one of important issues nowadays is brain stem death . Brain stem death is defines as loss of central nervous system , cardiovascular and respiratory functions, where the person can not do spontenous breathing. This issue is related to organ transplantation and if this decision is ... إقراء المزيد

Pollens are the structures used to transport male DNA to the female part of a flower. There are new uses of pollen had been discovered. As pollen can be used for linking the assailant the victim to scene of the crime. It can help to know ... إقراء المزيد

Volatile substances abuse is oneof important problem that face the children and teenagers especially homeless children. They tend to abuse different substances as cola , benzene and sprays. These substances are very dangerous as they affect them socially, psychologically with deterioration of their education level. This ... إقراء المزيد