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33篇 您的检索式:作者名="LONG WeiMin"
    题名 作者 年代 出处 被引量
1Effect of Gold Nanoparticles on the Photocatalytic and Photoelectrochemical Performance of Au Modified BiVO_4显示文摘An efficient visible light driven photocatalyst, gold nanoparticles(NPs) modified Bi VO_4(Au/Bi VO_4), has been synthesized by deposition-precipitation with urea method. Au/Bi VO_4 exhibits enhanced photocatalytic activity for phenol degradation underλ>400 nm irradiation but negligible activity underλ>535 nm,indicating that the surface plasmon resonance(SPR) effect is too weak for organic photodegradation. According to the photoelectrochemical results of the porous powder electrodes of Bi VO_4 and Au/Bi VO_4, the SPR effect of Au NPs has been assessed. The role of Au NPs as electron sinks or sources, which is controllable by incident photon energy and applied potentials, has been discussed.Mingce Long Jingjing Jiang Yan Li Ruqiong Cao Liying Zhang Weimin Cai 2011Nano-Micro Letters2011,3,3:8
2Preparation and Characterization of Freestanding Hierarchical Porous TiO_2 Monolith Modified with Graphene Oxide显示文摘Catalyst recovery is one of the most important aspects that restrict the application of Ti O_2 photocatalyst. In order to reduce restrictions and improve the photocatalytic efficiency, a hierarchical porous Ti O_2 monolith(PTM) with well-defined macroporous and homogeneous mesoporous structure was prepared by using a sol-gel phase separation method. P123 was used as the mesoporous template and graphene oxide was applied to increase the activity and integrity of the monolithic Ti O_2. According to scanning electron microscopy and the Barrett-Joyner-Halenda measurements, PTM_3 is mainly composed of 10 nm anatase crystallines with3.6 nm mesopores and 2-8 μm macropores. Further characterization suggests carbon and nitrogen have been maintained in the PTM during calcinations so as to induce the visible light activity. The PTM with 0.07 wt%graphene oxide dosage shows high efficiency for methyl orange(MO) decolorization under both full spectrum and visible light irradiation(λ >400 nm). Besides, the monolith remains intact and has good photocatalytic stability after four cyclic experiments.Lei Wan Mingce Long Dongying Zhou Liying Zhang Weimin Cai 2012Nano-Micro Letters2012,4,2:3
3Direct observation of interlayer coherent acoustic phonon dynamics in bilayer and few-layer PtSe2显示文摘This work reports the real-time observation of the interlayer lattice vibrations in bilayer and few-layer PtSe_2 by means of the coherent phonon method. The layer-breathing mode and standing wave mode of the interlayer vibrations are found to coexist in such a kind of group-10 transition metal dichalcogenides(TMDCs). The interlayer breathing force constant standing for perpendicular coupling(per effective atom) is derived as 7.5 N/m,2.5 times larger than that of graphene. The interlayer shearing force constant is comparable to the interlayer breathing force constant, which indicates that PtSe2 has nearly isotropic interlayer coupling. The low-frequency Raman spectroscopy elucidates the polarization behavior of the layer-breathing mode that is assigned to have A1 g symmetry. The standing wave mode shows redshift with the increasing number of layers, which successfully determines the out-of-plane sound velocity of PtSe2 experimentally. Our results manifest that the coherent phonon method is a good tool to uncover the interlayer lattice vibrations, beyond the conventional Raman spectroscopy limit. The strong interlayer interaction in group-10 TMDCs reveals their promising potential in high-frequency(~terahertz) micro-mechanical resonators.XIN CHEN SAIFENG ZHANG LEI WANG YI-FAN HUANG HUIYAN LIU JIAWEI HUANG NINGNING DONG WEIMIN LIU IVAN MKISLYAKOV JEAN MICHEL NUNZI LONG ZHANG JUN WANG 2019Photonics Research2019,7,12:3
4热浸镀Sn层对BCu68Zn钎料性能的影响显示文摘以BCu68Zn钎料为研究对象,在其表面热浸镀锡,借助综合热分析仪、润湿试验炉、数字电流电桥等检测设备分析了Sn镀层对钎料熔化温度、铺展性能、电阻率的影响。结果表明:BCu68Zn钎料表面热浸镀Sn能显著降低其固相线和液相线温度;BCu68Zn钎料表面热浸镀Sn可显著提高其润湿性能,基体钎料的铺展面积为229.83 mm^2,而在热浸镀Sn含量为6.4%时,钎料的铺展面积可达到299.52mm^2;钎料电阻率达到7.33×10^(-8)Ω·m,稍高于基体钎料的电阻率6.67×10^(-8)Ω·m,表面热浸镀Sn层使钎料电阻率增大,导电性变弱。董博文 邓小君 何鹏 Long Weimin Zhang Qingke Wang Xingxing 2015焊接2015,,7:2
5Effect of calcium on the microstructure and mechanical properties of brazed joint using Ag–Cu–Zn brazing filler metal显示文摘Fangfei Sui Weimin Long Shengxin Liu Guanxing Zhang Li Bao Hao Li Yong Chen 2013Materials and Design2013,,:2
6Efficient photocatalytic degradation of phenol over Co3 O4/ BiVO4 composite under visible light irradiation 显示文摘LONG Mingce CAI Weimin CAI Jun 2007Chem- inform2007,38,20:1
7Low temperature hydrothermal synthesis of N-doped TiO 2 photocatalyst with high visible-light activity显示文摘Deyong Wu Mingce Long Weimin Cai Chao Chen Yahui Wu 2010Journal of Alloys and Compounds2010,,2:1
8Multi-scale CFD simulation of gas-solid flow in MIP reactors with a structure-dependent drag model 显示文摘Lu Bona Wang Wei Li Jinghai Wang Xianghui Gao Shiqiu Lu Weimin Xu Youhao Long Jun 2007Chemical Engineering Science2007,62,:1
9Study on Ann-based multi-step prediction model of short-term climatic variation显示文摘JIN LONG JU WEIMIN MIAO QILONG 2000Advances Atmosphere Sciences2000,17,1:1
10溃疡性结肠炎内镜严重度指数(UCEIS)预测溃疡性结肠炎患者行储袋成形术的截点值:多中心长期随访研究结果显示文摘背景:全结直肠切除回肠储袋肛管吻合(IPAA)是溃疡性结肠炎(UC)患者的首选外科治疗术式。溃疡性结肠炎内镜严重度指数(UCEIS)用以预测UC患者的IPAA手术需求,目前尚缺乏数据。本研究旨在建立明确UCEIS预测UC患者IPAA手术需求的截点值。方法:对1986年6月至2020年3月间两个中心收治的UC患者进行回顾性分析。基于入院后首次结肠镜检查结果进行UCEIS评分。采用受试者操作特征曲线分析确定UCEIS评分预测IPAA需求的截点值。结果:293例UC患者纳入研究,中位UCEIS为4分。13年随访期间,80例(28.3%)患者接受外科治疗,其中75例(93.8%)行IPAA手术,5例(6.2%)行次全结肠切除加永久性造口。采用6分作为截点值,UCEIS对IPAA手术需求的预测价值最高,曲线下面积为0.769(P<0.001),灵敏度和特异度分别为72.0%和81.8%。UCEIS≥6是需要行IPAA手术(P<0.001)和恶性转化(P=0.010)的独立预测因素。UCEIS≥6的患者无IPAA生存时间显著短缩(P<0.001)。结论:UCEIS≥6或可作为IPAA手术决策的依据,推荐对这些UC患者行手术治疗以减少恶性转化的发生率。Weimin Xu Weijun Ou Jihong Fu Yubei Gu Long Cui Jie Zhong Peng Du 2021Gastroenterology Report2021,9,5:1
11Synthesis, characterization and luminescence properties of Y-doped and Tb-doped ZnO nanocrystals显示文摘Tiekun Jia Weimin Wang Fei Long Zhengyi Fu Hao Wang Qingjie Zhang 2009Materials Science & Engineering B2009,,3:1
12Measurement of the mass transfer coefficient at workpiece surfaces in heat treatment furnaces显示文摘Gao Weimin Kong Lingxue Long John M 2009Journal of Materials Processing Technology2009,209,1:1
13Multi-scale CFD simulation of gas-solid flow in MIP reactors with a structure-dependent drag model 显示文摘Lu Bona Wang Wei Li Jinghai Wang Xianghui Gao Shiqiu Lu Weimin Xu Youhao Long Jun 2007Chemical Engineering Science2007,62,181920:1
14Study on Ann- Based Multi- Step Prediction Model of Short- Term Climatic Variation 显示文摘Jin Long Ju Weimin Miao Qilong 2000Advanccs in Atmospheric Sciences2000,17,1:1
15Ef-ficient Photocatalytic Degradation of Phenol OverCo3O4/BiV04 Composite Under Visible Light Irradiation显示文摘LONG Mingce CAI Weimin CAI Jun 2006J Phys Chem B2006,110,20:1
16Effects of Gaaddition on microstructure and properties of Sn-Ag-Cu/Cu solderjoints显示文摘Qingke Zhang Weimin Long Xinquan Yu 2015Journal of Alloys and Compounds2015,622,:1
17显示文摘Fei Long Wang Weimin Tao Huachao 2010Materials Letters2010,64,1:1
18Stress corrosion crack of ZnAll5 alloys in hot and humid environment 显示文摘Yan Xinqi Liu Shengxin Long Weimin el al 2013Materials Letters2013,93,:1
19Efficient photocatalytic degradation of phenolover Co3O4/BiVO4 composite under visible light irradiation显示文摘Long Mingce Cai Weimin Cai Jun 2006J Phys Chem B2006,110,20:1
20Synthesis, characterization and luminescence properties of Y-doped and Tb-doped ZnO nanocrystals 显示文摘Jia Tiekun Wang Weimin Long Fei Fu Zhengyi Wang Hao Zhang Qingjie 2009Materials Science and Engineering B2009,162,:1
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