BACKGROUND AND PURPOSE Perfusion MRI can be used to identify patients with acute ischemic stroke who may benefit from reperfusion therapies. The risk of nephrogenic systemic fibrosis, however, limits the use of contrast agents. Our objective was to evaluate the ability of arterial spin labeling (ASL), an alternative noninvasive perfusion technique, to detect perfusion deficits compared with dyn...

Resonant converters are included in a wide range of converters. The strategy of using one is to design a highly efficient converter while eliminating a common disadvantage of traditional implementations based on Pulse-Width Modulation (PWM) – high switching losses. Many different solutions have been suggested, implemented, and tested in recent years, and many of them are now widely used in comm...

All proteins are capable of recognizing and binding specific molecules such as other proteins, cofactors, prosthetic groups or drugs. Efforts to understand the mechanisms controlling selective binding were initially prompted by the realization that recognition and binding are universal features of all biochemical processes. These efforts have intensified with the awareness that knowledge-based ...

Abstract A remarkable number of scientific papers are available in the literature about bulk amorphous alloys and metallic glasses. Today, DSC is an essential tool for research development, course quality assurance. In many cases, users seek to examine determination only one or two properties, although much more information can be obtained from measurements. The involved structural relaxation, ...