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Synthesis of CaO-SiO<sub>2</sub>Compounds Using Materials Extracted from Industrial Wastes

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Open Journal of Inorganic Non 2015年第1期5卷 1-10页

作者： Nobuaki Yamaguchi Yoshiko Masuda Yoshishige Yamada hideaki narusawa Cho Han-Cheol Yukimichi Tamaki Takashi Miyazaki Department of Conservative Dentistry Division of Biomaterials & Engineering Showa University School of Dentistry Tokyo Japan Department of Conservative Dentistry Division of Endodontology Showa University School of Dentistry Tokyo Japan Department of Dental Materials Science Asahi University School of Dentistry Gifu Japan

Mineral trioxide aggregate (MTA) cement is an attractive material in endodontic dentistry. The purpose of this study was to produce calcium silicate, which is a major component of MTA, from waste materials. A dental alginate impression gel and used chalks were selected and mixed in a suitable ratio (Code: EXP). As a control, CaCO3 and a commercial diatomite were used (Code: CON). Each powder was heated to 850。C and 1000。C, and then kneaded with water. TG-DTA, compressive tests, SEM observations, elemental mapping analyses, and XRD analyses were performed. TG-DTA indicated that weight reduction of CaCO3 started at 600。C, and it completely decomposed on heating at 850。C. The strength was affected by the temperature. After heating, CaCO3 was transformed into CaO and/or Ca2SiO4, and Ca(OH)2 was formed by mixing with water. There were no differences between EXP and CON. These data suggested that recycled wastes might be promising MTA sources.

关键词： Recycling Calcium Silicate Diatomite Alginate Impression Material Calcium Hydroxide

Diamond Rib: A Mechanical Design Method for Improving the Stiffness of a Structure

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Engineering（科研） 2016年第6期8卷 308-319页

作者： Kazunori Shinohara Masanobu Mizoguchi Shintatsu Suzuki Yasutaka narusawa Department of Integrated Mechanical Engineering Daido University Nagoya Japan Collaborative Research Center Daido University Nagoya Japan

It is necessary to decrease the weight of space satellites, while maintaining their stiffness. To achieve this weight reduction, many structures, such as honeycomb and isogrid, have been reported in the literature. In this paper, the diamond rib method, a mechanical design method for improving the stiffness of structures, is introduced. By applying this method to a small space satellite, we propose a new structure called the “Diamond Rib Structure”. This structure significantly improves the ability to withstand the vibrational disturbances in a rocket fairing.

关键词： Space Satellite Finite Element Method Optimal Design Natural Frequency Natural Mode Diamond Rib Method Stiffness

Si (100)-Au INTERFACE STUDY BY MeV ION TRANSMISSION CHANNELING

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Science China Mathematics 1987年第2期 198-204页

作者：王克明,T. narusawa,W. M. GIBSON Department of Physics Shandong University Jinan Department of Physics State University of New York USA Department of Physics State University of New York USA

We have used the MeV He-ion transmission channeling technique to study the initial stage of Si (100)-Au interfacial reaction. The strong flux peak of the transmitted MeV He-ions at the exit surface and the absence of Si shadowing by the Au-overlayer provides us the possibility to better selection of lattice sites for Au-atoms. We show clearly that low coverages (up to 1.5 M. L.) of Au over the Si (100) 2×1 surface display registry with the atomic structure of the substrate. The dip of the angular scan curve of Au gets shallower with the increasing Au coverage. At 10 M. L. Au coverage no dip has been found in the angular scan, which indicates the formation of the amorphous gold silicide at this stage.

关键词： Au INTERFACE STUDY BY MeV ION TRANSMISSION CHANNELING Si

Gallbladder Burkitt's lymphoma mimicking gallbladder cancer:A case report

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World Journal of Gastroenterology 2022年第6期28卷 675-682页

作者： Kiyotaka Hosoda Akira Shimizu Koji Kubota Tsuyoshi Notake Hikaru Hayashi Koya Yasukawa Kentaro Umemura Atsushi Kamachi Takamune Goto Hidenori Tomida Shiori Yamazaki Yuri narusawa Naoko Asano Takeshi Uehara Yuji Soejima Division of Gastroenterological Hepato-Biliary-PancreaticTransplantation and Pediatric SurgeryDepartment of SurgeryShinshu University School of MedicineMatsumoto 390-8621Japan Department of Laboratory Medicine Shinshu University School of MedicineMatsumoto 390-8621Japan

BACKGROUND Malignant lymphoma is a rare form of gallbladder *** of these malignancies are diffuse large B-cell lymphomas or mucosa-associated lymphoid tissue-type lymphomas;however,Burkitt’s lymphoma of the gallbladder is extremely rare,and only two previous reports are available in the ***,we report a rare case of Burkitt’s lymphoma of the gallbladder mimicking gallbladder *** SUMMARY An 83-year-old man with no abdominal complaints was found to have a gallbladder tumor and periportal lymph node enlargement on computed tomography(CT)performed for hypertension *** laboratory data revealed slightly elevated serum levels of carcinoembryonic antigen and soluble interleukin 2 *** examinations revealed two irregular and contrastenhanced masses extending into the gallbladder lumen,but these did not infiltrate the ***,a periportal lymph node had enlarged to 30 *** on these findings,we diagnosed the patient as having gallbladder adenocarcinoma with lymph node metastasis,which was treated using bile duct resection with gallbladder bed resection and periportal lymph node ***,the patient was finally diagnosed as having Burkitt’s *** the surgical margin was pathologically negative,recurrence was noted at the hepatic radical margin and superior pancreaticoduodenal lymph nodes on positron emission tomography/CT soon after ***,he was referred to a hematologist and started receiving treatment with reduced-dose cyclophosphamide,doxorubicin,vincristine,and *** Burkitt’s lymphoma can occur in the *** can be useful in cases with findings suggestive of gallbladder malignant lymphoma.

关键词： Gallbladder Malignant lymphoma Burkitt’s lymphoma Gallbladder cancer Lymphadenopathy Case report

用MeV离子透射沟道来研究Si(100)-Au界面

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中国科学:数学 1985年第7期 596-601页

作者：王克明,T. narusawa,W. M. Gibson 山东大学物理系美国奥尔贝尼纽约州立大学物理系美国奥尔贝尼纽约州立大学物理系济南 1980-1982年访问美国奥尔贝尼纽约州立大学日本光电子学联合研究实验室

本文描述了用能量为MeV的He离子透射沟道技术来研究Si(100)-Au界面反应初始阶段的问题。由于透射的MeV He离子在样品出口面处有很强的流峰,也由于不存在Au表面层对Si原子的遮蔽问题,因而有可能更好地确定Au原子的晶格位置。实验表明,在A... 详细信息

本文描述了用能量为MeV的He离子透射沟道技术来研究Si(100)-Au界面反应初始阶段的问题。由于透射的MeV He离子在样品出口面处有很强的流峰,也由于不存在Au表面层对Si原子的遮蔽问题,因而有可能更好地确定Au原子的晶格位置。实验表明,在Au原子低覆盖时,至少直至1.5原子层时,淀积在Si(100)2×1表面的Au原子是按衬底的原子结构来堆积的。随着Au的覆盖的增加,Au的角扫描曲线的谷而变浅。当Au的覆盖层达到10原子层时,在角扫描中沟道谷消失,这表明,在这个阶段形成了非晶形的硅化金。

关键词：沟道 Au MeV 原子层电子衍射表面层流体层离子 Si

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INDES办公楼

城市环境设计 2010年第1期 146-149页

作者： Frido van Nieuwamerongen Gerd Streng Michiel Pouderoyen Anne Wehmer Katsura narusawa Maarten Gipon Arconiko建筑事务所

Twente科技园毗邻火车站,位于Twente大学和足球场之间。园区中的大部分建筑阴沉单调,最初创造一个极富吸引力地区的计划没有付诸实践。Indes是一家以高端科技产品为主的工业设计公司,公司期望建造一座灵巧、友好而极具辨识度的建筑。

关键词：办公楼 INDES 足球场辨识度