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The electromagnetic spectrum consists of all the types of electromagnetic radiation arranged according to their frequency and wavelength. Each of the various colors of visible light has specific frequencies and wavelengths associated with them, and you can see that visible light makes up only a small portion of the electromagnetic spectrum. Because the technologies developed to work in various parts of the electromagnetic spectrum are different, for reasons of convenience and historical...
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James Clerk Maxwell formulated a single theory combining all the electric and magnetic effects scientists knew during that time, calling the phenomena his theory predicted “Electromagnetic waves”. He brought together all the work that had been done by brilliant physicists such as Oersted, Coulomb, Gauss, and Faraday and added his own insights to develop the overarching theory of electromagnetism. Maxwell’s equations, combined with the Lorentz force law, encompass all the laws...
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Dynamic Quantitative Sensory Testing to Characterize Central Pain Processing
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Electromagnetic induction sensor for dynamic testing of coagulation process.

Zhe Wang1,2, Yuanhua Yu3,4, Zhanjiang Yu3,5

  • 1Changchun University of Science and Technology, Changchun, 130022, China. wangzhe19880824@163.com.

Australasian Physical & Engineering Sciences in Medicine
|January 18, 2018
PubMed
Summary
This summary is machine-generated.

A novel electromagnetic induction sensor accurately assesses blood coagulation status by measuring changes in viscosity and density during the clotting process. This cost-effective point-of-care testing (POCT) offers high accuracy and durability for clinical applications.

Keywords:
Dynamic coagulation process testDynamic modelingElastic supportSensor

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Area of Science:

  • Biomedical Engineering
  • Materials Science
  • Medical Diagnostics

Background:

  • Increasing demand for rapid coagulation testing in critical care settings like surgery and ICUs.
  • Existing point-of-care testing (POCT) methods face limitations in dynamic process monitoring.
  • Need for accurate and reliable coagulation status evaluation for patient management.

Purpose of the Study:

  • To develop and validate an electromagnetic induction sensor for dynamic coagulation testing.
  • To evaluate blood viscosity and density changes during coagulation using a damped vibration principle.
  • To provide core technology for a new electromagnetic induction POCT instrument.

Main Methods:

  • Sensor dynamic modeling and differential equation establishment for vibration system.
  • Optimization of elastic support structural parameters and design of a circular sheet spring.
  • Harmonic response and vibration fatigue coupling analysis of the sensor's elastic support.
  • Setup of an electromagnetic induction sensor testing device and plotting of a standard curve for coagulation POCT.
  • Methodological comparison with an imported POCT coagulation analyzer using clinical blood samples.

Main Results:

  • The designed sensor exhibits a first-order natural frequency of 11.368 Hz.
  • The sensor demonstrates high durability, withstanding 5.295 × 10^2 million compressions and rebounds.
  • Excellent correlation (0.996) and reproducibility (0.002) were achieved compared to the SONOCLOT analyzer.
  • The sensor meets clinical detection accuracy requirements with good elasticity and anti-fatigue properties.

Conclusions:

  • The developed electromagnetic induction sensor is a viable technology for accurate, dynamic coagulation testing.
  • The sensor's performance indicates suitability for developing robust and reliable POCT coagulation instruments.
  • This technology offers a promising advancement for point-of-care coagulation monitoring in clinical settings.