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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...
24.0K
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
Analyte Adsorption and Distribution01:09

Analyte Adsorption and Distribution

692
In certain chromatographic separations, solutes transfer between the mobile phase and the stationary phase via sorption, which typically refers to the process of adsorption. For many chromatographic systems, the sorption process often depends on the polarity of the compounds—an expression of the overall dipole moment within the molecule. During the separation process, there is competition between the solute and solvent for adsorption to the stationary phase. Highly polar compounds and...
692

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相关实验视频

Updated: Jul 16, 2025

Study of Short Peptide Adsorption on Solution Dispersed Inorganic Nanoparticles Using Depletion Method
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贝叶斯框架用于分析通过时间解析的X射线衍射观察到的吸附过程.

Yuichi Yokoyama1, Shogo Kawaguchi1, Masaichiro Mizumaki2,3

  • 1Japan Synchrotron Radiation Research Institute (JASRI), Sayo, Hyogo, 679-5198, Japan.

Scientific reports
|September 12, 2023
PubMed
概括
此摘要是机器生成的。

本研究引入了贝叶斯框架,使用时间解析的X射线衍射精确分析动态材料过程. 新方法准确地建模了时间演变,并确定了过程开始时间,提高了对吸附和其他反应的理解.

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Structural Studies of Macromolecules in Solution using Small Angle X-Ray Scattering
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In situ Grazing Incidence Small Angle X-ray Scattering on Roll-To-Roll Coating of Organic Solar Cells with Laboratory X-ray Instrumentation
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In situ Grazing Incidence Small Angle X-ray Scattering on Roll-To-Roll Coating of Organic Solar Cells with Laboratory X-ray Instrumentation

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科学领域:

  • 材料科学 材料科学 材料科学
  • 化学动力学 化学动力学
  • 分析化学 分析化学

背景情况:

  • 了解动态材料过程至关重要.
  • 时间解析的X射线衍射 (TRXRD) 是研究这些动态的一个关键技术.
  • 传统的分析方法在准确的时间演变建模和开始时间估计方面扎.

研究的目的:

  • 开发一个强大的框架来分析来自动态过程的时间序列数据.
  • 准确地建模时间演变并确定动态事件的开始时间.
  • 提高对吸附过程和其他动态材料行为的理解.

主要方法:

  • 建立一个包含时间演变模型的贝叶斯框架.
  • 应用框架来分析吸附过程,使用时间解析的X射线衍射数据.
  • 提取关于时间演变模型和吸附开始时间的信息.

主要成果:

  • 准确估计吸附过程的时间演变模型和开始时间.
  • 在估计吸附性质方面提高了准确性,例如速率常量.
  • 展示框架能够提供更精确的动态吸附理解的能力.

结论:

  • 开发的贝叶斯框架为分析动态材料过程提供了一种通用而强大的方法.
  • 该框架提高了时间演变建模和启动时间估计的精度.
  • 该方法适用于各种动态过程,包括化学反应,在材料科学中具有广泛的潜力.