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相关概念视频

Optimizing Chromatographic Separations01:15

Optimizing Chromatographic Separations

393
Optimizing chromatographic separations is crucial for obtaining clean separations in a minimum amount of time. Optimization is required for several factors, including kinetic effects related to band broadening, plate height, capacity factor, and separation factor.
Band broadening refers to spreading solute bands as they travel through the column. This broadening can impact resolution. Plate height (H) represents the length required for one theoretical plate. A lower plate height corresponds to...
393
Mass Spectrometry: Complex Analysis01:21

Mass Spectrometry: Complex Analysis

760
Mass spectrometry is an important technique for the identification of pure compounds. However, it has some limitations for the analysis of complex mixtures, often due to excessive fragmentation making the spectrum too complicated to decipher. Mass spectrometry can be combined with suitable separation methods in sequence, forming hyphenated methods, which are useful in the analysis of complex mixtures.
GC–MS is a powerful hyphenated method commonly used in forensics and environmental...
760
High-Performance Liquid Chromatography: Introduction01:11

High-Performance Liquid Chromatography: Introduction

2.0K
High-performance liquid chromatography(HPLC), formerly referred to as High-pressure liquid chromatography, is a powerful technique used to separate, identify, and quantify components in complex mixtures. The term "high pressure" refers to using high pressure to push the liquid mobile phase through the tightly packed columns.
In HPLC, two phases play a critical role in the separation process:
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High-Performance Liquid Chromatography: Elution Process01:05

High-Performance Liquid Chromatography: Elution Process

465
In High-Performance Liquid Chromatography (HPLC), the elution process is critical to the separation of analytes and the quality of chromatographic results. Elution describes how compounds move through the column and separate based on their interactions with the mobile and stationary phases. This process determines the resolution, peak shape, and retention times in the chromatogram, which are essential for identifying and quantifying components in complex mixtures. Understanding the elution...
465
Capillary Electrophoresis: Applications01:30

Capillary Electrophoresis: Applications

393
Capillary electrophoretic separations offer various modes, each with unique applications. These modes include capillary zone electrophoresis, capillary gel electrophoresis, capillary array electrophoresis, capillary isoelectric focusing, capillary isotachophoresis, micellar electrokinetic chromatography, and capillary electrochromatography.
Capillary zone electrophoresis (CZE) separates ionic components based on their electrophoretic mobility. It has been used to separate proteins, amino acids,...
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通过多任务贝叶斯式优化增强LC×LC分离.

Jim Boelrijk1, Stef R A Molenaar2, Tijmen S Bos2

  • 1AI4Science Lab, Informatics Institute, University of Amsterdam, Amsterdam, Science Park 904, 1098 XH, The Netherlands; AMLab, Informatics Institute, University of Amsterdam, Amsterdam, Science Park 904, 1098 XH, The Netherlands.

Journal of chromatography. A
|May 15, 2024
PubMed
概括
此摘要是机器生成的。

多任务贝叶斯优化 (MTBO) 简化了全面的二维液态色谱 (LC×LC) 方法开发. 这种方法结合了保留建模和实验数据,与复杂分析的传统方法相比,大大减少了代.

关键词:
这就是2D-LC.贝叶斯优化的贝叶斯优化封闭循环方法的开发方法机器学习 机器学习移动梯度的变化 梯度的变化

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科学领域:

  • 分析化学 分析化学
  • 染色体学 染色体学 是一种染色学.

背景情况:

  • 在全面的二维液态色谱 (LC×LC) 中的方法开发是复杂的,因为相互依赖和梯度形状.
  • 传统的试错方法耗时且依赖于经验.
  • 保留建模和贝叶斯优化 (BO) 提供解决方案,但也有局限性.

研究的目的:

  • 调查多任务贝叶斯优化 (MTBO) 对LC×LC方法开发的有效性.
  • 将保留模型和实验测量的优势结合在一个优化框架中.
  • 为了应对复杂样品和LC×LC中的众多可调节参数的挑战.

主要方法:

  • 开发并测试了一种多任务贝叶斯优化 (MTBO) 算法.
  • 使用合成保留模型测试案例,将MTBO与传统贝叶斯优化 (BO) 进行比较.
  • 应用MTBO以优化农药分析的LC×LC方法.

主要成果:

  • 在合成测试案例中,MTBO在较少的代过程中发现了比传统的BO更好的最佳.
  • MTBO成功地改善了用于农药分析的初始扫描实验.
  • 该算法在优化复杂的LC×LC方法方面表现出有效性.

结论:

  • MTBO是优化LC×LC方法的一个有希望的技术,特别是当保留模型很难时.
  • 在有限的实验预算下,MTBO为高参数LC×LC优化提供了实用的解决方案.
  • 这种方法提高了染色学方法开发的效率和有效性.