Greg Thiele

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The interpretation of transient tracer observations depends on dif • cult to obtain information on the evolution in time of the tracer boundary conditions and interior distributions. Recent studies have attempted to circumvent this problem by making use of a derived quantity, age, based on the simultaneous distribution of two complementary tracers, such as(More)
Single neuronal units from the pineal stalk and the pineal body of hamsters, guinea pigs and rats were recorded during photic stimulation of the lateral eyes in order to identify the retinal photoreceptor that mediates the environmental control of the mammalian pineal. Two cell types could be distinguished: one type was characterized by spontaneous spike(More)
Milling and micronization of particles are routinely employed in the pharmaceutical industry to obtain small particles with desired particle size characteristics. The aim of this study is to demonstrate that particle shape is an important factor affecting the fracture mechanism in milling. Needle-shaped crystals of the β polymorph of D-mannitol were(More)
In order to classify the different cell types involved in signal transmission of the photoreceptive pineal organ of the goldfish, Carassius auratus, intra- and extracellular electrical responses were recorded from photoreceptors and second-order neurons. Photoreceptor responses to light consisted of hyperpolarizing potentials up to 30 mV. The responses were(More)
  • P M W P C Strandberg, Winifred F Clapp, R L Tank, W J C Kyhl, N Grant, R A Tepley +17 others
  • 2009
Work in the Microwave Spectroscopy Laboratory may be characterized as both pure and applied paramagnetics. We have been interested in the properties of paramagnetic materials, gases, liquids, and solids, and in the application of paramagnetic materials in quantum-mechanical or paramagnetic amplifiers. In general, the work involves an understanding of, and(More)
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