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오늘 본 자료
atsushi Kojima,A. Itakura,H. Kakiuchi,H. Higaki,K. Ishii,M. Ichimura,M. Yoshikawa,N. Kaidou,S. Fujimoto,T. Cho,T. Yamaguchi,Y. Miyata 한국물리학회 2006 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.49 No.III
The radial particle flux induced by drift-type fluctuations is observed by use of a gold neutral beam probe in the tandem mirror GAMMA 10. When the drift waves are excited in the plasma, the measured phase difference between the density and potential fluctuations is not zero; the radial profile of the phase difference is not constant. This showed that the radial particle flux had some profile and then the density profile would be varied due to the radial particle transport induced by the fluctuations through the radial particle flux. Experimental results showed the density reduction due to the transport induced by the drift-type fluctuations. The phase difference is an important parameter to decide the radial particle flux. The profiles of the phase difference are measured to understand the decision mechanism of the phase difference. The radial profile of the phase difference is varied by the ion heating power, the density and the potential profiles. As a result, the phase difference had a correlation with the difference between the local drift frequency (the electron diamagnetic drift frequency and the E×B drift frequency) and the observed frequency.
Ohkubo, Kei,Fujimoto, Atsushi,Fukuzumi, Shunichi American Chemical Society 2013 JOURNAL OF THE AMERICAN CHEMICAL SOCIETY - Vol.135 No.14
<P>Photocatalytic oxygenation of benzene to phenol occurs under visible-light irradiation of 2,3-dichloro-5,6-dicyano-<I>p</I>-benzoquinone (DDQ) in an oxygen-saturated acetonitrile solution of benzene and <I>tert</I>-butyl nitrite. The photocatalytic reaction is initiated by photoinduced electron transfer from benzene to the triplet excited state of DDQ.</P><P><B>Graphic Abstract</B> <IMG SRC='http://pubs.acs.org/appl/literatum/publisher/achs/journals/content/jacsat/2013/jacsat.2013.135.issue-14/ja402303k/production/images/medium/ja-2013-02303k_0010.gif'></P><P><A href='http://pubs.acs.org/doi/suppl/10.1021/ja402303k'>ACS Electronic Supporting Info</A></P>
Ohkubo, Kei,Fujimoto, Atsushi,Fukuzumi, Shunichi Royal Society of Chemistry 2011 Chemical communications Vol.47 No.30
<P>Photooxygenation of cyclohexane by O<SUB>2</SUB> occurs efficiently under visible-light irradiation of an O<SUB>2</SUB>-saturated acetonitrile solution containing 9-mesityl-10-methylacridinium ions (Acr<SUP>+</SUP>–Mes) and HCl to yield cyclohexanone, cyclohexanol and hydrogen peroxide. The photocatalytic reaction is initiated by electron transfer from Cl<SUP>−</SUP> to the mesitylene radical cation moiety.</P> <P>Graphic Abstract</P><P>Photooxygenation of cyclohexane by O<SUB>2</SUB> occurs efficiently under visible-light irradiation of an O<SUB>2</SUB>-saturated acetonitrile solution containing 9-mesityl-10-methylacridinium ions (Acr<SUP>+</SUP>–Mes) and HCl to yield cyclohexanone, cyclohexanol and hydrogen peroxide. <IMG SRC='http://pubs.rsc.org/services/images/RSCpubs.ePlatform.Service.FreeContent.ImageService.svc/ImageService/image/GA?id=c1cc12534f'> </P>
Koneri, Kenji,Hirono, Yasuo,Fujimoto, Daisuke,Sawai, Katsuji,Morikawa, Mitsuhiro,Murakami, Makoto,Goi, Takanori,Iida, Atsushi,Katayama, Kanji,Yamaguchi, Akio The Korean Gastric Cancer Association 2013 Journal of gastric cancer Vol.13 No.1
Alpha-fetoprotein-producing gastric cancer is associated with poor prognosis because of frequent liver and lymph node metastasis. We present a case with synchronous liver metastasis who survived for 5 years. A 69-year-old man with upper abdominal pain was referred to our hospital. Gastrointestinal endoscopy revealed a Borrmann II-like tumor in the lower part of the stomach. Computed tomography revealed a tumor in the left lobe of the liver. Serum alpha-fetoprotein levels were markedly increased. We performed distal gastrectomy after administering oral tegafur/gimeracil/oteracil potassium and administered hepatic intra-arterial cisplatin injection. Liver metastasis showed partial response on computed tomography. Despite left hepatic lobectomy, further metastases to the liver and mediastinal lymph nodes became difficult to control. After sorafenib tosylate administration, stabilization of the disease was observed for 4 months. We conclude that hepatic intra-arterial chemotherapy and oral administration of sorafenib tosylate may potentially improve the prognosis in such cases.
Kenji Koneri,Yasuo Hirono,Daisuke Fujimoto,Katsuji Sawai,Mitsuhiro Morikawa,Makoto Murakami,Takanori Goi,Atsushi Iida,Kanji Katayama,Akio Yamaguchi 대한위암학회 2013 Journal of gastric cancer Vol.13 No.1
Alpha-fetoprotein–producing gastric cancer is associated with poor prognosis because of frequent liver and lymph node metastasis. We present a case with synchronous liver metastasis who survived for 5 years. A 69-year-old man with upper abdominal pain was referred to our hospital. Gastrointestinal endoscopy revealed a Borrmann II-like tumor in the lower part of the stomach. Computed tomography revealed a tumor in the left lobe of the liver. Serum alpha-fetoprotein levels were markedly increased. We performed distal gastrectomy after administering oral tegafur/gimeracil/oteracil potassium and administered hepatic intra-arterial cisplatin injection. Liver metastasis showed partial response on computed tomography. Despite left hepatic lobectomy, further metastases to the liver and mediastinal lymph nodes became difficult to control. After sorafenib tosylate administration, stabilization of the disease was observed for 4 months. We conclude that hepatic intra-arterial chemotherapy and oral administration of sorafenib tosylate may potentially improve the prognosis in such cases.
Ogon Izaya,Takashima Hiroyuki,Morita Tomonori,Oshigiri Tsutomu,Terashima Yoshinori,Yoshimoto Mitsunori,Fukushi Ryunosuke,Fujimoto Shutaro,Emori Makoto,Teramoto Atsushi,Takebayashi Tsuneo,Yamashita Tos 대한척추외과학회 2020 Asian Spine Journal Vol.14 No.5
Study Design: Cross-sectional study.Purpose: The purpose of this study was to elucidate the relevance among Schmorl’s node (SN), chronic low back pain (CLBP), and intervertebral disc degeneration (IVDD) with the use of magnetic resonance imaging T2 mapping.Overview of Literature: SN may be combined with CLBP and/or IVDD; however, their relationship has not been determined to date.Methods: A total of 105 subjects were included (48 men and 57 women; mean age, 63.2±2.7 years; range, 22–84 years). We analyzed five functional spinal unit levels (L1–S1) and evaluated the T2 values of the anterior annulus fibrosus (AF), nucleus pulposus, and posterior AF. We compared the low back pain (LBP) Visual Analog Scale (VAS) scores and the T2 values in each decade with or without SN.Results: There were no remarkable differences in SN prevalence rate regarding age decade or gender. SNs were more prevalent in the upper 2 levels (70.3%). LBP VAS scores with and without SN were 64.7±4.3 mm and 61.9±2.8 mm, respectively, with no significant differences between the groups (p =0.62). The T2 values of anterior AF with SN were significantly lower than those without SN in patients in their 50s, 60s, 70s, and 80s (p <0.01).Conclusions: SN presence is not itself a risk factor for CLBP; however, it indicates IVDD of the anterior AF in subjects with SN who are ≥50 years old.