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Termination of Translation01:44

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The large ribosomal subunit has several important structures essential to translation. These include the peptidyl transferase center (PTC) - which is the site where the peptide bond is formed - and a large, internal, water-filled tube through which the nascent polypeptide moves. This latter structure is called the Peptide Exit Tunnel, and it begins at the PTC and spans the body of the large ribosomal subunit. During translation, as the nascent polypeptide chain is synthesized, it passes through...
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Standard Enthalpy of Formation02:37

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Enthalpy changes are typically tabulated for reactions in which both the reactants and products are at the same conditions. A standard state is a commonly accepted set of conditions used as a reference point for the determination of properties under other different conditions. For chemists, the IUPAC standard state refers to materials under a pressure of 1 bar and solutions at 1 M and does not specify a temperature. Many thermochemical tables list values with a standard state of 1 atm. Because...
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Ionic crystals consist of two or more different kinds of ions that usually have different sizes. The packing of these ions into a crystal structure is more complex than the packing of metal atoms that are the same size.
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Crystallization is a phase transformation process in which crystals are precipitated from a supersaturated solution or formed from other sources. During crystallization, atoms or molecules arrange themselves into a well-defined, rigid crystal lattice to minimize energy.
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Crystal Field Theory
To explain the observed behavior of transition metal complexes (such as colors), a model involving electrostatic interactions between the electrons from the ligands and the electrons in the unhybridized d orbitals of the central metal atom has been developed. This electrostatic model is crystal field theory (CFT). It helps to understand, interpret, and predict the colors, magnetic behavior, and some structures of coordination compounds of transition metals.
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通过设计的卷轴-卷轴粒子间堆叠,以终端指导的超分子液晶形成.

Tianren Zhang1,2, Yi Shi1, Jacob R Schwartz1

  • 1Department of Materials Science and Engineering, University of Delaware, Newark, Delaware 19716, United States.

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概括
此摘要是机器生成的。

通过可编程端到端堆叠,计算机设计的可以自组合成液晶相. 这种分子设计控制着宏观性质,使新的基于的材料成为可能.

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卷曲的卷曲的卷曲的卷曲计算设计的设计.粒子间相互作用的相互作用.液晶水晶的液体晶体是什么液体 - 液晶相分离的方法分子模拟分子模拟自动组装的自动组装机

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科学领域:

  • 生物分子工程 生物分子工程
  • 材料科学 材料科学 材料科学
  • 超分子化学 超分子化学

背景情况:

  • 了解的自我组装对于设计先进材料至关重要.
  • 从序列级信息控制层次结构是一个重大挑战.

研究的目的:

  • 展示一个模拟指导的框架,用于设计具有可预测的液晶态行为的.
  • 调查终端残留物相互作用在的自我组装和相位形成中的作用.

主要方法:

  • 单一电荷类型 (SC) 卷轴-卷轴的计算设计.
  • 实验性描述液晶液体 (LC) 阶段的热性.
  • 分析度,盐效应和终端残留物相互作用.

主要成果:

  • 通过端到端堆叠,SC卷-卷可以自组装成多个LC阶段 (nematic,六角柱状,smectic A,smectic B).
  • 终端残留物相互作用 (N-终端灵活性,C-终端吸引力) 决定了堆叠和临界LC形成度 (CLC).
  • 托介导的交联增强了液晶的机械性能.

结论:

  • 序列级设计可以可预测地控制宏观液晶阶段行为.
  • 卷轴的端到端堆叠为新材料设计提供了一种多功能策略.
  • 这种方法为设计具有量身定制性质的基材料提供了一个蓝图.