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Application of the Solvothermal Process in the Synthesis of High-performance Ag/γ-Al_2O_3 Catalysts

过程工程学报 2006年第4期6卷 633-638页

作者：唐清李锐星殷澍 Shingo Goto daisuke nagai Tsugio Sato Institute of Process Engineering Chinese Academy of Sciences Institute of Multidisciplinary Research for Advanced Materials Tohoku UniversitySendai 980-8577Japan

Ag/γ-Al2O3 is a kind of promising catalyst with the relatively lower cost compared with those using noble metals,good resistance against catalytic poisoning and excellent behaviour for NOx *** the present study,Ag/γ-Al2O3 catalysts were synthesized by the solvothermal process and characterized by XRD,TG?DTA,TEM,UV?Vis and FT?*** was found that high-performance Ag/γ-Al2O3 catalysts could be synthesized by properly selecting starting materials,controlling the composition of solvent and other reaction *** microstructure evolution of the catalysts was also discussed.

关键词： Ag/γ-Al2O3 solvothermal process catalyst microstructure

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Wind Tunnel Test for Videogrammetric Deformation Measurement of UAV for Mars Airplane Balloon Experiment-1 (MABE-1)

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Journal of Flow Control, Measurement & Visualization 2019年第2期7卷 87-100页

作者： Koji Fujita Akira Oyama daisuke Kubo Masahiro Kanazaki Hiroki nagai Institute of Fluid Science Tohoku University Sendai Japan Institute of Space and Astronautical Science Japan Aerospace Exploration Agency Sagamihara Japan Japan Aerospace Exploration Agency Mitaka Japan Tokyo Metropolitan University Hino Japan

This paper reports the results of the aerodynamic deformation measurements of the meter-scale, entire shape, actual UAV in the wind tunnel using a video grammetry technique. The measured airplane was the airplane for Mars exploration being developed by Japan Aerospace Exploration Agency (JAXA) and Japanese universities. Its main wing span length was 2.4 m. The video grammetry measurement was performed using VICON’s system. Retroactive markers and stickers were put on the airplane. JAXA’s 6.5 m × 5.5 m Low-Speed Wind Tunnel was used. The airplane was mounted on the strut support with pitch-free or pitch-locked conditions. The deformations of the main wing bending, the main wing twisting, the tail boom bending, and the elevator deflection angle change were revealed quantitatively. The bending stiffness of a main wing spar that was designed as a safety factor of 2.8 at load factor of 5 was sufficient. The main wing spar was located around a center of pressure of an airfoil and it showed enough stiffness for twisting at nominal condition. The effects of the main wing bending and twisting, and the tail boom bending on the aerodynamic performance were estimated but they were in an acceptable range from the standpoint of the controllability of the aerodynamic performance using control surfaces. Even though the servo motor was located near the elevator and the linkage between the servo motor and the elevator was short, the measured elevator deflection angle was at most 4% smaller than the angle at no-wind condition. The obtained results and presented method are useful for control, flight data analysis, and design of lightweight airplanes.

关键词： Wind Tunnel UAV Deformation Video Grammetry Mars Exploration

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Laparoscopic surgery for small-bowel obstruction caused by Meckel's diverticulum

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World Journal of Gastrointestinal Surgery 2016年第2期8卷 169-172页

作者： Takatsugu Matsumoto Motoki nagai daisuke Koike Yukihiro Nomura Nobutaka Tanaka Department of Gastroenterological Surgery Dokkyo Medical University Department of Surgery Asahi General Hospital

A 26-year-old woman was referred to our hospital because of abdominal distention and vomiting. Contrastenhanced computed tomography showed a blind loop of the bowel extending to near the uterus and a fibrotic band connecting the mesentery to the top of the bowel,suggestive of Meckel's diverticulum(MD) and a mesodiverticular band(MDB). After intestinal decompression,elective laparoscopic surgery was carried out. Using three 5-mm ports,MD was dissected from the surrounding adhesion and MDB was divided intracorporeally. And subsequent Meckel's diverticulectomy was performed. The presence of heterotopic gastric mucosa was confirmed histologically. The patient had an uneventful postoperative course and was discharged 5 d after the operation. She has remained healthy and symptom-free during 4 years of follow-up. This was considered to be an unusual case of preoperatively diagnosed and laparoscopically treated small-bowel obstruction due to MD in a young adult woman.

关键词： Surgery Human Meckel’s diverticulum Small-bowel obstruction Laparoscopic surgery

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Overexpression of c-met in the early stage of pancreatic carcinogenesis; altered expression is not sufficient for progression from chronic pancreatitis to pancreatic cancer

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World Journal of Gastroenterology 2006年第24期12卷 3878-3882页

作者： Kenoki Ohuchida Kazuhiro Mizumoto Nami Ishikawa Yasuhiro Ogura daisuke Yamada Takuya Egami Hayato Fujita Seiji Ohashi Eishi nagai Masao Tanaka Department of Surgery and Oncology Graduate School of Medical Sciences Kyushu UniversityFukuokaJapan

AIM： To investigate c-met expression during early pancreatic carcinogenesis. METHODS： We used 46 bulk tissues and 36 microdissected samples, including normal pancreas, chronic pancreatitis, and pancreatic cancer, for quantitative realtime reverse transcription-polymerase chain reaction. RESULTS： In bulk tissue analyses, pancreatic cancer tissues expressed significantly higher levels of c-met than did chronic pancreatitis and normal pancreas tissues. c-met levels did not differ between chronic pancreatitis and normal pancreas tissues. In microdissection-based analyses, c-met was expressed at higher levels in microclissected pancreatic cancer cells and pancreatitisaffected epithelial cells than in normal ductal epithelial cells （both, P 〈 0.01）. Interestingly, pancreatitis-affected epithelial cells expressed levels of c-met similar to those of pancreatic cancer cells. CONCLUSION： Overexpression of c-met occurs during the early stage of pancreatic carcinogenesis, and a single alteration of c-met expression is not sufficient for progression of chronic pancreatitis-affected epithelial cells to pancreatic cancer cells.

关键词： c-met', Pancreatic cancer Chronic pancreatitis Pancreatic carcinogenesis

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