, Esox; niger LeSueur; 53 bluegill, Lepomis macrochirus Rafinesque; 32 pumpkinseed, Lepomis gibbosus (Linnaeus); and 63 black crappie, Pomoxis nigromaculatus (LeSueur). It was found that M. salmoides and E. niger were …

Germination Ecology Of Three Chihuahuan Desert Crucifers, Larry L. Bell

Dissertations and Theses @ UNI

Seeds of Lepidium lasiocarpum Nutt., Lepidium medium Greene var. medium, and Descurainea pinnata (Walt.) Britton ssp. ochroleuca (Woot.) Detling, native to the Chihuahuan Desert, were tested for their germination responses under conditions of constant and fluctuating temperatures, light and dark sensitivity, and different seed depths in soil. The effects of a three day drying period alternating with one day of moisture at field capacity was also investigated. All three species germinated optimally under fluctuating temperatures with low temperatures near 5-10°c and high temperatures near 20-25°C. L. lasiocarpum seeds responded better to fluctuating temperatures of 15°c magnitude than to fluctuations of …

Germination Of Prairie Forbs Liatris Aspera Michx. And Amorpha Canescens Pursh, Lewis Marshall Churbuck

Dissertations and Theses @ UNI

Seed of Liatris aspera and Amorpha canescens were hand collected from the Mark Sand Prairie in Eastern Iowa during the fall of 1973 and 1974. There was no significant difference in the viability between one and two year old seed with both species. There was no significant difference in the total germination at 21 C for L. aspera and A. canescens. A. canescens required a significantly longer period of time for the two year old seed to germinate. The most rapid, regular and complete germination of L. aspera occurred at 21 and 27 c. significantly reduced at 16 and 32 …

Cinemicrography Of Selected Parasites Of Fishes And Of Free-Living Stages Of Haemonchus Contortus, Stephen Homer Hilton

Theses and Dissertations

Two 16 mm color films were made to help fill a general need for instructional motion pictures in the area of Parasitology. One film "Haemonchus contortus, a Sheep Stomach Worm," deals with a nematode parasite of sheep, showing all stages of its external development and including a time-lapse sequence of the embryonation of the egg. The other film, "Some Parasites of Freshwater Fishes," shows six parasites; Ichthyophthirius multifiliis, Cotylurus erraticus, Dactylogyrus sp., Lernaea cyprinacea, Trichodina sp., and Diplostomum spathaceum for the first time in motion pictures. The films were photographed through a Wild dissecting scope and a Reichert Universal Camera …

Comparative Foraging Behavior Of The Olive Warbler And Its Possible Competitors, Robert J. Secatore

Biology ETDs

The foraging activities of the Olive Warbler (Peucedramus taeniatus) and three other foliage-gleaning species were studied in the Chiricahua Mountains of southeastern Arizona during the summer of 1973. Grace's Warblers (Dendroica graciae), the most specialized of the four species, foraged most similarly to Peucedramus and is probably the latter is strongest potential competitor during the breeding season. The small size of D. graciae appeared to facilitate foraging in pine foliage and may be an important factor in promoting ecological segregation from the Olive Warbler. Audubon's Warblers (D. coronata) and Pygmy Nuthatches (Sitta pygmaea) were more generalized in their feeding activities …

Toxoplasma Antibodies In Wild And Domiciled Animals From Arizona, Colorado, Montana, New Mexico, And The Philippines, Alan A. Marchiondo

Biology ETDs

Using the Sabin-Feldman Dye Test, sera from wild and domestic animals in Arizona, Colorado, Montana, New Mexico, Peru, and the Philippines were tested for the prevalence of antibodies to Toxoplasma gondii. The incidence of Toxoplasma in all animals from these areas was: Arizona (19.6%, 11 of 56), Colorado (28.6%, 2 of 7), Montana (41.7%, 73 of 175), New Mexico (31.3%, 178 of 569), Peru (0%, 0 of 3), and the Philip­pines (33.8%, 48 of 142). The overall prevalence of antibodies to Toxoplasma was 32.7% (312 of 952).

Nine fecal samples from wild felines contained Toxoplasma like oocysts which were experimentally …

Role Of Melatonin In Hibernation And Isolated Heart Activity, Dennis L. Palmer

Biology ETDs

Melatonin functions in the control of melanophore pigmentation of amphibians but its role in higher vertebrates is ill-defined. In mammals melatonin is produced within the pineal gland, where its formation is light dependent. This study consisted of three experiments: (i) a biological assay of commercial preparations of melatonin; (ii) response of hibernating ground squirrels exposed to cold and melatonin; (iii) response of isolated hearts to melatonin. Commercial preparations of melatonin were compared for their biological effectiveness by measuring the inhibition of compensatory ovarian hypertrophy in laboratory mice. Unilateral ovariectomy results in hypertrophy of the intact ovary of untreated mice. Unilaterally …

Life History And Ecology Of The Great Basin Sagebrush Swift, Sceloporus Graciosus Graciosus Baird And Girard, 1852, Gary L. Burkholder, Wilmer W. Tanner

Brigham Young University Science Bulletin, Biological Series

No abstract provided.

End Matter, Vol. 19 No. 5

Brigham Young University Science Bulletin, Biological Series

No abstract provided.

Ozonation Of Secondary Effluent For Color Removal, Michael Patton

Paper Engineering Senior Theses

The purpose of this study was to determine the effect of various ozone concentrations when applied to secondary kraft effluent in regards to color removal. The influence of effluent temperature upon the color removal capabilities of ozone was also investigated to determine the optimal ozone reaction temperature or the temperature which would result in the greatest color reduction at a given ozone concentration.

The study was conducted by injecting ozone at three different concentrations of 20, 30 and 40 mg/liter into a temperature controlled column of secondary kraft effluent obtained from S.D. Warren Company in Muskegon, Michigan. The temperature was …

Effect Of "Stressors" On Corticosteroid-Binding Globulin Activity In The Rat During Pregnancy, Muhammad Nasir Hussain

Masters Theses

No abstract provided.

The Prairie Naturalist Volume 6, Nos. 3 And 4. September-December 1974

The Prairie Naturalist

A BIOLOGICAL SURVEY OF KRAFT SLOUGH ▪ G. L. Krapu & H. F. Duebbert

CHRISTMAS BIRD·COUNTS FOR NORTH DAKOTA - 1974 ▪ R. N. Randall

USE OF SMALL FENCES TO PROTECT GROUND BIRD NESTS FROM MAMMALIAN PREDATORS ▪ A. B. Sargeant & A. D. Kruse

BOOK REVIEW: Finding Birds in Minnesota ▪ E. M. Welter

Treatment Of The Hyperventilation Syndrome, Hans Von Brauchitsch

Henry Ford Hospital Medical Journal

A review oi the literature on the hyperventilation syndrome reveals a variety of treatment approaches and a virtual absence of controlled studies of this common problem. Attempts to treat the condition by changing the respiratory pattern through mechanical means can be traced back to the first century A.D. The "paper bag method" of treatment has many psychological drawbacks and is often unsuccessful. Several avenues of drug treatment have been explored: acidifiers, minor tranquilizers, antidepressants, and stimulants. Reports of success with insight-oriented intensive psychotherapy are scarce. Some forms of group psychotherapy have been tried with success. The model of the "medical …

A Study Of Naturally Occurring Algicides Produced By Freshwater Algae, Denny O. Harris, Harry D. Caldwell

KWRRI Research Reports

The mode of action of the algicide produced by Pandorina morum was examined by exposing Volvox globator and isolates spinach chloroplasts to a partially purified algicide preparation. Oxygen evolution of Volvox, whole chloroplasts and broken chloroplasts (minus the Calvin cycle),was reduced indicating that the algicide inhibits the light reactions of photosynthesis. Oxygen evolution studies of other Volvocaceae confirmed the observation that Pandorina morum is not significantly influenced by its own inhibitor. Molecular weight approximation by gel filtration established that the inhibitor has a low molecular weight (probably below 100 mw). Field studies indicate that this algicide has tremendous potential as …

Central Crops And Soils Research Station Highmore, South Dakota: Annual Progress Report, 1974, Agricultural Experiment Station

Agricultural Experiment Station and Research Farm Annual Reports

This is the 1974 progress report for the Central Crops and Soils Research Station at Highmore, South Dakota State College. This document represents the research conducted at the Station during the 1974 crop season including: weather data, small grain variety testing, specialty crop testing, sorghum testing, crop production and management, crop disease control.

Aspects Of Habitat Selection In Grassland Birds, Keith Graham Harrison

Masters Theses

No abstract provided.

The Α-Glycerophosphate Cycle In Drosophila Melanogaster Iv. Metabolic, Ultrastructural, And Adaptive Consequences Of Αgpdh-1 "Null" Mutations, Stephen J. O'Brien, Yoshio Shimada

Biology Faculty Articles

"Null" mutations previously isolated at the αGpdh-1 locus of Drosophila melanogaster, because of disruption of the energy-producing α-glycerophosphate cycle, severely restrict the flight ability and relative viability of affected individuals. Two "null" alleles, αGpdh-1^BO-1-4, and αGpdh-1^BO-1-5, when made hemizygous with a deficiency of the αGpdh-1 locus,Df(2L)GdhA, were rendered homozygous by recombination with and selective elimination of the Df(2L)GdhA chromosome. After over 25 generations, a homozygous αGpdh-1^BO-1-4stock regained the ability to fly despite the continued absence of …