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| 1 | An Exact Virtual Network Embedding Algorithm Based on Integer Linear Programming for Virtual Network Request with Location Constraint显示文摘Network virtualization is known as a promising technology to tackle the ossification of current Internet and will play an important role in the future network area. Virtual network embedding(VNE) is a key issue in network virtualization. VNE is NP-hard and former VNE algorithms are mostly heuristic in the literature.VNE exact algorithms have been developed in recent years. However, the constraints of exact VNE are only node capacity and link bandwidth.Based on these, this paper presents an exact VNE algorithm, ILP-LC, which is based on Integer Linear Programming(ILP), for embedding virtual network request with location constraints. This novel algorithm is aiming at mapping virtual network request(VNR) successfully as many as possible and consuming less substrate resources.The topology of each VNR is randomly generated by Waxman model. Simulation results show that the proposed ILP-LC algorithm outperforms the typical heuristic algorithms in terms of the VNR acceptance ratio, at least 15%. | Zeheng Yang Yongan Guo | 2016 | China Communications2016，13，8： | 3 |
| 2 | Nanostructured hollow spheres of hydroxyapatite: preparation and potential application in drug delivery显示文摘一个 solvothermal 方法成功地被用来准备 nanostructured hydroxyapatite (哈) 有大约 500 nm 的平均直径和在甘油 / 水的大约 100 nm 的壳厚度的空范围混合了溶剂。传播电子显微镜学(TEM ) 和 HA 空范围的壳实际上是的图象表演与大约 10 nm 的厚度 nanosheets 填写了的地排放扫描电子显微镜学(FESEM ) 。由调节甘油 / 水体积比率,有大约 6 或 20 m 的平均直径的二个其它种 HA 稳固的范围从 nanoflakes 被装配。药交货搬运人被评估的范围的不同类型的性质。布洛芬(IBU ) 被选择为模型药到负担进 HA 样品。nanostructured 哈样品显示出 IBU 的一个慢、支撑的版本。HA 空范围展出了比 HA 稳固的范围并且这样装载能力和更有利的版本性质的更高的药为控制的药版本应用是很有希望的。 | Xiaojing ZHANG Weixin ZHANG Zeheng YANG Zhao ZHANG | 2012 | Frontiers of Chemical Science and Engineering2012，6，3： | 3 |
| 3 | Investigation on Microcrystalline Wax Doped Asphalts by Temperature Control Mode of Atomic Force Microscopy显示文摘Because of its economical and environmentally friendly characteristics, the warm mix asphalt(WMA) is widely used in pavement engineering. However, the lack of microscopic study of WMA brings difficulties in understanding of its mechanical behavior and mechanisms at macroscopic scale which finally hinders the enhancement of WMA's performance. Therefore, this article aims to use atomic force microscopy(AFM), a promising microscopic technique, to investigate the effects of wax-based warm mix agents on asphalt microstructures and micromechanical properties at different temperatures. For simplicity's sake, microcrystalline waxes are selected as an alternative of these wax-based additives. It is shown that the sample preparation method has a vital impact on the morphology of asphalt samples. The effects of microcrystalline wax on asphalt's mechanical properties can be well captured by AFM tests. Results show that the blending of #70, #80 and #90 microcrystalline waxes lowers the modulus(20—60 MPa) of Pen70 asphalt at 25 ℃ while increasing its adhesion force(5—20 n N). The results of this study may shed some light on the comprehension of the effects of wax-based additives on asphalt materials at macroscopic level which can help estimate and predict its actual performance. | Yang Jun Yao Zeheng Gong Minghui Yao Hongmiao | 2016 | China Petroleum Processing & Petrochemical Technology2016，18，4： | 2 |
| 4 | Facile synthesis of α-MnO2 micronests composed of nanowires and their enhanced adsorption to Congo red显示文摘在这份报纸, -MnO2 micronests nanowires 创作了经由 MnSO4 的热水的反应被制作吗?? | Weixin ZHANG | 2014 | Frontiers of Chemical Science and Engineering2014，8，1： | 2 |
| 5 | Fast and highly reversible Na^(+)intercalation/extraction in Zn/Mg dual-doped P2-Na_(0.67)MnO_(2)cathode material for high-performance Na-ion batteries显示文摘P2-type layered Na_(0.67)MnO_(2)has been considered to be a promising candidate cathode material for sodium ion batteries.Nevertheless,the undesired phase transitions during operation and the large Na^(+)radius induced sluggish ion diffusion remain the stumbling blocks to realize its high performance.Herein,we propose a Zn/Mg co-doping strategy,which is proved to have bifunctional effects.First,relative to the pristine P2-Na_(0.67)MnO_(2)and the single-ion(Zn/Mg)doped samples,the Zn/Mg dual-doped P2-Na_(0.67)MnO_(2)demonstrates a lower Mn^(3+)/Mn^(4+)ratio and a higher lattice O content,which facilitate the structural stability of the cathode material.More intriguingly,the Zn/Mg co-doping gives rise to enlarged interplanar spacing,which provides spacious ion diffusion channels for fast Na^(+)intercalation/extraction.As a result,the Zn/Mg dual-doped sample exhibits a high Na^(+)diffusion coefficient and a solid-solution reaction during charge/discharge,with a cell volume change determined to be only 0.55%.Taking advantages of the above favorable features,the Zn/Mg dual-doped P2-Na_(0.67)MnO_(2)demonstrates a high rate performance with 67.2 mAh·g^(-1)delivered at 10 C and a decent cycling stability with a capacity retention of 93.8%achieved at 1 C after 100 cycles.This work introduces the Zn/Mg co-doping strategy to simultaneously improve the cycling stability and rate capability of P2-Na_(0.67)MnO_(2),which may offer a promising avenue for further performance enhancement of the layered Na-ion batteries cathode materials. | Xiaoqin Huang Deli Li Haijian Huang Xiao Jiang Zeheng Yang Weixin Zhang | 2021 | Nano Research2021，14，10： | 2 |
| 6 | Controlled sy- nthesis of CuO nanostruetures by a simple solution route 显示文摘 | Yang Zeheng Xu Jun Zhang Weixin | 2007 | Journal of Solid State Chemistry2007，180，： | 1 |
| 7 | Facile synthesis of mesoporous MnO 2 /C spheres for supercapacitor electrodes显示文摘 | Yanmei Pan Zhousheng Mei Zeheng Yang Weixin Zhang Bo Pei Hongxu Yao | 2013 | Chemical Engineering Journal2013，，： | 1 |
| 8 | Nanorods of manganese oxides: Synthesis, characterization and catalytic application显示文摘 | Zeheng Yang Yuancheng Zhang Weixin Zhang Xue Wang Yitai Qian Xiaogang Wen Shihe Yang | 2005 | Journal of Solid State Chemistry2005，，3： | 1 |
| 9 | An Optical Humidity Sensor Based on Li3PO4 Hollow Nanospheres 显示文摘 | Zhang Weixin Chen Lingling Yang Zeheng | 2011 | SensActuators B2011，155，1： | 1 |
| 10 | Controlled synthesis of Mn 3 O 4 nanocrystallites and MnOOH nanorods by a solvothermal method显示文摘 | Weixin Zhang Zeheng Yang Yi Liu Shupei Tang Xiaozhao Han Min Chen | 2004 | Journal of Crystal Growth2004，，1： | 1 |
| 11 | Magnetic CoFe204 -Grapheue Hybrids: Facile Synthesis, Characterization, and Catalytic Properties 显示文摘 | Yunjin Yao Zeheng Yang Dawei Zhang Wenehao Peng Hongqi Sun Shaobin Wang | 2012 | I&EC reserrch2012，51，： | 1 |
| 12 | Large-scale synthesis of β-MnO 2 nanorods and their rapid and efficient catalytic oxidation of methylene blue dye显示文摘 | Weixin Zhang Zeheng Yang Xue Wang Yuancheng Zhang Xiaogang Wen Shihe Yang | 2005 | Catalysis Communications2005，，6： | 1 |
| 13 | Large-scale synthesis of β -MnO2 nanorods and their rapid and efficient catalytic oxidation of methylene blue dye 显示文摘 | Weixin Zhang Zeheng Yang Xue Wang | 2006 | Catalysis Communications2006，，7： | 1 |
| 14 | In-situ design and construction of lithium-ion battery electrodes on metal substrates with enhanced performances:A brief review显示文摘For the ever-growing demand of advanced lithium-ion batteries, it is highly desirable to grow self-supported micro-/nanostructured arrays on metal substrates as electrodes directly. The in-situ growth of electrode materials on the conducting substrates greatly simplifies the electrode fabrication process without using any binders or conductive additives. Moreover, the well-ordered arrays closely connected to the current collectors can provide direct electron transport pathways and enhanced accommodation of strains arisen from lithium ion lithiation/delithiation. This article summarizes our recent work on design and construction of lithium-ion battery electrodes on metal substrates. An aqueous solution-based process and a microemulsion-mediated process have been respectively presented to control the kinetic and thermodynamic processes for the micro-/nanostructured array growth on metal substrates, with particular attention to CuO nanorod arrays and microcog arrays successfully prepared on Cu foil substrates. They can be directly used as binder-free electrodes to build advanced lithium-ion batteries with high energy, high safety and high stability. | Weixin Zhang Yingmeng Zhang Zeheng Yang Gongde Chen Guo Ma Qiang Wang | 2016 | Chinese Journal of Chemical Engineering2016，24，1： | 1 |
| 15 | A low temperature synthesis of crystalline B 4 C ultrafine powders显示文摘 | Liang Shi Yunle Gu Luyang Chen Yitai Qian Zeheng Yang Jianhua Ma | 2003 | Solid State Communications2003，，1： | 1 |
| 16 | Controlled synthesis of CuO nanostruetures by a simple solution route 显示文摘 | Yang Zeheng Xu Jun Zhang Weixin | 2007 | Journal of Solid State Chemistry2007，180，： | 1 |
| 17 | A room-temperature synthesis of nanocrystalline vanadium nitride显示文摘 | Luyang Chen Yunle Gu Liang Shi Zeheng Yang Jianhua Ma Yitai Qian | 2004 | Solid State Communications2004，，5： | 1 |
| 18 | Synthesis andcharacterization of CaO nanopods for high temperature C02 capture显示文摘 | Yang Zeheng Zhao Ming Nicholas H Florin | 2009 | Ind Eng Chem Res2009，48，10： | 1 |
| 19 | Enhanced performance of LiFePO 4 through hydrothermal synthesis coupled with carbon coating and cupric ion doping显示文摘 | Bo Pei Qiang Wang Weixin Zhang Zeheng Yang Min Chen | 2011 | Electrochimica Acta2011，，16： | 1 |
| 20 | An optical humidity sensor based on Li3PO4 hollow nanospheres显示文摘 | Zhang Weixin Chen Lingling Yang Zeheng Peng Jing | 2011 | Sensors and Actuators B: Chemical2011，155，： | 1 |
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