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| 1 | Epidemic spreading behavior in local-world evolving networks显示文摘The susceptible-infected-susceptible(SIS)epidemic model is presented which can be used to study the epidemic spreading behavior in the local-world evolving network model.Local-world evolving model displays a transition from the exponential network to the scale-free network with respect to the connectivity distribution.From theoretical analyses and numerical simulations,we find that the epidemic spreading behavior on local-world networks also takes on some kind of transitional behaviors.The transitional behavior is further ver-ified by comparing the spreading behavior of local-world network with that of random and scale-free networks.Some feasible control strategies are also proposed to keep from the epidemic spreading on networks. | Chengyi Xia Zhongxin Liu Zengqiang Chen Shiwen Sun Zhuzhi Yuan | 2008 | Progress in Natural Science:Materials International2008，18，6： | 17 |
| 2 | Advanced Functional Fiber and Smart Textile显示文摘The research and applications of fiber materials are directly related to the daily life of social populace and the development of relevant revolutionary manufacturing industry.However,the conventional fibers and fiber products can no longer meet the requirements of automation and intellectualization in modern society,as well as people’s consumption needs in pursuit of smart,avant-grade,fashion and distinctiveness.The advanced fiber-shaped electronics with most desired designability and integration features have been explored and developed intensively during the last few years.The advanced fiber-based products such as wearable electronics and smart clothing can be employed as the second skin to enhance information exchange between humans and the external environment.In this review,the significant progress on flexible fiber-shaped multifunctional devices,including fiber-based energy harvesting devices,energy storage devices,chromatic devices,and actuators are discussed.Particularly,the fabrication procedures and application characteristics of multifunctional fiber devices such as fiber-shaped solar cells,lithium-ion batteries,actuators and electrochromic fibers are introduced in detail.Finally,we provide our perspectives on the challenges and future development of functional fiber-shaped devices. | Qiuwei Shi Jianqi Sun Chengyi Hou Yaogang Li Qinghong Zhang Hongzhi Wang | 2019 | Advanced Fiber Materials2019，1，1： | 7 |
| 3 | Cosmological evolution of quintessence with a sign-changing interaction in dark sector显示文摘Dark energy and dark matter are only indirectly measured though their gravitational effects.It is possibie that there is some direct,non-gravitational interaction between DE and DM,which can be used to solve(or,at least alleviate)several important theoretical problems.In the present work,by analysing the cosmological dynamical system with a dark-sector interaction which changes its sign during the cosmological evolution,we find a scaling attractor to help to alleviate the cosmic-coincidence problem.This result shows that this interaction can bring new features to the cosmology. | ZHANG Ming SUN ChengYi YANG ZhanYing YUE RuiHong | 2014 | Science China(Physics,Mechanics & Astronomy)2014，57，9： | 3 |
| 4 | Two Ultraviolet Radiation Datasets that Cover China显示文摘Ultraviolet(UV) radiation has significant effects on ecosystems, environments, and human health, as well as atmospheric processes and climate change. Two ultraviolet radiation datasets are described in this paper. One contains hourly observations of UV radiation measured at 40 Chinese Ecosystem Research Network stations from 2005 to 2015. CUV3 broadband radiometers were used to observe the UV radiation, with an accuracy of 5%, which meets the World Meteorology Organization's measurement standards. The extremum method was used to control the quality of the measured datasets. The other dataset contains daily cumulative UV radiation estimates that were calculated using an all-sky estimation model combined with a hybrid model. The reconstructed daily UV radiation data span from 1961 to 2014. The mean absolute bias error and root-mean-square error are smaller than 30% at most stations, and most of the mean bias error values are negative, which indicates underestimation of the UV radiation intensity. These datasets can improve our basic knowledge of the spatial and temporal variations in UV radiation. Additionally, these datasets can be used in studies of potential ozone formation and atmospheric oxidation, as well as simulations of ecological processes. | Hui LIU Bo HU Yuesi WANG Guangren LIU Liqin TANG Dongsheng JI Yongfei BAI Weikai BAO Xin CHEN Yunming CHEN Weixin DING Xiaozeng HAN Fei HE Hui HUANG Zhenying HUANG Xinrong LI Yan LI Wenzhao LIU Luxiang LIN Zhu OUYANG Boqiang QIN Weijun SHEN Yanjun SHEN Hongxin SU Changchun SONG Bo SUN Song SUN Anzhi WANG Genxu WANG Huimin WANG Silong WANG Youshao WANG Wenxue WEI Ping XIE Zongqiang XIE Xiaoyuan YAN Fanjiang ZENG Fawei ZHANG Yangjian ZHANG Yiping ZHANG Chengyi ZHAO Wenzhi ZHAO Xueyong ZHAO Guoyi ZHOU Bo ZHU | 2017 | Advances in Atmospheric Sciences2017，34，7： | 2 |
| 5 | Epidemiologic Characteristics of Cases for Influenza A(H7N9) Virus Infections in China显示文摘 | Wenyi Zhang Liya Wang Wenbiao Hu Fan Ding Hailong Sun Shenlong Li Liuyu Huang Chengyi Li | 2013 | Clinical Infectious Diseases2013，，4： | 1 |
| 6 | Epidemics of SIRS model with non-uniform transmission on scale-free networks显示文摘 | Xia Chengyi Sun Shiwen Liu Zhongxin | 2009 | International Journal of Modern Physics B2009，23，9： | 1 |
| 7 | An SIR model with infection delay and propagation vector in complex networks显示文摘 | Xia Chengyi Wang Li Sun Shiwen | | 0，，3： | 1 |
| 8 | Finite-time stability of multi-agent system in disturbed environment显示文摘 | Li Wang Shiwen Sun Chengyi Xia | 2012 | Nonlinear Dynamics2012，，3： | 1 |
| 9 | MEC dissimilation strategy by rejected regions 显示文摘 | Chengyi Sun Junli Wang Jianqing Zhang | 2001 | IEEE International conferenceon2001，10，1： | 1 |
| 10 | A Meta-Analysis of the Effect of Preoperative Biliary Stenting on Patients With Obstructive Jaundice显示文摘 | Chengyi Sun Guirong Yan Zhiming Li Chi-Meng Tzeng | 2014 | Medicine2014，，： | 1 |
| 11 | Astrocytic endothelin-1 overexpression impairs learning and memory ability in ischemic stroke via altered hippocampal neurogenesis and lipid metabolism显示文摘Vascular etiology is the second most prevalent cause of cognitive impairment globally.Endothelin-1,which is produced and secreted by endothelial cells and astrocytes,is implicated in the pathogenesis of stroke.However,the way in which changes in astrocytic endothelin-1 lead to poststroke cognitive deficits following transient middle cerebral artery occlusion is not well understood.Here,using mice in which astrocytic endothelin-1 was overexpressed,we found that the selective overexpression of endothelin-1 by astrocytic cells led to ischemic stroke-related dementia(1 hour of ischemia;7 days,28 days,or 3 months of reperfusion).We also revealed that astrocytic endothelin-1 overexpression contributed to the role of neural stem cell proliferation but impaired neurogenesis in the dentate gyrus of the hippocampus after middle cerebral artery occlusion.Comprehensive proteome profiles and western blot analysis confirmed that levels of glial fibrillary acidic protein and peroxiredoxin 6,which were differentially expressed in the brain,were significantly increased in mice with astrocytic endothelin-1 overexpression in comparison with wild-type mice 28 days after ischemic stroke.Moreover,the levels of the enriched differentially expressed proteins were closely related to lipid metabolism,as indicated by Kyoto Encyclopedia of Genes and Genomes pathway analysis.Liquid chromatography-mass spectrometry nontargeted metabolite profiling of brain tissues showed that astrocytic endothelin-1 overexpression altered lipid metabolism products such as glycerol phosphatidylcholine,sphingomyelin,and phosphatidic acid.Overall,this study demonstrates that astrocytic endothelin-1 overexpression can impair hippocampal neurogenesis and that it is correlated with lipid metabolism in poststroke cognitive dysfunction. | Jie Li Wen Jiang Yuefang Cai Zhenqiu Ning Yingying Zhou Chengyi Wang Sookja Ki Chung Yan Huang Jingbo Sun Minzhen Deng Lihua Zhou Xiao Cheng | 2024 | Neural Regeneration Research2024，19，3： | 1 |
| 12 | Finite-time sta bili- ty of multi-agent system in disturbed environment显示文摘 | WANG Li SUN Shiwen XIA Chengyi | 2012 | Non- linear dynamics2012，67，3： | 1 |
| 13 | Stem cell research in hepatocellular carcinoma显示文摘The traditional view that adult human liver tumors,mainly hepatocellular carcinoma(HCC),arise from mature cell types has been challenged in recent dec-ades.The results of several studies suggest that HCC can be derived from liver stem cells.There are four levels of cells in the liver stem cell lineage:hepatocytes,hepatic stem cells/oval cells,bone marrow stem cells and hepato-pancreas stem cells.However,whether HCC is resulted from the differentiation block of stem cells and,moreover,which liver stem cell lineage is the source cell of hepatocarcinogenesis remain controversial.In this review,we focus on the current status of liver stem cell research and their roles in carcinogenesis of HCC,in order to explore new approaches for stem cell therapy of HCC. | Chengyi SUN Shi ZUO | 2008 | Frontiers of Medicine2008，2，1： | 0 |
| 14 | When insulating polymers meet conjugated polymers:the noncovalent bonding does matter显示文摘Insulating polymers are characterized by a predominantlyσ-covalent structure,which localize electrons in the atoms and exhibit dielectricity.Insulating polymers typically adopt a more linear and extended conformation,as the repeating units are connected by single covalent bonds,resulting in a relatively straight and extended chain structure.For most insulating polymers,the contour length(L_(c))is significantly larger than their persistence length(Lp)due to the rotation of C−C single bonds(Fig.1(a)).Consequently,this leads to a flexible,random-coil chain conformation.This structural feature contributes to the great mechanical durability and resistance to crack initiation during stretching or bending processes.In contrast,conjugated polymers possess aπ-conjugated molecular structure,allowing electron mobility along the main chain,called delocalization,which imparts semiconducting properties[1,2].The presence of rigid,alternating single and multiple bonds results in comparable Lc and Lp,thereby yielding a stiff or semi-flexible conformation(Fig.1(b))[3,4].As a consequence,most conjugated polymers are prone to fracture under low strain levels(<10%)[5−7]. | Zhonggao Bu Chengyi Xiao Jie Sun Weiwei Li Liming Ding | 2023 | Journal of Semiconductors2023，44，11： | 0 |
| 15 | Research on Flexible GaInP/GaInAs/Ge/Bi2Te3/Sb2Te3 PV-TE Integrated Systems显示文摘An optimal structure design of the lattice mismatched GaInP/GaInAs/Ge solar cell with high photoelectric conversion efficiency was proposed. Two-dimensional Bi2Te3/Sb2Te3 nanosheets were prepared by solvothermal synthesis method used as thermoelectric(TE) functional materials, which is further hybrid with high conductive reduced graphene oxide(rGO) and carbon nanotubes(CNTs). TE film was then fabricated based on above materials. The power factor of the n-type TE film is 19.31 μW/mK2, and the power factor of the p-type TE film is 97.40 μW/mK2. The flexible TE device was integrated with flexible solar cell. Compared with the single photovoltaic(PV) cell, the efficiency of the as-prepared flexible integrated device measured under the AM1.5 illumination is significantly improved. The efficiency of the two parallel tests is increased from 27.26% and 26.59%, to 29.11% and 28.92%, respectively. The increasing ratio reaches 6.7%-8.8%. | 高鹏 CHEN Lilin WU Bo ZHANG Qiming XUE Chao HOU Chengyi SUN Qiang | 2019 | Journal of Wuhan University of Technology(Materials Science)2019，34，4： | 0 |
| 16 | Epidemic spreading behavior with time delay on local-world evolving networks显示文摘An improved susceptible-infected-susceptible(SIS)model in the local-world evolving network model is presented to study the epidemic spreading behavior with time delay,which is added into the infected phase.The local-world evolving model displays a transition from the exponential network to the scale-free network with respect to the degree distribution.Two typical delay regimes,i.e.,uniform and degree-dependent delays are incorporated into the SIS epidemic model to investigate the epidemic infection processes in the local-world net-work model.The results indicate that the infection delay will promote the epidemic outbreaks,increase the prevalence and reduce the critical threshold of epidemic spreading.It is also found that local-world size M will considerably influence the epidemic spreading behavior with time delay in the local-world network through large-scale numerical simulations.Simulation results are also of relevance to fight epidemic outbreaks. | Chengyi XIA Zhongxin LIU Zengqiang CHEN Shiwen SUN Zhuzhi YUAN | 2008 | Frontiers of Electrical and Electronic Engineering in China2008，3，2： | 0 |
| 17 | Ultralow Interfacial Thermal Resistance of Graphene Thermal Interface Materials with Surface Metal Liquefaction显示文摘Developing advanced thermal interface materials(TIMs)to bridge heat-generating chip and heat sink for constructing an efficient heat transfer interface is the key technology to solve the thermal management issue of high-power semiconductor devices.Based on the ultra-high basal-plane thermal conductivity,graphene is an ideal candidate for preparing high-performance TIMs,preferably to form a vertically aligned structure so that the basal-plane of graphene is consistent with the heat transfer direction of TIM.However,the actual interfacial heat transfer efficiency of currently reported vertically aligned graphene TIMs is far from satisfactory.In addition to the fact that the thermal conductivity of the vertically aligned TIMs can be further improved,another critical factor is the limited actual contact area leading to relatively high contact thermal resistance(20-30 K mm^(2) W^(−1))of the“solid-solid”mating interface formed by the vertical graphene and the rough chip/heat sink.To solve this common problem faced by vertically aligned graphene,in this work,we combined mechanical orientation and surface modification strategy to construct a three-tiered TIM composed of mainly vertically aligned graphene in the middle and micrometer-thick liquid metal as a cap layer on upper and lower surfaces.Based on rational graphene orientation regulation in the middle tier,the resultant graphene-based TIM exhibited an ultra-high thermal conductivity of 176 W m^(−1) K^(−1).Additionally,we demonstrated that the liquid metal cap layer in contact with the chip/heat sink forms a“liquid-solid”mating interface,significantly increasing the effective heat transfer area and giving a low contact thermal con-ductivity of 4-6 K mm^(2) W^(−1) under packaging conditions.This finding provides valuable guidance for the design of high-performance TIMs based on two-dimensional materials and improves the possibility of their practical application in electronic thermal management. | Wen Dai Xing-Jie Ren Qingwei Yan Shengding Wang Mingyang Yang Le Lv Junfeng Ying Lu Chen Peidi Tao Liwen Sun Chen Xue Jinhong Yu Chengyi Song Kazuhito Nishimura Nan Jiang Cheng-Te Lin | 2023 | Nano-Micro Letters2023，15，1： | 0 |
| 18 | Development of a new hydrophobic magnetic biochar for removing oil spills on the water surface显示文摘More technologies are urgently needed for combined use to effectively eliminate the effect of oil spills,an environmental problem of widespread concern.Among these technologies,sorption methods are available to remove residual oil and prevent the further spread on the water surface.In this study,biochars,prepared from different feed-stock materials and pyrolysis temperatures,were screened and further modified to improve their application in the water environment.Among cornstalk biochar(CSBC),corncob biochar(CCBC),Sophora sawdust biochar(SSBC),and rice husk biochar(RHBC),the CSBC had excellent oil sorption capacity,especially prepared at 350℃(CSBC350),which has a complete and full pore structure.Furthermore,magnetic and silane agent modifications of CSBC350(OMBC)were performed to enhance the properties of the magnetic field controllability and hydrophobicity to increase oil sorption.The OMBC exhibited satisfactory oil sorption capacities to crude oil,diesel oil,and engine oil in the water-oil system of 8.77 g g^(−1),4.01 g g^(−1),and 4.44 g g^(−1),respectively.The sorption process of CSBC350 and OMBC complied with the pseudo-second-order kinetics(R^(2)>0.97)and the Langmuir isotherm models(R^(2)>0.80)based on the highest regression coefficients.The sorption mechanisms are dominated by hydrophobic forces,pore intercepts,and hydrogenbond interactions.The biochar adsorbent can availably cooperate with other physical methods to eliminate oil contaminants,which can be an outstanding fuel source for producing heat. | Xiaojun Sun Hongrui Fu Mutai Bao Wei Liu Chengyi Luo Yang Li Yiming Li Jinren Lu | 2022 | Biochar2022，4，1： | 0 |
| 19 | A novel policy iteration algorithm for solving the optimal consensus control problem of a discrete-time multiagent system with unknown dynamics显示文摘At present,an increasing number of researchers have noticed the importance of optimal consensus control(OCC)of multiagent systems(MASs)because of their rich practical applications in various areas[1–4]. | Wenkai XU Li WANG Shiwen SUN Chengyi XIA &Zengqiang CHEN | 2023 | Science China(Information Sciences)2023，66，8： | 0 |
| 20 | Barium-doped Pr_(2)Ni_(0.6)Cu_(0.4)O_(4+δ) with triple conducting characteristics as cathode for intermediate temperature proton conducting solid oxide fuel cell显示文摘Proton conducting solid oxide fuel cell(H-SOFC)is an emerging energy conversion device,with lower activation energy and higher energy utilization efficiency.However,the deficiency of highly active cathode materials still remains a major challenge for the development of H-SOFC.Therefore,in this work,K_(2)NiF_(4)-type cathode materials Pr_(2-x)Ba_(x)Ni_(0.6)Cu_(0.4)O_(4+δ)(x=0,0.1,0.2,0.3),single-phase tripleconducting(e-/O^(2-)/H^(+))oxides,are prepared for intermediate temperature H-SOFCs and exhibit good oxygen reduction reaction activity.The investigation demonstrates that doping Ba into Pr_(2-x)BaxNi_(0.6)Cu_(0.4)O_(4+δ) can increase its electrochemical performance through enhancing electrical conductivity,oxygen vacancy concentration and proton conductivity.EIS tests are carried at 750℃ and the minimum polarization impedances are obtained when x=0.2,which are 0.068 Ω·cm^(2) in air and 1.336 Ω·cm^(2) in wet argon,respectively.The peak power density of the cell with Pr_(1.8)Ba_(0.2)Ni_(0.6)Cu_(0.4)O_(4+δ) cathode is 298 mW·cm^(-2) at 750℃ in air with humidified hydrogen as fuel.Based on the above results,Ba-doped Pr_(2-x)Ba_(x)Ni_(0.6)Cu_(0.4)O_(4+δ) can be a good candidate material for SOFC cathode applications. | Chengyi Ai Tingting Li Rongzheng Ren Zhenhua Wang Wang Sun Jinsheng Feng Kening Sun Jinshuo Qiao | 2021 | Chinese Journal of Chemical Engineering2021，34，11： | 0 |
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