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Inductively Coupled Plasma-Mass Spectrometry (ICP-MS): Interferences01:20

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Inductively coupled plasma–mass spectrometry (ICP–MS) is a highly selective and sensitive technique for accurate elemental analysis. Though the analysis of ICP–MS mass spectra is comparatively straightforward, it is affected by spectroscopic and non-spectroscopic interferences. Spectroscopic interferences arise when the plasma contains ionic species with an m/z value the same as the analyte ion. Spectroscopic interference can be categorized as isobaric, polyatomic ions, and...
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Software-Assisted Quantitative Measurement of Osteoarthritic Subchondral Bone Thickness
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植物体形状学的观察者间和观察者内部的变化.

Welmoed A Out1, Rand Evett2, Kristýna Hošková3

  • 1Department of Archaeological Science and Conservation, Moesgaard Museum, 8270, Højbjerg, Denmark.

Annals of botany
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PubMed
概括
此摘要是机器生成的。

观察者在植物体形态学上的变化可能导致错误识别. 建议进行标准化培训和指导方针,以提高考古植物石分析的准确性和一致性.

关键词:
几何形态测量几何形态测量图像J 图像J 图像J考古植物学 考古植物学植物微残留物 植物微残留物方法论 方法论 方法论植物石的分析分析.分类学识别的标识.

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科学领域:

  • 考古植物学 考古植物学
  • 古生态学 古生态学
  • 几何形态学 几何形态学 几何形态学

背景情况:

  • 在考古植物学和古生态学中,几何形态测量对于识别植物石植物石至关重要.
  • 在与参考材料相比,考古植物石的形态测量数据有助于分类学归属.
  • 植物石形态测量的观察者变化是错误和潜在的错误识别的研究不足的来源.

研究的目的:

  • 为了研究植物体形态学的观察者间和观察者内部的变化.
  • 识别导致植物石测量变化的因素.
  • 提供建议,以尽量减少植物石分析中的观察者误差.

主要方法:

  • 八名研究人员从50个样本中测量了三种植物体形态型 (比洛巴特,布利形状状,长状树状) 每个样本,三次.
  • 测量包括从照片中数字化植物石轮,并使用开源形态测量软件对其进行分析.
  • 收集的数据包括每个植物体的17个大小和形状变量.

主要成果:

  • 观察者之间的差异从平均值的0%到23%不等.
  • 观察者内部的变化与平均值的差异在0%至9%.
  • 在缺乏经验的研究人员中,变化通常更高,缩放错误是主要原因.

结论:

  • 通过标准化的指令和培训,可以显著减少观察者之间的和观察者内部的变化.
  • 国际植物形态测量委员会 (ICPM) 提供建议,以尽量减少变异.
  • 标准化指导方针对于准确,一致和可比的植物石形态分析至关重要,直到自动数据收集得到广泛使用.