background: the purpose of this study was to compare the effi cacy of endovac irrigation system and side-vented closed ended needle (max-i probe) in removing smear layer from root canals at 1 mm and 3 mm from working length using protaper rotary instrumentation. materials and methods: a total of 50 freshly extracted maxillary central incisors were randomly divided into two groups after complete...

Spin relaxation and decoherence is at the heart of spintronics spin-based quantum information science. Currently, theoretical approaches that can accurately predict spin general solids including necessary scattering pathways capable for ns to ms simulation time are urgently needed. We present a first-principles real-time density-matrix approach based on Lindblad dynamics simulate ultrafast soli...

Hair forms an evolving boundary between the inside and outside of body, it is both separate from us a part us. At same time strongly directed by culture norms. With this project, we disturb shift these norms describing set speculative design explorations on hair. We describe outline practices techniques that are emerging. As such paper constitutes report points towards possibility hair as arena...

background: nowadays pharmaceutical care departments located in hospitals are amongst the important pillars of the healthcare system. the aim of this study was to evaluate designing features and equipments of hospital drugstores affiliated with isfahan university of medical sciences. methods: in this cross-sectional study a self-defined and validated questionnaire was used which included all th...

Using a mobile photothermal probe we show that it is possible to detect rapidly different type of cracks (emerging ones or not), their width being a few micrometers and their depth being some hundredths of micrometers.