Search Results - "Kamiya, Junichiro"
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Endoscopic selective biliary stenting and reintervention using metal stents with a slim delivery system in a patient with complexly altered digestive anatomy
Published in Journal of hepato-biliary-pancreatic sciences (01-07-2022)“…Nishikawa and colleagues describe a case of endoscopic multiple stenting for malignant biliary stenosis in a patient with complexly altered digestive anatomy…”
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Evaluation of Titanium Vacuum Chamber as Getter Pump
Published in E-journal of surface science and nanotechnology (07-05-2022)“…Methods for removing the surface oxide film have been investigated to make a titanium vacuum chamber itself act as a getter pump. The build-up test of the…”
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Evaluation of Vacuum Firing Effect on Stainless Steel from Vacuum and Surface Point of View
Published in E-journal of surface science and nanotechnology (10-12-2022)“…Vacuum firing, which is a heat treatment at high temperature in a high vacuum furnace, is known as the method for the outgassing reduction of the vacuum…”
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SRPES and XPS Analysis of Activation and Deterioration Processes for Ti-Zr-V NEG Coating
Published in E-journal of surface science and nanotechnology (31-08-2024)“…The activation and deterioration mechanisms of the Ti-Zr-V non-evaporable getter (NEG) coating have been investigated. Operando analysis of the surface…”
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Design and actual performance of J-PARC 3 GeV rapid cycling synchrotron for high-intensity operation
Published in Journal of nuclear science and technology (02-09-2022)“…In the Japan Proton Accelerator Research Complex, the purpose of the 3 GeV rapid cycling synchrotron (RCS) is to accelerate a 1 MW, high-intensity proton beam…”
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In situ baking method for degassing of a kicker magnet in accelerator beam line
Published in Journal of vacuum science & technology. A, Vacuum, surfaces, and films (01-03-2016)“…In this study, the authors propose a new in situ degassing method by which only kicker magnets in the accelerator beam line are baked out without raising the…”
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High-intensity beam profile measurement using a gas sheet monitor by beam induced fluorescence detection
Published in Physical review. Accelerators and beams (01-04-2021)“…A transverse beam profile monitor that visualizes a two-dimensional beam-induced fluorescent image was developed. The monitor employs a sheet-shaped gas flow…”
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Investigation of Niobium Surface Roughness and Hydrogen Content with Different Polishing Conditions for Performance Recovery of Superconducting QWRs in JAEA Tokai-Tandem Accelerator
Published in E-journal of surface science and nanotechnology (18-05-2023)“…The effect of the different polishing conditions for niobium has been investigated as the basic data for polishing the superconducting quarter-wave resonators…”
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Improved vacuum system for high-power proton beam operation of the rapid cycling synchrotron
Published in Physical review. Accelerators and beams (01-08-2021)“…The vacuum system in the rapid-cycling synchrotron of the Japan Proton Accelerator Research Complex has been operated for more than 10 years. It becomes…”
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Titanium alloy as a potential low radioactivation vacuum material
Published in Journal of vacuum science & technology. A, Vacuum, surfaces, and films (01-05-2015)“…For the vacuum systems of high-intensity beam accelerators, low radioactivation materials with good vacuum characteristics and high mechanical strength are…”
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Experimental study of (p, 2p) reactions at 392 MeV on 12C, 16O, 40Ca and 208Pb nuclei leading to low-lying states of residual nuclei
Published in Progress of theoretical and experimental physics (01-09-2020)“…Abstract We have measured the differential cross-sections and analyzing powers for ($p,2p$) reactions at an incident energy of 392 MeV on $^{12}$C, $^{16}$O,…”
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Performance of extraction kicker magnet in a rapid cycling synchrotron
Published in Physical review special topics. PRST-AB. Accelerators and beams (01-07-2009)“…Installation of the kicker magnets in the extraction section of the rapid cycling synchrotron in the J-PARC facility has been completed. They succeeded in…”
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A Case of Small Cell Carcinoma of the Esophagus with Complete Response to Chemoradiotherapy in an Elderly Patient
Published in Gan to kagaku ryoho (01-12-2019)“…Small cell carcinoma of the esophagus is a rare malignancy with a perceived poor prognosis. We report a case of long-term survival using chemoradiotherapy. An…”
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A Case of Advanced Gastric Cancer Responding to Neoadjuvant Chemotherapy with Docetaxel, Cisplatin, and 5-Fluorouracil, Leading to a Pathological Complete Response
Published in Gan to kagaku ryoho (01-11-2017)“…We report a 72-year-old woman who was initially diagnosed with locally advanced gastric cancer with involvement of the esophagus and pancreas. She received 3…”
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Estimation of secondary electron effect in the J-PARC rapid cycling synchrotron after first study
Published in Applied surface science (30-11-2009)“…The J-PARC 3 GeV rapid-cycling synchrotron (RCS) is required to provide 1 MW pulsed protons to the spallation neutron target and the 50 GeV main ring. Since…”
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Successful Surgical Treatment for Hepatocellular Carcinoma with Portal Vein Tumor Thrombus after Favorable Response to Irradiation and Transcatheter Arterial Chemoembolization
Published in Gan to kagaku ryoho (01-11-2015)“…Here, we describe the surgical treatment of a patient with hepatocellular carcinoma(HCC)with portal vein tumor thrombus (PVTT) after irradiation and…”
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Simultaneous Resection of Sigmoid Colon Cancer and Synchronous Liver Metastasis by Laparoscopic Surgery
Published in Gan to kagaku ryoho (01-11-2015)“…We report the case of a patient with sigmoid colon cancer with synchronous liver metastasis who underwent simultaneous sigmoid colectomy and partial…”
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A Case of a Metastatic Liver Tumor from a Thymic Carcinoma Detected During a Cesarean Section
Published in Gan to kagaku ryoho (01-11-2015)“…A 40-year-old pregnant woman who had previously been diagnosed with uterine myoma underwent cesarean section. During the operation, a tumor thought to be…”
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Large-aperture alumina ceramics beam pipes with titanium bellows for the rapid cycling synchrotron at Japan Proton Accelerator Research Complex
Published in Journal of vacuum science & technology. A, Vacuum, surfaces, and films (01-05-2018)“…The 3-GeV rapid-cycling synchrotron at the Japan Proton Accelerator Research Complex aims to generate proton beams whose power output is among the highest in…”
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Measurement scheme of kicker impedances via beam-induced voltages of coaxial cables
Published in Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment (11-06-2013)“…A new theory, which satisfies the causality condition, is developed to describe impedances of kicker magnets with coaxial cables. The theoretical results well…”
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