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Live Electrooptic Imaging Camera for Real-Time Visual Accesses to Electric Waves in GHz Range
Masahiro Tsuchiya,Takahiro Shiozawa 한국전자파학회JEES 2011 Journal of Electromagnetic Engineering and Science Vol.11 No.4
Recent progresses in the live electrooptic imaging (LEI) technique are reviewed with emphasis on its functionality of real-time visual accesses to traveling electric waves in the GHz range. Together with the principles, configurations, and procedures for the visual observation experiments by an LEI camera system, the following results are described as examples indicating the wide application ranges of the technique; Ku-band waves on arrayed planar antennas, waves on a Gb/s-class digital circuit, W-band waves traveling both in slab-waveguide modes and aerially, backward-traveling wave along composite right/left-handed transmission line, and, waves in monolithic microwave integrated circuit module case.
C60(OH)n-ASSISTED DISPERSION OF SINGLE-WALLED CARBON NANOTUBES
YUTAKA MAEDA,TAKAAKI KATO,JUNKI HIGO,TADASHI HASEGAWA,TAKAHIRO KITANO,TAKAHIRO TSUCHIYA,TAKESHI AKASAKA,TOSHIYA OKAZAKI,JING LU,SHIGERU NAGASE 성균관대학교(자연과학캠퍼스) 성균나노과학기술원 2008 NANO Vol.3 No.6
We demonstrate that C60(OH)n-assists the dispersion of SWNTs in aqueous and nonaqueous solutions, which effectively exfoliates large-diameter SWNTs. The SWNT dispersions are characterized by absorption and photoluminescence spectra.
Atsushi Nanashima,Masahide Hiyoshi,Naoya Imamura,Koichi Yano,Takeomi Hamada,Takashi Wada,Takahiro Nishida,Kazuyo Tsuchiya,Fumiaki Kawano,Shinsuke Takeno,Takuto Ikeda 한국간담췌외과학회 2018 Annals of hepato-biliary-pancreatic surgery Vol.22 No.4
Backgrounds/Aims: The present study analyzed the postoperative outcomes in patients who underwent hepatectomy or pancreatectomy, with a history of intra-abdominal surgery involving other organs, to elucidate surgical efficacy. Methods: We examined the perioperative parameters in 28 patients who underwent hepatectomy (n=12) and pancreatectomy (n=16) after receiving prior abdominal organ resection (esophagectomy, n=2; gastrectomy, n=5; resection of small intestine, n=2; appendectomy, n=5; colorectal resection, n=9; hepatectomy, n=1; cholecystectomy, n=3; splenectomy, n=2, pancreatectomy ,right adrenectomy, nephrectomy and myoma uteri, n=1 each). Results: Age, gender, a history of comorbidities, and primary diseases were not significantly different between the groups. The present operation was predominantly indicated for liver metastases in all patients undergoing hepatectomy. Several diseases were detected in pancreaticoduodenectomy (PD) patients. Laboratory data were not significantly different between groups. Although operating time and blood loss during hepatectomy did not differ significantly between the groups, the operating time was significantly longer in patients undergoing PD compared with distal pancreatectomy (p<0.05). Red cell blood transfusion was most frequently used in patients who underwent major hepatectomy and PD (p<0.05). The prevalence of postoperative complications was not significantly different between groups. Hospital death was not observed and the period of hospital stay did not differ between groups. Conclusions: Carefully scheduled hepatectomy or pancreatectomy is safe even in cases with prior abdominal surgery under the present strategy.
TADASHI HASEGAWA,TAKESHI AKASAKA,YUTAKA MAEDA,MASAHIRO HASHIMOTO,MAKOTO KANDA,TAKAHIRO TSUCHIYA,TAKATSUGU WAKAHARA,YUHEI MIYAUCHI,SHIGEO MARUYAMA,JING LU,SHIGERU NAGASE 성균관대학교(자연과학캠퍼스) 성균나노과학기술원 2007 NANO Vol.2 No.4
Single-walled carbon nanotubes (SWNTs) synthesized by catalytic decomposition of an alcohol were purified by extraction. The purified SWNTs were characterized on the basis of visible-near infrared (vis-NIR) absorption, photoluminescence and Raman spectroscopic analyses, scanning electron microscopy (SEM) observation, and thermal analysis. Selective extraction of metallic nanotubes was also achieved by the extraction condition.