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The ratios for most auxetic materials fall between 0 and –0.4, and the lowest previously reported values, –0.7 to –0.8, have been observed in specialized foams.The new crystal has a Poisson’s ratio of –1, meaning that it expands or contracts equally in two directions simultaneously.In Proceedings of the International Conference on Hardware/Software Codesign and System Synthesis (CODES ISSS), pp. Code Generation for Embedded Heterogeneous Architectures on Android.

Karsts represent hotspots of diversity and endemism, but are under-represented in protected areas and under significant threat.With many species only occurring on a single site, the lack of protection and research means that the loss of each karst represents an incalculable loss of biodiversity.Here we set to review the diversity, biodiversity patterns and biogeography of karst endemic plants of a number of families (Elatostema, Orchidea, Urticaceae, Gesneriaceae) across China and surrounding regions and understand specific aspects of their adaptive ecology.But some oddballs, called auxetic materials, thicken when stretched and thin when compressed.Now, researchers have used protein design to develop a synthetic auxetic material that expands or contracts equally in two directions when pulled or compressed, respectively.

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