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Modular assembly of Co4-thiacalix[4]arene units and Keggin-type SiW12O40 for visible-light photothermal conversion

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Tungsten 2025年第1期7卷 112-119页

作者： Jia-Hui Li qing zhao Dong-Ao Mao Kun Zhou Bao-Kuan Chen Yan-Feng Bi School of Petrochemical Engineering Liaoning Petrochemical University

The construction of metal-organic coordination clusters（MCCs） using modular secondary building units is an important method for preparing functional *** this study,two new MCCs modularly assembled from Keggin-type {SiW12O40}H4TC4A=p-tert-Butylthiacalix[4]arene(SiW12) units and thiacalixarene-supported Co4-thiacalix[4]arene(Co4-TC4A polynuclear second-building units（PSBUs,H4TC4A=p-tert-Butylthiacalix[4]arene） are *** two MCCs,abbreviated as Co4-SiW12and Co8-SiW12,were structurally characterized by single-crystal X-ray *** Co4-SiW12is a supramolecular structure involving cation-anion interactions between Co4-TC4A PSBUs and ***8-SiW12features "barbell-like" shapes with two Co4-TC4A coordinatively linked to a Keggin-type SiW12unit on opposite via W-O_t-Co *** coordination of Co4-TC4A to SiW12in Co8-SiW12resulted in significantly improved photothermal conversion performances compared with Co4-SiW12and pure SiW12or ***-gap determination and photophysical analysis combined with density functional theory calculations indicated the binding mode between Co4-TC4A PSBUs and SiW12,which considerably influences the way of electron transport and the conversion ability of visible light to heat.

关键词： Modular construction Photothermal conversion Polyoxometalate Thiacalixarene

军民融合、产业协同集聚与区域创新绩效———基于交互作用与空间溢出效应的检验

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湖北科技学院学报 2025年第1期45卷 34-42页

作者：赵庆吴伟国务院国资委中国大连高级经理学院辽宁大连116086 大连交通大学机车学院辽宁大连116028

基于空间数据分析方法,分析军民融合、产业协同集聚和区域创新绩效在我国省际间分布格局,结果显示三者均存在显著的空间自相关性即空间溢出效应,并在局部地区形成了不同的集聚区域,存在高低集聚“俱乐部”现象。基于空间计量模型、实证... 详细信息

基于空间数据分析方法,分析军民融合、产业协同集聚和区域创新绩效在我国省际间分布格局,结果显示三者均存在显著的空间自相关性即空间溢出效应,并在局部地区形成了不同的集聚区域,存在高低集聚“俱乐部”现象。基于空间计量模型、实证检验军民融合、产业协同集聚对区域创新绩效的影响,得出主要结论:全国范围军民融合、产业协同集聚均对区域创新绩效具有显著的促进作用,但西部地区军民融合影响的效果最大,而东部地区则产业协同集聚影响的效果最大;同时,在全国范围内二者间具有较强的交互作用,并且在对有限的创新生产要素资源抢占作用下,二者呈现出替代效应,交互作用下对区域创新绩效产生抑制作用,东部、中部地区亦是如此,而在西部地区,二者呈现出互补效应,交互作用下对区域创新绩效产生促进作用;并对影响区域创新绩效的其他因素进行了分析。

关键词：军民融合产业协同集聚区域创新交互作用空间溢出效应

A strategic review on processing routes towards scalable fabrication of perovskite solar cells

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Journal of Energy Chemistry 2022年第1期31卷 538-560,I0014页

作者： Yingzhuang Ma qing zhao Wenzheng College of Soochow University Suzhou 215104JiangsuChina State Key Lab for Mesoscopic Physics and Frontiers Science Center for Nano-optoelectronics School of PhysicsPeking UniversityBeijing 100871China Peking University Yangtze Delta Institute of Optoelectronics Nantong 226010JiangsuChina

Perovskite solar cells have reached a power-conversion efficiency(PCE) of 25.6%,showing great potential with reliable moisture and heat *** results are achieved on small-area devices,using conventional thin-film processing technologies like spin-coating ***,such approaches may not be upscaled for large-area ***,strategies and materials need to be developed for manufacturing processing routes to realize future commercial photovoltaic *** results have been achieved on large-area perovskite solar *** this review,similarities and differences of large-area perovskite fabrication mechanisms between the various pathways are investigated,especially on the parameters affecting the nucleation and crystal growth ***,the methods for large-area transporting layers and electrodes are discussed,and some key issues from cells to *** and opportunities are proposed to pave the way of high-efficiency perovskite solar modules.

关键词： Perovskite Solar cell Large-area Commercialization Scalable fabrication

Robust Leader-Following Output Regulation of Uncertain Multi-Agent Systems With Time-Varying Delay

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IEEE/CAA Journal of Automatica Sinica 2018年第4期5卷 807-817页

作者： Ala Shariati qing zhao Automation&Control Research Group Faculty of Electrical and Computer EngineeringKhajeh Nasir Toosi University of TechnologyTehran ***Iran Department of Electrical and Computer Engineering at University of Alberta EdmontonAlberta T6R1Z6Canada

In this paper, the robust analysis and design of leader-following output regulation for multi-agent systems described by general linear models is given in presence of timevarying delay and model uncertainty. To this aim, a new regulation protocol for the closed-loop multi-agent system under a directed graph is proposed. An important specification of the proposed protocol is to guarantee the leader-following output regulation for uncertain multi-agent systems with both stable and unstable agents. Since many signals can be approximated by a combination of the stationary and ramp signals, the presented results work for adequate variety of the leaders. The analysis and design conditions are presented in terms of certain matrix inequalities. The method proposed can be used for both stationary and ramp leaders. Simulation results are presented to show the effectiveness of the proposed method.

关键词： Linear matrix inequality(LMI) multi-agent systems robust leader-following output regulation time-varying delay

Nuclear dynamics and particle production near threshold energies in heavy-ion collisions

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Nuclear Science and Techniques 2018年第3期29卷 107-137页

作者： zhao-qing Feng Institute of Modern Physics Chinese Academy of Sciences

Recent progress of the quantum molecular dynamics model for describing the dynamics of heavy-ion collisions is viewed, in particular the nuclear fragmentation, isospin physics, particle production and in-medium effect, hadron-induced nuclear reactions, hypernucleus, *** neck fragmentation in Fermi-energy heavy-ion collisions is investigated for extracting the symmetry energy at subsaturation densities. The isospin effects, in-medium properties, and the behavior of high-density symmetry energy in medium-and high-energy heavy-ion collisions are thoroughly discussed. The hypernuclide dynamics formed in heavy-ion collisions and in hadron-induced reactions is analyzed and addressed in the future experiments at the high-intensity heavy-ion accelerator facility(HIAF).

关键词： LQMD transport model Heavy-ion reactions Hadron-induced nuclear reactions Symmetry energy Strangeness production

Properties of collective flow and pion production in intermediate-energy heavy-ion collisions with a relativistic quantum molecular dynamics model

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Nuclear Science and Techniques 2024年第1期35卷 155-169页

作者： Si-Na Wei zhao-qing Feng School of Physics and Optoelectronics South China University of TechnologyGuangzhou 510640China

The relativistic mean-field approach was implemented in the Lanzhou quantum molecular dynamics transport model(***). Using the ***, the properties of collective flow and pion production were investigated systematically for nuclear reactions with various isospin asymmetries. The directed and elliptic flows of the *** are able to describe the experimental data of STAR Collaboration. The directed flow difference between free neutrons and protons was associated with the stiffness of the symmetry energy, that is, a softer symmetry energy led to a larger flow difference. For various collision energies, the ratio between the π^(-) and π^(+) yields increased with a decrease in the slope parameter of the symmetry energy. When the collision energy was 270 MeV/nucleon, the single ratio of the pion transverse momentum spectra also increased with decreasing slope parameter of the symmetry energy in both nearly symmetric and neutron-rich ***, it is difficult to constrain the stiffness of the symmetry energy with the double ratio because of the lack of threshold energy correction on the pion production.

关键词： Heavy-ion collision Collective flow Pion production Symmetry energy Relativistic mean field

Distribution and removal of antibiotic resistance genes during anaerobic sludge digestion with alkaline, thermal hydrolysis and ultrasonic pretreatments

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Frontiers of Environmental Science & Engineering 2019年第3期13卷 163-172页

作者： Mengli Wang Ruying Li qing zhao School of Environmental Science and Engineering Tianjin University Tianjin 300350 China

Sewage sludge in the wastewater treatment plants contains considerable amount of antibiotic resistance genes (ARGs). A few studies have reported that anaerobic digestion (AD) could successfully remove some ARGs from sewage sludge, but information on the fate of ARGs in sludge pretreatment-AD process is still very limited. In this study, three sludge pretreatment methods, including alkaline, thermal hydrolysis and ultrasonic pretreatments, were compared to investigate the distribution and removal of ARGs in the sludge pretreatment-AD process. Results showed that the ARGs removal efficiency of AD itself was approximately 50.77%, and if these three sludge pretreatments were applied, the total ARGs removal efficiency of the whole pretreatment-AD process could be improved up to 52.50%-75.07%. The ultrasonic pretreatment was more efficient than alkaline and thermal hydrolysis pretreatments. Although thermal hydrolysis reduced ARGs obviously, the total ARGs rebounded considerably after inoculation and were only removed slightly in the subsequent AD process. Furthermore, it was found that the total ARGs concentration significantly correlated with the amount of 16S rRNA gene during the pretreatment and AD processes, and the bacteria carrying ARGs could be mainly affiliated with Proteobacteria.

关键词： Tetracycline resistance genes Sulfonamide resistance genes 16S rRNA gene Sludge pretreatment Anaerobic sludge digestion

Antiproton production in heavy-ion collisions at subthreshold energies

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Chinese Physics C 2020年第1期44卷 99-104页

作者： zhao-qing Feng School of Physics and Optoelectronic Technology South China University of TechnologyGuangzhou 510641China

Within the framework of the Lanzhou quantum molecular dynamics model,the deep subthreshold antiproton production in heavy-ion collisions has been investigated *** elastic scattering,annihilation and charge exchange reactions associated with antiproton channels are implemented in the *** attractive antiproton potential extracted from the G-parity transformation of nucleon selfenergies reduces the threshold energies in meson-baryon and baryon-baryon collisions,and consequently enhances the antiproton yields to some *** calculated invariant spectra are consistent with the available experimental *** primordial antiproton yields increase with the mass number of the colliding ***,annihilation reactions reduce the antiproton production which becomes independent of the colliding ***-flow phenomena of antiprotons correlated with the mean field potential and annihilation mechanism is found by comparing them with the proton *** experiments at the high-intensity heavy-ion accelerator facility(HIAF) in China are discussed.

关键词： antiproton production annihilation reactions anti-flow LQMD model

Controller Parameter Tuning of Delta Robot Based on Servo Identification

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Chinese Journal of Mechanical Engineering 2015年第2期28卷 267-275页

作者： zhao qing WANG Panfeng MEI Jiangping Key Laboratory of Mechanism Theory and Equipment Design of Ministry of Education Tianjin University

High-speed pick-and-place parallel robot is a system where the inertia imposed on the motor shafts is real-time changing with the system *** quality of computer control with proper controller parameters is conducive to overcoming this problem and has a significant effect on reducing the robot＇s tracking *** taking Delta robot as an example,a method for parameter tuning of the fixed gain motion controller is *** identifying the parameters of the servo system in the frequency domain by the sinusoidal excitation,the PD＋feedforward control strategy is proposed to adapt to the varying inertia loads,allowing the controller parameters to be tuned by minimizing the mean square tracking error along a typical trajectory.A set of optimum parameters is obtained through computer simulations and the effectiveness of the proposed approach is validated by experiments on a real prototype *** the traveling plate undergoes a specific trajectory and the results show that the tracking error can be reduced by at least 50%in comparison with the conventional auto-tuning and Z-N *** proposed approach is a whole workspace optimization and can be applied to the parameter tuning of fixed gain motion controllers.

关键词： parallel robot servo system identification parameter tuning mean square error