This study focused on the development of a crack repair stick as a new repair method along with self-healing materials that can be used to easily repair the cracks in a concrete structure at the construction site. In developing this new repair technique, the self-healing efficiency of various cementitious materials was considered. Likewise, a crack repair stick was developed to apply to concret...

aims: needle stick accidents are a serious health risk for blood-borne infections among health care workers. this study was conducted to evaluate the frequency of needle stick injuries in health care workers and its related factors. instrument & methods: this cross-sectional study was carried on hcws of shahid beheshti hospital of kashan city, iran (270 individuals), from september 2013 to marc...