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36篇 您的检索式:作者名="Alan Meng"
    题名 作者 年代 出处 被引量
1SiC nanowires with thickness-controlled SiO2 shells: Fabrication, mechanism, reaction kinetics and photoluminescence properties显示文摘Zhenjiang Li Jian Zhao Meng Zhang Jiyin Xia Alan Meng 2014Nano Research2014,7,4:8
2Boosted electromagnetic wave absorption performance from synergistic induced polarization of SiC_(NWs)@MnO_(2)@PPy heterostructures显示文摘In the last decade,electromagnetic pollution has caused people’s considerable attention.Developing absorbing material with low cost,lightweight,simple preparation,and high electromagnetic attenuation efficiency has become a feasible means to deal with this problem.In this work,core–shell SiC_(NWs)@MnO_(2)@PPy(NWs:nanowires,PPy:polypyrrole)heterostructures composed of SiC nanowires core,MnO_(2)nanosheets inter-layer,and PPy coating were successfully prepared through chemical vapor deposition and two-step electrodeposition process.Taking advantage of the interfacial polarization and dipole polarization,the obtained product displays excellent electromagnetic wave absorption performances with the minimum reflection loss(RLmin)of−50.59 dB when the matching thickness is 2.41 mm,and the optimal effective absorption bandwidth(EAB)value reaches to 6.64 GHz at a matching thickness of 2.46 mm,revealing that the SiC_(NWs)@MnO_(2)@PPy nanocomposite could be served as a promising electromagnetic wave absorbing material.On the basis of systematic analysis concerning the electromagnetic parameters,the dissipation process of the incident electromagnetic wave was demonstrated reasonably,which may provide a referable preparation strategy for novel heterostructures,especially nonmagnetic lightweight absorbing material.Meng Zhang Laibin Zhao Wenxin Zhao Ting Wang Liying Yuan Yuying Guo Yuxin Xie Tingting Cheng Alan Meng Zhenjiang Li 2023Nano Research2023,16,2:4
3Evaluation of endocrine disruption and dioxin-like effects of organic extracts from sewage sludge in autumn in Beijing, China显示文摘污水污泥的有效处理和利用上的学习最近是在中国种兴趣的目标。然而,潜在的风险与有毒的 organics,重金属和病原的微生物由于它的污染与污泥的使用被联系。在这研究,一个屏蔽评价在在北京从 17 不同污水处理植物收集的污水污泥样品上被进行,基于批在 vitro 生物鉴定,包括一套 recombinant 基因酵母为内分泌的混乱的试金,并且用为芳基烃受体( Ah-R )的 H4IIE 房间的 ethoxy resorufin-O-deethylase (侵蚀)试金论战的活动。我们的结果建议了那雌激素受体的中等层次论战的活动(0.9 ng E2 愠映杯吗?Cao LIU Yiping XU Mei MA Bingbin HUANG Jingdong WU Qingyi MENG Zijian WANG Robert Alan GEARHEART 2014Frontiers of Environmental Science & Engineering2014,8,3:4
43D urchin like V-doped CoP in situ grown on nickel foam as bifunctional electrocatalyst for efficient overall water-splitting显示文摘Cobalt phosphide (CoP) is considered to be a potential candidate in the field of electrocatalysis due to its low-cost, abundant resources and high electrochemical stability. However, there is a great space for further improvement of its electrocatalytic performance since its charge transfer rate and catalytic activity have not reached a satisfactory level. Herein, we design and fabricate a three dimensional urchins like V-doped CoP with different amounts of V-doping on nickel foam electrode. The V-doped CoP/NF electrode with optimized amounts of V-doping (10%) exhibits outstanding hydrogen evolution reaction (HER) performance under universal-pH conditions and preeminent oxygen evolution reaction (OER) performance in alkaline media. Notably, the assembled water-splitting cell displays a cell voltage of only 1.53 V at 10 mA·cm−2 and has excellent durability, much better than many reported related bifunctional catalysts. The experiment results and theoretical analysis revealed that vanadium atoms replace cobalt atoms in CoP lattice. Vanadium doping can not only raise the density of electronic states near the Fermi level enhancing the conductivity of the catalyst, but can also optimize the free energy of hydrogen and oxygen-containing intermediates adsorption over CoP, thus promoting its catalytic activity. Moreover, the unique nanostructure of the catalyst provides the various shortened channels for charge transfer and reactant/electrolyte diffusion, which accelerates the electrocatalytic process. Also, the in situ growth strategy can improve the conductivity and stability of the catalyst.Hongyao Xue Alan Meng Haiqin Zhang Yusheng Lin Zhenjiang Li Chuansheng Wang 2021Nano Research2021,14,11:4
5An Equivalent Substitute Strategy for Constructing 3D Ordered Porous Carbon Foams and Their Electromagnetic Attenuation Mechanism显示文摘Three-dimensional(3D)ordered porous carbon is generally believed to be a promising electromagnetic wave(EMW)absorbing material.However,most research works targeted performance improvement of 3D ordered porous carbon,and the specific attenuation mechanism is still ambiguous.Therefore,in this work,a novel ultra-light egg-derived porous carbon foam(EDCF)structure has been successfully constructed by a simple carbonization combined with the silica microsphere template-etching process.Based on an equivalent substitute strategy,the influence of pore volume and specific surface area on the electromagnetic parameters and EMW absorption properties of the EDCF products was confirmed respectively by adjusting the addition content and diameter of silica microspheres.As a primary attenuation mode,the dielectric loss originates from the comprehensive effect of conduction loss and polarization loss in S-band and C band,and the value is dominated by polarization loss in X band and Ku band,which is obviously greater than that of conduction loss.Furthermore,in all samples,the largest effective absorption bandwidth of EDCF-3 is 7.12 GHz under the thickness of 2.13 mm with the filling content of approximately 5 wt%,covering the whole Ku band.Meanwhile,the EDCF-7 sample with optimized pore volume and specific surface area achieves minimum reflection loss(RL_(min))of−58.08 dB at 16.86 GHz while the thickness is 1.27 mm.The outstanding research results not only provide a novel insight into enhancement of EMW absorption properties but also clarify the dominant dissipation mechanism for the porous carbon-based absorber from the perspective of objective experiments.Meng Zhang Hailong Ling Ting Wang Yingjing Jiang Guanying Song Wen Zhao Laibin Zhao Tingting Cheng Yuxin Xie Yuying Guo Wenxin Zhao Liying Yuan Alan Meng Zhenjiang Li 2022Nano-Micro Letters2022,14,10:3
6Sunlight responsive photocatalysts:AgBr/ZnO hybridna nomaterial显示文摘A novel high-effective sunlight-induced AgBr/ZnO hybrid nanophotocatalyst has been synthesized and it was characterized by different techniques such as X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), transmission electron microscopy (TEM), scanning electron microscopy (SEM) and ultraviolet-visible spectrophotometry (UV-vis). The AgBr/ZnO hybrid nanophotocatalyst has excellent photocatalytic activity for photodegradation of methyl orange (MO) under sunlight irradiation. The MO degradation efficiency for AgBr/ZnO is about 98% after 1 hour under sunlight irradiation. These results suggested that AgBr/ZnO is a promising candidate for the development of highly efficient sunlight photocatalysts. In addition, the photocatalytic mechanism of AgBr/ZnO under sunlight irradiation is illustrated and discussed.MENG ALan QIU YanYan ZHANG LiNa XU Xiao LI ZhenJiang 2012Science China Chemistry2012,55,10:3
7Integer ambiguity resolution in precise point positioning: method comparison显示文摘Jianghui Geng Xiaolin Meng Alan H. Dodson Felix N. Teferle 2010Journal of Geodesy2010,,9:2
8Detection of mycobacterial and viral DNA in Kikuchi-Fujimoto disease: an analysis of 153 Chinese pediatric cases显示文摘Dear Editor,Kikuchi-Fujimoto disease(KFD),or histiocytic necrotizing lymphadenitis,was initially described in 1972 by Drs.Kikuchi and Fujimoto(Shirakusa et al.,1988).The main clinical manifestations are fever and cervical lymphadenopathy with or without pain,sometimes accompanied by tachycardia,nausea and symptomatic infiltrative erythematous lesions.The diagnosis of KFD is usually based on characteristic lymph node histologic findings of coagulative necrosis,histiocytic infiltrate,loss of nodal architecture,Zhe Xu Ying Liu Haijing Li Shufang Meng Alan S.Boyd Charles W.Stratton Lin Ma Yi-Wei Tang 2017Science China(Life Sciences)2017,60,7:2
9Sulfur-deficient Co9S8/Ni3S2 nanoflakes anchored on N-doped graphene nanotubes as high-performance electrode materials for asymmetric supercapacitors显示文摘In this paper,Co9S8/Ni3S2 nanoflakes(NFs)with sulfur deficiencies were grown in-situ on N-doped graphene nanotubes(NGNTs).They were successfully prepared through electrodeposition followed by hydrogenation treatment,which is able to act as a self-supported electrode for asymmetric supercapacitors(ASCs).Combining the defect-rich active materials with highly conductive skeletons,the hybrid electrode N-GNTs@sd-Co9S8/Ni3S2NFs show ultrahigh specific capacity of^304 mA hg^-1 and prominent rate capability(capacity retention ratio of^85%even at 100 Ag^-1),and deliver a long cycling lifespan of^1.9%capacitance loss after 10000 cycles.In addition,an ASC was constructed using the as-synthesized composite electrode as the positive electrode and active carbon(AC)as the negative electrode.The fabricated device shows a high energy density of^45.1 Wh kg^-1 at^3.4 kW kg^-1 and superior cycling stability.This work substantiates a smart strategy to fabricate novel composite electrode materials for next-generation supercapacitors by incorporating riched deficiencies into nanostructures.ZHAO Jian SONG GuanYing YUAN XiangCheng SHEN Tong JIANG QingYan MENG ALan LIN YuSheng LI ZhenJiang LI QingDang 2020Science China(Technological Sciences)2020,63,4:2
10Rapid re-convergences to ambiguity-fixed solutions in precise point positioning显示文摘Jianghui Geng Xiaolin Meng Alan H. Dodson Maorong Ge Felix N. Teferle 2010Journal of Geodesy2010,,12:1
11Optical performance monitoring using artificial neural network trained with asynchronous amplitude histograms 显示文摘Thomas Shun Rong Shen Ke Meng Alan Pak Tao Lau 20101EEE Photonics Technology Letters2010,22,22:1
12Idiopathic pulmonary fibrosis: physiologic tests, quantitative CT indexes, and CT visual scores as predictors of mortality 显示文摘Best Alan C Meng Jiangfeng Lynch Anne M 2008J Radiology2008,246,3:1
13Transport of the sulfated, amidated bile acid, sulfolithocholyltaurine, into rat hepatocytes is mediated by Oatp1 and Oatp2显示文摘Ling-Jie Meng Pijun Wang Allan W. Wolkoff Richard B. Kim Rommel G. Tirona Alan F. Hofmann K.Sandy Pang 2002Hepatology2002,,5:1
14Synthesis and Raman scattering of β-SiC/SiO2 core-shell nanowires显示文摘Alan Meng Li Zhengjiang Zhang Jinli 2007Journal of Crystal Growth2007,308,:1
15Regulation of Phytochrome B Nuclear Localization through Light-Dependent Unmasking of Nuclear-Localization Signals显示文摘Meng Chen Yi Tao Jason Lim Alan Shaw Joanne Chory 2005Current Biology2005,,7:1
16Controllable oxygen vacancies and morphology engineering:Ultra-high HER/OER activity under base–acid conditions and outstanding antibacterial properties显示文摘Introducing vacancy defects and unique morphology is an effective strategy to improve the catalytic performance of transition metal compounds.However,precisely controlling the amount of vacancy defects remains challenging.Here,we propose a facile and efficient hydrothermal accompanying an annealing method to synthesize a series of Mn-doped CoO nanomaterials with controllable oxygen vacancies and unique morphology.The oxygen vacancies amount can be precisely controlled by adjusting the Mndoping content and is positively correlated with catalytic performance.It was found that the oxygen vacancies amount can reach up to 38.2%over the Mn-doped CoO nanomaterials,resulting in ultra-high hydrogen evolution reaction(HER)and oxygen evolution reaction(OER)catalytic activity(HER:25.6 and 37 m V at 10 m A cm^(-2);OER:301 and 322 m V at 50 m A cm^(-2))under both basic and acidic conditions,while reaching 10 m A cm^(-2) for an ultra-low cell voltage of only 1.52 V,which exceeds that of Pt/C/RuO_(2) and all reported non-noble metal oxide catalysts.The DFT calculations reveal oxygen vacancies can optimize H*and HOO*intermediates adsorption free energy,thus improving the HER and OER performance.Interestingly,the Mn-doped CoO with rich oxygen vacancies exhibits excellent antibacterial properties in vitro of biomedicine.This work provides new ideas and methods for the rational design and precise control of vacancy defects in transition metal compounds and explores their potential application value in electrochemical water splitting and biomedical fields.Hongyao Xue Alan Meng Tongqing Yang Zhenjiang Li Chunjun Chen 2022Journal of Energy Chemistry2022,31,8:1
17idiopathic Pulmonary Fibrosis: Physiologic Tests, Quantitative CT Indexes, and CT Visual Scores as Predictors of Mortality显示文摘ALAN C JIANGFENG MENG ANNE M 2008Radiology2008,246,:1
18Rapid Re-Convergences to Ambiguity-Fixed Solutions inPrecise Point Positioning显示文摘GENG JIANG-HUI MENG XIAO-lIN ALAN H DODSON etal 2010Journal of Geodesy2010,84,12:1
19Integrating a global positioning system and accelerometers to monitor the deflection of bridges显示文摘Gethin W R Meng Xiaolin Alan H D 0,,02:1
20Improving the Thermal Stability of Cu_3N Films by Addition of Mn显示文摘Mn-doped Cu_3N films were deposited by cylindrical magnetron sputtering equipment on the common glass at room temperature.The incorporation of Mn can change the preferred growth orientation from Cu-rich plane(111) to N-rich plane(100) due to the improvement of nitridation of Cu.The shrinkage of the lattice and the X-ray photoelectron spectroscopy results reveal that Mn should replace Cu atoms in the lattice or be segregated in the grain boundaries.The thickness of Mn-doped film is smaller than that of the pure one due to the less physisorption of N species among the columnar grains.The mean grain size and the energy gap become larger with increasing Mn concentration to 2.2 at.%and then decrease when the concentration of Mn is higher than 2.2 at.%.Notably,weak doping of 1.5 at.%Mn successfully promotes the decomposed temperature by^50℃.According to the results of XRD and SEM for Mndoped films annealed in vacuum,a possible decomposed mechanism with increasing the annealing temperature is proposed.Xiaoyan Fan Zhenjiang Li Alan Meng Chun Li Zhiguo Wu Pengxun Yan 2015Journal of Materials Science & Technology2015,31,8:1
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