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相关概念视频

X-ray Crystallography02:18

X-ray Crystallography

24.0K
The size of the unit cell and the arrangement of atoms in a crystal may be determined from measurements of the diffraction of X-rays by the crystal, termed X-ray crystallography.
Diffraction
Diffraction is the change in the direction of travel experienced by an electromagnetic wave when it encounters a physical barrier whose dimensions are comparable to those of the wavelength of the light. X-rays are electromagnetic radiation with wavelengths about as long as the distance between neighboring...
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X-ray Diffraction of Biological Samples01:10

X-ray Diffraction of Biological Samples

3.8K
X-ray diffraction or XRD is an analytical tool that utilizes X-rays to study ordered structures such as crystalline organic and inorganic samples, polycrystalline materials, proteins, carbohydrates, and drugs.
According to Bragg's law, when X-rays strike the sample positioned on a stage, the rays are  scattered by the electron clouds around the sample atoms. The  X-ray diffraction or scattering is caused by constructive interference of the X-ray waves that reflect off the internal...
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相关实验视频

Updated: Jul 15, 2025

Structural Studies of Macromolecules in Solution using Small Angle X-Ray Scattering
07:19

Structural Studies of Macromolecules in Solution using Small Angle X-Ray Scattering

Published on: November 5, 2018

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通过模拟来解释宏分子衍射.

Iris D Young1, Derek Mendez2, Billy K Poon1

  • 1Molecular Biophysics and Integrated Bioimaging Division, Lawrence Berkeley National Laboratory, Berkeley, CA, United States.

Methods in enzymology
|September 25, 2023
PubMed
概括
此摘要是机器生成的。

分散模拟器通过预测结果和改进数据收集策略来帮助宏分子结晶学实验. 这些工具提高了选择X射线源和探测器技术的信心,以获得更好的实验结果.

关键词:
在X射线晶体学.衍射模式的衍射模式扩散散的散射是一种分散的散射.模拟的衍射模拟.

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An All-in-one Sample Holder for Macromolecular X-ray Crystallography with Minimal Background Scattering
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相关实验视频

Last Updated: Jul 15, 2025

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Structural Studies of Macromolecules in Solution using Small Angle X-Ray Scattering

Published on: November 5, 2018

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Microfluidic Chips for In Situ Crystal X-ray Diffraction and In Situ Dynamic Light Scattering for Serial Crystallography
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Microfluidic Chips for In Situ Crystal X-ray Diffraction and In Situ Dynamic Light Scattering for Serial Crystallography

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An All-in-one Sample Holder for Macromolecular X-ray Crystallography with Minimal Background Scattering
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科学领域:

  • 宏分子晶体学 宏分子晶体学
  • 在X射线衍射物理学中,X射线的衍射物理

背景情况:

  • 宏分子晶体学中的实验设计涉及数据收集的关键选择.
  • 优化实验,特别是扩散散射,需要仔细考虑X射线源和探测器.

研究的目的:

  • 探索衍射模拟器在提高宏分子晶体学实验设计和结果方面的实用性.
  • 为选择最佳的X射线源 (同步子与自由电子激光器) 和探测器技术 (区域与像素阵列) 提供见解.

主要方法:

  • 使用基于物理的模拟软件来计算衍射模式.
  • 基于物理模型和晶体特性预测布拉格点和分散散射特征.
  • 评估模拟对实验规划和数据分析的影响.

主要成果:

  • 模拟器可以预测衍射模式特征 (位置,大小,形状,形状).
  • 基于物理的模拟有助于在规划阶段的早期确定潜在的数据分析问题.
  • 模拟有助于改进衍射测量,特别是对于弱数据和重叠模式.

结论:

  • 分散模拟器是改进宏分子晶体学实验规划和执行的宝贵工具.
  • 这些模拟增加了对有关X射线源,实验几何和探测器选择的决策的信心.
  • 模拟提供了一条完善数据测量的途径,并解决复杂衍射数据集中的挑战.