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Chiral Electrodeposition by the Rotation in a Vertical Magnetic Field

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Journal of Iron and Steel Research International 2012年第S2期19卷 1158-1161页

作者： aogaki ryoichi TAKAGI Satoshi MORIMOTO ryoichi SUGIYAMA Atsushi MOGI Iwao ASANUMA Miki MIURA Makoto OSHIKIRI Yoshinobu YAMAUCHI Yusuke Polytechnic University Ryogoku Sumida-kuTokyo130-0026Japan National Institute for Materials Science(NIMS) Tsukuba Ibaraki305-0044Japan Saitama Prefectural Okubo Water Filtration Plant Saitama 338-0814Japan Graduate School of Advanced Science and Engineering Waseda University Institute for Materials Research Tohoku University Yokohama Harbour Polytechnic College Polytechnic College Akita Yamagata College of Industry and Technology National Institute for Materials Science(NIMS)

The roles of the rotations in the process of chirality appearance in magnetoelectrodeposition were theoretically *** in a vertical magnetic field induces a macroscopic fluid rotation called vertical MHD flow(VMHDF) over the electrode *** the rotation,minute numerous micro-vortexes called micro-MHD flow(MMHDF) arise from 2D and 3D nucleation,which interact with the mass flux of metallic ion,yielding chiral deposits with the characteristic features called micro- and nano-mystery ***,numerous vortexes always keep chiral symmetry,forming four types of vortexes,i.e.,with the combination of upward or downward and clockwise or ***,ionic vacancy acting as an atomic scale lubricant is created in electrodeposition,which gives a restriction to the vortexes;the bottom of an upward vortex covered with ionic vacancies becomes a free surface without friction,whereas the bottom of a downward vortex exposed without ionic vacancies remains rigid with *** rotation of VMHDF donates a precession to the upward vortexes to rotate in the same direction,which finally yield a chiral *** similar effect to that of VMHDF can be expected for the system rotation(SR),where an electrolytic cell rotates in a vertical magnetic *** this case,the SR gives the reverse rotation to the upward vortexes,so that a deposit with reverse chirality is obtained.

关键词： chirality chiral electrodeposition magnetoelectrodeposition rotation magnetic field ionic vacancy

Bi-Cu film deposition in aqueous solutions

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中国有色金属学会会刊：英文版 2009年第4期19卷 791-794页

作者： Hitoshi WADA Yasuhiro NISHISAKA ryoichi ICHINO Masazumi OKIDO Taiho Kogyo Co.Ltd. Department of Materials Science and Engineering Nagoya University

The relatively uniform bismuth-copper film was electrodeposited between -15 and -20 mV in the sulfate electrolyte containing 4 mmol/L bismuth ion and 2 mmol/L copper *** copper was electrodeposited at -5 *** dendritic bismuth-copper film was electrodeposited under -20 *** cathodic current became constant between -20 and -400 ***,bismuth-copper electrodeposition changes from charge transfer controlling to diffusion controlling at -20 *** the other hand,the uniform bismuth-copper film was electrodeposited between -5 and -35 mV in the methanesulfonate electrolyte containing 4 mmol/L bismuth ion and 2 mmol/L copper *** dendritic bismuth-copper film was electrodeposited under -35 *** potential region for good electrodepositon in methanesulfonate electrolyte is wider than that in sulfate ***,it is easy to control electrodeposition conditions by using methanesulfonate electrolyte.

关键词：薄膜沉积铜薄膜水溶液硫酸电解液扩散控制铋离子电沉积电解质

Spatially adaptive long-term semi-Lagrangian method for accurate velocity advection

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Computational Visual Media 2018年第3期4卷 223-230页

作者： Takahiro Sato Christopher Batty Takeo Igarashi ryoichi Ando The University of Tokyo Tokyo Japan University of Waterloo Waterloo Canada. National Institute of Informatics Japan.

We introduce a new advection scheme for fluid *** main contribution is the use of long-term temporal changes in pressure to extend the commonly used semi-Lagrangian scheme further back along the time *** algorithm starts by tracing sample points along a trajectory following the velocity field backwards in time for many *** this backtracing process,the pressure gradient along the path is integrated to correct the velocity of the current time *** show that our method effectively suppresses numerical diffusion,retains small-scale vorticity,and provides better long-term kinetic energy preservation.

关键词： fluid simulation advection method ofcharacteristics spatially adaptive inte-gration interpolation error correction

Surface characteristics of chemical conversion coating for Mg-Al alloy

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中国有色金属学会会刊：英文版 2009年第4期19卷 892-897页

作者： Masazumi OKIDO ryoichi ICHINO Seong-Jong KIM Seok-Ki JANG Nagoya University Division of Marine Engineering Mokpo Maritime University

The chemical conversion coating was formed on Mg alloy for low cost and harmlessness in environment by using the colloidal silica as the main *** film formed at 298 K was thick,which was thought to be the combination of Si and *** salt spray test,the ratio of black rust on the specimen that did not conducted chemical conversion treatment was five times or more than those of the chemical conversion treated *** film of chemical conversion coating produced by alkali treatment process was thinner than the specimen produced in basic chemical conversion treatment solution.

关键词：化学转化膜镁铝合金表面特性环境无害化盐雾试验涂膜厚度低成本硅溶胶

Electrochemical characteristics and surface morphology in non-chromate chemical conversion coating for Zn-electroplated steel sheets

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中国有色金属学会会刊：英文版 2009年第B09期19卷 45-49页

作者： Masazumi OKIDO ryoichi ICHINO Seok-Ki JANG Seong-Jong KIM Graduate School of Engineering Nagoya University Division of Marine Engineering Mokpo Maritime University

The corrosion protection property and morphology of colloidal silica conversion films as an alternative to chemical conversion coating(CCC) films were examined. The corrosion behavior was investigated in 3% NaCl solution using electrochemical techniques. Corrosion was implied by the appearance of red rust on the specimen surface. The results show that in 3% NaCl solution, red rust appears at 15-20, 55-70, and 75-85 d on Zn-electroplated steel, colloidal silica conversion-coated specimens, and chemical conversion-coated, specimens, respectively. In the salt spray test, the colloidal silica film provides better corrosion protection than CCC film, i.e., red rust appears at 96 h on the Zn-electroplated steel sheet, at 432 h on the CCC films, and at 888 h on silica conversion coating.

关键词：化学转化膜电镀钢板表面形貌电化学特性 3%NaCl溶液胶体二氧化硅二氧化硅薄膜 CCC认证

Clinical translation of bioartificial liver support systems with human pluripotent stem cell-derived hepatic cells

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World Journal of Gastroenterology 2017年第11期23卷 1974-1979页

作者： ryoichi Sakiyama Brandon J Blau Toshio Miki Department of Surgery Keck School of MedicineUniversity of Southern CaliforniaLos AngelesCA 90033United States

There is currently a pressing need for alternative the-rapies to liver transplantation. The number of patients waiting for a liver transplant is substantially higher than the number of transplantable donor livers, resulting in a long waiting time and a high waiting list mortality. An extracorporeal liver support system is one possible approach to overcome this problem. However, the ideal cell source for developing bioartificial liver(BAL) support systems has yet to be determined. Recent advancements in stem cell technology allow researchers to generate highly functional hepatocyte-like cells from human pluripotent stem cells(h PSCs). In this mini-review, we summarize previous clinical trials with different BAL systems, and discuss advantages of and potential obstacles to utilizing h PSC-derived hepatic cells in clinical-scale BAL systems.

关键词： Artificial liver Clinical trial Hepatocytes Pluripotent stem cells Bioreactors

Hydrogen Effect on Coke Removal and Catalytic Performance in Pre-Carburization and Methane Dehydro-Aromatization Reaction on Mo/HZSM-5

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Journal of Natural Gas Chemistry 2005年第3期14卷 129-139页

作者： ryoichi Kojima Satoshi Kikuchi Masaru Ichikawa Catalysis Research Center Hokkaido University N-21 W-10 Kita-ku Sapporo 001-0021 Japan Catalysis Research Center Hokkaido University N-21 W-10 Kita-ku Sapporo 001-0021 Japan Catalysis Research Center Hokkaido University N-21 W-10 Kita-ku Sapporo 001-0021 Japan

In this study, the effects of pre-carburization of catalyst, hydrogen addition to methane feed and the space velocity of methane on the catalytic performance in methane to benzene （MTB） reaction were discussed in detail over Mo/HZSM-5 catalyst at 1023 K and 0.3 MPa. Compared with the non-precarburized catalyst, the Mo catalyst pre-carburized under the flow of CHa＋4H2 at 973 K was found to have the higher activity and better stability. Further 6% H2 addition to the methane feed suppressed the aromatic type of coke formation effectively, and improved the stability of catalyst markedly, moreover gave a much longer reaction life of catalyst （53 h at 1023 K and 5400 ml/（g-h）） and much more formation amounts of benzene and hydrogen. With increase of methane space velocity, both the naphthalene formation selectivity and the coke formation selectivity were decreased by the shortened contact time; the benzene formation selectivity and total formation amount before the complete deactivation of catalyst were increased markedly, while the total naphthalene and coke formation amounts did not change much. At high methane space velocity （≥5400 ml/（g·h））, a new middle temperature coke derived from the high temperature aromatic coke was formed on the catalyst; all the coke formed could be burnt off at lower temperature in oxygen, compared with those obtained at low space velocity. Considering the benzene formation amount and catalyst stability together, 5400 ml/（g·h） was proved to be the most efficient methane space velocity for benzene production.

关键词： methane dehydro-aromatization pre-carburization space velocity H2 addition benzene formation amount aromatic coke

Solution-based polycrystalline silicon transistors produced on a paper substrate

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npj Flexible Electronics 2017年第1期1卷 106-111页

作者： Miki Trifunovic Paolo Maria Sberna Tatsuya Shimoda ryoichi Ishihara Department of Electronic Components Technology and MaterialsDelft University of TechnologyBuilding 36Mekelweg 4Delft 2628 CDThe Netherlands School of Material and Science Japan Advanced Institute of Science and Technology1-1 AsahidaiNomiIshikawa 923-1292Japan

Printing of electronics is pursued as a low-cost alternative to conventional manufacturing *** addition,owing to relatively low process temperatures,flexible substrates can be used enabling novel *** flexible substrates,paper was found to be a particularly interesting candidate,since it has an order of magnitude lower price than low-cost polymer alternatives,and is *** ink materials,organic and metal-oxide semiconductors are thoroughly being investigated;however,they lack in electric performance compared to silicon in terms of device mobility,reliability,and energy *** recent years,liquid precursors for silicon were found and used to create polycrystalline silicon(poly-Si).However,fabrication of transistors on top of low-cost flexible substrates such as paper has remained an outstanding *** we demonstrate both p-channel and nchannel poly-Si thin-film transistors(TFTs)fabricated directly on top of paper with field-effect mobilities of 6.2 and 2.0 cm2/V s,*** fabrication challenges have been overcome by limiting the maximum process temperature to approximately 100℃,and avoiding liquid chemicals commonly used for etching and *** of poly-Si has been achieved by additive selective crystallization of the precursor film using an excimer *** work serves as a proof of concept,and has the potential to further improve device *** to the low-cost,biodegradable nature of paper,and the high performance,reliability,and energy efficiency of poly-Si TFTs,this work opens a pathway toward truly low-cost,low-power,recyclable applications including smart packages,biodegradable health monitoring units,flexible displays,and disposable sensor nodes.

关键词： polycrystalline film overcome

AIM associated with the IgM pentamer: attackers on stand-by at aircraft carrier

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Cellular & Molecular Immunology 2018年第6期15卷 563-574页

作者： Toru Miyazaki Tomoko Yamazaki ryoichi Sugisawa M Eric Gershwin Satoko Arai Laboratory of Molecular Biomedicine for Pathogenesis Center for Disease Biology and Integrative MedicineFaculty of MedicineThe University of TokyoTokyo 113-0033Japan CREST Japan Agency for Medical Research and DevelopmentTokyo 113-0033Japan Max Planck-The University of Tokyo Center for Integrative Inflammology Tokyo 113-0033Japan Division of Rheumatology Allergy and Clinical Immunology The University of California School of MedicineDavisCA 95616USA

Circulating immunoglobulin M(IgM)exists in a pentameric form,possessing a polyreactive nature that responds not only to foreign antigens but also to autoantigens;thus,it is involved in both beneficial and detrimental immune responses,including protection from infection and the progression of *** the other hand,IgM also behaves as a carrier of the apoptosis inhibitor of macrophage(AIM)protein,storing a large amount of the inactivated form of AIM in the blood through this *** different disease conditions,AIM can dissociate from IgM locally or systemically to exert its function,inducing the removal of various biological debris such as excess fat,bacteria,cancer cells or dead cell *** typically,upon induction of acute kidney injury(AKI),IgM-free AIM is filtered by the glomerulus in the kidney,which stimulates the clearance of intraluminal dead cells debris at the obstructed proximal tubules,thereby facilitating the repair of kidney ***,cats exhibit a deficiency in AIM release from IgM,which may increase their susceptibility to renal ***,association with AIM inhibits IgM binding to the Fcα/μreceptor on follicular dendritic cells at the splenic germinal center,thereby protecting the IgM immune complex from Fcα/μreceptor-mediated internalization,which supports IgM-dependent antigen presentation to B cells and stimulates high-affinity IgG antibody *** regulation of AIM–IgM binding,resulting from the discovery of reciprocal actions between AIM and IgM,could lead to the development of novel therapies against different diseases.

关键词： apoptosis inhibitor of macrophage(AIM) immunoglobulin M(IgM) acute kidney injury(AKI) hepatocellular carcinoma(HCC) cat renal failure