An enormous solar tornado was observed by SDO/AIA on 25 September 2011. It was mainly associated with a quiescent prominence with an overlying coronal cavity. We investigate the triggering mechanism of the solar tornado by using the data from two instruments: SDO/AIA and STEREO-A/EUVI, covering the Sun from two directions. The tornado appeared near to the active region NOAA 11303 that produced ...

The cover image is based on the Research Article A semi-analytical solution for displacement-controlled elliptical cavity expansion in undrained MCC soil by Hang Zhou et al., https://doi.org/10.1002/nag.3302.

this paper is a computational study of the behavior of aerodynamics  characteristics of an airfoil with blunt trailing edge and  studies the effects aerodynamic performance caused by modifications made to the trailing edge. blunt trailing edge airfoils are of interest in the engineering of large wind turbine blades because they allow for a strong structure with a high aerodynamic lift to struct...

A giant cavity is a huge excavation which involves the greater part of a lobe or a whole lobe. When it occupies more than one lobe, we do not speak of giant cavity but of lung emptying, “Vaciamento pulmonar.” There are two types of giant cavities; and their differentiation is important since the treatment varies with the type. The first is the inflated, hypertensive giant cavity with a check-va...

A Precisely-Controlled Multichannel Phononic Crystal Resonant Cavity novel multichannel PnC based energy-harvesting conceptual device with high localization effect and frequency resolution is reported in article number 2100250 by Luo co-workers. The configurations of cavities are designed the proposed two-stage topology optimization strategy using material-field series-expansion model. cover de...

We describe the design, construction, and characterization of a medium-finesse Fabry–Pérot cavity for simultaneous frequency stabilization of two lasers operating at 960 and 780 nm wavelengths, respectively. The lasers are applied in experiments with ultracold rubidium Rydberg atoms, for which a combined laser linewidth similar to the natural Rydberg linewidth (≈ 10 kHz) is desired. The cavity,...