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An Examination Of Work Related Social Support In A Longitudinal Study Controlling For Negative Affectivity And Transient Mood, Brian J. O'Connell

USF Tampa Graduate Theses and Dissertations

Current research on organizational stress suggests a relationship between stressors, and psychological and psychosomatic health outcomes. The strength of this relationship varies between 0.17 and 0.35. Research has also suggested that personal relationships may moderate these correlations. One such variable is thought to be social support. This study set out to examine the relationship between social support in the workplace and organizational stressors while at the same time controlling for variables that may obscure the true nature of the relationship. Taking measurements while still seniors in college (Time one) and shortly after they were employed (Time two) allowed this control …

Simultaneous Extraction And Sorption Under Supercritical Conditions, Ş. Uğur Akman

USF Tampa Graduate Theses and Dissertations

Supercritical Exsorption (SCEXS), simultaneous supercritical extraction and sorption (adsorption and/or desorption), is a novel process which may have potential for applications in chemical, biochemical and environmental engineering. The system of interest consists of a fixed-bed packed with an adsorbent (e.g., activated carbon or catalyst) through which a so~vent stream (e.g., supercritical carbon dioxide) and a feed stream (e.g., an aqueous stream with low concentration of solute such as phenol) flow countercurrently.

In this work, the theoretical foundations of SCEXS have been established through distributed-parameter modeling which enables phenomenal description of several probable three-phase mass transfer dynamics taking place in the …