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Related Concept Videos

Equipments Used to Measure Body Temperature01:13

Equipments Used to Measure Body Temperature

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Body temperature can be assessed using various devices and measured in Celsius or Fahrenheit.
Glass-bulb Thermometer:
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Rectal temperature measurement is considered the most precise method for assessing core body temperature and typically registers higher than oral temperature. For adults, the rectal thermometer should be inserted 1 to 1.5 inches into the rectum to obtain the most accurate reading.
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Rapid Homogeneous Detection of Biological Assays Using Magnetic Modulation Biosensing System
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A Current Sensing Biosensor for BOD Rapid Measurement.

Yiman Liu1, Jie Li1,2, Nianxin Wan3

  • 1School of Environmental and Municipal Engineering, Qingdao University of Technology, Qingdao, 266033, China.

Archaea (Vancouver, B.C.)
|November 16, 2020
PubMed
Summary
This summary is machine-generated.

A new biosensor method rapidly detects biochemical oxygen demand (BOD) by correlating current and dissolved oxygen (DO). This practical approach uses immobilized Bacillus subtilis for accurate wastewater monitoring with less than 5% error.

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Area of Science:

  • Environmental Science
  • Analytical Chemistry
  • Biotechnology

Background:

  • Traditional biochemical oxygen demand (BOD) methods are time-consuming, limiting their practical application in real-time water quality monitoring.
  • There is a need for rapid, sensitive, and accurate methods to assess water pollution levels, particularly BOD, which is a key indicator of organic contamination.

Purpose of the Study:

  • To develop a highly sensitive and rapid detection method for biochemical oxygen demand (BOD).
  • To establish a correlation between electrical current and dissolved oxygen (DO) for real-time BOD measurement.
  • To enhance the practicality and applicability of BOD testing in wastewater monitoring.

Main Methods:

  • Development of a novel BOD biosensor utilizing immobilized *Bacillus subtilis* for quantitative microbial fixation.
  • Integration of a conductivity (COND) probe for real-time data acquisition (read every second).
  • Application of the moving average method for data processing, enabling minute-by-minute readings.

Main Results:

  • The developed method demonstrated high accuracy and stability, with relative errors and analytical standard deviations below 5% for national standard samples.
  • Testing with various polluted water samples confirmed a relative error of less than 5%, indicating a broad application range.
  • Results obtained using the rapid biosensor method showed strong consistency with the standard BOD5 method for wastewater samples.

Conclusions:

  • The proposed rapid BOD current sensing biosensor offers a practical and efficient alternative to conventional methods.
  • The biosensor exhibits excellent accuracy, stability, and a wide application range for assessing water quality.
  • This technology holds significant promise for real-time wastewater monitoring and environmental management.