Nomex honeycomb composite (NHC) has been increasingly used in the automotive, aerospace and defence applications due to its excellent thermal and mechanical properties. Its complex cellular hexagonal thin-walled configuration along with heterogeneous, soft and brittle nature pose substantial processing defects such as burr formation, tearing of walls, surface roughness, dimensional inaccuracy and low machining quality during conventional machining (CM). These surface defects have a substantial influence on the operating life and functional performance of its sandwiched structural members.
View Article and Find Full Text PDFObjective: To assess the risk factors, frequency and transience rate for ventilator-associated pneumonia in geriatric patients.
Study Design: Cross-sectional, descriptive study.
Place And Duration Of Study: Various campuses of Ziauddin University Hospital and Civil Hospital, Karachi, from April 2016 to May 2017.