BACKGROUND Inhaled beta-agonist therapy is central to the management of acute asthma. This review evaluates the benefit of an additional use of intravenous beta(2)-agonist agents. OBJECTIVES To determine the benefit of adding intravenous (IV) beta(2)-agonists to inhaled beta(2)-agonist therapy for acute asthma treated in the emergency department. SEARCH METHODS Randomised controlled trials ...

The railway industry has focused on the improvement of maintenance through use novel technologies. Recently, utilisation repair welding to restore worn area wheels been investigated, as it can bring significant savings in wheelset maintenance. Under an Innovate UK AURORA project, a wheel that previously operated London Underground (LUL) was restored using this process. To test its performance a...

A suspension system is one of the integral parts a hyperloop capsule train, which used to isolate car-body from bogie vibration provide safer and comfortable service. semi-active best candidates for its advantageous features. The performance relies greatly on control strategy applied. In this article, Skyhook (SH) mixed Skyhook-Acceleration Driven Damper (SH-ADD) controlling algorithms are adop...

Abstract In order to effectively deal with the problems in allowable fatigue strength data of weld joints steering structures, it is necessary carry out comparative tests and analyses according various structural stress methods data. Therefore, on basis understanding applied standard bogie welded structure China, aiming at application present stage, this paper constructs diagram S-N curve Q345 ...

Indian Rail transport is one of the major mode of transportation, so it must offer high comfort level for the passengers and the staff. However, the comfort that passengers experience is a highly complex and individual phenomenon. The improvement of passenger comfort while travelling has been the subject of intense interest for many train manufacturers, researchers and companies around the worl...