检索结果-南通市图书馆

Experimental Results of MHD Suppression with Modulated LHCD on the HT-7 Tokamak

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

plasma Science and Technology 2005年第3期7卷 2816-2818页

作者：毛剑珊罗家融沈飙赵君煜胡立群徐国盛徐汉东沈慰慈 p.phillips 高翔 Institute of plasma physics Chinese Academy of Sciences Hefei 230031 China Fusion Research Center C1510 Univ. of Texas at Austin. TX 78712 USA

Modulation of lower hybrid current drive was used successfully to suppress MHD activity. This was achieved in discharges with MHD m = 2 tearing modes during the discharge conditions Ip = 110 kA, Bt = 1.75 T, ne0 - 1.1 × 1013 cm-3. The delivering time of LHCD pulse is less then 30 μs. The amplitude, interval and the period of LHCD modulation pulse can be adjusted very conveniently. The modulation LHCD can be delivered very fast at any time during the discharge. The modulation LHCD period was always much shorter than the plasma resistive time (Tη ≈100 ms). So the profile of plasma current is changed much faster than the plasma resistive time. The different forms of LHCD modulating can be proved.

关键词： HT-7 tokamak tearing mode modulation of lower hybrid current drive

The Experiment of Modulated Toroidal Current on HT-7 and HT-6M Tokamak

在线全文

学校读者我要写书评

暂无评论

plasma Science and Technology 2003年第1期5卷 1641-1650页

作者：毛剑珊 p.phillips 罗家融徐宇鸿赵君煜张先梅万宝年张守银揭银先吴振伟胡立群刘胜霞石跃江李建刚 HT-6M＆HT-7 group Institute of plasma physics Chinese Academy of Sciences Hefei 230031 China. Fusion Research Center C1510 University of Texas at Austin. TX 78712 USA

The Experiments of Modulated Toroidal Current were done on the HT-6M tokamak and HT-7 superconducting tokamak. The toroidal current was modulated by programming the Ohmic heating field. Modulation of the plasma current has been used successfully to suppress MHD activity in discharges near the density limit where large MHD m = 2 tearing modes were suppressed by sufficiently large plasma current oscillations. The improved Ohmic confinement phase was observed during modulating toroidal current (MTC) on the Hefei Tokamak-6M (HT-6M) and Hefei superconducting Tokamak-7 (HT-7). A toroidal frequency-modulated current, induced by a modulated loop voltage, was added on the plasma equilibrium current. The ratio of A.C. amplitude of plasma current to the main plasma current Ip/Ip is about 12% ~ 30%. The different formats of the frequency-modulated toroidal current were compared.

关键词： modulated toroicdal current superconducting tokamak

HT—7超导托卡马克上离子玻恩斯坦波调制实验(英文)

在线全文

学校读者我要写书评

暂无评论

科学技术与工程 2003年第5期3卷 445-450页

作者：毛剑珊徐国盛 p.phillips 宋梅赵燕平高翔 M.Asif 罗家融中国科学院等离子体物理研究所 Fusion Research Center C1510 Univ. of Texas at Austin. TX 78712 USA

离子玻恩斯坦波调制实验在HT—7超导托卡马克装置上完成了。在实验中观察到了约束改善的现象。在离子玻恩斯坦波调制时,用朗谬探针阵列研究了HT—7托卡马克刮削层的涨落和输运。在离子玻恩斯坦波调制时,密度涨落被明显抑制,同时由静电... 详细信息

离子玻恩斯坦波调制实验在HT—7超导托卡马克装置上完成了。在实验中观察到了约束改善的现象。在离子玻恩斯坦波调制时,用朗谬探针阵列研究了HT—7托卡马克刮削层的涨落和输运。在离子玻恩斯坦波调制时,密度涨落被明显抑制,同时由静电涨落引起的向外的粒子通量和热通量减少到零。刮削层中的极向扰动传播方向改变了。即在欧姆放电时,极向扰动传播方向是离子逆磁方向在有离子玻恩斯坦波时,极向扰动传播似乎停止,产生了负的径向电场。杂质辐射被离子玻恩斯坦波调制阻止。大的MHD能能被离子玻恩斯坦波调制所抑制。由撕裂模引起的大破裂能够被延迟或被避免。重复多次的IBW脉冲可以进行扰动的解相关和约束改善的机理研究。

关键词： HT-7超导托卡马克离子玻恩斯坦波调制朗谬探针阵列刮削层粒子通量热通量极向扰动

腔内CT结肠成像中提高导航速度会影响结肠观察和降低息肉识别率

在线全文

学校读者我要写书评

暂无评论

国际医学放射学杂志 2017年第5期 596-596页

作者： A.A.plumb p.phillips G.Spence S.Mallett S.A.Taylor S.Halligan 仇小路 Centre for Medical Imaging University College London

摘要目的探讨CT结肠成像中提高导航速度对息肉识别中视觉查找和决策的影响。材料与方法机构伦理委员会批准应用去标识的CT结肠成像数据进行此回顾性阅片研

关键词：结肠成像 CT

计算机辅助检测标志物对审阅者在阅读CT结肠成像时视觉搜索和表现的影响

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

国际医学放射学杂志 2015年第4期 399-399页

作者： E.Helbren T.R.Fanshawe p.phillips S.Mallett D.Boone A.Gale 刘春明 Gastrointestinal Radiology University College LondonCentre for Medical Imaging Podium Level2 University College Hospital

摘要目的旨在确定计算机辅助检测(CAD)对无经验和经验丰富的审阅者在审阅CT结肠成像(CTC)时的视觉搜索和表现的影响。方法共记录了15例行腔内CTC检查的病

关键词：结肠成像 CTC 息肉瘤样病变视觉搜索 CAD CT

应用CRISp清单,提升我国全科医学和基本医疗研究报告的质量

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

中国全科医学 2025年第4期28卷 393-401页

作者：杨辉汪洋陈庆奇刘晨曦顾杰赵洋秦江梅曹新阳 Elizabeth Sturgiss William R.phillips 许岩丽 Monash大学公共卫生与预防医学学院澳大利亚墨尔本市VIC 3168 上海市全科医学与社区卫生发展研究中心 200090 同济大学附属杨浦医院全科医学科上海市200090 香港大学家庭医学及基层医疗学系中国香港特别行政区999077 华中科技大学同济医学院医药卫生管理学院湖北省武汉市430000 复旦大学附属中山医院全科医学科上海市200032 复旦大学附属中山医院国际医疗部上海市200032 新南威尔士大学乔治全球健康研究院澳大利亚悉尼2050 墨尔本大学人口与全球健康学院澳大利亚墨尔本3010 国家卫生健康委卫生发展研究中心北京市100044 《中国全科医学》杂志社有限公司北京市100053 School of primary and Allied Health Care Monash UniversityMelbourneVictoriaAustraliaVIC 3168 University of Washington SeattleWashington98195

基本医疗(初级保健)研究报告内容的条目共识(CRISp)工作组于2023年提出了CRISp清单,以支持改善上述领域研究报告的质量、实用性和传播性。《中国全科医学》英文版的学术编辑团队对CRISp清单进行了中文翻译,并通过这篇述评,在回顾我国全... 详细信息

基本医疗(初级保健)研究报告内容的条目共识(CRISp)工作组于2023年提出了CRISp清单,以支持改善上述领域研究报告的质量、实用性和传播性。《中国全科医学》英文版的学术编辑团队对CRISp清单进行了中文翻译,并通过这篇述评,在回顾我国全科医学和基本医疗研究的内涵和发展现状的基础上,归纳了该领域的科研报告中目前存在的主要问题,如“以作者为中心”“过度重视塑造权威性”“盲目生搬国际经验”“缺乏对方法学的透明报告”“在论文中压入大量冗繁信息”以及“遮蔽关键信息”等。最后,编辑团队推荐和鼓励中国的全科医学和基本医疗服务研究的作者、编辑和学术评议专家尝试使用CRISp清单,在改善中国全科医学和基本医疗研究报告质量的同时,进一步完善该工具在学科发展研究、临床研究、卫生服务研究、卫生政策研究、教育和培训研究以及社区流行病学研究等亚领域中的应用。

关键词：全科医学基本医疗研究报告内容共识

Direct Measurements of the Electron Energy Flux versus Electron Temperature Gradient in Tokamak Discharges

同方期刊数据库博看期刊评论

在线全文

学校读者我要写书评

暂无评论

plasma Science and Technology 2004年第1期6卷 2130-2134页

作者： K.W.Gentle M.E.Austin p.E.phillips Fusion Research Center University of Texas USAFusion Research Center University of Texas USAFusion Research Center University of Texas USA

Electron thermal transport is one of the most complex processes in fusionplasmas. It is generally described by a simple thermal diffusivity in transport analyses ofdischarges, but there is evidence of critical gradient effects with moderate stiffness. By analyzingperiodic perturbations to an equilibrium, one canmeasure the variations in electron energy flux andelectron temperature gradient over the perturbation cycle, obtaining the flux as a function ofgradient over the range of parameters generated by the perturbation. Although time-dependenttransport analysis is very sensitive to noise in the input data, averaging over many cycles of aperiodic perturbation can provide data of sufficient quality. The analyses presented here are basedon the ECE temperature data with high spatial and temporal resolution and full profile coverage onDIII-D for sawteeth and modulated ECH heating.

关键词： tokamak discharges electron energy flux electron temperature gradient direct measurements

Thin liquid film morphology driven by electro-static field

在线全文

学校读者我要写书评

暂无评论

Applied Mathematics and Mechanics(English Edition) 2011年第8期32卷 1039-1046页

作者： E.M.TIAN T.p.SVOBODNY J.D.phillips Department of Mathematics and Statistics Wright State University

The development of stationary patterns on a thin polymer surface subject to an electric field is studied by means of the hexagonal-planform weakly nonlinear stability analysis and numerical simulations. The time evolution of the interface between the air and the polymer film on the unbounded spatial domain is described by a thin film equation, incorporating the electric driving force and the surface *** nonlinear interfacial growth includes the amplitude equations and superposition of one-dimensional structures at regular orientations. The pattern selection is driven by the subcritical instability mechanism in which the relative thickness of the polymer film plays a critical role.

关键词： thin film pattern formation electrohydrodynamic instability

A humanized mouse model to study human immune response in xenotransplantation

在线全文

学校读者我要写书评

暂无评论

Hepatobiliary & pancreatic Diseases International 2012年第5期11卷 494-498页

作者： peta phillips Center for Transplant and Renal Research Westmead Millennium InstituteWestmead HospitalWestmeadNSW Sydney 2145Australia

BACKGROUND: A major barrier to the clinical application of xenotransplantation as a treatment option for patients is T cell-mediated rejection. Studies based on experimental rodent models of xenograft tolerance or rejection in vivo have provided useful information about the role of T cell immune response in xenotransplantation. However not all observations seen in rodents faithfully recapitulate the human situation This study aimed to establish a humanized mouse model of xenotransplantation, which mimics xenograft rejection in the context of the human immune system. METHODS: NOD-SCID IL2rγ -/- mice were transplanted with neonatal porcine islet cell clusters (NICC) followed by reconstitution of human peripheral blood mononuclear cells (pBMC). Human leukocyte engraftment and islet xenograft rejection were confirmed by flow cytometric and histological analyses. RESULTS: In the absence of human pBMC, porcine NICC transplanted into NOD-SCID IL2rγ -/- mice revealed excellent graft integrity and endocrine function. Human pBMC demonstrated a high level of engraftment in NOD-SCID IL2rγ -/- mice. Reconstitution of NICC recipient NOD-SCID IL2rγ -/- mice with human pBMC led to the rapid destruction of NICC xenografts in a pBMC number-dependent manner. CONCLUSIONS: Human pBMC-reconstituted NOD-SCID IL2rγ -/- mice provide an ideal model to study human immune responses in xenotransplantation. Studies based on this humanized mouse model will provide insight for improving the outcomes of clinical xenotransplantation.

关键词： humanized mice xenotransplantation neonatal porcine islet cell cluster xenorejection tolerance