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相关概念视频

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Polarimetry finds application in chemical kinetics to measure the concentration and reaction kinetics of optically active substances during a chemical reaction. Optically active substances have the capability of rotating the plane of polarization of linearly polarized light passing through them—a feature called optical rotation. Optical activity is attributed to the molecular structure of substances. Normal monochromatic light is unpolarized and possesses oscillations of the electrical...
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基于粒子运动的连续生物传感器:度测量精度如何取决于时间尺度?

Rafiq M Lubken1, Yu-Ting Lin1, Stijn R R Haenen1

  • 1Helia Biomonitoring, Eindhoven 5612 AR, The Netherlands.

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概括

了解测量不精确度是连续生物传感器的关键. 这项研究量化了微粒运动生物感知 (BPM) 传感器的不精确性来源,揭示了传感器噪声作为主要变化因素.

关键词:
基于亲和关系的传感传感.分析性表现 分析性表现连续的生物感知.持续的监控,持续的监控.测量精度的测量精度.

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科学领域:

  • 生物感知技术的技术
  • 分析化学是一种分析化学.
  • 对测量数据的统计分析.

背景情况:

  • 连续生物传感器可以长期监测生物分子物质.
  • 准确解释度-时间概况需要了解各种时间尺度上的测量不精确性.
  • 量化不准确来源对于推进连续传感技术至关重要.

研究的目的:

  • 定义和分析持续生物传感测量不精度,考虑不同的变化源和时间尺度.
  • 以示例,使用微粒运动 (BPM) 技术进行生物感知来量化不精确度的方法.
  • 在现实应用中识别导致测量不精确性的关键因素.

主要方法:

  • 统计分析了几个月来近50个BPM传感器弹的广泛测量数据.
  • 开发一种方法来提取和比较与不同变化源和时间尺度 (分钟到周) 相关的不精确度参数.
  • 该方法应用于BPM传感器,用于测量土豆果汁中的糖类化合物.

主要成果:

  • 发现BPM传感器测量的相对余量分布正常.
  • 传感器噪声被确定为最重要的变化来源,其次是样品预处理.
  • 发现来自流体,传感器漂移和弹差异的变化很小.

结论:

  • 开发的方法有效地阐明了测量不准确性的时间依赖和时间独立因素.
  • 由随机波动和非特异性相互作用产生的传感器噪声是短时间尺度上占主导地位的不精确因素.
  • 这些发现为解释连续生物传感器数据和未来传感器开发提供了必要的知识.