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| 1 | Coordinated optimal dispatch and market equilibrium of integrated electric power and natural gas networks with P2G embedded显示文摘As power to gas(P2 G) technology gradually matures, the coupling between electricity networks and natural gas networks should ideally evolve synergistically.With the intent of characterizing market behaviors of integrated electric power and natural gas networks(IPGNs)with P2 G facilities, this paper establishes a steady-state model of P2 G and constructs optimal dispatch models of an electricity network and a natural gas network separately. In addition, a concept of slack energy flow(SEF) is proposed as a tool for coordinated optimal dispatch between the two networks. To study how the market pricing mechanism affects coordinated optimal dispatch in an IPGN, a market equilibrium-solving model for an IPGN is constructed according to game theory, with a solution based on the Nikaido-Isoda function. Case studies are conducted on a joint model that combines the modified IEEE 118-node electricity network and the Belgian 20-node gas network.The results show that if the game between an electric power company and a natural gas company reaches market equilibrium, not only can both companies maximize their profits, but also the coordinated operation of the coupling units, i.e., gas turbines and P2 G facilities, will contribute more to renewable energy utilization and carbon emission reduction. | Zexing CHEN Yongjun ZHANG Tianyao JI Zexiang CAI Licheng LI Zhiheng XU | 2018 | Journal of Modern Power Systems and Clean Energy2018，6，3： | 37 |
| 2 | Stochastic Dynamic Economic Dispatch of Wind-integrated Electricity and Natural Gas Systems Considering Security Risk Constraints显示文摘As the proportion of wind power generation increases in power systems,it is necessary to develop new ways for wind power accommodation and improve the existing power dispatch model.The power-to-gas technology,which offers a new approach to accommodate surplus wind power,is an excellent way to solve the former.Hence,this paper proposes to involve power-to-gas technology in the integrated electricity and natural gas systems(IEGSs).To solve the latter,on one hand,a new indicator,the scale factor of wind power integration,is introduced into the wind power stochastic model to better describe the uncertainty of grid-connected wind power;on the other hand,for quantizing and minimizing the impact of the uncertainties of wind power and system loads on system security,security risk constraints are established for the IEGS by the conditional value-at-risk method.By considering these two aspects,an MILP formulation of a security-risk based stochastic dynamic economic dispatch model for an IEGS is established,and GUROBI obtained from GAMS is used for the solution.Case studies are conducted on an IEGS consisting of a modified IEEE 39-bus system and the Belgium 20-node natural gas system to examine the effectiveness of the proposed dispatch model. | Zexing Chen Gelan Zhu Yongjun Zhang Tianyao Ji Ziwen Liu Xiaoming Lin Zexiang Cai | 2019 | CSEE Journal of Power and Energy Systems2019，5，3： | 8 |
| 3 | Phenological basis of determining tourism seasons for ornamental plants in central and eastern China显示文摘许多植物在特定的 phenophases 期间有高装饰的价值,并且与季节的植被风景高度种物候学相互关联。跨度的决心和为装饰植物的旅游季节的空间与时间的模式能自己向旅游主管和旅游者提供做旅行安排的一个理论基础。基于从三 phenophases 的 on-the-ground 观察导出的数据,首先明确地长叶叶着色日期的日期,完整的 flowering 日期,和结束,和在在中国的 12 个地点的相应气象学的数据,我们把旅游季节划分了成它的开始的日期,山峰(最好的日期)和为由计算这些 phenophases 的频率分布的装饰植物的结束日期。我们也决定了这个旅游季节的山峰怎么在过去的 50 年的功课期间变化了。我们发现了那:( 1 )旅游季节的山峰从3月16日 (在桂林)到5月5日(在哈尔滨)因为首先长叶,从4月3日(在 Kunming )到5月24日(在 Mudanjiang )为完整的 flowering ,并且从10月1日(在 Mudanjiang )到11月30日(在上海)为叶着色。当力量被期望,首先长叶和完整的 flowering 旅游季节的山峰断然与纬度被联系,当为叶着色它否定地与纬度被相关时。(2 ) 为首先长叶和完整的 flowering 的理想的旅游季节在北京和 Xian 在过去的 50 年到超过 0.16 天 / 年进展了,当为叶着色的旅游季节的山峰变得显著地推迟了时(到在北京的 0.16 天 / 年和在 Xian 的 0.21 天 / 年) 。(3 ) 旅游季节显著地越过相关 phenological 观察地点与温度被联系。首先长叶和完整的 flowering 的理想的时间决心分别地,与 pH 价值 increasi 每 1eposition 率增加到 4.02 天和 4.04 天前进了吗?? | TAO Zexing GE Quansheng WANG Huanjiong DAI Junhu | 2015 | Journal of Geographical Sciences2015，25，11： | 8 |
| 4 | Zero-knowledge proofs of retrievability显示文摘Proof of retrievability (POR) is a technique for ensuring the integrity of data in outsourced storage services.In this paper,we address the construction of POR protocol on the standard model of interactive proof systems.We propose the first interactive POR scheme to prevent the fraudulence of prover and the leakage of verified data.We also give full proofs of soundness and zero-knowledge properties by constructing a polynomial-time rewindable knowledge extractor under the computational Diffie-Hellman assumption.In particular,the verification process of this scheme requires a low,constant amount of overhead,which minimizes communication complexity. | ZHU Yan WANG HuaiXi HU ZeXing AHN Gail-Joon HU HongXin | 2011 | Science China(Information Sciences)2011，54，8： | 8 |
| 5 | Highly nitrogen and sulfur dual-doped carbon microspheres for supercapacitors显示文摘Heteroatom doping, especially dual-doped carbon materials have attracted much attention for the past few years, and have been regarded as one of the most efficient strategies to enhance the capacitance behavior of porous carbon materials. In this work, a facile two-step synthetic route was developed to fabricate nitrogen and sulfur co-doped carbon microsphere(NSCM) by using thiourea as dopant. The N/S doping content is controlled via varying the carbonization temperature. It has been proved that a suitable quantity of N and S groups could not only provide pseudo-capacitance but also promote the electron transfer for carbon materials, which ensures the further utilization of the exposed surfaces for charge storage. The optimized NSCM prepared at a carbonization temperature of 800 °C(NSCM-800) achieves a capacitance of 277.1 Fg^(-1)at a current density of 0.3 Ag^(-1)in 6.0 mol L^(-1)KOH electrolyte, which is71% higher than that of undoped carbon microsphere. Besides, NSCM-800 shows an excellent cycling stability, 98.2% of the initial capacitance is retained after 5,000 cycles at a current density of 3.0 Ag^(-1). | Wen Lei Junpo Guo Zexing Wu Cuijuan Xuan Weiping Xiao Deli Wang | 2017 | Science Bulletin2017，62，14： | 5 |
| 6 | Climate change, migration, and regional administrative reform: A case study of Xinjiang in the middle Qing Dynasty(1760–1884)显示文摘Based on historical records of extreme climate events and population densities in Gansu and Shaanxi, and information on climate change, populations, new cultivated cropland, and administrative system reform in Xinjiang, this study explores the interaction between climate change, migration, and regional administrative reform in the middle Qing Dynasty. The results showed that the surge in population migration from Gansu and Shaanxi to Xinjiang during 1760–1820 was caused by extreme climate events(droughts and floods) and population pressure in Gansu and Shaanxi. During 1760–1880, the climate in Xinjiang was unusually cold and humid, which was highly conducive to abundant regional water resources. This provided favorable conditions for farmland irrigation and further promoted agricultural cultivation, population growth, and town development within this region. Additionally,the interactions between climate change and the above-mentioned social factors, which acted as driving forces, spurred the reform in the administrative system of Xinjiang whereby the military administration system was transformed to a province administration system. Through this reform, the Qing government managed to restore peace and stability in Xinjiang. This study contributes to a better understanding of climate-related population migration and enhances our knowledge of the impact-response chain between climate change, ancient social developments, and political coping strategies, especially in regional administrative reform. | LI YanPeng GE QuanSheng WANG HuanJiong TAO ZeXing | 2017 | Science China Earth Sciences2017，60，7： | 3 |
| 7 | Modeling of microstructure evolution of AZ80 magnesium alloy during hot working process using a unified internal state variable method显示文摘In this paper, a unified internal state variable(ISV) model for predicting microstructure evolution during hot working process of AZ80 magnesium alloy was developed. A novel aspect of the proposed model is that the interactive effects of material hardening, recovery and dynamic recrystallization(DRX) on the characteristic deformation behavior were considered by incorporating the evolution laws of viscoplastic flow, dislocation activities, DRX nucleation and boundary migration in a coupled manner. The model parameters were calibrated based on the experimental data analysis and genetic algorithm(GA) based objective optimization. The predicted flow stress, DRX fraction and average grain size match well with experimental results. The proposed model was embedded in the finite element(FE) software DEFORM-3 D via user defined subroutine to simulate the hot compression and equal channel angular extrusion(ECAE) processes. The heterogeneous microstructure distributions at different deformation zones and the dislocation density evolution with competitive deformation mechanisms were captured.This study can provide a theoretical solution for the hot working problems of magnesium alloy. | Zexing Su Chaoyang Sun Mingjia Wang Lingyun Qian Xintong Li | 2022 | Journal of Magnesium and Alloys2022，10，1： | 3 |
| 8 | Time-domain Spectral Finite Element Method for Wave Propagation Analysis in Structures with Breathing Cracks显示文摘Guided waves are generally considered as a powerful approach for crack detection in structures,which are commonly investigated using the finite element method(FEM).However,the traditional FEM has many disadvantages in solving wave propagation due to the strict requirement of mesh density.To tackle this issue,this paper proposes an efficient time-domain spectral finite element method(SFEM)to analyze wave propagation in cracked structures,in which the breathing crack is modeled by definiiig the spectral gap element.Moreover,novel orthogonal polynomials and Gauss-Lobatto-Legendre quadrature rules are adopted to construct the spectral element.Meanwhile,a separable hard contact is utilized to simulate the breathing behavior.Finally,a comparison of the numerical results between the FEM and the SFEM is conducted to demonstrate the high efficiency and accuracy of the proposed method.Based on the developed SFEM,the nonlinear features of waves and influence of the incident mode are also studied in detail,which provides a helpful guide for a physical understanding of the wave propagation behavior in structures with breathing cracks. | Zexing Yu Chao Xu Fei Du Shancheng Cao Liaiigxian Gu | 2020 | Acta Mechanica Solida Sinica2020，33，6： | 2 |
| 9 | Amorphous NiO_(n)coupled with trace PtO_(x)toward superior electrocatalytic overall water splitting in alkaline seawater media显示文摘Developing corrosion resistance bifunctional electrocatalysts with high activity and stability toward both hydrogen evolution reaction(HER)and oxygen evolution reaction(OER),especially electrolysis in seawater,is of prime significance but still pressingly challenging.Herein,in-situ introduced PtO_(x)on the derivative amorphous NiO_(n)is prepared via heat treatment of Ni ZIFL nanosheets on nickel foam under low temperature(PtO_(x)-NiO_(n)/NF).The synthesized PtO_(x)-NiO_(n)/NF possesses suprahydrophilic and aerophilic surface,then in favor of intimate contact between the electrode and electrolyte and release of the generated gas bubbles during the electrocatalysis.As a result,the in-situ PtO_(x)-NiO_(n)/NF electrode presents outstanding bifunctional activity,which only requires extremely low overpotentials of 32 and 240 mV to reach a current density of 10 mA·cm^(-2)for HER and OER,respectively,which exceeds most of the electrocatalysts previously developed and even suppresses commercial Pt/C and RuO_(2)electrodes.As for two-electrode cell organized by PtO_(x)-NiO_(n)/NF,the voltages down to 1.57 and 1.58 V are necessary to drive 10 mA·cm^(-2)with remarkable durability in 1 M KOH and alkaline seawater,respectively,along with remarkable stability.Moreover,a low cell voltage of 1.88 V is needed to achieve 1,000 mA·cm^(-2)toward water-splitting under industrial conditions.This study provides a new idea for designing in-situ amorphous metal oxide bifunctional electrocatalyst with strong Pt–support interaction for overall water splitting. | Wenli Yu Hongru Liu Ying Zhao Yunlei Fu Weiping Xiao Bin Dong Zexing Wu Yongming Chai Lei Wang | 2023 | Nano Research2023，16，5： | 2 |
| 10 | Rational adjustment to interfacial interaction with carbonized polymer dots enabling efficient large-area perovskite light-emitting diodes显示文摘Film uniformity of solution-processed layers is the cornerstone of large-area perovskite light-emitting diodes,which is often determined by the‘coffee-ring effect’.Here we demonstrate a second factor that cannot be ignored is the solid-liquid interface interaction between substrate and precursor and can be optimized to eliminate rings.A perovskite film with rings can be formed when cations dominate the solid-liquid interface interaction;whereas smooth and homogeneous perovskite emitting layers are generated when anions and anion groups dominate the interaction.This is due to the fact that the type of ions anchored to the substrate can determine how the subsequent film grows.This interfacial interaction is adjusted using carbonized polymer dots,who also orient the perovskite crystals and passivate their buried traps,enabling a 225 mm^(2) large-area perovskite light-emitting diode with a high efficiency of 20.2%. | Fan Yang Qingsen Zeng Wei Dong Chunyuan Kang Zexing Qu Yue Zhao Haotong Wei Weitao Zheng Xiaoyu Zhang Bai Yang | 2023 | Light(Science & Applications)2023，12，6： | 1 |
| 11 | Quantitative assessment of the association between three polymorphisms in FAS and FASL gene and breast cancer risk显示文摘 | Zexing Wang Jun Gu Weiwei Nie Jing Xu Guichun Huang Xiaoxiang Guan | 2014 | Tumor Biology2014，，： | 1 |
| 12 | Static polarizabilities of copper cluster monocarbonyls Cuo (CO) (n =2 - 13) and selectivity of CO adsorption on copper clusters 显示文摘 | Cao Zexing Wang Yanjin Zhu Jun Wu Wei Zhang Qianer | 2002 | J Phys Chem B2002，106，： | 1 |
| 13 | Relationships between climate change, agricultural development and social stability in the Hexi Corridor over the last 2000 years显示文摘This case study of the Hexi Corridor, Northwestern China, utilizes statistical methods to estimate quantitatively the interaction at a regional level between climate change, ancient social developments, and political coping strategies over the past 2000 years. The data is sourced from high-resolution reconstructions of climate series(temperature and precipitation), and historical records of cultivated land, war, population, and changes in regional administrative systems. The results show that moisture conditions played a more significant role than temperature in driving land reclamation in the Hexi Corridor. Analysis also showed a negative correlation between war frequency and the area of cultivated land in the Corridor over 20-year time intervals. Population growth was found to have a significant positive correlation with the cultivated land area during the study period. The results indicate that a climate-induced decline in agricultural production and the subsequent fluctuations in population could act as a trigger for social unrest, which is especially true at the mutual decadal time-scales. However, the interaction with administrative reform also suggests that, in the face of social and economic turmoil, a reasonable administrative hierarchy could strengthen the social governance of regional government, and promote social stability and economic development at a regional level. The study substantiates this notion with empirical quantitative evidence. | Yanpeng LI Quansheng GE Huanjiong WANG Haolong LIU Zexing TAO | 2019 | Science China Earth Sciences2019，62，9： | 1 |
| 14 | Density functional study of multiple H2 adsorption and activation on a Pd6 cluster 显示文摘 | Yanjin Wang Zexing Cao Qianer Zhang | 2003 | Chemical Physics Letters2003，，376： | 1 |
| 15 | Co-Ru alloy nanoparticles decorated onto two-dimensional nitrogen doped carbon nanosheets towards hydrogen/oxygen evolution reaction and oxygen reduction reaction显示文摘Constructing highly-efficient electrocatalysts toward hydrogen evolution reaction(HER)/oxygen evolution reaction(OER)/oxygen reduction reaction(ORR)with excellent stability is quite important for the development of renewable energy-related applications.Herein,Co-Ru based compounds supported on nitrogen doped two-dimensional(2D)carbon nanosheets(NCN)are developed via one step pyrolysis procedure(Co-Ru/NCN)for HER/ORR and following low-temperature oxidation process(Co-Ru@RuO_(x)/NCN)for OER.The specific 2D morphology guarantees abundant active sites exposure.Furthermore,the synergistic effects arising from the interaction between Co and Ru are crucial in enhancing the catalytic performance.Thus,the resulting Co-Ru/NCN shows remarkable electrocatalytic performance for HER(70 mV at 10 mA cm^(-2))in 1 M KOH and ORR(half-wave potential E_(1/2)=0.81 V)in 0.1 M KOH.Especially,the Co-Ru@RuO_(x)/NCN obtained by oxidation exhibits splendid OER performance in both acid(230 mV at 10 mA cm^(-2))and alkaline media(270 mV at 10 mA cm^(-2))coupled with excellent stability.Consequently,the fabricated two-electrode water-splitting device exhibits excellent performance in both acidic and alkaline environments.This research provides a promising avenue for the advancement of multifunctional nanomaterials. | Huizhen Wang Pengfei Yang Xiaoyuan Sun Weiping Xiao Xinping Wang Minge Tian Guangrui Xu Zhenjiang Li Yubing Zhang Fusheng Liu Lei Wang Zexing Wu | 2023 | Journal of Energy Chemistry2023，，12： | 0 |
| 16 | Biomass derived nitrogen doped carbon with porous architecture as efficient electrode materials for supercapacitors显示文摘Developing porous carbon materials with low-cost, sustainable and eco-friendly natural resources is emerging as an ever important research field in the application of high-performance supercapacitor. In this paper, a simple synthetic method to fabricate nitrogen doped porous carbon(NPC) is developed via a one-pot carbonization of sodium alginate and urea. The as-prepared NPC annealed at 700℃ with mesoand macro-porous structure exhibits excellent specific capacitance(180.2 F/g at 1 A/g) and superior cycling life when serves as electrode materials for supercapacitor. Moreover, the investigation on the annealing temperature demonstrates that NPC pyrolysis at 700℃ possesses relatively high pyrrole nitrogen and pyridine nitrogen, which is favorable for enhancing supercapacitor performance. This work extends biomass derived carbon materials in energy storage applications. | Cuijuan Xuan ZongkaiPeng Jie Wang Wen Lei Kedong Xia Zexing Wu Weiping Xiao Deli Wang | 2017 | Chinese Chemical Letters2017，28，12： | 0 |
| 17 | Skincare plants of the Naxi of NW Yunnan, China显示文摘The Naxi of Northwest Yunnan,China use medicinal plants to treat skin conditions related to traditional lifestyles in extreme environments.However,modernization endangers both the medicinal plants used to treat skin conditions and traditional knowledge.Therefore,investigation and documentation of the medicinal plants used and associated traditional knowledge is necessary.In this study,we conducted an ethnobotanical survey in 12 Naxi communities in Northwest Yunnan.For this purpose,we used semistructured surveys to interview 840 informants from Naxi communities.We used informant consensus factor and use frequency as quantitative indices to evaluate the importance of medicinal plant species.A total of 161 medicinal plant species belonging to 69 families were documented.The highest informant consensus factor(ICF)values were recorded for skin nourishing(ICF?0.849),frostbite and chapped skin(ICF?0.833).These skin treatments are highly related to the environment and lifestyle of Naxi communities.The main active compounds of plants used to treat skin conditions in Naxi communities are known to have skin-treating properties.This study reveals that the skin conditions treated by the Naxi are associated with traditional medicine culture and social economic development.In addition,this study uses ethnobotanical indices to explain how skin condition treatments are linked to the natural environment of Naxi communities. | Yanqiang Zhao Zexing Yang Bayi Lang Manfred Shao Wu Meng Dayuan Xue Lu Gao Lixin Yang | 2020 | Plant Diversity2020，42，6： | 0 |
| 18 | Study on catalysts for combustion of lean CH_4显示文摘StudyoncatalystsforcombustionofleanCH_4ZhouZexing,YinLing,XuJingKesearchCenterforEco-FnvironmentalSciences,ChineseAcademyofSc... | Zhou Zexing, Yin Ling, Xu JingKesearch Center for Eco-Fnvironmental Sciences, Chinese Academy of Sciences.Beijing 100085, China | 1994 | Journal of Environmental Sciences1994，6，1： | 0 |
| 19 | Coupling ferromagnetic ordering electron transfer channels and surface reconstructed active species for spintronic electrocatalysis of water oxidation显示文摘Sluggish reaction kinetics of oxygen evolution reaction(OER), resulting from multistep proton-coupled electron transfer and spin constriction, limits overall efficiency for most reported catalysts. Herein, using modeled ZnFe_(2-x)Ni_xO_(4)(0 ≤ x ≤ 0.4) spinel oxides, we aim to develop better OER electrocatalyst through combining the construction of ferromagnetic(FM) ordering channels and generation of highly active reconstructed species. The number of symmetry-breaking Fe–O–Ni structure links to the formation of FM ordering electron transfer channels. Meanwhile, as the number of Ni^(3+)increases, more ligand holes are formed, beneficial for redirecting surface reconstruction. The electro-activated ZnFe_(1.6)Ni_(0.4)O_(4) shows the highest specific activity, which is 13 and 2.5 times higher than that of ZnFe_(2)O_(4) and unactivated ZnFe_(1.6)Ni_(0.4)O_(4), and even superior to the benchmark IrO_(2) under the overpotential of 350 mV. Applying external magnetic field can make electron spin more aligned, and the activity can be further improved to 39 times of ZnFe_(2)O_(4). We propose that intriguing FM exchange-field interaction at FM/paramagnetic interfaces can penetrate FM ordering channels into reconstructed oxyhydroxide layers, thereby activating oxyhydroxide layers as spin-filter to accelerate spin-selective electron transfer. This work provides a new guideline to develop highly efficient spintronic catalysts for water oxidation and other spin-forbidden reactions. | Zexing He Xiaokang Liu Minghui Zhang Lei Guo Muhammad Ajmal Lun Pan Chengxiang Shi Xiangwen Zhang Zhen-Feng Huang Ji-Jun Zou | 2023 | Journal of Energy Chemistry2023，，10： | 0 |
| 20 | Influences of substituting of(Ni_(1/3)Nb(2/3))for Ti^(4+)on the phase compositions,microstructures,and dielectric properties of Li_(2)Zn[Ti_(1-x)(Ni_(1/3)Nb_(2/3))_(x)]_(3)O_(8)(0<≤x≤0.3)microwave ceramics显示文摘Complex ion substitution is gaining more attention as an appealing method of modifying the structure and performance of microwave ceramics.In this work,Li_(2)Zn[Ti_(1-x)(Ni_(1/3)Nb_(2/3))_(x)]_(3)O_(8),0≤x≤0.3ceramics were designed based on the complex ion substitution strategy,following the substitution rule of radius and valence to investigate the relationship among phase compositions(containing oxygen vacancies and Ti^(3+)ions),microstructures,and microwave dielectric characteristics of the LZTNNx ceramics.The samples maintained a single Li_(2)ZnTi_(3)O_(8)solid solution phase as x≤0.2,whereas the sample of x=0.3 produced a second phase with the LiNbO_(3)structure.The appropriate amount of(Ni_(1/3)Nb_(2/3))^(4+)substitution could slightly improve the densification of the LZTNNx ceramics due to the formation of the LiZnTi_(3)O_(8)solid solution accompanied by a decrease in the average grain size.The presence of a new Aig Raman active band at about 848 cm^(-1)indicated that local symmetry changed,affecting atomic interactions of the LZTNNx ceramics.The variation of the relative dielectric constant(εr)was closely related to the molar volume ionic polarizability(α_(D)^(T)),and the temperature coefficient of the resonant frequency(τ_(f))was related to the bond valence(V_(1))of Ti.The increase in density,the absence of the Ti3+ions and oxygen vacancies,and the reduction in damping behavior were responsible for the decreased dielectric loss.The LZTNNO.2 ceramics sintered at 1120℃exhibited favorable microwave dielectric properties:εr=22.13,quality factor(Q×f)=97,350 GHz,andτ_(f)=-18.60 ppm/C,which might be a promising candidate for wireless communication applications in highly selective electronics. | Jiamao Li Zexing Wang Yunfeng Guo Songlin Rana | 2023 | Journal of Advanced Ceramics2023，12，4： | 0 |
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