The radiation-sensitive nature of halide perovskites has hindered structural studies at the atomic scale. We overcome this obstacle by applying low dose-rate in-line holography, which combines aberration-corrected high-resolution transmission electron microscopy with exit-wave reconstruction. This technique successfully yields the genuine atomic structure of ultrathin two-dimensional CsPbBr3 ha...

Equivalence between two argumentation systems means mainly that the two systems return the same outputs. It can be used for different purposes, namely in order to show whether two systems that are built over the same knowledge base but with distinct attack relations return the same outputs, and more importantly to check whether an infinite system can be reduced into a finite one. Recently, the ...

Research on entrepreneurial exit has established itself as a more recognized component of the entrepreneurial process and a distinctive domain of entrepreneurship research. Despite the progress made, there still exists important topics within entrepreneurial exit where scholarly understanding is scant. This special issue discusses new and open topics of research on entrepreneurial exit. Three p...

Abstract This paper explores entrepreneurs’ initially intended exit strategies and compares them to their final paths using an inductive approach that builds on the grounded theory methodology. Our data shows differ among entrepreneurs. Two groups of entrepreneurs emerged from our data. The first group comprises who financed firms through equity investors. second is made up businesses solely wi...

background: the shielding methods in radiotherapy due to delivering an accurate radiation dose to cancer tissues and avoiding unnecessary dose to normal tissues are very important. these methods include lead standard blocks, individual molding and multi leaf collimator (mlc). the mlc method is not still common in iran radiotherapy centers. individual molding is better than the lead block shield...

We report a patient with a systemic vasculitis and heart involvement with complete atrio-ventricular block. After pacemaker implantation, the stimulation threshold significantly increased resulting in exit block. Two adjunctive ventricular leads were implanted with temporary threshold improvement. Oral glucocorticoids decreased the stimulation threshold with a transient, dose-dependent efficacy...