منابع مشابه
Growing Cells Push Back under Pressure
In both plants and animals, the interplay between mechanical force generation and mechanical sensing plays a stabilizing role in many developmental processes. Uyttewaal et al. now demonstrate that cells in the Arabidopsis shoot apical meristem respond to local mechanical stresses by reorienting their growth, thereby guiding morphogenesis. Notably, the mechanism underlying such guidance is ampli...
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INTRODUCTION Doing repetitive push-ups is among the most common exercise for the upper body and shoulder stabiliser muscle strength training. However, adverse effects such as neck pain, back pain, palmar pain and wrist pain have been reported. To date, to our knowledge, palmar pressure when performing push-ups has not been previously reported. We hypothesised that various hand positions during ...
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The progressive privatization of Internet infrastructure in the U.S. throughout the 1990s fostered the resurgence of a mass media-style "pipeline" model of online content distribution favored by the media and entertainment industries. Nonetheless, and despite various attempts at suppression by corporations and law enforcement, a diverse community of artists, activists and citizens has found the...
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Push back design as a complex task, is one of the major steps in the open pit mines planning. Push backs can be generated by varying economic factors such as commodity price, mining cost, processing cost, etc. Another important issue in generating push backs is grade uncertainty, which can cause the problem be more complex. Conventional methods of push back design ignore grade uncertainty. To o...
متن کاملGrowing random networks under constraints
In recent years measurements on a wide variety of networks such as the world wide web [13,2], the internet backbone [4], social networks [3,24,26] and metabolic networks [14,25] have shown that they differ significantly from the classic Erdos-Renyi model of random graphs [17]. While the traditional Erdos-Renyi model has a Poisson link distribution, with most nodes having a characteristic number...
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ژورنال
عنوان ژورنال: Cell
سال: 2012
ISSN: 0092-8674
DOI: 10.1016/j.cell.2012.03.019