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| 1 | A group of SUVH methyl-DNA binding proteins regulate expression of the DNA demethylase ROS_1 in Arabidopsis显示文摘DNA methylation is typically regarded as a repressive epigenetic marker for gene expression.Genome-wide DNA methylation patterns in plants are dynamically regulated by the opposing activities of DNA methylation and demethylation reactions. In Arabidopsis, a DNA methylation monitoring sequence(MEMS) in the promoter of the DNA demethylase gene ROS_1 functions as a methylstat that senses these opposing activities and regulates genome DNA methylation levels by adjusting ROS_1 expression. How DNA methylation in the MEMS region promotes ROS_1 expression is not known. Here, we show that several Su(var)3-9 homologs(SUVHs) can sense DNA methylation levels at the MEMS region and function redundantly to promote ROS_1 expression. The SUVHs bind to the MEMS region, and the extent of binding is correlated with the methylation level of the MEMS.Mutations in the SUVHs lead to decreased ROS_1 expression, causing DNA hypermethylation at more than 1,000 genomic regions. Thus, the SUVHs function to mediate the activation of gene transcription by DNA methylation. | Xinlong Xiao Jieqiong Zhang Tao Li Xing Fu Viswanathan Satheesh Qingfeng Niu Zhaobo Lang Jian-Kang Zhu Mingguang Lei | 2019 | Journal of Integrative Plant Biology2019，61，2： | 11 |
| 2 | Single W18O49 nanowires: A multifunctional nanoplatform for computed tomography imaging and photothermal/ photodynamic/radiation synergistic cancer therapy显示文摘联合治疗是通常基于复杂 nanostructures 的利用,多重部件为 photothermal 作为相片热的精力变换器, photo-sensitizers,或剂量 intensifiers 工作的有希望的癌症治疗策略治疗(PTT ) ,光力学的治疗(太平洋夏季时间) ,或放射治疗(RT ) 。在这研究, ultrathin 钨氧化物 nanowires (W 18 O 49) 用一条 solvothermal 途径被综合并且作为多功能的 theranostic nanoplatform 检验了。在 vitro 并且在 vivo,分析证明这些 nanowires 能导致广泛的热 -- 并且汗衫在 980 nm 在附近下面的癌症房间的调停氧的损坏红外线(NIR ) 激光刺激。他们也被显示作为加强在放射治疗期间局部地并且有选择地提高放热精力免职的代理人的放射剂量工作。独自比作导致 NIR 的 PTT/PDT 和 RT, W 18 O 49-based synergistic tri 形式的治疗根除了异种皮移植肿瘤和没有复发被观察在以内一 9 月列在后面起来。而且,钨元素的强壮的 X 光检查变细能力(Z = 74, 4.438 厘米 2???? ?? ?? 佦 ? 畳 ?? 猯扵￣?? | Jianjian Qiu Qingfeng Xiao Xiangpeng Zheng Libo Zhang Huaiyong Xing Dalong Ni Yanyan Liu Shengjian Zhang Qingguo Ren Yanqing Hua Kuaile Zhao Wenbo Bu | 2015 | Nano Research2015，8，11： | 5 |
| 3 | Superior performance and high service stability for Ge Te-based thermoelectric compounds显示文摘GeTe-based compounds have been intensively studied recently due to their superior thermoelectric performance,but their real applications are still limited so far due to the drastic volume variation that occurs during the rhombohedral–cubic phase transition,which may break the material or the material/electrode interface during service.Here,superior performance and high service stability for GeTe-based thermoelectric compounds are achieved by co-doping Mg and Sb into GeTe.The linear coefficient of thermal expansion before phase transition is greatly improved to match that after phase transition,yielding smooth volume variation around the phase transition temperature.Likewise,co-doping(Mg,Sb)in GeTe successfully tunes the carrier concentration to the optimal range and effectively suppresses the lattice thermal conductivity.A peak z T of 1.84 at 800 K and an average z T of 1.2 in 300–800 K have been achieved in Ge0.85Mg0.05Sb0.1Te.Finally,a Ni/Ti/Ge0.85Mg0.05Sb0.1Te thermoelectric uni-leg is fabricated and tested,showing quite good service stability even after 450 thermal cycles between 473 K and 800 K.This study will accelerate the application of GeTe-based compounds for power generation in the mid-temperature range. | Tong Xing Qingfeng Song Pengfei Qiu Qihao Zhang Xugui Xia Jincheng Liao Ruiheng Liu Hui Huang Jiong Yang Shengqiang Bai Dudi Ren Xun Shi Lidong Chen | 2019 | National Science Review2019，6，5： | 4 |
| 4 | Climatic significance of n-alkanes and their compound-specific dD values from lake surface sediments on the Southwestern Tibetan Plateau显示文摘The content and hydrogen isotope ratios of n-alkanes extracted from recent lake surface sediments sampled from nine lakes in three different climate zones on the Southwestern Tibetan Plateau were analyzed.Values were compared with n-alkanes in plants from lake drainages,and dD values of meteoric water,lake water,and mean annual precipitation.The results showed that n-C23was predominantly derived from aquatic plants,and n-C27–n-C33from terrestrial higher plants.The average carbon chain length of n-C27–n-C33(ACL27–33)was positively correlated with the mean annual precipitation.dD values of the long-chain n-alkanes n-C29and n-C31of terrestrial origin(varying between-214%and-169%,and-226%and-185%,respectively)were inversely correlated with mean annual precipitation;but in accordance with the average annual variations in dD(OIPC),dD values of n-C31were strongly related to the dD values of growing season meteoric water(R2=0.74).The large difference between dD values of n-C23of aquatic origin and n-C31(an average of about 27%)demonstrates the enrichment of the lake water dD compared to precipitation,caused by strong evaporation in the semiarid–arid areas of the southwestern Tibetan Plateau.Average value of en C25 31=p(-95%)is evidently higher than the value observed in European wet regions(-128%);besides,en C31(about-116%)is constant along the study transect(SD=9),which indicates that n-C31is a useful proxy for the environment. | Xing Hu Liping Zhu Yong Wang Junbo Wang Ping Peng Qingfeng Ma Jianfang Hu Xiao Lin | 2014 | Chinese Science Bulletin2014，59，24： | 3 |
| 5 | Modulating the optical and electrical properties of MAPbBr_(3) single crystals via voltage regulation engineering and application in memristors显示文摘Defect density is one of the most significant characteristics of perovskite single crystals(PSCs)that determines their optical and electrical properties,but few strategies are available to tune this property.Here,we demonstrate that voltage regulation is an efficient method to tune defect density,as well as the optical and electrical properties of PSCs.A three-step carrier transport model of MAPbBr_(3) PSCs is proposed to explore the defect regulation mechanism and carrier transport dynamics via an applied bias.Dynamic and steady-state photoluminescence measurements subsequently show that the surface defect density,average carrier lifetime,and photoluminescence intensity can be efficiently tuned by the applied bias.In particular,when the regulation voltage is 20 V(electrical poling intensity is 0.167 Vμm^(−1)),the surface defect density of MAPbBr_(3) PSCs is reduced by 24.27%,the carrier lifetime is prolonged by 32.04%,and the PL intensity is increased by 112.96%.Furthermore,a voltage-regulated MAPbBr_(3) PSC memristor device shows an adjustable multiresistance,weak ion migration effect and greatly enhanced device stability.Voltage regulation is a promising engineering technique for developing advanced perovskite optoelectronic devices. | Jun Xing Chen Zhao Yuting Zou Wenchi Kong Zhi Yu Yuwei Shan Qingfeng Dong Ding Zhou Weili Yu Chunlei Guo | 2020 | Light(Science & Applications)2020，9，1： | 3 |
| 6 | Origin of inhomogeneity in spark plasma sintered bismuth antimony telluride thermoelectric nanocomposites显示文摘Anisotropy and inhomogeneity are ubiquitous in spark plasma sintered thermoelectric devices.However,the origin of inhomogeneity in thermoelectric nanocomposites has rarely been investigated so far.Herein,we systematically study the impact of inhomogeneity in spark plasma sintered bismuth antimony telluride(BiSbTe)thermoelectric nanocomposites fabricated from solution-synthesized nanoplates.The figure of merit can reach 1.18,which,however,can be overestimated to 1.88 without considering the inhomogeneity.Our study reveals that the inhomogeneity in thermoelectric properties is attributed to the non-uniformity of porosity,textures and elemental distribution from electron backscatter diffraction and energy-dispersive spectroscopy characterizations.This finding suggests that the optimization of bulk material homogeneity should also be actively pursued in any future thermoelectric material research. | Enzheng Shi Shuang Cui Nicholas Kempf Qingfeng Xing Thomas Chasapis Huazhang Zhu Zhe Li Je-Hyeong Bahk G.Jeffrey Snyder Yanliang Zhang Renkun Chen Yue Wu | 2020 | Nano Research2020，13，5： | 2 |
| 7 | Genetic diversity in Isoetes yunguiensis,a rare and endangered endemic fern in China显示文摘Isoetes yunguiensis is an endangered and endem-ic fern in China.Field survey indicated that only one popula-tion and no more than 50 individuals occur in the wild.The genetic variation of 46 individuals from the population remaining at Pingba(Guizhou Province,China)was assessed by Random Amplified Polymorphic DNA(RAPD)fingerprinting.Twelve primers were screened from sixty ten-bp arbitrary primers,and a total of 95 DNA fragments were scored.Of these,62.1%were polymorphic loci,which indi-cated that high level genetic variation existed in the natural population.The accumulation of genetic variation in the history of the taxon and the apparent minimal reduction effect on genetic diversity following destruction of habitat might be responsible for the high level genetic diversity presently remaining in the I.yunguiensis population.However,with the continuing decrease of population size,the genetic diversity will gradually be lost.We suggest that the materials from the extant population should be used for re-establishment of the populations. | CHEN Jinming Wahiti R.Gituru LIU Xing WANG Qingfeng | 2007 | Frontiers in Biology2007，2，1： | 1 |
| 8 | 多尺度河岸带生态系统服务供需关系映射分析显示文摘Riparian areas produce a variety of ecosystem service(ES)functions and play an important role in the coupled nature-human systems.Taking account of riparian ES in riparian greenspace planning framework and balancing the ecological and social aspects of ES can help to achieve the composite goals for urban-rural sustainability.However,there is still a lack of research on the integration thinking and quantification approach for riparian ES to support riparian greenspace planning and decision-making.This research mainly discusses the possible way of incorporating the ES into riparian greenspace planning and presents an integrated framework of the interaction between riparian ES and riparian greenspace planning,including evaluating riparian ES supply-demand budget to support multi-scales(region,urban,and street)riparian greenspace planning.Taking the Nanchuan District of Chongqing in China as a case study,we aim to achieve the following three results:first,recognizing the relationship and building a link between riparian ES and riparian greenspace planning;second,establishing a multi-scale scoring system of two ES supply-demand indicators for mapping on three spatial scales;third,applying riparian ES supply-demand mapping into riparian greenspace planning from three aspects of balancing planning goals,multi-scale planning tasks,and planning strategies and policies. | Yu Qiao Xing Zhong Zhou Qingfeng Song Yan | 2020 | China City Planning Review2020，29，4： | 1 |
| 9 | Isoetes yun-guiensis(Isoetaceae), a New Basic Diploid Quillwort from China显示文摘 | Wang Qingfeng Liu Xing W Carl Taylor | 2002 | Novon2002，12，4： | 1 |
| 10 | Interfacial micro- structure of anodie-bonded Al/glass显示文摘 | Xing Qingfeng Sasaki G Fukunaga H | 2011 | Journal of Materials Science : Materials in Electronics2011，13，： | 1 |
| 11 | Interfacial Microstructure of Anodie-bonded Al/glass显示文摘 | Xing Qingfeng Sasaki G Fukunaga H | 2002 | Journal of Materials Science:Materials in Electronics2002，13，： | 1 |
| 12 | Nature of spin hall effect in a finite ballistic two-dimensional system with rashba and dresseihaus spin-orbit interaction显示文摘 | Xing Yanxia Sun Qingfeng Guo Hong | 2006 | Physical review B2006，73，20： | 1 |
| 13 | Interfacial microstructure of anodic-bonded A1/glass显示文摘 | Xing Qingfeng Saski G Fukunaga H | 2003 | Materials in Electronics2003，13，： | 1 |
| 14 | Spin-orbit coupling and spin current in mesoscopic devices显示文摘Recently,the spin-orbit coupling and spin current in nanodevice have been investigated extensively.In this paper,we review the recent progresses in this field.We introduce the real space Hamiltonian and the second quantization Hamiltonian of a typical quantum transport mesoscopic device,metal-QD-metal configuration,containing the spin-orbit interaction,e-e interactions,and magnetic field.Some noteworthy effects(e.g.,the spin-polarized current,spin accumulation,persistent spin current) originated from the spin-orbit interaction are reviewed,and the electric field induced by spin-current is mentioned.Lastly,we introduce some unsolved problems and prospects in this field. | XING YanXia SUN QingFeng | 2013 | Science China(Physics,Mechanics & Astronomy)2013，56，1： | 1 |
| 15 | Response time of a normal-metal superconductor hybrid system under a step-like pulse bias显示文摘 | Xing Yanxia Sun Qingfeng Wang Jian | 2007 | Phys Rev B2007，75，12： | 1 |
| 16 | Text Recognition of Barcode Images under Harsh Lighting Conditions显示文摘The inventory counting of silver ingots plays a key role in silver futures.However,the manual inventory counting is time-consuming and labor-intensive.Furthermore,the silver ingots are stored in warehouses with harsh lighting conditions,which makes the automatic inventory counting difficult.To meet the challenge,we propose an automatic inventory counting method integrating object detection and text recognition under harsh lighting conditions.With the help of our own dataset,the barcode on each silver ingot is detected and cropped by the feature pyramid network(FPN).The cropped image is normalized and corrected for text recognition.We use the PSENet+CRNN(Progressive Scale Expansion Network,Convolutional Recurrent Neural Network)for text detection and recognition to obtain the serial number of the silver ingot image.Experimental results show that the proposed automatic inventory counting method achieves good results since the accuracy of the proposed object detection and text recognition under harsh lighting conditions is near 99%. | WU Xing GE Yuxi ZHANG Qingfeng CHEN Liming | 2020 | Wuhan University Journal of Natural Sciences2020，25，6： | 1 |
| 17 | Three-step learning strategy for designing 15Cr ferritic steels with enhanced strength and plasticity at elevated temperature显示文摘15Cr ferrite steels are urgently required in advanced Ultra-supercritical power plants but meet design challenges in balancing excellent strength and plasticity at high temperatures.We developed a three-step learning strategy based on mutually driven machine learning and purposeful experiments to complete this multi-objective task.Compared with traditional adaptive learning and local-interpolation learning,this step-by-step modular manner provides good transparency and interpretability of the information flow,which is ensured by identifying essential factors from an exquisitely prepared composition-microstructure dataset,and learning valuable knowledge about the composition-property relationship.The requirement of only two groups of experiments indicates the low cost and high efficiency of the strategy.Performing the strategy,we found that Ti is another key element affecting the Laves phase besides Mo and W,and their effects on ultimate tensile strength(UTS)and elongation were also uncovered.Importantly,several low-cost steels free of Co were successfully designed,and the best steel exhibited 156%,31%,and 62%higher UTS and elongation at 650°C than the typical 9Cr,15Cr,and 20Cr steels,respectively.Based on the advantages and success of the strategy in terms of alloy improvement,we believe the strategy suits other multi-objective design tasks in more materials systems. | Xiaobing Hu Yiming Chen Jianlin Lu Chen Xing Jiajun Zhao Qingfeng Wu Yuhao Jia Junjie Li Zhijun Wang Jincheng Wang | 2023 | Journal of Materials Science & Technology2023，，33： | 0 |
| 18 | Tunable Multicolor Fluorescence of Perovskite-Based Composites for Optical Steganography and Light-Emitting Devices显示文摘Multicolor fluorescence of mixed halide perovskites enormously enables their applications in photonics and optoelectronics.However,it remains an arduous task to obtain multicolor emissions from perovskites containing single halogen to avoid phase segregation.Herein,a fluorescent composite containing Eu-based metal-organic frameworks(MOFs),OD Cs PbBre,and 3D CsPbBrs is synthesized.Under excitations at 365 nm and 254nm,the pristine composite emits blue(B)and red(R)fluorescence,which are ascribed to radiative defects within CsPbBr and 5Do→7F,transitions of Eu^(3+),respectively.Interestingly,after light soaking in the ambient environment,the blue fluorescence gradually converts into green(G)emission due to the defect repairing and 0D-3D phase conversion.This permanent and unique photochromic effect enables anticounterfeiting and microsteganography with increased security through a micropatterning technique.Moreover,the RGB luminescence is highly stable after encapsulation by a transparent polymer layer.Thus,trichromatic light-emitting modules are fabricated by using the fluorescent composites as color-converting layers,which almost fully cover the standard color gamut.Therefore,this work innovates a strategy for construction of tunable multicolor luminescence by manipulating the radiative defects and structural dimensionality. | Kewei Ma Qingfeng Gui Cihui Liu Yunyi Yang Fangjian Xing Yunsong Di Xiaoming Wen Baohua Jia Zhixing Gan | 2023 | Research2023，，1： | 0 |
| 19 | Bone-inspired(GNEC/HAPAAm)hydrogel with fatigue-resistance for use in underwater robots and highly piezoresistive sensors显示文摘A novel bone-inspired fatigue-resistant hydrogel with excellent mechanical and piezoresistive properties was developed,and it exhibited great potential as a load and strain sensor for underwater robotics and daily monitoring.The hydrogel was created by using the high edge density and aspect ratio of graphene nanosheet-embedded carbon(GNEC)nanomaterials to form a three-dimensional conductive network and prevent the expansion of microcracks in the hydrogel system.Multiscale progressive enhancement of the organic hydrogels(micrometer scale)was realized with inorganic graphene nanosheets(nanometer scale).The graphene nanocrystals inside the GNEC film exhibited good electron transport properties,and the increased distances between the graphene nanocrystals inside the GNEC film caused by external forces increased the resistance,so the hydrogel was highly sensitive and suitable for connection to a loop for sensing applications.The hydrogels obtained in this work exhibited excellent mechanical properties,such as tensile properties(strain up to 1685%)and strengths(stresses up to 171 kPa),that make them suitable for use as elastic retraction devices in robotics and provide high sensitivities(150 ms)for daily human monitoring. | Chaoyang Lyu Bo Wen Yangzhen Bai Daning Luo Xin Wang Qingfeng Zhang Chenyang Xing Tiantian Kong Dongfeng Diao Xi Zhang | 2023 | Microsystems & Nanoengineering2023，9，4： | 0 |
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