Better treatment and management strategies than landfilling are needed to address the large quantities of unrecycled plastic waste generated by daily human activities. Waste-to-energy conversion is an ideal benchmark for developing future large-scale waste management technologies. The present study explores a new approach for producing energetic materials by converting inert plastic waste into energy (thermal and mechanical energies) via a light-controlled process through the simple chemical activation of plastic waste, including polyethylene, polypropylene, and polyvinyl chloride.
View Article and Find Full Text PDFPlastic waste is a valuable organic resource. However, proper technologies to recover usable materials from plastic are still very rare. Although the conversion/cracking/degradation of certain plastics into chemicals has drawn much attention, effective and selective cracking of the major waste plastic polyethylene is extremely difficult, with degradation of C-C/C-H bonds identified as the bottleneck.
View Article and Find Full Text PDFJ Minim Invasive Gynecol
March 2007
Study Objective: To review the operative outcomes among different types of laparoscopic total hysterectomy (LH) classified according to the Munro and Parker classification system.
Design: Prospective observational cohort study (Canadian Task Force classification II).
Setting: 6 major public hospitals in Hong Kong.