Here something stubborn comes, Dislodging the earth crumbs And making crusty rubble. It comes up bending double, And looks like a green staple. It could be seedling maple, Or artichoke, or bean. That remains to be seen. —Richard Wilbur, " Seed Leaves " (1–8) Whether reading or writing mathematics, it is over the simplest theorems that we linger. Something quickens at the hope that such a theore...

OBJECTIVE To assess the clinical evidence on the effectiveness of any medical intervention for preventing or treating alcohol hangover. DATA SOURCES Systematic searches on Medline, Embase, Amed, Cochrane Central, the National Research Register (UK), and ClincalTrials.gov (USA); hand searches of conference proceedings and bibliographies; contact with experts and manufacturers of commercial pre...

Artichoke (Cynara scolymus L.), a medicinal plant with high economic value, contains levels of phenolic compounds; especially cynarine, which plays an important role in preventing cancer, cardiovascular disease, osteoporosis, diabetes and neurodegeneration, etc. Currently, micropropagation has achieved some success; however, the rooting efficiency plantlet quality are still limited. In this stu...