Shorter or longer timeframes are used for alternately shorter or longer outlooks. Different mutations have been associated with shorter or longer survival. It is also slightly shorter in length. Ropinirole has a faster onset with shorter duration. At , it is only slightly shorter than Victoria Tower but much slimmer. Emissions may also be measured across shorter time periods. They are generally preferred for shorter commutes. Viola bows may be about shorter and heavier. Its inscriptions are fewer and generally shorter and rougher. It is suitable for studying effects with much shorter relaxation times than any other rheometer. This makes the mNIHSS shorter and easier to use. He labored with the prospect of a shorter than average life span. "Crises" saw Oldfield continue the pattern of one long composition with shorter songs. Other animals were selected for much shorter periods. Movies are shown on the screens for lengthier flights, or TV programmes on shorter flights.