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Chinese Physics B 2017年第12期26卷 68-75页

作者：王道光周春红张小鹏 national laboratory of solid State Microstructure and Department of Physics Nanjing University Nanjing 210093 China School of Physics and Electronic Engineering Jiangsu Normal University Xuzhou 221116 China Kuang Yaming Honors School Nanjing University Nanjing 210023 China

The tumor suppressor p53 mediates the cellular response to various stresses. It was experimentally shown that the concentration of p53 can show oscillations with short or long periods upon DNA damage. The underlying mechanism for this phenomenon is still not fully understood. Here, we construct a network model comprising the ATM-p53-Wip1 and p53-Mdm2 negative feedback loops and ATM autoactivation. We recapitulate the typical features of p53 oscillations including p53 birhythmicity. We show the dependence of p53 birhythmicity on various factors such as the phosphorylation status of ATM. We also perform stochastic simulation and find the noise-induced transitions between two modes of p53 oscillation, which increases the p53 variability in both the amplitude and period. These results suggest that p53 birhythmicity enhances the responsiveness of p53 network, which may facilitate its tumor suppressive function.

关键词： p53 birhythmicity oscillation

Damage and progressive failure of concrete structures using non-local peridynamic modeling

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Science china(Technological Sciences) 2011年第3期54卷 591-596页

作者： HUANG Dan1,2, ZHANG Qing1,2 & QIAO PiZhong1,3 1 State Key laboratory of Hydrology-Water Resources and Hydraulic Engineering, Hohai university, nanjing 210098, china 2 Department of Engineering Mechanics, Hohai university, nanjing 210098, china 3 Department of Civil and Environmental Engineering, Washington State university, Pullman, WA 99164-2910, USA 1. State Key laboratory of Hydrology-Water Resources and Hydraulic Engineering Hohai University Nanjing 210098 China2. Department of Engineering Mechanics Hohai University Nanjing 210098 China3. Department of Civil and Environmental Engineering Washington State University Pullman WA 99164-2910 USA

Peridynamics (PD), a recently developed theory of solid mechanics, which employs a non-local model of force interaction and makes use of integral formulation rather than the spatial partial differential equations used in the classical continuum mechanics theory, has shown effectiveness and promise in solving discontinuous problems at both macro and micro scales. In this paper, the peridynamics theory is used to analyze damage and progressive failure of concrete structures. A non-local peridynamic model for a rectangular concrete plate is developed, and a central pairwise force function is introduced to describe the interior interactions between particles within some definite distance. Damage initiation, evolution and crack propagation in the concrete model subject to in-plane uni-axial tension, in-plane uni-axial compression and out-of-plane impact load are investigated respectively. The numerical results show that discontinuities appear and grow spontaneously as part of the solution to the peridynamic equations of motion, and no special failure criteria or re-meshing techniques are required, which proves the potential of peridynamic modeling as a promising technique for analyzing the progressive failure of concrete materials and structures.

关键词： concrete damage progressive failure peridynamic model discontinuities

Triazatruxene-containing hyperbranched polymers:Microwave-assisted synthesis and optoelectronic properties

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Science china Chemistry 2010年第12期53卷 2472-2480页

作者： LAI WenYong,LIU Dong & HUANG Wei Key laboratory for Organic Electronics & Information Displays (KLOEID) Institute of Advanced Materials (IAM),nanjing university of Posts & Telecommunications,nanjing 210046,china 1. Key laboratory for Organic Electronics & Information Displays (KLOEID) Institute of Advanced Materials (IAM) Nanjing University of Posts & Telecommunications Nanjing 210046 China

Hyperbranched polymer structures represent a class of high-functionality building blocks with excellent three-dimensional topology for the construction of highly substituted conjugated *** this contribution,an efficient microwave synthesis protocol toward the synthesis of conjugated hyperbranched polymers is presented.A novel series of soluble hyperbranched polyfluorenes (PTF1-PTF3) incorporating triazatruxene moiety as the branch units with various branching degrees have thus been successfully constructed with good yields and high molecular weight via a facile "A2+B2+C3" *** structures of the hyperbranched polymers were confirmed by NMR and *** thermal,optical,and electrochemical properties of the hyperbranched polymers were also *** results showed that introduction of triazatruxene units into the hyperbranched structure endowed the polymer with good thermal stability and highly amorphous *** investigation of PTFx revealed strong blue emission in both solution and solid *** polymers with higher degree of branching and proper content of linear fluorene units exhibited better photophysical properties in terms of narrow emission spectra and relatively high quantum efficiency as well as improved thermal spectral *** triazatruxene branching unit also played a role in raising the HOMO energy levels relative to those of polyfluorenes that would help to improve the charge injection and transport *** incorporation of triazatruxene unit into hyperbranched polymers has thus explored an effective avenue for constructing optoelectronic polymers with improved functional characteristics.

关键词： hyperbranched polymers microwave synthesis triazatruxene polyfluorene blue emission

Spin Accumulation and Rashba Precession in Spin Hall Effect

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Spin Accumulation and Rashba Precession in Spin Hall Effect

Molecular hosts for triplet emitters in organic light-emitting diodes and the corresponding working principle

量子电荷和自旋输运研讨会

作者： Xing Ding Yu national laboratory of solid State microstructures, nanjing university

来源： cnki会议评论

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Science china Chemistry 2010年第8期53卷 1679-1694页

作者： MI BaoXiu1,2,GAO ZhiQiang1,LIAO ZhangJin2,HUANG Wei2 & CHEN Chin Hsin3 1Jiangsu Engineering Center for Flat-Panel Displays & solid-State Lighting School of Materials Science & Engineering,nanjing university of Posts & Telecommunications,nanjing 210046,china 2Key laboratory for Organic Electronics & Information Displays (KLOEID),Institute of Advanced Materials (IAM),nanjing university of Posts & Telecommunications,nanjing 210046,china 3Display Institute,Microelectronics and Information Systems Research Center,national Chiao Tung university Hsinchu,Hsinchu,300 china 1. Jiangsu Engineering Center for Flat-Panel Displays & solid-State Lighting School of Materials Science & Engineering Nanjing University of Posts & Telecommunications Nanjing 210046 China2. Key Laboratory for Organic Electronics & Information Displays (KLOEID) Institute of Advanced Materials (IAM) Nanjing University of Posts & Telecommunications Nanjing 210046 China3. Display Institute Microelectronics and Information Systems Research Center National Chiao Tung University Hsinchu Hsinchu 300 China

This paper summarizes the mechanism and routes for excitation of triplet emitters in dopant emission based phosphorescent organic light-emitting diodes (PhOLEDs),providing a comprehensive overview of recent progress in molecular hosts for triplet emitters in ***,based on the nature of different hosts,e.g.,hole transporting,electron transporting or bipolar materials,in which the dopant emitters can be hosted to generate phosphorescence,the respective device performances are summarized and *** are given to the relationships among the molecular structure,thermal stability,triplet energy,carrier mobility,molecular orbital energy level and their corresponding device performances.

关键词： phosphorescent organic light-emitting diodes (OLEDs) working principle electrophosphorescence hosts triplet emitter

Far-infrared Absorption Spectra and Properties of SnO2 Nanorods

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Science Foundation in china 2004年第Z1期 44-46+51页

Nanostructured materials have drawn considerable attention because they are promising candidates for nextgeneration electronic and photonic devices with low power consumption. A number of methods, such as laser ablation, template-induced growth, arc discharge, vapor transport, and molecular-beam epitaxy, have been developed to synthesize Si, Ge, MgO, SnO2, GaN, and Ga2O3 nanowires or nanorods.

关键词： FIR Far-infrared Absorption Spectra and Properties of SnO2 Nanorods SnO

An eigenfunction expansion method for the elastodynamic response of an elastic solid with mixed boundary surfaces

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Progress in Natural Science:Materials International 2008年第9期18卷 1063-1068页

作者： Liguo Tang a,b,*, Jianchun Cheng c a Department of Oceanography, Xiamen university, Xiamen 361005, china b Key laboratory of Underwater Acoustic Communication, and Marine Information Technology, Ministry of Education, Xiamen university, Xiamen 361005, china c laboratory of Modern Acoustics and Institute of Acoustics, nanjing university, nanjing 2.0093, china Department of Oceanography Xiamen University Xiamen 361005 China Key laboratory of Underwater Acoustic Communication and Marine Information Technology Ministry of Education Xiamen University Xiamen 361005 China laboratory of Modern Acoustics and Institute of Acoustics Nanjing University Nanjing 210093 China

The method of eigenfunction expansion is one of the most elegant methods for solving elastodynamic problems. The solution obtained from it is more concise than that obtained from the integral transform technique. Traditional eigenfunction expansion method is used for the elastodynamic problems with displacement and traction boundary conditions. In this paper, the method is generalized to study the elastodynamic response of an elastic solid with mixed boundary surfaces, and the exact analytical solution is derived. The dynamic response of a finite-length solid aluminum cylinder with two mixed end boundaries is numerically evaluated. The result com- puted from the analytical solution agrees very well with that obtained from finite element method (FEM).

关键词： Eigenfunction expansion Elastodynamic response Mixed boundary

A 407-NM BLUE LIGHT GENERATION IN A BULK PERIODICALLY POLED LiTaO3

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南京大学学报(自然科学) 1995年第4期 668-669页

作者： Zhu Shining Zhu Yongyuan Wang Haifeng Zhang Zhiyong Qin Yiqiang Ming Naiben (national laboratory of solid State Mictostroctures,nanjing university,and Centet for Advanced Studies in Science Technology of microstructures,2.0093,nanjing,PRC)

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关键词： LiTaO3 quasi-phase- matching second-harmonic-generation

Far-infrared Absorption Spectra and Properties of SnO_2 Nanorods

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Science Foundation in china 2004年第1期12卷 42-44,49页

作者： LiuY.K. DongY. WangG.H.(national laboratory of solid State microstructures and Department of Physics, nanjing university, nanjing 2.0093 Structural Research laboratory, university of Science and Technology of china, Hefei, A nhui 230026 and Department of Physics, Yunnan Normal university, Kunming 650092.national laboratory of solid State microstructures and Department of Physics, nanjing university, nanjing 2.0093) national laboratory of solid State microstructures and Department of Physics Nanjing University Nanjing 210093 Structural Research laboratory University of Science and Technology of China Hefei A nhui 230026 and Department of Physics Yunnan Normal national laboratory of solid State microstructures and Department of Physics Nanjing University Nanjing210093

　　Nanostructured materials have drawn considerable attention because they are promising candidates for nextgeneration electronic and photonic devices with low power consumption[1-5]. A number of methods, such as laser ablation[6], template-induced growth[7], arc discharge [8], vapor transport [9], and molecular-beam epitaxy[10] have been developed to synthesize Si, Ge, MgO,SnO2, GaN, and Ga2O3 nanowires or nanorods[11-15].……

关键词： FIR Far-infrared Absorption Spectra and Properties of SnO2 Nanorods SnO