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Experimental Analysis of Flow Structure in Contra-Rotating Axial Flow Pump Designed with Different Rotational Speed Concept

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Journal of Thermal Science 2013年第4期22卷 345-351页

作者： Linlin Cao Satoshi Watanabe toshiki imanishi Hiroaki Yoshimura Akinori Furukawa Graduate School of Engineering Kyushu University Department of Mechanical Engineering Kyushu University Oita National College of Technology

As a high specific speed pump, the contra-rotating axial flow pump distinguishes itself in a rear rotor rotating in the opposite direction of the front rotor, which remarkably contributes to the energy conversion, the reduction of the pump size, better hydraulic and cavitation performances. However, with two rotors rotating reversely, the significant interaction between blade rows was observed in our prototype contra-rotating rotors, which highly affected the pump performance compared with the conventional axial flow pumps. Consequently, a new type of rear rotor was designed by the rotational speed optimization methodology with some additional considerations, aiming at better cavitation performance, the reduction of blade rows interaction and the secondary flow suppression. The new rear rotor showed a satisfactory performance at the design flow rate but an unfavorable positive slope of the head - flow rate curve in the partial flow rate range less than 40% of the design flow rate, which should be avoided for the reliability of pump-pipe systems. In the present research, to understand the internal flow field of new rear rotor and its relation to the performances at the partial flow rates, the velocity distributions at the inlets and outlets of the rotors are firstly investigated. Then, the boundary layer flows on rotor surfaces, which clearly reflect the secondary flow inside the rotors, are analyzed through the limiting streamline observations using the multi-color oil-film method. Finally, the unsteady numerical simulations are carded out to understand the complicated internal flow structures in the rotors.

关键词： Contra-rotating rotors Internal flow Limiting streamlines Tip leakage vortex Corner separation

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碳布用于锂离子电池三维一体化柔性正极的可行性研究

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材料工程 2024年第3期52卷 192-198页

作者：闫时建郭锦同阳今西诚之太原科技大学材料科学与工程学院太原030024 三重大学材料化学系津市514-8507日本

研究碳纤维编织布用于锂离子电池三维一体化正极的可行性,对三种经过热处理碳布的石墨化程度进行定性分析和定量计算。以锂金属作为对电极,石墨化的碳布电极在0.1~0.5 V的电压下首次放电比容量分别为83.6,94.5mAh·g^(-1)和115.2 mAh·g... 详细信息

研究碳纤维编织布用于锂离子电池三维一体化正极的可行性,对三种经过热处理碳布的石墨化程度进行定性分析和定量计算。以锂金属作为对电极,石墨化的碳布电极在0.1~0.5 V的电压下首次放电比容量分别为83.6,94.5mAh·g^(-1)和115.2 mAh·g^(-1),经过50周次循环充放电后比容量分别为55.0,80.0 mAh·g^(-1)和88.0 mAh·g^(-1)左右。将石墨化的碳布负载LiFePO_(4)后,电极的首次放电比容量分别为73.2,109.5 mAh·g^(-1)和130.2 mAh·g^(-1)。对于石墨化程度为76.02%的碳布,经过50周次循环充放电后比容量稳定在90.0 mAh·g^(-1)左右,综合电化学性能较好,更适合用于锂离子电池的一体化柔性正极。通过建立LiFePO_(4)颗粒与碳纤维之间相互作用的力学模型,探讨一体化正极的力学性能、电学性能和电化学性能之间的关系。将碳布用于锂离子电池一体化正极,可以简化锂离子电池的常规生产过程,革新其生产方式。

关键词：锂离子电池碳布石墨化程度三维一体化柔性正极导电性

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用于一体化电极的碳布改性综述

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电池 2024年第1期54卷 121-125页

作者：闫时建郭锦同阳今西诚之太原科技大学材料科学与工程学院山西太原030024 三重大学材料化学系日本三重县津市514-8507

由于碳布密度低、柔性高且导电导热性好,在电子器件中应用广泛。当碳布与其他材料复合时,为获得所需的性能,需对其进行改性处理。总结对当前用于电子器件中一体化电极的碳布进行改性的主要方法。从去浆、形貌处理和活性处理等3个方面进... 详细信息

由于碳布密度低、柔性高且导电导热性好,在电子器件中应用广泛。当碳布与其他材料复合时,为获得所需的性能,需对其进行改性处理。总结对当前用于电子器件中一体化电极的碳布进行改性的主要方法。从去浆、形貌处理和活性处理等3个方面进行介绍,并指出每种改性方法的优缺点和选用需考虑的要点。液相反应法对表面活性改变显著,但往往会降低电导率;热空气处理法对形貌改变显著,但操作过程复杂。液相氧化、热空气氧化和高温碳化相结合的改性效果可以更好,形貌改性和活性改性同时进行,可能会得到更好的综合性能。将碳布与活性物质直接复合制成一体化电极而完成改性处理,由于效率高可能成为改性技术的发展趋势。

关键词：一体化电极碳布改性去浆形貌处理活性处理

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Fast simulation of flexible multibody dynamics with electric-hydraulic drive system

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Theoretical & Applied Mechanics Letters 2013年第1期3卷 19-24页

作者： Etsujiro imanishi Takao Nanjo Mechanical Engineering Research Laboratory Kobe Steel LTD

Hardware in the loop simulation （HILS） has been investigated in the field of the multibody dynamics （MBD）, which combined the MBD simulation with the actual mechanical system. The fast simulation is necessary for the HILS system in order to require the real time simulation. This paper presents a fast simulation technique using the domain decomposition method with the iteration in the flexible multibody system in which flexible linkage system and electro-hydraulic drive system are coupled with each other. C 2013 The Chinese Society of Theoretical and Applied Mechanics.[doi：10.1063/2.1301301]

关键词： multibody dynamics simulation construction machineary parallel processing

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White-opaque Switching in Different Mating Type-like Locus Gene Types of Clinical Candida albicans Isolates

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Chinese Medical Journal 2016年第22期129卷 2725-2732页

作者： Hou-Min Li Yumi Shimizu-imanishi Reiko Tanaka Ruo-Yu Li Takashi Yaguchi Department of Dermatology Peking University People's Hospital Beijing 100044 China Medical Mycology Research Center Chiba University Chiba 260-8673 Japan Department of Dermatology Peking University First Hospital Beijing 100034 China

Background：Candida albicans （***） can become a pathogen causing superficial as well as life-threatening systemic infections,especially in immunocompromised *** phenotypic attributes contribute to its capacity to colonize human *** our study,93 *** isolates from patients of various candidiasis in a hospital of China were *** aimed to investigate the white-opaque （WO） switching competence,drug sensitivity,and virulence of mating type-like （MTL） a/α ***：Internal transcribed spacer （ITS） gene and the MTL configuration were detected in all the isolates by reverse transcription-polymerase chain ***/opaque phenotype and doubling time of cell growth were *** minimum inhibitory concentrations of antifungal agent were measured using broth microdilution ***：Sixty-four isolates （69.6%） were classified to serotype A,19 （20.6%） to serotype B,and 9 （9.8%） to serotype ***,phylogenetic analysis showed that these isolates were divided into four different subgroups of ITS *** of our clinical isolates were MTLa/α type,while 6.8% remained MTLa or MTLα *** frequency of opaque phenotype was 71.0% （66 isolates）.Following the guidelines of Clinical and Laboratory Standards Institute M27-A3,all isolates were susceptible to caspofungin and a few （0.6-3.2%） of them showed resistance against amphotericin B,flucytosine,fluconazole,itraconazole,and ***：From these analyses,there were comparatively more *** strains classified into serotype B,and the frequency of opaque phase strains was significant in the clinical isolates from ***,phenotypic,or drug susceptibility patterns were not significantly different from previous ***/α isolates could also undergo WO switching which facilitates their survival.

关键词： Candida albicans Drug Susceptibility Genotype Mating Type-like White-opaque

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Imaging biomarkers for the treatment of esophageal cancer

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World Journal of Gastroenterology 2019年第24期25卷 3021-3029页

作者： Koichi Hayano Gaku Ohira Atsushi Hirata Tomoyoshi Aoyagi Shunsuke imanishi Toru Tochigi Toshiharu Hanaoka Kiyohiko Shuto Hisahiro Matsubara Department of Frontier Surgery Chiba University Graduate School of MedicineChiba 260-8677Japan Department of Surgery Teikyo University Medical CenterChiba 299-0111Japan

Esophageal cancer is known as one of the malignant cancers with poor *** improve the outcome,combined multimodality treatment is *** the other hand,advances in genomics and other“omic”technologies are paving way to the patient-oriented treatment called“personalized”or“precision”*** advancements of imaging techniques such as functional imaging make it possible to use imaging features as biomarker for diagnosis,treatment response,and prognosis in cancer *** this review,we will discuss how we can use imaging derived tumor features as biomarker for the treatment of esophageal cancer.

关键词： Esophageal cancer Computed tomography perfusion Dynamic-contrastenhanced magnetic resonance imaging Texture analysis Diffusion-weighted imaging Positron emission tomography

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Appendicitis with psoas abscess successfully treated by laparoscopic surgery

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World Journal of Gastroenterology 2014年第25期20卷 8317-8319页

作者： Yasunori Otowa Yasuo Sumi Shingo Kanaji Kiyonori Kanemitsu Kimihiro Yamashita Tatsuya imanishi Tetsu Nakamura Satoshi Suzuki Kenichi Tanaka Yoshihiro Kakeji Division of Gastrointestinal Surgery Department of SurgeryKobe University Graduate School of Medicine 7-5-2 Kusunokichou Chuo-ku Kobe Hyogo Prefecture 650-0017 Japan Division of Gastrointestinal Surgery Department of SurgeryKobe University Graduate School of Medicine7-5-2 KusunokichouChuo-ku KobeHyogo Prefecture 650-0017Japan

Although acute appendicitis is a common disease, retroperitoneal abscesses are rarely observed. Here, we report a case consisting of a psoas abscess and cutaneous fistula caused by appendicitis. The patient was a 56-year-old male who was introduced to our institution due to an intractable right psoas abscess. Imaging tests had been performed over the previous 3 years; however, clinicians could not find the origin of the abscess and failed to resolve the problem. A successful operation was performed via a laparoscopic approach, and 17 mo have passed without recurrence. The advantage of laparoscopic surgery is well understood in cases of appendicitis with abscesses. However, the indication for laparoscopic approach is not clear for retroperitoneal abscesses. From our experience, we can conclude that appendicitis with retroperitonealabscesses can be managed and treated using a laparoscopic approach.

关键词： Appendicitis Laparoscopic surgery Psoas abscess Retroperitoneal abscess Right leg pain

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A Study for Conservation of Herbaceous Plants at Urban Green Spaces: A Comparison to Suburban Secondary Forest

A Study for Conservation of Herbaceous Plants at Urban Green...

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第8届中日韩国际风景园林学术研讨会

作者： Ayumi imanishi Junichi imanishi Kentaro MURAKAMI Yukihiro MORIMOT0 Graduate School of Agriculture Kyoto Univ. Japan Graduate School of Global Environmental Studies Kyoto Univ. Japan Natural History Museum Kishiwada City Japan Graduate School of Global Environmental Studies Kyoto Univ. Japan

＜正＞The meaning of conservation of urban green spaces in Kyoto city was studied by comparing the herbaceous flora between 15 isolated urban green spaces and a suburban secondary forest. At the 15 urban green spaces of 58.9hm2 in total, 376 herbaceous plants including 276 native species and 100 alien species were recorded. At a suburban secondary forest of 50.8 hm2, 355 herbaceous plants including 298 native species and 57 alien species were recorded on the list of herbaceous plants surveyed in the Kamigamo Experimental Forest of Kyoto University by technical officers between 1995 and 1996. The percentage of alien species was significantly high in the urban green spaces, whereas the percentage of native species was significantly high in the suburban secondary forest （chi-square test and Haberman’s residual analysis, p ＜ 0.05）. Similarity coefficients between the urban green spaces and the suburban secondary forest were 0.48 in Jaccard index and 0.65 in Sorenson index. The percentage of perennials that is known to appear in late stage of succession was significantly high in the unique species of the suburban secondary forest （chi-square test and Haberman’s residual analysis, p ＜ 0.05）. This was suggested that a suburban secondary forest had more stable environment in comparison with the urban green spaces. The red-listed species recorded at the suburban secondary forest included Sarcochilus japonicus （Orchidaceae）, an epiphyte, which grows on tree trunks in humid forests. But no epiphyte was recorded at the 15 urban green spaces. It was supposed that the forests of the isolated urban green spaces had smaller amount of humid environments because they had greater amount of forest edges in comparison with the suburban secondary forest, which was connected to a larger forest area, and because they are sensitive to solar radiation and wind from outside of forests （edge effects）. The red-listed species recorded at the urban green spaces included Veronica didyma var. lilacina

关键词： Herbaceous Plant Species Urban Green Space Suburban Secondary Forest Biodiversity Red-listed Species

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Laparoscopic partial resection for hemangioma in the third portion of the duodenum

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World Journal of Gastroenterology 2014年第34期20卷 12341-12345页

作者： Shingo Kanaji Tetsu Nakamura Masayasu Nishi Masashi Yamamoto Kiyonori Kanemitu Kimihiro Yamashiita Tatsuya imanishi Yasuo Sumi Satoshi Suzuki Kenichi Tanaka Yoshihiro Kakeji Department of Gastrointestinal Surgery Faculty of MedicineHyogo 650-0017Japan

Benign duodenal tumors are rare and less commonthan malignant ***,vascular lesionsof the duodenum,including hemangiomas,are rarecauses of gastrointestinal *** report describes a case with bleeding hemangiomas in the thirdportion of the duodenum and jejunum and their successful treatment using a laparoscopic *** no report of totally laparoscopic resection for tumorin the third portion of *** performinga laparoscopic Kocher maneuver,the location of theduodenal hemangioma was confirmed by endoscopicand laparoscopic *** lesion was excisedusing ultrasonic coagulating shears and the defect inthe duodenal wall was sutured *** of the jejunum was treated extracorporeally through a 3.0 cm umbilical *** operatingtime was 241 min and blood loss was *** course was *** benign duodenal tumors in the third portion,if endoscopic resection is not adapted,this less invasive technique may be a standard treatment.

关键词： Hemangioma Third portion Duodenum Total laparoscopic resection

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An Estimation Procedure of Habitat Impacts of Highways as a General Guide for an Initial Route Selection

An Estimation Procedure of Habitat Impacts of Highways as a ...

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The 5th International Landscape Architectural Symposium of China, Japan and Korea

作者： Junichi imanishi Yukihiro Morimoto Dep.of Landscape A rchitecture and Environmental Planning Univ.of CalifBerkeley.U.S.A.（present affliation）Dep.of ForestryGraduate School of AgricultureKyoto UnivJapan Dep.of Forestry Graduate School of AgricultureKyoto UnivJapan

＜正＞It is essential to estimate and avoid the impacts of large structures on ecosystems from anearly planning stage. Although detailed and long-termed data collection is desirable, conductingsuch intensive surveys at a number of locations during the initial stage of highway route selection isnot realistic. Conventional ecological assessment methods essentially have positive values;however,a holistic point of view for biodiversity protection is currently missing. With these concerns in mind,we carried out research on the procedure to estimate the relative impacts of highway alternative routeson habitats as a general guide for initial route selections. The estimation procedure that embodied aholistic approach incorporated habitat dependency indices （HDIs） of species groups that werehypothetically established from landscape ecological studies. The procedural steps are 1) delineate astudy area, 2) prepare an existing land cover layer, 3) determine species groups for the habitat impactassessment, 4) define the levels of habitat values for each species group （a habitat value matrix）, 5)assign a number （0 to 1） to each level of the habitat values, 6) produce the habitat impact layer of eachspecies group, 7) calculate the habitat dependency index （HDI） of each species group, 8) determine aroad-effect width, 9) multiply the number on the habitat impact layer by the HDI of each species group,10) sum up the weighted habitat impacts within the road-effect zone for all the species groups, 11)repeat steps 5 to 10 and analyze sensitivities of the 2 parameters: the assigned habitat values at the step5 and the road-effect width at the step 8 and 12) interpret the output. We conducted a case studyalong US highway 93 in the Flathead Reservation, Montana, U.S.A. to observe the resourcefulness ofthe results derived from the proposed procedure in relation to the sensitivity of the parameters. Theconsistency in the rank of the routes indicated that the estimation method can potentially be

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