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- 저자 : Yusuke Tsuji (검색결과 5 건)
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Configurations of AC and DC-type Quality Control Center for a New Distribution System FRIENDS
Yusuke Hayashi,Masaki Saisyo,Toshifumi Ise,Kuchiro Tsuji 전력전자학회 2001 ICPE(ISPE)논문집 Vol.2001 No.10
Unbundled power quality service is paid much attention under the circumstances of deregulation and diversification of needs of customers for quality and price of electric power Moreover, distributed generators (DGs) such as photovoltaic generations and wind turbines will be introduced to distribution system more and more, and reverse flow of active power has possibility to cause new problems in the distribution system such as voltage rise of distribution line and protection problem<br/> Flexible, Reliable and Intelligent Electrical eNergy Delivery System, which is called FRIENDS, has been proposed as one of promising distribution system for such requirements, and intensive studies are under way One of features of the system is introducing Quality Control Center (QCC) into the system for unbundled power quality service and easy installation of DGs Two types of QCCs for such purposes are proposed, and simulation results are shown in this paper.<br/>
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Yohei Osada,Yusuke Tsuji 국립중앙과학관 2023 Journal of Asia-Pacific Biodiversity Vol.16 No.3
Cephitinea colonella (Erschoff, 1874) (Lepidoptera: Tineidae: Myrmecozelinae) is known as a pest ofstored products. However, detailed information on its life history is poor. In the present investigation,larvae of this species feeding on the rice bran were found in a rice mill. In order to make possible thecorrect identification of the immature stages of C. colonella, their morphology is described and illustrated. In addition, the larval character of the genus is morphologically discussed comparing from allied species.
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Screening for Lynch syndrome using risk assessment criteria in patients with ovarian cancer
Takashi Takeda,Kosuke Tsuji,Kouji Banno,Megumi Yanokura,Yusuke Kobayashi,Eiichiro Tominaga,Daisuke Aoki 대한부인종양학회 2018 Journal of Gynecologic Oncology Vol.29 No.3
Objective: Lynch syndrome is a cancer predisposition syndrome caused by germline mutation of DNA mismatch repair (MMR) genes. Lynch syndrome only causes about 0.4% of cases of ovarian cancer, which suggests that universal screening may not be cost-efficient. However, the frequency of Lynch syndrome in ovarian cancer is unclear in the Asian population. The goal of the study was to investigate a screening strategy using family history. Methods: The subjects were 129 patients with ovarian cancer. Clinical and family history were collected using a self-administered questionnaire, and Society of Gynecologic Oncology (SGO) criteria 2007 and PREMM5 were used for risk assessment. Microsatellite instability, immunohistochemistry, and methylation of MMR genes were analyzed. Results: Of the 129 cases, 25 (19.4%) met the SGO criteria, and 4 of these 25 had MSI-high and MMR deficiency. Two cases had loss of MSH2 and MSH6, indicating MSH2 mutation, and the other two had loss of MLH1 and PMS2, including one without MLH1 methylation indicating MLH1 mutation. These results show that screening using family history can detect Lynch syndrome in 12.0% (3/25) of ovarian cancer cases. The 3 cases were positive for PREMM5, but negative for Amsterdam II criteria and revised Bethesda guidelines. Genetic testing in one case with MSH2 and MSH6 deficiency confirmed the diagnosis of Lynch syndrome with MSH2 mutation. Conclusion: This is the first study of screening for Lynch syndrome in ovarian cancer using clinical and family history in an Asian population. This approach may be effective for diagnosis in these patients.
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( Tatsuya Hayashi ),( Satoshi Saitoh ),( Kei Fukuzawa ),( Yoshinori Tsuji ),( Junji Takahashi ),( Yusuke Kawamura ),( Norio Akuta ),( Masahiro Kobayashi ),( Kenji Ikeda ),( Takeshi Fujii ),( Tosiaki M 대한간학회 2017 Gut and Liver Vol.11 No.5
Background/Aims: Noninvasive liver fibrosis evaluation was performed in patients with nonalcoholic fatty liver disease (NAFLD). We used a quantitative method based on the he-patic volume acquired from gadoxetate disodium-enhanced (Gd-EOB-DTPA-enhanced) magnetic resonance imaging (MRI) for diagnosing advanced fibrosis in patients with NAFLD. Methods: A total of 130 patients who were diagnosed with NAFLD and underwent Gd-EOB-DTPA-enhanced MRI were retrospectively included. Histological data were available for 118 patients. Hepatic volumetric parameters, including the left hepatic lobe to right hepatic lobe volume ratio (L/R ratio), were measured. The usefulness of the L/R ratio for diag-nosing fibrosis ≥F3-4 and F4 was assessed using the area under the receiver operating characteristic (AUROC) curve. Multiple regression analysis was performed to identify vari-ables (age, body mass index, serum fibrosis markers, and histological features) that were associated with the L/R ratio. Results: The L/R ratio demonstrated good performance in differentiating advanced fibrosis (AUROC, 0.80; 95% confi-dence interval, 0.72 to 0.88) from cirrhosis (AUROC, 0.87; 95% confidence interval, 0.75 to 0.99). Multiple regression analysis showed that only fibrosis was significantly associat-ed with the L/R ratio (coefficient, 0.121; p<0.0001). Conclu-sions: The L/R ratio, which is not influenced by pathologi-cal parameters other than fibrosis, is useful for diagnosing cirrhosis in patients with NAFLD. (Gut Liver 2017;11:674- 683)
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Okada Eijiro,Yagi Mitsuru,Yamamoto Yusuke,Suzuki Satoshi,Nori Satoshi,Tsuji Osahiko,Nagoshi Narihito,Fujita Nobuyuki,Nakamura Masaya,Matsumoto Morio,Watanabe Kota 대한척추외과학회 2022 Asian Spine Journal Vol.16 No.3
Study Design: This is a retrospective study.Purpose: This study aims to evaluate the risk factor associated with pseudoarthrosis after placement of lateral interbody fusion (LIF) cages for adult spinal deformity (ASD) treatment. Overview of Literature: LIF technique is widely used for ASD correction. Furthermore, pseudoarthrosis is a major complication of fusion surgery required for revision surgery.Methods: This study included 42 patients with ASD (two men and 40 women; 112 segments; mean, 68.5±8.4 years; and mean follow-up, 31.6±17.0 months) who underwent LIF and posterior correction surgery. The concave slot of the LIF cage was filled with an autologous iliac crest bone graft (IBG), and the convex slot with a porous hydroxyapatite/collagen (HAp/Col) composite was soaked with bone marrow aspirate. Endplate injury, the gap between vertebral endplate and cage in the coronal or sagittal plane, and fusion status were evaluated using computed tomography multiplanar reconstruction at 12 months after surgery. Moreover, the associated risk factors for pseudoarthrosis were analyzed.Results: Fusion at LIF segments were observed in 71.4% segments at 12 months after surgery. Fusion on the concave slot (autologous IBG side), convex slot (porous HAp/Col composite side), and both concave and convex slots were observed in 66.1%, 37.5%, and 36.6% of patients, respectively. Moreover, pseudoarthrosis was observed in 28.6% at 12 months after surgery. Consequently, logistic regression analysis of the fusion at the LIF segment revealed that the gap between the LIF cage and endplate in the coronal plane (p=0.030; odds ratio, 0.183; 95% confidence interval, 0.030–0.183) was significantly associated with pseudoarthrosis at the LIF segments.Conclusions: ASD surgery fusion rate using LIF cages was 71.4% at 12 months after surgery. The fusion rate was higher on the concave slot filled with autologous IBG than on the convex slot filled with a porous HAp/Col composite. The gap in the coronal plane was a risk factor for pseudoarthrosis at the LIF segment.
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