5,714 research outputs found
Swarming and Mating in \u3ci\u3eAedes Provocans\u3c/i\u3e (Diptera: Culicidae)
Male Aedes provocans formed canopy-level linear swarms in association with prominent trees along hedgerows or convex prominences along woodlot margins. Males oriented along the east-west or north-south axis of the swarm site and flew continuously in alternating directions along the longitudinal axis of the swarm. Swarming began shortly before (mean=-0.78 crep) and ended after sunset (mean=0.81 crep). The time of onset of swarming was more variable than the time of cessation; on 3 of 5 occasions, swarming stopped abruptly at 0.94 crep, about 2 minutes before the end of civil twilight. Swarming began 4 d after the onset of emergence of the adults and persisted for 3 weeks, but copulations were observed for only the first 6 d. In-flight mating always took place after sunset, many minutes after the onset of swarming. On average, copulation lasted 9.9 s
More about excited bottomonium radiative decays
Radiative decays of bottomonium are revisited, focusing on contributions from
higher-order relativistic effects. The leading relativistic correction to the
magnetic spin-flip operator at the photon vertex is found to be particularly
important. The combination of O(v^6) effects in the nonrelativistic QCD action
and in the transition operator moves previous lattice results for excited
Upsilon decays into agreement with experiment.Comment: 4 pages, 3 figures, published versio
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