Ball State University LibrariesLibrary services and resources for knowledge buildingMasters ThesesThere is no abstract available for this thesis.

Ball State University LibrariesLibrary services and resources for knowledge buildingMasters ThesesThere is no abstract available for this thesis.

Ball State University LibrariesLibrary services and resources for knowledge buildingMasters ThesesThere is no abstract available for this thesis.

Ball State University LibrariesLibrary services and resources for knowledge buildingMasters ThesesThere is no abstract available for this thesis.

Ball State University LibrariesLibrary services and resources for knowledge buildingMasters ThesesThere is no abstract available for this thesis.

This study was an evaluation of the applicability of the neutron generator in identifying the manufacturing sources of drugs by studying; trace elements present in drug samples. The motivation w1as the possible assistance to law enforcement agencies in tracing illicit drugs to their origins.Eight samples of dextroamphetamine sulfate were used in the evaluation process. The samples were activated with a neutron generator producing a 14MMeV neutron flux of the order of 1010 neutrons/sec/cm2. A pair of NaI detectors and a multichannel analyzer were used to study, the decay spectra of the samples.The analytical system was found in most cases to be quite capable of detesting elements which were present in a few parts per million. Little success was encountered in detecting elements present at levels commonly considered to be trace amounts. Phosphorus, silicon, sodium, iron, and strontium where found in amounts ranging from 65 to 250,000 parts per million.Ball State UniversityMuncie, IN 47306

A study was made of subspeciation in Asclepias tuberosa using descending paper chromatography. An attempt was made to characterize the three subspecies of Asclepias tuberosa on the basis of amino acid and phenolic patterns.The amino acid patterns were of little value for differentiating the subspecies.The fluorescent phenolic compounds of Asclepias tuberosa were analyzed by placing the chromatograms under longwave ultraviolet light and under longwave ultraviolet light in the presence of ammonia vapor.The patterns of the three subspecies produced under ultraviolet light and under ultraviolet light in the presence of ammomia vapor showed identifying markers for each of the three subspecies. Hybrid plants were also distinguished.Ball State UniversityMuncie, IN 47306

This research has examined the phylogenetic relationship between the questionable Athyrium pycnocarpon and the valid Athyrium thelypteroides. Classical taxonomic data were reported to illustrate the sources of confusion in the phylogenetic positioning of the fern in question. Chromatographic analyses of biochemical secondary constituents were reported. Descending paper chromatograms, ascending thinlayer chromatograms and cellulose-acetate electrophoretograms were the three analytical tools used to develop the secondary compounds. Ultraviolet light and ninhydrin visualization of the separated secondary constituents produced characteristic spotting patterns. On the basis of the close similarities of all patterns between the Athyrium pycnocarpon and Athyrium thelypteroides, it was concluded that the Athyrium pycnocarpon is unquestionably a member of the Athyrium complex.Ball State UniversityMuncie, IN 47306

This study was an attempt to determine the temperature of select stellar bodies. Spectral data was to be obtained using a compensated vacuum thermocouple, a 10-inch Newtonian reflector, a current galvanometer, and select filters. Effective temperatures were to be calculated using the spectral data collected, Planck's radiation law, and bolometric theory. No stellar radiation measurements were taken because the galvanometer was not sensitive enough to detect current produced by the thermocouple when it was illuminated by stellar radiation.After the unsuccessful attempt to measure stellar radiation data was collected for radiation from 0.8425 of the radius of the sun's disk. Ratios for the intensity of radiation for three spectral components was found as follows; 0.48 for λ = 0.43 μ (blue ); 1.35 for λ = 0.525 μ (green); 0.88 for λ = 0.825 μ (red-infrared). water cell radiation measurements were also taken to provide relative energy information. The water cell measurements show that the sun transmits approximately 51% of its energy in the visible an ultraviolet spectrum.Ball State UniversityMuncie, IN 47306

This thesis explored "lacunarity" as a technique for measuring ionization and energy loss of charged particles in nuclear emulsion. Lacunarity is defined as the fraction of a track segment that consists of gaps. A comparison was made between lacunarity and other methods of measuring ionization, particularly the method of measuring blob density. The nuclear emulsion used was exposed to a one GeV/C K- -meson beam.produced by the accelerator at the university of California at Berkeley. Proton, K – meason, π – meson and muon tracks emanating from “stars” or sites of nuclear disintegration were used as bases of study. The procedure was to plot grain density as determined by lacunarity of a track segment as well as blob density versus residual range for the various particles. This student found that except for tracks of very heavily ionizing particles or of very lightly ionizing particles, lacunarity is a better measure of ionization and energy loss than is blob density.Ball State UniversityMuncie, IN 47306