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A Study Of The Correlation Of Acid Production And Population Growth In Escherichia Coli, Proteus Morgani And Shigella Sonnei, Lolita R. Fritz

Biology ETDs

During the course of growth in a bacterial culture, cellular development and reproduction take place in a regular and orderly manner. It is possible to observe definite phases in the normal growth of a culture. Some method of evaluation of the growth must be used in order to determine the population change or the effect of chemical and physical environment on bacterial cells. Numerous methods have been tried, employing the total population number or rate of production is used in this investigation as an indication of population growth of Escherichia coli, Proteus morgani and Shigella sonnei.

There has …

A Method For The Determination Of Adrenaline In The Presence Of Mono And Dihydroxy Compounds, Glenn H. Steinback

Biology ETDs

Although the adrenal glands have long been known anatomically, any clue to their probable function remained hidden until the nineteenth century. According to Best and Taylor (1949) Eustachius described the adrenal glands in his book entitled “De Glandulis Quae Renibus Incumbent” as early as 1563.

The Role Of Environmental Factors In The Metamorphosis Of Ambystoma Tigrinum Mavortium Baird, John Roberts

Biology ETDs

The problem presented by this paper are directly concerned with the environmental factors influencing metamorphosis in Ambystoma tigrinum, and since the thyroid and pituitary glands are important in amphibian metamorphosis a brief account of experiments relating to metamorphosis is given here.

The Saponification Of Esters, Robert Delong Sullivan

Bachelors’ Theses

The kinetics of chemical reactions has always been a very intriguing subject. It is the tool by which the mechanisms of chemical reactions are elucidated. Upon it partly rate the advisability of utilization of a particular reaction for industrial purposes. From it the field or catalysis has sprung. Chemical kinetics. is concerned with all branches of chemistry. Conversely, all branches of chemistry have an interest in it.

This thesis will attempt to do two things. First, the order, specific rate constant, and the energy of activation will be determined from the saponification of several esters. second, the introduction will cover, …

The In Vitro Determination Of Human Blood Oxygen Saturation In The Presence Of High Concentrations Of Carbon Dioxide, Elizabeth D. Armstrong

Biology ETDs

Mayow’s work in 1673 is cited by Landois (1905) as the first demonstration of the liberation of gases from blood in a vacuum. In 1863 Meyer, Ludwig, and Pfleuger established that the oxygen leaving the lung was transported in a combined form with hemoglobin and that the oxygen was released into the tissues accompanied by a change in color of the blood.

Induced Neoteny In Ambystoma Tigrinum Mavortium Baird I. Treatment With Non-Hypophyseal Hormones, John E. Furchner

Biology ETDs

Metamorphosis in amphibia has been the subject of many investigations, not only because the phenomenon is a manifestation of growth and differentiation, but also because of the close relationship between metamorphosis and the thyroid gland.

The Development Of The Scholander Micro-Respirometer For Use In The Study Of Metabolism In Bacterical Endospores, Phillip G. Crook

Biology ETDs

In this paper, the Scholander micro-respirometer has been adapted, and techniques worked out, to permit its use in attacking the problems associated with endospore respiration.

Colorimetry And Its Application To Analytical Methods, William L. Walls

Biology Honors Papers

This 46 page thesis discusses the theory and history of colorimetry and describes colorimetric analysis of organic and inorganic constituents of the human body and a few of the lower vertebrates.

A Special Respiratory Mechanism In The Adrenal Gland Of Cattle, Martin Roeder

Biology ETDs

The first definite evidence for the existence of an enzyme which catalyzes the biological oxidation of phenols was presented was presented in 1896 by Bourquelot and Bertrand. By 1902 the latter had characterized the enzyme as acting directly on the amino acid tyrosine, and had demonstrated its action against other substances, including p-hydroxyphenylethylamine, p-cresol, and phenol.

The Life Cycle Of The Ostracod Cypricercus Reticulatus (Zaddach, 1844) Sars, 1928, Louise E. Goeke

Biology ETDs

The purpose of the present study is to describe the stages in the life-cycle of the fresh-water ostracod, Cypricercus reticulatus (Zaddach,1844) Sars, 1928 of the family Cypridae. This particular species was chosen primarily because of availability. The selection of this species was fortunate since C. reticulatus was found to be easily adapted to laboratory conditions. In addition, the form was a fortunate selection because the period of time required for reproduction is relatively brief and the species reproduces parthenogenetically, thus eliminating difficulties incident to impregnation of the females.

A Method Of Demonstrating Corneal Mitosis (After The Method Of Gay And Kaufmann), Ernest Swanson, Shirley P. Miller

Journal of the Minnesota Academy of Science

No abstract provided.

A Study Of The Effects Of Electrical Stimulation, Gonadotrophin, And Thymus Upon The Metamorphosis Of Ambystoma Tigrinum Baird, Leon J. Butterfield

Biology ETDs

It was the purpose of this study, (1) to measure the polarization of zodiacal light, (2) to investigate the orientation of the plane of polarization, and (3) to deduce from results obtained information concerning the origin of zodiacal light.

A Preliminary Investigation Of The Species Of Water Mites Of The United States Rocky Mountain Region And Vicinity Of Albuquerque, New Mexico, David W. Bergstrom

Biology ETDs

The primary purpose of this research problem is to give a preliminary accounting of the species of Hydracarina or water mites found at several mountain localities in Colorado, Wyoming, Utah, Montana, and New Mexico. In general, since the collecting was confined to altitudes above 4500 feet, the results of this problem constitute a survey of some of the highest forms of water mites of the United States.

Studies On The Reactivating Sclerotium Of Physarella Oblong Morgan With Special Reference To The Nucleus, William Thomas Allman

Master's Theses

The Myxomycetes, because of their naked, mobile mass of protoplasm have served biologists and chemists as material for the study of the char­acteristics of protoplasm. The typical life his­ tory of such an organism may be summarized as follows: The vegetative phase in the life history consists of a naked mass of protoplasm, to which Oienkowski (9) applied the name "plasmodium". This plasmodium creeps by reversible streaming over and throughout the substratum, deriving its food from various constituents of decaying vegetable matter which serve as its normal substrate. Upon reaching a state of maturity and under certain environmental conditions, the …

A Study Of Stimulated Respiration In The Adrenal Gland, Owen Foster Kline Jr.

Biology ETDs

The purpose of this paper is to present certain preliminary observations on what is believed to be completely new special metabolism in the adrenal gland of Hereford cattle. Although no direct correlation between any of the substances isolable from the adrenal gland and the respiratory system to be described in this paper has been obtained, it is nevertheless necessary to present a review of the chemical and medical data available pertaining to these glands.

Ecological Changes In An Overgrazed Grassland Area Resulting From Eleven Years Of Protection Against Livestock Usage, Larry L. Gordon

Biology ETDs

The present paper, like many others already published, contributes to our knowledge of the effect of long time overgrazing and the recovery of lands temporarily retired from utilization. In the present study, an attempt is made to determine the effects of an eleven year recovery of grazing lands following misuse for nearly two centuries. The topics given detailed attention include the flora with particular reference to the grasses and forbs, the fauna with special emphasis on the rodents, and the climatic and edaphic factors.

The area in which the study was conducted is on the east side of the Rio …

The Man Of Tomorrow, Murray N. Silverstein

Biology Honors Papers

This 28 page thesis speculates on possible evolutionary changes that humans may undergo in order to survive the threats of atomic energy.

Microradiography With Biological Specimens, Arthur D. Wellman

Bachelors’ Theses

Microradiography is a technique in which X-rays are directed through a very thin specimen onto a fine-grained photographic film and the image examined under magnification. It has been used chiefly as a supplementary tool in industrial analysis of metal structures, and even in this field has attained prominence only within the past decade. Its usefulness is limited to fine structures (except where minute flaws or impurities are to be examined in a material), and its success is limited by the degree of clarity in the radiograph to be magnified.

Actinomycetes Of Virgin Utah Soils With Special Reference To Antagonisms, Paul H. Krumperman

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The importance of actinomycetes in the soils was generally overlooked until about 1913. The investigators Hiltner and Stormer and Beijerinck began systemtaic study of their occurrence and role in soil fertility. The work done by these men and others since 1913 has proved actinomycetes to occur abundantly in most soils of the world. This work done by these men and others since 1913 has proved actinomycetes to occur abundantly in most soils of the world. This work has also proved the function of these organisms to be that of decomposing highly resistant materials such as humus and complex polysaccharide compounds. …

Hive And Field Mortality Of Honey Bees In Northern Utah Due To Effects Of Certain Ecological And Chemical Factors, Shih Chun Ma

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The honey bee is the most important pollinating insect in Utah, because various important crops such as fruits, legumes, and vegetable seed crops depend chiefly on it for pollination. In the past, honey bees have suffered repeated severe death losses through contact with arsenic and other agricultural chemicals. Recently the newer insecticides, such as DDT, chlordane, parathion, benzene hexachloride, lindane, toxaphene, and several kinds of miticides have further complicated the problem of bee survival. In addition, natural enemies such as predators and parasites and some unfavorable environmental conditions, including unfavorable temperature and humidity, wind, storm, and other changeable weather conditions, …

Leafhoppers (Cicadellidae) Associated With The Stone Fruit Orchards Of Northern Utah, Mervin W. Nielson

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Virus diseases of stone fruit orchards have existed in Utah for more than a quarter of a century and are seriously diminishing the peach and cherry fruit production. Western X of peach, rusty mottle of cherry, wilt and decline of cherry, and little cherry constitute the most economically important stone fruit virus diseases in Utah. Many orchards, particularly in Davis County, have 50 to 83 percent of the trees infected with one or more of the yellow-red viroses. Surveys have shown that the diseases are spreading from 3 to 5 percent each year. It is believed that certain insects are …

Rodent Populations And Activities On A Moderately Grazed Mixed Prairie Near Hays, Kansas, John L. Paulk

Master's Theses or Doctor of Nursing Practice

The purpose of this investigation was to study rodent populations on a moderately grazed mixed prairie. A working knowledge of the activities of these small mammals, has satisfied to a certain degree the curiosity of the writer. So little work has been done in this plains region that the author felt the need for such an investigation, and hoped to arouse the interest of others along similar lines.

Science And Supposition In Evolution, Geology, And Astronomy, D. A. Sommer

Stone-Campbell Books

No abstract provided.

Salmonella And Paracolon Species Isolated From The Wild Brown Rat, Rattus Norvegicus, In The City Of Richmond, Virginia, John Miles Sharpley

Master's Theses

The importance of bacteria as a cause of serious intestinal diseases in man and. other animals has been recognized since the early days of the science of bacteriology. Of those forms usually associated with intestinal disturbances in man, the species considered most important are those belonging in the Salmonella group, the Paracolon group, and the Shigella group. Also, it has been known since the early part of this century that the conman rat serves as an important vector for the dissemination of infectious organisms. For example, standard textbooks list rats as primary vectors of enteric bacteria. However. there has been …

06 September 1950 Grant County Specimen Collection Data, W.J. Koster

William J. Koster Field Journals

Specimen collected 06 September 1950. Original Locality: Rio San Francisco 2 miles above Frisco Hot Spring. Locality: San Francisco River, 2.0 miles above San Francisco Hot Springs, off U.S. HWY 180, south of Pleasanton, Gila Wilderness, Gila National For
Catalog number: MSB459; Taxa: Ameiurus melas; Common name: black bullhead; Count of specimens: 2; Standard length:
Catalog number: MSB750; Taxa: Rhinichthys osculus; Common name: speckled dace; Count of specimens: 4; Standard length:
Catalog number: MSB1488; Taxa: Agosia chrysogaster; Common name: longfin dace; Count of specimens: 279; Standard length:
Catalog number: MSB2941; Taxa: Rhinichthys cobitis; Common name: loach minnow; Count of specimens: …

Trypanosoma Barbari, A New Species From The Newt Triturus Torosus, Donald Lewis Lehmann

University of the Pacific Theses and Dissertations

Whlle making studies of the parasites of fishes and amphibians at the Pacific Marine Station, Dillon Beach, California, during August, 1949, the writer encountered a hitherto unreported trypanasome from a female Triturus torosua. From the information obtained from the one smear, which was stained, the animal was presumed to be monomorphic, However, during February, 1950, a search was made expressly for the purpose of' obtaining specimens of this Pacific Coast newt, and of the eight animals examined six were parasitized. Contrary to the primary observations, evidence was accumulated which proved beyond any doubt that the flagellate is polymorphic and that, …

The Effect Of Certain Chemotherapeutic Substances On Antibody Production, Clifford C. Davis Jr.

Biology ETDs

The purpose of the present study was (1) to compare the production of specific antibodies in normal animals to that seen in similar animals receiving treatment with a given compound during the immunization period; (2) to correlate these responses with the over-all physiologic response of the animal to the compound; and (3) attempt to account for any variations from the normal by these animals.

Stem Anatomy Of Twelve Forbs Of The Family Compositae Growing Near Hays, Kansas, Cheng Lin

Master's Theses or Doctor of Nursing Practice

The importance of forbs to the livestock diet seems to come from their high percentage of calcium and phosphorus (Runyon, 1947). Furthermore, they also contain a higher amount of moisture (Savage and Heller, 1947) which makes them more succulent and therefore more palatable than the grasses during drought. This condition of greater succulence is due in part at least to _the more deeply penetrating roots of the forbs (Albertson, 1937). Observations also have indicated the possibility of a considerable amount of latex, oils and resins in the green forb plants. Because of the importance of these plants it was thought …

A Study Of The Effects Of An Estrogenic Complex On Bacillus Subtilus, Roger S. Wotkyns

Biology ETDs

In an effort to understand malignancies, a number of studies have been made on the quantitative aspects of the effects of synthetic carcinogenic hydrocarbons on microorganisms. The molecular similarities of these synthetic carcinogens and natural products such as the estrogens, the androgens, cholic acid, vitamin D and others have stimulated a great deal of interest in investigation of the possible carcinogenic nature of these natural products.

The Effect Of Formalin On Futhering Delayed Separation Of Conjugating Paramecium Aurelia, Willard Casper Jordan

Tennessee State University Alumni Theses and Dissertations

No abstract provided.