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第十三届全国生物材料学术会议

作者： Haiming Sun Ting Zhang Dan Chen Yixia Yin Qingzhi Wu Shipu Li State Key Laboratory of Advanced Technology for Materials Synthesis and Processing and Biomedical Materials and Engineering Center Wuhan University of Technology Wuhan 430070China

Superparamagnetic FePt nanoparticles (NPs) have attracted considerable attention due to their extremely promising potentials as the diagnostic and therapeutic reagent in biomedical *** the present study, we developed a facile route to synthesize water-soluble FePtNPsabout 4 nm in diameter and oil-soluble FePtNPs about 6 nm in diameter using amino acids and oleic acid/oleylamine as the capping reagent, *** component, size and magnetic property of FePt NPs were tuned through adjusting the reactant molar ***, the anticancer activities of FePt NPs were evaluated using different brain tumor cell lines (such as U251, U87, H4) as the *** growth prohibition of tumor cells by NPs was measured through MTT assay, while the interaction of NPs and tumor cells was observed through transmission electron microscopy (TEM).The results show that FePt NPs synthesize by oleic acid/oleylamine shows better cytotoxicity toward brain tumor cells than L-cysteine-synthesized FePt *** cellular uptake, intracellular trafficking, and uptake pathways of FePt NRs in three cells were *** conclusion,we developed a facile synthesis of water-soluble superparamagnetic FePt NPs with the different component and the different anticancer activity of FePt NPs on Human brain tumor cells were *** results provide a promising potential of superparamagnetic FePt NPs as the multifunctional diagnostic and therapeutic reagent in biomedical fields.

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Annealing effects on structure and mechanical properties of CoCrFeNiTiAlx high-entropy alloys

Annealing effects on structure and mechanical properties of ...

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International Symposium on Multifunctional Ceramic materials Based on Nanotechnology, ISMCN 2010

作者： Zhang, K.B. Fu, Z.Y. Zhang, J.Y. Wang, W.M. Lee, S.W. Niihara, K. State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Wuhan 430070 China Department of Materials Engineering SunMoon University Asan ChungNam 336-708 Korea Republic of Extreme Energy-Density Research Institute Nagaoka University of Technology 1603-1 Nagaoka Niigata 940-2188 Japan

Novel CoCrFeNiTiAlx(x:molar ratio, other elements are equimolar) high-entropy alloys were prepared by vacuum arc melting and these alloys were subsequently annealed at 1000°C for 2 h. The annealing effects on structure and mechanical properties were investigated. Compared with the as-cast alloys, there are many complex intermetallic phases precipitated from the solid solution matrix in the as-annealed alloys with Al content lower than Al1.0. Only simple BCC solid solution structure appears in the as-annealed Al 1.5 and Al2.0 alloys. This kind of alloys exhibit high resistance to anneal softening. Most as-annealed alloys possess even higher Visker hardness than the as-cast ones. The as-annealed Al0.5 alloys shows the highest compressive strength while the Al0 alloy exhibits the best ductility, which is about 2.6 GPa and 13%, respectively. The CoCrFeNiTiAlx high-entropy alloys possess integrated high temperature mechanical property as well.

关键词： Vacuum applications

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Effect of CuO on Microstructure and Microwave Dielectric Properties of CaTiO3-Ca(Zn1/3Nb2/3)O3 Ceramics System

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MRS Online Proceedings Library (OPL) 2011年第1期966卷 0966-T10-06-0966-T10-06页

作者： Hongtao Yu Hua Hao Hanxing Liu Zhongqing Tian yuhongtao2001@*** Wuhan University of Technology State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Luoshi Road 122# Wuhan 430070 China People's Republic of 86-27-87864681 86-27-87651779 haohuayang@*** Wuhan University of Technology State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan 430070 China People's Republic of lhxhp@*** Wuhan University of Technology State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan 430070 China People's Republic of tzqmail@*** Chongqing Institute of Technology Chongqing 400050 China People's Republic of

The effect of CuO on the microstructure and microwave dielectric properties of the CaTiO3-Ca(Zn1/3Nb2/3)O3 ceramics prepared by the conventional solid-method has been investigated. Doped with the 0.5∼1.25wt% CuO powder, the system of which the sintering temperatures were lowered exhibited the orthorhombic perovskite. It can effectively promote the microwave dielectric properties of the 0.3CaTiO3-0.7Ca(Zn1/3Nb2/3)O3 system at lower sintering temperature at the level of 1.0wt% CuO additive. The quality factor increases from 10860 to 13900GHz and not any significant change was observed in the TCF value with fixed CuO additive at different sintering temperature.

关键词： ceramic dielectric properties morphology

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Microstructures of Nanotubes Reinforced Alumina Fabricated by Two Fast-Sintering Methods

Microstructures of Nanotubes Reinforced Alumina Fabricated b...

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International Symposium on Multifunctional Ceramic materials Based on Nanotechnology, ISMCN 2010

作者： Huang, L.W. Fu, Y. Wang, H. Lee, S.W. Niihara, K. State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Wuhan 430070 China Department of Environmental Engineering Sun Moon University Chungnam 336-708 Korea Republic of Extreme Energy-Density Research Institute Nagaoka University of Technology Niigata 940-2188 Japan

Spark plasma sintering (SPS) and Self-propagating High-temperature synthesis/ quick pressing (SHS/QP) methods were used to fabricate nanotubes reinforced alumina. The difference in microstructure was discussed. In the SHS/QP process, the maximum densification temperature is 1660°C and the heating rate is about 1600°C /min. The whole densification process in SHS/QP is very short, which is much beneficial to protect the nanotubes and restrain the growing of grains. The fracture toughness of the sample prepared by SHS/QP is up to 4.9MPam1/2 for 1mass% CNTs/Al2O3 composites, which shows excellent toughening effects of nanotubes.

关键词： Microstructure

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Mode-locked operation of an erbium-doped fiber laser using a self-assembled graphene membrane after excitation of Q-switched pulse

Mode-locked operation of an erbium-doped fiber laser using a...

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European Quantum Electronics Conference, EQEC 2011

作者： Gui, Lili Zhang, Wei Li, Xiao Xiao, Xiaosheng Zhu, Hongwei Wang, Kunlin Wu, Dehai Yang, Changxi State Key Laboratory of Precision Measurement Technology and Instruments Department of Precision Instruments Tsinghua University Beijing 100084 China Key Laboratory for Advanced Manufacturing by Materials Processing Technology Department of Mechanical Engineering Tsinghua University Beijing 100084 China

ISBN: (纸本)9781457705328

Graphene is considered to be an excellent fast saturable absorber (SA) with a broad operation bandwidth due to its ultrafast carrier dynamics and linear energy-momentum relation near the Dirac point [1]. Since Bao, Zhang, et al. employed it to successfully mode-lock a fiber laser for the first time [2], extensive efforts [3] have been devoted to developing this popular field, i.e., graphene-based ultrafast photonics.

关键词： Graphene

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NiCr基掺杂Co-Fe体系红外辐射涂层的制备与研究

NiCr基掺杂Co-Fe体系红外辐射涂层的制备与研究

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第十五届国际热喷涂研讨会(ITSS’2012)、第十六届全国热喷涂年会(CNTSC’2012)、中国表面工程协会热喷涂专业委员会四届五次(扩大)会

作者： Yunyun LIU 刘芸芸 Xudong CHENG 程旭东 Xiaoming MENG 孟晓明 Honavu XIANG 向泓宇 Yi YANG 杨懿 Pu ZHANG 张朴 Gan LUO 罗干武汉理工大学材料复合新技术国家重点实验室武汉430070 State Key Laboratory of Advanced Technology for Materials Synthesis and Progressing Wuhan University of TechnologyWuhan 430070China

在Ni-Cr体系中掺杂CoO、Fe3O4组分并经料浆喷雾干燥工艺制备团聚型粉末,在1200℃高温焙烧产生尖晶石结构,用等离子喷涂工艺在纯铜基体表面制备红外辐射涂层.利用XRD、SEM对涂层的表面与结构进行研究,同时进行涂层的红外辐射性能测试.结... 详细信息

在Ni-Cr体系中掺杂CoO、Fe3O4组分并经料浆喷雾干燥工艺制备团聚型粉末,在1200℃高温焙烧产生尖晶石结构,用等离子喷涂工艺在纯铜基体表面制备红外辐射涂层.利用XRD、SEM对涂层的表面与结构进行研究,同时进行涂层的红外辐射性能测试.结果表明,经高温焙烧后的粉末主相为AB2O4(即NiCr2O4)尖晶石型结构,掺杂适量的CoO、Fe3O4辐射率分别达到0.89、0.88,提高了涂层的辐射率.

关键词：等离子喷涂尖晶石结构红外光谱辐射率

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几种中高温太阳能选择性吸收涂层制备工艺的比较

几种中高温太阳能选择性吸收涂层制备工艺的比较

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第十五届国际热喷涂研讨会(ITSS’2012)、第十六届全国热喷涂年会(CNTSC’2012)、中国表面工程协会热喷涂专业委员会四届五次(扩大)会

作者： ZHANG Pu 张朴 CHENG Xu-dong 程旭东 GONG Dian-qing 宫殿清 XIANG Hong-yu 向泓宇 LIU Min-zhi 孟晓明柳敏志 State Key Laboratory of Advanced Technology for Materials Synthesis and Progressing Wuhan University of TechnologyWuhan 430070China 武汉理工大学材料复合新技术国家重点实验室武汉430070

本文介绍了几种中高温太阳能选择性吸收涂层制备工艺，通过实例分析了溶胶凝胶法、多弧离子镀法和超音速火焰喷涂法各自优缺点及不同适用环境。超音速火焰喷涂法耐候性优良，能够在中高温条件下使用，成本较低，通过在表面采用Al2O3镀... 详细信息

本文介绍了几种中高温太阳能选择性吸收涂层制备工艺，通过实例分析了溶胶凝胶法、多弧离子镀法和超音速火焰喷涂法各自优缺点及不同适用环境。超音速火焰喷涂法耐候性优良，能够在中高温条件下使用，成本较低，通过在表面采用Al2O3镀膜处理，试涂层的选择性吸收性能提升，具有推广意义。

关键词：多弧离子镀法选择性吸收涂层溶胶凝胶法超音速火焰喷涂法性能分析

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synthesis of superparamagnetic FePt nanoparticles and their anticancer activities on brain tumor cells

Synthesis of superparamagnetic FePt nanoparticles and their ...

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第十一届全国生物无机化学学术会议

作者： Haiming Sun Ting Zhang Mingyan Dong Dan Chen Yixia Yin Qingzhi Wu Shipu Li State Key Laboratory of Advanced Technology for Materials Synthesis and Processing and BiomedicalMaterials and Engineering Center Wuhan University of Technology Wuhan 430070 China

Superparamagnetic FePt nanoparticles (NPs) have attracted considerable attention due to their extremely promising potentials as the diagnostic and therapeutic reagent in biomedical *** the present study,water-soluble FePt NPs about 4 nm in diameter and oil-soluble FePt NPs about 6 nm in diameter were successfully synthesized using amino acids and oleic acid/oleylamine as the capping reagent,*** component,size and magnetic property of FePt NPs were tuned through adjusting the reactant molar ***,the anticancer activities of FePt NPs with different capping reagents were evaluated using different brain tumor cell lines (such as U251,U87,H4) as the *** growth prohibition of tumor cells by NPs was measured through MTT assay,while the interaction of NPs and tumor cells was observed through transmission electron microscopy (TEM).The results show that FePt NPs capped with oleic acid/oleylamine displayed better cytotoxic effects toward brain tumor cells than L-cysteine-capped FePt *** is interesting that the cellular uptake of FePt NPs seem to be similar in three cell *** conclusions,we synthesized successfully superparamagnetic FePt NPs with the different component using different capping reagents,which displayed different anticancer activities on Human brain tumor *** results also provide a promising potential of superparamagnetic FePt NPs as the multifunctional diagnostic and therapeutic reagent in biomedical fields.

关键词： FePt superparamagnetic anticancer activities brain tumor cells

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Modeling and simulaton of process-structure-property of magnesium alloy casting

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作者： Han, Zhiqiang Huo, Liang Liu, Baicheng Key Laboratory for Advanced Materials Processing Technology Department of Mechanical Engineering Tsinghua University Beijing 100084 China State Key Laboratory of Automotive Safety and Energy Tsinghua University Beijing 100084 China

ISBN: (纸本)9780470943199

The increasing needs from industry for efficient and economic manufacturing lead to the emergence and rapid development of integrated computational materials engineering (ICME) that integrates manufacturing simulation, advanced materials models and component performance analysis into a whole comprehensive framework, which can be used to optimize the manufacturing process, materials selection and product design. Modeling and simulation of process-structure- property is one of the primary themes of ICME. The present paper presents some latest research and development of modeling and simulation of magnesium (Mg) alloy castings at different length scales for predicting the microstructure and mechanical properties of the casting components, where macro-scale simulation of mold filling and solidification, micro-scale model of microstructure evolution during solidification, and mechanical property model based on structure information are demonstrated. The macro-scale simulation of the casting process took the process parameters as initial inputs and provided thermal history of the whole casting for micro-scale modeling. In the micro-scale modeling, the dendritic structure of primary phase was simulated in both two dimensions (2D) and three dimensions (3D) using a modified cellular automaton (MCA) model that takes heterogeneous nucleation, solute diffusion, interface curvature, and growth anisotropy into account. In the mechanical property modeling, main strengthening mechanisms of Mg-Al series cast Mg alloy were considered. Using the current model the yield strength distribution of Mg alloy wheel casting for automobile was predicted. Material property tests were carried out and the capability of the model was evaluated.

关键词： Magnesium alloys

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Fuzzy control system for consumable DE-GMAW process

Fuzzy control system for consumable DE-GMAW process

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2011 8th International Conference on Fuzzy Systems and Knowledge Discovery, FSKD 2011, Jointly with the 2011 7th International Conference on Natural Computation, ICNC'11

作者： Fan, Ding Lu, Lihui Shi, Yu Huang, Jiankang State Key Laboratory of Gansu Advanced Non-ferrous Materials Lanzhou University of Technology Lanzhou Gansu Province730050 China Key Laboratory of Non-Ferrous Metal Alloys and Processing Ministry of Education Lanzhou University of Technology Gansu Province 730050 China

ISBN: (纸本)9781612841816

Consumable DE-GMAW is a novel GMAW process with higher greater productivity. However, the consumable DE-GMAW process can hardly maintain stable without a proper control. Aiming at this problem, a rapid prototyping control platform was established for consumable DE-GMAW with a designed fuzzy controller using real-time target environment based on xPC. The developed experimental system makes it possible to sense, observe and control the consumable DE-GMAW process real-timely. On this basis, experiments were carried out to verify the feasibility of the fuzzy control system. The results show that good welding bead shape and stable welding process can be obtained through the developed fuzzy control system in consumable DE-GMAW process. This fuzzy control system lays a foundation for the consumable DE-GMAW process to become a practical manufacturing process. © 2011 IEEE.

关键词： Fuzzy control

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