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相关概念视频

Fischer Projections02:18

Fischer Projections

13.1K
Learning to draw Fischer projections of molecules and understanding their relevance plays a crucial role in the visual depiction of organic molecules. A Fischer projection is a two-dimensional projection on a planar surface to simplify the three-dimensional wedge–dash representation of molecules. This is especially helpful in the case of molecules with multiple chiral centers that can be difficult to draw. Here, all the bonds of interest are represented as horizontal or vertical lines.
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¹H NMR of Conformationally Flexible Molecules: Temporal Resolution00:52

¹H NMR of Conformationally Flexible Molecules: Temporal Resolution

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At room temperature, the chair conformer of cyclohexane undergoes rapid ring flipping between two equivalent chair conformers at a rate of approximately 105 times per second. These two chair conformers are in equilibrium. The rapid ring flipping results in the interconversion of the axial proton to an equatorial proton and an equatorial to the axial proton. Such interconversions are too rapid and cannot be detected on the NMR timescale. Hence, the NMR spectrometer cannot distinguish between the...
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相关实验视频

Updated: Jun 12, 2025

Modeling an Enzyme Active Site using Molecular Visualization Freeware
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Modeling an Enzyme Active Site using Molecular Visualization Freeware

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阶段减小解释了金像体的形状:当多体相互作用重要时

Erik T K Mau1, Oleh E Omel'chenko1, Michael Rosenblum1

  • 1Department of Physics and Astronomy, <a href="https://ror.org/03bnmw459">University of Potsdam</a>, Karl-Liebknecht-Str. 24/25, D-14476 Potsdam-Golm, Germany.

Physical review. E
|September 19, 2024
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概括
此摘要是机器生成的。

我们将Kuramoto-Sakaguchi模型扩展到对合非相同的斯图尔特-兰多振荡器的第二阶段近似. 这种增强的模型准确地捕捉了奇默状态,与更简单的模型不同.

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科学领域:

  • 复杂的系统复杂的系统.
  • 非线性动力学是一种非线性动力学.
  • 网络科学 网络科学

背景情况:

  • 库拉莫托-萨卡古奇模型是研究合振荡器的标准.
  • 复杂的网络动态需要更高阶的近似值.
  • 非局部合振荡器中的奇默状态是当前的研究重点.

研究的目的:

  • 将Kuramoto-Sakaguchi模型扩展到第二阶段近似.
  • 在网络中分析非相同的斯图尔特-兰多振荡器的动态.
  • 为了调查喜梅拉状态的出现和特征.

主要方法:

  • 对于合振荡器来说,导出二阶相近似值.
  • 对一组非相同的斯图尔特-兰多振荡器进行分析.
  • 适用于非局部合的系统,表现出嵌合体状态.

主要成果:

  • 合矩阵直接转化为相方程合结构.
  • 第二阶相模型重现了嵌合体形状对合强度的依赖.
  • 一级模型无法捕捉这种依赖性,突出显示了高阶缩小的重要性.

结论:

  • 衍生的二阶相模提供了更准确的描述复杂的振荡网络.
  • 这项工作在相位模型中建立了网络合矩阵和多体相互作用之间的联系.
  • 这些发现有助于我们更好地理解幽默状态和网络动态.