In 16 cadaver humeroulnar joints, the distribution of subchondral mineralisation was assessed by CT osteoabsorptiometry and the position and size of the contact areas by polyether casting under loads of 10 N to 1280 N. Ulnas with separate olecranon and coronoid cartilaginous surfaces showed matching bicentric patterns of mineralisation. Under small loads there were separate contact areas on the...

1. Sachs JD, Karim SSA, Aknin L, et al. TheLancet Commission on lessons for the future from COVID-19 pandemic. The Lancet 2022; 400(10359):1224–1280. https://doi.org/10.1016/S0140-.... CrossRef Google Scholar

A graph is called cubic and tetravalent if all of its vertices have valency 3 and 4, respectively. It is called vertex-transitive and arc-transitive if its automorphism group acts transitively on its vertex-set and on its arcset, respectively. In this paper, we combine some new theoretical results with computer calculations to construct all cubic vertex-transitive graphs of order at most 1280. ...

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Large-scale genetic analysis of the native inhabitants of Rapa Nui (Easter Island) reveals the expected combination of Polynesian ancestry with later European admixture, but also a contribution from Native Americans dating to 1280-1495 AD, demonstrating early trans-Pacific contact.