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相关概念视频

Effects of EDTA on End-Point Detection Methods01:18

Effects of EDTA on End-Point Detection Methods

348
Different methods, such as visual observance of metal-ion indicators, spectroscopic techniques, and potentiometric methods, can determine the endpoint of an EDTA titration.
In the visual method, metal-ion indicators (metallochromic dyes), which have distinct colors in their free and complex forms, are added to the mixture to signal the titration's end point. They form stable complexes with metal ions, but these complexes are weaker than the corresponding metal–EDTA complexes. As a...
348
Gas Chromatography: Types of Detectors-I01:21

Gas Chromatography: Types of Detectors-I

608
There are different types of detectors used in gas chromatography, each with its own specific properties that make it suitable for detecting certain types of analytes. The most commonly used detectors in GC are thermal conductivity detector (TCD), flame ionization detector (FID), and electron capture detector (ECD).
TCD is the earliest and most widely used detector that operates by measuring the changes in the thermal conductivity of the carrier gas. When a sample compound enters the detector,...
608
High-Performance Liquid Chromatography: Types of Detectors01:15

High-Performance Liquid Chromatography: Types of Detectors

796
The role of the detectors in High-Performance Liquid Chromatography (HPLC) is to analyze the solutes as they exit from the chromatographic column. The detector recognizes the solute's property and generates corresponding electrical signals, which are converted into a readable graph of the detector's response versus elution time called a chromatogram at the computer. There are several types of HPLC detectors, each with its own advantages and limitations, depending on the analyte...
796
Capillary Electrophoresis: Applications01:30

Capillary Electrophoresis: Applications

530
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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相关实验视频

Updated: Sep 11, 2025

Electrochemical Preparation of Poly3,4-Ethylenedioxythiophene Layers on Gold Microelectrodes for Uric Acid-Sensing Applications
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基于介电光谱技术的驼牛奶质量的高效检测方法.

Qing Liang1, Jingchi Guo1, Yang Liu1

  • 1College of Mechanical and Electronic Engineering, Tarim University, Alaer 843300, China; Modern Agricultural Engineering Key Laboratory at Universities of Education Department of Xinjiang Uygur Autonomous Region, Alaer 843300, China; Xinjiang Production and Construction Corps Key Laboratory of Utilization and Equipment of Special Agricultural and Forestry Products in Southern Xinjiang, Alaer 843300, China.

Journal of dairy science
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概括

这项研究引入了用于驼牛奶质量的先进介电光谱模型. 优化的CNN-LSTM模型准确地检测伪造物并量化脂肪,蛋白质和乳糖等营养成分.

关键词:
伪造 伪造 伪造驼的牛奶是驼的牛奶.深度学习是一种深度学习.介电光谱的介电光谱.模型融合模型融合模型融合模型不具有破坏性的检测检测.

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科学领域:

  • 食品科学与技术 食品科学与技术
  • 分析化学 分析化学
  • 机器学习应用 机器学习应用

背景情况:

  • 驼牛奶质量评估在检测改和营养含量方面面临着挑战.
  • 介电性质为牛奶分析提供了一种潜在的非破坏性方法.

研究的目的:

  • 分析驼牛奶成分 (脂肪,蛋白质,乳糖) 的介电变化 (介电常数 ε'和介电损失因子 ε").
  • 开发和比较机器学习模型,用于检测驼牛奶造和量化营养成分.

主要方法:

  • 用介电光谱分析了0.1至26.5GHz频率范围内的驼牛奶样本.
  • 包括部分最小平方 (PLS),卷积神经网络 (CNN),长期短期记忆 (LSTM),CNN-LSTM和优化的CPO-CNN-LSTM-SEN在内的检测模型被构建.
  • 模型的性能被评估为伪造歧视和脂肪,蛋白质和乳糖的同时定量确定.

主要成果:

  • 介电性质 (ε'和 ε") 与脂肪,蛋白质和乳糖含量有很强的负相关性.
  • 在区分伪造的驼牛奶方面,CNN-LSTM实现了100%的准确性.
  • 优化的CPO-CNN-LSTM-SEN模型表现出高精度 (RP2高达0.9703) 对营养成分的同时定量确定.

结论:

  • 介电光谱学与先进的机器学习模型相结合,为驼牛奶质量控制提供了强大的解决方案.
  • 开发的模型可以有效地检测伪造,并准确量化驼牛奶中的关键营养成分.