منابع مشابه
Further studies into interacting 3D cracks
The phenomenon of ageing structures has focused attention on the problem of multiple-site damage (MSD) and wide spread fatigue damage (WFD). In isolation each ̄aw or crack may be safe. However, the cumulative eect of multiple, interacting cracks may signi®cantly degrade the damage tolerance of the structure. This paper presents an overview of a new ®nite element alternating technique algorithm...
متن کاملHiding Within the Cracks: Case Report of Rare Sutural Bone Found at the Nasion
Pathology such as skull fractures can be misdiagnosed in the presence of anatomical variations. One variant that has had little description in the literature are the sutural bones associated with the nasal bones. Herein, we describe a case of a rare sutural bone at the nasion, between the bones of the right nasal, frontal, and maxillary frontal process. To our knowledge, this is the first repor...
متن کاملCracks in the ice
Last month, sea-ice cover in the Arctic extended to just 5.95 million square kilometres — 1.68 million square kilometres less than the average between 1979 and 2000. While native fauna such as polar bears are threatened by dwindling summer sea ice, commercial opportunities are opening up in this newly accessible summer sea and are being pursued apace. The first commercial supertanker succeeded ...
متن کاملCracks in topological rigidity
Topological rigidity is an analogue of the Baum-Connes conjecture, and is motivated by Mostow rigidity and Margulis superrigidity. I will discuss some of the places where this heuristic reasoning fails, and the rigidity shows some cracks – that are rather different than the places where strong forms of the Baum-Connes conjecture fails.
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ژورنال
عنوان ژورنال: Nature
سال: 1988
ISSN: 0028-0836,1476-4687
DOI: 10.1038/331471c0