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Study on Blade Surface Flow around Wind Turbine by Using LDV Measurements

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Journal of Thermal Science 2015年第2期24卷 131-139页

作者： Tinnapob Phengpom Yasunari Kamada Takao Maeda Junsuke Murata Shogo Nishimura Tasuku Matsuno Division of System Engineering Mie University Division of Mechanical Engineering Mie University

This paper has attempted to study a mechanism of three-dimensional flow around a horizontal axis wind turbine(HAWT) rotor blade. An experimental study of the flow phenomenon in the vicinity of the wind turbine blade is a challenging endeavor. In this research, the HAWT model with 2.4 m diameter was tested in the large wind tunnel. The flow around the rotating blade surface was measured simultaneously for three velocity components, and two probes were used for the synchronized measurement of three-dimensional flow components. The local velocity was detected for the single seeding particle measured in the point where three pairs of laser beams intersected. Blade sections of interest in this study are composed of radial positions r/R = 0.3, 0.5 and 0.7. Optimum and low tip speed ratio flow characteristics were also compared. The velocity flow vector, skin friction coefficient and bound circulation were calculated from LDV measurements, and the experimental research showed reasonably and clearly the experimental results.

关键词： LDV measurement Sectional performance Wind turbine Boundary layer flow Span-wise flow

Water purification with sintered porous materials fabricated at 400℃ from sea bottom sediments

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Journal of Environmental Sciences 2008年第2期20卷 172-176页

作者： DABWAN Ahmed H A IMAI Daizo KANECO Satoshi SENMATSU Isamu NAKAHAMA Katsuyuki KATSUMATA Hideyuki SUZUKI Tohru OHTA Kiyohisa mie Industry and Enterprise Support Center ShimaMie 517-0501Japan mie Industry and Enterprise Support Center ShimaMie 517-0501Japan Department of Chemistry for MaterialsGraduate School of EngineeringMie UniversityMie 514-8507Japan. Department of Chemistry for Materials Graduate School of EngineeringMie UniversityMie 514-8507Japan. Environmental Preservation Center Mie UniversityMie 514-8507Japan Department of Chemistry for Materials Graduate School of EngineeringMie UniversityMie 514-8507Japan. Environmental Preservation CenterMie UniversityMie 514-8507Japan

A sintering technology for preparing porous materials from sea bottom sediments was developed for use in water purification. The purpose of the present study was to develop methods for converting the sea bottom sediments dredged from Ago Bay into value-added recycled products. The sintered products fabricated at 400℃ were found to be very effective adsorbents for the removal of heavy metals.

关键词： sintering preparation technology porous materials sea bottom sediments water purification heavy metals

Enhanced hydrogen production from aqueous methanol solution using TiO2/Cu as photocatalysts

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Frontiers of Chemical Science and Engineering 2014年第2期8卷 197-202页

作者： Paramasivan GOMATHISANKAR Tomoko NODA Hideyuki KATSUMATA Tohru SUZUKI Satoshi KANECO Department of Chemistry for Materials Graduate School of Engineering Mie University Mie 514-8507 Japan Environmental Preservation Center Mie University Mie 514-8507 Japan

The photocatalytic hydrogen production from aqueous methanol solution using titanium dioxide （TiO2） was investigated in the addition of metal particles including copper, lead, tin, and zinc. The results show that only the addition of copper particles enhances the hydrogen production. The copper usage and reaction temperature were further optimized for TiO2/Cu photocatalyts. Under the optimal conditions, the hydrogen production using TiO2/Cu as photocatalysts is approxi- mately 68 times higher than that obtained with only TiO2.

关键词： photocatalytic hydrogen generation metha-nol copper particles TiO2 metal-semiconductor interface

Analysis of Aerodynamic Load on Straight-bladed Vertical Axis Wind Turbine

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Journal of Thermal Science 2014年第4期23卷 315-324页

作者： Qing’an LI Takao MAEDA Yasunari KAMADA Junsuke MURATA Toshiaki KAWABATA Kazuma FURUKAWA Division of System Engineering Mie University1577 Kurimamachiya-choTsuMie 514-8507JAPAN Division of Mechanical Engineering Mie University1577 Kurimamachiya-choTsuMie 514-8507JAPAN

This paper presents a wind tunnel experiment for the evaluation of energy performance and aerodynamic forces acting on a small straight-bladed vertical axis wind turbine(VAWT) depending on several values of tip speed ratio. In the present study, the wind turbine is a four-bladed VAWT. The test airfoil of blade is symmetry airfoil(NACA0021) with 32 pressure ports used for the pressure measurements on blade surface. Based on the pressure distributions which are acted on the surface of rotor blade measured during rotation by multiport pressure-scanner mounted on a hub, the power, tangential force, lift and drag coefficients which are obtained by pressure distribution are discussed as a function of azimuthally position. And then, the loads which are applied to the entire wind turbine are compared with the experiment data of pressure distribution. As a result, it is clarified that aerodynamic forces take maximum value when the blade is moving to upstream side, and become small and smooth at downstream side. The power and torque coefficients which are based on the pressure distribution are larger than that by torque meter.

关键词： Wind Turbine Wind Energy Straight-bladed VAWT Tip Speed Ratio Pressure Distribution

Degradation of Reactive Yellow 86 with photo-Fenton process driven by solar light

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Journal of Environmental Sciences 2010年第9期22卷 1455-1461页

作者： Hideyuki Katsumata Syunya Koike Satoshi Kaneco Tohru Suzuki Kiyohisa Ohta Department of Chemistry for Materials Graduate School of EngineeringMie UniversityTsu Environmental Preservation Center Mie UniversityTsu

The decolorization of Reactive Yellow 86 （RY 86）, one of reactive azo dyes, was investigated in the presence of Fenton reagent under solar light irradiation. The decolorization rate was strongly influenced by pH, initial concentrations of H202 and Fe（II）, and so on. An initial concentration of 40 mg/L was decolored more than 90% after 20 min under optimum conditions. The activation energy of the solar photo-Fenton reaction was 1.50 kJ/mol for RY 86 in the temperature range of 10-60℃. In the kinetic study, the rate constant of RY 86 with OH- radicals could be estimated to be 1.7 × 10^10 L/（***）. The decolorization efficiency of RY 86 under solar light irradiation was comparable to the artificial light irradiation. The decrease of TOC as a result of mineralization of RY 86 was observed during photo-Fenton process. The rate of RY 86 mineralization was about 83% under UV irradiation after 24 hr. The formation of chloride, sulfate, nitrate and ammonium ions as end-products was observed during the photocatalytic process. The decomposition of RY 86 gave two kinds of intermediate products. The degradation mechanism of RY 86 was proposed on the base of the identified intermediates.

关键词： reactive azo dye photo-Fenton reaction solar light irradiation decolorization mineralization

Complete withdrawal of glucocorticoids after dupilumab therapy in allergic bronchopulmonary aspergillosis:A case report

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World Journal of Clinical Cases 2021年第23期9卷 6922-6928页

作者： Tadashi Nishimura Tomohito Okano Masahiro Naito Chikashi Tsuji Soichi Iwanaka Yasumasa Sakakura Taro Yasuma Hajime Fujimoto Corina N D'Alessandro-Gabazza Yasuhiro Oomoto Tetsu Kobayashi Esteban C Gabazza Hidenori Ibata Department of Pulmonary Medicine Mie Chuo Medical CenterTsu 514-1101MieJapan Department of Pulmonary and Critical Care Medicine Mie UniversityTsu 514-8507MieJapan Department of Immunology Mie University School of MedicineMie UniversityTsu 514-8507MieJapan Department of Pulmonary and Critical Care Medicine Graduate School of Medicine MieMie UniversityTsu 514-8507MieJapan

BACKGROUND Allergic bronchopulmonary aspergillosis(ABPA)is an allergic reaction to Aspergillus species that aggravates bronchial *** studies demonstrated the glucocorticoid-sparing effect of dupilumab in patients with *** is no report of complete withdrawal of glucocorticoids after *** SUMMARY The patient was a 54-year-old woman with bronchial asthma treated with inhaled corticosteroids and a long-acting beta-2 *** consulted our institution for productive cough and fever in March *** computed tomography scan revealed mucoid impaction,and the bronchial lavage fluid culture was positive for Aspergillus *** diagnosis was *** patient was treated with oral glucocorticoids from April 2017 to November *** January 2019,she had bronchial asthma exacerbation,and a chest computed tomography scan showed recurrent mucoid *** was treated with oral glucocorticoids and *** February 2020,during tapering of oral glucocorticoid,she had the third episode of bronchial asthma exacerbation and a mucoid *** patient was treated with dupilumab in addition to oral glucocorticoid and *** clinical response improved,and oral glucocorticoid was discontinued in June *** This is the first case of ABPA in which complete withdrawal of glucocorticoid was possible after treatment with dupilumab.

关键词： Allergic bronchopulmonary aspergillosis Dupilumab Asthma Interleukin-13 Interleukin-4 Case report

Self-/conspecific discrimination and superparasitism strategy in the ovicidal parasitoid Echthrodelphax fairchildii （Hymenoptera： Dryinidae）

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Insect Science 2014年第6期21卷 741-749页

作者： Emi Ito Yoshihiro Y. Yamada Insect Ecology Laboratory Graduate School of Bioresources Mie University Tsu Mie Japan

Superparasitism in solitary parasitoids results in fatal competition between the immature parasitoids, and consequently only one individual can emerge. In the semisoli- tary ovicidal parasitoid Echthrodelphaxfairchildii （Hymenoptera： Dryinidae）, 2 adults can emerge under superparasitism with a short interval （〈24 h） between the first and second ovipositions. We determined the female parasitoid＇s behavioral responses under self- and conspecific superparasitism bouts with first-to-second oviposition intervals of 〈2 h. The self- and conspecific superparasitizing frequencies increased up to an oviposition interval of 0.75 h, with the former remaining lower than the latter, particularly for oviposition intervals of _〈0.25 h, suggesting the existence of self-/conspecific discrimination. The superparasitizing frequency plateaued for oviposition intervals of _〉0.75 h, with no dif- ference between self- and conspecific superparasitism. The ovicidal-probing frequency did not differ under self- and conspecific superparasitism, and was usually 〈20%. The females exhibited no preference for the oviposition side （i.e., ovipositing on the side with or without the first progeny） and almost always laid female eggs for any oviposition in- terval under self- and conspecific superparasitism. The sex ratio was not affected by the type of superparasitism, oviposition sides, or the occurrence of ovicidal probing. These observed results about the oviposition side, ovicidal probing, and sex ratios differed from the predictions obtained assuming that the females behave optimally. Possible reasons for the discrepancies are discussed： likely candidates include the high cost of selecting oviposition sides and ovicidal probing, and, for the sex ratio, the low frequency of encountering suitable hosts before superparasitism bouts.

关键词： infanticide ovicide plant hopper self-recognition sex ratio

Seismic assessment of two multi-tiered pagodas damaged by the 2015 Nepal earthquake

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Earthquake Engineering and Engineering Vibration 2021年第2期20卷 453-469页

作者： Yohei Endo Toshikazu Hanazato Department of Architecture Shinshu University4-17-1 WakasatoNagano 380-8553Japan Department of Architecture Mie University1577 Kurimamachiya-chōTsuMie 514-8507MieJapan

A seismic assessment of two multi-tier pagodas by numerical analysis is presented *** Changu Narayan temple and the Kumbeshwar temple in Nepal are used as the case *** pagodas are built of brick masonry in earthen mortar,with timber columns and *** Changu Narayan temple is a two-tier pagoda,and was seriously damaged during the 2015 Gorkha *** Kumbeshwar temple is a five-tier pagoda,and its top-tier collapsed due to the Gorkha earthquake.A seismic assessment was carried out using finite element(FE)*** FE models were prepared,and dynamic identification tests and penetrometer tests were *** analysis and nonlinear dynamic analysis were performed as part of the seismic *** main shock of the 2015 Gorkha earthquake was considered as the input *** behavior between the two pagodas was compared with the collapse mechanisms and damage patterns observed in the actual *** comparison suggested common structural features of multi-tier *** study is dedicated to providing a better understanding of the seismic behavior of multi-tier pagoda-type structures and provides suggestions for their effective analysis.

关键词： masonry multi-tier pagoda seismic assessment nonlinear dynamic analysis FEM analysis

Adrenocorticotropic hormone-secreting pancreatic neuroendocrine carcinoma with multiple organ infections and widespread thrombosis:A case report

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World Journal of Clinical Cases 2022年第17期10卷 5723-5731页

作者： Akihiro Yoshihara Kota Nishihama Chisa Inoue Yuko Okano Kazuhito Eguchi Soichiro Tanaka Kanako Maki Valeria Fridman D'Alessandro Atsuro Takeshita Taro Yasuma Mei Uemura Toshinari Suzuki Esteban C Gabazza Yutaka Yano Department of Diabetes and Endocrinology Japan Community Health care Organization Yokkaichi Hazu Medical CenterYokkaichi 510-0016MieJapan Department of Diabetes Metabolismand EndocrinologyMie UniversityTsu 514-8507MieJapan Department of Immunology Mie UniversityTsu 514-8507MieJapan Department of Immunology Faculty and Graduate School of MedicineMie UniversityTsu 514-8507MieJapan Department of Immunology and Department of Diabetes Metabolismand EndocrinologyMie UniversityTsu 514-8507MieJapan Department of Immunology Mie University School of MedicineMie UniversityTsu 514-8507MieJapan

BACKGROUND Ectopic adrenocorticotropic hormone(ACTH)-secreting neuroendocrine tumors are rare *** with ACTH-secreting pancreatic neuroendocrine carcinomas have a poor *** and coagulopathies have been reported as the cause of ***,detailed clinical descriptions of the morbid complications of ACTH-secreting neuroendocrine carcinomas have not been *** SUMMARY A 78-year-old Japanese woman consulted a medical center due to systemic edema and epigastric *** analysis revealed hypercortisolemia with increased ACTH secretion without diurnal variation in serum cortisol *** enhanced computed tomography(CT)scan revealed a 3-cm tumor in the pancreatic *** cytological material from endoscopic ultrasound-guided fine-needle aspiration was compatible with ACTHsecreting pancreatic neuroendocrine *** Ki-67 index was 40%.She was transferred to mie university Hospital for surgical *** patient was diagnosed with urinary tract infection,cytomegalovirus hepatitis,esophageal candidiasis,pulmonary infiltrates suspicious for Pneumocystis carinii pneumonia,peripheral deep vein thrombosis,pulmonary embolism,and disseminated intravascular *** multiple organ infections and thromboses responded well to antimicrobial and anticoagulant *** studies disclosed a pancreatic tumor and a metastatic lesion in the liver,whereas somatostatin receptor scintigraphy showed negative findings,suggesting the primary and metastatic tumors were poorly differentiated.A CT scan before admission showed no metastatic liver lesion,suggesting that the pancreatic tumor was rapidly *** of surgery,antitumor chemotherapy was *** patient was transferred to another hospital to initiate ***,she died four months later due to the rapidly progressive *** ACTH-secreting pancreatic neuroendocrine neoplasm is a rare disease with a very poor ***

关键词： Neuroendocrine tumors Cushing's syndrome Ectopic adrenocorticotropic hormone syndrome Pneumocystis pneumonia Pulmonary embolism Infections Case report