Now showing items 1-8 of 8
Techniques for the Collection and Assay of Sleep Promotion Factor in Exercised and Sleep Deprived Dogs
(Drake University, 1981-05)
The problem. The Pieron Phenomenon is the production of sleep in fully rested animals after a ventricular infusion of cerebrospinal fluid (CSF) from sleep deprived animals. According to the humoral theory of sleep, this ...
The Effect of Occupancy on the Growth Rate of Tetrahymena Pyriformis in a Closed Biological System
(Drake University, 1964-05)
The Effects of Microwave Radiation on the Infectivity of Trichinella Spiralis
(Drake University, 1984-07)
The problem: The effects of microwave radiation on the infectivity of "Trichinella spiralis" in young, white, laboratory mice were studied. Procedure. Mice were divided into two groups: 1) mice receiving isolated, ...
An Intracellular Polysaccharide that Serves as a Carbon and Energy Source for Sporulation in "Bacillus Cereus" Strain T
(Drake University, 1984-04)
The Problem. "Bacillus cereus" strain T accumulates an intracellular polysaccharide during late logarithmic and early stationary phases of the growth cycle. The polysaccharide is subsequently degraded during the ...
Phenotypic Suppression of "Escherichia coli" K88ac antigen by selective media and termperature variations
(Drake University, 1980-09)
The K88ac antigen, thought to he a pilus on "Escherichia coli", has been determined to be one of the virulence factors in neonatal porcine colibacillosis. Using five different "E. coli" strains, the suppression of this ...
Antigenic Relationship of Different Porcine Rotavirus Isolates and the Identification of a New Porcine Strain
(Drake University, 1983-08)
The problem. Currently, only one strain of porcine rotavlrus has been reported. This strain, designated OSU, has been attenuated and is currently available as a federally licensed, live oral vaccine for pigs. This study ...
The Effect of Spermidine on the Rate of Sex-Linked Recessive Lethals Caused by X-Ray in Drosophila Melanogaster
(Drake University, 1984-05)
The problem. Spermidine is a polyamine naturally occurring in many organisms including "Drosophila melanogaster". It has been shown to decrease the heat denaturation of DNA by binding to the DNA double helix. The agent ...
A Role of Intracellular Polysaccharide in the Sporulation of "Bacillus Cereus"
(Drake University, 1980-05)
The problem. "Bacillus cereus" accumulates an intracellular polysaccharide under conditions of nutritional stress. The polysaccharide is then degraded as the organism begins sporulation. This study concerns intracellular ...