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Biomedical subjects

D L Lee

Publications and source records attributed to D L Lee.

At least 109 records · Page 6Linked to original sources
PubMedDate not supplied

The accumulation, distribution and viability of human parasitic nematode eggs in the sludge of a primary facultative waste stabilization pond.

Investigations into the enumeration, distribution and viability of nematode eggs in the sludge from a primary facultative waste stabilization pond showed that pond sludges are not nematologically safe for immediate land application. Up to 12% of Ascaris lumbricoides eggs were viable after the pond had been in operation for 2.5 years. Eggs were recovered from the sludge along the full length of the pond, although there were significant decreases in egg concentration and viability with increasing distance from the inlet.

Animals↗
PubMedDate not supplied

The effects of mastery training and explicit feedback on task design preference in a vocational setting.

The purpose of this study was to examine the effects of mastery training and explicit feedback on the selection behavior of two individuals with severe mental retardation across two different vocational task designs. The two design options were (a) a site-based (traditional) approach, and (b) a more efficient motion-economy based approach. The site-based design was developed from workshop-standard task analyses. The motion-economy design was developed by re-configuring the site-based design using principles of motion economy and resulted in less distance movement required for task completion. The study was comprised of four assessment phases: (a) no experience (i.e., participant had no experience with either site-based or motion-economy based designs), (b) after training (i.e., participant was trained to criterion level on both design options), (c) training and timer, and (d) training, timer, and work incentives. Selection behavior was affected by task efficiency, only when efficiency was made more salient by pairing task cues with work incentives.

Adult↗