Tepe Sagzabad, a site situated on the Qazvin Plain of north-central Iran, was excavated from 1970 to 1998 by the Institute ofArchaeology of Tehran University. Recent excavations by H. Tala’i (1997-1999) yielded some metal artifacts dating to theEarly Iron Age. Ten of these copper-based samples were investigated using inductively coupled plasma optical emissionspectroscopy (ICP-OES), scanning el...

the hoard of kalmakarreh includes hundreds of golden and silver wares that were incidentally discovered by a local hunter in 1987 at a northwest 20 kilometer distance to pol-e dokhtar in province of lorestan. the collection includes a variety of dishes, raytheon, human and animal sculptures, masks, plaques, jewelry,… that belongs to the neo- elamite (first millennium bc). this research led to t...

Recently, many in vitro studies evaluating the effects of nanoparticles on cellular physiology have been reported. In in vitro systems, the nano-objects induce not only primary effects but also confounding (artificial) effects. Investigations into the physiological and pathological effects induced in cells by in vitro exposure to nano-objects may be confounded by the specific physical and chemi...

The DNA structure is an ideal building block for the construction of functional nano-objects. In this direction, metal coordinating base pairs (ligandosides) are an appealing tool for the future specific functionalization of such nano-objects. We present here a study, in which we combine the metal ion coordinating pyrazole ligandoside with the interstrand crosslinking salen ligandoside system. ...

Background. Aspirated thumbtacks are difficult to extract as the sharp edge of the thumbtack often is well imbedded within bronchial wall and its removal is technically demanding and may cause complications such as bronchial mucosal tear and bronchial wall perforation. These sharp metal objects are commonly removed using rigid bronchoscopy since their removal through flexible bronchoscopy is co...