The National Weather Service officially ranked the tornado Sunday, April 15 as an EF2. It maintained that strength, as it crossed 30 miles into Greensboro and then Rockingham County. While we've ...
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).
Scientists have uncovered a new explanation for how swimming bacteria change direction, providing fresh insight into one of biology's most intensively studied molecular machines.
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