Ignition of an ethylene fueled cavity in a supersonic flow was achieved through the application of two energy deposition techniques: a spark discharge and pulse detonator (PD). High-frequency shadowgraph and chemiluminescence imaging showed that the spark discharge ignition was passive with the ignition kernel and ensuing flame propagation following the cavity flowfield. The PD produced a high-...

multiple aorto-cardiac cavity communications is very rare but important complication of prosthetic aortic valve endocarditis. the case below illustrates multiple aorto-cardiac cavity fistula formation following prostethic aortic valve endocarditis presented with slowly progressive symptoms of heart failure. a brief review of surgical reconstruction and the existing literature are presented, inc...

We investigate a control of the motion of localized structures (LSs) of light by means of delay feedback in the transverse section of a broad area nonlinear optical system. The delayed feedback is found to induce a spontaneous motion of a solitary LS that is stationary and stable in the absence of feedback. We focus our analysis on an experimentally relevant system, namely the vertical-cavity s...

We plan to answer this question with the Munich micromaser in mind [1]. It consists of a superconducting cavity maintained at T = 0.3K. Hence, the average thermal photons present in the cavity is n̄th = 0.033. The cavity dissipation parameter κ = ν/2Q stands at 3.146 Hz with the cavity Q = 3.4×109 and ν being the masing frequency. A clever velocity selector sends Rb atoms in the upper of its two...