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Stationary Potential Formation and Oscillations in Plasma with Immovable Dust Particles

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Plasma Science and Technology 2005年第1期7卷 2657-2659页

作者： y.tomita R.Smirnov S.Zhu NationalInstituteforFusionScience 322-60roshi-choToki509-5292Japan TheGraduateUniversityforAdvancedStudies 322-60roshi-choToki509-5292Japan InstituteofPlasmaPhysics ChineseAcademyofSciencesHefei230031China

Stationary electrostatic-potential formation in plasma with immovable dustparticles was investigated by using one-dimensional kinetic analysis. It is clarified that thedensity of negatively charged dust particles below the threshold value makes the potential decreasemonoton-ically. When the dust densities are above the threshold, there appears the stationaryoscillation in an electrostatic potential due to the streaming plasma. It is found that thewavelength of this mode is of the order of Debye length. These phenomena are different from those ofthe conventional dust ion-acoustic waves in plasma, where the effect of dust-charging is not takeninto account.

关键词： dust particle stationary potential dust ion-acoustic wave

Analysis on EAST LHCD Operation Space by Using Simple Core-SOL-Divertor Model

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Plasma Science and Technology 2009年第4期11卷 389-393页

作者： R.HIWATARI A.HATAyAMA S.ZHU y.tomita Central Research Institute of Electric Power Industry Faculty of Science and Technology Keio University Institute of Plasma Physics Chinese Academy of Sciences National Institute for Fusion Science

A simple core-SOL-divertor model （CSD model） was developed to investigate qual- itatively the overall features of the operational space for the integrated core and edge plasma. In the CSD model, the core plasma model of ITER physics guidelines and the two-point SOL-divertor model are applied, This CSD model is validated by the two dimensional divertor transport code （B2-EIRINE） and by the JT-60U divertor recycling database, and this model is applicable to the low- and high-recycling state of the divertor plasma. The CSD model is applied to the study of the EAST operational space with lower hybrid current drive under various kinds of trade-off for the basic plasma parameters, and the relationship between the operational space and the plasma discharge duration is also discussed.

关键词： core transport SOL-divertor transport operation space EAST LHCD

Predictions for EAST Divertor Performance

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Plasma Science and Technology 2006年第1期8卷 118-121页

作者：朱思铮 R.HIWATARI A.HATAyAMA y.tomita Institute of Plasma Physics Chinese Academy of SciencesHefei 230031China Central Research Institute of Electric Power Industry TokyoJapan Faculty of Science and Technology Keio UniversityYokohamaJapan National Institute for Fusion Science TokiJapan

A detailed study of the divertor performance in EAST has been performed for both its double null （DN） and single null （SN） configurations. The results of application of the SOLPS （B2-Eirene） code package to the analysis of the EAST divertor are summarized. In this work, we concentrate on the effects of increased geometrical closure and of magnetic topology variation on the scrape-off layer （SOL） and divertor plasma behavior. The results of numerical predictions for the EAST divertor operational window are also described in this paper. A simple Core-SOL- Divertor （C-S-D） model was applied to investigate the possibility of extending plasma operational space of low hybrid current drive （LHCD） experiments for EAST.

关键词： EAST divertor SOLPS Core-SOL-Divertor model

Overall Features of EAST Operation Space by Using Simple Core-SOL-Divertor Model

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Plasma Science and Technology 2006年第1期8卷 114-117页

作者： R.HIWATARI A.HATAyAMA 朱思铮 T.TAKIZUKA y.tomita Oentral Research Institute of Electric Power Industry TokyoJapan Faculty of Science and Technology Keio UniversityYokohamaJapan Institute of Plasma Physics Chinese Academy of SciencesHefei230031 China Naka Fusion Energy Establishment Japan Atomic Energy Research InstituteIbarakiJapan National Institute for Fusion Science TokiJapan

A simple Core-SOL-Divertor （C-S-D） model has been developed to investigate qualitatively the overall features of the operational space for the integrated core and edge plasma. To construct the simple C-S-D model, a simple core plasma model of ITER physics guidelines and a two-point SOL-divertor model are used. The simple C-S-D model is applied to the study of the EAST operational space with lower hybrid current drive experiments under various kinds of trade-off for the basic plasma parameters. Effective methods for extending the operational space are also presented, From this study for the EAST operational space, it is evident that the C-S-D model is a useful tool for understanding qualitatively the overall features of the plasma operational space.

关键词： divertor modeling particle balance core-edge interface EAST

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高分子材料平面应变拉伸变形局部化

力学学报 1996年第5期28卷 564-574页

作者：胡平 y.tomita 吉林工业大学工程力学系日本神户大学工学部

将基于应变软化玻璃状高分子材料微观特征建立的ＢＰＡ８－链分子网络模型引入ＵｐｄａｔｉｎｇＬａｇｒａｎｇｅ有限元方法，建立了适于变形局部化分析的大变形弹塑性有限元驱动应力法．在此基础上，数值模拟了初始各向同性高分子材料... 详细信息

将基于应变软化玻璃状高分子材料微观特征建立的ＢＰＡ８－链分子网络模型引入ＵｐｄａｔｉｎｇＬａｇｒａｎｇｅ有限元方法，建立了适于变形局部化分析的大变形弹塑性有限元驱动应力法．在此基础上，数值模拟了初始各向同性高分子材料平面应变拉伸变形局部化的传播过程．探讨了ＢＰＡ模型对具有加工硬化特性的结晶性高分子材料变形分析的适应性；分析了局部化传播过程中颈缩截面的非均匀应力三轴效应；最后。

关键词：有限元高分子材料平面应变拉伸

MR评估肘伸展和屈曲时尺神经的位置和信号强度

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国际医学放射学杂志 2016年第5期 573-574页

作者： y.Kawahara T.yamaguchi y.Honda y.tomita M.Uetani 彭娴婧 Department of Radiology Nagasaki Rosai Hospital

摘要目的评价MRI上肘关节伸展和屈曲状态下尺神经的位置和信号强度。方法本研究获得伦理委员会批准,受试者签署知情同意书。分别采集50名志愿者(男23名,女27名;年龄21～57岁)共100侧垂直于上臂的肘关节横断面T2WI,以及9例患尺神经病变者... 详细信息

摘要目的评价MRI上肘关节伸展和屈曲状态下尺神经的位置和信号强度。方法本研究获得伦理委员会批准,受试者签署知情同意书。分别采集50名志愿者(男23名,女27名;年龄21～57岁)共100侧垂直于上臂的肘关节横断面T2WI,以及9例患尺神经病变者(男5例,女4例;年龄24～59岁)伸展和屈曲130°时的肘关节横断面T2WI。将尺骨神经

关键词：尺神经臂丛 MR 信号强度肘关节

根据体质量指数优化主动脉和肝脏的多层CT增强:比较总体质量、去脂体质量和血容量

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国际医学放射学杂志 2010年第2期 171-172页

作者： H.Kondo M.Kanematsu S.Goshima y.tomita M.J.Kim N.Moriyama 高欣 Department of Radiology Gifu University Hospital

目的评价并比较总体质量、去脂体质量及估计血容量对多层CT主动脉和肝脏对比剂增强扫描所需碘剂量的调节的影响。材料与方法研究获机构审查委员会批准并获

关键词：血容量脂体肝脏强化程度主动脉大动脉质量 CT

Cortical hem signaling center: functions, development, and potential implications for evolution and brain disorders

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Neural Regeneration Research 2025年第4期20卷 1079-1080页

作者： Victor V.Chizhikov Igor y.Iskusnykh Department of Anatomy and Neurobiology University of Tennessee Health Science CenterMemphisTNUSA

Development of the telencephalon relies upon several signaling centers-localized cellular populations that supply secreted factors to pattern the cortical *** such signaling center is the cortical hem,which arises during embryonic development at the telencephalic dorsal midline,adjacent to the choroid plexus and hippocampal primordium(Figure 1A).While the cortical hem has also been described in reptiles and birds,most of our knowledge about the developmental roles of the cortical hem is derived from the analysis in *** cortical hem produces several types of secreted molecules,including wingless-related integration site(Wnt)and bone morphogenetic(Bmp)*** cortical hem is particularly important for the development of the hippocampus,which is involved in learning and memory,and the neocortex,which is the most complex brain region that mediates multiple types of behavior and higher cognitive functions(Mangale et al.,2008;Dal-Valle-Anton and Borrell,2022).

关键词： epithelium Figure center

Exercise preconditioning alleviates ischemia-induced memory deficits by increasing circulating adiponectin

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Neural Regeneration Research 2025年第5期20卷 1445-1454页

作者： Meifeng Zheng Borui Zhang Sonata S y yau Kwok-Fai So Li Zhang Haining Ou Department of Rehabilitation Medicine Guangzhou Medical UniversityGuangzhouGuangdong ProvinceChina Department of Rehabilitation Medicine The Fifth Clinical College of Guangzhou Medical UniversityGuangzhouGuangdong ProvinceChina Key Laboratory of CNS Regeneration(Ministry of Education) Guangdong-Hong Kong-Macao Institute of CNS RegenerationJinan UniversityGuangzhouGuangdong ProvinceChina Department of Rehabilitation Sciences The Hong Kong Polytechnic UniversityHong Kong Special Administrative RegionChina State Key Laboratory of Brain and Cognitive Science Li Ka Shing Faculty of MedicineThe University of Hong KongHong Kong Special Administrative RegionChina Center for Exercise and Brain Science School of PsychologyShanghai University of SportShanghaiChina Neuroscience and Neurorehabilitation Institute University of Health and Rehabilitation SciencesQingdaoShandong ProvinceChina

Cerebral ischemia is a major health risk that requires preventive approaches in addition to drug *** exercise enhances neurogenesis and synaptogenesis,and has been widely used for functional rehabilitation after *** this study,we determined whether exercise training before disease onset can alleviate the severity of cerebral *** also examined the role of exercise-induced circulating factors in these *** mice were subjected to 14 days of treadmill exercise training before surgery for middle cerebral artery *** found that this exercise pre-conditioning strategy effectively attenuated brain infarct area,inhibited gliogenesis,protected synaptic proteins,and improved novel object and spatial memory *** analysis showed that circulating adiponectin plays a critical role in these preventive effects of *** activation of adiponectin receptors by Adipo Ron mimicked the effects of exercise,while inhibiting receptor activation abolished the exercise *** summary,our results suggest a crucial role of circulating adiponectin in the effects of exercise pre-conditioning in protecting against cerebral ischemia and supporting the health benefits of exercise.

关键词： adiponectin cerebral ischemia exercise pre-conditioning hippocampus memory function middle cerebral artery occlusion prefrontal cortex synaptic proteins treadmill exercise