• 제목/요약/키워드: Hiroshima

검색결과 456건 처리시간 0.026초

OPTICAL-INFRARED AND HIGH-ENERGY ASTRONOMY COLLABORATION AT HIROSHIMA ASTROPHYSICAL SCIENCE CENTER

  • UEMURA, MAKOTO;YOSHIDA, MICHITOSHI;KAWABATA, KOJI S.;MIZUNO, TSUNEFUMI;TANAKA, YASUYUKI T.;AKITAYA, HIROSHI;UTSUMI, YOUSUKE;MORITANI, YUKI;ITOH, RYOSUKE;FUKAZAWA, YASUSHI;TAKAHASHI, HIROMITSU;OHNO, MASANORI;UI, TAKAHIRO;TAKAKI, KATSUTOSHI;EBISUDA, NANA;KAWAGUCHI, KENJI;MORI, KENSYO;OHASHI, YUMA;KANDA, YUKA;KAWABATA, MIHO;TAKATA, KOJI;NAKAOKA, TATSUYA
    • 천문학논총
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    • 제30권2호
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    • pp.679-682
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    • 2015

  • The Hiroshima Astrophysical Science Center (HASC) was founded in 2004 at Hiroshima University, Japan. The main mission of this institute is the observational study of various transient objects including gamma-ray bursts, supernovae, novae, cataclysmic variables, and active galactic nuclei by means of multi-wavelength observations. HASC consists of three divisions; the optical-infrared astronomy division, high-energy astronomy division, and theoretical astronomy division. HASC is operating the 1.5m optical-infrared telescope Kanata, which is dedicated to follow-up and monitoring observations of transient objects. The high-energy division is the key operation center for the Fermi gamma-ray space telescope. HASC and the high-energy astronomy group in the department of physical science at Hiroshima University are closely collaborating with each other to promote multi-wavelength time-domain astronomy. We report the recent activities of HASC and some science topics pursued by this multi-wavelength collaboration.

  • https://doi.org/10.5303/PKAS.2015.30.2.679 인용 PDF KSCI

Indications for Dental Floss Clip Traction During Gastric Endoscopic Submucosal Dissection by Less-Experienced Endoscopists

  • Hirosato Tamari;Shiro Oka;Takahiro Kotachi;Hajime Teshima;Junichi Mizuno;Motomitsu Fukuhara;Hidenori Tanaka;Akiyoshi Tsuboi;Ken Yamashita;Ryo Yuge;Yuji Urabe;Yasuhiko Kitadai;Koji Arihiro;Shinji Tanaka
    • Journal of Gastric Cancer
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    • 제23권4호
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    • pp.512-522
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    • 2023

  • Purpose: Dental floss clip (DFC) traction-assisted endoscopic submucosal dissection (ESD) is widely performed owing to its simplicity. This study aimed to clarify the appropriate indications for the DFC traction method in early gastric cancer when ESD is performed by less-experienced endoscopists. Methods and Methods: We retrospectively analyzed 1,014 consecutive patients who had undergone gastric ESD performed by less-experienced endoscopists between January 2015 and December 2020. Gastric ESD was performed without DFC in all cases before December 2017 [DFC (-) group, 376 cases], and ESD was performed with DFC in all cases after January 2018 [DFC (+) group, 436 cases]. The procedure time and rates of en bloc resection, complete resection, and adverse events of the groups were compared. Results: The procedure time did not differ significantly between the 2 groups. However, when comparing lesions >20 mm, the procedure time in the DFC (+) group was significantly shorter than that in the DFC (-) group (95±46 vs. 75±31, P<0.01). The procedure time for lesions located in the greater curvature of the upper or middle stomach and lesions >20 mm located in the lesser curvature side of the stomach in the DFC (+) group was significantly shorter than that in the DFC (-) group. Conclusions: The indications for DFC during gastric ESD by less-experienced endoscopists include lesions located in the greater curvature of the upper or middle stomach, and lesions >20 mm located in the lesser curvature of the stomach.

  • https://doi.org/10.5230/jgc.2023.23.e37 인용 PDF

Nutritional Status Indicators Affecting the Tolerability of Postoperative Chemotherapy After Total Gastrectomy in Patients With Gastric Cancer

  • Toyota, Kazuhiro;Mori, Masayuki;Hirahara, Satoshi;Yoshioka, Shoko;Kubota, Haruna;Yano, Raita;Kobayashi, Hironori;Hashimoto, Yasushi;Sakashita, Yoshihiro;Yokoyama, Yujiro;Murakami, Yoshiaki;Miyamoto, Katsunari
    • Journal of Gastric Cancer
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    • 제22권1호
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    • pp.56-66
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    • 2022

  • Purpose: Nutritional problems after gastrectomy affect continuation of postoperative chemotherapy. There have been no studies limited to total gastrectomy, which is particularly prone to nutritional problems. In this study, we aimed to investigate the factors that predict the continuation of postoperative chemotherapy. Materials and Methods: We included 101 patients who underwent curative total gastrectomy and postoperative chemotherapy at Hiroshima Memorial Hospital. The effects of 37 factors, including perioperative inflammatory, nutritional, and tumor status, on the persistence of postoperative chemotherapy were analyzed. Results: In univariate analysis of preoperative factors, age, carbohydrate antigen 19-9, platelet-to-neutrophil ratio, Onodera's prognostic nutritional index (PNI), controlling nutritional status score, and nutritional risk screening (NRS-2002) score were significantly associated with the duration of postoperative chemotherapy. In multivariate analysis of preoperative factors, age (≥74 years) was an independent factor for a shorter duration of postoperative chemotherapy (hazard ratio [HR], 5.24; 95% confidence interval [CI], 2.19-12.96; P<0.01). In univariate analysis of factors before postoperative chemotherapy, intraoperative blood loss, perioperative weight loss rate, postoperative performance status, PNI, albumin-to-bilirubin index, and NRS-2002 score were significantly associated with the duration of postoperative chemotherapy. In multivariate analysis of factors before postoperative therapy, age (≥74 years) (HR, 5.75; 95% CI, 1.90-19.49; P<0.01) and PNI (<39) (HR, 3.29; 95% CI, 1.26-8.56; P=0.02) were independent factors for a shorter duration of postoperative chemotherapy. Conclusions: Age and PNI are useful predictors of postoperative chemotherapy intolerance after total gastrectomy and may determine the treatment strategy and timing of chemotherapy initiation.

  • https://doi.org/10.5230/jgc.2022.22.e5 인용 PDF KSCI