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大功率离子推力器和流动控制单元验证现状及其2000小时寿命试验（英文）

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推进技术 2020年第1期41卷 109-120页

作者： Alexander S Lovtsov Michael y Selivanov Andrey N Kostin Andrey A Shagayda Keldysh Research Center

为了发展基于电推进的大功率空间运输系统,需要开发和验证功率达数十千瓦的电推进系统,深空任务电推进系统优化的比冲要求高达105s。凯尔迪什研究中心(KeRC)正在开发这样的电推进部件。本文概述了35kW离子推力器IT-500及其流动单元FCU-... 详细信息

为了发展基于电推进的大功率空间运输系统,需要开发和验证功率达数十千瓦的电推进系统,深空任务电推进系统优化的比冲要求高达105s。凯尔迪什研究中心(KeRC)正在开发这样的电推进部件。本文概述了35kW离子推力器IT-500及其流动单元FCU-500的验证现状。作为其验证的一部分,完成了IT-500和FCU-500的2000h寿命试验。其中,离子推力器大部分验证条件是:输入功率17.8kW,使用了40kg氙,2018h寿命试验。本文介绍了磁场和离子光学以及石墨格栅开发现状。

关键词：离子推力器大功率放电室离子光学

Intracellular tat of human immunodeficiency virus type 1 activates lytic cycle replication of Kaposi＇s sarcoma-associated herpesvirus. Role of JAK/STAT signaling

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南京医科大学学报（自然科学版） 2007年第5期27卷 514-514页

作者： zeng, y. zhang, X. H. Huang, z. Cheng, L. yao, S. H. Qin, D. Chen, X. y. Tang, Q. Lv, z. G. zhang, L. Lu, C. Nanjing Med Univ Dept Microbiol ＆ Immunol Nanjing 210029 Peoples R China Nanjing Med Univ Lab Reprod Med Nanjing 210029 Peoples R China Nanjing Med Univ Jiangsu Prov Lab Pathogen Biol Nanjing 210029 Peoples R China youjiang Med Coll Nationalities Dept Microbiol ＆ Immunol Bose 533000 Peoples R China A nhui Sci ＆ Technol Univ Coll A nim Sci Fengyang 233100 Peoples R China Univ Chicago Ben May Inst Caac Res Chicago IL 60637 USA

Research on optimal immunization strategies for hepatitis B in different endemic areas in China

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World Journal of Gastroenterology 2000年第3期6卷 392-394页

作者： Li H Wang L Wang SS Gong J zeng XJ Li RC Nong y Huang yK Chen XR Huang zN CAMS & PUMC Inst Basic Med Sci Dept Epidemiol Beijing 100005 Peoples R China

INTRODUCTION At present hepatitis B vaccine immunization is an unique effective measure for controlling hepatitis *** is important o determine optimal immunization

关键词： hepatitis B vaccine immunization strategy cost-benefit analysis china

Dielectronic Resonant Satellite Line Measurement of He-like Argon

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Dielectronic Resonant Satellite Line Measurement of He-like ...

Broadband photomultiplication-type polymer photodetectors and its application in light-controlled circuit

第十五届全国原子与分子物理学术会议

作者： J.Xiao,z.Geng,y.yang,K.yao,D.Lu,y.Fu and y.zou EBIT Laboratory,Institute of Modern Physics,Fudan University,Shanghai 200433 The Key Laboratory of Applied Ion Beam Physics(Ministry of Education),Fudan University,Shanghai 200433

We have measured satellite line for n=2-1 dielectronic recombination(DR) on He-like *** Experiment was carried out on Shanghai EBIT and the x-ray emission spectra due to KLL,KLM,KLN,KLO,KMM,KMN,KNN DR and n=1-2 electron-impact excition of He-like Argon was recorded *** a flat crystal spectrometer and a HpGe *** satellite lines are very important for further studying the laser *** resonance strength at each specific resonance energy was analyzed.

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Science China Chemistry 2022年第8期65卷 1642-1649页

作者： Ming Liu Qunping Fan Kaixuan yang zijin zhao Xingchao zhao zhengji zhou Jian zhang Francis Lin Alex K.-y.Jen Fujun zhang Key Laboratory of Luminescence and Optical Information Ministry of EducationBeijing Jiaotong UniversityBeijing 100044China Department of Chemistry City University of Hong KongHong Kong 999077China State Key Laboratory for Mechanical Behavior of Materials Xi’an Jiaotong UniversityXi’an 710049China Key Lab for Special Functional Materials Ministry of EducationNational and Local Joint Engineering Research Center for High-Efficiency Display and Lighting Technologyand School of MaterialsHenan UniversityKaifeng 475004China Guangxi Key Laboratory of Information Materials School of Material Science and TechnologyGuilin University of Electronic TechnologyGuilin 541004China Department of Materials Science and Engineering City University of Hong KongHong Kong 999077China Department of Materials Science and Engineering University of WashingtonWashington 98195-2120United States Hong Kong Institute for Clean Energy City University of Hong KongHong Kong 999077China

Photomultiplication-type polymer photodetectors(PM-PPDs)were achieved with polymer P3HT as donor and Py3Se-1V as acceptor based on structure of ITO/PEDOT:PSS/active layer/*** optimal weight ratio of P3HT to Py3Se-1V is about 100:*** of isolated electron traps are formed with Py3Se-1V surrounded by P3HT due to rather less content of Py3Se-1V in active layers and about 0.94 e V energy offset between the lowest unoccupied molecular orbitals(LUMO)of P3HT and *** optimal PM-PPDs exhibit broad spectral response from 350 to 950 nm and external quantum efficiency(EQE)values of68,200%at 360 nm,26,400%at 630 nm and 19,500%at 850 nm under-15 V *** working mechanism of PM-PPDs is attributed to the interfacial trap-assisted hole tunneling injection from external *** performance of PM-PPDs can be further improved by incorporating appropriate PMBBDT with high hole mobility as the third *** EQE values of optimal ternary PM-PPDs are increased to 105,000%at 360 nm,40,000%at 630 nm and 31,800%at 850 nm under-15 V bias,benefiting from the enhanced hole transport in ternary active *** optimal ternary PM-PPDs were successfully applied in a light-controlled circuit to turn on or turn off light emitting diode(LED).

关键词： polymer photodetectors photomultiplication external quantum efficiency broadband

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On the double-side probeless friction stir spot welding of AA2198 Al-Li alloy

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Journal of Materials Science & Technology 2019年第5期35卷 784-789页

作者： Q.Chu W.y.Li H.L.Hou X.W.yang A.Vairis C.Wang W.B.Wang State Key Laboratory of Solidification Processing Shaanxi Key Laboratory of Friction Welding Technologies Northwestern Polytechnical University Xi'an 710072 China Beijing Aeronautical Manufacturing Technology Research Institute Beijing 100024 China Mechanical Engineering Department TEI of Crete HeraklionCrete71004 Greece

Double-side probeless friction stir spot welding (DP-FSSW) of AA2198 alloy was conducted to investigate the microstructure and mechanical properties. Compared with common single-side probeless friction stir spot welding (P-FSSW), the plastic strain during DP-FSSW is nearly symmetrical with respect to the bondline to suppress the extension of hook defect, which is detrimental to the joint mechanical strength. With DP-FSSW, a fully metallurgically bonded region has formed due to severe plastic deformation at high temperatures. Tensile/shear tests show that the joint strength could exceed 8 kN, which is comparable to P-FSSW and refill FSSW, and all fractures happen in a shear failure mode as cracks extend along the in terface of two sheets. The microhard ness profile exhibits a uniform distribution along the thick ness direction, in which the hook defect shows the lowest value.

关键词： Friction stir welding Double-side Al-Li alloy Microstructure Mechanical property

Changes of T cell subsets in peripheral blood of patients with Schistosomiasis japonica and their relation to interleukin-1

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中华医学杂志(英文版) 1993年第3期106卷 178-178页

作者： z J Li Q yang y X yang L L zeng S L Li J z Dai H C Wang D D Luo X H Wang Department of Infectious Diseases Union Hospital Tongji Medical University Wuhan.

T cell subsets in peripheral blood were phenotyped in 56 patients with different stages of Schistosomiasis japonica, including 17 with acute, 14 with chronic and 25 with advanced infection. The activity of interleukin-1 (IL-1) produced by peripheral blood mononuclear cells (PBMC) induced by lipopolysaccharide (LPS) in vitro was simultaneously detected in these three groups of patients. It was found that the percentages of CD3+ (total T cell), CD4+ (helper/inducer T cell) and CD8+ (suppressor/cytotoxic T cell) T cell and the level of IL-1 were significantly increased in the group of acuteSchistosomiasis japonica. In the groups of chronic and advancedSchistosomiasis japonica, the proportion of CD3+ T cell, the ratio of CD3+/CD4+ and the level of IL-1 were remarkably reduced, and the percentage of CD8+ T cell was increased. The rate of CD4+ T cell was obviously decreased in cases patients with advancedSchistosomiasis japonica. The percentage of CD4+ T cell was positively correlated to the level of IL-1 in the three groups of patients. These results indicate that T cell subsets and IL-1 may play an important role in the immunoregulation ofSchistosomiasis japonica.

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多孔髓芯减压联合干细胞移植治疗股骨头坏死的早期随访结果

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中国组织工程研究与临床康复 2007年第20期11卷 3936-3939页

作者：杨建平王黎明徐燕桂鉴超喻忠南京医科大学附属南京第一医院骨关节中心江苏省南京市210006

目的:探讨多孔髓芯减压联合自体骨髓干细胞移植治疗股骨头坏死的疗效及临床分析。方法:选择2003-02/2006-12在南京医科大学附属南京第一医院骨关节中心采用多孔髓芯减压联合干细胞移植治疗的股骨头坏死患者22例,共28髋,年龄17～48岁,根... 详细信息

目的:探讨多孔髓芯减压联合自体骨髓干细胞移植治疗股骨头坏死的疗效及临床分析。方法:选择2003-02/2006-12在南京医科大学附属南京第一医院骨关节中心采用多孔髓芯减压联合干细胞移植治疗的股骨头坏死患者22例,共28髋,年龄17～48岁,根据世界骨循环研究学会(ARCO)的国际骨坏死分期标准:Ⅰ期13髋,Ⅱ期11髋,Ⅲ期4髋。长期使用激素史9例,长期酗酒史6例,外伤史5例,原因不明者2例。纳入标准:有髋关节疼痛,功能受限;经髋关节X射线片及MRI检查确诊;ARCO分期Ⅰ～Ⅲ期;患者知情同意并签署知情同意书。排除标准:其他髋关节疾病。自患者髂前上棘处行骨髓穿刺分离与培养骨髓间充质干细胞。取患肢大粗隆下大腿外侧纵向直切口约3.0cm,钝性分离至股骨,在C形臂机引导下自股骨头中心钻入3枚直径4.0mm斯氏针,选位置较好的斯氏针,将直径约8.0mm特制套管在斯氏针的引导下钻至股骨头关节软骨面下1.0～2.0mm,不穿破关节面。将一长注射器针头置入股骨头坏死中心,立即行X射线正侧位摄片,确保针头位于股骨头内,从针头向股骨头内加压注入自体骨髓间充质干细胞悬液1.5～2.0mL。术后12个月随访,每3个月1次,随访时门诊复查,拍正、侧位和蛙式位X射线片,行MRI检查,观察病情变化。使用髋关节Harris评分进行疗效评价,>90分为优,75～90分为良,60～74分为可,<60分评定为差。若Harris评分提高,X射线骨形态变化改善及MRI股骨头坏死区体积变小可认为联合治疗有效。结果:①22例患者均完成随访,进入结果分析。②随访3个月时X射线及MRI检查:2例(2髋)激素引起的Ⅲ期患者股骨头发生进一步变形及塌陷,其余患者在随访期间未出现严重并发症,不良反应及病情恶化。股骨头坏死体积由术前31.07%减小到17.46%。激素组治疗前后股骨头坏死体积差值小于外伤、酗酒组,就本随访资料而言激素组疗效不如外伤及酗酒组。③随访12个月Harris评分:由术前54.3上升到84.6,有较明显提高,其中优7髋(25.0%),良15髋(53.6%),可4髋(14.3%),差2髋(0.07%)。结论:多孔髓芯减压联合干细胞移植是治疗股骨头坏死的一种新手段,尤其适合于年青、ARCO-Ⅰ或Ⅱ期、非激素导致的股骨头坏死治疗。

关键词：髓芯减压股骨头坏死干细胞微创治疗

PREPARATION AND ITS WEAR RESISITANCE OF WC-Co/NiCrBSi METALLURGICAL BONDED COMPOSITE COATING

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Acta Metallurgica Sinica(English Letters) 2000年第3期13卷 857-861页

作者： S.P. Lu y.Guo and L.S. Chen(Institute of Metal Research, The Chinese Academy of Sciences, Shenyang 110015, China) Inst of Metal Research Chinese Acad of Sciences Shenyang China

A WC-Co/NiCrBSi composite coating was made on 42CrMo steel through vacuum brazing technology. The effects of cobalt and WC-17Co content on the properties of the coating were analyzed. The abrasive wear resistance decreased as the cobalt content increased. The tensile strength of the coating increased with the increase of the WC-17Co content and the maximum strength approaches to 184MPa. The abrusive property of the composite coating is better than that of the WC-17Co/NiCrBSi flame overlaying and CoCrW overlaying.

关键词： composite coating brazing bonding strength wear resistance