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Testing Water Quality01:14

Testing Water Quality

When the quality of water for concrete preparation is uncertain, its impact on the setting time of cement and compressive strength of mortar is assessed by comparison with de-ionized or distilled water benchmarks. American Society for Testing and Materials (ASTM) C1602 requires the setting times to be within 90 minutes of the control, British Standard (BS) 3146:1980 allows a 30-minute variance in the initial setting, while British Standards European Norm (BS EN) 1008 specifies initial setting...

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相关实验视频

Updated: Jul 7, 2026

Long-term Video Tracking of Cohoused Aquatic Animals: A Case Study of the Daily Locomotor Activity of the Norway Lobster Nephrops norvegicus
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缺陷工程 WO3-架构与随机森林算法相结合,可实现实时海产品质量评估.

Ziqi Zhang1, Junxuan Liang1, Kai Liu1

  • 1State Key Laboratory of Bio-Fibers and Eco-Textiles, College of Materials Science and Engineering, Qingdao University, Qingdao 266071, P. R. China.

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|August 3, 2024
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概括

工程氧化物 (WO2.91) 传感器检测三乙胺 (TEA) 的海鲜质量. 缺陷工程提高了传感器性能,使鱼类腐败的准确预测.

关键词:
缺陷工程 缺陷工程气体传感器 气体传感器海鲜质量 海鲜质量三乙烯胺的使用方法氧化的氧化.

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科学领域:

  • 材料科学 材料科学 材料科学
  • 化学传感器 化学传感器
  • 食品科学 食品科学 食品科学

背景情况:

  • 准确的,实时监测海鲜腐烂对于食品安全至关重要.
  • 在复杂气体混合物中识别像三乙胺 (TEA) 这样的特定破坏标记仍然具有挑战性.

研究的目的:

  • 为海产品质量评估开发先进的三乙胺 (TEA) 传感器.
  • 调查缺陷工程对氧化 (WO3-x) 气体传感性能的影响.

主要方法:

  • 制造缺陷工程 WO3-x 架构,特别是 WO2.91.1.
  • 传感器性能的表征,包括响应,检测极限,选择性和稳定性.
  • 测试传感器在鱼衰变期间检测TEA的能力.
  • 应用随机森林算法来预测储存时间.

主要成果:

  • 与WO2.96.6相比,WO2.91传感器显示了显著增强的TEA传感性能.
  • 主要改进包括1.9倍更高的响应,2.1倍更快的响应时间,3.2倍更低的检测极限和2.8倍更高的TEA/NH3选择性.
  • 传感器显示长期稳定性和抗干扰能力.
  • 使用WO2.91传感器和随机森林算法,以95%的准确度准确预测鱼储存时间 (0-48小时).

结论:

  • 在WO3-x中缺陷工程是一种有效的策略,可以提高气体检测性能.
  • 开发的WO2.91传感器为实时海鲜质量评估提供了可靠的解决方案.
  • 这种方法为设计各种应用的改进气体传感器提供了宝贵的见解.