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相关概念视频

Temperature Measurement Sites01:14

Temperature Measurement Sites

3.8K
A thermometer measures body temperature. The common sites for measuring body temperature are the oral cavity, axillary region, temporal artery, and skin surface, such as the forehead, abdomen, and axilla. True core body temperature is assessed in the rectum, tympanic membrane, pulmonary artery, esophagus, and urinary bladder.
Oral: When assessing oral temperature, the thermometer tip should be placed under the tongue in the posterior sublingual pocket. It offers accurate readings and can be...
3.8K
Thermosensation01:43

Thermosensation

34.2K
Peripheral thermosensation is the perception of external temperature. A change in temperature (on the surface of the skin and other tissues) is detected by a family of temperature-sensitive ion channels called Transient Receptor Potential, or TRP, receptors. These receptors are located on free nerve endings. Those detecting cold temperatures are closer to the surface of the skin than the nerve endings detecting warmth. These thermoTRP channels, while temperature selective, have relatively...
34.2K
Gas Chromatography: Types of Detectors-II01:19

Gas Chromatography: Types of Detectors-II

1.3K
In gas chromatography, different detectors are employed to meet specific analytical needs. These detectors are often categorized based on their detection mechanisms and the types of compounds they are best suited to analyze. Thermal Conductivity Detectors (TCD), Flame Ionization Detectors (FID), and Electron Capture Detectors (ECD) represent common categories, each with unique operating principles and applications. However, beyond these, several other detectors are designed for more specialized...
1.3K
Equipments Used to Measure Body Temperature01:13

Equipments Used to Measure Body Temperature

2.0K
Body temperature can be assessed using various devices and measured in Celsius or Fahrenheit.
Glass-bulb Thermometer:
Glass-bulb thermometers are hollow glass tubes with a bulb tip containing liquid such as ethanol or mercury. Historically, glass bulb mercury thermometers were the standard device to measure body temperature. Today, mercury thermometers are prohibited in many countries due to the hazardous effects of mercury and the risk of exposure if the glass bulb breaks. In general,...
2.0K
Thermometers and Temperature Scales01:22

Thermometers and Temperature Scales

8.1K
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.
As many physical properties depend on temperature, the variety of thermometers is...
8.1K
Gas Chromatography: Overview of Detectors01:13

Gas Chromatography: Overview of Detectors

2.2K
Detectors in gas chromatography (GC) help identify and quantify the components of a mixture by translating chemical properties into measurable signals, which are displayed on a chromatogram. Detectors can be categorized into two main types: destructive and non-destructive.
A non-destructive detector allows a sample to be analyzed without altering or consuming it, meaning the sample can be collected after detection for further analysis. Examples include thermal conductivity detectors and...
2.2K

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相关实验视频

Updated: Mar 7, 2026

Infrared Degenerate Four-wave Mixing with Upconversion Detection for Quantitative Gas Sensing
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Infrared Degenerate Four-wave Mixing with Upconversion Detection for Quantitative Gas Sensing

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室温跟踪 NO2 基于二维异构的监控系统,并与深度学习集成.

Ziyang Yin1, Xingyu Huang1, Huaozhe Zhuang1

  • 1School of Health Science and Engineering, University of Shanghai for Science and Technology, 516 Jungong Road, Shanghai 200093, China.

ACS sensors
|March 5, 2026
PubMed
概括
此摘要是机器生成的。

使用Bi2S3/WO3异构和深度学习的新系统在室温下准确检测低度的二氧化 (NO2). 这一进步通过精确的实时气体传感提高了空气质量监测和疾病诊断.

关键词:
深度学习算法深度学习算法气体传感器 气体传感器不同结构的异构结构.室温传感器可以传感室温.追踪NO2检测的方法

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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
  • 环境监测 环境监测

背景情况:

  • 精确检测微量二氧化 (NO2) 对于空气质量管理和早期诊断呼吸道疾病至关重要.
  • 在低度的高精度气体检测仍然是一个重要的研究挑战.
  • 材料优化和深度学习是提高传感器精度的关键策略.

研究的目的:

  • 开发一个远程NO2监测系统,用于低度检测.
  • 为了利用Bi2S3/WO3异构结构和深度学习来提高气体传感性能.
  • 为了实现实时,高精度的室温NO2检测.

主要方法:

  • 用于气体传感的Bi2S3/WO3异构结构的制造.
  • 无线通信模块的集成用于远程监控.
  • 使用1D-CNN/LSTM深度学习模型与数据增强进行准确的回归.

主要成果:

  • Bi2S3/WO3传感器表现出高响应率 (17.9到5ppm NO2),灵敏度 (3.84/ppm) 和快速响应/恢复时间 (27/110秒).
  • 在数据增强后,1D-CNN/LSTM模型实现了高精度 (R2 = 0.9826) 的ppb级NO2检测.
  • 该系统促进了实时监控,多通道操作和智能报警.

结论:

  • Bi2S3/WO3异构结构通过改进的电荷转移和活性氧物种生成,显著提高了NO2传感性能.
  • 1D-CNN/LSTM深度学习模型有效地克服了数据稀缺问题,提高了低度检测的准确性.
  • 综合系统为高精度,实时远程NO2监测提供了一个有希望的策略.