Sarcoidosis is a systemic disease that is characterized with noncaseating granulomatous nodules which present in multiple organs specially lungs (90%) . Incidence of masses due to Sarcoidosis in upper extremity is low and most cases present in association with involvement of pulmonary hilary lymph nodes. In this article we present a rare case of Sarcoidosis which presented as a single soft ti...

In series double quantum dot with finite bias, strong current suppression by spinselection rule is expected. Before the current becomes zero starting from a certain initial condition, the transient current flows through the system. We theoretically argue this excess current, under which condition, becomes a simple fraction of charge quantum after being integrated in time. We also propose a sche...

OBJECTIVES To critically review the learning curve, safety issues and outcome of a single surgeon while starting up minimally invasive mitral valve surgery (MIMVS). METHODS We performed a descriptive, retrospective study of 138 patients with minimally invasive mitral valve surgery between March 2004 and December 2010. The learning curve was assessed using a logarithmic curve-fit regression an...

there are significant challenges associated with qualitative and quantitative nucleic acid tests performed in diagnostic laboratories. the development of internationally available certified reference materials which can be traced to reference measurements will contribute to a better understanding of the performance characteristics of nucleic acid tests and enhance reliability and comparability ...

We improve the current complexities for maintaining a chordal graph by starting with an empty graph and repeatedly adding or deleting edges.