|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | A review of oxygen reduction mechanisms for metal-free carbon-based electrocatalysts显示文摘The sluggish kinetics of Oxygen Reduction Reaction(ORR)at the cathode in proton exchange membrane fuel cells or metal-air batteries requires highly effective and stable electrocatalysts to boost the reaction.The low abundance and high price of Pt-based electrocatalysts hamper the widespread application of proton exchange membrane fuel cells and metal-air batteries.As promising alternatives,metal-free carbon materials,especially upon doping heteroatoms or creating defects demonstrated excellent ORR activity,which is as efficient as or even superior to commercial platinum on carbon.Significant progress on the development of advanced carbon materials as highly stable and durable catalysts has been achieved,but the catalytic mechanisms of these materials still remain undistinguished.In present review,we summarized the up-to-date progress in the studies of carbon materials,and emphasized on the combination of experiment and theory to clarify the underlying mechanisms of these materials.At last,we proposed the perspectives on the proper strategies of elucidating the mechanisms of carbon materials as electrocatalysts towards ORR. | Ruguang Ma Gaoxin Lin Yao Zhou Qian Liu Tao Zhang Guangcun Shan Minghui Yang Jiacheng Wang | 2019 | npj Computational Materials2019，，1： | 9 |
| 2 | Off-design Characteristics of IGCC System Based on Two-stage Coal-slurry Gasification Technology显示文摘整体煤气化联合循环(integrated gasification combinedcycle,IGCC)机组在一定情况下处于非设计工况运行。为了研究IGCC系统变工况特性,采用ThermoFlex软件建立基于两段式水煤浆气化技术的200 MW级整体煤气化联合循环系统模型,主要考查燃气轮机负荷、整体空分系数Xas、大气温度、大气压力对系统性能的影响。研究结果表明,降低燃气轮机负荷或者提高大气温度系统效率均呈先升高而后降低的趋势。整体空分系数Xas增加,机组发电效率降低。大气压力对系统效率影响较小。上述条件下采用两段水煤浆气化技术,系统性能可以得到有效改善。研究结果可为采用两段式水煤浆气化技术的IGCC系统的设计、运行提供参考。 | LIU gaoxin WU Shaohua LI Zhenzhong WANG Yang | 2012 | 中国电机工程学报2012，32，14： | 2 |
| 3 | Design,Modeling and Experimentation of a Biomimetic Wall-climbing Robot for Multiple Surfaces显示文摘Wall-climbing robots can work on steep terrain and obtain environment information in three dimensions for human in real time,which can improve operation efficiency.However,traditional single-mode robots cannot ensure the stable attachment on complex wall surfaces.Inspired by the structure characteristics of flies and clingfishes,three bionic structures including the flexible spine wheel,the adhesive material and the adsorption system are proposed.Aiming at task requirements on multiple walls and based on the above three bionic structures,a wall-climbing robot with the composed mode of“grabbing+adhesion+adsorption”is presented v/a the law of mechanism configuration synthesis.Using static analysis,the safe attachment conditions for the robot on smooth and rough walls are that the adsorption force is 30 N or more.Based on Newton's Euler and Lagrange formulas,the dynamic equations of the robot on vertical walls are established to deduce that the maximum theoretical torque of the driving motor is 1.43 N·m at a uniform speed.Finally,the prototype of the wall-climbing robot is manufactured and tested on the vertical lime wall,coarse sandpaper wall and acrylic ceiling wall.Meanwhile,experiment results imply that the average maximum moving speed and the corresponding load are 7.19 cm·s-1 and 0.8 kg on the vertical lime wall,7.78 cm·s-1 and 0.6 kg on the coarse sandpaper wall,and 5.93 cm·s-1 and 0.2 kg on the acrylic ceiling wall respectively.These findings could provide practical reference for the robot’s application on walls. | Jinfu Liu Linsen Xu Jiajun Xu Tao Li Shouqi Chen Hong Xu Gaoxin Cheng Marco Ceccarelli | 2020 | Journal of Bionic Engineering2020，17，3： | 2 |
| 4 | Novel biomonitoring method for determining five classes of legacy and alternative flame retardants in human serum samples显示文摘Flame retardants(FRs)are ubiquitous in environment and biota and may pose harm to human health.In recent years,concern regarding legacy and alternative FRs has been intensified due to their widespread production and increasing contamination in environmental and human matrices.In this study,we developed and validated a novel analytical method for simultaneous determination of legacy and alternative FRs,including polychlorinated naphthalenes(PCNs),short-and middle-chain chlorinated paraffins(SCCPs and MCCPs),novel brominated flame retardants(NBFRs),and organophosphate esters(OPEs)in human serum.Serum samples were prepared by liquid-liquid extraction using ethyl acetate,and purified with Oasis®HLB cartridge and Florisil–silica gel columns.Instrumental analyses were carried out using gas chromatography-triple quadrupole mass spectrometry,highresolution gas chromatography coupled with high-resolution mass spectrometry,and gas chromatography coupled with quadrupole time-of-flight mass spectrometry,respectively.The proposed method was validated for linearity,sensitivity,precision,accuracy,and matrix effects.Method detection limits for NBFRs,OPEs,PCNs,SCCPs,and MCCPs were 4.6×10^(–4)–8.6×10^(–2),4.3×10^(–3)–1.3,1.1×10^(–5)–1.0×10^(–4),1.5,and 9.0×10–1 ng/mL,respectively.Matrix spike recoveries ranged from 73%–122%,71%–124%,75%–129%,92%–126%,and 94%–126%for NBFRs,OPEs,PCNs,SCCPs,and MCCPs,respectively.The analytical method was applied for detection of real human serum.CPs were the dominant FRs in serum,indicating CPs were widely presented in human serum and should be pay more attention for their health risk. | Xiaolin Guan Gaoxin Zhang Lingling Meng Mei Liu Liyuan Zhang Chuxuan Zhao Yingming Li Qinghua Zhang Guibin Jiang | 2023 | Journal of Environmental Sciences2023，，9： | 0 |
| 5 | Complex systems and network science:a survey显示文摘Complex systems widely exist in nature and human society.There are complex interactions between system elements in a complex system,and systems show complex features at the macro level,such as emergence,self-organization,uncertainty,and dynamics.These complex features make it difficult to understand the internal operation mechanism of complex systems.Networked modeling of complex systems is a favorable means of understanding complex systems.It not only represents complex interactions but also reflects essential attributes of complex systems.This paper summarizes the research progress of complex systems modeling and analysis from the perspective of network science,including networked modeling,vital node analysis,network invulnerability analysis,network disintegration analysis,resilience analysis,complex network link prediction,and the attacker-defender game in complex networks.In addition,this paper presents some points of view on the trend and focus of future research on network analysis of complex systems. | YANG Kewei LI Jichao LIU Maidi LEI Tianyang XU Xueming WU Hongqian CAO Jiaping QI Gaoxin | 2023 | Journal of Systems Engineering and Electronics2023，34，3： | 0 |
您所在的机构暂未开通此部分的功能，请联系管理员