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Shinsuke NISHIMURA,Kisa MATSUSHIMA,Kazuhiro NAKAHASHI 한국항공우주학회 2008 한국항공우주학회 학술발표회 논문집 Vol.- No.-
The compact scheme with a new method to detect the transition point is applied to low-Reynolds number (Re = 3.43 x 10?, 2.51 x 10?) over the NACA9324 airfoil. RANS simulations have difficultly to predict the stalling characteristics because the large separation and transition occur in flow at low-Reynolds number region, NACA9324 shows peculiar aerodynamic characteristics. Its stall type change from leading-edge stall to trailing-edge stall when the Reynolds number increase over 3.43 x 10?. In preliminary study, fully laminar computations using conventional 3<SUP>rd</SUP>-order TVD and 2<SUP>nd</SUP>-order central differencing could not predict stalling characteristics of the NACA9324. Because that computations couldn’t resolve a laminar bubble and a transition from laminar to turbulent flow. Thus, compact high-order scheme with the new transition method is applied to the flow around the NACA9324 airfoil. As a current result, the compact scheme succeeds in predicting the trailing-edge stalling aerodynamic characteristics. The new transition method is being examined.
( Shinsuke Otagiri ),( Takehiko Katsurada ),( Kensuke Sakurai ),( Junichi Sugita ),( Naoya Sakamoto ) 대한장연구학회 2022 Intestinal Research Vol.20 No.2
X-linked inhibitor of apoptosis (XIAP) deficiency is a rare primary immunodeficiency and gastrointestinal (GI) lesions in XIAP deficiency are similar to Crohn’s disease. For patients with Crohn’s disease, endoscopic balloon dilation (EBD) is known to be a standard procedure for intestinal strictures including upper GI tract. However, there are no articles which mention the efficacy of EBDs for the strictures in upper GI tract in patients with XIAP deficiency. Herein, we describe an 18-year-old male with XIAP deficiency in whom EBDs for the rectum, ileocecal valve (ICV), and duodenum were performed. Before hematopoietic stem cell transplantation (HSCT), GI endoscopy revealed strictures of the rectum, ICV and duodenum with active ulcers. Although these ulcers healed after HSCT, the strictures progressed. Therefore, we performed EBDs for the strictures of the rectum, ICV, and duodenum. In contrast studies, we did not find any other strictures in the small intestine. Throughout the patient’s clinical course, no complications of EBD occurred. He started eating after EBDs, but abdominal symptoms did not relapse without any dietary restrictions. Our case suggests that EBD could be an effective and safe procedure for intestinal strictures including upper GI tract after HSCT in patients with XIAP deficiency. (Intest Res 2022;20:274-277)
Numerical simulation of ion extraction from a negative hydrogen ion source
shinsuke Nishigaito,Alexander Mendenilla,Hidenori Takahashi,Motoi Wada,Toshiro Kasuya 한국물리학회 2006 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.49 No.III
A simulation code is developed to calculate trajectories of negative hydrogen ions (H.) extracted from a negative ion source equipped with a magnetic filter. The field due to a magnetic filter bends trajectories of electrons extracted with H. causing the formation of an electrostatic field produced by the space charge to have a component perpendicular to the beam extraction axis. By Assuming the intensity distribution of the magnetic filter field to be approximated by a Gauss function of a proper width, trajectories of electrons and H. are computed by the developed code. Calculated trajectories of electrons and H. in the beam extraction regions are shown and discussed together with their effect upon the final H. beam transport.
( Shinsuke Mikami ),( Takafumi Sugihiro ),( Satoshi Mouri ),( Yusuke Ueda ),( Hitoshi Susawa ),( Kengo Kobayashi ),( Haruki Tanaka ),( Kouichi Tanaka ),( Yukihito Higashi ),( Yasuki Kihara ) 대한내과학회 2014 대한내과학회 추계학술대회 Vol.2014 No.1
Background: Foot ulcers are costly complication among diabetes patients. These patients have an increased risk of amputation and increased mortality rate. Early recognition of the high-risk foot and sufficient care will save legs and improve patients` quality of life. Figures of incidence of foot ulcers varies and there are only limited information in relation the change of incidence over time. The aim of this study was to estimate 5-year risk for diabetic foot ulcer (DFU), lower extremity amputation (LEA) and all cause of death. Methods: Retrospective cohort study including all subjects with diabetes enrolled in our diabetic outpatient clinic from beginning 2008 until middle 2014. Data were collected from clinical records. Results: 528 subjects with mean age of 61.3 (±13.8), 57.4% were male. The mean of HbA1c in diabetic patients at baseline were 8.1% +/- 1.9%. Cumulative incidence was 1.3% for DFU, 0.18% for LEA and 4.7% for all-cause of death. The prevalence of cardiovascular and cerebrovascular conditions, pneumonia were 2.3%, 1.9%, 2.3%, respectively. Cause of deaths was cancer (64%), pneumonia (20%), cardiovascular death (4%). Conclusions: Several factors may explain the incidence in diabetes-related LEAs. Diabetes prevention strategies and controlling risk factors are important in people with type 1 and 2 diabetes.