On the Use of Wavelet Transform for Quench Precursors Characterisation in the LHC Superconducting Dipole Magnets

Premature training quenches are caused by transient energy released within the magnet coil while it is energized. Signals recorded across the so-called quench antenna carry information about these disturbances. A new method for identifying and characterizing those events is proposed, which applies the wavelet transform approach to the recorded signals. Such an approach takes into account the time of occurrence as well as frequency content of the events. The choice of the optimal mother wavelet is discussed, and the results obtained from the application of the method to actual signals are given. The criteria to recognize the interesting events are presented as well as the methodology to classify their global behavior

The eye may be the spy of injury related to NIV interface and prone positioning

we describe the ocular trauma related to the combined prolonged NIV use via an oro-nasal interface and lateral-positioning of a patient affected by COVID19 severe ARDS. Great caution should be taken with these patients due to the potential onset of side effects “The eye may be the spy of interface/NIV related injury”