changes in the physicochemical conditions of process unit, even under control, may lead to what are generically referred to as faults. the cognition of causes is very important, because the system can be diagnosed and fault tolerated. in this article, we discuss and propose an artificial neural network that can detect the incipient and gradual faults either individually or mutually. the main fe...

Abstract INTRODUCTION The aim is to analyze the validity and safety of a new program laparoscopic common bile duct exploration (LCBE) in treatment choledocholithiasis (CD), evaluating hospital stay cost-effectiveness. MATERIAL AND METHODS Today, there controversy over which best therapeutic option choledocholithiasis: preoperative ERCP followed by cholecystectomy (LC) versus LCBE. We designed t...

The membrane-bound enzymes participating in the syntheses of the teichoic acid main chain and linkage unit have been solubilized with Triton X-100 and fractionated by sucrose density gradient centrifugation. Two main fractions were obtained: a heavy fraction, containing enzymes effecting synthesis of the main chain attached to the linkage unit, which was associated with only a small amount of l...