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AEGIS: AN ADVANCED LATTICE PHYSICS CODE FOR LIGHT WATER REACTOR ANALYSES
Yamamoto, Akio,Endo, Tomohiro,Tabuchi, Masato,Sugimura, Naoki,Ushio, Tadashi,Mori, Masaaki,Tatsumi, Masahiro,Ohoka, Yasunori Korean Nuclear Society 2010 Nuclear Engineering and Technology Vol.42 No.5
AEGIS is a lattice physics code incorporating the latest advances in lattice physics computation, innovative calculation models and efficient numerical algorithms and is mainly used for light water reactor analyses. Though the primary objective of the AEGIS code is the preparation of a cross section set for SCOPE2 that is a three-dimensional pin-by-pin core analysis code, the AEGIS code can handle not only a fuel assembly but also multi-assemblies and a whole core geometry in two-dimensional geometry. The present paper summarizes the major calculation models and part of the verification/validation efforts related to the AEGIS code.
Naoki Yoshida,Hisashi Yamamoto,Tomoaki Akiba,Koji Shingyochi,Xiao Xiao 대한산업공학회 2015 대한산업공학회 추계학술대회논문집 Vol.2015 No.11
In the multi-state consecutive-k-out-of-n:F system, both the components and the system are allowed to be in M + 1 possible state. One of the most important problems in the multi-state consecutive-k-out-of-n:F system is the optimal arrangement problem wherein the solution is obtained by the arrangement of components with maximum expectation of system states. In general, the optimal arrangements depend on the values of component state probabilities. It is known, however, that for some cases, optimal arrangements do not depend on the values of component state probabilities but on the magnitude relationships of component state probabilities. In this paper, we investigate characteristics of optimal arrangements in multi-state consecutive-k-out-of-n:F systems. We propose characteristics of invariable optimal arrangement on some conditions.
( Naoki Minami ),( Minoru Matsuura ),( Yorimitsu Koshikawa ),( Satoshi Yamada ),( Yusuke Honzawa ),( Shuji Yamamoto ),( Hiroshi Nakase ) 대한장연구학회 2017 Intestinal Research Vol.15 No.1
Background/Aims: Our physicians work to expand the possibilities to treat female patients with inflammatory bowel disease (IBD) who wish to become pregnant. Although many drugs, including 5-aminosalicylate (5-ASA), corticosteroids, immunomodulators, and biologics, are used safely during pregnancy, few reports have described the therapeutic regimen throughout pregnancy and the management of patients who relapse during pregnancy precisely. The aim of this study was to assess the management of patients with IBD during pregnancy. Methods: We identified 19 patients (five with Crohn`s disease and 14 with ulcerative colitis [UC]) who became pregnant with a total of 23 pregnancies between May 2005 and May 2015 by reviewing the medical records of Kyoto University Hospital. The following data were collected: the maternal variables, the IBD treatment type, the disease activity, the pregnancy outcome, and the mode of delivery. Results: Among the 19 patients, 18 had become pregnant after being diagnosed with IBD, while one had developed UC newly after pregnancy. Throughout the gestation, all patients were treated with probiotics, 5-ASA, prednisolone, cytapheresis, or infliximab. The relapse rate during pregnancy was 21.7% (5/23 cases). The five patients who experienced a relapse were able to pursue their pregnancy after intensification of their treatments. There were no adverse fetal or neonatal problems, except in one case that required an emergency Caesarean section because of placental dysfunction and in which a very low-birth-weight infant was born preterm. Conclusions: Our present data confirmed that even if the disease flares up during pregnancy, good pregnancy outcomes can be achieved with an optimal intensification of the patient`s treatment. (Intest Res 2017;15:90-96)
Naoki Ohkura,Riyo Morimoto-Kamata,Katsutaka Oishi,Sayaka Higo-Yamamoto,Aya Fujinami,Ken-ichi Inoue,Mitsuhiro Ohta 한국식품영양과학회 2023 Journal of medicinal food Vol.26 No.11
Angelica keiskei Koidzumi (Ashitaba) is a traditional folk medicine and health supplement in Japan. Ashitabayellow stem exudate (AYE) contains abundant chalcones and thus has the potential to treat and prevent many pathologicalstates such as cancer, inflammation, obesity, diabetics, thrombosis, and hypertension. Levels of plasminogen activator inhibitor1 (PAI-1), a key regulator of the fibrinolytic system, increase with age in mouse plasma. Therefore, we aimed todetermine the effects of AYE on plasma thrombotic parameters in aging mice. Long-term (52 weeks) AYE supplementationsignificantly decreased age-induced increases of PAI-1 in mouse plasma. Supplementation with AYE decreased levels of theacute-phase and fibrinolytic protein plasma plasminogen, and significantly decreased those of tumor necrosis factor a. Theseresults suggested that continuous intake of AYE throughout life decreases age-induced systemic inflammation and preventsthrombotic tendencies without affecting body weight gain in aged mice. Our findings showed that supplementing diets withAYE might help to prevent thrombotic diseases in elderly individuals.
AEGIS: AN ADVANCED LATTICE PHYSICS CODE FOR LIGHTWATER REACTOR ANALYSES
AKIO YAMAMOTO,TOMOHIRO ENDO,MASATO TABUCHI,NAOKI SUGIMURA,TADASHI USHIO,MASAAKI MORI,MASAHIRO TATSUMI,YASUNORI OHOKA 한국원자력학회 2010 Nuclear Engineering and Technology Vol.42 No.5
AEGIS is a lattice physics code incorporating the latest advances in lattice physics computation, innovative calculationmodels and efficient numerical algorithms and is mainly used for light water reactor analyses. Though the primary objectiveof the AEGIS code is the preparation of a cross section set for SCOPE2 that is a three-dimensional pin-by-pin core analysiscode, the AEGIS code can handle not only a fuel assembly but also multi-assemblies and a whole core geometry in two-dimensional geometry. The present paper summarizes the major calculation models and part of the verification/validationefforts related to the AEGIS code.
Study on Evaluation of Coppice Landscape Depend on Healthiness of Plants
Satoshi Yamamoto,Yue Shin,Naoki Takeda Korean Institute of Landscape Architecture 2004 Journal of the Korean institute of landscape archi Vol.2 No.-
It is increasing scenery created as a result of pine wilt disease. The purpose of this study is to investigate the local resident's awareness against the scenery caused by pine wilt disease in their neighboring area, through the questionnaire investigation. The result showed that more than $40\%$ of the residents are not aware of such scenery in their local area, and about 30% of the residents did not know that those trees were dying. More than $40\%$ of the people do not know of the pine wilt disease as a general argument. Another question showed that the recognition of such scenery depends on the distance of the viewer. General residents don't worry about such scenery in the far distance in fact some of them think those are colored leaves. However, the nearer they see the trees, the higher they have negative feeling against it.