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相关概念视频

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...
3.8K
X-ray Crystallography02:18

X-ray Crystallography

23.9K
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...
23.9K

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Erratum: "First experiments with ultrashort, circularly polarized soft x-ray pulses at FLASH2" [Struct. Dyn. <b>12</b>, 034301 (2025)].

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相关实验视频

Updated: Jul 3, 2025

Biochemical and Structural Characterization of the Carbohydrate Transport Substrate-binding-protein SP0092
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Biochemical and Structural Characterization of the Carbohydrate Transport Substrate-binding-protein SP0092

Published on: October 2, 2017

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原始衍射数据和可重现性数据.

Loes M J Kroon-Batenburg1, Matthew P Lightfoot2, Natalie T Johnson2

  • 1Crystal and Structural Chemistry, Bijvoet Center for Biomolecular Research, Utrecht University, Universiteitsweg 99, 3584 CG Utrecht, The Netherlands.

Structural dynamics (Melville, N.Y.)
|February 16, 2024
PubMed
概括
此摘要是机器生成的。

保存原始衍射数据为理解结构化学中的可重复性提供了好处. 虽然宏分子结晶学现在需要原始数据的可用性,但化学结晶学尚未采用这一政策.

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High Pressure Single Crystal Diffraction at PX^2
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High Pressure Single Crystal Diffraction at PX^2

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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

Published on: April 24, 2018

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相关实验视频

Last Updated: Jul 3, 2025

Biochemical and Structural Characterization of the Carbohydrate Transport Substrate-binding-protein SP0092
08:53

Biochemical and Structural Characterization of the Carbohydrate Transport Substrate-binding-protein SP0092

Published on: October 2, 2017

30.0K
High Pressure Single Crystal Diffraction at PX^2
11:32

High Pressure Single Crystal Diffraction at PX^2

Published on: January 16, 2017

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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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科学领域:

  • 晶体学 晶体学是指结晶学.
  • 数据科学数据科学数据科学
  • 结构化学 结构化学

背景情况:

  • 数字存储扩展使得原始衍射数据集的托管成为可能.
  • 结构化学界正在考虑保存实验衍射数据的好处和成本.

研究的目的:

  • 咨询全球结构化学界关于原始衍射数据的保存.
  • 根据探头和设施类型分析原始衍射数据集沉积的统计数据.

主要方法:

  • 与国际结晶学联盟 (IUCr) 数据委员会和IUCrData原始数据信件倡议进行商.
  • 监测剑桥晶体数据中心 (CCDC) 沉积物,引用原始衍射数据集DOI.
  • 审查更新的IUCr期刊出版政策.

主要成果:

  • 现在,IUCr期刊要求对宏分子结晶学出版物提供原始数据.
  • 化学晶体学尚未被IUCr结构化学委员会推作为强制性原始数据存档.
  • CCDC数据揭示了X射线,中子和电子探针的原始数据沉积统计数据,以及家庭实验室与中央设施的数据.

结论:

  • 可以更好地理解当前分析程序的可重复性.
  • 对于大分子与化学晶体学中的原始数据存档存在不同的政策.