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Yoshitaka Takahashi,Nobuyuki Shimizu,Kohei Suzuki 대한기계학회 2005 JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY Vol.19 No.1S
Accurate seismic analyses of large deformable moving structures are still unsolved problems In the field of earthquake engineering In order to analyze these problems, the nonlinear finite element method formulated by the absolute nodal coordinate approach is noticed Because, this formulation has several advantages over the standard procedures on mass matrix, elastic forces and damping forces In the case of large displacement problems But, It has not been fully studied to build frame structure models by using beam elements In the absolute nodal coordinate formulation In this paper, we propose the connecting method of the beam elements formulated by the absolute nodal coordinate The coordinate transformation matrix of this element is Introduced into the frame structure This beam element has the characteristic that the mass matrix and bending stiffiness matrix are constant even If m the case of large displacement problems, and this characteristic is being kept after the transformation In order to verify the proposed method, we show the numerical simulation results of frame structures for a vibration problem and a large displacement problem<br/>
Intraductal Lipid-Rich Carcinoma of the Breast with a Component of Glycogen-Rich Carcinoma
Yoshitaka Kurisu,Motomu Tsuji,Yuro Shibayama,Yuko Takahashi,Takehiro Nohara 한국유방암학회 2012 Journal of breast cancer Vol.15 No.1
We report a rare case of intraductal lipid-rich carcinoma of the breast with a component of glycogen-rich carcinoma. An impalpable tumor that was revealed by mammography and magnetic resonance imaging was excised. Histologic examination showed vacuolated neoplastic cells in the mammary ducts, and electron microscopy confirmed lipid droplets in the cytoplasm. The coexistence of glycogen-rich carcinoma was shown. Lipid-rich carcinoma that is coexistent with glycogen-rich carcinoma is rare, and most lipid-rich carcinomas are invasive. Intraductal lipid-rich carcinoma is difficult to detect without echography or mammography.
High-Performance Pipelined VLSI Architecture of the LMS Adaptive Filter
Kyo Takahashi,Shingo Sato,Yoshitaka Tsunekawa 대한전자공학회 2007 ITC-CSCC :International Technical Conference on Ci Vol.2007 No.7
This paper presents a high-performance pipelined VLSI architecture of the LMS adaptive filter derived by a cut-set retiming technique (CSRT). The architecture has a minimum output latency, high sampling rate, small hardware, and low power dissipation, simultaneously.
Stent-graft placement for treatment of massive hemobilia caused by porto-biliary fistula
Masao Takahashi,Yozo Sato,Kazuo Hara,Nozomi Okuno,Ikuo Dejima,Shinichi Murata,Takaaki Hasegawa,Shohei Chatani,Hiroaki Onaya,Yoshitaka Inaba 소화기인터벤션의학회 2019 International journal of gastrointestinal interven Vol.8 No.4
Proton beam therapy is a type of radiation therapy and a promising modality for cancer management because it involves few adverse effects and high therapeutic efficacy. However, there are reports of acute and late complications because of normal tissue damage. Hemobilia, known as bleeding from the biliary tree, is observed in various conditions, and it can also be of iatrogenic origin such as due to percutaneous hepatobiliary interventions. In most cases, it can be managed conservatively without significant hemorrhage. However, in a few cases with massive hemobilia, further intervention is necessary. We report the successful use of a stent-graft in the portal vein to treat massive hemobilia with porto-biliary fistula that was caused by previous proton beam therapy.
Stent-graft placement for treatment of massive hemobilia caused by porto-biliary fistula
Masao Takahashi,Yozo Sato,Kazuo Hara,Nozomi Okuno,Ikuo Dejima,Shinichi Murata,Takaaki Hasegawa,Shohei Chatani,Hiroaki Onaya,Yoshitaka Inaba 소화기인터벤션의학회 2019 Gastrointestinal Intervention Vol.8 No.4
Proton beam therapy is a type of radiation therapy and a promising modality for cancer management because it involves few adverse effects and high therapeutic efficacy. However, there are reports of acute and late complications because of normal tissue damage. Hemobilia, known as bleeding from the biliary tree, is observed in various conditions, and it can also be of iatrogenic origin such as due to percutaneous hepatobiliary interventions. In most cases, it can be managed conservatively without significant hemorrhage. However, in a few cases with massive hemobilia, further intervention is necessary. We report the successful use of a stent-graft in the portal vein to treat massive hemobilia with porto-biliary fistula that was caused by previous proton beam therapy.
( Eiki Nomura ),( Yoshitaka Kinouchi ),( Tooru Shimosegawa ),( Sho Takagi ),( Hisashi Shiga ),( Nobuya Obana ),( Katsuya Endo ),( Nobuo Ueki ),( Kenichi Negoro ),( Seichi Takahashi ) 대한소화기학회 2007 SIDDS Vol.9 No.-
Background/Aims: Cronkhite-Canada syndrome (CCS) is a rare nonhereditary disorder with gastrointestinal (GI) polyposis, associated with ectodermal changes. GI polyps are generally accepted to be nonneoplastic in nature. However, GI malignancy have been described in some CCS patients. Methods: Two cases of CCS associated with GI cancer and membranous glomerulonephritis (MGN) were examined about clinicopathological features. Results: 〔Case 1〕 A 71-year-old man had GI polyposis. The skin of his legs showed brown pigmentation and his fingernails and toenails were atrophic. He had proteinuria and the biopsied specimen of the kidney revealed MGN. We made a diagnosis of CCS associated with MGN. Treatment with methylprednisolone and cyclosporine ameliorated the symptoms and the GI polyposis Colonoscopy after the treatment showed the regression of the polyposis and the histological examination of the remnant polyp after endoscopic resection showed well differentiated adenocarcinoma. Twelve months after the resection, he achieved remission and no recurrence of the polyposis was found. 〔Case 2〕 A 58-year-old man was admitted our hospital for the examination of the progression of anemia. HE was diagnosed as MGN at 24 years old and was under medical treatment. He had poor nutrition, with the typical clinical features of CCS. He had also taste disturbance. Radiologic, endoseopic and histological examinations confirmed CCS polyposis in the stomach, small intestine and colon. He was treated with prednisolone, oral zinc and tranexamic acid and was improved of the symptoms. Six months after the diagnosis, follow-up upper GI scopy showed no change of the diffuse polyposis of the stomach, whereas the histological findings of the biopsied specimens from the lower body polyp revealed to be an adenocarcinoma. He was performed a total gastrectomy. Conclusions: Although the frequency of malignant transformation is considered to be low in CCS, it has definite malignant potential and a close follow-up examination is recommended.