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ELECTROPLATED Zn-Ni-SiO_(2) COmPOSITE COATINGS TREATED WITH A SILANE COUPLING AGENT TO REPLACE CHROmATING

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

作者： m.Hino m.hiramatsu K.murakami A.Saijo T.Kanadani Industrial Technology Research Institute of Okayama Prefecture HagaOkayama-sh iOkayama 701-1296Japan Hori metal Finishing Industry Co. Ltd.AbeOchiai-choTakahashi-shiOkayama 716-0061Japan Graduate School of Okayama University of Science Ridai-choOkayama-shiOkayam a 700-0005Japan

The fixing of a silane coupling agent to Zn-Ni-silica(SiO_(2))composite coatings was studied for the purpose of developing a coating process as an alternative to *** corrosion resistance of Zn-Ni-silica composite coatings was rem arkably improved by the silica nanoparticles in the composite,which were disper sed in the surface of this *** silane coupling agent formed chemical bonds with the inorganic silica particles during the silane coupling treatment on the se composite *** treatment suppressed the formation of white corrosion products to the same extent as chromating,as measured in salt spray *** is concluded that treating Zn-Ni-silica composite coatings with silane coupling agents is a viable alternative technique to chromating.

关键词： electrodeposition Zn-Ni-SiO_(2)composite coating silane coupling reatment chrome-free environmental friendlines

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ENVIRONmENTAL FRIENDLY ANODIZING ON AZ91D mAGNESIUm ALLOYS AND COATING CHARACTERISTICS

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

作者： A. Saijo m. Hino m. hiramatsu T. Kanadani Hori metal 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 environmental friendly anodizing treatment (Anomag) from a phosphate-based so lution without heavy metals on AZ91D magnesium alloy was studied. The characteri stics of the coatings, such as structure, composition and corrosion resistance w ere investigated. The effects of this anodizing treatment on the mechanical prop erties were examined. X-ray diffraction (XRD) analysis revealed that the structu re of the coatings is amorphous or glassy. In salt spray tests coatings with an average thickness of 10μm had an anticorrosive performance of over 1000 hours. Fatigue tests revealed that anodizing onto AZ91D magnesium alloy does not affect the fatigue strength. These results demonstrate the utility of this anodizing t reatment on magnesium alloy for application as a structural material, such as in the automotive field.

关键词： magnesium alloy anodizing environmental friendliness

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Fabrication of Binary Diffractive Lenses and the Application to LED Lighting for Controlling Luminosity Distribution

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

作者： Atsushi motogaito Kazumasa 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 films film for controlling LED light. In the case of the binary diffractive convex lens with 2-mm focal length, it is possible to control the luminous intensity distribution. To improve the diffraction efficiency and realize a thin LED light source, the binary diffractive lenses with 100-μm-order focal length are effective. Furthermore 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 Emitting Diode (LED) Luminosity Distribution Binary Diffractive Lens Electron Beam Lithography (EBL) Optical Film

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Numerical 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 Department of Agro-Environmental Sciences Graduate School of Bioresource and Bioenvironmental SciencesKyushu University Department of Agro-Environmental Sciences Faculty of AgricultureKyushu University

Numerical simulation was conducted in order to support the recovery of pen shell Atrina pectinata resources in the Ariake Sea,*** transport model was used to predict migration of larvae drifting on tidal currents which were calculated using a two-dimensional depth-averaged model.14 release points were defined as potential new spawning grounds for the pen *** number of larvae that migrated from these points to habitable areas for pen shells(depth: 2 m,grain size median diameter: >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,most of the larvae ultimately drifted to Isahaya Bay,suggesting that transplanting pen shell in the northeast area and seabed restoration in Isahaya Bay would be the most effective approach to recovery of pen shell resources.

关键词： Larvae particle tracking hydrodynamic model seabed environment Ariake Sea pen shell

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Impact of Large Fresh Water Discharges into Hakata Bay Due to Torrential Rain Using Nested Two-Dimensional Convective-Dispersive model

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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 Department of Agro-Environmental Sciences Graduate School of Bioenvironmental Sciences Kyushu University Fukuoka Japan Department of Agro-Environmental Sciences Faculty of Agriculture Kyushu University Fukuoka Japan Chiyonosono Sake Brewery INC Kumamoto Japan

In this study, numerical simulation of a two-dimensional convective-dispersive model in Hakata Bay, Japan, is performed to analyze the impact of major river discharges due to torrential rain in Fukuoka City. Tank models are applied to calculate river discharges, which are taken into consideration as river inflow in the hydrodynamic model of Hakata Bay. A two-way nesting “edge” technique is developed and applied in the model in order to consider the influence of narrow and complex geographical features. The area around “Island City” and Imazu Bay are calculated in high resolution. The resulting model has high reproducibility since the calculated river discharges, tidal current, and salinity show good agreement with observed data. To analyze the impact of large river discharges, the calculation period is set from 11 September 2002 to 21 September 2002 since there was torrential rain on September 16 in the given year in Fukuoka City (163.5 mm/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 (mouth two days after the torrential rain event. Fresh water covered the entire area of Imazu Bay and flowed out from the mouth of the Bay after the torrential rain event. The behavior of fresh water after a few days of torrential rain was remarkably different from normal discharge river flow. These results indicate that the environment in Imazu Bay can be degraded severely by torrential rain. Therefore, countermeasures to protect ecosystems in Hakata Bay must be examined immediately.

关键词： Two-Dimensional Convective-Dispersive model Edge Nesting Tank model Torrential Rain Hakata Bay

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Study of Plant Cultivation Using a Light-Emitting Diode Illumination 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 motogaito Naoki Hashimoto Kazumasa hiramatsu Katsusuke murakami Graduate School of Engineering Mie University Tsu Japan The Center of Ultimate Technology on Nano-Electronics Mie University Tsu Japan Iga Regional Satellite Campus Mie University Iga Japan Graduate School of Bioresources Mie University Tsu Japan

In plant cultivation, the number of photons is more important than the light energy from the chemical reactions that occur during photosynthesis. In addition, the blue and red photon flux (B/R) ratio is an important parameter 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. Okayama, using a light-emitting diode illumination 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?μmol⋅m−2⋅s−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 optimal 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mgrA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mgr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mgrA基因的片段(717 bp),克隆到温敏穿梭载体pYT3的BamHⅠ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mgr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mgrA基因的片段(717 bp),克隆到温敏穿梭载体pYT3的BamHⅠ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mgrA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mgrA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mgrA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)mgrA的表达量明显增加,最低抑菌浓度(mIC)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,mIC从8 mg／L增加到128mg/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mgrA基因可能影响细菌细胞壁的合成;RNA印迹分析表明mgrA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、fmtB的表达。结论mgrA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 mgrA基因高表达苯唑西林耐药性

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