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In the field cricket, Teleogryllus oceanicus, two types of auditory interneurons, AN2 and ON1, have been studied. AN2 responds best to ultrasound frequencies (≥20kHz) produced by echolocating bats and initiates negative phonotaxis by the cricket. ON1 responds to both low (4-5kHz) and high frequency sounds and encodes the temporal information present in sounds of both frequencies. ON1 also provides lateral inhibition to contralateral interneurons, such as AN2, thereby enhancing binaural contrast. The pharmacology associated with these two interneurons is investigated here. ON1's response to 4.5kHz sound is increased following picrotoxin application, while it's ability to encode temporal information present in low and high frequency sounds is reduced. An increase in spiking response and a decrease in response latency to low frequency sound is produced by the addition of atropine, while d-tubocurarine application increased ON1's response latency to both 4.5kHz and 30kHz sound. The neuromodulator octopamine reduced AN2's response to ultrasound.

Hydrogel smart polymers have achieved a great attention in the research area of drug delivery, MEMS/NEMS, microfluidics and sensor design because of their responsiveness to various environmental stimuli- pH, temperature, light, electric field, enzyme etc. This thesis presents the modeling, fabrication and study of the bending deformation of magnetic field sensitive hydrogel micro fibers called ferrogels. The objective is to externally actuate the ferrogel fibers by applying magnetic field, for the application of targeted drug delivery inside the alveoli of a human lung. Prediction of the bending deformation of the ferrogel fibers is done by the Multiphysics Finite Element Modeling in an Arbitrary Lagrangian Eulerian (ALE) framework. Ferrogel micro fibers are fabricated and the bending deforma-tion is studied experimentally by varying the aspect ratio of the fibers, volume fraction of the magnetic particle content of the fibers and the magnetic field strength. The numerical and experimental results are compared. This is the first attempt to numerically predict the bending deformation of ferrogel micro-fibers.

Copy of author's previously published article included. / Bibliography: leaves 160-164. / iv, 164 leaves : ill. ; 30 cm. / Title page, contents and abstract only. The complete thesis in print form is available from the University Library. / This thesis is concerned with the analysis of data from series of plant variety trials. These involve the evaluation of varieties in designed experiments at a number of locations and possibly over several years. / Thesis (Ph.D.)--University of Adelaide, Dept. of Applied Mathematics, 1999

238 p. ; 26 cm. / Title page, contents and abstract only. The complete thesis in print form is available from the University Library. / Thesis (Ph.D.)--University of Adelaide, Dept. of Mathematical Physics, 1974

176 leaves : appendices / Title page, contents and abstract only. The complete thesis in print form is available from the University Library. / Thesis (Ph.D.)--Dept. of Mathematical Physics, University of Adelaide, 1971

Thesis (Ph. D.)--Montana State University--Bozeman, 2007. / Typescript. Chairperson, Graduate Committee: William A. Hiscock. Includes bibliographical references (leaves 55-60).

Thesis (Ph. D.)--University of Adelaide, Dept. of Mathematical Physics,1986. / Erratum (14 leaves) in pocket. Includes bibliographical references (leaves 124-128).

Thesis (Ph. D.)--University of Texas at Austin, 2007. / Vita. Includes bibliographical references.

Thesis (Ph. D.)--University of Adelaide, Dept. of Physics and Mathematical Physics, 1992. / Includes bibliographical references.