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相关概念视频

Instrument Calibration01:12

Instrument Calibration

187
Instrument calibration is essential for ensuring that instruments produce accurate and consistent results. It is vital in manufacturing, healthcare, testing laboratories, and scientific research. Calibration processes are specific to each instrument and help enhance data accuracy. Each instrument has a unique calibration process tailored to its design and function to improve data accuracy.
Analytical Balance Calibration
An analytical balance measures mass and requires regular calibration to...
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Flow Cytometry01:23

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The development of flow cytometry techniques began in 1934 with initial attempts by Andrew Moldavan, a bacteriologist who counted the cells in a flowing capillary system. Moldavan pumped cells through a capillary tube focused under a microscope for visualization. The invention of photometry allowed the measurement of differentially-stained cells, and Louis Kamentsky developed the first multiparameter flow cytometer in 1965 to identify and count the cancer cells in cervical tissue specimens.
In...
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Signal Flow Graphs01:18

Signal Flow Graphs

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Signal-flow graphs offer a streamlined and intuitive approach to representing control systems, providing an alternative to traditional block diagrams. These graphs use branches to symbolize systems and nodes to represent signals, effectively illustrating the relationships and interactions within the system.
In a signal-flow graph, branches denote the system's transfer functions, while nodes represent the signals. The direction of signal flow is indicated by arrows, with the corresponding...
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Pipe Flowrate Measurement01:28

Pipe Flowrate Measurement

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In pipe flow measurement, orifice, nozzle, and Venturi meters are commonly used to determine fluid flowrates by constricting the flow area, which increases fluid velocity and reduces pressure. This pressure difference, governed by Bernoulli's principle and adjusted for real-world conditions, is essential for calculating flowrate. Each meter type is suited to specific applications based on accuracy, efficiency, and compatibility with various flow conditions.
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相关实验视频

Updated: Jul 2, 2025

Design and Use of a Full Flow Sampling System FFS for the Quantification of Methane Emissions
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Design and Use of a Full Flow Sampling System FFS for the Quantification of Methane Emissions

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简单的多信号校准利用流量分析系统.

Vivian Maringolo1, Alexandre Z Carvalho1, Diogo L Rocha1

  • 1Center on Natural and Human Sciences, Federal University of ABC, 09210-580, Santo André, SP, Brazil.

Talanta
|February 24, 2024
PubMed
概括
此摘要是机器生成的。

新的多信号校准方法,在线多能量校准 (OMEC) 和多分散校准 (MDC),在基于流量的系统中提供准确和高效的分子光谱化学分析. 这些技术简化了样品的准备,并将矩阵效应降到最低,以便可靠地量化分析物.

关键词:
流量分析是一种流量分析.多分散校准的校准方法多种能源校准的校准.尿素氨基酸 尿素氨基酸

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相关实验视频

Last Updated: Jul 2, 2025

Design and Use of a Full Flow Sampling System FFS for the Quantification of Methane Emissions
08:18

Design and Use of a Full Flow Sampling System FFS for the Quantification of Methane Emissions

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Determining 3D Flow Fields via Multi-camera Light Field Imaging
14:25

Determining 3D Flow Fields via Multi-camera Light Field Imaging

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Simultaneous Measurement of Turbulence and Particle Kinematics Using Flow Imaging Techniques
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科学领域:

  • 分析化学 分析化学
  • 谱化学分析 谱化学分析
  • 基于流量的系统.

背景情况:

  • 在分子光谱化学分析中,传统的校准方法可能受到矩阵效应和分析频率的限制.
  • 多信号校准策略通过分析样品和标准混合物来提高准确性和效率提供了替代方案.
  • 现有的多信号方法需要仔细考虑样本准备和潜在的矩阵干扰.

研究的目的:

  • 开发和验证基于流量分析系统的两个新型多信号校准方法:在线多能校准 (OMEC) 和多分散校准 (MDC).
  • 评估OMEC和MDC的可行性和适用性,以确定真实世界样本中的分析物.
  • 将OMEC和MDC的性能与传统的外部校准 (EC) 和标准加法方法进行比较.

主要方法:

  • 基于多个波长的光谱反应开发OMEC.
  • 基于对样本分散概况的分析,开发了MDC.
  • 这两种方法在以流量为基础的系统中应用,使用用标准和水稀释的样本溶液,用KMnO4,牛奶中的尿素和物盆喷雾剂进行测试.

主要成果:

  • OMEC和MDC在连续和脉冲流程中证明了可行性,成功量化了KMnO4.
  • 在牛奶和物小便器喷雾中测定尿素的光谱光度显示出很好的准确性,回收率从93%到101%不等.
  • 用MDC (13 mg L-1) 和OMEC (16 mg L-1) 与EC (10 mg L-1) 相比,尿素的检测极限是可比的或改进的.

结论:

  • 拟议的MDC和OMEC方法在以流量为基础的分流器内有效和高效地用于分析目的.
  • 这些多信号校准策略在简单性和矩阵效应最小化方面具有优势.
  • 该研究证实了OMEC和MDC在复杂样品中准确量化分析物的实际应用.