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| 1 | Research of Fast Satellite Selection Algorithm for Multi-constellation显示文摘We propose a fast satellite selection algorithm for multi-constellation, which is based on both Newton's identities for Geometric dilution of precision(GDOP)fast computation and optimal satellite geometric distribution for less cycle participation. An effective closed-form formula is proposed for GDOP approximation, avoiding conventional matrix inversion and complexity. We reduce computational cycles with auxiliary optimal satellite geometric distribution, which improves the efficiency of realtime positioning under the combined action of both. Simulation results indicate that we can save more than 44% and99% computational complexity when selecting 7 satellites from 10 and 30 visible satellites respectively. The GDOP of proposed method is very close to optimal result, better than that of Quasi-Optimal algorithm. | MENG Fanchen WANG Shan ZHU Bocheng | 2016 | Chinese Journal of Electronics2016，25，6： | 6 |
| 2 | Band manipulation for high thermoelectric performance in SnTe through heavy CdSe-alloying显示文摘Convergence of L and S valence bands through alloying with monotellurides,has successfully realized the significant zT-enhancement in SnTe thermoelectrics.CdTe,as a solvend introducing Cd-substitution at Sn site,has been demonstrated theoretically and experimentally as an effective agent to reduce the energy difference between two valence bands.However,the low solubility of~3%for CdTe in SnTe limits the possibility for further zT-enhancement in SnTe,which motivates the existing efforts on increasing solubility of CdTe or exploring Cd-based solvend with higher solubility.Inspired by the solubility as high as 14%for CdSe in SnTe at 1050 K,this work focuses on the effect of CdSe on thermoelectric properties of SnTe.The converged valence bands induced by the heavy Cd-substitution,results in a significant increase in electronic performance.Moreover,CdSe-alloying would simultaneously introduce cation and anion point defects and boundary interfaces of CdSe precipitates,which leads to a strong phonon scattering and therefore a reduced lattice thermal conductivity of~0.8 W/m-K.As a result,the synergistic effect of electronic and thermal performances results in a peak zT as high as 1.1 at 850 K,demonstrating(SnTe)1-x(CdSe)x as the promising thermoelectric materials. | Bo Gao Jing Tang Fanchen Meng Wen Li | 2019 | Journal of Materiomics2019，5，1： | 3 |
| 3 | Synergistic Catalysis of Enzymes and Biomimetic MOFs: Immobilizing Cyt c on Two-dimensional MOFs to Enhance the Performance of Peroxidase显示文摘Metal-organic frameworks(MOFs) have been widely regarded as promising carriers for enzyme immobilization owing to their advantages in improving loading and regulating interaction with enzymes. However, they are still suffering from the problems of slow mass transfer and compromising activity. In this paper, the active two-dimensional(2D) MOF of Cu-TCPP(Fe)[TCPP=tetrakis(4-carboxy-phenyl)porphyrin], which possesses the biomimetic architecture of peroxidase, was adopted to anchor cytochrome(Cyt c) for the enhancement of catalytic activity. The atomic/nanometer thickness and micrometer lateral dimension of 2D MOFs can ensure the full exposure of immobilized enzymes and a shorter diffusion distance for the reactant molecules. Besides, the active carrier can provide synergistic catalysis and activity compensation during the reaction. When tested in the decomposition reaction of H_(2)O_(2), Cyt c/Cu-TCPP(Fe) exhibited nearly twice catalytic activity and an accelerated catalytic rate compared to free Cyt c. | WANG Yitong MENG Fanchen SU Ruifa SUN Changrui HAN Qianqian ZHANG Weina ZHANG Suoying | 2022 | Chemical Research in Chinese Universities2022，38，6： | 0 |
| 4 | Incorporating metal nanoparticles in porous materials via selective heating effect using microwave显示文摘Metal nanoparticle@porous material composites have attracted increasing attention due to their excellent synergistic catalytic performance.However,it is a challenge to introduce metal nanoparticles into cavities of porous materials without agglomeration on the exterior.Despite the progress achieved,a universal approach that can integrate different kinds of metal nanoparticles and porous materials is still highly desirable.Here we report a facile and general approach to fabricating metal nanoparticle@porous materials by microwave-triggered selective heating.The microwave can pass through the non-polar solvent and act on the polar solvent in the porous materials,causing the polar solvent to be heated,vaporized,and away from the pores of porous materials.The local void produced by the escape of polar solvent facilitates non-polar solvent containing metallic precursor to be dragged into the narrow pores,followed by further reduction,resulting in the complete encapsulation of nanoparticles.A series of metal nanoparticles@porous materials,ranging from metal-organic frameworks(MOFs)to zeolites,are successfully prepared by this method and show excellent size selectivity in catalytic reactions. | Yingyu Zhou Jiacheng Liu Fuyuan Sun Junchen Ouyang Ruifa Su Fanchen Meng Yongqi Luo Cheng Xu Weina Zhang Suoying Zhang Fengwei Huo | 2024 | Nano Research2024，17，4： | 0 |
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