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The Effects of Hexadecanol on the Microbiota of Lake Hefner
It seemed desirable to investigate more fully the effect of hexadecanol on the microbial population of a reservoir. It was the purpose of this investigation to determine the effect of hexadecanol on the micro-biota of Lake Hefner, to ascertain which organisms were stimulated by hexadecanol both in the laboratory and the reservoir, and to investigate the degradation of hexadecanol by microorganisms selected from Lake Hefner.
Date:
May 1968
Creator:
Dickson, Kenneth L.
System:
The UNT Digital Library
A Qualitative Survey of the Airborne Algae, Protozoa, and Bacteria at the Denton Sewage Treatment Plant
This study had a three-fold purpose. First, it was decided to determine if algae and protozoa were emitted to the air at the Denton sewage treatment plant. The information obtained could be of future importance in the fields of algal and protozoan ecology and public health. Second, it was decided to make a survey of the airborne bacteria at this plant. Some researchers have described bacterial air contamination at similar sewage treatment plants, but the one in Denton has not been studied. Third, it was hoped that in this research some relationships could be found between the bacteria and the algae and protozoa in the air in the vicinity of the sewage aeration basin. It was hypothesized that pathogenic bacteria were carried in the air with these other organisms.
Date:
May 1968
Creator:
Mahoney, Joseph L.
System:
The UNT Digital Library
The Effects of Simulated Altitude on the Intestinal Flora of Guinea Pigs
The purpose of this paper is to report the results of studies on the aerobic, mesophilic intestinal flora of guinea pigs subjected to conditions similar to those encountered by man in spacecraft.
Date:
May 1969
Creator:
Funderburk, Noel R.
System:
The UNT Digital Library
Distribution of Phosphates in a Sewage Plant and its Receiving Waters
The purpose of this paper is to detail the distribution and quantity of soluble phosphates in an activated sludge plant, its discharge creek, and receiving reservoir. The resultant analyses and comparison of data should provide some better understanding of the fate of phosphorus in a Southwestern waterway system.
Date:
May 1969
Creator:
Hansard, John D.
System:
The UNT Digital Library
Quantitative Aspects of the Microflora of an Overland Flow Spray Irrigation Sewage Disposal System
It was the purpose of this investigation to attempt to quantitate the microflora of the fields which receive the effluent from the Campbell Soup Plant, Paris, Texas, and to determine whether or not there is a correlation between the numbers and types of organisms present and the efficiency of purification of the system.
Date:
May 1969
Creator:
Jones, Rebecca
System:
The UNT Digital Library
A Comparison of the Carbon Dioxide and Oxygen Rate of Change Methods for Measuring Primary Productivity
The purpose of this study was to demonstrate the variability of oxygen and carbon dioxide rate of change methods for measuring primary productivity and respiration in an aquatic environment.
Date:
May 1969
Creator:
Trotter, Dennis M.
System:
The UNT Digital Library
The Synecology of Phyco-Periphyton in Oligotrophic Lakes
This study is designed to (a) demonstrate the highly productive nature of the littoral area as compared to the pelagic region, (b) the possible importance of phyco-periphyton in the diets of fish, (c) the effects of meteorological conditions on distribution of phytoplankton, and (d) a demonstration of the invalidity of using artificial substrates as a universal means of measuring productivity.
Date:
May 1964
Creator:
Foerster, John W.
System:
The UNT Digital Library
Bentric Algae of Selected Thermal Springs of Yellowstone National Park
The purpose of this investigation was to characterize the population dynamics of the benthos of selected pristine thermal springs.
Date:
May 1964
Creator:
Mann, James Edward
System:
The UNT Digital Library
Water and Ion Eflux in Isolated Onion Roots
The aims of this study were: (1) to determine simultaneously by means of a micro-potometric method the rates of water and various isotopic ion effluxes from isolated onion roots; (2) to determine and compare the effects of metabolic inhibitors on both processes simultaneously; (3) to ascertain the similarity or dissimilarity of mechanisms involved with these two processes; (4) to ascertain the role of active metabolism in each of these processes; (5) to shed light on possible gearing mechanism(s) between metabolic and transport processes.
Date:
May 1964
Creator:
Davis, Robert F.
System:
The UNT Digital Library
Phosphatides of Atypical Mycobacteria
The purpose of this investigation was to extract, separate, partially characterize and compare the individual phospholipids of the atypical mycobacteria.
Date:
May 1968
Creator:
Hollingsworth, Russell C.
System:
The UNT Digital Library
Actinoplanes Philippinensis: Effect of Carbon Sources on Zoospore Production
Actinomycetes are able to utilize a great variety of carbohydrates, like sugar. The particular kind of sugar and its concentration has decisive effect on the growth of microorganisms. The proper nutritional media aids also in the production of spores. Based on this generalization, that the growth and sporulation of microorganisms are greatly influenced by the nature and the concentration of carbohydrates, an attempt has been made to study Actinoplanes philippinensis with respect to this influence.
Date:
May 1968
Creator:
White, Olivia
System:
The UNT Digital Library
The Production of Fragile Cysts by an Aberrant Strain of Azotobacter Chroococcum Isolated from Soil
The purpose of this study is to determine if a strain of Azotobacter chroococcum isolated from the soil in northern Louisiana produces cysts which are as resistant to deleterious agents as those produced by previously reported strains os Azotobacter.
Date:
May 1969
Creator:
Cagle, Gerald D.
System:
The UNT Digital Library