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Journal of Natural Gas Chemistry 2003年第4期12卷 219-227页

作者： Takashi Ogawa Norio Inoue Tutomu Shikada yotaro ohno DME Development Co LtdShoro-koku ShiranukachHokkaido 088-0563 JapanDME Development CoLtdShoro-koku ShiranukachHokkaido 088-0563 JapanDME Development CoLtdShoro-koku ShiranukachHokkaido 088-0563 JapanDME Development CoLtdShoro-koku ShiranukachHokkaido 088-0563 Japan

Dimethyl ether (DME) is a clean and economical alternative fuel which can beproduced from natural gas through synthesis gas. The properties of DME are very similar to those ofLP gas. DME can be used for various fields as a fuel such as power generation, transportation, homeheating and cooking, etc. It contains no sulfur or nitrogen. It is not corrosive to any metal andnot harmful to human body. An innovative process of direct synthesis of DME from synthesis gas hasbeen developed. Newly developed catalyst in a slurry phase reactor gave a high conversion and highselectivity of DME production. One and half year pilot scale plant (5 tons per day) testing, whichwas supported by METI, had successfully finished with about 400 tons DME production.

关键词： dimethyl ether DME slurry reactor natural gas syn-gas coal clean fuel diesel engine

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Current status of diagnosis and therapy for intraductal papillary neoplasm of the bile duct

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World Journal of Gastroenterology 2021年第15期27卷 1569-1577页

作者： Yuji Sakai Masayuki Ohtsuka Harutoshi Sugiyama Rintaro Mikata Shin Yasui Izumi ohno yotaro Iino Jun Kato Toshio Tsuyuguchi Naoya Kato Department of Gastroenterology and Nephrology Graduate School of MedicineChiba UniversityChiba 260-8670Japan Department of General Surgery Graduate School of MedicineChiba UniversityChiba 260-8670Japan

Bile duct epithelial tumours showing papillary neoplasm in the bile duct lumen are present in the intrahepatic and extrahepatic bile *** images of these tumours are distinctive and diverse,including histological images with a low to high grade dysplasia,infiltrating and noninfiltrating characteristics,excessive mucus production,and similarity to intraductal papillary mucinous neoplasm(IPMN)of the *** World Health Organization Classification of Tumours of the Digestive System in 2010 named these features,intraductal papillary neoplasm of the bile duct(IPNB),as precancerous lesion of biliary *** is currently classified into type 1 that is similar to IPMN,and type 2 that is not similar to *** of IPNB spreads superficially,and diagnosis with cholangioscopy is considered mandatory to identify accurate localization and *** of IPNB is said to be better than normal bile duct cancer.

关键词： Intraductal papillary neoplasm of the bile duct Intraductal papillary mucinous neoplasm of the pancreas Peroral cholangioscopy Cholangioscopy

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