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Charge-state populations for the neon-XFEL system

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Chinese Physics B 2019年第6期28卷 155-163页

作者： ping deng Gang Jiang Institute of Atomic and Molecular Physics Sichuan UniversityChengdu 610065China Key Laboratory of High Energy Density Physics and Technology Ministry of EducationChengdu 610065China

The interaction between neon and x-ray free-electron lasers with different laser parameters is systematically studied by solving a set of coupled rate equations. As an example, the evolution of 1s^12 s^22 p^6 configuration is given under different incident photon numbers, pulse widths, and photon energies. We have also determined all of the charge-state populations as a function of three laser pulse parameters by averaging over time. The result shows that the variations of these charge-state populations demonstrate a pattern when the pulse width is shorter than 10 fs: some of the charge-states decrease rapidly,while the others rise but remain relatively constant for pulse width larger than 10 fs. The variation of the average charge with three parameters has also obtained. The average charge decreases for a pulse width shorter than 10 fs but remains basically unchanged for a pulse width longer than 10 fs.

关键词： x-ray free electron lasers neon charge-state population pulse width

Advances in the construction of diverse SuFEx linkers

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National Science Review 2023年第6期10卷 226-244页

作者： Daming Zeng Wei-ping deng Xuefeng Jiang Shanghai Frontiers Science Center of Optogenetic Techniques for Cell Metabolism School of Pharmacy East China University of Science and Technology Shanghai Key Laboratory of Green Chemistry and Chemical Process School of Chemistry and Molecular Engineering East China Normal University

Sulfur fluoride exchange(SuFEx),a new generation of click chemistry,was first presented by Sharpless,Dong and co-workers in *** to the high stability and yet efficient reactivity of the SⅥ-F bond,SuFEx has found widespread applications in organic synthesis,materials science,chemical biology and drug discovery.A diverse collection of SuFEx linkers has emerged,involving gaseous SO2F2and SOF4hubs;SOF4-derived iminosulfur oxydifluorides;O-,N-and C-attached sulfonyl fluorides and sulfonimidoyl fluorides;and novel sulfondiimidoyl *** review summarizes the progress of these SuFEx connectors,with an emphasis on analysing the advantages and disadvantages of synthetic strategies of these connectors based on the SuFEx concept,and it is expected to be beneficial to researchers to rapidly and correctly understand this field,thus inspiring further development in SuFEx chemistry.

关键词： SuFEx SuFEx linker SVI–F bond synthetic strategy

Determination of hydroxyl radical in Fenton system

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Chinese Chemical Letters 2009年第10期20卷 1235-1240页

作者： Yan Fen Fang An ping deng Ying ping Huang Alan G. MacDiarmid Research Institute for Renewable Energy China Three Gorges University Yichang 443002 China

Under visible light illumination, 2,3-diaminophenazine （DAPN） was generated from the oxidation of o-phenylenediamine （OPDA） in Fe^3＋/H2O2 solution. Hydroxyl radical （＊OH） produced in this system was determined by directly measuring the concentration of DAPN. In comparison with the traditional methods, the determination is more accurate and simple.

关键词： Determination o-Phenylenediamine *OH Fenton

A New Periodic Solution to Jacobi Elliptic Functions of MKdV Equation and BBM Equation

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Acta Mathematicae Applicatae Sinica 2012年第2期28卷 409-415页

作者： Hong-cai MA Zhi-ping ZHANG Ai-ping deng Department of Applied Mathematics College of Science Donghua University Shanghai 201620 China School of Mathematics and Information Sciences Henan University Kaifeng 475000 China

Based on the homogeneous balance method, the Jacobi elliptic expansion method and the auxiliary equation method, the first elliptic function equation is used to get a new kind of solutions of nonlinear evolution equations. New exact solutions to the Jacobi elliptic function of MKdV equations and Benjamin-Bona-Mahoney （BBM） equations are obtained with the aid of computer algebraic system Maple. The method is also valid for other （l＋l）-dimensional and higher dimensional systems.

关键词： (1+1)-dimensional MKdV equation BBM equation auxiliary equation method traveling wavesolution nonlinear

Corrosion Behavior and Mechanism of Irradiated 304 Nuclear Grade Stainless Steel in High-Temperature Water

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Acta Metallurgica Sinica(English Letters) 2021年第2期34卷 174-186页

作者： ping deng En-Hou Han Qunjia Peng Chen Sun CAS Key Laboratory of Nuclear Materials and Safety Assessment Institute of Metal ResearchChinese Academy of SciencesShenyang 110016China Nuclear Power Institute of China Chengdu 610213China Suzhou Nuclear Power Research Institute Suzhou 215004China State Power Investment Corporation Research Institute Beijing 102209China

Corrosion behavior and mechanism of irradiated 304 nuclear grade stainless steel were studied in simulated pressurized water reactor primary *** microstructure of the oxide formed on the steel irradiated to different doses over an exposure period range of 25–1500 h was analyzed and *** was found that the general and intergranular corrosion rates of the steel were increased with irradiation dose,in correspondence with an evolution of the general oxide and the oxide formed at the grain *** of the oxide evolution with the corrosion kinetics and mechanism has been discussed in detail.

关键词： Stainless steel Irradiation High-temperature corrosion Intergranular corrosion

Dynamics modeling and simulation of a saucer-shaped stratospheric aerostat with an under-slung nacelle

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Journal of Central South University 2017年第6期24卷 1288-1298页

作者： ZHAO Ming XIAO Chang ZHOU ping-fang DUAN deng-ping School of Aeronautics and Astronautics Shanghai Jiao Tong UniversityShanghai 200240China

A new concept stratospheric aerostat is investigated which consists of a saucer-shaped hull, multi-vectored thrusters, and an under-slung nacelle. The design of this aerostat involves tradeoffs between conventional airship and high altitude balloon. The sling connection simplifies structure design significantly, but brings challenges for dynamics analysis. Dynamics modeling for this aerostat is a kind of double-body problem with geometric constraint. Nonlinear dynamics model is established by considering the effects of under-slung nacelle. Oscillation behavior of this double-body system is superposed by a long-period oscillation of the hull and a short-period oscillation of the nacelle. The length of sling only influences the short-period oscillation but the mass ratio of nacelle to main body determines the stability of system. Finally, an envelope about mass ratio and maximal open loop forward thrust as well as speed is presented, where the system is stable.

关键词： saucer-shaped aerostat double-body under-slung dynamics modeling

MAXIMUM NORM ERROR ESTIMATES OF CROUZEIX-RAVIART NONCONFORMING FINITE ELEMENT APPROXIMATION OF NAVIER-STOKES PROBLEM

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Journal of Computational Mathematics 2000年第2期18卷 141-156页

作者： Qing-ping deng Xue-jun Xu Shu-min Shen Department of Mathematics University of TennessceU.S.A LSEC Institute of Computational MathematicsChinese Academy of SciencesP.O.Box 2719Beijing 100080China Department of Mathematics University of Suzhou 215006China

Presents information on a study which dealt with Crouzeix-Raviart nonconforming finite element approximation (FEA) of Navier-Stokes equation in a plane bounded domain by using velocity-pressure mixed formulation. Notations of Navier-Stokes problem and its nonconforming FEA; Description of linear nonconforming finite element spaces and their properties; Maximum-error estimates for C-R nonconforming FEA of stationary Navier-Stoke problem.

关键词： Navier-Stokes problem P1 nonconforming element maximum norm

Retinoblastoma: concerning its initiation and treatment

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International Journal of Ophthalmology(English edition) 2013年第3期6卷 397-401页

作者： Chang Luo Ying-ping deng Department of Ophthalmology West China Hospital Sichuan University

·Retinoblastoma (RB) is the most common intraocular cancer of infancy and childhood. This cancer is initiated by mutation on , the tumor suppressor gene that is responsible for the regulation of both cell cycle and gnome stability in retinal cells. Patients with a constitutional mutation on can be inherited. RB occurs approximately 1 in every 15 000-20 000 live births. The worldwide mortality for this cancer is about 5%-11%. However, this rate rises to about 40%-70% in developing countries due to a delay in diagnosis. A wide variety of options are available for the treatment, but often a combination of therapies is adopted to optimize individualized care. ·

关键词： retinoblastoma retinoblastomal gene leukocoria epidemiology medical management

Elaboration of phosphoramidite ligands enabling palladium-catalyzed diastereo-and enantioselective all carbon [4+3]cycloaddition

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Science China Chemistry 2020年第7期63卷 911-916页

作者： Xing Zheng Hao Sun Wu-Lin Yang Wei-ping deng Shanghai Key Laboratory of New Drug Design School of PharmacyEast China University of Science and TechnologyShanghai 200237China

A palladium-catalyzed diastereo-and enantioselective all carbon [4+3] cycloaddition of trimethylenemethane was developed by employing the elaborate tetrahydroquinoline-derived phosphoramidite ligand. The exclusive regioselectivity was realized by using the aromatization-driven diene indole-2,3-quinodimethanes, affording biologically important cyclohepta[b]indoles with excellent diastereo-, and enantioselectivities(up to >20:1 dr, >99% ee). Furthermore, the more challenging pyrrolidone-3,4-dienes, in the absence of aromatization force, were also compatible inthereaction, providing novel cyclohepta[c]pyrrol-1(2H)-ones with excellent regio-, diastereo-, and enantioselectivities(up to >20:1 rr, >20:1 dr, >99% ee).

关键词： asymmetric catalysis |4+3|cycloaddition electron-deficient dienes palladium