In the past few decades, in-flight icing has become a common problem for many missions, potentially leading to reduction in control effectiveness and flight stability, which would threaten safety. One of most popular methods address this is adaptive control. This paper establishes dynamic model an iced high-altitude long-endurance unmanned aerial vehicle (HALE-UAV) with disturbance measurement ...

In seven patients with symptomatic atrial fibrillation and uncontrollable ventricular rates, selective catheterization of the atrioventricular (AV) nodal artery was performed to chemically destroy the AV node. Ethanol at a concentration of 96% and a dose of 0.5-2 ml was used after selective catheterization of the AV nodal artery had demonstrated temporary AV block after the administration of is...

The stage is set for an e laborate game, the walls and floor a reagr id l ike chessboard domina ted by the playing-card por t ra i t s of the King and Queen and the black brooding archway leading to a hideaway tunnel, A game must begin decisively, with some positive action, y e t before the audience has quite-set t led down, almost unnot iced , the first of the players enters and begins to chan...