منابع مشابه
Skimming the surface of underwater landslides.
Around 8,200 years ago, a 180-mile-wide section of the ocean floor off the coast of Norway reached a tipping point. Several thousand years prior, ice streams from melting glaciers had been carrying trillions of tons of sediment to the ocean. Over time, the sediment had accumulated at the edge of the continental shelf, where the shallower ocean floor around Scandinavia plunges toward the depths ...
متن کاملThe surface-skimming hypothesis for the evolution of insect flight
The surface-skimming hypothesis for the evolution of insect flight poses that insects first used wings and aerodynamic locomotion to move in two dimensions across water surfaces. Here I present an overview of recent advances in our understanding of surface-skimming locomotion, and how these findings relate to phylogenetic origins of insects and developmental and anatomic origins of insect wings...
متن کاملSkimming the surface: a brief history of skin conditions.
The first clinical descriptions of skin conditions and their treatments date back to 1600 BCE in ancient Egypt, where medicinal healers treated such conditions as psoriasis, ulcers, alopecia, hypertrichosis, and scabies. Hippocrates, Pluto, and Aristotle, ancient Greek physicians, adopted Egyptian healing traditions for skin disorders and coined many of the technical terms, such as alopecia, ex...
متن کاملSkimming the surface with Burgess Shale arthropod locomotion.
The first arthropod trackways are described from the Middle Cambrian Burgess Shale Formation of Canada. Trace fossils, including trackways, provide a rich source of biological and ecological information, including direct evidence of behaviour not commonly available from body fossils alone. The discovery of large arthropod trackways is unique for Burgess Shale-type deposits. Trackway dimensions ...
متن کاملThe rational skimming theorem
We define the notion of K-covering of automata with multiplicity (in a semiring K) that extend the one of covering of automata. We make use of this notion, together with the Schützenberger construct that we have explained in a previous work and that we briefly recall here, in order to give a direct and constructive proof of a fundamental theorem on N-rational power series. In a previous work (c...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Nature
سال: 2005
ISSN: 0028-0836,1476-4687
DOI: 10.1038/435893a