منابع مشابه
Biorobotic insights into how animals swim.
Many animals maneuver superbly underwater using their pectoral appendages. These animals range from sunfish, which have flexible, low aspect ratio fins, to penguins, which have relatively stiff, high aspect ratio wings. Biorobotics is a means of gaining insight into the mechanisms these animals use for maneuvering. In this study, experiments were carried out with models of abstracted penguin wi...
متن کاملHow Spiroplasma might swim.
Spiroplasmas are small helical bacteria without rigid walls. They have a cytoskeleton in the form of a flat ribbon that runs the length of the cell. In an ordinary liquid medium, a cell spins about its long axis, but it does not translate. In a gel-like medium, containing a viscous agent like methylcellulose, it moves rapidly in a direction parallel to its long axis. Here I suggest how a cytosk...
متن کاملHow Should Microrobots Swim?
Microrobots have the potential to dramatically change many aspects of medicine by navigating through bodily fluids to perform targeted The International Journal of Robotics Research Vol. 28, No. 11–12, November/December 2009, pp. 1434–1447 DOI: 10.1177/0278364909341658 c The Author(s), 2009. Reprints and permissions: http://www.sagepub.co.uk/journalsPermissions.nav Figures 1, 3, 5–10 appear in ...
متن کاملSome Insights into How Nitrogenases Work
Nitrogenase, the biological catalyst for N2 fixation, occurs in widely diverse Eubacteria and Archaea, but not in Eukaryotes. It exists in three genetically distinct forms of the conventional nitrogenase, the well-known Mo-based system (Mo-nitrogenase) and two “alternative” systems, Vnitrogenase and Fe-nitrogenase. A fourth, completely unrelated Mo-based system also exists. All three convention...
متن کاملNew insights into how seeds are made
Citation: Sabelli PA and Larkins BA (2015) New insights into how seeds are made. It is difficult to overstate the importance of seeds for the evolutionary success of the spermato-phytes and the development of human cultures and their survival. For hundreds of millions of years since their appearance in the Devonian period, seed plants have colonized many environments , thanks in part to several...
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ژورنال
عنوان ژورنال: Journal of Biomechanics
سال: 2006
ISSN: 0021-9290
DOI: 10.1016/s0021-9290(06)84419-2