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An examination of active sites on Au-Ag bimetallic catalysts based on CO oxidation over Au/Ag_2O and a comparison to Ag-contaminated Au powder

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Chinese Journal of Catalysis 2016年第10期37卷 1712-1720页

作者： yasuo Iizuka Yasuhiro Hiragi Hikaru Yakushiji Takumi Miura 日本京都技术研究所研究生院化学与材料技术系日本京都606-8585 日本国立产业技术综合研究所(aist)大众能源研究部日本大阪563-8577

There are two theories regarding the origin of the remarkable synergistic effect observed in Au‐Ag bimetallic catalysts when applied to various oxidative reactions. One is based on the importance of the contact interfaces between AgOx regions and the surface of the bulk Au as active working sites, while the other holds that charge transfer from Ag to Au in a surface Au‐Ag alloy causes the catalytic activity. One key point in examining these theories and determining the origin of the synergy in‐volves determining whether or not Ag exists as an oxide or as a metallic alloy on the Au surface. To confirm that enhanced activity results from contact between Ag2O and Au nanoparticles （NPs）, a comparative study of catalytic CO oxidation over Au/Ag2O and Ag2O was performed in the present work, using a closed recirculation reaction system. A reaction mixture consisting of a stoichiometric composition of CO and O2 （CO/O2=2/1） was supplied to both catalysts and the resulting pressure decrease rates were tracked, from which the amounts of gas consumed as well as the quantity of CO2 produced were determined. The steady state reactions of both Au/Ag2O and Ag2O did not lead to any meaningful difference in the rate of pressure decrease during the oxidation. The pressure decrease over both catalysts was attributed to the reduction of surface lattice O on Ag2O by CO. The results obtained for Au/Ag2O are in good agreement with previous data resulting from the use of Ag‐contaminated Au powder （Ag/Au‐b） having an oxidized surfaces. This finding suggests that the perimeters between AgOx zones and the bulk Au surface may not function as active sites during CO oxidation. A review of previous results obtained with Ag/Au‐b specimens having so‐called steady state surfaces indicates that AgOx species in such materials are reduced to the 0 state to form a Ag‐Au alloy that provides the active sites.

关键词： Gold-silver bimetallic catalyst Synergy effect Carbon monoxide oxidation Active site Gold-silver alloy

Conserved properties of dendritic trees in four cortical nonpyramidal cell subtypes

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Conserved properties of dendritic trees in four cortical non...

Opening a new route to multiport coherent XUV sources via intracavity high-order harmonic generation

2012国际生理学学术大会

作者： Yoshiyuki kubota Fuyuki Karube Masaki Nomura Allan T.Gulledge Atsushi Mochizuki Andreas Schertel yasuo Kawaguchi National Institute for Physiological Sciences Japan SOKENDAI Japan CREST-JST Japan RIKEN Research Center for Allergy and Immunology(RCAI) Japan Dartmouth Medical School USA. RIKEN Advanced Science Institute Japan

＜正＞Dendritic trees influence synaptic integration and neuronal excitability,yet appear to develop in rather arbitrary *** electron microscopy and serial reconstructions,we analyzed the dendritic trees of four morphologically distinct neocortical interneuron subtypes to reveal two underlying organizational principles common to ***,cross-sectional area at any given point within a dendrite is proportional to the summed length of all distal segments spanning beyond ***,the total cross-sectional area is perfectly conserved at bifurcation ***,dendritic cross-sections become more elliptic at proximal locations,resulting in a conservation of the surface to volume ratio throughout the dendritic ***,computer simulations revealed that these conserved morphological features limit distance dependent filtering of somatic EPSPs and facilitate distribution of somatic depolarization into all dendritic *** these features were shared by all interneurons studied,they may represent common organizational principles underlying the otherwise diverse morphology of dendritic trees.

关键词： dendrite microtubule EPSP conduction

来源： cnki会议评论

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Light(Science & Applications) 2020年第1期9卷 398-406页

作者： Natsuki Kanda Tomohiro Imahoko Koji Yoshida Akihiro Tanabashi AAmani Eilanlou yasuo Nabekawa Tetsumi Sumiyoshi Makoto Kuwata-Gonokami Katsumi Midorikawa RIKEN Center for Advanced Photonics RIKENWakoSaitama 351-0198Japan Photon Science Center The University of TokyoTokyo 113-8656Japan Intstitute for Solid State Physics The University of TokyoKashiwaChiba 277-8581Japan Cyber Laser Inc. WakoSaitama 351-0104Japan Institute for Photon Science and Technology The University of TokyoTokyo 113-0033Japan Department of Physics The University of TokyoTokyo 113-0033Japan

High-order harmonic generation(HHG)is currently utilized for developing compact table-top radiation sources to provide highly coherent extreme ultraviolet(XUV)and soft X-ray pulses;however,the low repetition rate of fundamental lasers,which is typically in the multi-kHz range,restricts the area of application for such HHG-based radiation ***,we demonstrate a novel method for realizing a MHz-repetition-rate coherent XUV light source by utilizing intracavity HHG in a mode-locked oscillator with an Yb:YAG thin disk laser medium and a 100-m-long ring *** have successfully implemented HHG by introducing two different rare gases into two separate foci and picking up each HH *** to the two different HH beams generated from one cavity,this XUV light source will open a new route to performing a time-resolved measurement with an XUV-pump and XUV-probe scheme at a MHzrepetition rate with a femtosecond resolution.

关键词： intracavity coherent repetition

A Case of Benign Metastasizing Leiomyoma:Pathobiological Behavior Showing A Low-grade Malignant Potential

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Chinese Journal of Clinical Oncology 2008年第2期5卷 154-156页

作者： Huachuan Zheng Tsuneyama Koichi Takano yasuo Department of Biochemistry and Molecular Biology College of Basic Medicine China Medical University Shenyang 110001 Liaoning province China. Department of Diagnostic Pathology Graduate School of Medicine and Pharmaceutical Sciences University of Toyama Toyama 930-0194 Japan.

Case Report A 38-year-old woman underwent a hysterectomy for a uterine tumor. A giant circumscribed nodule with a diameter of 20 cm at its widest point was found within the myometrium of the uterine corpus without hemorrhage or necrosis. More than 10 specimens were pathologically examined. Eleven years after hysterectomy, she developed five tumors （the largest diameter = 2 cm） in the right lung and retroperitoneal tumor （the largest diameter = 9.5 cm）. Microscopic examination indicated uterine, retroperitoneal and pulmonary foci, which were characterized by a benign appearance, including nodular smoothmuscle proliferation. The smooth muscle cells had an oval shape with relatively clear cytoplasm and a few irregular nuclei. In each specimen, spindle-shaped cells showed an interlacing bundle pattern with intermediated cellularity. The mitotic index was very low and no nuclear atypia was observed （Fig. 1）. Even though the serial pathological examination did not indicate any malignant potential, we diagnosed this case as benign metastasizing leiomyoma （BML）.

关键词： benign metastasizing leiomyoma uterus lung retroperitoneum immunohistochemistry.

An Accuracy Improvement for the Clinical Test Result by United ISO-GUM and QE

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Computer Technology and Application 2013年第1期4卷 6-16页

作者： yasuo Iwaki Chaos Applied Research Office Kyoto 612-8493 Japan

This research developed the technology which united ISO-GUM （International Organization of Standard-Guide to Express of Uncertainty in Measurement） and QE （Quality Engineer） strategically and employed both feature efficiently. Although to tow technology of purpose use is same, each has future. The purpose is scheduled to improve the accuracy as a result of the clinical examinations. The result of research was used for diagnosis by equivalent Quality Control （eqQC） of the same level when and where, that are needed for broader-based medical system of the time of IT-era. Since National Institute of Standard and Technology （NIST） is recommend use of complicated operation by ISO-GUM for uniting, realization required the newest high quality computer technology. The algorithm of the complexity system of operation is that Fast Fourier Transform （FFT）, Inverse Fast Fourier Transform （IFFT） and Multi-variance Analysis （MA） are needed in Fig. 4. The main new improving points are changed of ambiguous expression method of data, and the pursuit which the cause of worsens accuracy put into data. All data with an assurance reported the final result for patient or donor. Medical laboratory quality system service is offered essential in the laboratory to be correct result for health care by Good Laboratory Practices （GLP） useful ISO 15189. Quality Assurance （QA） is achieved though system reliability.

关键词： ISO-GUM (International Organization of Standard-Guide to Express of Uncertainty in Measurement) QE (QualityEngineer) IT-era clinical test QC (Quality Control) GLP (Good Laboratory Practices).

SOA Direct Modulation in Wavelength-Selectable Laser Array Light Sources

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光学学报 2003年第S1期23卷 431-432页

作者： Kazuo Kasaya Ken Tsuzuki Hiroaki Sanjoh yasuo Shibata Yuichi Tohmori NTT Photonics Laboratories NTT Corporation 3-1 Morinosato Wakamiya Atsugi-shi Kanagawa Pref 243-0198 Japan

We demonstrated, for the first time, 2.5-Gb/s SOA direct modulation in the wavelength-selectable DFB laser array. The SOA direct modulation was achieved in the wide tuning range of 22.7nm by selecting arrayed laser an... 详细信息

关键词： DFB laser range of

Third-line therapies in patients with Kawasaki disease refractory to first-and second-line intravenous immunoglobulin therapy

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World Journal of Pediatrics 2022年第11期18卷 781-785页

作者： Takashi Furuta Hiroki Yasudo Seigo Okada Yuji Ohnishi Akiko Kawakami-Miyake yasuo Suzuki Shouichi Ohga Shunji Hasegawa Department of Pediatrics Yamaguchi University Graduate School of Medicine1-1-1 MinamikogushiUbeYamaguchi755-8505Japan Department of Pediatrics Graduate School of Medical SciencesKyushu University3-1-1 MaidashiHigashi-kuFukuoka812-8582Japan

Kawasaki disease(KD)is an acute febrile ilness characterized by systemic vasculitis affecting the small-and mediumsized arteries in children [1,2].One of the most critical complications of KD is the development of coronary artery lesions(CALs)approximately after 12 days of ilness,which may lead to myocardial infarction[3].High-dose intravenous immunoglobulin(IVIG)and oral administration of aspirin have been established as the first-line therapy for KD[4,5].

关键词： intravenous acute immunoglobulin

Laparoscopic right hemicolectomy for ascending colon cancer with persistent mesocolon

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World Journal of Gastroenterology 2014年第18期20卷 5557-5560页

作者： Atsushi Tsuruta Akimasa Kawai yasuo Oka Hideo Okumura Hideo Matsumoto Toshihiro Hirai Masafumi Nakamura Department of Digestive Surgery Kawasaki Medical SchoolOkayama 701-0192Japan

Persistent ascending or descending mesocolon is an embryological anomaly that occurs during the final process of intestinal development in ***,the primitive dorsal mesocolon fails to fuse with the parietal peritoneum in the fifth month of ***,we describe a case of ascending colon cancer with persistent ascending and descending mesocolon treated by laparoscopic right *** computed tomography imaging of the abdomen demonstrated that the descending colon shifted at the midline of the abdomen and the sigmoid colon was located under the ascending *** detailed preoperative imaging examination revealed malpositioning of the large intestine and aided in the procedural *** persistent mesocolon may result in the formation of abnormal adhesions,an accurate preoperative diagnosis is *** propose that it is important to consider this anomaly when making the preoperative imaging diagnosis to ensure a safe operation.

关键词： Laparoscopic surgery Colon cancer Persistent descending mesocolon Persistent ascending mesocolon Mobile cecum

The Empirical Studies on IT Management Effectiveness in Japan: 2000,2002 and the Future

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Journal of Electronic Science and Technology of China 2004年第3期2卷 70-73页

作者： KADONO yasuo Management Science Institute Inc. Tokyo University of Foreign Studies Tokyo 154-0004 Japan

Many corporate senior managers have not been fully convinced of successful IT management over a period of decades. In order to clarify the mechanism of IT management in companies, we conducted the surveys on IT management in 2000 and 2002. Through the surveys and analyses, we found the causal structure in IT management, developed 'IT Management Effectiveness' as a new measurement tool, published ranking lists of high scored companies, and analyzed characteristics of industry/sizes of respondents and so on. Based on the surveys and researches so far, we would suggest future works, such as comparison of Japanese companies with overseas companies, time series analyses.

关键词： IT management effectiveness empirical study ranking