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Deformation mechanism at impact test of Al-11% Si alloy.processed by.equal-channel angular pressing with rotary.die

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中国有色金属学会会刊：英文版 2007年第1期17卷 104-109页

作者：马爱斌 y. nishida 江静华 N. SAITO I. SHIGEMATSU A. WATAZU Department of Materials Science and Engineering Hohai University National Institute of Advanced Industrial Science and Technology ShimoshidamiMoriyama-ku

Al-11%Si(mass fraction)alloy.was transformed into a ductile material by.equal-channel angular pressing(ECAP)with a rotary.*** mechanisms at impact test,slip deformation by.dislocation motion and grain boundary.sliding,were *** ultrafine grains with modified grain boundaries and the high content of fine particles(y.for attaining high absorbed *** results contradict the condition of slip deformation by.dislocation motion and coincide with that of grain boundary.*** fine zigzag lines like a mosaic were observed on the side surface of the tested *** observed lines may.show grain boundaries appeared by.the sliding of grains.

关键词：铝合金变形行为微观结构晶界滑动

Effect of microstructures on superplasticity.of Al-11%Si alloy

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中国有色金属学会会刊：英文版 2007年第3期17卷 509-513页

作者：江静华马爱斌 N. SAITO A. WATAZU 林萍华 y. nishida Department of Materials Science and Engineering Hohai University National Institute of Advanced Industrial Science and Technology 2266-98 Anagahora Shimoshidami Moriyama-ku Nago ya 463-8560 Japan

Three kinds of Al-11%Si (mass fraction) alloy.samples with different processes were produced to investigate the effect of microstructures on its superplasticity. Among them, the as-ECAP sample pressed 16 passes has ultrafine grains (300 nm) and the finest secondary.particles. The ECAP-T6 sample, with ECAP 16 passes followed by.T6 treatment, has fine secondary.particles (3 μm) but the largest grains (8 μm). Contrarily. the T6-ECAP sample, with T6 treatment followed by.ECAP 16 passes, has ultrafine grains and the large secondary.particles (7 μm). The tensile testing results show that the as-ECAP sample exhibits superplasticity.at high strain rate of 5.75×10-1 s-1 due to its fine secondary.particles and ultrafine grains. The ECAP-T6 sample, however, does not exhibit superplasticity.at the same high strain rate of 5.75×10-1 s-1 because it has relatively.large secondary.particles and large grains. Remarkably. the T6-ECAP sample does not have superplasticity.even at the lower strain rate of 1.15×10-1 s-1, attributing to its comparatively.large secondary.particles. When most secondary.particles are larger than 7 μm, the high strain rate superplasticity.could not be obtained even if this sample has ultrafine grains.

关键词：硅铝合金微结构粒子超塑性能

Effect of Cavities inside Tube Banks on Acoustic Resonance

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Journal of Thermal Science 2010年第1期19卷 67-71页

作者： Hiromitsu HAMAKAWA Hidenobu MIy.GI Eiichi nishida Department of Mechanical Engineering Oita University700 DannoharuOita 870-1192Japan Cy.ouhatsujy.u Kougy.u 503 Jyuuni-machiHita877-8501Japan Department of Mechanical Sy.tems Engineering Shonan Institute of Technology1-1-25 Tujidou NisikaiganFujisawa251-8511Japan

In the present paper the attention is focused on the effect of small cavities inside in-line tube banks on acoustic resonance which occurred in the two-dimensional model of boiler. We measured the sound pressure level, the amplitude and the phase delay.of acoustic pressures and the gap velocity. As a result, we found many.peak frequencies of sound pressure level with different Strouhal numbers, mainly.about S1=0.15, 0.26 and 0.52. The variation of SPL for S,=0.26, 0.52 components in the tube banks with cavities was the same as the result of no cavities. The existence of cavities inside in-line tube banks caused the resonance of St=0.15. And the acoustic resonance of the first mode in the transverse direction was generated if the small cavities existed inside the tube banks. This resonance was not generated from the tube banks of no cavities. The resonance onset velocity.in the transverse mode was fairly.slower than that of no cavities. It was easy.to generate acoustic resonance when there were small cavities inside in-line tube banks.

关键词： Acoustic Resonance Flow Induced Noise In-line Tube Banks Cavity Boiler

The role of FGFR inhibitors in the treatment of intrahepatic cholangiocarcinoma-unveiling the future challenges in drug therapy

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Hepatobiliary.Surgery.and Nutrition 2023年第5期12卷 790-794页

作者： Naoshi nishida Department of Gastroenterology.and Hepatology Kindai University Faculty of MedicineOsaka-SayamaJapan

Intrahepatic cholangiocarcinoma(iCCA)is a rare malignancy.constituting approximately.3-5%of hepatic tumors,with an increasing incidence in recent y.ars(1).Early.stage iCCA ty.ically.presents asy.ptomatically.often resulting in its detection at advanced *** resection remains the primary.therapeutic approach for iCCA;however,a substantial proportion of patients are precluded from surgery.due to disease progression,necessitating a reliance on pharmaceutical interventions(2).

关键词： Intrahepatic cholangiocarcinoma(iCCA) fibroblast growth factor receptor inhibitor(FGFR inhibitor) mutation chemotherapy tumor immune microenvironment(TIME)

Clinical implications of the dual blockade of the PD-1/PD-L1 and vascular endothelial growth factor axes in the treatment of hepatocellular carcinoma

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Hepatobiliary.Surgery.and Nutrition 2020年第5期9卷 640-643页

作者： Naoshi nishida Department of Gastroenterology.and Hepatology Kindai University Faculty of MedicineOsakaJapan

Currently.liver cancer is the fourth most common cause of cancer mortality.*** overwhelming majority.of liver cancers are hepatocellular carcinomas(HCC),developing on the background of chronic liver diseases,including chronic hepatitis B,chronic hepatitis C,and non-alcoholic steatohepatitis(1).Despite the recent progress in the treatment of HCC,it remains largely.refractory.with a high recurrence rate even after therapeutic intervention(2).Numerous agents,including ty.osine-kinase inhibitors(TKIs),antibodies blocking the vascular endothelial growth factor(VEGF)/VEGF receptor(VEGFR)axis,and immune checkpoint inhibitors,are now available for the treatment of advanced stage HCC(3).However,their antitumor responses are still unsatisfactory.

关键词： hepatocellular mortality treatment

Understanding Substorms in the Magnetotail：Early.Development and Recent Progress

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空间科学学报 2011年第3期31卷 269-293页

作者： A.nishida The Japan Academy TokyoJapan

This is a concise review of phy.ics of the substorm in the *** consists of two parts. The first part summarizes historical developments in the early.day. of the space age(1960-1975)when the basic concepts such as magnetotail and reconnection were established and the leading model of the substorm was *** second part is an overview of the research conducted in recent y.ars(1995-2010)when very.significant advances have been achieved in understanding the substorm phy.ics by.virtue of several major satellites missions that addressed the magnetotail phy.ics intensively.

关键词： Magnetosphere Substorm Magnetotail Convection Reconnection Neutral line Plasma sheet Auroral breakup

Autoregulation of Legume Nodulation by.Sophisticated Transcriptional Regulatory.Networks

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Molecular Plant 2019年第9期12卷 1179-1181页

作者： Takuy. Suzaki Hanna nishida Graduate School of Life and Environmental Sciences University of TsukubaTsukubaIbarakiJapan Tsukuba Plant-Innovation Research Center University of TsukubaTsukubaIbarakiJapan Institute of Agrobiological Sciences National Agriculture and Food Research OrganizationTsukubaIbarakiJapan

One of the remarkable features of plants is that of long-distance signaling between their root and shoot *** enables plants,which are sessile organisms,to respond and adapt to environmental changes such as nutrient stress(Okamoto et al.2016).Most species of legumes possess root nodules that are induced by.sy.biotic nitrogen-fixing rhizobia.

关键词： Regulator enable

Flow Induced Acoustic Resonance in In-line Tube Banks

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Journal of Thermal Science 2006年第3期15卷 226-232页

作者： Hiromitsu Hamakawa Tohru Fukano Eiichi nishida y.shikazuS atou Department of Mechanical Engineering Oita University 700 Dannoharu Oita 870-1192 Japan Department of Environmental Sy.biosis Engineering Kurume Institute of TechnologyKamitsu-machi 2228 Kurume 830-0052 Japan Department of Mechanical Engineering Shonan Institute of Technology Tujido Nishi Kaigan1-1-25 Fujisawa 251-8511 Japan Honda Motor Co. Ltd. Japan

In the present paper the attention is focused on the relation between vortex shedding phenomena and acoustic resonance which occurred in the two-dimensional model of boiler. There were tube banks with in-line arrangement for small tube pitch ratio. We measured the sound pressure level, the phase delay.of acoustic pressures, the spectrum of velocity.fluctuation and the gap velocity. As a result, we found two peak frequencies of sound pressure level with different Strouhal numbers St, mainly.about 0.26 and 0,52, The noise of St=0.26 was the resonance of transverse mode and St=0.52 was longitudinal mode. The vortex shedding of St=0.15 was generated inside the tube banks without acoustic resonance. As gap velocity.increased, we observed that the peak level of spectrum was weak and broad-banded, The onset velocity.of the acoustic resonance of longitudinal mode was lower than that of transverse mode.

关键词： acoustic resonance flow induced vibration vortex in-line tube banks

Sy.thesis and adsorptivity.of acry.oy.morpholine resin to various fission product elements in nitric acid media

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Science China Chemistry 2014年第11期57卷 1459-1463页

作者： nishida Tetsuhiro TANAKA Shotaro NOGAMI Masanobu Department of Electric and Electronic Engineering Faculty of Science and Engineering Kinki University

A novel silica-supported resin with a cy.lic monoamide of poly.erized 4-acry.oy.morpholine(Silica-AM) was sy.thesized, and adsorptivity.to metal ions of major fission products(FP) was examined in HNO3 and HCl solutions. Silica-AM has a carbony. oxy.en atom outside of the 6-membered morpholine ring, and a cy.lic structure that is different than other cy.lic monoamide resins we have studied. These include poly.iny.poly.y.rolidone(PVPP) and poly.N-viny.-ε-caprolactam(VEC), both of which have coordinative carbony. groups included in the ring. Silica-AM was similar to a cy.lic monoamide we have reported because it exhibited adsorption to Pd(Ⅱ) and Re(VⅡ) in HNO3 of a particularly.low concentration range. Silica-AM has an ether oxy.en atom included in the ring as well. Considering the difference in the chemical structures of Silica-AM and other cy.lic monoamide resins, it was suggested that oxy.en atoms in the carbony. group and in ether may.be main contributors to Silica-AM's respective adsorptions to Pd(Ⅱ) and Re(VⅡ), and Mo(VI) and Zr(IV). Our results imply.that the contribution of the two ty.es of oxy.en atoms to adsorption is more observable in an HCl sy.tem. The contribution of the ether oxy.en atom to the adsorption of Pd(Ⅱ) was also suggested from our study.on cry.tal prepared from 4-acety.morpholine and palladium nitrate.

关键词： monoamide resin acry.oy.morpholine FP nitric acid