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Characterization and source identification of fine particulate matter in the atmosphere of downtown Shanghai using μ-SXRF and ICP-MS

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Nuclear Science and Techniques 2010年第4期21卷 197-203页

作者： Akram Waheeda ZHU Yan TAN Mingguang BAO Liangman ZHANG Guilin LI Yan atsuo iida LI Xiaolin Shanghai Institute qf Applied Physics Chinese Academy of Sciences Shanghai 201800 China Photon Factory High Energy Accelerator Research Organization 1-10-ho Tsukuba lbaraki 305 Japan

To investigate the characteristic and sources of the fine particulate matter(PM2.5),and the major sources affecting particulate air pollution in Shanghai,China,the individual aerosol particles were analyzed using the synchrotron radiation micro-beam X-ray fluorescence analysis(?-SXRF),and the PM2.5 multi-elements were determined by the inductively coupled plasma mass spectrometer(ICP-MS).The results show that the mass concentration and chemical elements have seasonal variation,and the enrichment factors show that the chemical elements in the inhalable particles could come from the earth crust and anthropogenic *** extent of metal pollution was assessed by comparing the measured concentrations with those reported in the *** categories of PM2.5 pollution sources identified at the center of Shanghai show that the vehicle exhaust,emission of metallurgic industry and coal combustion are important.

关键词： SXRF 细颗粒物 ICP 来源识别城区大气上海电感耦合等离子体质谱仪 MS

Inverse relationship between platelet Akt activity and hippocampal atrophy:A pilot case-control study in patients with diabetes mellitus

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World Journal of Clinical Cases 2024年第2期12卷 302-313页

作者： Haruhiko Tokuda Takamitsu Hori Daisuke Mizutani Tomoyuki Hioki Kumi Kojima Takashi Onuma Yukiko Enomoto Tomoaki Doi Rie Matsushima-Nishiwaki Shinji Ogura Hiroki iida Toru Iwama Takashi Sakurai Osamu Kozawa Department of Metabolic Research Research InstituteNational Center for Geriatrics and GerontologyObu 474-8511Japan Department of Clinical Laboratory National Center for Geriatrics and GerontologyObu 474-8511Japan Department of Pharmacology Gifu University Graduate School of MedicineGifu 501-1194Japan Department of Neurosurgery Gifu University Graduate School of MedicineGifu 501-1194Japan Department of Dermatology Central Japan International Medical CenterMinokamo 505-8510Japan Department of Anesthesiology and Pain Medicine Gifu University Graduate School of MedicineGifu 501-1194Japan Department of Emergency Medicine Faculty of MedicineUniversity of ToyamaToyama 930-0194Japan Department of Emergency and Disaster Medicine Gifu University Graduate School of MedicineGifu 501-1194Japan Research Institute National Center for Geriatrics and GerontologyObu 474-8511Japan

BACKGROUND Akt plays diverse roles in *** is involved in the pathogenesis of type 2 diabetes mellitus(T2DM),which is caused by insulin *** also plays a vital role in human platelet ***,the hippocampus is closely associated with memory and learning,and a decrease in hippocampal volume is reportedly associated with an insulin-resistant phenotype in T2DM patients without *** To investigate the relationship between Akt phosphorylation in unstimulated platelets and the hippocampal volume in T2DM *** Platelet-rich plasma(PRP)was prepared from the venous blood of patients with T2DM or age-matched *** pellet lysate of the centrifuged PRP was subjected to western blotting to analyse the phosphorylation of Akt,p38 mitogen-activated protein(MAP)kinase and glyceraldehyde 3-phosphate dehydrogenase(GAPDH).Phosphorylation levels were quantified by densitometric *** volume was analysed using a voxel-based specific regional analysis system for Alzheimer’s disease on magnetic resonance imaging,which proposes the Z-score as a parameter that reflects hippocampal *** The levels of phosphorylated Akt corrected with phosphorylated p38 MAP kinase were inversely correlated with the Z-scores in the T2DM subjects,whereas the levels of phosphorylated Akt corrected with GAPDH were ***,this relationship was not observed in the control *** These results suggest that an inverse relationship may exist between platelet Akt activation and hippocampal atrophy in T2DM *** findings provide insight into the molecular mechanisms underlying T2DM hippocampal atrophy.

关键词： Akt Platelet Hippocampal atrophy Magnetic resonance imaging Diabetes mellitus

Long-term survival of the Sister Mary Joseph nodule originating from breast cancer:A case report

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World Journal of Clinical Cases 2023年第34期11卷 8205-8211页

作者： Koji Kanayama Maki Tanioka Yoshitsugu Hattori Takuya iida Mutsumi Okazaki Department of Plastic and Reconstructive Surgery The University of TokyoTokyo 113-8655Japan Department of Medical Oncology National Cancer Center HospitalTokyo 104-0045Japan

BACKGROUND A Sister Mary Joseph nodule(SMJN)is an uncommon cutaneous metastasis found in the umbilicus,indicating an advanced *** typically originate from intra-abdominal sources,rarely from breast *** suggests a poor prognosis with a median survival of approximately 8 mo after *** patients with SMJNs is challenging,as most receive limited palliative care *** optimal strategy for long-term survival of these patients remains *** SUMMARY A 58-year-old female,previously diagnosed with right breast cancer 17 years ago and underwent breast-conserving surgery,adjuvant radiotherapy,and endocrine therapy,presented with a 2-cm umbilical *** years previously,metastases were detected in the right supraclavicular,infraclavicular,hilar,and mediastinal lymph *** umbilical nodule emerged four years before the date of presentation,confirmed as a skin metastasis of primary breast cancer upon excisional *** initial removal,the nodule recurred and grew,leading to her referral to our *** patient underwent extensive excision of the umbilical tumor and immediate abdominal wall *** therapy was continued *** years later,no local recurrence was observed,and the patient continued to work full-time,achieving over 9 years of survival following SMJN *** This case study aimed to identify the optimal strategy for achieving extended survival outcomes in patients with SMJN through comprehensive *** presented a case of the longest survival in a patient after undergoing a multidisciplinary treatment *** findings underscore the significance of adopting a multimodal treatment approach comprising timely and wide excision along with adjunctive *** approach can control the disease,prolong survival,and improve the quality of life in patients with SMJN.

关键词： Sister Mary Joseph nodule Breast cancer Cutaneous metastasis Long-term survival Abdominal wall reconstruction Case report

Negative refraction of deep water waves through water channel network

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Journal of Hydrodynamics 2019年第4期31卷 840-847页

作者： Takahito iida Masashi Kashiwagi Department of Naval Architecture and Ocean Engineering Osaka University Suita Osaka 5650871 Japan Research Fellow of Japan Society for the Promotion of Science Chiyoda-ku Tokyo 1020083 Japan

A design method of a negative refractive index for free surface water waves in deep water is presented. To obtain a condition of a negative index, an analogy between water waves in a water channel and electric waves in an electric circuit is employed. An analytical solution of waves around a periodic array of rectangular columns is obtained by a circuit analysis. Attention is not focused on columns but a space among columns, and then the space is regarded as the water channel. Therefore, the circuit analysis can be applied to water waves. One channel is treated as a unit structure and a number of channels are periodically cascaded as a network. The negative refraction and backward waves by a network of the water channels are shown. Since the negative refraction might occur even around simple periodic structures, it is meaningful to understand wave phenomenon around offshore structures and develop innovative technology.

关键词： Negative refractive index backward wave water channel network equivalent circuit deep water

Electron transfer governed by light-matter interaction at metal-semiconductor interface

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npj Computational Materials 2020年第1期6卷 1628-1635页

作者： Kenji iida Masashi Noda Department of Theoretical and Computational Molecular Science Institute for Molecular ScienceMyodaijiOkazaki 444-8585Japan Center for Computational Sciences University of Tsukuba1-1-1 TennodaiTsukuba 305-8577Japan

The photoexcitation of heterostructures consisting of metallic nanoclusters and a semiconductor has been extensively investigated in relation to interests in photocatalysis and optical *** optoelectronic functions of the heterostructures originate from localized surface plasmon resonance,which can induce electron and resonance energy *** it is well known that photoinduced electronic interaction between a metallic nanocluster and a semiconductor is responsible for the resonance energy transfer,the electron transfer associated with the photoinduced electronic interaction has not been *** this paper,we elucidate the photoexcitation dynamics of a silver nanocluster/TiO_(2) heterostructure using an original first-principles computational approach that explicitly deals with light–matter *** is shown that the photoinduced silver–TiO_(2) electronic interaction causes excited electrons to be directly transferred from the silver nanocluster to the TiO2 layer without passing through the conduction band of the silver nanocluster.

关键词： silver interaction transfer

Ultrasmall and ultradense InGaN-based RGB monochromatic micro-light-emitting diode arrays by pixilation of conductive p-GaN

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Photonics Research 2021年第12期9卷 2429-2434页

作者： ZHE ZHUANG DAISUKE iida KAZUHIRO OHKAWA Computer Electrical and Mathematical Sciences and Engineering(CEMSE)DivisionKing Abdullah University of Science and Technology(KAUST)Thuwal 23955-6900Saudi Arabia

We describe 5μm squircle InGaN-based red,green,and blue(RGB)monochromatic micro-light-emitting diodes(μLEDs)with an interpitch of 4μm by pixilation of conductive p-GaN using a H2-plasma *** p-GaN was passivated by H2 plasma and prevented the current’s injection into the InGaN quantum wells *** observed that InGaN-based redμLEDs exhibited a broader full width at half-maximum and larger peak wavelength blueshift at 11.5-115 A/cm^(2) than the green/blueμ*** on-wafer light output power density of the redμLEDs at a wavelength of 632 nm at 115 A/cm^(2) was approximately 936 mW/cm^(2),the highest value reported thus far for InGaN-based redμ*** value was comparable with that of the green/blueμLEDs at 11.5 A/cm^(2),indicating that the redμLEDs can satisfy the requirement of high brightness levels for specific *** color gamut based on InGaN RGBμLEDs covered 83.7%to 75.9%of the Rec.2020 color space in the CIE 1931 diagram at 11.5 to 115 A/cm^(2).

关键词： diode conductive light

Hydrogen technologies and developments in Japan

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Clean Energy 2019年第2期3卷 105-113页

作者： Shigeki iida Ko Sakata Director The Institute of Applied Energy Executive Research Fellow The Institute of Applied Energy

The successful development of hydrogen-energy technologies has several advantages and ***-energy development could prevent global warming as well as ensure energy security for countries without adequate energy *** successful development of hydrogen would provide energy for transportation and electric *** is a unique energy carrier,as it can be produced from various energy sources such as wind,fossil fuels and biomass and,when it is combusted,it emits no CO_(2)*** other advantage is the wide distribution of resources globally that can be used to produce *** Japan,the Ministry of Economy,Trade and Industry(METI)published a‘Strategic Roadmap for Hydrogen and Fuel Cells’in 2014,with a revised update published in March *** goal of the roadmap is to achieve a hydrogen *** roadmap aims to resolve technical problems and secure economic *** roadmap has been organized into the following three phases:Phase 1-Installation of fuel cells;Phase 2-Hydrogen power plant/mass supply chain;Phase 3-CO_(2)-free *** paper reports on the current status of fuel cells and fuel-cell vehicles in Japan and gives a description and status of the R&D programmes along with the results of global energy model study towards 2050.

关键词： hydrogen and fuel cell energy system and policy energy and environment energy storage

630-nm red InGaN micro-light-emitting diodes(<20μm×20μm)exceeding 1 mW/mm~2 for full-color micro-displays

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Photonics Research 2021年第9期9卷 1796-1802页

作者： ZHE ZHUANG DAISUKE iida MARTIN VELAZQUEZ-RIZO KAZUHIRO OHKAWA Computer Electrical and Mathematical Sciences and Engineering(CEMSE)DivisionKing Abdullah University of Science and Technology(KAUST)Thuwal 23955-6900Saudi Arabia

We demonstrated 10×10 arrays of In Ga N 17μm×17μm micro-light-emitting diodes(μLEDs)with a peak wavelength from 662 to 630 nm at 10–50 A∕cm^(2).The on-wafer external quantum efficiency reached 0.18%at 50 A∕cm^(2).The output power density of the redμLEDs was obtained as 1.76 m W∕mm^(2),which was estimated to be higher than that of 20μm×20μm Al In Ga P redμLEDs(~630 nm).Finally,we demonstrate that In Ga N red/green/blueμLEDs could exhibit a wide color gamut covering 81.3%and 79.1%of the Rec.2020 color space in CIE 1931 and 1976 diagrams,respectively.

关键词： diodes emitting arrays

Multilinear Fractional Integrals on Morrey Spaces

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Acta Mathematica Sinica,English Series 2012年第7期28卷 1375-1384页

作者： Takeshi iida Enji SATO Yoshihiro SAWANO Hitoshi TANAKA Department of Mathematical Sciences Faculty of ScienceYamagata University Department of Mathematics Kyoto University Graduate School of Mathematical Sciences The University of Tokyo

In the present paper we obtain and extend the boundedness property of the Adams type for multilinear fractional integral operators. Also, we deal with the Olsen type inequality.

关键词： Multilinear fractional integral operators Morrey spaces