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This paper describes heating properties of the developed coaxial needle applicator made of a shape memory alloy (SMA) for brain tumor hyperthermia treatments to avoid undesirable hotspots. We estimated the temperature distribution inside an agar phantom by the finite element method (FEM) and heated the agar phantom with the developed needle applicator. Here, first, the structure of the developed coaxial...
The prebreakdown phonomena in liquefied nitrogen have been studied by using the modified optical Schlieren technique with an image-converter camera to examine optically the drift velocities of the disturbance due to the movement of the charged carriers. Consequently, the drift velocity of the charged carrier in liquefied nitrogen was observed as the Schlieren image. At the same time, the prebreakdown...
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