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Moon, Yuseok,Cho, Seok Goo,Lee, Jong Wook,Min, Woo Sung,Kim, Chun Choo,Lee, Hae-Kyung,Kim, Yong-Goo,Chang, Hong Seok,Chae, Hyun Seok,Kim, Ho-Youn,Tani, Kenzaburo Mary Ann Liebert 2006 Cancer biotherapy & radiopharmaceuticals Vol.21 No.3
<P>Radiation therapy and chemotherapy have little effect on renal-cell carcinomas (RENCAs). We investigated the effect of the tumor vaccination strategy on preventing tumor formation after a challenge with RENCA. The hepatitis surface antigen (HBsAg) was used to enhance the antitumor immunity and tumor vaccination efficiency. RENCA cells expressing HBsAg (RENCA/HBS) were completely susceptible to HBsAg vaccination, which implies that HBsAg vaccination induces specific antitumor immunity against HBsAg- expressing cancer cells. As with HBsAg vaccination, vaccination with irradiated RENCA/HBS retarded tumor formation following a RENCA/HBS challenge. After HBsAg vaccination, the irradiated RENCA/HBS tumor vaccine completely prevented the tumor formation by RENCA/HBS. Tumor vaccination with irradiated RENCA/HBS (5 x 10(4) cells), but not with RENCA, reduced the tumor rate after a challenge with 5 x 10(6) RENCA cells, whereas a lower tumor load was overcome by the RENCA vaccination alone. These results confirm the postulate that RENCA/HBS vaccination elicits an antitumor immune response to some putative antigens or enhances the general immune competence in immunosuppressed renal tumor patients.</P>
DSP를 이용한 2㎾급 고효율 Bridgeless PFC Converter
이윤재(Yunjae Lee),유광민(Gwangmin Yoo),신헌철(Heoncheol Shin),고돈열(Donyeol Ko),정호철(Hochul Jung),정유석(Yuseok Jeong),이준영(Junyoung Lee) 전력전자학회 2010 전력전자학술대회 논문집 Vol.2010 No.7
최근 에너지의 근원이 되는 원유가의 급등으로 인해 에너지 소비에 대한 국내외적인 관심이 증폭되어 에너지를 소비하는 측의 효율개선에 대한 요구가 급등하고 있으며 전력변환기 시장에서도 효율이 전력변환기의 사용자의 선택기준이 될 정도로 매우 강력한 실정이다. 본 논문에서는 DSP(TMS320F28035)를 이용한 2kW급 고효율 Bridgeless PFC Converter를 제안한다. 제안된 Converter를 실험을 통해 고효율과 고전력밀도의 기능을 검증하였다.