The third cycle appears in a 550-year frequency associated with severe drought.

But by 314 AD, the 15-year cycle had appeared.

Since its reproductive cycle appears to be based on various environmental triggers, it does not reproduce every year.

In the middle of the snowfields in my mind appear the cycles and us riding on them.

The second cycle appeared in the late 70's, after the oil embargo.

Each cardiac cycle appears as a peak, as seen in the figure.

In fact, for the Big Three, the cycle appears to have become inescapable.

The upward cycle for interest rates appears to be nearing an end.

In the 17th century, the solar cycle appeared to have stopped entirely for several decades; few sunspots were observed during this period.

And in 1958, the cycle appears to have come to a premature end.