As smart structures are becoming increasingly ubiquitous in our daily life, the need for efficient modeling electromechanical coupling devices is also rapidly advancing. Smart structures are often made of piezoelectric materials such as lead zirconate titanate (PZT), which exhibits strong nonlinear behavior known as hysteresis effect under a large applied electric field. There have been numerous modeling techniques that are able to capture such an effect; some techniques are suitable for obtaining physical insights into the micro-structure of the material, while other techniques are better-suited to practical structural analyses.
View Article and Find Full Text PDFThe European Association for Clinical Pharmacology and Therapeutics (EACPT) is a leading society in Europe serving the European and global Clinical Pharmacology and Therapeutics community. Its specific aims include promotion of the utilisation and divulgation of the utility of clinical pharmacology services in health care delivery. EACPT currently has four active working groups (WGs): Education, Regulatory affairs, Clinical research and Young Clinical Pharmacologists (YCP WG).
View Article and Find Full Text PDFBackground: We studied the influence of ephedrine or phenylephrine infusion administered immediately after spinal anesthesia (SA) on hemodynamics in elderly orthopedic patients.
Methods: A prospective, randomized, double-blind, placebo-controlled study. After a subarachnoid injection of 15 mg of levobupivacaine, the participants received an infusion of either ephedrine 20 mg (E group), phenylephrine 250 mcg (P group) or saline (C group) within 30 min.