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Ocular temperatures during infrared or millimeter wave exposure were measured with thermography, fluoroptic thermometer, and microencapsulated thermochromic liquid crystals (MTLC) method. MTLC showed good correlation with ocular damage.
In vivo ocular temperatures in rabbits were measured during 40 GHz millimeter-wave exposure (400–100 mW/cm2). To visualize aqueous humor convection, 0.2% microencapsulated thermochromic liquid crystals (MTLCs) were injected into the anterior chambers of rabbit eyes. Exposure to 40 GHz increased corneal, lens and retrobulbar temperature, with aqueous humor convection having an important role in heat...
Acute ocular damage threshold of 40 GHz millimeter wave (MMW) exposure was investigated. Pigmented rabbits were exposed unilaterally to 400, 300, 200 or 100 mW/cm2 40 GHz MMW for 6 minutes by a lens antenna under systemic anesthesia. Ocular changes were evaluated by slit-lamp biomicroscopy. Miosis and corneal epithelial damage except corneal stromal opacification were observed immediately after 6...
We commercialized a large-size optical current transformer (OCT) using the Faraday effect for the Cable Head Station of Hokkaido-Honshu HVDC Link for cable protection. The rated current and voltage of the HVDC are ±1200 A and ±250 kV, respectively. The diameter of the sensing head of the OCT is about 2 m and it is applicable not only to newly constructed cable heads but also to existing cable heads...
For DC current measurement, we have developed optical current transformer (OCT) based on Faraday effect using reflection Sagnac interferometer and performed the field test in Hokkaido-Honshu HVDC Link in Japan from Feb. 2008 in order to confirm its stability over time, and through environment condition. The developed OCT was designed to be installed at the bottom of the cable head bushing without...
The ultrasonic power absorbed by a microbubble in its continuous wave response is estimated through numerically solving a version of the Rayleigh-Plesset equation. At an ultrasonic frequency of 3 MHz, a resonant microbubble, approximately 1.1 /spl mu/m in radius, showed an absorption cross section of about 0.005 mm/sup 2/ in its low power response. This estimation predicts that the tissue ultrasonic...
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