In a “normal” electrocardiogram (ECG), the transition of the QRS axis in the precordial leads occurs between leads V 3 and V 4 (i.e., there is a dominant S in V 3 and a dominant R in V 4).

Controlling the rotation of this molecule could lead to new technologies for microelectronics, quantum computing and more. You can easily rotate a baseball in your hand by twisting your fingers. But ...

A single-crystal Au(111) sample was cleaned by repeated cycles of neon ion sputtering and annealing to 700 K. The molecular motors were deposited on a cleaned Au(111) sample (held at ∼120 K) by ...

I believe an error has been made in the description of the first electrocardiogram of Case 29–1965 of the Case Records of the Massachusetts General Hospital. Dr ...