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| 1 | Review and discussion on fire behavior of bridge girders显示文摘This paper presents an overview on fire behavior of bridge girders mainly including prestressed concrete(PC) bridge girders and steel bridge girders. The typical fire accidents occurred on bridges are illustrated and, the seriousness of posing threats to bridge structures resulted from increasing traffic fires, specially intense hydrocarbon fires generated from petrol-chemicals, is highlighted. The current researches, embracing high-temperature properties of constituent materials, prestress state, measurement in fire tests, numerical methods, structural fire resistance, and so forth, taken on coping with problems existing in fire behavior and structural fire behavior in bridge girders are reviewed and discussed. Further, strategies for enhancing fire resistance of bridge girders followed with failure criterion and mode in types of bridge structures are provided. Future research area along with emerging trends in structural fire behavior of bridge girders is also recommended for mitigating fire hazards occurred on bridge girders. Herein, it can be attained a conclusion from review and discussion that prestressed concrete bridge girders with thin webs, specially T-shaped bridge girder, are prone to unstable under fire exposure conditions. High-strength concrete utilized in prestressed concrete bridge girders is vulnerable to spalling at elevated temperature. Steel-truss bridge girder present a more significant fragility to fire exposure compared than other steel bridge girders. | Gang Zhang Xiaocui Zhao Zelei Lu Chaojie Song Xuyang Li Chenhao Tang | 2022 | Journal of Traffic and Transportation Engineering(English Edition)2022，9，3： | 11 |
| 2 | Flexible control strategy for HVDC transmission system adapted to intermittent new energy delivery显示文摘Intermittent new energy delivery requires increasing the flexibility of ultra-high voltage direct current(DC)power adjustment.Based on a converter steady-state model and a DC power model,the control angle constraints of a converter valve are relaxed for power regulation.In this paper,a flexible DC power control method based on a fixed tap changer position is proposed.The initial ratio of the converter transformer is optimized.The effects of the fixed-tap changer position control on the control angle,reactive power compensation,and commutation failure are analyzed.The new control method allows a DC system to operate at a large angle and increase the additional reactive power loss while improving the commutation security margin.Steady-state and electromagnetic transient simulations in the CIGRE test system verify the validity of the method proposed in this paper and the correctness of the analysis conclusions. | Chenhao Li Kuan Li Changhui Ma Pengfei Zhang Qi Tao Yingtao Sun Xin Wang | 2021 | Global Energy Interconnection2021，4，4： | 6 |
| 3 | Spatiotemporal variation in snow cover and its effects on grassland phenology on the Mongolian Plateau显示文摘Snow cover is an important water source for vegetation growth in arid and semi-arid areas,and grassland phenology provides valuable information on the response of terrestrial ecosystems to climate change.The Mongolian Plateau features both abundant snow cover resources and typical grassland ecosystems.In recent years,with the intensification of global climate change,the snow cover on the Mongolian Plateau has changed correspondingly,with resulting effects on vegetation growth.In this study,using MOD10A1 snow cover data and MOD13A1 Normalized Difference Vegetation Index(NDVI)data combined with remote sensing(RS)and geographic information system(GIS)techniques,we analyzed the spatiotemporal changes in snow cover and grassland phenology on the Mongolian Plateau from 2001 to 2018.The correlation analysis and grey relation analysis were used to determine the influence of snow cover parameters(snow cover fraction(SCF),snow cover duration(SCD),snow cover onset date(SCOD),and snow cover end date(SCED))on different types of grassland vegetation.The results showed wide snow cover areas,an early start time,a late end time,and a long duration of snow cover over the northern Mongolian Plateau.Additionally,a late start,an early end,and a short duration were observed for grassland phenology,but the southern area showed the opposite trend.The SCF decreased at an annual rate of 0.33%.The SCD was shortened at an annual rate of 0.57 d.The SCOD and SCED in more than half of the study area advanced at annual rates of 5.33 and 5.74 DOY(day of year),respectively.For grassland phenology,the start of the growing season(SOS)advanced at an annual rate of 0.03 DOY,the end of the growing season(EOS)was delayed at an annual rate of 0.14 DOY,and the length of the growing season(LOS)was prolonged at an annual rate of 0.17 d.The SCF,SCD,and SCED in the snow season were significantly positively correlated with the SOS and negatively correlated with the EOS and LOS.The SCOD was significantly negatively correlated with the SOS and positively correlated with the EOS and LOS.The SCD and SCF can directly affect the SOS of grassland vegetation,while the EOS and LOS were obviously influenced by the SCOD and SCED.This study provides a scientific basis for exploring the response trends of alpine vegetation to global climate change. | SA Chula MENG Fanhao LUO Min LI Chenhao WANG Mulan ADIYA Saruulzaya BAO Yuhai | 2021 | Journal of Arid Land2021，13，4： | 5 |
| 4 | Acquisition of channel state information for mm Wave massive MIMO: traditional and machine learning-based approaches显示文摘The accuracy of channel state information(CSI) acquisition directly affects the performance of millimeter wave(mmWave) communications. In this article, we provide an overview on CSI acquisition,including beam training and channel estimation for mmWave massive multiple-input multiple-output systems.The beam training can avoid the estimation of a high-dimension channel matrix, while the channel estimation can flexibly exploit advanced signal processing techniques. In addition to introducing the traditional and machine learning-based approaches in this article, we also compare different approaches in terms of spectral efficiency, computational complexity, and overhead. | Chenhao QI Peihao DONG Wenyan MA Hua ZHANG Zaichen ZHANG Geoffrey Ye LI | 2021 | Science China(Information Sciences)2021，64，8： | 3 |
| 5 | Al2O3 supported hybrid Pd-CeO2 colloidal spheres and its enhanced catalytic performances for methane combustion显示文摘Fabrication of novel nano-catalyst with improved activity and stability has been a hot topic in heterogeneous catalysis. Herein a novel approach was designed to synthesize Pd-CeO2 colloidal assembled spheres(CASs) in one-pot fashion. The Pd clusters were encompassed by the CeO2 nanocrystals with a high dispersity. Based on this hybrid structure, the Pd/ceria interface area can be greatly improved. After Pd-CeO2 CASs was supported on γ-Al2O3, its catalytic activity for CH4 combustion was evaluated. The result shows that Al2O3 supported Pd-CeO2 CASs exhibits an improved catalytic activity and stability,compared to the Pd/CeO2 catalyst prepared by impregnation method. The results of several characterization techniques indicate that the enhanced catalytic activity of Al2O3 supported Pd-CeO2 CASs can be attributed to the more interfacial Pd-O-Ce species and the more surface active oxygen species. | Xinwei Yang Chenhao Du Yanglong Guo Yun Guo Li Wang Yunsong Wang Wangcheng Zhan | 2019 | Journal of Rare Earths2019，37，7： | 2 |
| 6 | Multi-action self-healing coatings with simultaneous recovery of corrosion resistance and adhesion strength显示文摘In this study, a new self-healing strategy that can simultaneously recover the corrosion resistance and the adhesion strength of coatings was introduced. The coating was based on a shape memory epoxy resin containing ethylene vinyl acetate(EVA) microspheres loaded with Ce(NO_(3))_(3)inhibitors, and was cured at a relatively high temperature to facilitate the fusion of adjacent microspheres for a strengthened self-healing effect. The electrochemical impedance spectroscopy(EIS) and scanning electrochemical microscopy(SECM) results demonstrated that the shape memory effect of epoxy matrix, the filling of molten EVA microspheres as well as the release of Ce(NO_(3))_(3)inhibitors contributed synergistically to suppress the corrosion reaction at the coating damage. After healing, the low frequency impedance modulus of the coatings containing Ce(NO_(3))_(3)-EVA microspheres was three orders of magnitude higher than that of the blank epoxy coating. The adhesion strength of the coatings containing Ce(NO_(3))_(3)-EVA microspheres on the metal substrate was also largely repaired thanks to the strong bonding effect of the EVA microspheres. | Chenhao Ren Yao Huang Wenkui Hao Dawei Zhang Xiejing Luo Lingwei Ma Jinke Wang Thee Chowwanonthapunya Chaofang Dong Xiaogang Li | 2022 | Journal of Materials Science & Technology2022，，6： | 2 |
| 7 | Synergistic effect between a novel hyperbranched flame retardant and melamine pyrophosphate on the char forming of polyamide 6显示文摘 | Keyi Fang Juan Li Chenhao Ke | | 0，，49： | 1 |
| 8 | Synergistic effect betweena hyperbranched charring agent and ammonium polyphosphateon the intumescent flame retardance of acrylonitrile-butadienestyrenepolymer显示文摘 | Li Juan Ke Chenhao Xu Liang | 2012 | Polymer Degradation and Stability2012，97，11： | 1 |
| 9 | Synergistic Effect Between a Novel Hyperbranched Flame Retardant and Melamine Pyrophosphate on the Char Forming of Polya- mide 6显示文摘 | Keyi Fang Juan Li Chenhao Ke | 2010 | Polymer-Plastics Technology and Engineering2010，49，： | 1 |
| 10 | Enhancement of a Hyperbranched Charring and Foaming Agent on Flame Retardaney of Polyamide 6显示文摘 | Chenhao Ke Juan Li Keyi Fang | 2011 | Polym Adv Technol2011，22，： | 1 |
| 11 | Enhancement of a Hyperbranched Charring and Foaming Agent on Flame Retardancy of Polyamide 6 显示文摘 | Ke Chenhao Li Juan Fang Keyi | 2011 | Polymers for Advanced Technologies2011，，： | 1 |
| 12 | Synergistic Effect Between a Novel Hyperbranched Charring Agent and Ammonium Polyphosphate on the Flame Retardant and Anti-dripping Properties of Polylactide 显示文摘 | Ke Chenhao Li Juan Fang Keyi | 2010 | Polymer De- gra- dation and Stability2010，95，5： | 1 |
| 13 | Microstructure and wear resistance of Fe-based coatings formed by plasma jet surface metallurgy 显示文摘 | Chenhao Li Huiqi | 2006 | Materials Letters2006，60，11： | 1 |
| 14 | Synergistic Effect Between a Novel Hyperbranched Charring Agent and Ammonium Polyphosphate on the Flame Retardant and Anti dripping Properties of Polylactide显示文摘 | Ke Chenhao Li Juan Fang Keyi | 2010 | Polymer Deg radation and Stability2010，95，： | 1 |
| 15 | Synergistic effect between anovel hyperbranched charring agent and ammonium polyphosphate on the flame retardant and anti-dripping properties of polylactide显示文摘 | Ke Chenhao Li Juan Fang Keyi | 2010 | Polymer Degradation and Stability2010，95，5： | 1 |
| 16 | A Novel mRNA Signature Related to Immunity to Predict Survival and Immunotherapy Response in Hepatocellular Carcinoma显示文摘Background and Aims:Hepatocellular carcinoma(HCC)is the most common primary liver cancer and the incidence and mortality rates are increasing.Given the limited treatments of HCC and promising application of immunotherapy for cancer,we aimed to identify an immune-related prognostic signature that can predict overall survival(OS)rates and immunotherapy response in HCC.Methods:The initial signature development was conducted using a training dataset from the Cancer Genome Atlas followed by independent internal and external validations from that resource and the Gene Expression Omnibus.A signature based nomogram was generated using multivariate Cox regression analysis.The associations of signature score with tumor immune phenotype and response to immunotherapy were analyzed using single-sample gene set enrichment analysis and tumor immune dysfunction and exclusion algorithm.A cohort from Zhongshan Hospital was employed to verify the pre dictive robustness of the signature regarding prognostic risk and immunotherapy response.Results:The prognostic signature,IGS_(HCC),consisting of 22 immune-related genes,had independent prognostic ability,with training and validation cohorts.Also,IGS_(HCC)stratified HCC patients with different outcomes in subgroups.The prognostic accuracy of IGS_(HCC)was better than three reported prognostic signatures.The IGS_(HCC)-based nomogram had high accuracy and significant clinical benefits in predicting 3-and 5-year OS.IGS_(HCC)reflected distinct immunosuppressive phenotypes in low-and high-score groups.Patients with low IGS_(HCC)scores were more likely than those with high scores to benefit from immunotherapy.Conclusions:IGS_(HCC)predicted HCC prognosis and response to immunotherapy,and contributed to individualized clinical management. | Chenhao Zhou Jialei Weng Yuan Gao Chunxiao Liu Xiaoqiang Zhu Qiang Zhou Chia-Wei Li Jialei Sun Manar Atyah Yong Yi Qinghai Ye Yi Shi Qiongzhu Dong Yingbin Liu Mien-Chie Hung Ning Ren | 2022 | Journal of Clinical and Translational Hepatology2022，10，5： | 1 |
| 17 | Exome sequencing identifies rare mutations of LDLR and QTRT1 conferring risk for early-onset coronary artery disease in Chinese显示文摘Despite the advances made over the past decades,the known loci for coronary artery disease(CAD)still only explain<20%of the genetic variation in risk[1,2].The known loci with the strongest effects usually confer a 20%-37%increased CAD risk and the most loci modulate risk by≤10%[1].While most of the current data are from European populations,the use of trans-ethnic analyses could be helpful to identify additional loci.Genetic inheritance may impose a high burden on early-onset coronary artery disease(EOCAD). | Kang Yao Yuxiang Dai Juan Shen Yi Wang Huanjie Yang Runda Wu Qijun Liao Hongyi Wu Xiaodong Fang Shalaimaiti Shali Lili Xu Meng Hao Chenhao Lin Zhonghan Sun Yilian Liu Mengxin Li Zhen Wang Qiang Gao Shuning Zhang Chenguang Li Wei Gao Lei Ge Yunzeng Zou Aijun Sun Juying Qian Li Jin Shangyu Hong Yan Zheng Junbo Ge | 2022 | National Science Review2022，9，8： | 1 |
| 18 | 显示文摘 | Keyi Fang Juan Li Chenhao Ke | 2010 | Polymer-Plastics Technology and Engineering2010，49，： | 1 |
| 19 | Investigation of electronic excited states in single-molecule junctions显示文摘The investigation of electronic excited states in single-molecule junctions not only provides platforms to reveal the photophysical and photochemical processes at the molecular level,but also brings opportunities for the development of single-molecule optoelectronic devices.Understanding the interaction mechanisms between molecules and nanocavities is essential to obtain ondemand properties in devices by artificial design,since molecules in junctions exhibit unique behaviors of excited states benefited from the structures of metallic nanocavities.Here,we review the excitation mechanisms involved in the interplay between molecules and plasmonic nanocavities,and reveal the influence of nanostructures on excited-state properties by demonstrating the differences in excited state decay processes.Furthermore,vibronic transitions of molecules between nanoelectrodes are also discussed,offering a new single-molecule characterization method.Finally,we provide the potential applications and challenges in single-molecule optoelectronic devices and the possible directions in exploring the underlying mechanisms of photophysical and photochemical processes. | Wei Xu Ruihao Li Chenhao Wang Jiahe Zhong Junyang Liu Wenjing Hong | 2022 | Nano Research2022，15，6： | 1 |
| 20 | 装配式建筑密封胶的粘接可靠性检测研究显示文摘装配式建筑中,防水密封质量一直都是引人关注的话题,其防水的密封质量关键在于密封胶与墙板的粘接可靠性。在装配式建筑中,密封胶尤其以改性硅胶质量最优,其不管是粘接性,还是耐候性,或者是稳定性都是优等。选择密封胶,要保证其粘接可靠性达到85%以上,否则易影响建筑的防水质量。 | 陈阳 张文军 桂波 梁志伟 LI Chenhao | 2023 | 粘接2023，50，3： | 1 |
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