Among the mechanisms that control chromosome segregation in bacteria are highly-conserved partitioning systems comprising three components: ParA protein (a deviant Walker-type ATPase), ParB protein (a DNA-binding element) and multiple cis-acting palindromic centromere-like sequences, designated parS. Ten putative parS sites have been identified in the P. aeruginosa PAO1 genome, four localized i...

The astrolabe, an analog computing device, used to be the iconic instrument of astronomers during the Middle Ages. It allowed a multitude of operations of practical astronomy which were otherwise cumbersome to perform in an epoch when mathematics had apparently almost been forgotten. Usually made from wood or sheet metal, a few hundred instruments, mostly from brass, survived until today and ar...

Prior research has identified the importance of embodied action in establishing representational infrastructure during disruptions in interdisciplinary work. This study expands on such research by examining meetings of interdisciplinary museum design teams—including educators, designers, researchers, and museum professionals. In these meetings, the museum space (exhibition room) emerges as a bo...

Documentation of art museum collections has been traditionally written by and for art historians. To make art museum collections broadly accessible, and to enable art museums to engage their communities, means of access need to reflect the perspectives of other groups and communities. Social Tagging (the collective assignment of keywords to resources) and its resulting Folksonomy (the assemblag...

Guilan province is located in south and south-west of the Caspian Sea. Guilan is one of the richest and the most humid region in the country due to suitable climate, ample rainfall and many water sources (springs, rivers, creeks,..),. Despite the prevailing favorable conditions, limnological studies, especially in the mountainous regions of this province are limited. A limnological study was co...

abstract this article tries to look at the jewels of the ancient luristan (nowadays luristan province and some parts of ilam and kermanshah provinces), and to have a survey on this precious art and its typology. these jewels have been gathered by way of many scientific and unscientific excavations at last decades in the ancient sites like: kalmakareh, varkaboud, kalvali, sorkh dom, kamtarlan (k...