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RISS 인기검색어
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- 저자 : ( Shuji Takemoto ) (검색결과 3 건)
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( Kimio Ushijima ),( Shuji Takemoto ),( Kouichiro Kawano ),( Shin Nishio ),( Atsumu Terada ),( Naotake Tsuda ),( Gonosuke Sonoda ),( Syun Ichiro Ota ),( Toshiharu Kamura ) 대한산부인과학회 2012 Obstetrics & Gynecology Science Vol.55 No.4
Type III radical abdominal hysterectomy (RAH) is standard care for early stage cervical cancer. For the past few decades, there has been a remarkable shift from surgery to radiation, in the treatment choice for stage 1b2 and 2b cervical cancer in Japan. It is still controversial, however because some of those cases recommended RAH as a suitable treatment strategy. About 8% to 10% of RAH are abandoned because of tumor status. Recent preoperative screening cannot always detect them preoperatively. Various kinds of new surgical instruments, such as bipolar scissors and the electro vessel sealing system LigaSure have contributed to reducing the operation time and blood loss, in performing RAH. Furthermore, various kinds of devices are on the market. Surgeons should choose suitable instruments depending on the state of the disease and the patient.
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Naotake Tsuda,Kimio Ushijima,Kouichiro Kawano,Shuji Takemoto,Shin Nishio,Gounosuke Sonoda,Toshiharu Kamura 대한부인종양학회 2014 Journal of Gynecologic Oncology Vol.25 No.3
Objective: A number of new techniques have been developed to prevent lymphocele formation after pelvic lymphadenectomy in gynecologic cancers. We assessed whether the electrothermal bipolar vessel sealing device (EBVSD) could decrease the incidence of postoperative lymphocele secondary to pelvic lymphadenectomy. Methods: A total of 321 patients with gynecologic cancer underwent pelvic lymphadenectomy from 2005 to 2011. Pelvic lymphadenectomy without EBVSD was performed in 134 patients, and pelvic lymphadenectomy with EBVSD was performed in 187 patients. We retrospectively compared the incidence of lymphocele and symptoms between both groups. Results: Four to 8 weeks after operation, 108 cases of lymphocele (34%) were detected by computed tomography scan examination. The incidence of lymphocele after pelvic lymphadenectomy was 56% (75/134) in the tie ligation group, and 18% (33/187) in the EBVSD group. We found a statistically significant difference in the incidence of lymphocele between both groups (p<0.01). To detect the independent risk factor for lymphocele development, we performed multivariate analysis with logistic regression for three variables (device, number of dissected lymph nodes, and operation time). Among these variables, we found a significant difference (p<0.001) for only one device. Conclusion: Use of the EBVSD during gynecological cancer operation is useful for preventing the development of lymphocele secondary to pelvic lymphadenectomy.
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( Teppei Komiya ),( Takuma Maeda ),( Yuki Kajino ),( Hirofumi Nakayama ),( Takayuki Shimaoka ),( Takayuki Hirao ),( Shuji Watanabe ),( Makoto Takemoto ),( Naoya Maeda ),( Akiyuki Ukai ),( Fumihiro Kas 한국폐기물자원순환학회(구 한국폐기물학회) 2019 한국폐기물자원순환학회 심포지움 Vol.2019 No.1
Approximately 20% of solid waste in Japan is disposed of at coastal landfill sites. It is an issue that it takes long-term to stabilize coastal landfill sites. Municipal solid waste incineration bottom ash (BA) is one of main wastes landfilled at coastal landfill sites. It is known that finer particles contain more contaminants in BA1), and it was demonstrated that the removal of finer particles from BA produced the lowering pH of leachate as well as the increase of permeability of the landfilled waste layer2). In this study, open channel (OC) classification was focused on as a feasible technique to remove finer particles from BA on a coastal landfill site, and its demonstrational experiment was carried out in order to clarify if the fine particle fraction (d<0.425mm) (FPF) could be removed from BA by OC classification and the settling characteristics of BA in OC. Fig. 1 shows the experimental apparatus. The sea water in a coastal landfill site was pumped up and flowed in OC, and BA is supplied on the surface of the flowing water. After completions of the settling and outflow of BA, saucers on the bottom of OC was collected, and the dry weight and particle size distribution of the BA sediment in each saucer were measured. Table 1 shows the experimental condition. The settling section means the part of OC from the BA supply point to the end of OC. Fig. 2 shows the removal ratio of FPF by OC classification, which is the ratio of the dry weight of FPF in the BA sediment to that in the BA supplied. The largest removal ratio was 61% in Case 3 with the largest water flow velocity and the shortest length of settling section. Fig. 3 shows the median of the settling velocity of BA in OC (MSV) compared with the theoretical settling velocity by Allen’s and Newton’s laws (TSV). The MSV of BA particles greater than 3mm was almost 50% of TSV, and MSV became closer to TSV as BA’s particle size became smaller. The MSV of BA particles with a diameter of 0.425mm was approximately 80% of TSV.
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