Destruction of rocks and artificial composites is carried out in various ways. One the most common methods impact fracture. The conical pick JCB HM380 hydraulic breaker was used as tool. experimental study rock fracture on an composite—concrete. depth penetration into concrete test parameter. model based Professor V. B. Sokolinsky. The developed this work takes account degree bluntne...

how to cite this article: shalbafan b. a family case report of niemman pick c with new mutation and different presentations. iran j child neurol. 2015 autumn;9:4(suppl.1): 20-21.   pls see pdf.