• Rodríguez, Sebastián
• Ferrada, Pablo
• Maureira, Alejandro
• Zapata, Manuel
• Serrano, Génesis
• Miranda-Ostojic, Carol

Abstract

<jats:p>This work aimed to study the effects of static magnetic fields (SMFs) on cell cultures. A glass flask was filled with a liquid medium, which was surrounded by permanent magnets. Air was introduced through a tube to inject bubbles. Two magnet configurations, north and south, were used as perturbation. Scenedesmus obliquus and Nannochloropsis gaditana, growing in Medium 1 and 2, were subjected to the bubbly flow and SMFs. Differences between media were mainly due to conductivity (0.09 S/m for Medium 1 and 4.3 S/m for Medium 2). Joule dissipation (P) increased with the magnetic flux density (B 0), being 4 orders of magnitude higher in Medium 2 than in 1. Conversely, the time constant (τ P) depended onB 0, being nearly constant for Medium 1 and decreasing at 449 s/T for Medium 2. Dissipation occurred with the sameτ P(235 s) in Medium 1 and 2 atB 0= 0.5T. In Species 1, the SMF effect was inhibitory. For Species 2, a higher enzymatic activity was observed. For superoxide dismutase, the relative difference was 78% with the north and 115% with the south configuration compared to the control values. For the catalase, differences of 29% with the north and 23% with the south configuration compared to control condition were obtained.</jats:p>

Topics

• density
• glass
• glass