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| 1 | Earth surface processes and their effects on human behavior in monsoonal China during the Pleistocene-Holocene epochs显示文摘There is a wide diversity of landforms in China.The topography of three major terraces,decreasing in height stepwise from west to east,was formed by the early Miocene.With the commencement of the Great Northern Hemisphere Glaciations(GHGs)and the glacial-interglacial cycles in the Pleistocene,thick loess deposits accumulated in north China,and fluvial terraces were formed and lakes expanded and contracted in eastern and central China.The earliest evidence of hominins in China is dated to ~1.7 Ma;they occupied the monsoon-dominated region for a long interval,until the late Pleistocene,~50 ka.In this study,we investigated a large area rich in the relics and artifacts of early man.The results indicate that the early humans occupied riverine areas,especially medium-sized fluvial basins,and lake shores.Even in the relatively recent geological past,the occupation and abandonment of settlements were directly forced by the shifting of sand dune fields in the desert-loess transitional zone,which in turn was closely associated with variations in the monsoon climate and vegetation patterns.Our observations indicate that landforms were one of the main determinants of early human behavior,in that loess tableland,large alluvial plains,desert-Gobi areas,and the Tibetan Plateau,were not suitable environments for early human settlement.We infer that the early humans in China adapted their behavior to specific landforms and landform processes.The monsoon climate,which shapes the large-scale step-like pattern of fluvial landforms,promotes vegetation coverage and dominates soil formation,provides a crucial context for early human adaptation.The adaptation of early humans to earth surface processes in East Asia is investigated for the first time in this study.Future investigations will provide further information that will increase our understanding of the linkage between early human behavior and landform processes in East Asia. | LU Huayu ZHUO Haixin ZHANG Wenchao WANG Shejiang ZHANG Hongyan SUN Xuefeng JIA Xin XU Zhiwei WANG Xianyan | 2017 | Journal of Geographical Sciences2017，27，11： | 12 |
| 2 | A direct position determination method with combined TDOA and FDOA based on particle filter显示文摘The localization of a stationary transmitter using moving receivers is considered.The original Direct Position Determination(DPD) methods, with combined Time Difference of Arrival(TDOA) and Frequency Difference of Arrival(FDOA), do not perform well under low Signal-toNoise Ratio(SNR), and worse still, the computation cost is difficult to accept when the computational capabilities are limited.To get better positioning performance, we present a new DPD algorithm that proves to be more computationally efficient and more precise for weak signals than the conventional approach.The algorithm partitions the signal received with the same receiver into multiple non-overlapping short-time signal segments, and then uses the TDOA, the FDOA and the coherency among the short-time signals to locate the target.The fast maximum likelihood estimation, one iterative method based on particle filter, is designed to solve the problem of high computation load.A secondary but important result is a derivation of closed-form expressions of the Cramer-Rao Lower Bound(CRLB).The simulation results show that the algorithm proposed in this paper outperforms the traditional DPD algorithms with more accurate results and higher computational efficiency, and especially at low SNR, it is more close to the CRLB. | Zhiyu LU Bin BA Jianhui WANG Wenchao LI Daming WANG | 2018 | Chinese Journal of Aeronautics2018，31，1： | 11 |
| 3 | An integrated quantum secure communication system显示文摘In this paper, we investigate experimentally an integrated quantum secure communication system using weak coherent state. Two modules are involved in the presented system. One is used for generating the secret key which is obtained using continuous variable quantum key distribution scheme, and the other serves to encrypt and decrypt the real-time private data using a pure quantum cryptographic algorithm. The sifted key rate with reverse reconciliation is 8.6 and 3.9 kb/s in the quantum key distribution scheme under the individual attack and the collective attack, respectively. The system uses an all-fiber dual unbalance beam Mach-Zehnder interferometer, and is implemented with a 500 kb/s modulation rate over 27.2 km of optical fiber. | DAI WenChao LU Yuan ZHU Jun ZENG GuiHua | 2011 | Science China(Information Sciences)2011，54，12： | 11 |
| 4 | Personalized Privacy-Preserving Trajectory Data Publishing显示文摘Due to the popularity of mobile internet and location-aware devices,there is an explosion of location and tra jectory data of moving objects.A few proposals have been proposed for privacy preserving tra jectory data publishing,and most of them assume the attacks with the same adversarial background knowledge.In practice,different users have different privacy requirements.Such non-personalized privacy assumption does not meet the personalized privacy requirements,meanwhile,it looses the chance to achieve better utility by taking advantage of differences of users' privacy requirements.We study the personalized tra jectory k-anonymity criterion for trajectory data publication.Specifically,we explore and propose an overall framework which provides privacy preserving services based on users' personal privacy requests,including tra jectory clustering,editing and publication.We demonstrate the efficiency and effectiveness of our scheme through experiments on real world dataset. | LU Qiwei WANG Caimei XIONG Yan XIA Huihua HUANG Wenchao GONG Xudong | 2017 | Chinese Journal of Electronics2017，26，2： | 6 |
| 5 | Relationship between surface pollen assemblages and vegetation in Luonan Basin, Eastern Qinling Mountains, Central China显示文摘在华中的南方 Luohe 河的集水是为因为它位于在南方和北方中国之间的过渡地区,调查现代花粉环境关系的一个重要区域,对气候敏感的环境变化。在这研究,在十种植被类型下面的 40 件表面样品是镇定的揭示在花粉集合和植被之间的关系。结果证明表面花粉集合反映植被相当好。在森林表层土,树木的花粉内容的一般水准比 40% 大,并且 Selaginella sinensis 孢子高。至于稀少的森林草地和灌木社区,平均树木的花粉分别地是 13.2% 和 16.6% ,并且灌木花粉比草地样品的相对高。草地和农田被树和灌木花粉的低百分比描绘(<10% 并且 <1%) ,并且植物的高百分比(>80%) 。因为他们的疏开能力, Pinus, Quercus 和某另外的树木的花粉能显示地区性的植被。Quercus 花粉是在代表下面那么是 Pinus。Artemisia 花粉是显著地过去代表的,与植物范围有差的关联,并且可以思考人的骚乱。Gramineae 能显示植物相当好,但是与低表示一起。Chenopodiaceae 的高内容可能建议人的影响。占优势的 Selaginella sinensis 能被用作森林环境的指示物。簇分析和花粉集合的主要部件分析能区分森林和非森林植被很好。以前的方法擅长分开松并且混合森林,当后者是更稳定的并且能更好区分农田和另外的非森林区域时。PCA 的第一轴主要反映湿度。 | ZHANG Wenchao LI Chunhai LU Huayu TIAN Xianhua ZHANG Hongyan LEI Fang TANG Lingyu | 2014 | Journal of Geographical Sciences2014，24，3： | 6 |
| 6 | A Trusted Ad Hoc Routing Protocol Based on Fuzzy Mathematics显示文摘 | GONG Xudong XIONG Yan LU Qiwei MIAO Puyou HUANG Wenchao | 2013 | Chinese Journal of Electronics2013，22，1： | 5 |
| 7 | Structuring Nonlinear Wavefront Emitted from Monolayer Transition-Metal Dichalcogenides显示文摘The growing demand for tailored nonlinearity calls for a structure with unusual phase discontinuity that allows the realization of nonlinear optical chirality,holographic imaging,and nonlinear wavefront control.Transition-metal dichalcogenide(TMDC)monolayers offer giant optical nonlinearity within a few-angstrom thickness,but limitations in optical absorption and domain size impose restriction on wavefront control of nonlinear emissions using classical light sources.In contrast,noble metal-based plasmonic nanosieves support giant field enhancements and precise nonlinear phase control,with hundred-nanometer pixellevel resolution;however,they suffer from intrinsically weak nonlinear susceptibility.Here,we report a multifunctional nonlinear interface by integrating TMDC monolayers with plasmonic nanosieves,yielding drastically different nonlinear functionalities that cannot be accessed by either constituent.Such a hybrid nonlinear interface allows second-harmonic(SH)orbital angular momentum(OAM)generation,beam steering,versatile polarization control,and holograms,with an effective SH nonlinearityχ^((2))of~25 nm/V.This designer platform synergizes the TMDC monolayer and plasmonic nanosieves to empower tunable geometric phases and large field enhancement,paving the way toward multifunctional and ultracompact nonlinear optical devices. | Xuanmiao Hong Guangwei Hu Wenchao Zhao Kai Wang Shang Sun Rui Zhu Jing Wu Weiwei Liu Kian Ping Loh Andrew Thye Shen Wee Bing Wang Andrea Alù Cheng-Wei Qiu Peixiang Lu | 2020 | Research2020，，1： | 5 |
| 8 | Enhanced reductive degradation of carbon tetrachloride by carbon dioxide radical anion-based sodium percarbonate/ Fe(ll)/formic acid system in aqueous solution显示文摘 | Wenchao Jiang Ping Tang Shuguang Lu Xiang Zhang Zhaofu Qiu Qian Sui | 2018 | Frontiers of Environmental Science & Engineering2018，12，2： | 3 |
| 9 | Stable perovskite solar cells with efficiency of 22.6%via quinoxaline-based polymeric hole transport material显示文摘Poor stability of spiro-OMe TAD hole transport materials(HTMs)with dopant is a major obstacle for the commercialization of perovskite solar cells(pero-SCs).Herein,we demonstrate a series of quinoxaline-based D-A copolymers PBQ5,PBQ6 and PBQ10 as the dopant-free polymer HTMs for high performance pero-SCs.The D-A copolymers are composed of fluorothienyl benzodithiophene(BDTT)as D-unit,difluoroquinoxaline(DFQ)with different side chains as A-unit,and thiophene asπ-bridge,where the side chains on the DFQ unit are bi-alkyl for PBQ5,bi-alkyl-fluorothienyl for PBQ6,and alkoxyl for PBQ10.All the three copolymers are adopted as the dopant-free HTM in the pero-SCs.The planar n-i-p structured pero-SCs based on(FAPb I_(3))_(0.98)(MAPb Br_(3))_(0.02)with PBQ6 HTM demonstrated the high power conversion efficiency(PCE)of 22.6%with Vocof1.13 V and FF of 80.8%,which is benefitted from the suitable energy level and high hole mobility of PBQ6.The PCE of 22.6%is the highest efficiency reported in the n-i-p structured pero-SCs based on dopant-free D-A copolymer HTM.In addition,the peroSCs show significantly enhanced ambient,thermal and light-soaking stability compared with the devices with traditional spiroOMe TAD HTM. | Chenxing Lu Can Zhu Lei Meng Chenkai Sun Wenbin Lai Shucheng Qin Jinyuan Zhang Wenchao Huang Jiaqi Du Yiyang Wang Yongfang Li | 2021 | Science China Chemistry2021，64，11： | 2 |
| 10 | Ionization waves in nanosecond pulsed atmospheric pressure plasma jets in argon显示文摘Typical ionization waves(IWs)are observed during the propagation of nanosecond pulsed atmospheric pressure plasma jets(APPJs)with argon flow,combining both the measurement of the axial electric field(Ez)and the temporal resolved optical imaging.The movement of the luminous APPJ head is recognized as the development of the IW front,accompanied with the propagation of the peak electric field.Especially,the radial distribution of Ez transits from a central peak profile before the IW front arrives to a hollow profile after the pass of the IW front.As for the temporal Ez trend,there is a mode transition from the single-peak feature under a low peak voltage to the double-peak feature under a higher peak voltage,indicating the existence of both primary and secondary IWs.The effect of target conditions on the IWs in APPJs is also explored.With a metal target,no residual electric field is observed before imposing the high-voltage pulses.However,with a dielectric target,the residual surface charges generate a back-ground electric field in the opposite direction to that during IW propagation.In the free APPJ(with no target),on the voltage falling edge,a negative electric field drives the electron flow to compensate the positive ions left over during the forward IW propa-gation on the voltage rising edge. | Bangdou Huang Cheng Zhang Wenchao Zhu Xinpei Lu Tao Shao | 2021 | High Voltage2021，6，4： | 1 |
| 11 | Effects of Ti-bearing inclusions on the microstructure and mechanical properties of MAG multilayer weld metal显示文摘The metal active gas (MAG) multilayer weld metal consists of the columnar grain zone (CGZ) and the fine grain zone (FGZ). Mechanical properties and microstructure of the CGZ and FGZ have been analyzed and evaluated. The inclusion with a size of 0.2-1.0 μm is typical log-normal distribution. The morphology of inclusions has been analyzed using transmission electron microscope (TEM). With the microalloying element Ti addition, much MnTiO3 phase precipitates on the Mn-silicates matrix, which is beneficial for the nucleation of acicular ferrite (AF). The probable mechanism for the nucleation of AF has been discussed. | Xin WANG Wenchao DONG Shanping LU Guangzhong HE Xu ZHAO Dianmai ZHOU Yiyi LI | 2012 | Acta Metallurgica Sinica(English Letters)2012，25，1： | 1 |
| 12 | Non-permanent Pole-to-pole Fault Restoration Strategy for Flexible DC Distribution Network显示文摘As the structures of multiple branch lines(MBLs)will be widely applied in the future flexible DC distribution network,there is a urgent need for improving system reliability by tackling the frequent non-permanent pole-to-pole(P-P)fault on distribution lines.A novel fault restoration strategy based on local information is proposed to solve this issue.The strategy firstly splits a double-ended power supply network into two single-ended power supply networks through the timing difference characteristics of a hybrid direct current circuit breaker(HDCCB)entering the recloser.Then,a method based on the characteristic of the transient energy of fault current is proposed to screen the faulty branch line in each single-ended power supply network.Also,a four-terminal flexible DC distribution network with MBLs is constructed on PSCAD to demonstrate the efficacy of the proposed strategy.Various factors such as noise,fault location,and DC arc equivalent resistance are considered in the simulation model for testing.Test results prove that the proposed strategy for fault restoration is effective,and features high performance and scalability. | Zainan Li Jiandong Duan Wenchao Lu Xiaotong Du Wei Yang Siyu Tu | 2021 | Journal of Modern Power Systems and Clean Energy2021，9，6： | 1 |
| 13 | MicroRNA‐191, by promoting the EMT and increasing CSC‐like properties, is involved in neoplastic and metastatic properties of transformed human bronchial epithelial cells显示文摘 | Wenchao Xu Jie Ji Yuan Xu Yawei Liu Le Shi Yi Liu Xiaolin Lu Yue Zhao Fei Luo Bairu Wang Rongrong Jiang Jianping Zhang Qizhan Liu | 2015 | Carcinog2015，，1： | 1 |
| 14 | A resorbable bicomponent braided ureteral stent with improved mechanical performance 显示文摘 | ZOU Ting WANG Lu LI Wenchao | 2014 | J Mech Behav Biomed Mater2014，38，38： | 1 |
| 15 | Isolation and Phenotypic Characterization of Colorectal Cancer Stem Cells With Organ-Specific Metastatic Potential显示文摘 | Wenchao Gao Lu Chen Zhenyu Ma Zunguo Du Zhonghua Zhao Zhiqian Hu Qingquan Li | 2013 | Gastroenterology2013，，3： | 1 |
| 16 | Photocatalytic activity of La, Y Co-doped TiO2 nanoparticles synthesized by ultrasonic as- sisted sol-gel method 显示文摘 | GAO Hongtao LIU Wenchao LU Bing | 2012 | J Nanosci Nanotechenol2012，12，5： | 1 |
| 17 | A Secure Adaptive Routing Strategy Using Immune Mechanism in MANET显示文摘 | HU Yiqing XIONG Yah LU Qiwei GONG Xudong HUANG Wenchao | 2013 | Chinese Journal of Electronics2013，22，4： | 1 |
| 18 | EpCAM Is an Endoderm-Specific Wnt Derepressor that Licenses Hepatic Development显示文摘 | Huiqiang Lu Jun Ma Yun Yang Wenchao Shi Lingfei Luo | 2013 | Developmental Cell2013，，5： | 1 |
| 19 | Investigation of the 12 orientations variants of nanoscale Al precipitates in eutectic Si of Al-7Si-0.6Mg alloy显示文摘Various orientations and diffraction patterns from nanoscale Al precipitates in eutectic Si were investigated by high-resolution transmission electron microscopy combined with transition matrix and stereographic projection.It was found that the Al precipitates had 12 variants,all orientation relationships can be expressed as:(001)Al//{111}Si,[110]Al//<110>Si.Further,a new diffraction pattern model from Al precipitates was established under[111]Si zone axis,which was in good agreement with the experiment data.The microstructure,adhesion strength and electronic structure of the interface between Al precipitate and Si matrix were studied by first-principles calculation and experimental observation.The results show that the covalent bonds are formed between interfacial Al and Si atoms,which play a key role in interfacial bind strength.Based on the Griffith fracture theory,the cracks tend to form and expand in the interior of Al precipitates firstly,and the interfaces can act as a protective layer to prevent crack propagation.Therefore,the nanoscale Al precipitates will improve the toughness of eutectic Si particles by releasing part of stress through lattice distortion.In addition,the stretched nanoscale Al precipitates can act as effective heterogeneous nucleation sites for high density deformation nanotwins in eutectic Si during deformation,which significantly improved the deformability of eutectic Si. | Yifan Wang Yanli Lu Jing Zhang Wenchao Yang Changlin Yang Pan Wang Xiaoqing Song Zheng Chen | 2021 | Journal of Materials Science & Technology2021，，8： | 1 |
| 20 | Lighting up plants with near-infrared fluorescence probes显示文摘Fluorescence imaging is a non-invasive and highly sensitive bioimaging technique that has shown remarkable strides in plant science. It enables real-time monitoring and analysis of biological and pathological processes in plants by labeling specific molecular or cellular structures with fluorescent probes. However, tissue scattering and phytochrome interference have been obstacles for conventional fluorescence imaging of plants in the ultraviolet and visible spectrum, resulting in unsatisfactory imaging quality. Fortunately, advances in near-infrared(NIR) fluorescence imaging technology(650-900 nm) offer superior spatial-temporal resolution and reduced tissue scattering, which is sure to improve plant imaging quality. In this review, we summarize recent progress in the development of NIR fluorescence imaging probes and their applications for in vivo plant imaging and the identification of plant-related biomolecules. We hope this review provides a new perspective for plant science research and highlights NIR fluorescence imaging as a powerful tool for analyzing plant physiology, adaptive mechanisms, and coping with environmental stress in the near future. | Yida Pang Mengjiao Lu Hyeonji Rha Wenchao Yang Amit Sharma Yao Sun Jong Seung Kim | 2024 | Science China Chemistry2024，67，3： | 0 |
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