During bushfires, one of the building elements that is directly exposed to embers, radiant heat and direct flames “wall” element. This study investigated feasibility using expanded perlite aggregate in masonry (i.e., cement) blocks enhance their bushfire resistant characteristics. The chemical, physical, thermal properties were determined first then block cement mixes developed by replacing san...

Introduction: Recent studies suggest that impacts into highly porous target materials require a new cratering regime controlled by compressional effects (1). Such research is important for interpreting the geologic history of small bodies and for the upcoming Deep Impact mission in 2005. An alternative view (2) suggests that even highly porous targets (density of 0.2g/cc) undergo gravity contro...

ziba kazemi 1, abolghasem hasanpoor 2* department of horticultural science, agriculture and natural faculty, isfahan (khorasgan) branch, islamic azad university, isfahan, iran iranian plant protection research institut iran tehran * corresponding author email: [email protected] received:5 june 2015                                                                          accepted: 21 june 20...