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相关概念视频

X-ray Diffraction of Biological Samples01:10

X-ray Diffraction of Biological Samples

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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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X-ray Crystallography02:18

X-ray Crystallography

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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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相关实验视频

Updated: Jun 23, 2025

Irradiator Commissioning and Dosimetry for Assessment of LQ &#945; and &#946; Parameters, Radiation Dosing Schema, and in vivo Dose Deposition
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对于X射线和电子衍射的剂量:RADDOSE-3D中的新功能,包括强度衰变模型.

Joshua L Dickerson1,2, Patrick T N McCubbin1,3, Jonathan C Brooks-Bartlett1

  • 1Department of Biochemistry, Dorothy Crowfoot Hodgkin Building, University of Oxford, Oxford, UK.

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概括
此摘要是机器生成的。

现在,RADDOSE-3D程序使用衍射强度衰变模型更准确地估计辐射剂量,并支持电子衍射实验. 一个新的图形用户界面 (GUI) 提高了剂量估计的可用性.

关键词:
这是一个微型ED.拉德索斯-3D是什么意思分散-衰变加权剂量.剂量 剂量 剂量 剂量 剂量图形化用户界面 图形化用户界面强度衰变模型中的强度衰变模型.辐射损伤 辐射损伤

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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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科学领域:

  • 材料科学 材料科学 材料科学
  • 计算物理 计算物理
  • 辐射剂量计 辐射剂量计

背景情况:

  • 精确的辐射剂量估计在电子显微镜和衍射中至关重要.
  • 现有的工具可能无法完全考虑特定的实验条件,例如衍射强度衰减.
  • 标准剂量单位 (例如,灰色) 与电子衍射 (例如,电子/Å2) 中使用的不同.

研究的目的:

  • 在RADDOSE-3D剂量估计软件中引入新功能和改进.
  • 通过结合衍射强度衰变来提高剂量计算的准确性.
  • 将程序的实用性扩展到电子衍射实验,并提高用户的可访问性.

主要方法:

  • 实施衍射强度衰变模型以修改剂量计算.
  • 开发RADDOSE-ED用于电子衍射,调整剂量单位.
  • 为RADDOSE-3D创建一个图形用户界面 (GUI).

主要成果:

  • 该程序现在可以通过结合强度衰变来计算"衍射衰变加权剂量".
  • RADDOSE-ED为电子衍射提供了以电子/Å2的剂量估计.
  • 新的GUI简化了访问RADDOSE-3D的高级功能.

结论:

  • RADDOSE-3D已经得到了显著的更新,以提供更精确和多样化的辐射剂量估计.
  • 包括电子衍射能力和用户友好的GUI扩大了它的适用性.
  • 这些进步提高了在各种电子束实验中剂量测量的可靠性.