急求：《geometry and mechanics in the opening of chiral seed pods》 SCIENCE SEPTEMBER 2011上的

9月18号在哪可以看到高达00剧场版?~

日本的动漫和剧场版进入中国的时间是不一样的 动漫基本上刚刚在日本发完之后就会直接到中国来 而剧场版到中国还要经过一系列的手续 忙玩之后基本上就要等明年了= = 估计要明年4月份才能看到高达oo的剧场版 9月18号就想看到的话 估计也就只能在日本了

早没了，现在在日本的一个什么钢铁工厂里

Geometry and Mechanics in the Opening of Chiral Seed Pods.

Home » Latest PubMed Articles » Science (New York, N.Y.) » Geometry and Mechanics in the Opening of Chiral Seed Pods.
Summary

We studied the mechanical process of seed pods opening in Bauhinia variegate and found a chirality-creating mechanism, which turns an initially flat pod valve into a helix. We studied con�gurations of strips cut from pod valve tissue and from composite elastic materials that mimic its structure. The experiments reveal various helical con�gurations with sharp morphological transitions between them. Using the mathematical framework of "incompatible elasticity," we modeled the pod as a thin strip with a flat intrinsic metric and a saddle-like intrinsic curvature. Our theoretical analysis quantitatively predicts all observed con�gurations, thus linking the pod's microscopic structure and macroscopic conformation. We suggest that this type of incompatible strip is likely to play a role in the self-assembly of chiral macromolecules and could be used for the engineering of synthetic self-shaping devices.

Affiliation

Racah Institute of Physics, Hebrew University of Jerusalem, Jerusalem 91904, Israel.

Journal Details

Name: Science (New York, N.Y.)
ISSN: 1095-9203
Pages: 1726-1730

Links

PubMed Source
DOI Link
MESH Definitions

Mechanics

The branch of physics which deals with the motions of material bodies, including kinematics, dynamics, and statics. When the laws of mechanics are applied to living structures, as to the locomotor system, it is referred to as BIOMECHANICS. (From Dorland, 28th ed)

Papaver

A genus of Eurasian herbaceous plants, the poppies (family PAPAVERACEAE of the dicotyledon class Magnoliopsida), that yield OPIUM from the latex of the unripe seed pods.

Peas

A variable annual leguminous vine (Pisum sativum) that is cultivated for its rounded smooth or wrinkled edible protein-rich seeds, the seed of the pea, and the immature pods with their included seeds. (From Webster's New Collegiate Dictionary, 1973)

Thlaspi

A plant genus of the family BRASSICACEAE that is grown in rock gardens. T. arvense is grown for its large, round ornamental seed pods. The common name of pennycress usually refers to this genus but may also refer to the genus Microthlaspi.

Peptoids

Polymers of N-SUBSTITUTED GLYCINES containing chiral centers at the a-position of their side chains. These oligomers lack HYDROGEN BONDING donors, preventing formation of the usual intrachain hydrogen bonds but can form helices driven by the steric influence of chiral side chains.

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珠晖区19388953459： 急求:《geometry and mechanics in the opening of chiral seed pods》 SCIENCE SEPTEMBER 2011上的要英文全文拜托拉我们作业要翻译 - ？
时可永迪：[答案] Geometry and Mechanics in the Opening of Chiral Seed Pods. Home » Latest PubMed Articles » Science (New York,N.Y.) » Geometry and Mechanics in the Opening of Chiral Seed Pods. Summary We studied the mechanical process of seed pods ...

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