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37篇 您的检索式:作者名="LI Weiran"
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1Encapsulating segment-like antimony nanorod in hollow carbon tube as long-lifespan,high-rate anodes for rechargeable K-ion batteries显示文摘K-ion battery (KIB) is a new-type energy storage device that possesses potential advantages of low-cost and abundant resource of potassium.To develop advanced electrode materials for accommodating the large size and high activity of potassium ion is of great interests.Herein,a segment-like antimony (Sb) nanorod encapsulated in hollow carbon tube electrode material (Sb@HCT) was prepared.Beneficial from the virtue of abundant nitrogen doping in carbon tube,one-dimensional and hollow structure advantages,Sb@HCT exhibits excellent potassium storage properties:in the case of potassium bis(fluorosulfonyl)imide (KFSI) electrolyte,Sb@HCT displays a reversible capacity of up to 453.4 mAh·g^-1 at a current density of 0.5 A·g^-1 and good rate performance (a capacity of 211.5 mAh·g^-1 could be achieved at an ultrahigh rate of 5 A·g^-1).Additionally,Sb@HCT demonstrates excellent long-cycle stability at a current density of 2 A·g^-1 over 120 cycles.Meanwhile,electrolyte optimization is an effective strategy for greatly improving electrochemical performance.Through ex-situ characterizations,we disclosed the potassiation of Sb anode is quite reversible and undergoes multistep processes,combining solid solution reaction and two-phase reaction.Wen Luo Feng Li Weiran Zhang Kang Han Jean-Jacques Gaumet Hans-Eckhardt Schaefer Liqiang Mai 2019Nano Research2019,12,5:18
2Kinetic study of the gas-phase reaction of O3 with three unsaturated alcohols显示文摘Rate constants for the reactions of ozone with 1-octen-3-ol, 1-nonen-3-ol and 1-nonen-4-ol have been determined at 298 ± 1 K and atmospheric pressure for the first time. The experiments were performed in a 100-L FEP Teflon film bag using absolute rate method; the rate constants were(1.91 ± 0.19) × 10^(-17),(1.89 ± 0.20) × 10^(-17), and(0.83 ± 0.08) × 10^(-17)cm^3/(molecule·sec) for 1-octen-3-ol, 1-nonen-3-ol, and 1-nonen-4-ol, respectively. The rate constants have been compared with those of unsaturated alcohols structural homologs, and used to estimate the reaction reactivity. The electronegativity of carbon–carbon double bond was calculated by atomic charges analysis. The calculated results show that the electronic effect of the lone pair electrons of hydroxyl oxygen is the main cause of the difference in rate coefficient. According to the obtained rate constants, the atmospheric lifetimes of studied unsaturated alcohols were also estimated, which indicates that the reaction with ozone is an important loss pathway in the atmosphere, especially in polluted areas.Weiran Li Yi Chen Shengrui Tong Yucong Guo Yunhong Zhang Maofa Ge 2018Journal of Environmental Sciences2018,30,9:4
3Chronological Link Between the Abrupt Change of the Loess Grain Size Sequence and the Formation of River Terraces on the Eastern Margin of the Qinghai-Tibetan Plateau Since the Late Early-Pleistocene显示文摘基于 magnetostratigraphy,磁性的危险性和 GarzLIU Dongyan QIAO Yansong LI Weiran XIE Ruihuang PENG Shasha 2011Acta Geologica Sinica(English Edition)2011,85,3:4
4Beach Morphology and Coastline Evolution in the Southern Bohai Strait显示文摘The beach studied in this paper spans a length of 51 km and is one of several long sandy beaches in the southern Bohai Strait. Due to the obstruction of islands in the northeast and the influence of the underwater topography, the wave environment in the offshore area is complex; beach types and sediment transport characteristics vary along different coasts. The coastlines extracted from six aerial photographs in different years were compared to demonstrate the evolving features. Seven typical beach profiles were selected to study the lateral beach variation characteristics. Continuous wind and wave observation data from Beihuangcheng ocean station during 2009 were employed for the hindcast of the local wave environment using a regional spectral wave model. Then the results of the wave hindcast were incorporated into the LITDRIFT model to compute the sediment transport rates and directions along the coasts and analyze the longshore sand movement. The results show that the coastline evolution of sand beaches in the southern Bohai Strait has spatial and temporal variations and the coast can be divided into four typical regions. Region(I), the north coast of Qimudao, is a slightly eroded and dissipative beach with a large sediment transport rate; Region(II), the southwest coast of Gangluan Port, is a slightly deposited and dissipative beach with moderate sediment transport rate; Region(III), in the central area, is a beach that is gradually transformed from a slightly eroded dissipative beach to a moderately or slightly strong eroded bar-trough beach from west to east with a relatively moderate sediment transport rate. Region(IV), on the east coast, is a strongly eroded and reflective beach with a weak sediment transport rate. The wave conditions exhibit an increasing trend from west to east in the offshore area. The distribution of the wave-induced current inside the wave breaking region and the littoral sediment transport in the nearshore region exhibit a gradual weakening tendency from west to east, which is opposite to the trend of the wave conditions outside the breaking region. The presence of submerged shoal(Dengzhou Shoal), deep trough(Dengzhou Channel), islands and irregular topography influnces the wave climate, beach types, wave-induced current features, littoral sediment transport trends and coastline evolution patterns in the southern Bohai Strait. Human activities, such as the sand exploitation of Dengzhou Shoal and other coastal engineering projects, also influence the beach morphology and coastline evolution.ZHANG Wei WU Jianzheng LI Weiran ZHU Longhai HU Rijun JIANG shenghui SUN Yonggen WANG Huijuan 2015Journal of Ocean University of China2015,14,5:3
5Tectonic Evolution of the North Depression of the South Yellow Sea Basin Since Late Cretaceous显示文摘On the basis of subsidence history analysis and balanced cross-section analysis, the vertical uplift/subsidence history and horizontal extension/compression history of the north depression of the south Yellow Sea basin are quantitatively studied. The results show that the tectonic evolution of the north depression of the south Yellow Sea basin since late Cretaceous can be divided into a rifting phase(late Cretaceous to Paleogene) and a post-rifting phase(Neogene to Quaternary). The rifting phase can be further subdivided into an initial rifting stage(late Cretaceous), an intensive rifting stage(Paleocene), a rifting termination stage(Eocene), and an inversion-uplifting stage(Oligocene). Together, this division shows the characteristics of an episodic-evolved intracontinental rift-depression basin. The deformation of the north depression of the south Yellow Sea basin since late Cretaceous was mainly fault-related. The horizontal extension and tectonic subsidence were controlled by the activity of faults. The differential evolution of faults also caused variations in local uplift/subsidence movements and the regional heterogeneity in extension. The late Cretaceous initial rifting of the north depression of the south Yellow Sea basin is related to the Pacific-Eurasia convergence. From the Paleocene intensive rifting stage to present, the Pacific-Eurasia convergence and India-Eurasia convergence have played important roles in the evolution of this region.LI Nan LI Weiran LONG Haiyan 2016Journal of Ocean University of China2016,15,6:3
6CRISPR/Cas systems for the detection of nucleic acid and nonnucleic acid targets显示文摘Clustered regularly interspaced short palindromic repeats(CRISPR)/CRISPR-associated(Cas)systems are becoming powerful tools for disease biomarkers detection.Due to the specific recognition,cis-cleavage and nonspecific trans-cleavage capabilities,CRISPR/Cas systems have implemented the detection of nucleic acid targets(DNA and RNA)as well as non-nucleic acid targets(e.g.,proteins,exosomes,cells,and small molecules).In this review,we first summarize the principles and characteristics of various CRISPR/Cas systems,including CRISPR/Cas9,Cas12,Cas13 and Cas14 systems.Then,various types of applications of CRISPR/Cas systems used in detecting nucleic and non-nucleic acid targets are introduced emphatically.Finally,the prospects and challenges of their applications in biosensing are discussed.Weiran Su Junru Li Chen Ji Congshuo Chen Yuzheng Wang Huili Dai Fengqin Li Peifeng Liu 2023Nano Research2023,16,7:3
7DNA methylation profile is associated with the osteogenic potential of three distinct human odontogenic stem cells显示文摘Among the various sources of human autologous stem cells,stem cells isolated from dental tissues exhibit excellent properties in tissue engineering and regenerative medicine.However,the distinct potential of these odontogenic cell lines remains unclear.In this study,we analyzed DNA methylation patterns to determine whether specific differences existed among three different odontogenic cell types.Using the HumanMethylation450 Beadchip,the whole genomes of human dental pulp stem cells(DPSCs),periodontal ligament stem cells(PDLSCs),and dental follicle progenitor cells(DFPCs)were compared.Then,the osteogenic potential of these cells was evaluated both in vitro and in vivo,and the methylation levels of certain genes related to bone formation differed among the three cell lines.P values less than 0.05 were considered to indicate statistical significance.The three cell types showed highly similar DNA methylation patterns,although specific differences were identified.Gene ontology analysis revealed that one of the most significantly different gene categories was related to bone formation.Thus,expression of cell surface epitopes and osteogenic-related transcription factors as well as the bone formation capacity were compared.The results showed that compared with DFPCs and DPSCs,PDLSCs had higher transcription levels of osteogenic-related factors,a higher in vitro osteogenic potential,and an increased new bone formation capacity in vivo.In conclusion,the results of this study suggested that the differential DNA methylation profiles could be related to the osteogenic potential of these human odontogenic cell populations.Additionally,the increased osteogenic potential of PDLSCs might aid researchers or clinicians in making better choices regarding tissue regeneration and clinical therapies.Tingting Ai Jieni Zhang Xuedong Wang Xiaowen Zheng Xueyan Qin Qian Zhang Weiran Li Wei Hu Jiuxiang Lin Feng Chen 2018Signal Transduction and Targeted Therapy2018,3,1:3
8The gap report of global climate change mitigation, finance, and governance after the United States declared its withdrawal from the Paris Agreement显示文摘On 1 June 2017, the US President Donald Trump officially announced the withdrawal from the Paris Agreement, thus the study on the reasons of withdrawal, the potential impacts, and coping strategies has become a focus among policy circles and of the international community. Based on the self-developed US Policy Assessment Model, this paper systematically evaluates the three potential 'major deficits' in terms of mitigation, climate finance, and global climate governance, as a result of the US withdrawal from the Paris Agreement and puts forward policy suggestions for coping with such transformations accordingly. The study shows that the United States 'withdrawal from the Paris Agreement will affect the existence and implementation of successive climate policies and result in an additional 8.8-13.4% increase in the global emissions reduction deficit.The United States' withdrawal will also deteriorate the existing climate finance mechanism. The Green Climate Fund(GCF)'s funding gap will increase by US$2 billion, while the gap of long-term climate finance will increase by about US$5 billion a year. Either the China-EU or the 'BASIC plus' mechanism could fill the governance deficit caused by the United States and the lack of political momentum may continue for a while in the future.Qimin Chai Sha Fu Huaqing Xu Weiran Li Yan Zhong 2017Chinese Journal of Population,Resources and Environment2017,15,3:3
9The study on three-dimensional numerical model and fronts of the Jiulong Estuary and the Xiamen Bay显示文摘Applying the methods of on-site observation and dynamic model, the research on the fronts at the Jiulong Estuary has been carried out, during which spatial and temporal distribution, dynamic characteristics and formation mechanism of salinity fronts are analyzed and discussed. The research shows that the estuarine fronts mainly lie in the area from the Jiyu Islet to the Haimen Island, outside of Yuweizai to Hulishan cross-section, the near coast of Yuweizai and the south of the Songyu-Gulangyu Channel. The fronts in the former two regions are formed directly by plume, while the one near the coast of Yuweizai is a tidal intrusion front caused by flood current and the one at the south of the Songyu-Gulangyu Channel is the result of current shear transformation. Under normal circumstances, fresh water of the Jiulong River mainly influences the inside of the Xiamen Bay, and when it is in typhoon seasons, plume front can affect the Taiwan Strait and has an effect on the biogeochemical processes in the strait.LUO Zhibin PAN Weiran LI Li ZHANG Guorong 2012Acta Oceanologica Sinica2012,31,4:3
10TEM and HRTEM Study of Microstructures in Omphacite from UHP Eclogites at Shima,Dabie Mountains,China显示文摘Transmission electron microscope (TEM) and high resolution transmission electron microscope (HRTEM) analyses have been performed on omphacite from ultra-high pressure (UHP) eclogites at the locality of Shima, Dabie Mountains, China. TEM reveals that the microstructures consist dominantly of dislocation substructures, including free dislocations, loops, tiltwalls, dislocation tangles and subboundaries. They were produced by high-temperature ductile deformation, of which the main mechanism was dislocation creep. Antiphase domain (APD) boundaries are common planar defects; an age of 470±6 Ma for UHP eclogite formation has been obtained from the equiaxial size of APDs in ordered omphacites from Shima, coincident with ages given by single-zircon U-Pb dating (471±2 Ma). HRTEM reveals C2/c and P2ln space groups in different parts of one single omphacite crystal, and no exsolution is observed in the studied samples, which is attributed to rapid cooling. It is suggested that the UHP eclogites underwent aWU Xiuling HAN Yujing MENG Dawei YANG Weiran LI Douxing 2000Acta Geologica Sinica(English Edition)2000,74,2:2
11Personality Openness Predicts Driver Trust in Automated Driving显示文摘Maintaining an appropriate level of trust in automated driving(AD)is critical to safe driving.However,few studies have explored factors affecting trust in AD in general,and no study,as far as is known,has directly investigated whether driver personality influences driver trust in an AD system.The current study investigates the relation between driver personality and driver trust in AD,focusing on Level 2 AD.Participants were required to perform a period of AD in a driving simulator,during which their gaze and driving behavior were recorded,as well as their subjective trust scores after driving.In three distinct measures,a significant correlation between Openness and driver trust in the AD system is found:participants with higher Openness traits tend to have less trust in the AD system.No significant correlations between driver trust in AD and other personality traits are found.The findings suggest that driver personality has an impact on driver trust in AD.Theoretical and practical implications of this finding are discussed.Wenmin Li Nailang Yao Yanwei Shi Weiran Nie Yuhai Zhang Xiangrong Li Jiawen Liang Fang Chen Zaifeng Gao 2020Automotive Innovation2020,3,1:2
12Atmospheric oxidizing capacity in autumn Beijing:Analysis of the O_(3) and PM_(2.5) episodes based on observation-based model显示文摘Atmospheric oxidizing capacity(AOC)is the fundamental driving factors of chemistry process(e.g.,the formation of ozone(O_(3))and secondary organic aerosols(SOA))in the troposphere.However,accurate quantification of AOC still remains uncertainty.In this study,a comprehensive field campaign was conducted during autumn 2019 in downtown of Beijing,where O_(3) and PM_(2.5) episodes had been experienced successively.The observation-based model(OBM)is used to quantify the AOC at O_(3) and PM_(2.5) episodes.The strong intensity of AOC is found at O_(3) and PM2.5 episodes,and hydroxyl radical(OH)is the dominating daytime oxidant for both episodes.The photolysis of O_(3) is main source of OH at O_(3) episode;the photolysis of nitrous acid(HONO)and formaldehyde(HCHO)plays important role in OH formation at PM_(2.5) episode.The radicals loss routines vary according to precursor pollutants,resulting in different types of air pollution.O_(3) budgets and sensitivity analysis indicates that O_(3) production is transition regime(both VOC and NOx-limited)at O3 episode.The heterogeneous reaction of hydroperoxy radicals(HO_(2))on aerosol surfaces has significant influence on OH and O_(3) production rates.The HO_(2) uptake coefficient(γHO_(2))is the determining factor and required accurate measurement in real atmospheric environment.Our findings could provide the important bases for coordinated control of PM_(2.5) and O_(3) pollution.Chenhui Jia Shengrui Tong Xinran Zhang Fangjie Li Wenqian Zhang Weiran Li ZhenWang Gen Zhang Guiqian Tang Zirui Liu Maofa Ge 2023Journal of Environmental Sciences2023,,2:2
13Exosomes derived from osteoclasts under compression stress inhibit osteoblast differentiation显示文摘Orthodontic tooth movement is triggered by orthodontic force loading on the periodontal ligament and is achieved by alveolar bone remodeling,which is regulated by intimate crosstalk between osteoclastogenesis and osteoblast differentiation.Whether the communication between osteoclasts and osteoblasts is influenced by orthodontic compression stress requires further clarification.In this study,osteoclasts were differentiated for 10 days.On day 4 of differentiation,the number of pre-osteoclasts peaked,as determined by the increased expression of RANK and the number of multinucleated cells.After 24 h of compression stress loading,on day 4,the number of osteoclasts increased,and the optimal magnitude of stress to promote osteoclastogenesis was determined as 1 g/cm2.Moreover,the results of RNA-sequencing analysis showed that the miRNA expression profile changed markedly after compression loading and that many of the altered miRNAs were associated with cell communication functions.A series of indirect co-culture experiments showed an inhibitory effect of osteoclasts on osteoblast differentiation,especially after compression.Next,we added osteoclast-derived exosomes to hPDLSCs during osteoblast differentiation.Exosomes derived from osteoclasts under compression(cEXO)showed a greater inhibitory effect on osteoblast differentiation,compared to exosomes from osteoclasts without compression(EXO).Therefore,we analyzed differentially expressed miRNAs associated with bone development functions in exosomes:miR-223-5p and miR-181a-5p were downregulated,whereas miR-133a-3p,miR-203a-3p,miR-106a-5p,and miR-331-3p were upregulated;these altered expressions may explain the enhanced inhibitory effect of compression stress.YUE WANG YUNFEI ZHENG WEIRAN LI 2021BIOCELL2021,45,2:2
14A single-molecule multicolor electrochromic device generated through medium engineering显示文摘Multicolor organic electrochromic materials are important for the generation of full-color devices.However,achieving multiple colors using a single-molecule material has proved challenging.In this study,a multicolor electrochromic prototype device is generated by integrating medium engineering/in situ‘electro base’/laminated electrode technologies with the simple flying fish-shaped methyl ketone TM1.This multicolor electrochromic(green,blue and magenta)device is durable and has a high coloration efficiency(350 cm^(2) C^(-1)),a fast switching time(50 ms)and superior reversibility.This study is a successful attempt to integrate solvatochromism and basochromism in an electronic display.This integration not only introduces a new avenue for color tuning,in addition to the structural design of the colorant,but will also inspire further developments in the tuning of many other properties by this medium engineering approach,such as conductance and the redox property,and thereby accelerate versatile applications in data recording,ultrathin flexible displays,and optical communication and sensing.Yu-Mo Zhang Xiaojun Wang Weiran Zhang Wen Li Xiaofeng Fang Bing Yang Minjie Li Sean Xiao-An Zhang 2015Light(Science & Applications)2015,4,1:2
15Enrichment of heavy metals in the inner shelf mud of the East China Sea and its indication to human activity显示文摘Bin Chen Dejiang Fan Weiran Li Liang Wang Xilin Zhang Ming Liu Zhigang Guo 2014Continental Shelf Research2014,,:1
16Preparation of submicron liposomes exhibiting efficient entrapment of drugs by freeze-drying water-in-oil emulsions显示文摘Ting Wang Ning Wang Tongyan Wang Weiran Sun Tiefu Li 2010Chemistry and Physics of Lipids2010,,2:1
17Survey on key security technologies for space information networks显示文摘SIN(Space Information Network)is expected to play an increasing role in providing real-time,flexible,and integrated communication and data transmission services in an efficient manner.Nowadays,SIN has been widely developed for position navigation,environment monitor,traffic management,counter-terrorism,etc.However,security is a major concern in SIN,since the satellites,spacecrafts,and aircrafts are susceptible to a variety of traditional/specific network-based attacks,including eavesdropping,session hijacking,and illegal accessing.The network architecture and security issues of SIN were reviewed.Various security requirements were discussed that should be considered when designing SIN.And existing solutions proposed to meet these requirements were surveyed.The key challenges and key technologies that still require extensive research and development for securing SIN were indentifed.LIU Jianwei LIU Weiran WU Qianhong LI Dawei CHEN Shigang 2016Journal of Communications and Information Networks2016,1,1:1
18Wavefront shaping: A versatile tool to conquer multiple scattering in multidisciplinary fields显示文摘Optical techniques offer a wide variety of applications as light-matter interactions provide extremely sensitive mechanisms to probe or treat target media.Most of these implementations rely on the usage of ballistic or quasi-ballistic photons to achieve high spatial resolution.However,the inherent scattering nature of light in biological tissues or tissue-like scattering media constitutes a critical obstacle that has restricted the penetration depth of non-scattered photons and hence limited the implementation of most optical techniques for wider applications.In addition,the components of an optical system are usually designed and manufactured for a fixed function or performance.Recent advances in wavefront shaping have demonstrated that scattering-or component-induced phase distortions can be compensated by optimizing the wavefront of the input light pattern through iteration or by conjugating the transmission matrix of the scattering medium.Zhipeng Yu Huanhao Li Tianting Zhong Jung-Hoon Park Shengfu Cheng Chi Man Woo Qi Zhao Jing Yao Yingying Zhou Xiazi Huang Weiran Pang Hansol Yoon Yuecheng Shen Honglin Liu Yuanjin Zheng YongKeun Park Lihong V.Wang Puxiang Lai 2022The Innovation2022,3,5:1
19Compression loading of osteoclasts attenuated micro RNA-146a-5p expression,which promotes angiogenesis by targeting adiponectin显示文摘Osteoclastogenesis in alveolar bone induced by compression stress triggers orthodontic tooth movement.Compression stress also stimulates angiogenesis,which is essential for osteoclastogenesis.However,the effects of osteoclastogenesis induced by compression on angiogenesis are poorly understood.In vivo,we found the markers of angiogenesis increased during orthodontic bone remodeling.In vitro,osteoclast-derived exosomes increased proliferation,migration,and tube formation of human umbilical vein endothelial cells(HUVECs),as well as expression of vascular endothelial growth factor and CD31.The promotive effects of exosomes derived from compressed osteoclasts were greater than those derived from osteoclasts without compression.Next,we analyzed changes in the micro RNA transcriptome after compression stress and focused on micro RNA146 a-5 p(mi R-146 a),which was significantly decreased by compression.Transfection of an inhibitor of mi R-146 a stimulated angiogenesis of HUVECs while mi R-146 a mimics repressed angiogenesis.Adiponectin(ADP)was confirmed to be a target of mi R-146 a by dual luciferase reporter assay.In HUVECs treated with exosomes,we detected increased ADP which promoted angiogenesis.Knockdown of ADP in HUVECs reduced the promotive effects of exosomes.Our results demonstrate that the decreased mi R-146 a observed in osteoclasts after compression promotes angiogenesis by targeting ADP,suggesting a novel method to interfere with bone remodeling induced by compression stress.Yue Wang Yunfei Zheng Weiran Li 2022Science China(Life Sciences)2022,65,1:1
20Safety Analysis of Riding at Intersection Entrance Using Video Recognition Technology显示文摘To study riding safety at intersection entrance,video recognition technology is used to build vehicle-bicycle conflict models based on the Bayesian method.It is analyzed the relationship among the width of nonmotorized lanes at the entrance lane of the intersection,the vehicle-bicycle soft isolation form of the entrance lane of intersection,the traffic volume of right-turning motor vehicles and straight-going non-motor vehicles,the speed of right-turning motor vehicles,and straight-going non-motor vehicles,and the conflict between right-turning motor vehicles and straight-going nonmotor vehicles.Due to the traditional statistical methods,to overcome the discreteness of vehicle-bicycle conflict data and the differences of influencing factors,the Bayesian random effect Poisson-log-normal model and random effect negative binomial regression model are established.The results show that the random effect Poisson-log-normal model is better than the negative binomial distribution of random effects;The width of non-motorized lanes,the form of vehicle-bicycle soft isolation,the traffic volume of right-turning motor vehicles,and the coefficients of straight traffic volume obey a normal distribution.Among them,the type of vehicle-bicycle soft isolation facilities and the vehicle-bicycle traffic volumes are significantly positively correlated with the number of vehicle-bicycle conflicts.The width of non-motorized lanes is significantly negatively correlated with the number of vehicle-bicycle conflicts.Peak periods and flat periods,the average speed of right-turning motor vehicles,and the average speed of straight-going non-motor vehicles have no significant influence on the number of vehicle-bicycle conflicts.Xingjian Xue Linjuan Ge Longxin Zeng Weiran Li Rui Song Neal N.Xiong 2022Computers, Materials & Continua2022,,9:1
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