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Effects of SO2 on the low temperature selective catalytic reduction of NO by NH3 over CeO2-V2O5-WO3/TiO2 catalysts

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Frontiers of Environmental Science & Engineering 2017年第4期11卷 153-159页

作者： Quanming liang Jian Li Hong He Wenjun liang Tiejun Zhang Xing fan Key Laboratory of Beijing on Regional Air Pollution Control Beijing University of Technology Beijing 100124 China Beijing Key Laboratory for Green Catalysis and Separation Beijing University of Technology Beijing 100124 China

The CeO2-V2O5-WO3/TiO2 （CeO2-VWT） catalysts were prepared by one-step and two-step impregnation methods. The effects of different loading of CeO2 and different preparation methods on De-NOx activity of catalysts had been investigated. CeO2 helped to improve the De-NOx activity and sulfur resistance. The optimal loading of CeO2 was 3% with the De-NOx efficiency reached 89.9% at 140℃. The results showed that the De-NOx activity of 3% CeO2-VWT catalysts by one-step method was the same as two-step method basically and reached the level of industrial applications, the N2 selectivity of catalysts was more than 99.2% between 110℃ and 320℃. In addition, CeO2 promoted the oxidation of NO to NO2, which adsorbed on the Lewis acid site （V5＋-O） to form V5＋-NO3 and inspired the fast SCR reaction. Not only the thermal stability but also the De-NOx activity of catalysts decreased with excess CeO2 competed with V2O5. Characterizations of catalysts were carried out by XRF, BET, XRD, TG and FT-IR. BET showed that the specific surface area of catalysts decreased with the loading of CeO2 increased, the active components content and specific surface area of catalysts decreased slightly after entering SO2. Ammonium sulfate species were formed in poisoned catalyst which had been investigated by XRF, BET, TG and FT-IR. The largest loss rate of weight fraction was 0.024%.℃-1 at 380℃ 390℃, which was in accordance with the decomposition temperature of NH4HSO4 and （NH4）2SO4,

关键词： Low temperature SCR De-NOx activity Sulfur resistance Ammonium sulfate

Detached-eddy simulation of turbulent coherent structures around groynes in a trapezoidal open channel

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Journal of Hydrodynamics 2020年第2期32卷 326-336页

作者： Jing-xin Zhang Jian Wang Xiang fan Dongfang liang Key Laboratory of Hydrodynamics(Ministry of Education) shanghai Jiao Tong UniversityShanghai200240China School of Naval Architecture Ocean and Civil EngineeringShanghai Jiao Tong UniversityShanghai200240China

The hydrodynamics in a straight open channel with a multiple-embayment groyne field was investigated using the detached-eddy simulation(DES).A series of short groynes were included on a 1:3 side slope of the *** work focuses on the turbulent coherent structures around groynes on an uneven *** around groyne fields are characterized by massive separation and highly unsteady *** can capture a wide spectrum of eddies at a lower computational cost than the large eddy simulation(LES)or direct numerical simulation(DNS).In the present work,a zonal DES model(ZDES)was used to simulate the flow around *** ZDES model is a modified version of the DES designed to overcome the model-stress depletion(MSD)of the RANS/LES hybrid *** vortex system consists of the horseshoe vortex(HV)formed at the base of the obstructions,the necklace vortex(NV)that wrapped the groyne tips near the free surface,and the shedding vortex(SV)underneath the free *** effects of the incident flow and local topography on the vortex evolution were investigated by analyzing the mean flow structures and the instantaneous turbulent flow *** important vortices cannot be captured because of the averaging process,while some flow structures cannot be observed in the instantaneous *** mean flow is only a reflection of the averaging process when complex vortices are present.

关键词： Open channel flow groyne free surface detached eddy simulation turbulent coherent structure

Superconducting quantum computing: a review

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Science China(Information Sciences) 2020年第8期63卷 59-90页

作者： He-liang HUANG Dachao WU Daojin fan Xiaobo ZHU Hefei National Laboratory for Physical Sciences at Microscale and Department of Modern Physics University of Science and Technology of China Shanghai Branch CAS Centre for Excellence and Synergetic Innovation Centre in Quantum Information and Quantum PhysicsUniversity of Science and Technology of China

Over the last two decades, tremendous advances have been made for constructing large-scale quantum computers. In particular, quantum computing platforms based on superconducting qubits have become the leading candidate for scalable quantum processor architecture, and the milestone of demonstrating quantum supremacy has been first achieved using 53 superconducting qubits in 2019. In this study, we provide a brief review on the experimental efforts towards the large-scale superconducting quantum computer,including qubit design, quantum control, readout techniques, and the implementations of error correction and quantum algorithms. Besides the state of the art, we finally discuss future perspectives, and which we hope will motivate further research.

关键词： quantum computing superconducting quantum computing quantum bit quantum algorithm qubit design qubit control qubit readout

Commonly used animal models of non-alcoholic steatohepatitis

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Hepatobiliary & Pancreatic Diseases International 2009年第3期8卷 233-240页

作者： fan, Jian-Gao Qiao, liang Univ Hong Kong Queen Mary Hosp Div Gastroenterol & Hepatol Dept Med Hong Kong Hong Kong Peoples R China Shanghai Jiao Tong Univ Xinhua Hosp Dept Gastroenterol Sch Med Shanghai 200092 Peoples R China

BACKGROUND: Animal models are an essential tool in non-alcoholic steatohepatitis (NASH) studies. Ideally, such models should reflect the etiology, disease progression, and the established pathology of human NASH. To date, no single animal model displays the range of histopathologic and pathophysiologic features associated with human NASH. The currently available models do not or only partially reflect the real picture of human NASH. In particular, insulin resistance and fibrosing steatohepatitis are rarely reproduced by the currently available models. Consequently, it is necessary to establish NASH models that can best mimic the real etiology, disease progression, and pathogenesis of human NASH. DATA SOURCES: We reviewed the major currently available animal models published in the literature (PubMed) and briefly commented on the pros and cons of these models. RESULT: Three major categories of animal models, genetic, dietary, and combination models, were reviewed and discussed. CONCLUSIONS: Animal models are not only useful in revealing the etiology of NASH, but also are important platforms for the assessment of therapeutic strategies. Currently available models do not reflect the full picture of NASH in patients. Better animal models are needed for a full understanding of human NASH and the development of efficient therapies for this condition. (Hepatobiliary Pancreat Dis Int 2009; 8:233-240)

关键词： non-alcoholic fatty liver disease non-alcoholic steatohepatitis animal models

Improved time-optimal B-spline feedrate scheduling for NURBS tool paths in CNC machining

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Advances in Manufacturing 2023年第1期11卷 111-129页

作者： Yang Li Fu-Sheng liang Lei Lu Cheng fan School of Mechanic Engineering Northeast Electric Power UniversityJilin132012JilinPeople’s Republic of China Jiangsu Provincial Key Laboratory of Advanced Robotics and Collaborative Innovation Center of Suzhou Nano Science and Technology College of Mechanical and Electrical EngineeringSoochow UniversitySuzhou215021JiangsuPeople’s Republic of China

Feedrate scheduling in computer numerical control(CNC)machining is of great importance to fully develop the capabilities of machine tools while maintaining the motion stability of each *** and time-optimal feedrate scheduling plays a critical role in improving the machining efficiency and precision of complex surfaces considering the irregular curvature characteristics of tool paths and the limited drive capacities of machine *** study develops a general feedrate scheduling method for non-uniform rational B-splines(NURBS)tool paths in CNC machining aiming at minimizing the total machining time without sacrificing the smoothness of feed *** feedrate profile is represented by a B-spline curve to flexibly adapt to the frequent acceleration and deceleration requirements of machining along complex tool *** time-optimal B-spline feedrate is produced by continuously increasing the control points sequentially from zero positions in the bidirectional scanning and sampling *** required number of knots for the time-optimal B-spline feedrate can be determined using a progressive knot insertion *** improve the computational efficiency,the B-spline feedrate profile is divided into a series of independent segments and the computation in each segment can be performed *** proposed feedrate scheduling method is capable of dealing with not only the geometry constraints but also high-order drive constraints for any complex tool path with little computational *** and machining experiments are conducted to verify the effectiveness and superiorities of the proposed method.

关键词： B-spline feedrate Non-uniform rational B-splines(NURBS)tool path Knot insertion Bidirectional scanning Computer numerical control(CNC)machining

Novel STING-targeted PET radiotracer for alert and therapeutic evaluation of acute lung injury

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Acta Pharmaceutica Sinica B 2023年第5期13卷 2124-2137页

作者： Duo Xu fan Yang Jiayao Chen Tianxing Zhu fen Wang Yitai Xiao Zibin liang Lei Bi Guolong Huang Zebo Jiang Hong Shan Dan Li Center for Interventional Medicine the Fifth Affiliated HospitalSun Yat-sen UniversityZhuhai 519000China Department of Nuclear Medicine the Fifth Affiliated HospitalSun Yat-sen UniversityZhuhai 519000China Guangdong Provincial Key Laboratory of Biomedical Imaging and Guangdong Provincial Engineering Research Center of Molecular Imaging the Fifth Affiliated HospitalSun Yat-sen UniversityZhuhai 519000China Department of Pathology the First Affiliated HospitalSun Yat-sen UniversityGuangzhou 510080China

Acute lung injury(ALI),as a common clinical emergency,is pulmonary edema and diffuse lung infiltration caused by *** lack of non-invasive alert strategy,resulting in failure to carry out preventive treatment,means high mortality and poor *** of interferon genes(STING)is a key molecular biomarker of innate immunity in response to inflammation,but there is still a lack of STING-targeted *** this study,a novel STING-targeted PET tracer,[~(18)F]FBTA,was labeled with high radiochemical yield(79.7±4.3%)and molar activity(32.5±2.9 GBq/μmol).We confirmed that[~(18)F]FBTA has a strong STING binding affinity(K_d=26.86±6.79 nmol/L)and can be used for PET imaging in ALI mice to alert early lung inflammation and to assess the efficacy of drug *** STING-targeted strategy also reveals that[~(18)F]FBTA can trace ALI before reaching the computed tomography(CT)diagnostic criteria,and demonstrates its better specificity and distribution than[~(18)F]fluorodeoxyglucose([~(18)F]FDG).

关键词： Acute lung injury(ALI) Stimulator of interferon genes(STING) PET imaging [~(18)F]FBTA

Teleportation of a Kind of Three-Mode Entangled States of Continuous Variables

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Communications in Theoretical Physics 2005年第5X期44卷 833-836页

作者： fan Hong-Yi liang Xian-Ting Department of Physics Shanghai Jiao Tong University Shanghai 200030 China Department of Material Science and Engineering University of Science and Technology of China Hefei 230026 China Department of Physics and Institute of Modern Physics Ningbo University Ningbo 315211 China

A quantum teleportation scheme to teleport a kind of tripartite entangled states of continuous variables by using a quantum channel composed of three bipartite entangled states is proposed. The joint Bell measurement is feasible because the bipartite entangled states are complete and the squeezed state has a natural representation in the entangled state basis. The calculation is greatly simplified by using the Schmidt decomposition of the entangled states.

关键词： three-mode entangled state of continuous variables teleportation squeezed state

Quantum Fluctuation in Mesoscopic Coupled LC Electric Circuits at Finite Temperature

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Communications in Theoretical Physics 2001年第3期35卷 271-274页

作者： liang Xian-Ting fan Hong-Yi Department of Material Science and Engineering University of Science and Technology of China Hefei 230026 China

We consider the quantization of two coupled LC circuits with mutual inductance at a finite temperature T. It is shown that the quantum mechanical zero-point fluctuations of currents in the two circuits both increase with upgoing T. Thermal field dynamics and Weyl-Wigner theorern are used in our calculation of ensemble average of the observables.

关键词： LC电路量子涨落介观耦合

Method for designing organization decision support system framework

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Journal of Systems Engineering and Electronics 2006年第4期17卷 764-768页

作者： fan Jiancong liang Yongquan Zeng Qingtian Dept. of Computer Science Shandong Univ. of Science and Technology Qingdao 266510P.R.China

The concept of organization decision support system （ODSS） is defined according to practical applications and novel understanding. And a framework for ODSS is designed. The framework has three components： infrastructure, decision-making process and decision execution process. Infrastructure is responsible to transfer data and information. Decision-making process is the ODSS＇s soul to support decision-making. Decision execution process is to evaluate and execute decision results derived from decision-making process. The framework presents a kind of logic architecture. An example is given to verify and analyze the framework. The analysis shows that the framework has practical values, and has also reference values for understanding ODSS and for theoretical studies.

关键词： terms-decision support system organization decision organization decision support system.