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| 1 | Comparative first-principles study of elastic constants of covalent and ionic materials with LDA,GGA,and meta-GGA functionals and the prediction of mechanical hardness显示文摘Accurate prediction of single-crystal elastic constants is critical for materials design and for understanding phase transition and elastic interactions in materials.In this work,the accuracy of elastic constants calculated with three density functional approximations has been compared,including the local density approximation(LDA),the generalized gradient approximation(GGA),and the recently developed strongly constrained and appropriately normed(SCAN)meta-GGA.The results show that SCAN and PBE describe elastic constants better than LDA.The strong correlation between the mechanical hardness and the stiffness of the softest eigenmode(SSE)has been given for above three density functionals.The correlation is capable of predicting accurately the hardness of covalent,ionic,and mixed covalent-ionic crystals,and providing us a convenient indicator for the discovery of hard or superhard materials. | XING WanDong MENG FanYan NING JinLiang SUN JianWei YU Rong | 2021 | Science China(Technological Sciences)2021，64，12： | 2 |
| 2 | Formation of better catalytically active titanium species in Ti-MCM-41 by vapor-phase silylation显示文摘 | Lin Kaifeng Wang Lifeng Meng Fanyan | 2005 | Journal of Catalysis2005，235，： | 1 |
| 3 | Improvement of mechanical properties of stainless maraging steel laser weldments by post-weld ageing treatments显示文摘 | Jian An Fanyan Meng Xiaoxia Lv Haiyuan Liu Xiaoxi Gao Yuanbo Wang You Lu | 2012 | Materials and Design2012，，： | 1 |
| 4 | The Impact of The Bible on the English Language显示文摘The Bible is called a classic of Western civilization.Its doctrines and ideas have laid the foundation for Western culture and thought,but also the source of Western languages,producing important influence on the English language.The English language cultures are closely related to The Bible,and even can be said that The Bible is one of the cultural origins of the English language. | MA Shunshun MENG Fanyan | 2022 | US-China Foreign Language2022，20，3： | 0 |
| 5 | Effect of Nozzle Inclination Angle on Fuel-Air Mixing and Combustion in a Heavy Fuel Engine显示文摘Heavy-fuel engines are widely used in UAVs(Unmanned Autonomous Vehicles)because of their reliability and high-power density.In this study,a combustion model for an in-cylinder direct injection engine has been imple-mented using the AVL FIRE software.The effects of the angle of nozzle inclination on fuel evaporation,mixture distribution,and combustion in the engine cylinder have been systematically studied at 5500 r/min and consider-ing full load cruise conditions.According to the results,as the angle of nozzle inclination increases,the maximum combustion explosion pressure in the cylinderfirst increases and then it decreases.When the angle of nozzle incli-nation is less than 45°,the quality of the mixture in the cylinder and the combustion performance can be improved by increasing the angle.When the angle of nozzle inclination is greater than 45°,however,the mixture unevenness increases slightly with the angle,leading to a deterioration of the combustion performances.When the angle of nozzle inclination is between 35°and 55°,the overall combustion performance of the engine is rela-tively good.When the angle of nozzle inclination is 45°,the combustion chamber’s geometry and the cylinder’s airflow are well matched with the fuel spray,and the mixture quality is the best.Compared with 25°,the peak heat release rate increases by 20%,and the maximum combustion burst pressure increases by 5.5%. | Zhigang Wang Bin Zheng Peidong Zhao Baoli Wang Fanyan Meng Wenke Xu Jian Meng | 2024 | Fluid Dynamics & Materials Processing2024，20，2： | 0 |
| 6 | Prediction of stable high-pressure structures of tantalum nitride TaN2显示文摘Structure searches based on a combination of first-principles calculations and a particle swarm optimization technique unravel two new stable high-pressure structures(C2/m and Cmce) for Ta N2. The structural features, mechanical properties, formation enthalpies, electronic structure, and phase diagram of Ta N2 are fully investigated. Being mechanically and dynamically stable, the two phases could be made metastable experimentally at ambient conditions. | Wandong Xing Zijie Wei Rong Yu Fanyan Meng | 2019 | Journal of Materials Science & Technology2019，35，10： | 0 |
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