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Food Habits and Dietary Overlap of Four Species of Rodents from the Mesquite Plains of Texas
The coexistence of Dipodomys ordii and Perognathus hispidus with Peromyscus maniculatus and Reithrodontomys montanus was studied in a grassland association of central Texas. The food habits of these species were compared with information from habitat vegetation analysis in an effort to determine food selectivity and the amount and importance of niche overlap and competition among these rodents.
Date:
May 1972
Creator:
Alcoze, Thomas M.
System:
The UNT Digital Library
An Immuno-Electron Miscroscopy Study of the Slime Layer Antigen of Pseudomonas Aeruginosa
This investigation was concerned with the relationship of the slime layer material of Pseudomonas aeruginosa, Verder and Evans strain 1369, to the presumably somatic "O" type of antigen used by these authors as the base for their serological schema.
Date:
May 1972
Creator:
Pardue, Robert L.
System:
The UNT Digital Library
Effect of Indole-3-Acetic Acid on the Nucleic Acids of Synchronous Cultures of Chlorella Pyrenoidosa
It was the purpose of this study to investigate the effect of various concentrations of IAA on the nucleic acids of Chlorella pyrenoidosa TX 7-11-05. The time during the life cycle when the greatest effect occurred was investigated by the use of synchronous cultures.
Date:
May 1972
Creator:
Peterson, James Arthur
System:
The UNT Digital Library
The In Vitro Bactericidal Activity of Antiserum Against Pseudomonas Aeruginosa
The purpose of this research was to attempt to duplicate the in vitro bactericidal test against Pseudomonas aeruginosa as reported by Bjornson and Michael and to correlate agglutinating titer of an antiserum to protective activity.
Date:
May 1972
Creator:
Stanford, Shirley A.
System:
The UNT Digital Library
Nitrogen Accretion on a Lacustrine Plain
The purpose of the investigation was to locate the plant population which had the greatest impact on soil nitrogen in a successional sequence from newly deposited alluvia to a mature streamside forest, and to evaluate the pioneer populations in terms of their annual nitrogen contribution.
Date:
May 1972
Creator:
Davis, Karla S.
System:
The UNT Digital Library
Some Acute Effects of X-Irradiation (LD100) on Plasma and Adrenal Tissue Histamine in Rats
The effects of a lethal dose (1380 r) of X-irradiation on plasma and adrenal tissue histamine levels of rats were studied. The plasma histamine response was triphasic (increase at 1-3 hours, decrease at 5 and 9 hours and return to control at 24 hours post-irradiation). The adrenal tissue histamine response was found to be biphasic (decrease at 1 to 9 hours and a return to control level at 24 hours post-irradiation).
Date:
May 1972
Creator:
Ferguson, James L.
System:
The UNT Digital Library
A Study of Malate Dehydrogenase Isoenzymes in the Midge Larva Glyptotendipes barbipes
Two isoenzymes of malate dehydrogenase were isolated and partially purified from the midge larva Glyptotendipes barbipes. Differential centrifugation followed by cellulose acetate and polyacrylamide gel electrophoresis revealed one isoenzyme associated with the mitochondrial fraction and another form found only in the cytoplasm.
Date:
May 1972
Creator:
Jones, Vicki E.
System:
The UNT Digital Library