منابع مشابه
Sensing touch without touching
Molecular clockwork from cyanobacteria The cyanobacterial circadian clock oscillator can be reconstituted in a test tube from just three proteins—KaiA, KaiB, and KaiC—and adenosine triphosphate (ATP). Tseng et al. studied crystal and nuclear magnetic resonance structures of complexes of the oscillator proteins and their signaling output proteins and tested the in vivo effects of structure-based...
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Unequivocal proof that the activity of a localized cortical neuronal population provides sufficient basis for a specific cognitive function has rarely been obtained. We looked for such proof in monkeys trained to discriminate between two mechanical flutter stimuli applied sequentially to the fingertips. Microelectrodes were inserted into clusters of quickly adapting (QA) neurons of the primary ...
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It is critical for bacteria to recognize surface contact and initiate physiological changes required for surface-associated lifestyles. Ubiquitous microbial appendages called pili are involved in sensing surfaces and facilitating downstream behaviors, but the mechanism by which pili mediate surface sensing has been unclear. We visualized Caulobacter crescentus pili undergoing dynamic cycles of ...
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For robots to perform advanced manipulation in a world of unknowns, touch is a critical source of information, and a high-quality tactile sensor is essential. However, existing tactile sensors generally are low-resolution and/or non-compliant, making it difficult to capture detailed contact information for manipulation that humans are very good at. GelSight was first developed a few years ago t...
متن کاملOn Touching Triangle Graphs
In this paper, we consider the problem of representing graphs by triangles whose sides touch. We present linear time algorithms for creating touching triangle representations for outerplanar graphs, square grid graphs, and hexagonal grid graphs. The class of graphs with touching triangle representations is not closed under minors, making characterization difficult. We do show that pairs of vert...
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ژورنال
عنوان ژورنال: Nature Reviews Microbiology
سال: 2017
ISSN: 1740-1526,1740-1534
DOI: 10.1038/nrmicro.2017.150