BIOPHYSICS: Spacing Out the Doughnuts
نویسندگان
چکیده
منابع مشابه
Plant Development: Spacing out Stomatal Pores
How do plants generate the optimal spacing of stomatal pores on their surfaces to prevent excessive water-loss, whilst allowing efficient gas exchange? New research into the ERECTA family of receptor-like-kinases has provided an important link in the cell-cell signalling pathways controlling this process.
متن کاملCounting maps on doughnuts
Abstract. How many maps with V vertices and E edges can be drawn on a doughnut with G holes? I solved this problem for doughnuts with up to 10 holes, and my colleagues Alain Giorgetti and Alexander Mednykh counted maps by number of edges alone on doughnuts with up to 11 holes. This expository paper outlines, in terms meant to be understandable by a nonspecialist, the methods we used and those u...
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The emergence of high-speed processors with 3D graphics acceleration and the accessibility of high-speed internet connections have propelled web 3D from a frustrating to a viable internet technology. Without a doubt, the addition of spatial dimension to customary 2D web graphics can be visually gripping. But greater potential for the technology lies beyond its ability to command attention. Web ...
متن کاملMaking doughnuts of Cohen reals
For a ⊆ b ⊆ ω with b \ a infinite, the set D = {x ∈ [ω] : a ⊆ x ⊆ b} is called a doughnut. A set S ⊆ [ω] has the doughnut property D , if it contains or is disjoint from a doughnut. It is known that not every set S ⊆ [ω] has the doughnut property, but S has the doughnut property if it has the Baire property B or the Ramsey property R . In this paper it is shown that a finite support iteration o...
متن کاملInterrogating nanoparticles with focused doughnuts
The propagation of electromagnetic radiation in free-space is described by the source-free Maxwells equations. In contrast to conventional solutions such as infinite-energy plane waves and Gaussian pulses, there exists a family of exact solutions which represent localised transmission of finite electromagnetic energy [1]. One such solution is known as the Focused Doughnut (FD) pulse a peculiar ...
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ژورنال
عنوان ژورنال: Science
سال: 2006
ISSN: 0036-8075,1095-9203
DOI: 10.1126/science.313.5788.737b