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Yellow luminescence of co-doped gadolinium oxyhydroxide

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Journal of Rare Earths 2015年第7期33卷 712-716页

作者： Hiroaki Samata Shungo Imanaka Masashi Hanioka Tadashi C.ozawa Graduate School of Maritime Sciences Kobe University Fukaeminami International Center for Materials Nanoarchitectonics National Institute for Materials Science

Crystals of co-doped gadolinium oxyhydroxide （GdOOH）, Gd0.98Eu0.02-xTbxOOH and Gd1-y-zDyyBizOOH, were synthesized by a flux method. The color coordinates in the Commission Internationale de I＇Eelairage （CIE） chromaticity diagram of Gd0.98Eu0.02-xTbxOOH, obtained under 254 nm irradiation, shifted along a straight line with the changing values ofx to include the yellow region. The CIE coordinates of Dy^3＋ doped in GdOOH were located in the yellow region, while the emission intensity of Dy^3＋ under 286 nm irradiation increased by more than 40 times when co-doped with Bi^3＋.

关键词： gadolinium oxyhydroxide phosphor co-doping yellow luminescence rare earths

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High-Speed Rail Station Interconnectivity and Ridership

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Journal of Transportation Technologies 2022年第2期12卷 193-208页

作者： Hualiang (Harry) Teng Tarik Toughrai Tingting Yu Russell ozawa Department of Civil and Environmental Engineering University of Nevada Las Vegas Nevada School of Engineering The Ecole Nationale des Travaux Publics de l’Etat Lyon France

The objective of this study was to quantify multimodal connectivity of HSR stations and its impact on ridership in four countries: France, Spain, Japan and China. In this study, multimodal connectivity is measured by the number of different modes of transportation connected to HSR stations, the number of installed arrival and departure facilities for each mode, the transfer time from connecting modes to boarding platforms at HSR stations, and the arrival time intervals of public transportation modes. Data were collected from HSR systems of these four countries. The relationship between ridership and the characteristics of multimodal connectivity was identified using regression models developed in this study. All the connectivity variables considered in this study influence ridership in these four countries in different ways. On the whole, bus, subway, and regional railroad services influence ridership significantly. For instance, the more bus services connected to the station, the higher the ridership. This trend is apparent in three of the four countries, France being the exception. Also, subway, light rail, and traditional rail are modes of high-capacity transportation. Their connection to HSR stations always implies high ridership for high-speed rail. The number of facilities also shows significant impacts on HSR ridership. For instance, the more bus and subway stops, and the more bicycle parking and taxi stands, the higher the ridership. Transfer time also has a significant influence.

关键词： High Speed Rail Multimodal Connectivity Ridership Regression Analysis

Guest Editorial:Special Section on the Second China-Japan Academic Symposium on Nuclear Fuel Cycle(ASNFC-2013)

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Nuclear Science and Techniques 2015年第1期 3-4页

作者： Yuezhou WEI Masaki ozawa School of Nuclear Science and Engineering Shanghai Jiao Tong University Research Laboratory for Nuclear Reactors Tokyo Institute of Technology

Shanghai,China,November 27-30,2013As a high-density energy with almost no discharge of greenhouse gas,nuclear energy plays an important role in long-term energy security and global warming ***,to realize a sustainable development of nuclear energy for the future,it is necessary to save uranium resource and minimize radioactive *** nuclear fuel

关键词： ASNFC-2013 Guest Editorial CAS

Geldanamycin induces CHOP expression through a 4-(2-aminoethyl)-benzenesulfonyl fluoride-responsive serine protease

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Cell Research 2007年第2期17卷 184-186页

作者： Toru Hosoi Kanae Hyoda Yasunobu Okuma Yasuyuki Nomura Koichiro ozawa Department of Pharmacotherapy Graduate School of Biomedical SciencesHiroshima University1-2-3 KasumiMinami-kuHiroshima 734-8551Japan Department of Pharmacology Graduate School of Pharmaceutical SciencesHokkaido UniversitySapporo 060-0812Japan Department of Pharmacology Faculty of Pharmaceutical SciencesChiba Institute of SciencesChoshiChiba 288-0025Japan

Dear Editor:Geldanamycin is a benzoquinone ansamycin,which wasoriginally described as a tyrosine kinase ***-ever,subsequent studies have revealed that geldanamycinbinds to and inhibits heat-shock protein 90(Hsp90)activity[1].Hsp90 is a molecular chaperone involved in the con-formational maturation of proteins such as mutated p53,Raf-1,Akt,Bcr-Ab1,and *** is suggested that agentsinhibiting Hsp90 have anti-cancer properties,although theprecise molecular mechanisms underlying the anti-cancereffects of geldanamycin are not well *** evidence has suggested that diabetes andneurodegenerative disorders such as Parkinson's andAlzheimer's diseases are related to the disruption ofendoplasmic reticulum(ER)*** response to ERstress,unfolded proteins accumulate and aggregate in theER,which will trigger many rescuer responses,includingthe unfolded protein response(UPR)and ***,geldanamycin has been shownto upregulate ER chaperones and the expression of CHOP[2].Moreover,Hsp90 associates with PERK and IRE1α,ER-resident trans-membrane protein kinases involved inER stress response[3].These observations suggest that

关键词： CHOP benzenesulfonyl fluoride-responsive serine protease ER aminoethyl Geldanamycin induces CHOP expression through a 4

Evaluation of Reactive Oxygen Species (ROS) Generated on the Surface of Copper Using Chemiluminesence

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Materials Sciences and Applications 2023年第10期14卷 482-499页

作者： Ken Hirota Hiroya Tanaka Taika Maeda Kazuhiko Tsukagoshi Hiroshi Kawakami Takashi ozawa Masahiko Wada Research Center of Bio-Micro-Fluidic Science Doshisha University Kyoto Japan Department of Chemical Engineering and Materials Science Faculty of Science & Engineering Doshisha University Kyoto Japan Graduate School of Engineering College of Engineering Osaka Metropolitan University Osaka Japan Japan Copper Development Association Tokyo Japan

The antibacterial activity of copper is well-known from an ancient civilization, however, its biocidal mechanism has not been necessarily elucidated. Notwithstanding up to now, mainly 4 processes have been proposed. Among them, it is cleared that 4 kinds of reactive oxygen species (ROS): hydroxyl radical ·OH, hydrogen per oxide H2O2, superoxide anion ·O-2 and singlet oxygen 1O2, play an important role for contact-killing of bacteria, viruses and fungi. In this paper, generation of ROS on the surfaces of copper plates heated from room temperature to 673 K for 4.2 × 102 s in air, was investigated using the chemiluminescence. ROS have been evaluated by selecting the most suitable scavengers, such as 2-propanol for ·OH, sodium pyruvate for H2O2, nitro blue tetrazolium for ·O-2, and sodium azide NaN3 for 1O2. At the same time the outermost surface of copper, on which thin film of cuprous oxide Cu2O was first formed and then cupric oxide CuO was laminated on Cu2O, was examined by thin-film XRD and TEM analysis to estimate the amounts and kinds of copper oxides. It was found that the most amounts of ROS were obtained for the 573 K-heated Cu plate and they were composed of ·OH, H2O2, and ·O-2..

关键词： Copper Microbial Activity Reactive Oxygen Species Chemiluminescence Scavengers

Ni-induced stepwise capacity increase in Ni-poor Li-rich cathode materials for high performance lithium ion batteries

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Nano Research 2015年第3期8卷 808-820页

作者： Delai Ye Chenghua Sun Yu Chen Kiyoshi ozawa Denisa Hulicova-JurcakovaI Jin Zou Lianzhou Wang Nanomaterials Centre School of Chemical Engineering and Australian Institute of Bioengineering and Nanotechnology The University of Queensland Brisbane QLD 4072 Australia School of Chemistry Monash University Clayton Victoria 3800 Australia National Institute for Materials Science Tsukuba Ibaraki 305-0047 Japan Centre for Microscopy and Microanalysis and Material Engineering The University of Queensland Brisbane QLD 4072 Australia

Li 富有的阴极材料为高精力的锂离子电池(解放) 被认为候选人同样有希望。在这研究，我们报导Li富有的材料的一个新系列(李[李 1/32x/3 Mn 2/3x/3 Ni x ]O 2 ( 0.09 x 0.2 ))在解放作为阴极材料与 Ni 的小数量做了，它由于李的... 详细信息

Li 富有的阴极材料为高精力的锂离子电池(解放) 被认为候选人同样有希望。在这研究，我们报导Li富有的材料的一个新系列(李[李 1/32x/3 Mn 2/3x/3 Ni x ]O 2 ( 0.09 x 0.2 ))在解放作为阴极材料与 Ni 的小数量做了，它由于李的连续激活展出了能力增加的不平常的现象直到十个周期 2 MnO 3 阶段。试验性、计算的结果显示不同于通常学习的做 Ni 的 Li 富有的阴极材料，做的 Ni 的更小的数量能提拔逐步的李 2 MnO 获得的 3 激活增加了特定的能力和更好骑车的能力。相反，过多的 Ni 愿望在激活上李 2 MnO 在在第一的大能力损失的 3 和结果骑车。李 1.25 Mn 0.625 Ni 0.125 O 有 Ni 的一个优化内容的 2 材料高交付了上级能力 280 mAh ?瀠汯??瑳特湥?潣洭污楥??€ ????????????????????楢慬敹?????搠獩潣摩污?慮潮慰瑲捩敬？？

关键词：锂离子电池正极材料镍正极循环稳定性性能产能镍掺杂计算结果

Cellular irinotecan resistance in colorectal cancer and overcoming irinotecan refractoriness through various combination trials including DNA methyltransferase inhibitors: a review

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Cancer Drug Resistance 2021年第4期4卷 946-964页

作者： Shogo ozawa Toshitaka Miura Jun Terashima Wataru Habano Division of Pharmacodynamics and Molecular Genetics School of PharmacyIwate Medical UniversityYahabaIwate 0283694Japan

Treatment with pharmacological drugs for colorectal cancer(CRC)remains unsatisfactory.A major cause of failure in pharmacotherapy is the resistance of colon cancer cells to the drugs,creating an urgent *** this review,we summarize previous studies on the resistance of CRC cells to irinotecan and discuss possible reasons for *** review presents the following five major causes of irinotecan resistance in human CRC:(1)cellular irinotecan resistance is induced mainly through the increased expression of the drug efflux transporter,ABCG2;(2)cellular irinotecan resistance is also induced in association with a nuclear receptor,pregnane/steroid X receptor(PXR/SXR),which is enriched in the CYP3A4 gene enhancer region in CRC cells by exposing the cells to SN-38;(3)irinotecan-resistant cells possess either reduced DNA topoisomerase I(Top1)expression at both the mRNA and protein levels or Top1 missense mutations;(4)alterations in the tumor microenvironment lead to drug resistance through intercellular vesicle-mediated transmission of miRNAs;and(5)CRC stem cells are the most difficult targets to successfully treat *** the clinical setting,CRC gradually develops resistance to initially effective irinotecan-based *** solve this problem,several clinical trials,such as irinotecan plus cetuximab *** monotherapy,have been *** clinical trial on irinotecan plus guadecitabine,a DNA-methyltransferase inhibitor,has also been conducted.

关键词： Drug resistance colorectal cancer anti-cancer drugs irinotecan ABCG2 DNA topoisomerase I cancer stem cells epigenetics

ADSORPTION EQUILIBRIA OF GASES ON H-MORDENITE UNDER HIGH PRESSURE

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Chinese Journal of Chemical Engineering 1990年第2期 267-275页

作者：丁同富 Sentaro ozawa Yoshisada Ogino Chemical Engineering Department Zhejiang UniversityHangzhou Department of Chemical Engineering Tohoku UniversityJapan

The adsorption equilibria of N2,Ar,CH4,CO2,and N2O on H-Mordenite were studied with a constant volume appa-ratus under pressure from 3.04×103 to 1.43×107 Pa at—196°,0°,25°,50° and 75℃.The amount of adsorption ofN2,Ar and CH4 increases with pressure until approaching saturation at about 6.08×106 Pa.A maximum exists on theadsorption isotherm of CO2 and N2O,and their isotherms at different temperatures cross each *** the data obtainedin this work can be correlated by the extended adsorption potential theory quite *** experimental points can be repre-sented by the generalized characteristic curve.

关键词： isotherms adsorbent saturation equilibria adsorbed therm handle approaching molar chamber

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A new sodium iron phosphate as a stable high-rate cathode material for sodium ion batteries

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Nano Research 2018年第12期11卷 6197-6205页

作者： Xiaobo Zhu Takashi Mochiku Hiroki Fujii Kaibin Tang Yuxiang Hu Zhenguo Huang Bin Luo Kiyoshi ozawa Lianzhou Wang Nanomatefials Centre School of Chemical Engineering and Australian Institute for Bioengineering and NanotechnologyThe University of QueenslandQLD 4072Australia National lnstitute for Matefials Science 1-2-1SengenTsukuba-cityIbaraki 305-0047Japan Hefei National Laboratory for Physical Science at Microscale and Department of Chemistry University of Science and Technology of ChinaHefei 230026China School of Civil and Environmental Engineering University of Technology SydneyNSW 2007Australia

Low-cost room-temperature sodium-ion batteries (SIBs) are expected to promote the development of stationary energy storage applications. However, due to the large size of Na+, most Na+ host structures resembling their Li+ counterparts show sluggish ion mobility and destructive volume changes during Na ion (de)intercalation, resulting in unsatisfactory rate and cycling performances. Herein, we report a new type of sodium iron phosphate (Na0.71Fe1.07PO4), which exhibits an extremely small volume change (~ 1%) during desodiation. When applied as a cathode material for SIBs, this new phosphate delivers a capacity of 78 mA·h·g−1 even at a high rate of 50 C and maintains its capacity over 5,000 cycles at 20 C. In situ synchrotron characterization disclosed a highly reversible solid-solution mechanism during charging/discharging. The findings are believed to contribute to the development of high-performance batteries based on Earth-abundant elements.

关键词： sodium iron phosphate low volume change cathode material long cycle rate performance sodium ion batteries