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Boosting high-performance in Zr-rich side protonic solid oxide electrolysis cells by optimizing functional interlayer

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Green Energy & Environment 2025年第1期10卷 150-160页

作者： Chunmei Tang Ning Wang Sho Kitano hiroki Habazaki Yoshitaka Aoki Siyu Ye Huangpu Hydrogen Energy Innovation Center School of Chemistry and Chemical EngineeringGuangzhou UniversityNo.230 Wai Huan Xi RoadGuangzhou510006China Graduate School of Chemical Sciences and Engineering Hokkaido UniversityN13W8Kita-kuSapporo060-8628Japan Faculty of Engineering Hokkaido UniversityN13W8Kita-kuSapporo060-8628Japan

Protonic solid oxide electrolysis cells(P-SOECs)are a promising technology for water electrolysis to produce green ***,there are still challenges related key materials and anode/electrolyte interface.P-SOECs with Zr-rich electrolyte,called Zr-rich side P-SOECs,possess high thermodynamically stability under high steam concentrations but the large reaction resistances and the current leakage,thus the inferior *** this study,an efficient functional interlayer Ba_(0.95)La_(0.05)Fe_(0.8)Zn_(0.2)O_(3-δ)(BLFZ)in-between the anode and the electrolyte is *** electrochemical performances of P-SOECs are greatly enhanced because the BLFZ can greatly increase the interface contact,boost anode reaction kinetics,and increase proton injection into *** a result,the P-SOEC yields high current density of 0.83 A cm^(-2) at 600℃ in 1.3 Vamong all the reported Zr-rich side *** work not only offers an efficient functional interlayer for P-SOECs but also holds the potential to achieve P-SOECs with high performances and long-term stability.

关键词： Functional interlayer Zr-rich side electrolyte Protonic solid oxide electrolysis cells Current density Faradaic efficiency

Countermeasure Against Regenerative and Forced Chatter of Flexible Workpieces in Milling Processs Using Bi-directional Excitation

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Transactions of Nanjing University of Aeronautics and Astronautics 2018年第1期35卷 10-19页

作者： nakano Yutaka De Silva Amal Dilanka Takahara hiroki Akiyama Yu Department of Mechanical Engineering School of EngineeringTokyo Institute of Technology Department of Mechanical Sciences and Engineering Graduate School of Science and EngineeringTokyo Institute of Technology

A novel extended methodology for chatter suppression in milling process by applying external forced vibrations to the workpiece in two orthogonal directions which are the feed and cross-feed *** the regenerative and forced chatter suppression during the milling process of flexible workpieces are ***,the workpiece is subject to a sinusoidal periodic force in the feed direction to disrupt the regenerative ***,to minimize the forced chatter,the workpiece is subject to the periodic excitation force in cross-feed *** force is proportional to the magnitude of the estimated cutting force in cross-feed direction and has a phase opposite to the cutting force to minimize the vibration *** effectiveness of the proposed method is evaluated numerically and experimentally,for the spindle speed located in both the local minima and local maxima of the stability lobe *** numerical simulations indicate significant suppression effect in terms of vibration amplitudes,resulting in suppression of both the regenerative chatter and the forced *** were conducted by using a workpiece-mounted active stage composed of flexure hinges and driven by piezoelectric *** experimental results agree qualitatively with the numerical *** proposed method indicates a remarkable vibration reduction effect for both regenerative and forced chatters.

关键词： self-excited vibration vibration control regenerative chatter forced chatter milling

The right hepatic artery syndrome

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World Journal of Gastroenterology 2005年第19期11卷 3008-3009页

作者： Kazumi Miyashita Katsuya Shiraki Takeshi Ito hiroki Taoka Takeshi nakano First Department of Internal Medicine Mie University School of Medicine TsuMie 514-8507Japan First Department of Surgery Mie University School of Medicine TsuMie 514-8507Japan

Various benign and malignant conditions could cause biliary obstruction. Compression of extrahepatic bile duct (EBD) by right hepatic artery was reported as a right hepatic artery syndrome but all cases were compressed EBD from stomach side. Our case compressed from dorsum was not yet reported, so it was thought to be a very rare case. We present here the first case of bile duct obstruction due to the compression of EBD from dorsum by right hepatic artery.

关键词： Right hepatic artery syndrome Obstructive jaundice Extrahepatic bile duct Right hepatic artery Endoscopic retrograde cholangiography Cholangioen-terostomy

Total pancreatectomy for metachronous mixed acinar-ductal carcinoma in a remnant pancreas

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World Journal of Gastroenterology 2014年第33期20卷 11904-11909页

作者： Tatsuya Shonaka Mitsuhiro Inagaki Hiromitsu Akabane Naoyuki Yanagida hiroki Shomura Nobuyuki Yanagawa Kensuke Oikawa Shiro nakano Division of Surgery Hokkaido PWFAC Asahikawa-Kosei General Hospital Asahikawa 78-8211 Japan Gastroenterology Endoscopic Center Hokkaido PWFAC Asahikawa-Kosei General Hospital Asahi-kawa 78-8211 Japan Department of Pathology Asahikawa Medical University Asahikawa 78-8510 Japan

In October 2009, a 71-year-old female was diagnosed with a cystic tumor in the tail of the pancreas with an irregular dilatation of the main pancreatic duct in the body and tail of the pancreas. A distal pancreatectomy with splenectomy, and partial resection of the duodenum, jejunum and transverse colon was performed. In March 2011, a follow-up computed tomography scan showed a low density mass at the head of the remnant pancreas. We diagnosed it as a recurrence of the tumor and performed a total pancreatectomy for the remnant pancreas. In the histological evaluation of the resected specimen of the distal pancreas, the neoplastic cells formed an acinar and papillary structure that extended into the main pancreatic duct. Mucin5AC, α1-antitrypsin (α-AT) and carcinoembryonic antigen (CEA) were detected in the tumor cells by immunohistochemistry. In the resected head of the pancreas, the tumor was composed of both acinar and ductal elements with a mottled pattern. The proportions of each element were approximately 40% and 60%, respectively. Strongly positive α-AT cells were detected in the acinar element. Some tumor cells were also CEA positive. However, the staining for synaptophysin and chromogranin A was negative in the tumor cells. Ultimately, we diagnosed the tumor as a recurrence of mixed acinar-ductal carcinoma in the remnant pancreas. In conclusion, we report here a rare case of repeated pancreatic resection for multicentric lesions of mixed acinar-ductal carcinoma of the pancreas.

关键词： Mixed acinar-ductal carcinoma Pancreatic cancer Acinar carcinoma Total pancreatectomy

Non-cooperative optimization games in market-oriented overlay networks： an integrated model of resource pricing and network formation

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Frontiers of Computer Science 2011年第4期5卷 496-505页

作者： Yutaka OKAIE Tadashi nakano Graduate School of Engineering Osaka University Suita Osaka 565-0871 Japan

In this paper, we formulate a non-cooperative optimization game in market-oriented overlay networks where participating peers share their own computing resources to earn virtual money called energy. We model an overlay network as a set of non-cooperative resource providing peers, called platforms, that perform resource pricing and topology management to maximize their own energy gains. Resource consuming peers, called agents, are simply designed to migrate platform-to-platform to find the least expensive resources in the network. Simulation results are presented to demonstrate the market dynamics as well as the global properties of the network, i.e., resource price and network topology, that emerge from local interactions among the group of peers.

关键词： Overlay networks market mechanisms non-cooperative games mobile agents

Influences of tree characters on throughfall and stemflow from rainfall and fog in Popa Mountain Park, Myanmar

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Journal of Forestry Research 2024年第6期35卷 210-219页

作者： Yadanar Zaw hiroki Oue The United Graduate School of Agricultural Sciences Ehime University3-5-7 TarumiMatsuyamaEhime 790-8566Japan Graduate School of Agriculture Ehime University3-5-7 TarumiMatsuyamaEhime 790-8566Japan

Available water for communities is insufficient in the central part of Myanmar due to limited rainfall and surface water resources. Over the last two decades, afforestation and reforestation projects have been implemented in this region to provide sufficient water to local communities, expecting forested areas to store more rainwater than other land uses. However, there has been no research and very limited information on rainfall partitioning into throughfall(TF) and stemflow(SF), particularly concerning tree characters. Gross rainfall, TF under different canopy types, and SF of different tree types were measured in 2019. TF and SF were frequently observed even without rain but under foggy conditions. Therefore, both were partitioned into TF and SF from rainfall and fog individually. Sparser canopies resulted in larger TF from rainfall than denser canopies. However, a denser canopy delivered larger TF from fog than a sparser one. TF rates from rainfall in sparser and denser canopies were 54.5% and 51.5%, respectively, while those from fog were 15.2% and 27.2%, respectively. As a result, total TF rate in the denser canopy(70.7%) was significantly larger than that from the sparser one(64.3%). Short trees with small crown projection area and smooth bark(Type Ⅰ) resulted in larger SF from rainfall than taller trees with large crown projection area and rough bark(Type Ⅱ). However, Type Ⅱ trees resulted in larger SF from fog. SF rates by rainfall from Type Ⅰ and Ⅱ trees were 17.5% and 12.2%, respectively, while those by fog were 22.2% and 39.5%, respectively. No significant total SF rates were found for Type Ⅰ(22.5%) and Ⅱ trees(20.1%). A denser canopy results in larger TF, and Type Ⅰ trees result in larger SF. In an area where foggy conditions occur frequently and for a lengthy period, however, Type Ⅱ trees will result in larger SF. These three tree characters(dense canopies, short trees with small crown projection area and smooth bark, and tall trees with large crown p

关键词： Gross rainfall Fog interception Throughfall Stemflow

Functional imaging of astrocyte activity

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Neural Regeneration Research 2021年第6期16卷 1206-1207页

作者： hiroki Kato Tatsusada Okuno Department of Nuclear Medicine and Tracer Kinetics Osaka University Graduate School of Medicine2-2 Yamadaoka SuitaOsakaJapan Department of Neurology Osaka University Graduate School of Medicine2-2 Yamadaoka SuitaOsakaJapan

Astrocytes have become known to play a central role in various neuroinflammatory *** evaluation of astrocyte activity using functional imaging is becoming more *** metabolism or oxygen metabolism in the brain can be assessed using the established clinical imaging methods of F-18 fluorodeoxyglucose positron emission tomography(PET)and O-15 PET,***,until recently,the highly specific evaluation of metabolic activity in astrocytes has never been applied *** acetate is selectively taken up and metabolized by astrocytes,its usefulness as a tracer for measuring astrocyte activity has been proposed in basic research.

关键词： metabolism assessed clinical

Potential effects of mesenchymal stem cell derived extracellular vesicles and exosomal miRNAs in neurological disorders

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Neural Regeneration Research 2021年第12期16卷 2359-2366页

作者： Masako nakano Mineko Fujimiya Department of Anatomy Sapporo Medical University School of MedicineSapporoHokkaidoJapan

Mesenchymal stem cells are multipotent cells that possess anti-inflammatory,antiapoptotic and immunomodulatory *** effects of existing drugs for neurodegenerative disorders such as Alzheimer’s disease are limited,thus mesenchymal stem cell therapy has been anticipated as a means of ameliorating neuronal *** mesenchymal stem cells are known to scarcely differentiate into neuronal cells in damaged brain after transplantation,paracrine factors secreted from mesenchymal stem cells have been suggested to exert therapeutic *** vesicles and exosomes are small vesicles released from mesenchymal stem cells that contain various molecules,including proteins,mRNAs and *** recent years,administration of exosomes/extracellular vesicles in models of neurological disorders has been shown to improve neuronal dysfunctions,via exosomal transfer into damaged *** addition,various microRNAs derived from mesenchymal stem cells that regulate various genes and reduce neuropathological changes in various neurological disorders have been *** review summarizes the effects of exosomes/extracellular vesicles and exosomal microRNAs derived from mesenchymal stem cells on models of stroke,subarachnoid and intracerebral hemorrhage,traumatic brain injury,and cognitive impairments,including Alzheimer’s disease.

关键词： exosomes extracellular vesicles mesenchymal stem cells microRNA neurological disorders

Relapse of prostate cancer from the viewpoint of total gland volume kinetics theory

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Asian Journal of Andrology 2015年第6期17卷 904-907页

作者： hiroki Watanabe Director Watanabe Memorial Choumei ResearchLaboratory Shiga Japan Honorary Professor KyotoPrefectural University of Medicine and Meiji Universityof Integrated Medicine Kyoto Japan.

In many cases of prostate cancer, changes of prostate volume were measured very frequently after castration by means of transrectal ultrasound. For short-term observations, a factor called as ＂reduction time （tau [τ]）,＂ which means the time required for the volume of ＂effective portion＂（volume responded to castration） to be reduced to one-tenth of its original value, correlated very well with patients＇ prognosis. For long-term observations for relapse, changes of prostate volume could be divided clearly into two types, namely, ＂metastatic progressive type＂ with metastasis without volume increase and ＂local progressive type＂ with remarkable volume increase without metastasis. ＂τ＂ in the ＂local progressive type＂ was far shorter than that in the ＂metastatic progressive type.＂ Much longer survival was obtained when the patient belonged to the ＂local progressive type＂ than to the ＂metastatic progressive type.＂ Thus, ＂τ＂ was the most important and the most reliable factor to predict the prognosis. Based upon these observations, a schematic analysis of prostate cancer relapse was shown.

关键词： Relapse prostate theory