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66篇 您的检索式:作者名="MENG Weidong"
    题名 作者 年代 出处 被引量
1Flow Characteristics Diagnosis and Optimization for Dust Collectors Inflow Duct in Thermal Power Plants显示文摘火电厂烟风道用于输送烟气、冷风等介质,其设计优化水平不但影响火电厂烟风系统阻力的大小,而且影响与烟风道直接相连的各个设备的运行状态。某600MW机组除尘器前烟道设计不合理,存在磨损严重、进入除尘器烟气分配不均等问题,文中采用标准缸£模型,利用Fluent求解器对该部分烟道的流场进行数值计算,诊断分析其存在的主要问题,提出的3个改造方案均可使烟道阻力大幅度下降、烟道磨损减轻、进入除尘器烟气分配均匀。同时,研究了缓转半径及烟气流速对该段烟道阻力和烟气分配的影响情况,计算结果表明该段烟道缓转半径宜选在0.875以上,烟气流速对该段烟道的性能基本没有影响。LIU Ming MENG Guixiang YAN Junjie CHEN Weixiong LI Weidong CHONG Daotong LIU Jiping 2013中国电机工程学报2013,33,11:22
2Deep carbon cycles constrained by a large-scale mantle Mg isotope anomaly in eastern China显示文摘Although deep carbon recycling plays an important role in the atmospheric CO_2 budget and climate changes through geological time,the precise mechanisms remain poorly understood.Since recycled sedimentary carbonate through plate subduction is the main light-δ^(26)Mg reservoir within deep-Earth,Mg isotope variation in mantle-derived melts provides a novel perspective when investigating deep carbon cycling.Here,we show that the Late Cretaceous and Cenozoic continental basalts from 13 regions covering the whole of eastern China have low δ^(26)Mg isotopic compositions,while the Early Cretaceous basalts from the same area and the island arc basalts from circum-Paciic subduction zones have mantle-like or heavy Mg isotopic characteristics.hus,a large-scale mantle low δ^(26)Mg anomaly in eastern China has been delineated,suggesting the contribution of sedimentary carbonates recycled into the upper mantle,but limited into the lower mantle.his large-scale spatial and temporal variation of Mg isotopes in the mantle places severe constraints on deep carbon recycling via oceanic subduction.Shu-Guang Li Wei Yang Shah Ke Xunan Meng Hengci Tian Lijuan Xu Yongsheng He Jian Huang Xuan-Ce Wang Qunke Xia Weidong Sun Xiaoyong Yang Zhong-Yuan Ren Haiquan Wei Yongsheng Liu Fancong Meng Jun Yan 2017National Science Review2017,4,1:23
3Experimental Study on Effects of Fuel Injection on Scramjet Combustor Performance显示文摘In order to investigate the effects of fuel injection distribution on the scramjet combustor performance, there are conducted three sets of test on a hydrocarbon fueled direct-connect scramjet test facility. The results of Test A, whose fuel injection is carried out with injectors located on the top-wall and the bottom-wall, show that the fuel injection with an appropriate close-front and centralized distribution would be of much help to optimize combustor performances. The results of Test B, whose fuel injection is performed at the optimal injection locations found in Test A, with a given equivalence ratio and different injection proportions for each injector, show that this injection mode is of little benefit to improve combustor performances. The results of Test C with a circumferential fuel injection distribution displaies the possibility of ameliorating combustor performance. By analyzing the effects of injection location parameters on combustor performances on the base of the data of Test C, it is clear that the injector location has strong coupled influences on combus- tor performances. In addition, an inner-force synthesis specific impulse is used to reduce the errors caused by the disturbance of fuel supply and working state of air heater while assessing combustor performances.Wu Xianyu Li Xiaoshan Ding Meng Liu Weidong Wang Zhenguo 2007Chinese Journal of Aeronautics2007,20,6:7
4Analysis of the influencing factors of PAEs volatilization from typical plastic products显示文摘The primary emphasis of this research was to investigate the foundations of phthalate(PAEs) pollutant source researches and then firstly confirmed the concept of the coefficient of volatile strength, namely phthalate total content in per unit mass and unit surface area of pollutant sources. Through surveying and evaluating the coefficient of volatile strength of PAEs from typical plastic products, this research carried out reasonable classification of PAEs pollutant sources into three categories and then investigated the relationship amongst the coefficient of volatile strength as well as other environmental factors and the concentration level of total PAEs in indoor air measured in environment chambers.Research obtained phthalate concentration results under different temperature, humidity,the coefficient of volatile strength and the closed time through the chamber experiment. In addition, this study further explored the correlation and ratio of influencing factors that affect the concentration level of total PAEs in environment chambers, including environmental factors, the coefficient of volatile strengths of PAEs and contents of total PAEs in plastic products. The research created an improved database system of phthalate the coefficient of volatile strengths of each type of plastic goods, and tentatively revealed that the volatile patterns of PAEs from different typical plastic goods, finally confirmed that the coefficient of volatile strengths of PAEs is a major factor that affects the indoor air total PAEs concentration, which laid a solid foundation for further establishing the volatile equation of PAEs from plastic products.Weidong Chen Chenchen Chi Chen Zhou Meng Xia Cees Ronda Xueyou Shen 2018Journal of Environmental Sciences2018,30,4:5
5Flexible Waterproof Piezoresistive Pressure Sensors with Wide Linear Working Range Based on Conductive Fabrics显示文摘Developing flexible sensors with high working performance holds intense interest for diverse applications in leveraging the Internet-of-things(IoT)infrastructures.For flexible piezoresistive sensors,traditionally most efforts are focused on tailoring the sensing materials to enhance the contact resistance variation for improving the sensitivity and working range,and it,however,remains challenging to simultaneously achieve flexible sensor with a linear working range over a high-pressure region(>100 kPa)and keep a reliable sensitivity.Herein,we devised a laserengraved silver-coated fabric as'soft'sensor electrode material to markedly advance the flexible sensor's linear working range to a level of 800 kPa with a high sensitivity of 6.4 kPa^-1 yet a fast response time of only 4 ms as well as long-time durability,which was rarely reported before.The integrated sensor successfully routed the wireless signal of pulse rate to the portable smartphone,further demonstrating its potential as a reliable electronic.Along with the rationally building the electrode instead of merely focusing on sensing materials capable of significantly improving the sensor's performance,we expect that this design concept and sensor system could potentially pave the way for developing more advanced wearable electronics in the future.Hongcheng Xu Libo Gao Yuejiao Wang Ke Cao Xinkang Hu Liang Wang Meng Mu Min Liu Haiyan Zhang Weidong Wang Yang Lu 2020Nano-Micro Letters2020,12,11:4
6Current research into the use of supercritical CO2 technology in shale gas exploitation显示文摘The use of supercritical CO2 for shale gas extraction is a promising new technology.This paper explores current research into this process,looking at analysis of the mechanism of CH4 displacement in nanoporous shale,the positive and negative effects accompanying its use for sequestration as well as organic extraction,the migration of elements and the swelling process,and the macro and micro control mechanisms involved in permeability enhancement in reservoirs.Fruitful directions for future research are also considered through comparison with hydraulic fracturing.The research findings indicate that ScCO2 fluid replacement can be used to increase gas production and seal up greenhouse gases as an effective,clean and safe method of shale gas exploitation.It is particularly effective for promoting the desorption of CH4 in shale reservoirs that have developed fine neck-wide body pores,and the subtle structural changes effected by ScCO2 fluid in sensitive minerals in reservoirs with a high brittle mineral content also have a positive effect on permeability and storage capacity.The adsorption process has been characterized as consisting of three stages:short-term shrinkage,slow swelling,and stability;an expansion equation has been proposed for CO2/CH4 that incorporates competitive adsorption,collision desorption,and impingement re-adsorption.ScCO2 fracturing has been found to be more effective than hydraulic fracturing for dense reservoirs and more effective at linking up pore-micro-fissure-fracture systems.Wang Meng Huang Kai Xie Weidong Dai Xuguang 2019International Journal of Mining Science and Technology2019,29,5:4
7DYNAMIC PORTFOLIO CHOICE UNDER THE TIME-VARYING,JUMPS,AND KNIGHT UNCERTAINTY OF ASSET RETURN PROCESS显示文摘由把一个随机的元素介绍给双 jump 散开框架测量财产回来过程的骑士无常,这份报纸造动态公事包选择的模型,它最大化终端公事包财富的期望的实用程序。通过指定无常厌恶的州的功能,导出模型的分析答案学习效果利用 max-min 方法变化时间,跳,并且动态公事包选择和他们的相互作用上的财产回来过程的耐特无常。比较分析的结果出现:在公事包的积极或否定的 intertemporal hedging 需求的变化时间的结果,它取决于投资者的系数冒险在回来移动和轻快移动之间的厌恶和关联系数;在财产回来外套还原剂投资者的 jumps 为危险财产要求,它能被 jumps 在轻快提高或变弱;由于耐特无常存在,投资者避免在危险财产上拿大位置,并且结果是改善稳定的公事包和免疫。最后,实验研究从 1997 年 1 月基于上海交换复合指数每月的回来数据的样品被做到 2009 年 12 月,它不仅测试理论分析而且证明在纸的建议方法从公事包等价物用途的方面是有用的。Chaolin HE Weidong MENG 2012Journal of Systems Science & Complexity2012,25,5:3
8Progress and development trends in the numerical modeling of solidification显示文摘The history of development and current situation of the theoretical description and numerical modeling of the solidification process are reviewed.The status and problems of the related research are discussed,with the main focus being on the solidification theories associated with microstructure formation and the concurrent macro-/microcoupling methods used to simulate solidification.Furthermore,the development trends of the theoretical description and numerical modeling of solidification are discussed.Weidong Huang Meng Wang 2014Chinese Science Bulletin2014,59,15:3
9Precision in Liver Surgery显示文摘Jiahong Dong ShiZhong Yang Jianping Zeng Shouwang Cai Wenbin Ji Weidong Duan Aiqun Zhang Weizheng Ren Yinzhe Xu Jingwang Tan Xiangyang Bu Ning Zhang Xuedong Wang Xianqiang Wang Xiangfei Meng Kai Jiang Wanqing Gu Zhiqiang Huang 2013Semin Liver Dis2013,,03:2
10Effects of greenness on preterm birth: A national longitudinal study of 3.7 million singleton births显示文摘Exposure to greenness may lead to a wide range of beneficial health outcomes.However,the effects of greenness on preterm birth(PTB)are inconsistent,and limited studies have focused on the subcategories of PTB.A total of 3,751,672 singleton births from a national birth cohort in China's Mainland were included in this study.Greenness was estimated using the satellitebased Normalized Difference Vegetation Index(NDVI)and Enhanced Vegetation Index with 500-m and 1,000-m buffers around participants’addresses.The subcategories of PTB(20-36 weeks)included extremely PTB(EPTB,20-27 weeks).Lina Zhang Shuyan Shi Shenpeng Wu Ying Yang Jihong Xu Ya Zhang Qiaomei Wang Haiping Shen Yiping Zhang Donghai Yan Zuoqi Peng Cong Liu Weidong Wang Yixuan Jiang Su Shi Renjie Chen Haidong Kan Yuan He Xia Meng Xu Ma 2022The Innovation2022,3,3:2
11Controlling plasmon‐exciton interactions through photothermal reshaping显示文摘We investigated the plasmon-exciton interactions in an individual gold nanorod(GNR)with monolayer MoS2 at room temperature with the single-particle spectroscopy technique.To control the plasmon-exciton interaction,we tuned the local surface plasmon resonance of an individual GNR in-situ by employing the photothermal reshaping effect.The scattering spectra of the GNR-MoS2 hybrids exhibited two dips at the frequencies of the A and B excitons of monolayer MoS2,which were caused by the plasmon-induced resonance energy transfer effect.The resonance energy transfer rate increased when the surface plasmon resonance of the nanorod matched well with the exciton transition energy.Also,we demonstrated that the plasmon-enhanced fluorescence process dominated the photoluminescence of the GNR-MoS2 hybrid.These results provide a flexible way to control the plasmon-exciton interaction in an all-solid-state operating system at room temperature.Aiqin Hu Shuai Liu Jingyi Zhao Te Wen Weidong Zhang Qihuang Gong Yongqiang Meng Yu Ye Guowei Lu 2020Opto-Electronic Advances2020,3,1:2
12Phase decomposition behavior and its effects on mechanical properties of TiNbTa0.5ZrAl0.5 refractory high entropy alloy显示文摘The mechanical properties of refractory high entropy alloys(RHEAs) strongly depend on their phase structures. In this work, the phase stability of a BCC TiNbTa0.5ZrAl0.5 refractory high entropy alloy subjected to thermomechanical processing was evaluated, and the effects of phase decomposition on room/high temperature mechanical properties were quantitatively studied. It was found that, the thermomechanical processing at 800℃and 1200℃ leads to phase decomposition in the TiNbTa0.5ZrAl0.5 alloy. The phase decomposition is caused by the rapid rising of free energy of the primary BCC phase. The effect of the precipitates on room temperature strength is determined by the competition between the increasing in precipitation strengthening and the decreasing in solid solution strengthening. But at high temperatures(800-1200℃), the phase decomposition causes significant reduction in strength, mainly due to the grain boundary sliding and the decreasing in solid solution strengthening.Yuankui Cao Weidong Zhang Bin Liu Yong Liu Meng Du Ao Fu 2021Journal of Materials Science & Technology2021,,7:2
13Synthesis and anticancer effect of chrysin derivatives显示文摘ZHENG Xing MENG Weidong XU Yangyan 2003Bioorg MedChemLett2003,13,5:1
14显示文摘Yu Minghua Gu Guoman Meng Weidong 2007Applied Surface Science2007,253,7:1
15Synthesis of fluorinated hyperbranched polymers capable as highly hydrophobic and oleophobic coating materials 显示文摘Tang Weiyi Huang Yangen Meng Weidong 2010European Polymer Journal2010,46,:1
16Synthesis and repellent properties of vinylidene fluoride- containing polyacrylates 显示文摘HUANG Jiqing MENG Weidong QING Fengling 2007Journal of Fluorine Chemistry2007,128,2:1
17Synthesis and anticancer effect f chrysin derivatives显示文摘Xing Zheng Weidong Meng Yangyan Xu 2003Bioorg Med Chem Lett2003,13,:1
18Synthesis and anticancer effect of B-ring trifluoromethylated flavonoids显示文摘Xing Zheng Jianguo Cao Weidong Meng 2003Bioorg Med Chem Lett2003,13,:1
19Synthesisand surface antimicrobial activity of a novel perfluorooctylated quater-nary ammonium silane coupling agent 显示文摘SHAO HUI MENG WEIDONG QING FENGLING 2004Journal of FluorineChemistry2004,125,:1
20Synthesis and antimicrobial activity of a perfluoroalkyl-containing quaternary ammonium salt显示文摘Shao Hui Jiang Li Meng Weidong 2003Journal of Fluorine Chemistry2003,,:1
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