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Evaluation Of Various Methods Used For The Detection Of Significant Bacteriuria In Humans, Joseph P. Truant

Henry Ford Hospital Medical Journal

No abstract provided.

Relation Between Use Of Lincomycin And Outgrowth Of Yeast, Howard W. Clapp

Masters Theses

Introduction

The use of antibiotics has increased the average life expectancy of mankind. They have prevented and cured infectious diseases that previously terminated in death. Consequently, recovery is often prompt and complete.

Though a benefit to mankind, the use of antibiotics in the treatment of infectious disease has also been accompanied by new problems. For example, treatment of a primary infection such as a bacterial pneumonitis with a broad spectrum antibiotic, may result in the death of some of the bacteria. More than one species of bacteria, however, are often found in the infected area. If such be the situation, …

Some Factors Involved In Growth And Sporulation Of Pilobolus Crystallinus Tode And Pilobolus Umbonatus Buller, Kenneth L. Poff

Master's Theses

Pilobolus umbonatus Buller and P. crystallinus Tode grew normally in a nitrogen atmosphere but their sporagnia were non-pigmented. When palced in anaerobic jars along with obligately anaerobic and obligately aerobic bacteria, the fungi grew in the range of oxygen concentrations too low for growth of the aerobic bacterium, but high enough to prevent growth of the anaerobe. The fungi did not grow when the oxygen was depleted to the point that allowed growth of the anaerobic bacterium. Catalase was not produced by the hyphae and trophocysts which normally grow beneath the surface of the medium, but was present in the …

A Study Of Door Pulls On Isolation Carts In A General Hospital For Evidence Of Contamination, Mary Alice Harper

Loma Linda University Electronic Theses, Dissertations & Projects

The purpose of the study was to find out if isolation carts were serving as a means of cross infection. Literature pertaining to sources of possible contamination on hospital units written in the past five years were reviewed.

Using the descriptive survey as the method of study, effort was made to find out if isolation carts were a means of cross infection on the hospital unit. Two laboratory cultures were obtained from both door pulls on all isolation carts used by nursing units. This was done over a three month period from December 12, 1963 to March 11, 1964. The …

Some Physical And Chemical Properties Of Salmonella Potsdam Bacteriophages, Norma W. Lee

Loma Linda University Electronic Theses, Dissertations & Projects

The phages isolated from different lysogenic strains of Salmonella may be divided into different groups on the basis of their heat resistance. In Group A are phages resistant to a temperature of 80°C and in Group B phages that are killed at this temperature. Three temperate bacteriophages P3/2, P4/2 and P9a/2 isolated from lysogenic strains of S. potsdam were investigated. Phage P4/2 is in Group A and phages P3/2 and P9a/2 in Group B.

The kinetics of heat inactivation and of ultraviolet light inactivation of each of these phages were compared. Base ratio analysis of the nucleic acid by the …

Dodecatheon Meadia L., John E. Ebinger

Specimens by Name

No abstract provided.

Dodecatheon Meadia L., John E. Ebinger

Specimens by Name

No abstract provided.

A Comparative Analysis Of Amino Acids In Tetrahymena Pyriformis Under Feeding And Starvation Conditions, Jeanne Whitaker Clabough

Theses & Honors Papers

No abstract provided.

Isolation And Preliminary Characterization Of Bacteriophage Φμ-4, Fred Shafia, T.L. Thompson

Papers in Microbiology

Isolation and preliminary characterization of bacteriophage Φμ-4. J. Bacteriol. 87:999-1002. 1964.-Bacteriophage Φμ-4 was isolated from lysogenic Bacillus stearothermophilus NU strain 4, and was propagated in strain 10 of the same species. The phage was extremely host-specific. One of the 23 strains of thermophiles screened for susceptibility supported phage replication. Plaque-forming efficiency of Φμ-4 depended on the agar medium employed and the temperature of incubation. Generally, media which resulted in restricted growth of the host cells on agar plates were most satisfactory for plaque formation. A latent period of 35 min was terminated in cell lysis and release of about 175 …

Effect Of Fluoride On The Respiration Of Leaves From Higher Plants, Ming-Ho Yu

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Studies concerning the effects of fluoride on the metabolism of both animals and plants have been of interest to many workers. In plants, it has been known that fluoride will inhibit the growth, that it will induce chlorosis as an evidence of visible injury, and that necrosis will eventually result. The economic importance associated with fluoride damage has been widely recognized, and, as a consequence, fluoride has become a major problem of air pollution.

Influence Of Sodium And Calcium Chlorides In The Nutrient Solution On Secretions Of Salt Glands Of Tamarix Species, Don L. Chadwick

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Salt glands are an adaptation for living in saline habitats possessed by several species of plants. In the family of Plumbaginaceae at least three mangrove genera, Aegialitis, Aegiceras, and Avicennia, possess salt glands according to Scholander (1962). Salt glands of the small ornamental shrubs, Statice gmelini, and Limonium latifoluim of the same family, were studied by Ruhland (1915) and Arisz (1955). Spartina townsendii of the Graminaceae and Tamarix petandra, Tamarix hispida, and Tamarix aphylla of the Tamaricaceae families also have the glands.

Some Functions In The Theory Of Neutron Logging, L. S. Allen, C. W. Tittle

Journal of the Graduate Research Center

The solution to the one-energy-group diffusion equation for the case of a point neutron source on the axis of two concentric cylindrical media has been programmed for a digital computer. Numerical results for a wide range of values of diffusion length and diffusion coefficient for the outer medium, and for four radii of the inner cylinder are presented. The outer radius in all cases is effectively infinite.

Louisiana Agriculture Magazine, Spring 1964, Lsu Agricultural Experiment Station

Louisiana Agriculture

No abstract provided.

Induced Fruiting In Myxobacteria, Walter Fluegel

Journal of the Minnesota Academy of Science

The fruiting myxobacteria and the cellular slime molds (Acrasiales) have many superficial resemblances with respect to fruiting behavior. Cells in the swarm are triggered by chemical substances to aggregate and form fruiting bodies (Bonner, 1947; Fluegel, 1963a). A chief difference between the two with respect to fruiting behavior, is that the myxoamoeba are free cells whereas the myxobacters are enmeshed in slime threads (Fluegel, 1963b). However, it is tacitly assumed that if parallel studies be undertaken in myxobacteria as has been done with the slime molds, the cells must be grown dispersed. Most isolates of myxobacteria do not grow dispersed; …

Favorite Sons: Obsolete Presidential Candidates, James W. Davis

Journal of the Minnesota Academy of Science

With the 1964 national nominating conventions slightly more than a year away, nationwide political attention will once again be focused upon the presidential sweepstakes race. Inasmuch as the party controlling the presidency, the "in-party," almost never discards an incumbent, the president is virtually assured renomination by the Democrats; consequently politicians in both parties and the American voters will be concerned chiefly with the selection of the Republican candidate.

At this juncture it is impossible, of course, to predict flatly how many of the leading Republican contenders will openly toss their hats in the ring. But it is safe to assert …

Characterization Of Staphylococcus Species Isolated From Raw Milk With Special Reference To The Enterotoxigenic Coagulase-Positive Types, Adnan M. Ammouri

Electronic Theses and Dissertations

Numerous reports from many parts of the world have described the occurrence of outbreaks of staphylococcus food poisoning. Some studies have incriminated raw milk as a reservoir of the staphylococcus organisms as the vehicle of transmission. Recently Cheddar cheese has been implicated as the contaminating agent in food poisoning outbreaks traced to dairy products. The frequency of outbreaks of staphylococcus food poisoning has stimulated interest in the characterization of members of the staphylococcus genus. The strains particularly important are those capable of production an enterotoxin. In order to determine the strains of staphylococcus organisms isolated from raw milk which are …

Louisiana Agriculture Magazine, Winter 1964-1965, Lsu Agricultural Experiment Station

Louisiana Agriculture

No abstract provided.

The Effect Of Frozen Storage On The Microflora Of Raw Milk, Jaswant Singh

Electronic Theses and Dissertations

The proper handling of milk samples prior to bacterial analysis has been somewhat of a problem to dairy processors of South Dakota. There have been, and still are, many queries by these people about the treatment of o milk sample prior to the determination of a bacterial count. Should the milk samples be frozen prior to determining the number of bacteria? If it is feasible, what effect will the freezing have on the number of bacteria found? No tangible information about this problem has been found in the literature. Standard procedure emphasize mainly the icing of milk sample before analyzing …

Hyperparasitism, Michael G. Boosalis

Department of Plant Pathology: Faculty Publications

Much of the research on hyperparasitism has been of a descriptive nature, based primarily on studies with dual cultures in synthetic media. The main contributions from these investigations concern the host range of the parasite, the mode of penetration and infection, and the morphological changes of the host and the parasite resulting from parasitism.

More recent studies on hyperparasitism emphasize the effect of environmental factors, especially nutrition, on the susceptibility of the host. Research on the physiology of hyperparasitism has been limited. Nevertheless, this important aspect of the problem should continue to receive increased attention as hyperparasitism is extremely amenable …

Influence Of Surface Active Agents On Some Lactic Streptococci, R. B. Maxcy

Department of Food Science and Technology: Faculty Publications

Fatty acids and other surface active agents were used to clarify the relationship of surface activity to the inhibition of lactic streptococci. There was complete inhibition of lactic streptococci in media where surface activity exceeded a critical level. The effectiveness of inhibition by fatty acids, nonionic surface active agents, anionic surface active agents, decyl alcohol, growth medium, and temperature variation was directly related to the surface activity. The surface active agents created an unfavorable environment at most concentrations, rather than acting as a specific inhibitory substance to which the organisms were capable of adapting and thereafter resuming normal growth. The …

The Effects Of Herbicides, Fungicides, And Insecticides On Bacteria Of Marine Origin, Kenneth William Pierini

Master's Theses

No abstract provided.

Using Sordaria Fimicola For Teaching Genetic Segregation, Crossing Over, And Probability, Roger Green Isaacson

Dissertations and Theses @ UNI

Since the late 1950's, American education has been undergoing a critical evaluation and review. This review has brought about some changes in emphasis and an upgrading in science curricula. The American Institute of Biological Sciences, supported by the National Science Foundation, accepted major responsibility for the field of biology and established the Biological Science Curriculum Study (BSCS). H. Bentley Glass., Chairman of BSCS, states: "The aim of the Biological Science Curriculum Study is to place biological knowledge in its fullest modem perspective. To accomplish this aim, a program of research, writing, testing, and evaluation was inaugurated.

Notes On The Natural History Of The Sabellariid Polychaete Phragmatopoma Californica, Dean Ernest Griffin

University of the Pacific Theses and Dissertations

In the coves and crevices at Natural Bridges State Park, Santa Cruz, California, one can find large masses of worm tubes constructed of sand. These tube masses often cover areas of several square feet. The tubes are usually straight and packed together in large masses. The individual tubes are about one-fourth of an inch in diameter and may be up to two and one-half feet long. The worm responsible for these masses of tubes is a small polychaete, Phragmatopoma californica.

Very little work has been done on the natural history of local sabellarlids. It is therefore the purpose of this …

Abstracts

Henry Ford Hospital Medical Journal

No abstract provided.

Editorial: Blood Platelets, John W. Rebuck

Henry Ford Hospital Medical Journal

No abstract provided.

Louisiana Agriculture Magazine, Fall 1963, Lsu Agricultural Experiment Station

Louisiana Agriculture

No abstract provided.

Abstracts

Henry Ford Hospital Medical Journal

No abstract provided.

Hard-Bodied Ticks Of The Western United States. Parts Ii And Iii, Elias P. Brinton, D Elden Beck

Brigham Young University Science Bulletin, Biological Series

No abstract provided.

Studies On Energy-Yielding Reactions In Thymus Nuclei. 3. Participation Of Glycolysis And The Citric Acid In Nuclear Adenosine Triphosphate Synthesis., Bruce S. Mcewen, V. G. Allfrey, A. E. Mirsky

McEwen Laboratory

No abstract provided.

Studies On Energy-Yielding Reactions In Thymus Nuclei. 2. Pathways Of Aerobic Carbohydrate Catabolism., Bruce S. Mcewen, V. G. Allfrey, A. E. Mirsky

McEwen Laboratory

No abstract provided.