Scot R Randle

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Six rats were trained to press a lever for a liquid food reward on a multiple fixed ratio--fixed interval (FR--FI) schedule of reinforcement. When lever-pressing rates became relatively stable, the animals were exposed to 150 ppm of either acetone or toluene for duration times of 1/2, 1, 2 and 4 hr. Exposures were conducted at least three weeks apart.(More)
Samples of magnesium stearate monohydrate and dihydrate were used to prepare standard mixtures of known pseudopolymorphic composition. Near infrared spectra (NIR) of the standard mixtures were measured to develop multivariate calibration models for the pseudopolymorphic composition of magnesium stearate by partial least squares (PLS) regression. Magnesium(More)
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