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| 1 | Factors Influencing FDI Location Choice in China's Inland Areas显示文摘自从 1978,外国直接投资(FDI ) 的体积在中国去了东南的沿海的区域,与仅仅小部分收到的内陆。与在 2000 的西方的发展策略和华中的发射升起在 2004 的策略,投资地点的选择膨胀了到内陆区域。基于从 1999 ~ 2005 盖住 98 个内陆城市的面板数据,这研究为投资在的 FDI 识别地点偏爱变量中国是内陆区域,并且发现象自然资源那样的生长得很好的因素和低劳动费用不是在在中国的内陆以内决定 FDI 地点的重要因素。相反,政策刺激和工业凝块是最重要的因素。现在的学习的调查结果为两个主人乡村当局和跨国的公司有政策含意。 | Laijun Luo Louis Brennan Chang Liu Yuze Luo | 2008 | China & World Economy2008，16，2： | 11 |
| 2 | Realizing high low-electric-field energy storage performance in AgNbO_(3) ceramics by introducing relaxor behaviour显示文摘Both sustainable development in environment and safety of high-power systems require to develop a novel lead-free dielectric capacitor with high energy density(Wrec)at low applied electric field.In this work,a remarkably high Wrec of 2.9 J/cm^(3) accompanying with energy storage efficiency of 56% was achieved in Ag_(0.9)Sr_(0.05)NbO_(3) ceramic at a low applied electric field of 190 kV/cm,by improving antiferroelectricity and introducing relaxor behaviour.The improved anti-ferroelectric stability was attributed to the decreased tolerance factor and average electronegativity difference,while the relaxor behaviour was associated with the increased disordered local structure by Sr-doping.Moreover,the Ag_(0.9)Sr_(0.05)NbO_(3) ceramics also exhibited outstanding temperature stability in energy density with small variation less than 5% over 20-140℃.The results indicate that the Ag_(0.9)Sr_(0.05)NbO_(3) ceramic is a promising candidate for low-electric-field driving capacitors. | Kai Han Nengneng Luo Shuaifei Mao Fangping Zhuo Xiyong Chen Laijun Liu Changzheng Hu Huanfu Zhou Xinpeng Wang Yuezhou Wei | 2019 | Journal of Materiomics2019，5，4： | 5 |
| 3 | Export,subsidy and innovation:China’s state-owned enterprises versus privately-owned enterprises显示文摘In this study,we advance the literature on export and government subsidy by examining their effects in the context of China,a fastgrowing emerging economy,and comparing the effects across ownership of enterprises.We examine the relationship among export,government support and firms’innovation capability,and how these relationships differ between state-owned and private owned enterprises,by using a large data sample of Chinese firms(2003–2007).First,we find that there exists an inverted U-shaped relationship between export and innovation in state-owned enterprises,but not in private owned enterprises.Second,there is a positive effect of government subsidy on firms’innovation capability.Finally,from the sub-sample analyses,we identify differences in the impact of government support between SOEs and POEs.This study will inspire future research into these issues in the disciplines of marketing,management and international business. | Laijun Luo Yang Yang Yuze Luo Chang Liu | 2016 | Economic and Political Studies2016，4，2： | 4 |
| 4 | A low-firing melilite ceramic Ba2CuGe207 and compositional modulation on microwave dielectric properties through Mg substitution显示文摘A melilite Ba2CuGe2O7 ceramic was characterized by low sintering temperature and moderate microwave dielectric properties.Sintered at 960℃,the Ba2CuGe2O7 ceramic had a high relative density 97%,a low relative permittivity(εr)9.43,a quality factor(Q×f)of 20,000 GHz,and a temperature coefficient of resonance frequency(τf)-76 ppm/℃.To get a deep understanding of the relationship between composition,structure,and dielectric performances,magnesium substitution for copper in Ba2CuGe2O7 was conducted.Influences of magnesium doping on the sintering behavior,crystal structure,and microwave dielectric properties were studied.Mg doping in Ba2CuGe2O7 caused negligible changes in the macroscopic crystal structure,grain morphology,and size distribution,while induced visible variation in the local structure as revealed by Raman analysis.Microwave dielectric properties exhibit a remarkable dependence on composition.On increasing the magnesium content,the relative permittivity featured a continuous decrease,while both the quality factor and the temperature coefficient of resonance frequency increased monotonously.Such variations in dielectric performances were clarified in terms of the polarizability,packing fraction,and band valence theory. | Changzhi YIN Zezong YU Longlong SHU Laijun LIU Yan CHEN Chunchun LI | 2021 | Journal of Advanced Ceramics2021，10，1： | 3 |
| 5 | Large electrostrain in Bi_(1/2)Na_(1/2)TiO_(3)-based relaxor ferroelectrics:A case study of Bi_(1/2)Na_(1/2)TiO3-Bi_(1/2)K_(1/2)TiO_(3)-Bi(Ni_(2/3)Nb_(1/3))O_(3) ceramics显示文摘(1-x)(0.8Bi_(1/2)Na_(1/2)TiO3-0.2Bi_(1/2)K_(1/2)TiO3)-xBi(Ni_(2/3)Nb_(1/3))O3(BNKT-xBNN)solid solution ceramics were fabricated by high temperature solid-state reaction method.All the compositions possess relaxor ferroelectric features,among which the ergodic BNKT-0.02BNN exhibits large repeatable electrostrain value Suni¼0.51%at electric field of 65 kV/cm,with high piezoelectric stain coefficient d33*of 890 pm/V at 45 kV/cm,while the non-ergodic compositions present unrepeatable large strain response.Based on the electric field-composition phase diagram,the repeatability of strain response in ergodic compositions can be attributed to the reversible electric-field-induced phase transition.In addition,the effects of BNN contents on the macroscopic strain properties are explored by analyzing the existing states of the polar regions with corresponding thermal evolutions and electric-field-induced phase transitions.This research is expected to guide the design of lead free relaxor ferroelectric materials with desired electrostrain properties. | Guangzhi Dong Huiqing Fan Laijun Liu Pengrong Ren Zhenxiang Cheng Shujun Zhang | 2021 | Journal of Materiomics2021，7，3： | 2 |
| 6 | Probing thermally-induced structural evolution during the synthesis of layered Li-, Na-, or K-containing 3d transition-metal oxides显示文摘Layered alkali-containing 3d transition-metal oxides are of the utmost importance in the use of electrode materials for advanced energy storage applications such as Li-,Na-,or K-ion batteries.A significant challenge in the field of materials chemistry is understanding the dynamics of the chemical reactions between alkali-free precursors and alkali species during the synthesis of these compounds.In this study,in situ high-resolution synchrotron-based X-ray diffraction was applied to reveal the Li/Na/K-ion insertion-induced structural transformation mechanism during high-temperature solid-state reaction.The in situ diffraction results demonstrate that the chemical reaction pathway strongly depends on the alkali-free precursor type,which is a structural matrix enabling phase transi-tions.Quantitative phase analysis identifies for the first time the decomposition of lithium sources as the most critical factor for the formation of metastable intermediates or impurities during the entire process of Li-rich layered Li[Li_(0.2)Ni_(0.2)Mn_(0.6)]O_(2) formation.Since the alkali ions have different ionic radii,Na/K ions tend to be located on prismatic sites in the defective layered structure(Na_(2/3-x)[Ni_(0.25)Mn_(0.75)]O_(2) or K_(2/3-x)[Ni_(0.25)Mn_(0.75)]O_(2))during calcination,whereas the Li ions prefer to be localized on the tetrahedral and/or octahedral sites,forming O-type structures. | Weibo Hua Xiaoxia Yang Nicola PMCasati Laijun Liu Suning Wang Volodymyr Baran Michael Knapp Helmut Ehrenberg Sylvio Indris | 2022 | eScience2022，2，2： | 2 |
| 7 | Applying empirical mode decomposition (EMD) and entropy to diagnose circuit breaker faults 显示文摘 | Liu Mingliang Wangkeqi Sun laijun | 2015 | International Journal for Light and Electron Optics2015，126，20： | 1 |
| 8 | Cryptotanshinone induces cell cycle arrest and apoptosis of multidrug resistant human chronic myeloid leukemia cells by inhibiting the activity of eukaryotic initiation factor 4E显示文摘 | Yuqing Ge Rubin Cheng Yuhong Zhou Jianping Shen Laijun Peng Xiaofeng Xu Qun Dai Pei Liu Haibing Wang Xiaoqiong Ma Jia Jia Zhe Chen | 2012 | Molecular and Cellular Biochemistry2012，，1： | 1 |
| 9 | Dielectric properties of BiAlO3-modified (Na,K,Li)NbO3 lead-free ceramics显示文摘 | SUN Xiaojun DENG Jianming LIU Laijun | 2016 | Mater Res Bull2016，73，43： | 1 |
| 10 | Comprehensive safety state assessment method of cuplok scaffolding显示文摘 | LIU LaiJun CHEN Yongrui Sun WeiGang | 2015 | Journal of Chang''an University ( Natural Science Edition)2015，35，3： | 1 |
| 11 | Fabrication of bulk Al 2 O 3 dispersed ultrafine-grained Cu matrix composite by self-propagating high-temperature synthesis casting route显示文摘 | Laijun Li Qinling Bi Jun Yang Weimin Liu Qunji Xue | 2008 | Materials Letters2008，，16： | 1 |
| 12 | Synergically enhanced piezocatalysis performance of eco-friendly(K_(0.52)Na_(0.48))NbO_(3) through ferroelectric polarization and defects显示文摘Piezocatalysis has attracted unprecedented research interest as a newly emerging catalysis technology.However,the inherent insulating property of ferroelectric materials ultimately leads to the poor vibration-electricity conversion ability.Herein,this work reports the(K_(0.52)Na_(0.48))NbO_(3) ferroelectric ceramics(KNNFCx),for which the FeCo modification strategy is proposed.The substitution of the moderate amount of FeCo(x=0.015)at Nb site not only optimizes ferroelectricity but also produces beneficial defects,notably increasing Rhodamine B water purification efficiency to 95%.The pinning effect of monovalent oxygen vacancies on ferroelectric domains is responsible for the excellent ferroelectric polarization of KNNFC0.015 through the generation of an internal field to promote charge carriers separation and reduce nonradiative recombination.Importantly,the accompanying electron carriers can easily move to the material surface and participate in redox reactions because they have low activation energy.Therefore,ferroelectric polarization and defects play synergetic roles in enhancing piezocatalytic performance. | Min Zhou Laijun Liang Dingze Lu Xiaomei Lu Zheng Wang Fengzhen Huang Pengfei Cheng Dongdong Liu Mengqi Tian Qiuping Wang Yunjie Zhang | 2023 | International Journal of Minerals,Metallurgy and Materials2023，30，10： | 1 |
| 13 | An Efficient Decomposition Method for Bilevel Energy Storage Arbitrage Problem显示文摘With the reduction of cost,large-capacity energy storage unit is playing an increasingly important role in modern power systems.When a merchant energy storage unit participates in the power market,its arbitrage problem can be modeled via a bilevel program.The lower-level problem simulates power market clearing and gives the nodal price,based on which the upperlevel problem maximizes the arbitrage profit of energy storage.To solve this bilevel problem,the conventional method replaces the lower level problem with its KKT optimality conditions and further performs linearization.However,because the size of the market clearing problem grows with the scale of the power system and the number of periods,the resulting MILP(mixed-integer linear program)is very challenging to solve.This paper proposes a decomposition method to address the bilevel energy storage arbitrage problem.First,the locational marginal price at the storage connection node is expressed as a piecewise constant function in the storage bidding strategy,so the market clearing problem can be omitted.Then,the storage bidding problem is formulated as a mixed-integer linear program,which contains only a few binary variables.Numeric experiments validate the proposed method is exact and highly efficient. | Danman Wu Tengyun Qi Wei Wei Jianping Liu Laijun Chen Shengwei Mei | 2022 | CSEE Journal of Power and Energy Systems2022，8，2： | 1 |
| 14 | Large-scale synthesis of Al–Cu–Fe submicron quasicrystals显示文摘 | Laijun Li Qinling Bi Jun Yang Licai Fu Liping Wang Shuncai Wang Weimin Liu | 2008 | Scripta Materialia2008，，6： | 1 |
| 15 | Oxygen-vacancy-related high-temperature dielectric relaxation and electrical conduction in 0.95K 0.5 Na 0.5 NbO 3 –0.05BaZrO 3 ceramic显示文摘 | Laijun Liu Yanmin Huang Yunhua Li Meixie Wu Liang Fang Changzheng Hu Yanzhong Wang | 2011 | Physica B: Physics of Condensed Matter2011，，1： | 1 |
| 16 | Dielectric Properties of Unfilled Tetragonal Tungsten Bronze Ba4PrFe(0.5)Nb(9.5)O(30) Ceramics显示文摘In order to found new dielectrics ceramics in tungsten bronze structure, unfilled tungsten bronze(TB) ceramics with nominal formula Ba_4PrFe_(0.5)Nb_(9.5)O_(30) were prepared by the solid state reaction method. The microstructure and dielectric properties were studied using powder X-ray diffraction, field emission scanning electron microscope, and variable temperature dielectric test system. The results show that the ceramics have a single phase and belong to the space group of P4bm with the cell of a = b = 12.4839(3) ?, c = 3.9409(5) ?, V = 614.192(2) ?3. The frequency dependent dielectrics properties show that the ceramics have a Debye-like relaxation at room temperature, while the temperature dependent dielectrics properties indicate that the ceramics are a relaxor and the relaxation is due to the nanopolars and oxygen vacancies. The ceramics have a potential application in electronic ceramics as temperature-stable multilayer ceramic capacitors. | 胡长征 ZHU Qihua SUN Zhen GUO Zhe LIU Laijun FANG Liang | 2017 | Journal of Wuhan University of Technology(Materials Science)2017，32，4： | 1 |
| 17 | Compositional modulation in ZnGa_(2)0_(4) via Zn^(2+)/Ge^(4+)co-doping to simultaneously lower sintering temperature and improve microwave dielectric properties显示文摘AB_(2)O_(4)-type spinels with low relative permittivity(ε_(τ))and high quality factor(Q×f)are crucial to high-speed signal propagation systems.In this work,Zn^(2+)/Ge^(4+) co-doping to substitute Ga in ZnGa_(2)O_(4) was designed to lower the sintering temperature and adjust the thermal stability of resonance frequency simultaneously.Zn_(1+2)Ga_(2-2x)Ge_(x)O_(4)(0.1≤x≤0.5)ceramics were synthesised by the conventional solid state method.Zn^(2+)/Ge^(4+) co-substitution induced minimal variation in the macroscopical spinel structure,which effectively lowered the sintering temperature from 1385 to 1250℃.All compositions crystallized in a normal spinel structure and exhibited dense microstructures and excellent microwave dielectric properties.The compositional dependent quality factor was related to the microstructural variation,being confirmed by Raman features.A composition with x=0.3 shows the best dielectric properties with ε_(τ) ≈10.09,Q×f≈112,700 THz,and ε_(τ) ≈-75.6 ppm/℃.The negative τf value was further adjusted to be near-zero through the formation of composite ceramics with TiO_(2). | Ying XIONG Hongyuan XIE Zhenggang RAO Laijun LIU Zhengfeng WANG Chunchun LI | 2021 | Journal of Advanced Ceramics2021，10，6： | 0 |
| 18 | The impact of key parameters on the cycle efficiency of multi-stage RCAES system显示文摘Due to the uncertainty and anti-peaking nature,large scale integration of renewable energy imposes great challenges to the operation and dispatch of power systems.Compressed air energy storage(CAES)system provides new ideas to solve this problem as its characteristics of fast regulating,flexible location and long-service life.Especially,regenerative compressed air energy storage(RCAES)system is widely concerned as its capability of heat recovery in the compression process.The cycle efficiency is a key indicator of RCAES system which can be significantly impacted by the key parameters of the systems including compression ratio,exhaust air pressure of throttle(EAPT)and the maximum working pressure(MWP)of compressed air storage vessel(CASV).However,current research mostly focuses on the thermodynamic process and few studies have focused on the impact of key parameters on RCAES system.Based on the efficiency evaluation method which was formulated through the electricalmechanical-thermal dynamic process and measurable parameters,the impact of key parameters on the cycle efficiency of RCAES system is analyzed in this paper and a practical RCAES design scheme is adopted for case study. | Bin LIU Laijun CHEN Shengwei MEI Feng LIU Junjie WANG Sixian WANG | 2014 | Journal of Modern Power Systems and Clean Energy2014，2，4： | 0 |
| 19 | Entropy regulation in LaNbO_(4)-based fergusonite to implement high-temperature phase transition and promising dielectric properties显示文摘High-entropy effect is a novel design strategy to optimize properties and explore novel materials.In this work,(La_(1/5)Nd_(1/5)Sm_(1/5)Ho_(1/5)Y_(1/5))NbO_(4)(5RNO)high-entropy microwave dielectric ceramics were successfully prepared in the sintering temperature(S.T.)range of 1210–1290℃via a solid-phase reaction route,and medium-entropy(La_(1/3)Nd_(1/3)Sm_(1/3))NbO_(4) and(La_(1/4)Nd_(1/4)Sm_(1/4)Ho_(1/4))NbO_(4)(3RNO and 4RNO)ceramics were compared.The effects of the entropy(S)on crystal structure,phase transition,and dielectric performance were evaluated.The entropy increase yields a significant increase in a phase transition temperature(from monoclinic fergusonite to tetragonal scheelite structure).Optimal microwave dielectric properties were achieved in the high-entropy ceramics(5RNO)at the sintering temperature of 1270℃for 4 h with a relative density of 98.2%and microwave dielectric properties of dielectric permittirity(ε_(r))=19.48,quality factor(Q×f)=47,770 GHz,and resonant frequency temperature coefficient(τ_(f))=–13.50 ppm/℃.This work opens an avenue for the exploration of novel microwave dielectric material and property optimization via entropy engineering. | Deqin Chen Na Yan Xuefeng Cao Fengrong Li Laijun Liu Qinghua Shen Huanfu Zhou Chunchun Li | 2023 | Journal of Advanced Ceramics2023，12，5： | 0 |
| 20 | B-Site Nanoscale-Ordered Structure Enables Ultra-High Tunable Performance显示文摘Tunable devices constructed by ferroelectric thin flms are often desired to possess a low dielectric loss while maintainging a high dielectric tunability over a broad operating temperature range in applications,for example,resonators,filters,or phase shifters.However,it is dificult to simultaneously achieve these characteristics by traditional strategies,such as doping and strain modifying.Here,we demonstrate that the dielectric tunability of the sol-gel-prepared Pb(Sc_(1/2)Nb_(1/2))_(0.9)(Mg_(1/3)Nb_(2/3))_(0.O3)(PSNMN)thin film can be almost doubled from~47%to~80.0%(at 10kHz)at a low electric field(~530kV/cm),and the dielectric loss can be sharply reduced by more than an order of magnitude,from~0.50 to~0.037(at 1 kHz)when the thin flm was annealed in air at 650℃ for 15h under the help of an atmosphere-compensating-block(ACB)made from the proto-PSNMN gel.Moreover,the PSNMN thin flm annealed with ACB also exhibited an extremely high thermally-stable dielectric tunability in an ultrabroad temperature range(>130 K),which could be attributed to the Maxwell-Wagner(MW)effect generated by the interface between the PSNMN disordered matrix and the B-site nanoscale-ordered structure formed during the long-term annealing process.The reduced dielectric loss is mainly benefited from the reduced concentration of oxygen vacancy and the possibie MW efects,and the enhanced dielectric tunability could be ascribed to the weaker domain-pinning effect by oxygen vacancy.The breakthrough provides a new universal strategy to achieve utrahigh tunable performance in A(B'_(1/2)B'_(1/2))O3 ferroelectric thin films with a B-site nanoscale-ordered structure,meanwhile it paves the way for ultraintergrated tunable thin-flm-devices with great phase shifter performance in practical applications. | Biaolin Peng Qiuping Lu Yi-Chi Wang Jing-Feng Li Qi Zhang Haitao Huang Laijun Liu Chao Li Limei Zheng Zhong Lin Wang | 2023 | Research2023，，1： | 0 |
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