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Formation and characterization of MEH-PPV/PCBM-based bulk heterojunction solar cells
Takeo Oku,Syuichi Nagaoka,Atsushi Suzuki,Kenji Kikuchi,Yasuhiko Hayashi,Hayato Sakuragi,Tetsuo Soga 한양대학교 세라믹연구소 2008 Journal of Ceramic Processing Research Vol.9 No.6
Polymer/fullerene bulk heterojunction solar cells with poly[2-methoxy-5-(20-ethylhexoxy)-1,4-phenylenevinylene] (MEH-PPV), zinc-phthalocyanine (ZnPc) and 6,6-phenyl C61-butyric acid methyl ester (PCBM), were produced and characterized. A device based on MEH-PPV and PCBM provided better efficiency, fill factor and short-circuit current compared to those of a device on MEH-PPV(ZnPc) and PCBM. The solar cells with a MEH-PPV and PCBM structure showed a higher photoresponse in the range of 300 to 60 nm. The energy levels of the molecules were calculated and are discussed. Polymer/fullerene bulk heterojunction solar cells with poly[2-methoxy-5-(20-ethylhexoxy)-1,4-phenylenevinylene] (MEH-PPV), zinc-phthalocyanine (ZnPc) and 6,6-phenyl C61-butyric acid methyl ester (PCBM), were produced and characterized. A device based on MEH-PPV and PCBM provided better efficiency, fill factor and short-circuit current compared to those of a device on MEH-PPV(ZnPc) and PCBM. The solar cells with a MEH-PPV and PCBM structure showed a higher photoresponse in the range of 300 to 60 nm. The energy levels of the molecules were calculated and are discussed.
(Yeun hwa Gu),(Hasegawa Takeo),(Suzuki Ikukatsu),(Hayashi Ikuo),(Kyoo Seok Ahn),(Tawaraya Hitoshi) 경희대학교 한의학연구소 2000 JOURNAL OF ORIENTAL MEDICINE Vol.5 No.1
In this study abundant malformations of ICR mice in the organogenesis stages were observed and the radioprotection effect of Macro-Glucan(β-1-3glucan) was shown. This research examined the radioprotection effect of Macro-Glucan(β-1-3glucan) and its terato
A Study of the radioprotection effect of macro-glucan (β-1-3glucan) on thefetuses of ICR mice
Gu, Yeun-hwa,Hasegawa, Takeo,Suzuki, Ikukatsu,Hayashi, Ikuo,Ahn, Kyoo-Seok,Tawaraya, Hitoshi INSTITUTE OF ORIENTAL MEDICINE KYUNG-HEE UNIVERSIT 2000 JOURNAL OF ORIENTAL MEDICINE Vol.5 No.1
In this study abundant malformations of ICR mice in the organogenesis stages were observed and the radioprotection effect of Macro-Glucan(β-1-3glucan) was shown. This research examined the radioprotection effect of Macro-Glucan(β-1-3glucan) and its teratogenic properties. The reason it has a preventive effect on a tall fetus was examined in the research. We examined the determination stage (organogenesis), and pointed to malformation toward the radiation in the enviornmental agent to the malformaiton. Moreover, we examined the cellularis level of the embryos toward the radiation and analyzed the mechanism of the protection effect of the Macro-Glucan(-1-3glucan) from malformation induction by the radiation. Therefore, the purpose of this research is to get a foundation of data of the radioprotection effect of Macro-Glucan(-1-3glucan). This study produced the following results : It was made clear that Macro-Glucan(-1-3glucan) had a radioprotection effect against embryonic death. Radioprotection effect was recognized as the teratogenesis rate by Macro-Glucan(-1-3glucan)'s administering it before the exposure. Therefore, the subject faced radiation exposure by the Macro-Glucan(-1-3glucan) administration, and radiological protecting effect was made clear.
Radioprotection Effects to the Radiation Side Effect in EEM (Extracts of Edible Mushrooms)
Gu, Yeun-Hwa,Masaki, Matsumori,Suzuki, Ikukatu,Takeo, Hasegawa,Yuuichi, Ukawa,Hitoshi, Tawaraya,Ikuo, Hayashi,Ahn, Kyoo-Seok INSTITUTE OF ORIENTAL MEDICINE KYUNG-HEE UNIVERSIT 2003 JOURNAL OF ORIENTAL MEDICINE Vol.6 No.1
Presently, raditherapy is often used alone or in combination with anti-cancer medicine as a treatment for cancer. Chemosynthesis has been used as a radiation protection medicine. But, its use has been restricted due to serious side effects. ICR mice have often been used for malformation experiments as they were used in this research. Here, EEM (extracts of edible mushrooms (and extraction from Flammulina velutires and lyuophyllum ulmarium)), a natural product, was used as a radioprotective agent and its effects were examined. A decline in the fetus malformation rate was recognized when giveing EEM before the radiation irradiation. Moreover, a repression in the decrease of fetus weight was recognized, and the effect on radiation protection of EEM was explained at the individual level. And, I had the effect on protection that faced a corpuscle cell by the radiation by giving EEM was explained in the same way too. As for the cell level as well, it was proved that there was an effect on protection against radiation irradiation in the same way as the individual level. Furthermore, an examination was done about the effects on the external malformation to the radiation, the embryonic death rate and the sensitivity of the lymphocyte at the organogenesis stage. Furtheromore, the study was done about the effects on the malformation to the radiation, the embryonic death rate and the sensitivity of the lymphocyte at the fetus of the organogenesis stage.
Radioprotection Effects and the Anti-Cancer Effects of the Species (Miroku-Tea)
Gu, Yeun-Hwa,Suzuki, Ikukatu,Hasegawa, Takeo,Hayashi, Ikuo,Hitoshi, Tawaraya,Ahn, Kyoo-Seok INSTITUTE OF ORIENTAL MEDICINE KYUNG-HEE UNIVERSIT 2001 JOURNAL OF ORIENTAL MEDICINE Vol.6 No.1
In recent years the effectiveness of species (Miroku-Tea) as an anti-cancer, anti0biotic effect and anti-virus effect has become more widely known. Furthermore the beneficial effects of species (Miroku-Tea) leaves have also been studied. In this study, we investigated measurement of blood cells, the NK cell activity, the radio-protective and anti-cancer effects of species (Miroku-Tea) extract. The leucocytes and the lymphocyte were transietnly increased after injection of species (Miroku-Tea). Anti-tumor effect was occurred after the injuection of species (Miroku-Tea). NK cells activity increased 2 times after the injection of species (Miroku-Tea) compared with the control group. Radiation protection occurred from the inhibition of body weight loss and also a prolonged the surviving fraction after the injection of species (Miroku-Tea).
( Norihiro Furusyo ),( Ahmed H. Walaa ),( Kunimitsu Eiraku ),( Kazuhiro Toyoda ),( Eiichi Ogawa ),( Hiroaki Ikezaki ),( Takeshi Ihara ),( Takeo Hayashi ),( Mosaburo Kainuma ),( Masayuki Murata ),( Jun 대한간학회 2011 Gut and Liver Vol.5 No.4
Background/Aims: Helicobacter pylori infection causes gastritis, peptic ulcers and gastric malignancies, and its eradication has been advocated by many groups. We determined the H. pylori carrier status and eradication rates of patients with chronic hepatitis C virus (HCV) infection. Methods: In total, 76 chronically HCV-infected patients were enrolled for comparison with 228 HCV-noninfected, age- and sex-matched controls. H. pylori infection was confirmed by H. pylori antibody and urea breath testing. Results: The H. pylori infection rate was significantly higher for HCV-infected patients (67 of 76, 88.2%) than for HCV-noninfected controls (158 of 228, 69.3%). Endoscopic fi ndings showed that the rates of gastric ulcers and gastritis were significantly higher for the 67 HCV-infected patients with H. pylori infection (34.3% and 77.6%) than for the 158 HCV-noninfected controls with H. pylori infection (15.2% and 57.6%). Treatment to eradicate H. pylori had a signifi cantly higher success rate for HCV-infected patients (61 of 67, 91.0%) than for HCV-noninfected controls (115 of 158, 72.8%). Conclusions: The markedly high H. pylori eradication rate observed in this study shows that eradication of H. pylori holds promise for the improvement of the long-term health condition of patients with chronic HCV infection. (Gut Liver 2011;5:447-453)