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相关概念视频

pH Scale02:41

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Hydronium and hydroxide ions are present both in pure water and in all aqueous solutions, and their concentrations are inversely proportional as determined by the ion product of water (Kw). The concentrations of these ions in a solution are often critical determinants of the solution’s properties and the chemical behaviors of its other solutes. Two different solutions can differ in their hydronium or hydroxide ion concentrations by a million, billion, or even trillion times. A common means of...
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In designing and analyzing filters, resonant circuits, or circuit analysis at large, working with standard element values like 1 ohm, 1 henry, or 1 farad can be convenient before scaling these values to more realistic figures. This approach is widely utilized by not employing realistic element values in numerous examples and problems; it simplifies mastering circuit analysis through convenient component values. The complexity of calculations is thereby reduced, with the understanding that...
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The human body utilizes protein buffer systems to maintain a stable pH. These systems capitalize on the dual role of amino acids, which can act as acids or bases by accepting or releasing hydrogen ions in response to pH changes. Protein buffer systems are particularly significant in the extracellular fluid (ECF) and intracellular fluid (ICF) of active cells, where structural and functional proteins provide substantial buffering capacity.
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Any physical property that depends consistently and reproducibly on temperature can be used as the basis of a thermometer. For example, volume increases with temperature for most substances. This property is the basis for the common alcohol thermometer and the original mercury thermometers. Other properties used to measure temperature include electrical resistance, color, and the emission of infrared radiation.
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Distribution reliability in electrical power systems is critical for ensuring an uninterrupted power supply to consumers at minimal cost. According to IEEE Standard Terms, reliability is the probability that a device will function without failure over a specified time period or amount of usage. For electric power distribution, this translates to maintaining continuous power supply and addressing customer concerns over power outages. Several indices, as defined by IEEE Standard 1366-2012, are...
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The definition of temperature in terms of molecular motion suggests that there should be a lowest possible temperature, where the average kinetic energy of molecules is zero (or the minimum allowed by quantum mechanics). Experiments confirm the existence of such a temperature, called absolute zero. An absolute temperature scale is one whose zero point is absolute zero. Such scales are convenient in science because several physical quantities, such as the volume of an ideal gas, are directly...
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一个大规模的外周血细胞数据集用于自动化血液学分析.

Atıf Eren Yarıkan1,2, Can Örer3, Volkan Akyıldız3

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此摘要是机器生成的。

这项研究介绍了KU-Optofil PBC数据集,这是最大的外围血液细胞图像公开集合,用于自动分析. 它有助于开发先进的血液学系统,以准确分类白细胞.

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科学领域:

  • 血液学 血液学 血液学
  • 医学图像分析 医学图像分析
  • 计算生物学 计算生物学

背景情况:

  • 准确的白细胞分类对于诊断血液学疾病至关重要.
  • 现有的自动化血细胞分析数据集缺乏规模和多样性.
  • 需要全面,高质量的数据集来推进血液学中的AI.

研究的目的:

  • 介绍KU-Optofil PBC数据集,这是最大的外围血液细胞图像公开收集.
  • 为13个不同的细胞类提供多样化的数据集,包括罕见的亚型.
  • 促进开发强大的自动化血液学系统.

主要方法:

  • 采集了31,489张高分辨率显微镜图像,这些图像是5月-格伦瓦尔德-吉姆萨染色的血液涂抹.
  • 标准化成像条件使用Sysmex DI-60系统在100×放大.
  • 专家血液学家的手册注释,具有较高的评价者间一致性 (科恩卡帕>0.85).

主要成果:

  • KU-Optofil PBC 数据集包含13个细胞类的31,489张图像,包括常见和罕见的类型.
  • 图像被组织成培训,验证和测试集 (70:10:20) 在368×368分辨率.
  • 基线深度学习实验显示,DenseNet-121实现了95.23%的准确性,证明了数据集的实用性.

结论:

  • KU-Optofil PBC 数据集解决了医疗图像分析资源中的关键缺口.
  • 这一数据集支持对外围血液细胞分析的先进自动化系统的开发.
  • 该资源预计将大大推进自动化血液学诊断和临床应用.