Electromagnetic waves' effect on airflow during air sparging

Farid, Arvin; Najafi, Atena; Browning, Jim; Smith, Elisa H. Barney

doi:10.1016/j.jconhyd.2018.11.004

Cited by 6 publications

(2 citation statements)

References 8 publications

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“…Based on the shortcomings in the current methods of stroke detection and identification, the use of a scenario in a non-intrusive manner was addressed by designing our simulation model, then, applying electromagnetic waves [18,19], and measuring the change in results according to the three scenarios. The model was designed-figure 1, using laminar flow [20][21][22][23] to represent the blood flow in venous, in normal Scenario, blood clotting in ischemic Scenario 2 through 3 positions, and vessel cut in hemorrhagic Scenario 3 through 9 positions.…”

Section: Model Constructionmentioning

confidence: 99%

Simulation: Early Detection of Brain Vessels Stroke by Applying Electromagnetic Waves Non-Invasively

Elshahat¹,

Ashraf²,

Waleed³

et al. 2021

IJRITCC

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Introduction: Early recognition of stroke with its two types Ischemic and Hemorrhagic, is one of the most crucial research points, commonly used methods are CT- (computerized tomography), and MRI- (Magnetic resonance imaging). These techniques cause a delay in the detection of the condition, which causes permanent disability. The main reason behind the fatal consequences of stroke is the delay of detection. Therefore, this research paper aims to early detection of the type of stroke without delay until the appropriate diagnosis of each type is made, and then the appropriate treatment without delay. Method: Using a non-invasive and fast technique to determine the stroke type by wave, we simulate and design a vessel containing a liquid as a laminar flow with the same density and velocity of blood, and it was surrounded by a Homogenized multi-turn coil consisting of (n) turns to represent the magnetic field, using specific frequency (HZ) with Electrical field in coil current (A) to see the changing in magnetic flux density (MFD), Depending on the changes in MFD, the flow of blood in laminar flow can be affected by clotting (Ischemic) or Hemorrhagic (cutting) in our vessel designed. We have built three different scenarios to apply the technique which are: First: Normal Scenario (where the blood in vessel has no problem), second: clotting (ischemic, where the vessel blocked in specific three position) and Third: Cutting (Hemorrhagic, where the vessel cut in certain nine positions). Results: This paper presents-through our own design-the studying of applying the electromagnetic waves on blood inside the vessel to detect the stroke type in our three scenarios (normal, ischemic three positions or hemorrhagic nine positions), Studying the magnetic field and laminar flow. This study covered in three areas. First: coil geometry analysis, Second: stationary, and Third: frequency domain. through the changes in Magnetic Flux Density -MFD- waves. The results were promising and distinct for distinguishing between the three scenarios which are normal, ischemic (3 positions) and hemorrhagic (9 positions) the results of MFD are: 0.09 to 3.3*10^-3, 0.08 to 3.15*10^-4, 0.15 to 6.2*10^-3 respectively.

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Section: Model Constructionmentioning

confidence: 99%

Simulation: Early Detection of Brain Vessels Stroke by Applying Electromagnetic Waves Non-Invasively

Elshahat¹,

Ashraf²,

Waleed³

et al. 2021

IJRITCC

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“…In addition to the above mechanisms, when an electromagnetic field is applied to a conductive MXene, local eddy currents may form and create a local nonuniform induced electric field. The additional electric field may alter the motion of aerosol MS2 when it passes through the MXene-coated air filter via the phenomenon of dielectrophoresis (DEP), 55 where the dielectric neutral particles such as MS2 experience charge polarization when it is immersed in the nonuniform electric field. The induced charges interact with the field to create a net force, resulting in dielectrophoretic motion.…”

Section: ■ Introductionmentioning

confidence: 99%

Revolutionizing Airborne Virus Defense: Electromagnetic MXene-Coated Air Filtration for Superior Aerosol Viral Removal

Liu,

Ma,

Sabuj

et al. 2024

ACS Appl. Mater. Interfaces

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The COVID-19 pandemic sparked public health concerns about the transmission of airborne viruses. Current methods mainly capture pathogens without inactivation, leading to potential secondary pollution. Herein, we evaluated the inactivation performance of a model viral species (MS2) in simulated bioaerosol by an electromagnetically enhanced air filtration system under a 300 kHz electromagnetic induction field. A nonwoven fabric filter was coated with a 2D catalyst, MXene (Ti 3 C 2 T x ), at a coating density of 4.56 mg•cm −2 to absorb electromagnetic irradiation and produce local heating and electromagnetic field for microbial inactivation. The results showed that the MXene-coated air filter significantly enhanced the viral removal efficiency by achieving a log removal of 3.4 ± 0.15 under an electromagnetic power density of 369 W•cm −2 . By contrast, the pristine filter without catalyst coating only garnered a log removal of 0.3 ± 0.04. Though the primary antimicrobial mechanism is the local heating as indicated by the elevated surface temperature of 72.2 ± 4 °C under the electromagnetic field, additional nonthermal effects (e.g., dielectrophoresis) on enhanced viral capture during electromagnetically enhanced filtration were investigated by COMSOL simulation to delineate the potential transmission trajectories of bioaerosol. The results provide unique insights into the mechanisms of pathogen control and thus promote alternative solutions for preventing the transmission of airborne pathogens.

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Electrokinetic Remediation

Farid

2024

Geoenvironmental Engineering

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Electromagnetic waves' effect on airflow during air sparging

Cited by 6 publications

References 8 publications

Simulation: Early Detection of Brain Vessels Stroke by Applying Electromagnetic Waves Non-Invasively

Simulation: Early Detection of Brain Vessels Stroke by Applying Electromagnetic Waves Non-Invasively

Revolutionizing Airborne Virus Defense: Electromagnetic MXene-Coated Air Filtration for Superior Aerosol Viral Removal

Electrokinetic Remediation

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