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Modulation of the cutoff wavelength in the spectra for solar selective absorbing coating based on high-entropy films

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International Journal of Minerals,Metallurgy and Materials 2020年第10期27卷 1371-1378页

作者： Ping Song Cong Wang Jie Ren ying Sun Yong Zhang angélique Bousquet Thierry Sauvage Eric Tomasella Center for Condensed Matter and Material Physics Beihang UniversityBeijing 100083China Key Laboratory for Microstructural Material Physics of Hebei Province School of ScienceYanshan UniversityQinhuangdao 066004China Beijing Advanced Innovation Center of Materials Genome Engineering State Key Laboratory for Advanced Metals and MaterialsUniversity of Science and Technology BeijingBeijing 100083China UniversitéClermont Auvergne Centre national de la recherche scientifique(CNRS)SIGMA ClermontInstitut de Chimie de Clermont-Ferrand(ICCF)Clermont-Ferrand F-63000France Extreme Conditions and Materials:High Temperature and Irradiation(CEMHTI-UPR 3079 CNRS Orléans F-45100France

This paper demonstrates an intrinsic modulation of the cutoff wavelength in the spectra for solar selective absorbing coating based on high-entropy ***(NiCuCrFeSi)N((NCCFS)N)films were deposited by a magnetron sputtering *** backscattering spectroscopy analysis confirms the uniform composition and good homogeneity of these high-entropy *** real and imaginary parts of the permittivity for the(NCCFS)N material are calculated on the basis of the reflectance spectral fitting results.A redshift cutoff wavelength of the reflectance spectrum with increasing nitrogen gas flow rate exists because of the different levels of dispersion when changing nitrogen *** realize significant solar absorption,the film surface was reconstituted to match its impedance with air by designing a pyramid nanostructure *** with the absorptance of the as-deposited films,the designed metasurface obtains a significant improvement in solar absorption with the absorptance increasing from 0.74 to *** metasurfaces also show low mid-infrared emissions with thermal emittance that can be as low as *** results demonstrate a new idea in the design of solar selective absorbing surface with controllable absorptance and low infrared emission for high-efficiency photo-thermal conversion.

关键词： cutoff wavelength solar selective absorption infrared emission nanostructure high-entropy film

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Spectroscopic Study of the Interaction of Bu_2SnCl_2 with EHPG

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Chinese Chemical Letters 2001年第2期12卷 165-166页

作者： Chun ying wei Pin Yang Institute of molecular Science Shanxi UniversityTaiyuan 030006

The difference UV spectra and fluorescence of Bu2SnCl2 and ethylene bis (o-hydroxyphenylglycine) (EHPG), a ligand used previously for mimicking Fe3+ binding of transferrins, was first studied in Tris-HCl buffer solution (pH7.4). Difference UV spectral studies show that the binding of Bu2SnCl2 to EPHG takes twelve hours and gives rise to 1:1 complex. The binding constant for Bu2SnCl2-EHPG complex is estimated to be 1.65 X 10(3) M-1. Fluorescence studies also show an increase in intensity of EHPG after interaction with Bu2SnCl2.

关键词： EHPG spectroscopy transferrin

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Information Flow Scheduling in Concurrent Multi-Product Development Based on DSM

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Chinese Journal of Mechanical Engineering 2017年第5期30卷 1101-1111页

作者： Qing-Chao Sun wei-Qiang Huang ying-Jie Jiang wei Sun School of Mechanical Engineering Dalian University of Technology

Multi-product collaborative development is adopted widely in manufacturing enterprise, while the present multi-project planning models don＇t take techni- cal/data interactions of multiple products into account. To decrease the influence of technical/data interactions on project progresses, the information flow scheduling models based on the extended DSM is presented. Firstly, infor- mation dependencies are divided into four types： series, parallel, coupling and similar. Secondly, different types of dependencies are expressed as DSM units, and the exten- ded DSM model is brought forward, described as a block matrix. Furthermore, the information flow scheduling methods is proposed, which involves four types of opera- tions, where partitioning and clustering algorithm are modified from DSM for ensuring progress of high-priority project, merging and converting is the specific computation of the extended DSM. Finally, the information flow scheduling of two machine tools development is analyzed with example, and different project priorities correspond to different task sequences and total coordination cost. The proposed methodology provides a detailed instruction for information flow scheduling in multi-product development, with specially concerning technical/data interactions.

关键词： Concurrent multi-product development Information flow planning Extended DSM Projectpriority

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Self-assembly Behavior of Symmetrical Linear ABCA Tetrablock Copolymer:A Self-consistent Field Theory Study

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Chinese Journal of Polymer Science 2018年第7期36卷 888-896页

作者： Dan Liu ying-ying Wang ying-Chun Sun Yuan-Yuan Han Jie Cui wei Jiang School of Physics Northeast Normal UniversityChangchun 130024China State Key Laboratory of Polymer Physics and Chemistry Changchun Institute of Applied ChemistryChinese Academy of SciencesChangchun 130022China University of Chinese Academy of Sciences Beijing 100049China

ABCA tetrablock copolymers offer new opportunities for design of materials with novel structures. Using real-space self- consistent field theory and simulation, we systematically examined the self-assembly behavior of linear ABCA tetrablock copolymers in a 2D space. The simulation was carried out under conditions of symmetrical compositions and interactions. We focus on the influence of chain length ratio of block A and interactions between block A and other blocks B and C on the self-assembly behavior of the copolymer system. The simulation results show that most of the structures self-assembled by the ABCA tetrablock copolymers are centrosymmetric, such as diblock-like lameUa phase, two kinds of lameUae with beads at interface, two kinds of hierarchical lamella phase, hexagonal honeycomb-like phase, lamella phase with mixed BC and hexagonal spheres with mixed BC. Furthermore, we find that a novel noncentrosymmetric Janus spheres can be obtained when the interaction between blocks B and C is strong, whereas a noncentrosymmetric lamella phase was obtained at weak interaction between blocks B and C. Phase diagrams for the ABCA tetrablock copolymers with different interaction strength between blocks B and C are constructed by comparing free energies of candidate ordered structures. In addition, studies on the metastable behavior of the system reveal that enthalpy plays an important role in the metastable behavior of the ABCA tetrablock copolymer system. Our work can provide useful guide for structure control of such kind of tetrablock copolymers in experiments.

关键词： Self-assembly Tetrablock copolymer Self-consistent field Simulation

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Enhanced Electron Transfer Ability via Coordination in Block Copolymer/Porphyrin/Fullerene Micelle

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Chinese Journal of Polymer Science 2017年第11期35卷 1328-1341页

作者： Ruo-lin Wang Rui Qu Yan Zhai Chen Jing ang Li ying-li An 史林启 State Key Laboratory of Medicinal Chemical Biology Key Laboratory of Functional Polymer MaterialsMinistry of Education Collaborative Innovation Center of Chemical Science and Engineering (Tianjin)Institute of Polymer Chemistry Nankai University

Inspired by structures of antenna-reaction centers in photosynthesis, the complex micelle was prepared from zinc tetra-phenyl porphyrin （ZnTPP）, fullerene derivative （PyC60） and poly（ethylene glycol）-block-poly（E-caprolactone）（PEG-b- PCL）. The core-shell structure made the hydrophobic donor-acceptor system work in aqueous. In micellar core, coordination interaction occurred between ZnTPP and PyC60 molecules which ensured the enhanced energy migration from the donor to the acceptor. The enhanced interaction between porphyrin and fullerene was confirmed by absorption, steady-state fluorescence and transient fluorescence. The generation of singlet oxygen and superoxide radical was detected by iodide method and reduction of nitro blue tetrazolium, respectively, which confirmed that electron transfer reaction in the complex micellar core occurred. Moreover, the complex micelle exhibited effective electron transfer performance in photodebromination of 2,3-dibromo-3-phenylpropionic acid. The complex micellar structure endowed the donor-acceptor system with improved stability under irradiation. This strategy could be helpful for designing new electron transfer platform and artificial photosynthetic system.

关键词： Porphyrin Fullerene Micelle Coordination Electron transfer

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Land Use Regionalization of Rural Settlements in China

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Chinese Geographical Science 2013年第4期23卷 421-434页

作者： SONG wei CHEN Baiming ZHang ying Institute of Geographic Sciences and Natural Resources Research Chinese Academy of Sciences University of Chinese Academy of Sciences

This paper compartmentalizes regional land use of rural settlements in China by employing a hierarchical clustering *** statistic data are sourced from the National Bureau of Statistics of China(NBSC) and the data of land use change from the Ministry of Land and Resources of China(MLRC).The population of rural settlement decreases from the southeast to the northwest of China and the density of rural settlement decreases from the east to the west of ***-use scale of rural settlement,the proportion of one-storey houses and the average household area decrease from the north to the south of *** ratio of area of cultivated land to rural settlement is high in the northeast and southwest of China but low in the southeast of *** land use regionalization of rural settlement can be divided into four regions,namely:the northern region of China,Qinghai-Tibet,Yunnan-Guizhou,and the middle and eastern region of *** northern region of China and the middle and eastern region of China can be further divided into nine sub-regions:Xinjiang,Northeast China,Ningxia and Inner Mongolia,North China,the south of the Changjiang(Yantze) River and Sichuan Basin,Jiangsu-Shanghai,South China,the Loess Plateau,and *** consideration of the significant regional differences,it is proposed that different policies should be implemented regarding the utilization and management of rural settlements.

关键词： rural settlement land use regionalization hierarchical analysis China

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Signature of symmetry of laterally coupled quantum dots in far-infrared spectrum

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Chinese Physics B 2012年第2期21卷 477-482页

作者： Gu Li-ying Li Yan-Fang Chu wei-Dong wei ying-Hui College of Materials Science and Engineering Taiyuan University of TechnologyTaiyuan 030024China Institute of Applied Physics and Computational Mathematics Beijing 100088China

We study the effect of structure asymmetry on the energy spectrum and the far-infrared spectrum （FIR） of a lateral coupled quantum dot. The calculated spectrum shows that the parity break of coupled quantum dot results in more coherent superpositions in the low-lying states and exhibits unique anti-crossing in the two-electron FIR spectrum modulated by a magnetic field. We also find that the Coulomb correlation effect can make the FIR spectrum of coupled quantum dot without strict parity deviate greatly from Kohn theorem, which is just contrary to the symmetric case. Our results therefore suggest that FIR spectrum may be used to determine the symmetry of coupled quantum dot and to evaluate the degree of Coulomb interaction.

关键词： structure symmetry far-infrared spectrum coupled quantum dot Coulomb interaction

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PhIO-mediated Synthesis of Ketones from Aikynes and Alkenes

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Chemical Research in Chinese Universities 2019年第1期35卷 26-32页

作者： wei ying ZHENG Xiangping XIE Xinmiao Center for Molecular Systems and Organic Devices(CMSOD) Key Laboratory for Organic Electronics and Information Displays &Jiangsu Key Laboratory for BiosensorsInstitute of Advaneed Materials(LAM) Jiangsu National Synergetie Innovation Center for Advaneed Materials(SICAM) Nanjing University of Posts & TelecommunicationsNanjing 210023P.R.China

A facile and efficient method for the preparation of methyl ketones was developed in the reaction of alkynes and alkenes with PhIO-BF3·*** reaction features mild conditions,short time and metal-free *** possible mech... 详细信息

关键词： Alkyne Alkene Ketone Hydration reaction

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Adaptive multiblock kernel principal component analysis for monitoring complex industrial processes

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Journal of Zhejiang University-Science C(Computers and Electronics) 2010年第12期11卷 948-955页

作者： ying-wei ZHang Yong-dong TENG MOE Key Lab of lntegrated Automation of Process Industry Northeastern University Shenyang 110004 China

Multiblock kernel principal component analysis (MBKPCA) has been proposed to isolate the faults and avoid the high computation cost. However, MBKPCA is not available for dynamic processes. To solve this problem, recursive MBKPCA is proposed for monitoring large scale processes. In this paper, we present a new recursive MBKPCA (RMBKPCA) algorithm, where the adaptive technique is adopted for dynamic characteristics. The proposed algorithm reduces the high computation cost, and is suitable for online model updating in the feature space. The proposed algorithm was applied to an industrial process for adaptive monitoring and found to efficiently capture the time-varying and nonlinear relationship in the process variables.

关键词： Recursive multiblock kernel principal component analysis (RMBPCA) Dynamic process Nonlinear process

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Land-use Change and Socio-economic Driving Forces of Rural Settlement in China from 1996 to 2005

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Chinese Geographical Science 2014年第5期24卷 511-524页

作者： SONG wei CHEN Baiming ZHang ying Institute of Geographic Sciences and Natural Resources Research Chinese Academy of Sciences University of Chinese Academy of Sciences

While urbanization has accelerated, the rural population in China has started decreasing in recent years. However, the expansion of rural settlement has not been sufficiently curbed. The questions of why this has happened and who has driven the land-use change(LUC) of rural settlement in China have aroused great interests among researchers. In this paper, it is suggested that population is not always a positive driving force for the LUC of rural settlement in China. Furthermore, socio-economic driving forces other than urbanization, population and industrialization are analyzed. On a national scale, the major driving forces are the per-capita rural housing area and the cultivated land area. On a regional scale, the main driving forces in the eastern China are the house-building capacity of rural households and the per-capita rural housing area; while in the central China, the main driving forces are rural housing investment, the proportion of primary industry employees in the rural working population, and the cultivated land area. For the western China, the main driving forces are rural register population and cultivated land area.

关键词： land-use change (LUC) rural settlement driving force land institution China

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