Yet he has persevered, for two reasons.
While some rumba groups, like Los Munequitos and Yoruba Andabo, have persevered for decades, new ones continue to form.
"Perhaps she would have persevered for longer before settling than the present prime minister and raged more mightily.
"For us, it was a story about a guy who has persevered for all these years," said John Brandt, general manager of the Riversharks.
Traditional Jewish family law has persevered for hundreds of years and rules covering marriage, the raising of children, and divorce are well established; yet pressures from modern society are causing long held views to be re-examined.
Shell insisted that its decision was principally motivated by an apparent lack of oil in the area, but opponents of Arctic drilling insisted that the growing campaign against Shell's Alaskan campaign had played a significant role and that, without it, the company would have persevered for longer before giving up.
Bettie Serveert -- a Dutch band whose leader, Carol van Dijk, sings in fluent English -- has persevered for more than a decade on the collegiate-rock circuit with observant songs about romantic ups and downs, continually expanding a musical vocabulary that now stretches from pop tunefulness to indie-rock guitar furor to the easy-rolling incantations of Van Morrison.
Their book offers thorough, easy-to-understand answers to questions that patients with dissections have, and tell the stories of patients who have persevered for years after their dissections.
For example, in sample (f) which contains as large as 100 μM with 30.0 g/L PVA in water, owing to effectively large NG cluster size, the signal has changed slowly and the correlation had persevered for a long time compared to sample (b).
