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| 1 | Urban expansion in China and its effect on cultivated land before and after initiating'Reform and Open Policy'显示文摘Urbanization in China has expanded at an unprecedented speed since the declaration of 'Reform and Open Policy'and presented many challenges. Unbalanced regional development, appearance of super megacities and concomitant problems,and conflicts between urbanization and cultivated land protection are three critical problems that Chinese urbanization has to face. To develop new plans for foreseeable future urbanization in China, it is critical to understand the evolving history of cities across China. This study maps urban expansion of 60 typical Chinese cities based on large amount of remote sensing data and the labor-intensive image interpretation method, in order to understand the history of urban expansion from the 1970 s to 2013.Results showed that area of cities expanded 5.23 times compared to their area in the 1970 s. Urban expansion in China accelerated three times(1988–1996, 1999–2006, and 2009–2011) and decelerated three times(1997–1998, 2007–2008, and 2012–2013) over the 40 years. The urban area of South China expanded most significantly 9.42 times, while the urban area in Northeast China expanded only 2.37 times. The disparity among different administrative ranks of cities was even greater than(3.81 times) the differences among different regions. Super megacities have been continuously expanding at a fast rate(8.60-fold), and have not shown obvious signs of slowing down. The proportion of cultivated land among the land sources for urban expansion decreased to a small extent in the 1990 s, but cultivated land continues to be the major land source for urban expansion. Effective future urbanization needs controlling the expansion scale of large cities and reasonably developing medium and small cities, as well as balancing regional development. | ZHANG ZengXiang WEN QingKe LIU Fang ZHAO XiaoLi LIU Bin XU JinYong YI Ling HU ShunGuang WANG Xiao ZUO LiJun LI Na LI MinMin SHI LiFeng ZENG Tian JU HongRun | 2016 | Science China Earth Sciences2016，59，10： | 12 |
| 2 | Biomimetic Corrugated Silicon Nanocone Arrays for Self-Cleaning Antireflection Coatings显示文摘Corrugated silicon nanocone(SiNC)arrays have been fabricated on a silicon wafer by two polystyrene-sphere-monolayer-masked etching steps in order to create high-performance antireflective coatings.The reflectance was reduced from above 35%to less than 0.7%in the range 400-1050 nm,and it remained below 0.5%at incidence angles up to 70°at 632.8 nm for both s-and p-polarized light.The fluorinated corrugated SiNC array surface exhibits superhydrophobic properties with a water contact angle of 164°. | Yandong Wang Nan Lu Hongbo Xu Gang Shi Miaojun Xu Xiaowen Lin Haibo Li Wentao Wang Dianpeng Qi Yanqing Lu Lifeng Chi | 2010 | Nano Research2010，3，7： | 8 |
| 3 | Heterogeneous lamellar-edged Fe-Ni(OH)_(2)/Ni_(3)S_(2)nanoarray for efficient and stable seawater oxidation显示文摘Development of efficient non-precious catalysts for seawater electrolysis is of great significance but challenging due to the sluggish kinetics of oxygen evolution reaction(OER)and the impairment of chlorine electrochemistry at anode.Herein,we report a heterostructure of Ni_(3)S_(2)nanoarray with secondary Fe-Ni(OH)_(2)lamellar edges that exposes abundant active sites towards seawater oxidation.The resultant Fe-Ni(OH)_(2)/Ni_(3)S_(2)nanoarray works directly as a free-standing anodic electrode in alkaline artificial seawater.It only requires an overpotential of 269 mV to afford a current density of 10 mA·cm^(-2)and the Tafel slope is as low as 46 m V·dec^(-1).The 27-hour chronopotentiometry operated at high current density of 100 mA·cm^(-2)shows negligible deterioration,suggesting good stability of the Fe-Ni(OH)_(2)/Ni_(3)S_(2)@NF electrode.Faraday efficiency for oxygen evolution is up to〜95%,revealing decent selectivity of the catalyst in saline water.Such desirable catalytic performance could be benefitted from the introduction of Fe activator and the heterostructure that offers massive active and selective sites.The density functional theory(DFT)calculations indicate that the OER has lower theoretical overpotential than Cl_(2) evolution reaction in Fe sites,which is contrary to that of Ni sites.The experimental and theoretical study provides a strong support for the rational design of high-performance Fe-based electrodes for industrial seawater electrolysis. | Baihua Cui Zheng Hu Chang Liu Siliang Liu Fangshuai Chen Shi Hu Jinfeng Zhang Wei Zhou Yida Deng Zhenbo Qin Zhong Wu Yanan Chen Lifeng Cui Wenbin Hu | 2021 | Nano Research2021，14，4： | 7 |
| 4 | Spatial Differences of Coastal Urban Expansion in China from 1970s to 2013显示文摘As the ′economic engines′ of China,coastal cities have developed and expanded considerably since the 1970 s.In this study,information on the urban expansion process of Chinese coastal cities from the 1970 s to 2013 was retrieved.Through the analysis of stage characteristics,spatial expansion modes,influences on land use,centroid shifts,and spatial morphological evolutions,the spatial differences of coastal urban expansion were revealed.Results indicate that 1) the expansion stages of southern coastal cities are more complex than those of northern coastal cities,and the expansion ranges and speeds of the former are far higher than those of the latter;2) the spatial expansion of southern coastal cities mostly adopt a single mode,whereas northern coastal cities mostly adopt a mixed mode;3) significant spatial differences in the occupations of different land sources exist between the south and the north along the coastline;4) the centroid of coastal cities tends to migrate toward the coastline,and the centroid shift distances of southern coastal cities are clearly higher than those of northern coastal cities;and 5) the spatial morphology of southern coastal cities tends to be compact,whereas that of northern coastal cities tends to be loose.Policies have a powerful significance in terms of guiding urban expansion and its spatial differences in coastal cities.Urban expansion in coastal cities will encounter new opportunities and challenges under the guidance of new types of urbanization strategies. | SHI Lifeng LIU Fang ZHANG Zengxiang ZHAO Xiaoli LIU Bin XU Jinyong WEN Qingke YI Ling HU Shunguang | 2015 | Chinese Geographical Science2015，25，4： | 7 |
| 5 | Urban Expansion in China Based on Remote Sensing Technology:A Review显示文摘Urban areas and its evolution are important anthropogenic indicators and human ecological footprints, and play decisive roles in environmental change analysis, global geo-conditional monitoring, and sustainable development. China has the highest rate of urban expansion and has emerged as an urban expansion hotspot worldwide. In this paper, the progress of studies on Chinese urban expansion based on remote sensing technology are summarized and analyzed from the aspects of urban area definition, remotely sensed imagery applied in urban expansion, monitoring methods of urban expansion, and urban expansion applications. Existing issues and future directions of Chinese urban expansion are discussed and proposed. Results indicate that: 1) The fusion of multi-source remotely sensed imagery is imperative to meet the needs of urban expansion with various monitoring terms and frequencies on different scales and dimensions. 2) To guarantee the classification accuracy and efficiency and describe urban expansion and its influences on local land use simultaneously, the combination of visual interpretation and automatic classification is the tendency of future monitoring methods of urban areas. 3) Urban expansion data have become the prerequisite for recognizing the urban development process, excavating its driving forces, simulating and predicting the future development directions, and also is conducive to revealing and explaining urban ecological and environmental issues. 4) In the past decades, Chinese scholars have promoted the application of remote sensing technology in the urban expansion field, with data construction, methods and models developing from the quotation stage to improvement and innovation stage; however, an independent and consistent urban expansion data on the national scale with long-term and high-frequency(such as annual monitoring) monitoring is still lacking. | ZHANG Zengxiang LIU Fang ZHAO Xiaoli WANG Xiao SHI Lifeng XU Jinyong YU Sisi WEN Qingke ZUO Lijun YI Ling HU Shunguang LIU Bin | 2018 | Chinese Geographical Science2018，28，5： | 6 |
| 6 | Mechanically reprogrammable Pancharatnam-Berry metasurface for microwaves显示文摘Metasurfaces have enabled the realization of several optical functionalities over an ultrathin platform,fostering the exciting field of flat optics.Traditional metasurfaces are achieved by arranging a layout of static meta-atoms to imprint a desired operation on the impinging wavefront,but their functionality cannot be altered.Reconfigurability and programmability of metasurfaces are the next important step to broaden their impact,adding customized on-demand functionality in which each meta-atom can be individually reprogrammed.We demonstrate a mechanical metasurface platform with controllable rotation at the meta-atom level,which can implement continuous Pancharatnam–Berry phase control of circularly polarized microwaves.As the proof-of-concept experiments,we demonstrate metalensing,focused vortex beam generation,and holographic imaging in the same metasurface template,exhibiting versatility and superior performance.Such dynamic control of electromagnetic waves using a single,low-cost metasurface paves an avenue towards practical applications,driving the field of reprogrammable intelligent metasurfaces for a variety of applications. | Quan Xu Xiaoqiang Su Xueqian Zhang Lijuan Dong Lifeng Liu Yunlong Shi Qiu Wang Ming Kang Andrea Alù Shuang Zhang Jiaguang Han Weili Zhang | 2022 | Advanced Photonics2022，4，1： | 5 |
| 7 | Extraction of Basic Trends of Urban Expansion in China over Past 40 Years from Satellite Images显示文摘If urban sprawl is to be avoided in China in the next ten years, it is not only crucial to understand the overall history, current status, and future trends of urban expansion there, but also these differences, and this is presently lacking. In this study, remotely sensed images with approximately 30 m spatial resolution were used to quantitatively assess the spatial and temporal patterns of urban expansion of 60 Chinese cities(1973–2013). Urban-expansion-process curves of the cities studied were drawn using annual expansion area as an indicator. Curve similarity analysis generated four basic process modes of urban expansion in China. These included cities that: 1) peaked around 2004 and then decelerated; 2) peaked around 2010 and then decelerated; 3) showed sustained acceleration, and 4) showed continued deceleration. Four basic process modes represented cities under different levels of development stage. Geographic location was found to be the most related characteristic to urban expansion process. Regional development policies at the national level in each region also showed highly temporal consistency with fluctuation characteristics of urban expansion process. Urban characteristic such as population size and administrative level were not found to be significantly related to urban expansion-process modes. Understanding the basic process-mode categories well is extremely important for future regional-balance planning and development of macroeconomic policies. | WEN Qingke ZHANG Zengxiang SHI Lifeng ZHAO Xiaoli LIU Fang XU Jinyong YI Ling LIU Bin WANG Xiao ZUO Lijun HU Shunguang LI Na LI Minmin | 2016 | Chinese Geographical Science2016，26，2： | 4 |
| 8 | City Size Distribution and Its Spatiotemporal Evolution in China显示文摘Based on the National Land Use/Cover Database of China(NLUD-C) in the end of the 1980s(the 1980s,hereafter), 1995, 2000, 2005, and 2010, 665 cities were selected to study the size distribution and its changes of urban lands in China. In this study, the spatiotemporal evolutions of urban land size distribution as well as the influence of administrative-level on these cities were explored by combining urban spatial positions and administrative-levels. Results indicate that: 1) City size distribution using urban lands was more practical and reasonable than using non-agricultural population. 2) In the 1980s, cities with ascending urban land rank were centralized in Eastern China, specially the Changjiang(Yangtze) River Delta, the Zhujiang(Pearl) River Delta, and Beijing-Tianjin-Hebei region. Cities in Central, Western, and Northeast China mainly indicated descending urban land rank. 3) The transfer of national development focus resulted in cities with ascending urban land rank becoming evenly distributed nationwide; however, this trend was slightly centralized around Chengdu, Chongqing, and Wuhan in different periods. 4) During the 1980s to 2010, the proportion of cities with ascending urban land rank in provincial capitals, municipalities, and special administrative regions(high-level cities, hereafter) was consistently higher than those in prefecture- and county-level cities except for 2005–2010. The ranks of the majority of the prefecture- and county-level cities were mainly descending, supported by ascending; the proportion of cities with unchanged rank is small. This study breaks through the bottleneck of traditional research in the area of city size distribution by examining urban land replacing the non-agricultural population. The current study also provides scientific explanation for the healthy and reasonable development of urban land as well as the coordinated development of population urbanization and land urbanization. | SHI Lifeng ZHANG Zengxiang LIU Fang ZHAO Xiaoli WANG Xiao LIU Bin HU Shunguang WEN Qingke ZUO Lijun YI Ling XU Jinyong | 2016 | Chinese Geographical Science2016，26，6： | 4 |
| 9 | Fabrication of 3D biomimetic composite coating with broadband antireflection, superhydrophilicity, and double p-n heterojunctions显示文摘传统的单个材料与二维(2D ) biomimetic 蛾眼睛结构被它的 narrowband antireflection 和单个功能的能力限制。克服这些劣势,我们利用了湿蚀刻,热水的合成为制作结合了化学氧化一三维(3D ) 有第三的材料的 biomimetic 蛾眼睛涂层(polypyrrole nanoparticles, TiO 2 nanorods,和 Si micropyramids,即, PPy/TiO 2/Si-p) 。这涂层把反射率归结为 <4% 在与低水从 200 ~ 2,300 nm 和展出显著 superhydrophilicity 的波长联系 1.8 | Gang Shi Xin Zhang Jianhua Li Haiyan Zhu Ying Li Liping Zhang Caihua Ni Lifeng Chi | 2017 | Nano Research2017，10，7： | 3 |
| 10 | Integration of homogeneous and heterogeneous nucleation growth via 3D alloy framework for stable Na/K metal anode显示文摘Sodium/Potassium(Na/K)metal anodes have been considered as the promising anodes for next-generation Na/K secondary batteries owing to their ultrahigh specific capacity,low redox potential and low cost.However,their practical application is still hampered due to unstable solid electrolyte interphase,infinite volume change,and dendrite growth.Herein,we design a 3D-Na_(3)Bi/3D-K_(3)Bi alloy host which enables the homogeneous and heterogeneous nucleation growth of Na/K metal.The unique structure with periodic alternating of electron and ion conductivity improves the mass transfer kinetics and prevents the volume expansion during cycling.Meanwhile,the sodiophilicity of Na_(3)Bi/potassiophilicity of K_(3)Bi framework can avoid dendritic growth.Cycling lifespans over 700 h with 1 mAh cm^(−2)for 3D-Na_(3)Bi@Na electrode and about 450 h with 1 mAh cm^(−2)for 3D-K_(3)Bi@K electrode are achieved,respectively.3D-Na_(3)Bi@Na||Na_(3)V_(2)(PO_(4))3 full battery shows sustainable cycle performance over 400 cycles.This design provides a simple but effective approach for achieving safety of sodium/potassium metal anodes. | Shufen Ye Lifeng Wang Fanfan Liu Pengcheng Shi Yan Yu | 2021 | eScience2021，1，1： | 3 |
| 11 | A computer aided pulmonary nodule detection system using multiple massivetraining SVMs显示文摘 | Shi Zhenghao Zhao Minghua He Lifeng | 2013 | Applied Mathematics &Information Sciences2013，7，3： | 1 |
| 12 | Structural Basis of SARS-CoV-2 Polymerase Inhibition by Favipiravir显示文摘The outbreak of severe acute respiratory syndrome coronavirus 2(SARSCoV-2)has developed into an unprecedented global pandemic.Nucleoside analogs,such as Remdesivir and Favipiravir,can serve as the firstline broad-spectrum antiviral drugs by targeting the viral polymerases.However,the underlying mechanisms for the antiviral efficacies of these drugs are far from well understood.Here,we reveal that Favipiravir,as a pyrazine derivative,could be incorporated into the viral RNA products by mimicking both adenine and guanine nucleotides.This drug thus inhibits viral replication mainly by inducing mutations in progeny RNAs,different from Remdesivir or other RNA-terminating nucleoside analogs that impair the elongation of RNA products.We further determined the cryo-EM structure of Favipiravir bound to the replicating polymerase complex of SARSCoV-2 in the pre-catalytic state.This structure provides a missing snapshot for visualizing the catalysis dynamics of coronavirus polymerase,and reveals an unexpected base-pairing pattern between Favipiravir and pyrimidine residues that may explain its capacity for mimicking both adenine and guanine nucleotides.These findings shed light on the mechanism of coronavirus polymerase catalysis and provide a rational basis for developing antiviral drugs to combat the SARS-CoV-2 pandemic. | Qi Peng Ruchao Peng Bin Yuan Min Wang Jingru Zhao Lifeng Fu Jianxun Qi Yi Shi | 2021 | The Innovation2021，2，1： | 1 |
| 13 | Manipulating selenium molecular configuration in N/O dual-doped porous carbon for high performance potassium-ion storage显示文摘Potassium-selenium(K-Se)batteries have attracted more and more attention because of their high theoretical specific capacity and natural abundance of K resources.However,dissolution of polyselenides,large volume expansion during cycling and low utilization of Se remain great challenges,leading to poor rate capability and cycle life.Herein,N/O dual-doped carbon nanofibers with interconnected micro/mesopores(MMCFs)are designed as hosts to manipulate Se molecular configuration for advanced flexible K-Se batteries.The micropores play a role in confining small Se molecule(Se_(2–3)),which could inhibit the formation of polyselenides and work as physical barrier to stabilize the cycle performance.While the mesopores can confine long-chain Se(Se_(4–7)),promising sufficient Se loading and contributing to higher discharge voltage of the whole Se@MMCFs composite.The N/O co-doping and the 3D interpenetrating nanostructure improve electrical conductivity and keep the structure integrity after cycling.The obtained Se_(2–3)/Se_(4–7)@MMCFs electrode exhibits an unprecedented cycle life(395 mA h g^(−1) at 1 A g^(−1) after 2000 cycles)and high specific energy density(400 Wh kg^(−1),nearly twice the specific energy density of the Se_(2–3)@MMCFs).This study offers a rational design for the realization of a high energy density and long cycle life chalcogen cathode for energy storage. | Dongjun Li Lifeng Wang Xiaolong Cheng Yu Yao Yu Jiang Pengcheng Shi Ying Wu Xiaojun Wu Cheng Ma Yan Yua | 2021 | Journal of Energy Chemistry2021，30，11： | 1 |
| 14 | Mesenchymal stem cell therapy for severe COVID-19显示文摘The coronavirus disease 2019(COVID-19),caused by severe acute respiratory syndrome coronavirus 2(SARS-CoV-2),has placed a global public burden on health authorities.Although the virological characteristics and pathogenesis of COVID-19 has been largely clarified,there is currently no specific therapeutic measure.In severe cases,acute SARS-CoV-2 infection leads to immune disorders and damage to both the adaptive and innate immune responses.Having roles in immune regulation and regeneration,mesenchymal stem cells(MSCs)serving as a therapeutic option may regulate the over-activated inflammatory response and promote recovery of lung damage.Since the outbreak of the COVID-19 pandemic,a series of MSC-therapy clinical trials has been conducted.The findings indicate that MSC treatment not only significantly reduces lung damage,but also improves patient recovery with safety and good immune tolerance.Herein,we summarize the recent progress in MSC therapy for COVID-19 and highlight the challenges in the field. | Lei Shi Lifeng Wang Ruonan Xu Chao Zhang Yunbo Xie Kai Liu Tiantian Li Wei Hu Cheng Zhen Fu-Sheng Wang | 2021 | Signal Transduction and Targeted Therapy2021，6，10： | 1 |
| 15 | Houttuynia cordata polysaccharides alleviate ulcerative colitis by restoring intestinal homeostasis显示文摘Houttuynia cordata is traditionally used as phytoantibiotics for treating lung disease in China.Houttuynia cordata polysaccharides(HCPs)have been reported to alleviate influenza virus-induced intestinal and lung immune injury by regulating the gutlung axis.The present study aims to investigate the effects and mechanisms of HCPs on ulcerative colitis(UC).Male C57BL/6 mice were induced by dextran sodium sulfate(DSS)to establish the UC animal model.Our results showed that HCPs significantly reduced the weight loss and the shortening of colon length in colitis mice,and relieved the pathological damage of colon mucosa and inhibited the expression of pro-inflammatory cytokines such as TNF-α,IL-1β,IL-6,etc.It was suggested that HCPs could significantly improve DSS-induced colitis in mice.HCPs directly protected intestinal epithelial cells,ameliorated epithelial barrier dysfunction and cell apoptosis,which was also proved in H2O2 stimulated cell apoptosis model.HCPs inhibited inflammation in the colon,which was related to suppressing the infiltration of macrophages,inhibiting the expression of pro-inflammatory cytokines and proteins(TLR4,NF-κB),and restoring the dysfunction of Th17 and Treg cells.HCPs also restored the alteration of intestinal flora induced by DSS,increased the abundance of Firmicutes and Bacteroides,and reduced the abundance of Proteobacteria.This study confirmed the protective effect of Houttuynia cordata polysaccharide extracted from traditional Chinese medicine on ulcerative colitis,of which the mechanism was closely related to the maintenance of intestinal homeostasis(intestinal barrier,immune cells,and intestinal bacteria). | CEN Lifeng YI Tong HAO Yuanzhen SHI Chenchen SHI Xunlong LU Yan CHEN Daofeng ZHU Haiyan | 2022 | Chinese Journal of Natural Medicines2022，20，12： | 1 |
| 16 | Classification of lying states for the humanoid robot SJTU-HR1显示文摘The humanoid robot SJTU-HR1's concept is introduced and its characteristics tree is given.The basic states for SJTU-HR1 are proposed,including lying,sitting,standing and handstanding,abstracted from the daily exercises of human beings.The GF(generalized function) set theory is exploited to achieve the kinematic characteristics of the interested EEs(end-effectors) of SJTU-HR1 for the lying states.Finally,the results show that the large amounts of states can be described using the abbreviations in a systematic manner.Although we have focused on the application of the GF set theory to humanoid robots,particularly the SJTU-HR1,this methodology can also be applied to quadruped robots and hexapedal robots,especially when the desired tasks are complex. | JiaLun Yang Feng Gao ZhenLin Jin LiFeng Shi | 2009 | Science China(Technological Sciences)2009，52，5： | 1 |
| 17 | The impact of pH and calcium on the uptake of fluoride by tea plants显示文摘 | Jianyun Ruan Lifeng Ma Yuanzhi Shi | 2004 | Annals of Botany2004，93，： | 1 |
| 18 | Efficient CHzNHzPbl3 perovskite solar cells with 2TPA- n-DP hole-transporting layers显示文摘 | Lifeng Zhu Junyan Xiao Jiangjian Shi Junjie Wang Songtao Lv Yuzhuan Xu Yanhong Luo YinXiao Shirong Wang Qingbo Meng Xianggao Li Dongmei Li | 2015 | Nano Research2015，8，4： | 1 |
| 19 | A stabilizing model predictive control for networked control system with data packet dropout显示文摘A constrained model predictive control (MPC) algorithm for networked control system with data packet dropout is proposed in this paper. A buffer is designed to store the predicted control sequence between controller and actuator. It is shown that if the control horizon of MPC is not less than the number of data packets lost continuously, feasibility of MPC at initial time implies asymptotical stability of the closed-loop system. A simulation example illustrates the effectiveness of the proposed approach. | Zhijun LI Dehui SUN Yuntao SHI Lifeng WANG | 2009 | 控制理论与应用(英文版)2009，7，3： | 1 |
| 20 | Fabrication of optical mosaic gratings with phase and attitude adjustments employing latent fringes and a red-wavelength dual beam interferometer显示文摘 | Shi Lei Zeng Lijiang Li Lifeng | 2009 | Opt Express2009，17，21： | 1 |
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