darabgird is one of the ancient cities in fars province. according to iranian mythology, darab shah (dariush, the great) found the city in the achaemenid period. but, due to the fact that 1.21% of total ceramics gathered from the city belongs to the parthian era, we can accept that the city remained in use since parthian period to the islamic era. data analysis shows that the city had a strong...

Evaluation of ECMWF ERA-40 temperature and wind in the lower tropical stratosphere since 1988 from past long-duration balloon measurements T. Christensen, B. M. Knudsen, J.-P. Pommereau, G. Letrenne, A. Hertzog, F. Vial, J. Ovarlez, and M. Piot Danish Meteorological Institute, Copenhagen, Denmark Service d’Aéronomie, IPSL/CNRS, Verrières-Le-Buisson, France Centre National d’Études Spatiales, To...

A graph G has a representation modulo r if there exists an injective map f : V (G) → {0, 1, . . . , r − 1} such that vertices u and v are adjacent if and only if f(u) − f(v) is relatively prime to r. The representation number rep(G) is the smallest positive integer r for which G has a representation modulo r. In this paper we study representation numbers of the stars K1,n. We will show that the...

BACKGROUND Bedside teaching is a patient-based teaching method in medical education. The present study has been conducted with the aim of investigating the quality of bedside teaching in the internal wards of Qaem and Imam Reza Educational Hospitals. METHODS This study follows a mixed qualitative-quantitative approach using checklists on educational clinical rounds in Imam Reza and Qaem Hospi...

Fatemeh Ghasemi, J. Peinke, M. Reza Rahimi Tabar, and Muhammad Sahimi Department of Physics, Sharif University of Technology, Tehran 11365, Iran Carl von Ossietzky University, Institute of Physics, D-26111 Oldenburg, Germany CNRS UMR 6529, Observatoire de la Côte d’Azur, BP 4229, 06304 Nice Cedex 4, France Department of Chemical Engineering and Materials Science, University of Southern Californ...