from short conference papers, should be seen as a preliminary presentation of results. Two clear conclusions emerge: the complexities of the ancient trade in staple foodstuffs, particularly grain, and the success achieved by the classical conquest cities, Athens and Rome, and to some extent Carthage and Alexandria, in securing a generally adequate food supply for the citizen inhabitants of the ...

objective: this research aimed at evaluating the moderator role of school connection on the impact of violent friends towards aggressive behaviors in adolescent students of tehran high schools. methods: a sample of 3529 participants from tehran high school students was selected using multistage sampling method. participants completed school connection questionnaire (scq), iranian adolescents ri...

The history of Arabian medicine can only be studied satisfactorily in conjunction with the general history of Islam, which began to assume political importance in AD 622. In that year, the prophet Mohammed united the warring tribes of Arabia through a common religious and social ideal. This vision enabled the Arabs to conquer half of the known world and to build an empire destined to replace th...

Background: Providing health facilities and attention to the physical and mental health of students are very important and it can affect the amount of their learning. The purpose of this study was the investigation of the environmental health status and safety of public and non-public elementary schools of Mashhad-Iran. Method: In this descriptive cross-sectional study, 100 public and non...