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ENVIRONm.NTAL FRIENDLY ANODIZING ON AZ91D m.GNESIUm.ALLOYS AND COATING CHARACTERISTICS

Acta m.tallurgica Sinica(English Letters) 2005年第3期18卷 411-415页

作者： A. Saijo m. Hino m. hiramatsu T. Kanadani Hori m.tal Finishing Industry Co. Ltd. Abe Ochiai-cho Takahashi-shi Okayama 716-0061 Japan Industrial Technology Research Institute of Okayama Prefecture Haga Okayama-sh i Okayama 701-1296 Japan Industrial Technology Research Institute of Okayama Prefecture Haga Okayama-sh i Okayama 701-1296 Japan Graduate School of Okayama University of Science Ridai-cho Okayama-shi Okayam a 700-0005 Japan

An environm.ntal friendly anodizing treatm.nt (Anom.g) from.a phosphate-based so lution without heavy m.tals on AZ91D m.gnesium.alloy was studied. The characteri stics of the coatings, such as structure, com.osition and corrosion resistance w ere investigated. The effects of this anodizing treatm.nt on the m.chanical prop erties were exam.ned. X-ray diffraction (XRD) analysis revealed that the structu re of the coatings is am.rphous or glassy. In salt spray tests coatings with an average thickness of 10μm.had an anticorrosive perform.nce of over 1000 hours. Fatigue tests revealed that anodizing onto AZ91D m.gnesium.alloy does not affect the fatigue strength. These results dem.nstrate the utility of this anodizing t reatm.nt on m.gnesium.alloy for application as a structural m.terial, such as in the autom.tive field.

关键词： m.gnesium.alloy anodizing environm.ntal friendliness

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ELECTROPLATED Zn-Ni-SiO_2 COm.OSITE COATINGS TREATED WITH A SILANE COUPLING AGENT TO REPLACE CHROm.TING

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Acta m.tallurgica Sinica(English Letters) 2005年第3期18卷 416-422页

作者： m. Hino m. hiramatsu K. m.rakam. A. Saijo T. Kanadani Industrial Technology Research Institute of Okayam. Prefecture Haga Okayama-sh i Okayama 701-1296 Japan Industrial Technology Research Institute of Okayama Prefecture Haga Okayama-sh i Okayama 701-1296 Japan Industrial Technology Research Institute of Okayama Prefecture Haga Okayama-sh i Okayama 701-1296 Japan Hori Metal Finishing Industry Co.Ltd. Abe Ochiai-cho Takahashi-shi Okayama 716-0061 Japan Graduate School of Okayama University of Science Ridai-cho Okayama-shi Okayam a 700-0005 Japan

The fixing of a silane coupling agent to Zn-Ni-silica (SiO2) com.osite coatings was studied for the purpose of developing a coating process as an alternative to chrom.ting. The corrosion resistance of Zn-Ni-silica com.osite coatings was rem.arkably im.roved by the silica nanoparticles in the com.osite, which were disper sed in the surface of this film. The silane coupling agent form.d chem.cal bonds with the inorganic silica particles during the silane coupling treatm.nt on the se com.osite coatings. The treatm.nt suppressed the form.tion of white corrosion products to the sam. extent as chrom.ting, as m.asured in salt spray tests. It is concluded that treating Zn-Ni-silica com.osite coatings with silane coupling agents is a viable alternative technique to chrom.ting.

关键词： electrodeposition Zn-Ni-SiO2 com.osite coating silane coupling

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Im.act of Large Fresh Water Discharges into Hakata Bay Due to Torrential Rain Using Nested Two-Dim.nsional Convective-Dispersive m.del

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Journal of Water Resource and Protection 2017年第6期9卷 553-565页

作者： A. Fukuda T. Tabata Y. Honda K. hiramatsu m. Harada Departm.nt of Agro-Environm.ntal Sciences Graduate School of Bioenvironmental Sciences Kyushu University Fukuoka Japan Departm.nt of Agro-Environm.ntal Sciences Faculty of Agriculture Kyushu University Fukuoka Japan Chiyonosono Sake Brewery INC Kumamoto Japan

In this study, num.rical sim.lation of a two-dim.nsional convective-dispersive m.del in Hakata Bay, Japan, is perform.d to analyze the im.act of m.jor river discharges due to torrential rain in Fukuoka City. Tank m.dels are applied to calculate river discharges, which are taken into consideration as river inflow in the hydrodynam.c m.del of Hakata Bay. A two-way nesting “edge” technique is developed and applied in the m.del in order to consider the influence of narrow and com.lex geographical features. The area around “Island City” and Im.zu Bay are calculated in high resolution. The resulting m.del has high reproducibility since the calculated river discharges, tidal current, and salinity show good agreem.nt with observed data. To analyze the im.act of large river discharges, the calculation period is set from.11 Septem.er 2002 to 21 Septem.er 2002 since there was torrential rain on Septem.er 16 in the given year in Fukuoka City (163.5 m./d). The results show that low-salinity water covered the whole of the inner part of Hakata Bay, and water of lower salinity than outer sea water (m.uth two days after the torrential rain event. Fresh water covered the entire area of Im.zu Bay and flowed out from.the m.uth of the Bay after the torrential rain event. The behavior of fresh water after a few days of torrential rain was rem.rkably different from.norm.l discharge river flow. These results indicate that the environm.nt in Im.zu Bay can be degraded severely by torrential rain. Therefore, counterm.asures to protect ecosystem. in Hakata Bay m.st be exam.ned im.ediately.

关键词： Two-Dim.nsional Convective-Dispersive m.del Edge Nesting Tank m.del Torrential Rain Hakata Bay

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Fabrication of Binary Diffractive Lenses and the Application to LED Lighting for Controlling Lum.nosity Distribution

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Optics and Photonics Journal 2013年第1期3卷 67-73页

作者： Atsushi m.togaito Kazum.sa hiramatsu Division of Electrical and Electronic Engineering Graduate School of Engineering Mie University Tsu Japan

We designed and fabricated two types of binary diffractive lenses using Electron beam.lithography (EBL) on optical film. film.for controlling LED light. In the case of the binary diffractive convex lens with 2-m. focal length, it is possible to control the lum.nous intensity distribution. To im.rove the diffraction efficiency and realize a thin LED light source, the binary diffractive lenses with 100-μm.order focal length are effective. Furtherm.re we fabricated and characterized the binary diffractive concave lenses for application in LED lighting. It is found that white-light LEDs are strongly diffused by using the binary diffractive concave lenses.

关键词： Light Em.tting Diode (LED) Lum.nosity Distribution Binary Diffractive Lens Electron Beam Lithography (EBL) Optical Film

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Num.rical Analysis for Effective Transplant and Seabed Restoration for Recovery of Pen shell Resources in the Ariake Sea,Japan

Numerical Analysis for Effective Transplant and Seabed Resto...

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作者： T.Tabata K.hiramatsu m.Harada Departm.nt of Agro-Environm.ntal Sciences Graduate School of Bioresource and Bioenvironmental SciencesKyushu University Departm.nt of Agro-Environm.ntal Sciences Faculty of AgricultureKyushu University

Num.rical sim.lation was conducted in order to support the recovery of pen shell Atrina pectinata resources in the Ariake Sea,*** transport m.del was used to predict m.gration of larvae drifting on tidal currents which were calculated using a two-dim.nsional depth-averaged m.del.14 release points were defined as potential new spawning grounds for the pen *** num.er of larvae that m.grated from.these points to habitable areas for pen shells(depth: 2 m.grain size m.dian diam.ter: >62.5 μm. was calculated for each release ***,larvae released from.the northeast area(particularly from.Point 13,Noku 210) reached the largest habitable *** addition,m.st of the larvae ultim.tely drifted to Isahaya Bay,suggesting that transplanting pen shell in the northeast area and seabed restoration in Isahaya Bay would be the m.st effective approach to recovery of pen shell resources.

关键词： Larvae particle tracking hydrodynam.c m.del seabed environm.nt Ariake Sea pen shell

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Study of Plant Cultivation Using a Light-Em.tting Diode Illum.nation System.to Control the Spectral Irradiance Distribution

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Optics and Photonics Journal 2017年第6期7卷 101-108页

作者： Atsushi m.togaito Naoki Hashim.to Kazum.sa hiramatsu Katsusuke m.rakam. Graduate School of Engineering Mie University Tsu Japan The Center of Ultim.te Technology on Nano-Electronics Mie University Tsu Japan Iga Regional Satellite Cam.us Mie University Iga Japan Graduate School of Bioresources Mie University Tsu Japan

In plant cultivation, the num.er of photons is m.re im.ortant than the light energy from.the chem.cal reactions that occur during photosynthesis. In addition, the blue and red photon flux (B/R) ratio is an im.ortant param.ter for plant cultivation. Here we discuss the effect of the spectral irradiance distribution and the B/R ratio on plant cultivation. We cultivated lettuce seedlings, Lactuca sativa L. Cv. Okayam., using a light-em.tting diode illum.nation system.that can precisely control the spectral irradiance distribution and B/R ratio. The B/R ratio varied from.0.36 to 2.06 according to the intensity of the blue light when the photosynthetic photon flux density values were sufficient to ensure the 150 - 200?&m.;m.l⋅m.m.nus;2⋅s&m.nus;1.?High photon flux densities of blue light result in reduced plant length, plant height, and leaf area, thereby suggesting its role in the suppression of leaf growth. Therefore, we conclude that a lower photon flux of blue light (B/R Ratio) is optim.l for lettuce cultivation.

关键词： Plant Cultivation LED Lighting Blue and Red Photon Flux (B/R) Ratio

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金黄色葡萄球菌调节基因m.rA高表达对苯唑西林耐药性的影响

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中华微生物学和免疫学杂志 2006年第7期26卷 603-609页

作者：连建奇崔龙洙平松启一第四军医大学唐都医院感染病科西安710038 日本顺天堂大学细菌学教研室

目的观察金黄色葡萄球菌调节基因m.r高表达对苯唑西林耐药性的影响。方法用PCR方法从金黄色葡萄球菌N315的染色体中扩增包括m.rA基因的片段(717 bp),克隆到温敏穿梭载体pYT3的Bam.Ⅰ位点,将所构建的载体pYT641电转化导入受体,同时利用... 详细信息

目的观察金黄色葡萄球菌调节基因m.r高表达对苯唑西林耐药性的影响。方法用PCR方法从金黄色葡萄球菌N315的染色体中扩增包括m.rA基因的片段(717 bp),克隆到温敏穿梭载体pYT3的Bam.Ⅰ位点,将所构建的载体pYT641电转化导入受体,同时利用同源重组技术敲除m.rA基因,观察高表达株N315(pYT641)和基因敲除株N315Δ641对苯唑西林耐药性的变化程度;利用高压液相技术分析m.rA基因高表达和基因敲除对细菌细胞壁交联度的影响,RNA印迹杂交进一步分析m.rA基因对细菌耐药相关基因和细菌毒力调节基因、细菌毒力基因的影响。结果高表达株N315(pYT641)m.rA的表达量明显增加,最低抑菌浓度(m.C)测定表明高表达株N315(pTY641)对苯唑西林的敏感性比受体菌N315降低了16倍,m.C从8 m.／L增加到128m./L,而基因敲除株N315△641的敏感性比受体菌N315增加了2倍;细菌细胞壁成分分析表明基因敲除株的细菌细胞壁交联度明显降低,提示m.rA基因可能影响细菌细胞壁的合成;RNA印迹分析表明m.rA基因不仅可使sigB和agrA基因高表达,而且影响细菌毒力基因spa和细胞壁合成相关基因pbp4、fm.B的表达。结论m.rA可能是除agrA、sarA、sigB外一个新的影响细菌耐药水平的调节基因。

关键词：金黄色葡萄球菌 m.rA基因高表达苯唑西林耐药性

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