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12篇 您的检索式:作者名="Zhong Yueming"
    题名 作者 年代 出处 被引量
1Microstructure and magnetic performance of Ni-substituted high density MnZn ferrite显示文摘The effects of NiO on microstructure and magnetic properties of Mn-Zn ferrite with a nominal composition of Zn0.32Mn0.60-xNixFe2.08O4 were investigated. The calcined powder of Mn-Zn ferrite was characterized by X-ray diffraction (XRD), the fracture surface of Mn-Zn ferrite was checked by scanning electronic microscope (SEM), and then the magnetic properties were measured. As a result, the substitution of Ni can cause the crystal lattice constant of MnZn ferrite to decline, and the grain size to decrease, therefore improve the magnetic performance of MnZn ferrite whose density exceeds 5.0 g·cm-3.YU Zhong LAN Zhongwen CHEN Shengming SUN Yueming SUN Ke 2006Rare Metals2006,25,z1:3
2Effect of sintering process on microstructure and magnetic properties of high frequency power ferrite显示文摘An oxide ceramic process was adopted to prepare high frequency manganese-zinc (MnZn) power ferrite. In combination with the microstructure analysis of material, the influences of sintering process on initial permeability (μi) and high frequency loss in unit volume (Pcv) of MnZn power ferrite were investigated. The results show that in order to obtain fine microstructure and high frequency properties, the preferable sintering temperature and atmosphere are 1230 ℃ and oxygen partial pressure (PO2) of 4%, respectively.SUN Ke LAN Zhongwen CHEN Shengming SUN Yueming YU Zhong 2006Rare Metals2006,25,z1:3
3A highly efficient epoxidation method of olefins with hydrogen peroxide catalyzed by changeable hexadentate 8-quinolinolato manganese (Ⅲ) complexes 显示文摘Zhong Sheng Tan Yueming Fu Zaihui 2008Journal of Catalysis2008,256,1:1
4Intractable ob-stetrics and Gynecology clinical application of显示文摘ChenWenzhong Zhong Yueming Guo Man 2011medical image embolization for massive hemorrhage of the journal2011,4,11:1
5Activation of fly ash and its effects on cement properties 显示文摘Fan Yueming (South China Univ of Technology) Yin Suhong Wen Zhiyun Zhong Jingyu 1999Cement and Concrete Research1999,,:1
6Reconstruction and petroleum geological significance of lithofacies paleogeography and paleokarst geomorphology of the Middle Permian Maokou Formation in northwestern Sichuan Basin,SW China显示文摘Based on analysis of outcrop,drilling,logging and seismic data,and geotectonic background,the lithofacies paleogeography and paleokarst geomorphology of the Middle Permian Maokou Formation in the northwestern Sichuan Basin were reconstructed,and the petroleum geological significance of the lithofacies paleogeography and paleokarst geomorphology were discussed.The Maokou Formation is divided into 3 long-term cycles,namely LSCl,LSC2 and LSC3,which correspond to the Member 1,Member 2 and Member 3 of the Maokou Formation,respectively.Controlled by the extensional structure caused by opening of the Mianlue Ocean in the north margin of the upper Yangtze blocks and basement faults produced by mantle plume uplifting,the area had tectonic differentiation in NWW and NE,and sedimentary basement took on episodic settlement from north to south,as a result,the sedimentary systems of Member 1 to Member 3 gradually evolved from carbonate platform to platform-slope-continental shelf.According to the residual thickness,paleokarst geomorphologic units such as karst highland,karst slope and karst depression at different stages were reconstructed.The karst geomorphological units were developed successively on the basis of sedimentary geomorphology.Sedimentary facies and paleokarst geomorphology are of great significance for oil and gas accumulation.The Maokou Formation in northwestern Sichuan has two kinds of most favorable reservoir zone combinations:high energy grain shoal and karst monadnock,platform margin slope and karst slope.Based on this understanding,the planar distribution of the two kinds of reservoir zones were predicted by overlapping the favorable reservoir facies belt with paleokarst geomorphology.The study results provide a new idea and reference for the exploration deployment of the Middle Permian Maokou Formation in the Sichuan Basin.ZHONG Yuan YANG Yueming WEN Long LUO Bing XIAO Di LI Minglong CHEN Cong ZHAO Like LU Feifan TAN Xiucheng 2021Petroleum Exploration and Development2021,48,1:1
7Activation of fly ash and its effects on cement properties 显示文摘Fan Yueming Yirt Suhong Wen Zhiyun Jingyu Zhong 1999Cement and Con- crete Research1999,29,4:1
8A highly efficient method of epoxidation of olefins with hydrogen peroxide catalyzed by changeable hexadentate 8-quinolinolato manganese(III) complexes显示文摘Sheng Zhong Yueming Tan Zaihui Fu Qingji Xie Fang Xie Xiaoping Zhou Zhengpei Ye Guosheng Peng Dulin Yin 2008Journal of Catalysis2008,,1:1
9Identification of natural products as novel ligands for the human 5-HT2c receptor显示文摘Yao Peng Simeng Zhao Yiran Wu Haijie Cao Yueming Xu Xiaoyan Liu Wenqing Shui Jianjun Cheng Suwen Zhao Ling Shen Jun Ma Ronald J. Quinn Raymond C. Stevens Guisheng Zhong Zhi-Jie Liu 2018Biophysics Reports2018,4,1:0
10Tactfully revealing the working mechanisms on a tetraarylimidazole derivative:AIE characteristic,ESIPT process and ICT effect integrating in one molecule显示文摘Recently,a novel tetraarylimidazole derivative 2-(benzo[d]thiazol-2-yl)-4-(4,5-bis(4-methoxyphenyl)-1-phenyl-1H-imidazol-2-yl)-phenol(be called MHBT herein)was architectured by our research group showing the fascinating synergy of aggregation-induced emission(AIE)characteristic,excited-state intramolecular proton transfer(ESIPT)mechanism and intramolecular charge transfer(ICT)effect.Nevertheless,a detailed and reasonable interpretation of its mechanisms both in theory is urgently needed.Consequently,to unveil the working mechanism meticulously,herein,we tactfully applied density functional theory(DFT)and time-dependent density functional theory(TD-DFT)methods to illuminate the underlying mechanisms in different solvent conditions.After optimizing the structures,the geometric parameters of hydrogen bonds(HBs),the infrared(IR)vibrational spectrum,the reduced density gradient(RDG)isosurfaces were calculated in detail,vividly explaining how the enhancement of HBs behaved as the driving force to proceed ESIPT process.Simultaneously,the frontier molecular orbitals(FMOs)combined with the potential energy curves(PECs)were conducted to interpretate the role and character of ICT and ESIPT in molecule MHBT.Further,the PECs of MHBT for dihedral angles in different organic solvents were calculated to compare the dominant torsion degree,rationalizing the AIE phenomenon from the view of the restriction of intramolecular rotation process.This work may well underpin the understanding of the interaction between different mechanisms in fluorescent dyes and thereby provide meaningful guideline for the design and construction of ideal molecules.Min Liu Shibo Zhong Bin Feng Yueming Ren Xiaohui Liu Shuaige Bai Fei Chen Shao Liu Wenbin Zeng 2023Chinese Chemical Letters2023,34,8:0
11Physical modeling and numerical simulation of electromagnetic stirring in a slab continuous casting mold显示文摘Through physical modeling and numerical simulation,the flow field in a slab continuous casting mold with electromagnetic stirring is measured under different casting parameters and stirring currents. To qualitatively evaluate the flow field in the mold,two indexes,i. e.,mold flux entrapment and velocity uniformity,are proposed.Based on these two indexes,some optimized stirring parameters under different casting conditions can be determined.LI Bin LEI Zuosheng GE Jiangmeng ZHONG Yunbo REN Zhongming ZHOU Yueming WU Cunyou JIN Xiaoli WEI Rujun 2016Baosteel Technical Research2016,10,1:0
12Molecular core–shell structure design:Facilitating delayed fluorescence in aggregates toward highly efficient solution-processed OLEDs显示文摘Light has been sought and explored by human since ancient times.As the most important form of light,fluorescence is significant to applications in bioimaging and optoelectronic devices.However,fluorescence quenching problem constitutes a serious bottleneck in materials creation.Inspired from the core–shell structure in nature,we report an effective strategy to overcome this long-standing problem by utilizing a molecular core–shell structure.With an emissive core and multifunctional shell fragments,these compounds show aggregation-induced delayed fluorescence(AIDF)properties by restricting singlet oxygen(^(1)O_(2))generation and suppressing the triplet–triplet annihilation(TTA).Protected by the functional shell,the aggregation-induced emission luminogens(AIEgens)exhibit strong emission with high photoluminescent quantum yield and exciton utilization.Furthermore,because the shell materials can form exciplex with electron-transport materials,the fully solution-processed organic light-emitting diodes(OLEDs)based on these core–shell materials show low turnon voltages,excellent device performance with current efficiency of 61.4 cd A–1 and power efficiency of 42.8 lm W–1,which is a record-breaking efficiency based on all-solution processed organic multilayer systems among the AIE-OLEDs so far.This simple visualization strategy based on molecular core–shell structure provides a promising platform for AIEgens used in the fully wet-processed optoelectronic field.Dan Liu Meng Zhang Wenwen Tian Wei Jiang Yueming Sun Zheng Zhao Ben Zhong Tang 2022Aggregate2022,3,2:0
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