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Hiroyuki Kanao,Kazuko Fujiwara,Keiko Ebisawa,Tomonori Hada,Yoshiaki Ota,Masaaki Andou 대한부인종양학회 2014 Journal of Gynecologic Oncology Vol.25 No.3
Objective: This study was conducted to ascertain the correlation between preserved pelvic nerve networks and bladder function after laparoscopic nerve-sparing radical hysterectomy. Methods: Between 2009 and 2011, 53 patients underwent total laparoscopic radical hysterectomies. They were categorized into groups A, B, and C based on the status of preserved pelvic nerve networks: complete preservation of the pelvic nerve plexus (group A, 27 cases); partial preservation (group B, 13 cases); and complete sacrifice (group C, 13 cases). To evaluate bladder function, urodynamic studies were conducted preoperatively and postoperatively at 1, 3, 6, and 12 months after surgery. Results: No significant difference in sensory function was found between groups A and B. However, the sensory function of group C was significantly lower than that of the other groups. Group A had significantly better motor function than groups B and C. No significant difference in motor function was found between groups B and C. Results showed that the sensory nerve is distributed predominantly at the dorsal half of the pelvic nerve networks, but the motor nerve is predominantly distributed at the ventral half. Conclusion: Various types of total laparoscopic nerve-sparing radical hysterectomies can be tailored to patients with cervical carcinomas.
Hepatic Involvement of Histiocytic Sarcoma: CT and MRI Findings
Takatoshi Kubo,Shigeru Kiryu,Hiroyuki Akai,Yasunori Ota,Arinobu Tojo,Hideo Yoshida,Naoya Kato,Yoshiyasu Nakano,Kuni Ohtomo 대한영상의학회 2016 Korean Journal of Radiology Vol.17 No.5
Histiocytic sarcoma in the liver is an extremely rare hematological malignancy. Herein, we reported the case of a 68-year-old woman who presented with characteristic wedge-shaped abnormality bounded by hepatic veins on computed tomography and magnetic resonance imaging of the liver. In the wedge-shaped area, decreased portal flow and the deposition of iron were observed. These imaging findings are consistent with intrasinusoidal tumor cell infiltration. A liver biopsy was performed, and histiocytic sarcoma was confirmed histopathologically.
Performance Analysis of Ubiquitous Power Systems under Coordinated Control of System Elements
Liyanage, Kithsiri M.,Masuta, Taisuke,Shimizu, Koichiro,Kihara, Hiroyuki,Yokoyama, Akihiko,Ota, Yutaka,Nakajima, Tatsuhito,Taniguchi, Haruhito The Korean Institute of Electrical Engineers 2011 The Journal of International Council on Electrical Vol.1 No.1
The trend of integrating renewable energy sources into power networks is becoming common in practice, making power systems to be more ubiquitous in nature. The connection of renewable sources in large numbers at distribution level could cause adverse power fluctuations. By employing battery energy storage systems, these fluctuations can be reduced. However economic constraints imposed by high battery cost may not justify liberal use of battery storage to control power fluctuations. The authors have previously shown the possibility of reducing battery energy storage systems' capacity without degrading the performance in terms of energy capturing efficiency and arresting power fluctuations of a ubiquitous power network through coordinated control of elements. Meantime there are attempts to make use the battery energy storage available in electric vehicles to provide a cushion against power and frequency fluctuations caused by renewable generation. In this paper authors presents a comparison between the effectiveness of conventional battery energy storage system and that of battery energy storage available in electric vehicles to improve the performance of ubiquitous power network under coordinated control. This study has shown that energy storage from electric vehicles can outperform conventional battery energy storage systems of similar capacity range under certain conditions.
Nanostructured Anode Material for High-Power Battery System in Electric Vehicles
Amine, Khalil,Belharouak, Ilias,Chen, Zonghai,Tran, Taison,Yumoto, Hiroyuki,Ota, Naoki,Myung, Seung-Taek,Sun, Yang-Kook WILEY-VCH Verlag 2010 Advanced Materials Vol.22 No.28
<B>Graphic Abstract</B> <P>A new MSNP-LTO anode is developed to enable a high-power battery system that provides three times more power than any existing battery system. It shows excellent cycle life and low-temperature performance, and exhibits unmatched safety characteristics. <img src='wiley_img_2010/09359648-2010-22-28-ADMA201000441-content.gif' alt='wiley_img_2010/09359648-2010-22-28-ADMA201000441-content'> </P>