alkaloids (PAs) by leaf beetles of the genus Platyphora were investigated. Tracer experiments with labeled alkaloids were performed with P. eucosma feeding on Koanophyllon panamense (Asteraceae, tribe Eupatorieae). P. eucosma catalyzes the same reactions previously demonstrated for P. boucardi specialized to Prestonia portobellensis (Apocynaceae): (i) epimerization of rinderine to intermedine; ...

4. G. D. Mostow, On the fundamental group of a homogeneous space, Ann. of Math. (2) vol. 66 (1957) pp. 249-255. 5. E. Specker, Die erste Cohomologie gruppe von Uberlagerungen und Homotopieeigenschaften dreidimensionaler Mannigfaltigkeiten, Comment. Math. Helv. vol. 23 (1949) pp. 303-333. 6. P. A. Smith, The fundamental group of a group manifold, Ann. of Math. (2) vol. 36 (1935) pp. 210-229. 7. ...

The life cycle of flowering plants alternates between two heteromorphic generations: a diploid sporophytic generation and a haploid gametophytic generation. During the development of the plant reproductive lineages – the germlines – typically, single sporophytic (somatic) cells in the flower become committed to undergo meiosis. The resulting spores subsequently develop into highly polarized and...

Computer aided detection of endolymphatic hydrops to aid the diagnosis of Meniere's disease 1. Introduction Chronic dizziness afflicts over 30% of elderly in the United States, yet remains difficult to manage because of the dearth of sensitive and specific diagnostic tests to differentiate its many potential causes [1,2,3]. Treatment typically involves multiple workups and consultations but oft...

BACKGROUND It is unclear how depressive symptoms in patients with heart failure develop over time and whether this trajectory of depressive symptoms is associated with hospital admission and prognosis. AIM To describe the time-course of depressive symptoms and determine the relationship with hospitalisation and mortality. METHOD Data was analysed using 611 patients with completed CES-D ques...