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GHz带宽的双异质波导InGaAsP/InP光调制器/开关

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半导体光电 1985年第2期 97-98页

作者： m.fujiwara 李全臻

本文提出并证明了一种新型的双异质平凸波导InGaAsP/InP电一光定向耦合调制器/开关。这种调制器/开关适合于单片集成光学。所制造的器件在1.3μm波长下具有低的光损耗(4dB/cm)和高的调制带宽(1GHz)。

关键词：调制器 EDC 波导馈电设备 InGaAsP/InP 调制带宽异质

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模糊带色成色剂

感光材料 1991年第1期 9-13页

作者： F.lshü T.Uchida m.fujiwara T.Nimura 刘春艳

在常规卤化银彩色负片中,广泛使用带色成色剂是为了得到良好的彩色还原。其原理是,利用带色成色剂修正不理想染料影像的吸收。带色成色荆也可用来改善基本影像质量——清晰度。带色成色剂的模糊蒙片作用与边缘效应一样,可使胶片的清晰... 详细信息

在常规卤化银彩色负片中,广泛使用带色成色剂是为了得到良好的彩色还原。其原理是,利用带色成色剂修正不理想染料影像的吸收。带色成色荆也可用来改善基本影像质量——清晰度。带色成色剂的模糊蒙片作用与边缘效应一样,可使胶片的清晰度得到改善。

关键词：成色剂带色成色剂模糊蒙片

meV-and Sub-meV-photon Sources Based on Compton Backscattering at SPring-8 and KPSI-JAEA

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原子核物理评论 2009年第S1期26卷 94-99页

作者： K.Kawase m.Kando T.Hayakawa I.Daito S.Kondo T.Homma T.Kameshima H.Kotaki Y.Fukuda A.Faenov T.Shizuma S.V.Bulanov T.Kimura T.Tajima m.Shoji S.Suzuki K.Tamura H.Ohkuma Y.Arimoto T.Yorita m.fujiwara S.Okajima Kansai Photon Science Institute Japan Atomic Energy Agency Japan Synchrotron Radiation Research Institute Department of Physics Osaka University Research Center for Nuclear Physics Osaka University

Recently we have constructed two facilities for generating photon beams in the meV and sub-meV energy regions by means of the Compton backscattering with a laser and an electron beam at SPring-8 and at Kansai Photon Science Institute of Japan Atomic Energy Agency(KPSI-JAEA). The meV-photon source at SPring-8 consists of a continuous-wave optically-pumped far infrared laser with a wavelength of 118.8 μm and an 8 GeV stored electron beam. Present meV-photon flux is estimated to be 1.3×103 photons/s. On the other hand,the sub-meV-photon source at KPSI-JAEA consists of a pulse Nd∶YAG laser with a wavelength of 1 064 nm and a 150 meV electron beam accelerated by microtron. In the first trial of the photon production in this source,backscattered photon flux is estimated to be 20 photons/pulse. Both the Compton backscattered photon sources have possibilities to be used for new tools in various fields such as nuclear physics,materials science,and astronomy.

关键词： laser Compton backscattering polarized γ-ray polarized X-ray

人工光照条件下气温对甘薯单节插条营养繁殖叶片生长发育的影响

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国外作物育种 2004年第5期23卷 29-29页

作者： m.fujiwara 向平

本试验在23、26、29、32和35℃等5种气温条件下研究了甘薯单节插条再生植株的第一批可收获繁殖体的成长天数(CO)、可收获繁殖体的成长率(r)和每株可收获繁殖体数(N)。单节插条包括1片未展开叶。估计了3种不同叶片长度类型的第一批可收... 详细信息

本试验在23、26、29、32和35℃等5种气温条件下研究了甘薯单节插条再生植株的第一批可收获繁殖体的成长天数(CO)、可收获繁殖体的成长率(r)和每株可收获繁殖体数(N)。单节插条包括1片未展开叶。估计了3种不同叶片长度类型的第一批可收获繁殖体成长天数、可收获繁殖体成长率和每株可收获繁殖体数。在10天的试验期间。

关键词：插条收获甘薯叶片生长人工光照营养繁殖繁殖体发育再生植株

评估CT结肠成像的辐射剂量和影像质量:低剂量CT迭代重建和常规剂量CT滤过反投影重建的对比研究

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国际医学放射学杂志 2015年第2期 193-193页

作者： K.Nagata m.fujiwara H.Kanazawa T.mogi N.Iida T.mitsushima 卢忠飞 Department of Radiology Kameda Medical Center 929 Higashi-cho Kamogawa Chiba 296-8602 Japan

摘要目的前瞻性对比分析研究低剂量CT结肠成像(CTC)采用不同水平的迭代重建技术与常规剂量CTC采用滤过反投影重建技术,评估两者的辐射剂量和影像质量。方法

关键词：影像质量投影重建结肠成像常规剂量低剂量迭代重建滤过 CT

Reaction of Silane Alkoxide with Acid Anhydride as a Novel Synthetic method for Organic-Inorganic Hybrid materials

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复旦学报（自然科学版） 2005年第5期44卷 682-683页

作者： masahiro fujiwara Kansai Center National Institute of Advanced Industrial Science and Technology Ikeda Osaka 563-8577 Japan

Sol-gel method is a potent method to produce new inorganic and organic-inorganic hybrid materials. The key step of this methodology is the hydrolysis of a metal alkoxide or other metal substrates such as acetylacetonates to form hydroxyl metal species, followed by their condensation to metal-oxygen-metal (m - O - m)bonds. In this process, the utilization of water, generally in excess, is essential and alcoholic solvents such as ethanol are often required to homogenize the solution when organic compounds coexist. As the common sol-gel method using water allows for limited uses of organic substrates due to their low solubility and stability in aqueous solution, modified variations of sol-gel method are required. Recently, some processes were reported for preparing metal oxides from metal alkoxides without the utilization of water.

关键词：硅石硅烷醇盐酸酐合成方法分子结构

Preparation of High Performance Foamed Concrete from Cement,Sand and mineral Admixtures

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Journal of Wuhan University of Technology(materials Science) 2007年第2期22卷 295-298页

作者：潘志华 fujiwara Hiromi Wee Tionghuan College of materials Science & Engineering Nanjing University of Technology Faculty of Engineering Utsunomiya University7-1-2YotoUtsunomiyacity Department of Civil Engineering National University of Singapore

The titled high performance foamed concrete was developed from Portland cement, ultra fine granulated blast-furnace slag, pulverized fly ash and condensed silica fume by means of pre-foaming process. The resultant foamed concrete presents its thermal conductivity of about 0.16-0.75 W/（m·℃） and 28 d compressive strength of about 1.1-23.7 mPa when its mix proportion varies in the range of cement content 280 kg-650 kg/m^3, fly ash 42-97 kg/m^3, slag 64-146 kg/m^3, silica fume 34-78 kg/m^3, and sand 0-920 kg/m^3. The compressive strength of the foamed concrete with oven dried bulk density of 1500 kg/m^3 in appropriate mix proportion and with small amount of superplasticizer reached as high as 44.1 mPa. meanwhile, the flesh foamed concrete behaves like an excellent flow-ability, therefore, is especially suitable for the application in case of massive foamed concrete casting in situ and in the case of filling casting into large volume underground irregular voids, except for pre-casting of building components like blocks, bricks, and wall panels.

关键词： foamed concrete density compressive strength thermal conductivity

Throughfall and stemflow chemical dynamics of Satoyama, a traditional secondary forest system under threat in Japan

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Journal of Forestry Research 2022年第3期33卷 813-826页

作者： Satoshi Asaoka Fuyuhiko Sumikawa Yoshifumi Watanabe Waqar Azeem Jadoon masaki Ohno Nobumichi Shutoh Yuki Wakamatsu Lawrence m.Liao Akane Kanazawa Yuka Sato Natsumi fujiwara Graduate School of Integrated Sciences for Life Hiroshima University1-4-4 KagamiyamaHigashi-Hiroshima739-8528Japan Research Center for Inland Seas Kobe University5-1-1 FukaeminamiHigashinadaKobe658-0022Japan Naragakuen Senior High School 430 YamadaYamatokoriyamaNara639-1093Japan Department of Environmental Sciences Faculty of Natural and Computational SciencesHazara UniversityDhodiaMansehra21130Khyber PakhtunkhwaPakistan Niigata University of Pharmacy and Applied Life Sciences 265-1 HigashijimaAkihaNiigata956-8603Japan Faculty of Science and Engineering Kindai University3-4-1 KowakaeHigashi-OsakaOsaka577-8502Japan Department of maritime Science and Technology Japan Coast Guard Academy5 WakabaKureHiroshima737-8512Japan

The term 'Satoyama' refers to traditional and unique secondary forests in Japan that occupy intermediate zones between villages ('sato') and hills or mountains ('yama'). Satoyama landscapes help sustain ecosystem services and the diversity of secondary natural environments. As Japan relies more heavily on foreign timber imports, the traditional role of Satoyama in providing forest products has diminished, and this has led to their abandonment and poor management. The chemical behavior of cations, anions, and dissolved organic matter in throughfall and stemflow from one such threatened Satoyama system in central Japan was investigated. From autumn to winter, the atmospheric deposition of sulfates and nitrates was 2.5–6.0 times higher compared to the amounts in summer due to the intrusion of air masses from the Asian continent. The dissolved organic matter in the throughfall and stemflow was composed mainly of humic substances and protein derivatives. The deposition fluxes of dissolved organic carbon from throughfall (7.31–10.1 g m^(−2) a^(−1)) and stemflow (1.79–3.84 g m^(−2) a^(−1)) in this study were within ranges seen in temperate forests in previous studies. The deposition flux of sulfates was low compared to that in other forest types because canopy interaction was lower, suggesting higher canopy openness than in primary forests. If a shift from a mixed species Satoyama forest to a conifer-dominated forest occurs after the mass mortality of oak, the deposition flux of dissolved organic carbon and K^(+) might decrease by 33% and 62%, respectively, while NO_(3)^(−) might increase by 20%. In the near future, the degradation of Satoyama landscapes might change the levels of dissolved organic carbon and nitrogen loads, resulting in imbalances in river-ocean linkages affecting forested catchments and aquatic ecosystems in Japan.

关键词： Atmospheric deposition Dissolved organic matter Humic substance mass mortality Oak trees Sustainable development goals

Comparative visual analytics for assessing medical records with sequence embedding

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Visual Informatics 2020年第2期4卷 72-85页

作者： Rongchen Guo Takanori fujiwara Yiran Li Kelly m.Lima Soman Sen Nam K.Tran Kwan-Liu ma Department of Computer Science Beihang UniversityBeijingChina Department of Computer Science University of CaliforniaDavisUnited States Department of Pathology and Laboratory medicine University of CaliforniaDavisUnited States Department of Surgery University of CaliforniaDavisUnited States

machine learning for data-driven diagnosis has been actively studied in medicine to provide better *** analysis of a patient cohort similar to a patient under treatment is a key task for clinicians to make decisions with high ***,such analysis is not straightforward due to the characteristics of medical records:high dimensionality,irregularity in time,and *** address this challenge,we introduce a method for similarity calculation of medical *** method employs event and sequence *** we use an autoencoder for the event embedding,we apply its variant with the self-attention mechanism for the sequence ***,in order to better handle the irregularity of data,we enhance the self-attention mechanism with consideration of different time *** have developed a visual analytics system to support comparative studies of patient *** make a comparison of sequences with different lengths easier,our system incorporates a sequence alignment *** its interactive interface,the user can quickly identify patients of interest and conveniently review both the temporal and multivariate aspects of the patient *** demonstrate the effectiveness of our design and system with case studies using a real-world dataset from the neonatal intensive care unit of UC Davis.

关键词： Electronic medical records Event sequence data Autoencoder Self-attention Sequence similarity Visual analytics