Abstract. This note reviews the Peano-Baker series and its use to solve the general linear system of ODEs. The account is elementary and self-contained, and is meant as a pedagogic introduction to this approach, which is well known but usually treated as a folklore result or as a purely formal tool. Here, a simple convergence result is given, and two examples illustrate that the series can be u...

occupational asthma has been reported  to  be the most  common  chronic respiratory occupational disease in many developed countries, and  as with other  occupational lung diseases, occupational asthma is potentially preventable. we report  the case of a 24-year-old baker who experienced pneumomediastinum as a consequence of workplace exposure. this is the first report of pneumomediastinum as a...

the subject handled in this study is the determination of antioxidant activities of extracts obtained from the urginea maritima (l.) baker plant’s leaves and tubers. extractions which were obtained using various solvents as methanol, ethanol, acetone and benzine. the antioxidant activity of the extracts was determined using β-karotene-linoleic acid system. moreover, the free radical scavenging ...