Abstract Jet re-orientation associated with the time evolution of radio quasars explains formation X-shaped galaxies and their preference for isolated environments. But since are generally not found in dense environments (e.g., groups/clusters), jet phenomenon groups clusters has been ignored. We take a closer look at FRI jets respect to FRII jets, find that it may constitute as-yet unidentifie...

Abstract The alkali metal heat pipes are the critical transfer elements in pipe cooled reactors. However, there instabilities such as geyser boiling, resulting temperature oscillation and even threatening reactor safety. This work developed a coupled neutronic thermal-mechanical analysis method to analyze effects of boiling oscillations on parameters, e.g., stress, during operation. megawatt Me...