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Science China Chemistry 2025年

作者： Xingbin Pan Xiuzheng Deng Jingshan Fan Jiangchuan Liu Changhai Liu Zhongyu Li qian liang Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology CNPC-CZU Innovation Alliance School of Petrochemical Engineering Changzhou University School of Materials Science & Engineering Changzhou University

Solar-driven CO2conversion into value-added chemical provides an attractive strategy for sustainable development. However,the enhanced CO2photoreduction performance with target product selectivity remains a major challenge. Here, we develop a novel strategy involving Cu2O nanoparticles in situ grown on the surface of ZIF-67-derived Co@C-N nanocages （CC） to create abundant active sites and appropriate heterointerfaces. A remarkable CO selectivity of 95.7%with a yield of 117.39μmol g-1h-1and an apparent quantum efficiency as high as 1.88%at 420 nm was obtained over CC-60 catalyst in pure water, which was 87.6times higher than that of pure Cu2O. Theoretical calculations and experiments indicated that Co@C-N nanocages as charge mediator not only rapidly trap photogenerated electrons to promote charge separation efficiency, but also regulate the d-band center of Cu atoms to move to the Fermi energy level, thereby optimizing the reaction kinetics to facilitate the highly selective conversion of the key intermediate *CO desorption to CO.

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Quantificational indexes for design and evaluation of copper staves for blast furnaces

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Journal of University of Science and Technology Beijing 2008年第1期15卷 10-16页

作者： liang qian Susen Cheng Hongbo Zhao School of Metallurgical and Ecological Engineering University of Science and Technology Beijing Beijing 100083 China Continuous Casting Technology Engineering Co. Ltd. MCC Group Beijing 100081 China

The quantificational and normative design is the precondition of improving the design of copper staves for blast furnaces. Based on a 3-dimensional temperature field calculation model, from the view point of heat transfer and long campaigns note with the core of forming accretion, the forming-accretion-ability （FAA） and the rib hot surface maximum temperature difference （ATmax） as quantificational indexes to direct and evaluate the design of copper staves for blast furnaces were presented. The application of the two indexes in design essentially embodies the new long campaigns in the stage of design. With the application of the two indexes, good results can be obtained. Firstly, it was suggested that the rib height of a copper stave can be reduced to 15 mm, which is a new method and theory for the reduction of copper staves. Secondly, the influence of insert on FAA and ATmax, is decided by the volume of insert. According to this, the principle of design for the hot surface geometry of copper staves was put forward that the ratio of the rib hot surface to the copper stave hot surface （abbreviated as the ratio of rib to stave） must be maintained in the range of 45% to 55%; for the present copper stave with a 35-40 mm thick rib, the ratio of rib to stave in the range of 50% to 55% can optimize the design of copper staves; for the copper stave with a smaller rib thickness, for example 15 ram, the ratio of rib to stave in the range of 45% to 50% can optimize the design of copper staves. It can be summarized that the thicker the rib thickness, the larger is the ratio of rib to stave. 2008 University of Science and Technology Beijing. All rights reserved.

关键词： blast furnace (BF) copper stave quantificational index forming-accretion-ability

HMGB1 promotes the proliferation and invasion of oral squamous cell carcinoma via activating epithelial-mesenchymal transformation

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BIOCELL 2019年第3期43卷 199-205页

作者： JIE REN qian liang Department of Stomatology The Sixth Affiliated Hospital of Sun Yat-Sen UniversityGuangzhouChina The Stomatology Hospital of Guangzhou Medical University GuangzhouChina

This study aimed to investigate the role of high mobility group box-1(HMGB1)expression in oral squamous cell carcinoma;HMGB1 promoted the proliferation and invasion of oral squamous cell carcinoma via activating epithelial-mesenchymal transformation(EMT).In this study,RNA transfection was used to silence the expression of HMGB1 in oral squamous cell carcinoma ***-8,cell clone formation and trans-well assays were used to detect the proliferation and invasion of cells before and after HMGB1 ***-PCR and Western blot were used to detect changes in EMT marker protein expression before and after ***1 was significantly higher in OSCC tissues than in adjacent tissues,and of the cell lines examined,HMGB1 was highest in SCC-9 ***,HMGB1 silencing decreased SCC-9 cell proliferation and ***-regulation of HMBG1 expression inhibited not only the proliferation but also the invasion of SCC-9 *** expression of N-cadherin,Snail,and Slug,but not E-cadherin,were promoted after silencing *** expression of HMGB1 in OSCC tissue and cell lines was higher,and HMGB1 silencing decreased SCC-9 cell proliferation and invasion,suggesting that HMGB1 has positive effects on OSCC ***-regulation of HMBG1 expression regulates EMT markers,suggesting that HMBG1 promotes OSCC cell proliferation and invasion is likely to be associated with EMT activation.

关键词： EMT HMGB1 Invasion OSCC Proliferation

Wear Resistance, Cytotoxicity and Antibacterial Properties of Polyetheretherketone Composite Modified by Carbon Fiber and Black Phosphorus

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Journal of Bionic Engineering 2022年第1期19卷 155-166页

作者： Jingdan Li qian liang Wen Qin Jing Ma School of Material Science and Engineering Taiyuan University of TechnologyTaiyuan030024China

High wear resistance,low cytotoxicity and excellent antibacterial properties are the basis for osseointegration of implant ***(PEEK)has been considered as a potential implant material due to its excellent biocompatibility,natural radiolucency and mechanical *** this work,to improve the wear resistance,cytotoxicity and antibacterial properties of PEEK,carbon fiber(CFR)and Black Phosphorus(BP)were used to synergistically modify PEEK by two methods,deposition of BP coating on CFR-PEEK and BP/CFR-PEEK coating on Ti6Al4V(TC4)through electrostatic *** CFR and BP synergistically modified PEEK,the friction coefficient of BP coating on CFR-PEEK and BP/CFR-PEEK coating were 0.14±0.01 and 0.09±0.02,*** wear volume of BP coating on CFR-PEEK(30.54±1.32)was higher than that of BP/CFR-PEEK coating(9.46±1.32),which indicated that BP/CFR-PEEK coating showed high wear *** difference in wear resistance may be caused by the fact that BP was not easily oxidized in BP/CFR-PEEK *** addition,BP coating on CFR-PEEK and BP/CFR-PEEK coating showed no obvious cytotoxicity to L929 cell and presented excellent antibacterial efficiency(up to 94.5%±2.8%and 96.0%±3.8%,respectively)against Staphylococcus aureus(***).It was concluded that BP/CFR-PEEK coating exhibited high wear resistance,low cytotoxicity and excellent antibacterial properties against ***,which might provide a foundation for osseointegration of implants.

关键词： Surface deposition Electrostatic spraying Wear resistance Cytotoxicity Antibacterial properties

A CMOS compatible process for monolithic integration of high-aspect-ratio bulk silicon microstructures

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Science China(Information Sciences) 2014年第8期57卷 180-186页

作者： qian liang YANG ZhenChuan YAN GuiZhen National Key Laboratory of Science and Technology on Micro/Nano Fabrication Institute of MicroelectronicsPeking University

We report a CMOS compatible bulk micromachining method for the integration of high-aspectratio single crystal silicon MEMS(micro electromechanical systems)devices and signal conditioning circuit on a standard silicon *** trench refilling and residual silicon removing techniques are used to acquire a proper electrical insulation between the different actuation and sensing elements situated on either fixed or movable parts of an MEMS *** demonstrate the compatibility of the process,an integrated MEMS accelerometer was *** results show that the resistance between different elements of the device is larger than1012?.The electrical properties of the transistors that experienced MEMS fabrication agree well with those without MEMS process,indicting the CMOS compatibility of the process.

关键词： monolithic integration trench isolation CMOS compatibility high-aspect-ratio bulk micromachining

Black hole images:A review

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Science China(Physics,Mechanics & Astronomy) 2023年第6期66卷 101-117页

作者： Songbai Chen Jiliang Jing Wei-liang qian Bin Wang Department of Physics Synergetic Innovation Centerfor Quantum Effects and ApplicationsHunan Normal UniversityChangsha 40081China Center for Gravitation and Cosmology College of Physical Science and TechnologyYangzhou UniversityYangzhou 225009China Escola de Engenharia de Lorena Universidade de Sao PauloSao Paulo 12602-810Brazil Faculdade de Engenharia de Guaratingueta Universidade Estadual PaulistaSao Paulo 12516-410Brazil School of Aeronautics and Astronautics Shanghai Jiao Tong UniversityShanghai 200240China

In recent years,unprecedented progress has been achieved regarding black holes’observation through the electromagnetic *** images of the supermassive black holes M87*and Sgr A*released by the Event Horizon Telescope(EHT)Collaboration provided direct visual evidence for their existence,which has stimulated further studies on various aspects of the compact celestial ***,the information stored in these images provides a new way to understand the pertinent physical processes that occurred near the black holes,to test alternative theories of gravity,and to furnish insight into fundamental *** this review,we briefiy summarize the recent developments on the *** particular,we elaborate on the features and formation mechanism of black hole shadows,the properties of black hole images illuminated by the surrounding thin accretion disk,and the corresponding polarization *** potential applications of the relevant studies are also addressed.

关键词： black hole shadow accretion disk polarization image

The matrix method for black hole quasinormal modes

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Chinese Physics C 2019年第3期43卷 117-125页

作者： Kai Lin Wei-liang qian Hubei Subsurface Multi-scale Imaging Key Lab. Institute of Geophysics and GeomaticsChina University of GeosciencesHubei 430074China Escola de Engenharia de Lorena Universidade de S?o Paulo12602-810LorenaSPBrazil Faculdade de Engenharia de Guaratinguetá Universidade Estadual Paulista12516-410GuaratinguetáSPBrazil School of Physical Science and Technology Yangzhou UniversityJiangsu 225002China

We provide a comprehensive survey of possible applications of the matrix method for black hole quasinormal modes. The proposed algorithm can generally be applied to various background metrics, and in particular, it accommodates both analytic and numerical forms of the tortoise coordinates, as well as black hole spacetimes. We give a detailed account of different types of black hole metrics, master equations, and the corresponding boundary conditions. Besides, we argue that the method can readily be applied to cases where the master equation is a system of coupled equations. By adjusting the number of interpolation points, the present method provides a desirable degree of precision, in reasonable balance with its efficiency. The method is flexible and can easily be adopted to various distinct physical scenarios.

关键词： quasinormal modes black hole spacetime matrix method quasinormal frequency

An Improved Equalization with Real Interference Prediction Scheme of the FBMC/OQAM System

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China Communications 2021年第1期18卷 120-129页

作者： Feng Yang Yue Wang lianghui Ding liang qian Department of Electronic Engineering Shanghai Jiao Tong UniversityShanghai 200240China Shenzhen Institute of Guangdong Ocean University Shenzhen 524088China

FBMC/OQAM transmission system has a better spectral efficiency than ***,its orthogonality condition is only considered in the real *** the presence of fading channels,the real orthogonality of FBMC/OQAM might be lost,which calls for new equalization *** this paper,an improved equalizer with real interference prediction(ERIP)scheme of FBMC/OQAM is *** analyze the correlation between the real and the neighboring imaginary interference components taking Doppler shifts into account,and derive the improved ERIP *** simulation results show that the proposed scheme can outperform the original ERIP and the one-tap equalization in time-varying multipath scenarios with an affordable complexity.

关键词： equalization ERIP FBMC/OQAM interference cancellation time-varying multipath

Neutral regular black hole solution in generalized Rastall gravity

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Chinese Physics C 2019年第8期43卷 81-85页

作者： Kai Lin Wei-liang qian Hubei Subsurface Multi-scale Imaging Key Laboratory Institute of Geophysics and GeomaticsChina University of GeosciencesWuhan 430074HubeiChina Escola de Engenharia de Lorena Universidade de S?o Paulo12602-810LorenaSPBrazil Faculdade de Engenharia de Guaratingueta Universidade Estadual Paulista12516-410GuaratinguetaSPBrazil Center for Gravitation and Cosmology College of Physical Science and TechnologyYangzhou UniversityYangzhou 225009China

We investigate the static, spherically symmetric regular black hole solutions in the generalized Rastall gravity. In particular, the prescription of Rastall gravity implies that the present approach does not necessarily involve nonlinear electrodynamics. Subsequently, the resulting regular black hole solutions can be electrically and magnetically neutral. The general properties of the regular black hole solutions are explored. Moreover, specific solutions are derived and discussed, particularly regarding the parameter related to the degree of violation of the energy-momentum conservation in the Rastall theory.

关键词： regular black hole generalized Rastall gravity static spherically symmetrical spacetime

Adaptive fractional window increment of TCP in multihop ad hoc networks

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Journal of Zhejiang University-Science A(Applied Physics & Engineering) 2009年第6期10卷 820-827页

作者： liang-hui DING Wen-jun ZHANG Xin-bing WANG liang qian You-yun XU Department of Electronic Engineering Shanghai Jiao Tong University Shanghai 200240 China

We propose an adaptive fractional window increasing algorithm (AFW) to improve the performance of the fractional window increment (FeW) in (Nahm et al., 2005). AFW fully utilizes the bandwidth when the network is idle, and limits the op-erating window when the network is congested. We evaluate AFW and compare the total throughput of AFW with that of FeW in different scenarios over chain, grid, random topologies and with hybrid traffics. Extensive simulation through ns2 shows that AFW obtains 5% higher throughput than FeW, whose throughput is significantly higher than that of TCP-Newreno, with limited modi-fications.

关键词： TCP Multihop Adaptive fractional window increasing algorithm (AFW)