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Verification of Autonomous Decentralized Control UPS system using FPGA based Hardware Controller
Tsuyoshi Saito,Nobuaki Doi,Tomoki Yokoyama 전력전자학회 2007 ICPE(ISPE)논문집 Vol.- No.-
Design concept of FPGA based hardware controller with HW/SW codesign for autonomous decentralized control UPS system is proposed. Progress of FPGA technology makes it possible to include the software macro CPU core into the FPGA chip, a high flexibility can be realized for the construction of the control processor in power electronics application. In the proposed method, all the control system is implemented in one FPGA chip. Complicated calculations are assigned to hardware calculation logic, and the parallel processing circuit makes it possible to realize minimizing the calculation time. Also Nios II CPU core is implemented in the same FPGA chip, and the software development can be applied for non-time critical calculations.The advantages of the proposed system is discussed through simulations and experiments.
Chloroplastic NAD(P)H Dehydrogenase Complex and Cyclic Electron Transport around Photosystem I
Tsuyoshi Endo,Satoshi Ishida,Noriko Ishikawa,Fumihiko Sato 한국분자세포생물학회 2008 Molecules and cells Vol.25 No.2
Recent molecular genetics studies have revealed that cyclic electron transport around photosystem I is essential for normal photosynthesis and growth of plants. Chloroplastic NAD(P)H dehydorgenase (NDH) complex, a homologue of the complex I in respiratory electron transport, is involved in one of two cyclic pathways. Recent studies on the function and structure of the NDH complex are reviewed
( Tsuyoshi Hamada ),( Hiroyuki Isayama ),( Yousuke Nakai ),( Osamu Togawa ),( Naminatsu Takahara ),( Rie Uchino ),( Suguru Mizuno ),( Dai Mohri ),( Hiroshi Yagioka ),( Hirofumi Kogure ),( Saburo Matsu 대한소화기학회 2017 Gut and Liver Vol.11 No.1
Background/Aims: In distal malignant biliary obstruction, an antireflux metal stent (ARMS) with a funnel-shaped valve is effective as a reintervention for metal stent occlusion caused by reflux. This study sought to evaluate the feasibility of this ARMS as a first-line metal stent. Methods: Patients with nonresectable distal malignant biliary obstruction were identified between April and December 2014 at three Japanese tertiary centers. We retrospectively evaluated recurrent biliary obstruction and adverse events after ARMS placement. Results: In total, 20 consecutive patients were included. The most common cause of biliary obstruction was pancreatic cancer (75%). Overall, recurrent biliary obstruction was observed in seven patients (35%), with a median time to recurrent biliary obstruction of 246 days (range, 11 to 246 days). Stent occlusion occurred in five patients (25%), the causes of which were sludge and food impaction in three and two patients, respectively. Stent migration occurred in two patients (10%). The rate of adverse events associated with ARMS was 25%: pancreatitis occurred in three patients, cholecystitis in one and liver abscess in one. No patients experienced nonocclusion cholangitis. Conclusions: The ARMS as a first-line biliary drainage procedure was feasible. Because the ARMS did not fully prevent stent dysfunction due to reflux, further investigation is warranted. (Gut Liver 2017;11:142-148)