- 著者
- Koji Nagao Kazusa Nakamitsu Hiroki Ishida Kazuaki Yoshinaga Toshiharu Nagai Hoyo Mizobe Koichi Kojima Teruyoshi Yanagita Fumiaki Beppu Naohiro Gotoh
- 出版者
- Japan Oil Chemists' Society
- 雑誌
- Journal of Oleo Science (ISSN:13458957)
- 巻号頁・発行日
- vol.63, no.10, pp.979-985, 2014 (Released:2014-10-01)
- 参考文献数
- 29
- 被引用文献数
- 22 23
The effects on lipid metabolism of four different n-3 highly unsaturated fatty acids (n-3HUFA) including eicosapentaenoic acid (EPA, 20:5n-3), docosapentaenoic acid (DPA, 22:5n-3), docosahexaenoic acid (DHA, 22:6n-3), and tetracosahexaenoic acid (THA, 24:6n-3) were compared in the HepG2 cell model. None of the n-3HUFAs affected the viability of the cells. THA exerted the strongest suppression on the synthesis of triacylglycerol and cholesteryl ester (ChE), and the order of the strength of suppression was found to be THA > DHA > DPA > EPA. The mRNA level of fatty acid synthase was suppressed by the n-3HUFAs and the order of the strength of suppression by n-3HUFAs was the same in both triacylglycerol and ChE synthesis. These findings support previous animal test results using EPA, DPA, and DHA. In conclusion, both the number of carbon atoms and double bonds in an n-3HUFA structure has an effect on lipid metabolism in HepG2 cells.
- 著者
- Hiroki Ishida Tomoaki Kyoden Hiroto Furukawa
- 出版者
- The Institute of Electrical Engineers of Japan
- 雑誌
- IEEJ Journal of Industry Applications (ISSN:21871094)
- 巻号頁・発行日
- vol.11, no.1, pp.59-68, 2022-01-01 (Released:2022-01-01)
- 参考文献数
- 26
- 被引用文献数
- 2
In this study, parity-time symmetry (PTS) was applied to a wireless power transfer (WPT) system in the low-frequency range of 30-40kHz. A series-parallel topology was analyzed using the coupled mode theory. It was demonstrated that PTS can be preserved over a long transmission distance even at low frequencies by reducing the self-inductance of the receiver coil. The receiver solenoid coil (dimensions: 71 × 30 × 7.4mm, mass: 45.6g, self-inductance: 119µH) was able to maintain a transmission power of 23±1W and an efficiency of 83±1% within a distance of 12-40mm. In addition, the suitable coil orientation range was significantly increased from ±5° to ±65°. The power conversion efficiency of a switching-mode amplifier based on a class-D inverter reached 97% at low frequency. These results are expected to contribute to the expansion of PTS-WPT applications.