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34篇 您的检索式:作者名="Xingchen Liu"
    题名 作者 年代 出处 被引量
1PlantcircBase: A Database for Plant Circular RNAs显示文摘Qinjie Chu Xingchen Zhang Xintian Zhu Chen Liu Lingfeng Mao Chuyu Ye Qian-Hao Zhu Longjiang Fan 2017Molecular Plant2017,10,8:15
2Selective laser melting(SLM)of CX stainless steel:Theoretical calculation,process optimization and strengthening mechanism显示文摘In the present work,selective laser melting(SLM)technology was utilized for manufacturing CX stainless steel samples under a series of laser parameters.The effect of laser linear energy density on the microstructure characteristics,phase distribution,crystallographic orientation and mechanical properties of these CX stainless steel samples were investigated theoretically and experimentally via scanning electron microscope(SEM),X-ray diffraction(XRD),electron backscatter diffraction(EBSD)and transmission electron microscope(TEM).Based on the systematic study,the SLM CX stainless steel sample with best surface roughness(Ra=4.05±1.8μm)and relative density(Rd=99.72%±0.22%)under the optimal linear density(η=245 J/m)can be obtained.SLM CX stainless steel was primarily constituted by a large number of fine martensite(α’phase)structures(i.e.,cell structures,cellular dendrites and blocky grains)and a small quantity of austenite(γphase)structures.The pre ferred crystallographic orientation(i.e.,<111>direction)can be determined in the XZ plane of the SLM CX sample.Furthermore,under the optimal linear energy density,the good combinations with the highest ultimate tensile strength(UTS=1068.0%±5.9%)and the best total elongation(TE=15.70%±0.26%)of the SLM CX sample can be attained.Dislocation strengthening dominates the strengthening mechanism of the SLM CX sample in as-built state.Dongdong Dong Cheng Chang Hao Wang Xingchen Yan Wenyou Ma Min Liu Sihao Deng Julien Gardan Rodolphe Bolot Hanlin Liao 2021Journal of Materials Science & Technology2021,,14:11
3Improving fatigue performance of Ti-6Al-4V alloy via ultrasonic surface rolling process显示文摘The effect of a gradient nanostructured(GNS) surface layer obtained by ultrasonic surface rolling process(USRP) on the fatigue behavior of Ti-6Al-4V alloy has been studied in this paper. Microstructure, surface topography, surface roughness and residual stress measurements were performed to characterize the surface under different conditions. Rotating bending fatigue tests were carried out to evaluate the fatigue behavior of different treatments. The results present a remarkable fatigue performance enhancement for the Ti-6Al-4V alloy with a GNS surface layer obtained by application of USRP with respect to the untreated condition, notwithstanding its considerable surface roughness due to severe ultrasonic impacts and extrusions. Mechanical surface polishing treatment further enhances the beneficial effects of USRP on the fatigue performance. The significantly improved fatigue performance can mainly be ascribed to the compressive residual stress. Simultaneously, the GNS surface layer and surface work hardening have a synergistic effect that accompanies the effect of compressive residual stress.Chengsong Liu Daoxin Liu Xiaohua Zhang Dan Liu Amin Ma Ni Ao Xingchen Xu 2019Journal of Materials Science & Technology2019,35,8:7
4Contribution of ultrasonic surface rolling process to the fatigue properties of TB8 alloy with body-centered cubic structure显示文摘The effect of ultrasonic surface rolling process(USRP) as a severe plastic deformation technology was investigated on the evolution of microstructure, residual stress and surface morphology of TB8 alloys with body-centered cubic structure. Stress-controlled rotating-bending fatigue tests indicated increased fatigue strength in USRP samples prepared using different number of passes compared to the base material, which was attributed to the presence of gradient structure surface layers. Five subsequent USRP passes resulted in the highest fatigue strength, due to the optimal surface properties including higher extent of grain refinement, larger compressive residual stresses, 'smoother' surface morphology and increased micro-hardness. However, the effect of USRP technology on improving fatigue strength of TB8 alloy was not significant in comparison with that of other titanium alloys(for example, Ti6 Al4 V), which was attributed to the notable surface residual stresses relaxation revealed from measurements on postfatigued USRP samples. Electron backscatter diffraction analysis confirmed that fatigue crack initiation occurred in the larger grains on the surface with high Schmid factor. Small cracks were found to propagate into the core material in a mixed transgranular and intergranular mode. Further analysis indicated that grain growth existed in post-fatigued USRP-treated TB8 samples and that the average geometrically necessary dislocations value reduced after fatigue loading.Dan Liu Daoxin Liu Mario Guagliano Xingchen Xu Kaifa Fan Sara Bagherifard 2021Journal of Materials Science & Technology2021,,2:5
5Wheat breeding history reveals synergistic selection of pleiotropic genomic sites for plant architecture and grain yield显示文摘Diversity surveys of crop germplasm are important for gaining insights into the genomic basis for plant architecture and grain yield improvement,which is still poorly understood in wheat.In this study,we exome sequenced 287 wheat accessions that were collected in the past 100 years.Population genetics analysis identified that 6.7%of the wheat genome falls within the selective sweeps between landraces and cultivars,which harbors the genes known for yield improvement.These regions were asymmetrically distributed on the A and B subgenomes with regulatory genes being favorably selected.Genome-wide association study(GWAS)identified genomic loci associated with traits for yield potential,and two underlying genes,TaARF12 encoding an auxin response factor and TaDEP1 encoding the G-proteinγ-subunit,were located and characterized to pleiotropically regulate both plant height and grain weight.Elite single-nucleotide haplotypes with increased allele frequency in cultivars relative to the landraces were identified and found to have accumulated over the course of breeding.Interestingly,we found that TaARF12 and TaDEP1 function in epistasis with the classical plant height Rht-1 locus,leading to propose a“Green Revolution”-based working model for historical wheat breeding.Collectively,our study identifies selection signatures that fine-tune the gibberellin pathway during modern wheat breeding and provides a wealth of genomic diversity resources for the wheat research community.Aili Li Chenyang Hao Zhenyu Wang Shuaifeng Geng Meiling Jia Fang Wang Xiang Han Xingchen Kong Lingjie Yin Shu Tao Zhongyin Deng Ruyi Liao Guoliang Sun Ke Wang Xingguo Ye Chengzhi Jiao Hongfeng Lu Yun Zhou Dengcai Liu Xiangdong Fu Xueyong Zhang Long Mao 2022Molecular Plant2022,15,3:4
6Ni-doped ZnCo2O4 atomic layers to boost the selectivity in solar-driven reduction of CO2显示文摘Katong Liu Xiaodong Li Liang Liang Ju Wu Xingchen Jiao Jiaqi Xu Yongfu Sun Yi Xie 2018Nano Research2018,11,6:3
7Recent advances on the structural modification of parthenolide and its derivatives as anticancer agents显示文摘Parthenolide(PTL)is a sesquiterpene lactone derived from medicinal plant feverfew(Tanacetum parthenium).Recent studies have demonstrated that it has multiple pharmacological activities,especially in the treatment of various hematological and solid cancers.The superior anticancer activity of PTL suggests that it has the potential to be a first-line drug.However,due to the limited physical and chemical properties,as well as bioavailability,structural modification strategies are strongly recommended to improve the anticancer activity.This review describes representative PTL derivatives obtained by different modification strategies,which are reported to exert antiproliferative activities superior to the parent compound PTL.Furthermore,we also summarize their basic mechanisms on cancer-related signaling pathways,so as to explain the potential and characteristics of PTL and its derivatives in cancer therapy.LIU Xingchen WANG Xiaobing 2022Chinese Journal of Natural Medicines2022,20,11:2
8Single-shot ultrafast multiplexed coherent diffraction imaging显示文摘Classic interferometry was commonly adopted to realize ultrafast phase imaging using pulsed lasers;however, the reference beam required makes the optical structure of the imaging system very complex, and high temporal resolution was reached by sacrificing spatial resolution. This study presents a type of single-shot ultrafast multiplexed coherent diffraction imaging technique to realize ultrafast phase imaging with both high spatial and temporal resolutions using a simple optical setup, and temporal resolution of nanosecond to femtosecond scale can be realized using lasers of different pulse durations. This technique applies a multiplexed algorithm to avoid the data division in space domain or frequency domain and greatly improves the spatial resolution. The advantages of this proposed technique on both the simple optical structure and high image quality were demonstrated by imaging the generation and evaluating the laser-induced damage and accompanying phenomenon of laser filament and shock wave at a spatial resolution better than 6.96 μm and a temporal resolution better than 10 ns.YINGMING XU XINGCHEN PAN MINGYING SUN WENFENG LIU CHENG LIU JIANQIANG ZHU 2022Photonics Research2022,10,8:2
9iRGD decorated liposomes:A novel actively penetrating topical ocular drug delivery strategy显示文摘Ocular drug delivery remains a significant challenge that is limited by poor corneal retention and permeation,resulting in low ocular bioavailability(<5%).Worse still,the most convenient and safe route of ocular drug administration,topical administration results in a drug bioavailability of less than 1%.iRGD modified drug delivery strategies have been developed for cancer therapy,however active targeting iRGD platforms for ocular drug delivery have yet to be explored.Herein,an iRGD modified liposomes was developed for ocular drug delivery via topical administration.The results indicated that iRGD modified liposomes could prolong the corneal retention time and enhance corneal permeability in an iRGD receptor mediated manner.These findings provided a novel strategy for topical ocular drug delivery for the treatment of posterior ocular diseases.Hai Huang Xiaorong Yang Huili Li Hansi Lu James Oswald Yongmei Liu Jun Zeng Chaohui Jin Xingchen Peng Jiyan Liu Xiangrong Song 2020Nano Research2020,13,11:2
10Large-size niobium disulfide nanoflakes down to bilayers grown by sulfurization显示文摘Atomically thin layers of group VB transition metal dichalcogenides (TMDs)provide a unique platform for studying two-dimensional (2D) superconductivityand charge density waves. Thus far, the bottom-up synthesis of these 2D TMDshas often involved precursors that are corrosive or toxic, and their lateral sizesare typically only a few micrometers. In this paper, we report the growth ofNbS2 nanoflakes with a thickness down to bilayers and a lateral dimension upto tens of micrometers without using harsh chemical species. NbS2 nanoflakeseither standing or lying with respect to the sapphire substrate were obtained bysulfurization of niobium oxide films that were prepared via pulsed laser deposition.Standing nanoflakes are considered to grow epitaxiaUy on the sapphire substrateaccording to their ordered orientation, while lying nanoflakes with randomorientations were grown directly on top of the niobium oxide films. The Ramanspectra of the 3R-phase exhibit strong dependence on the layer thickness, wherethe A1 mode softens as the layer number decreases. In contrast to the stable bulkNbS2, the ultra-thin nanoflakes were oxidized on their top surfaces after prolongedexposure to air, as revealed by X-ray photoelectron spectroscopy. Our workexplores an important route to synthesize large-size NbS2 nanoflakes and studiesthe oxidation process, which is a critical factor to consider if practical applicationsshould be realized in the future.Zhen Li Wencao Yang Yaroslav Losovyj Jun Chen Enzhi Xu Haoming Liu Madilynn Werbianskyj Herbert A. Fertig Xingchen Ye Shixiong Zhang 2018Nano Research2018,11,11:2
11Effects of adaptation to handling on the circadian rhythmicity of blood solutes in Mongolian gerbils显示文摘The Mongolian gerbil has been widely used in many research fields and has been reported to be a diurnal laboratory animal. The circadian rhythmicity of these gerbils was investigated in the present study by measuring two hormones that show daily oscillations, cortisol and ACTH, in serum using ELISA kits. The levels of the two hormones were highest at 8:00 am and their rhythmic changes were similar to those in humans. In addition, the influence of stress of handling and blood collection on the physiological parameters of the gerbils was examined. After adaptation to handling for 1 week, some serum parameters in the animals changed. Handling and blood collection did not impact significantly on the following parameters: creatine kinase (CK), lactate dehydrogenase (LD), alanine aminotransferase (ALT), aspartate transaminase (AST), blood urea nitrogen (BUN), and albumin (ALB). However, blood glucose (GLU), total protein (TP) and globulin (GLB) significantly increased while creatinine (CRE) and albumin/globulin (A/G) significantly decreased after adaptation. This work further confirms that the Mongolian gerbil is a diurnal animal and also indicates that a suitable adaptation procedure is necessary for getting reliable results when performing experiments using these animals.Xingchen Liu Xiang Zheng Yihan Liu Xiaoyan Du Zhenwen Chen 2019Animal Models and Experimental Medicine2019,2,2:1
12The interaction between Ag + and bovine serum albumin: A spectroscopic investigation显示文摘Xingchen Zhao Rutao Liu Yue Teng Xiaofang Liu 2010Science of the Total Environment2010,,5:1
13Hydrophobic surface modification of ramie fibers with ethanol pretreatment and atmospheric pressure plasma treatment显示文摘Zhou Zhou Liu Xingchen Hu Benting 2011Surface ~ Coatings Technology2011,205,:1
14An IntegratedIndicator on Regional Ecological Civilization Constructionin China 显示文摘LIU Moucheng LIU Xingchen YANG Zhenshan 2016International Journal of SustainableDevelopment & World Ecology2016,23,1:1
15Wavefront measurement techniques used in high power lasers显示文摘The properties of a series of phase measurement techniques,including interferometry,the Hartmann–Shack wavefront sensor,the knife-edge technique,and coherent diffraction imaging,are summarized and their performance in high power laser applications is compared.The advantages,disadvantages,and application ranges of each technique are discussed.Haiyan Wang Cheng Liu Xiaoliang He Xingchen Pan Shenlei Zhou Rong Wu Jianqiang Zhu 2014High Power Laser Science and Engineering2014,2,3:1
16Hydro- phobic surface modification of ramie fibers with ethanol pretreatment and atmospheric pressure plasma treatment 显示文摘Zhou Zhou Xingchen Liu Benting Hu 2011Surface & Coatings Technology2011,205,1718:1
17An online diagnosis technique for simultaneous measurement of the fundamental, second and third harmonics in one snapshot显示文摘A three-wavelength coherent-modulation-imaging(CMI)technique is proposed to simultaneously measure the fundamental,second and third harmonics of a laser driver in one snapshot.Laser beams at three wavelengths(1053 nm,526.5 nm and 351 nm)were simultaneously incident on a random phase plate to generate hybrid diffraction patterns,and a modified CMI algorithm was adopted to reconstruct the complex amplitude of each wavelength from one diffraction intensity frame.The validity of this proposed technique was verified using both numerical simulation and experimental analyses.Compared to commonly used measurement methods,this proposed method has several advantages,including a compact structure,convenient operation and high accuracy.Xue Dong Xingchen Pan Cheng Liu Jianqiang Zhu 2019High Power Laser Science and Engineering2019,7,3:1
18NAS4RRAM: neural network architecture search for inference on RRAM-based accelerators显示文摘The RRAM-based accelerators enable fast and energy-efficient inference for neural networks.However, there are some requirements to deploy neural networks on RRAM-based accelerators, which are not considered in existing neural networks.(1) Because the noise problem and analog-digital converters/digitalanalog converters(ADC/DAC) affect the prediction accuracy, they should be modeled in networks.(2) Because the weights are mapped to the RRAM cells, they should be quantized, and the number of weights is limited by the number of RRAM cells in the accelerator. These requirements motivate us to customize the hardware-friendly network for the RRAM-based accelerator. We take the idea of network architecture search(NAS) to design networks with high prediction accuracy that meet the requirements. We propose a framework called NAS4RRAM to search for the optimal network on the given RRAM-based accelerator. The experiments demonstrate that NAS4RRAM can apply to different RRAM-based accelerators with different scales. The performance of searched networks outperforms the manually designed ResNet.Zhihang YUAN Jingze LIU Xingchen LI Longhao YAN Haoxiang CHEN Bingzhe WU Yuchao YANG Guangyu SUN 2021Science China(Information Sciences)2021,64,6:0
19Environmental sustainability opportunity and socio-economic cost analyses of phosphorus recovery from sewage sludge显示文摘Although phosphorus(P)recovery and management from sewage sludge are practiced in North America and Europe,such practices are not yet to be implemented in China.Here,we evaluated the environmental sustainability opportunity and socio-economic costs of recovering P from sewage sludge by replacing the current-day treatments(CT;sludge treatment and landfill)and P chemical fertilizer application(CF)in China using life cycle assessment and life cycle costing methods.Three potential P recovery scenarios(PR1‒PR3:struvite,vivianite,and treated sludge)and corresponding current-day scenarios(CT1‒CT3 and CF)were considered.Results indicated that PR1 and PR2 have smaller environmental impacts than the current-day scenarios,whereas PR3 has larger impacts in most categories.PR3 has the lowest net costs(sum of internal costs and benefits,39.1-54.7 CNY per kg P),whereas PR2 has the lowest external costs(366.8 CNY per kg P).Societal costs for production and land use of 1 kg P by P recovery from sewage sludge(e.g.,∼527 CNY for PR1)are much higher than those of P chemical fertilizers(∼20 CNY for CF).However,considering the costs in the current-day treatments(e.g.,∼524 CNY for CT1),societal costs of P recovery scenarios are close to or slightly lower than those of current-day scenarios.Among the three P recovery scenarios,we found that recovering struvite as P fertilizer has the highest societal feasibility.This study will provide valuable information for improved sewage sludge management and will help promote the sustainable supply of P in China.Jiawen Xie Xingchen Zhuge Xixi Liu Qian Zhang Yiwen Liu Peizhe Sun Yingxin Zhao Yindong Tong 2023Environmental Science and Ecotechnology2023,,4:0
20minimal genome design to maximally guarantee fertile inter-subspecific hybrid rice显示文摘Hybrid rice has made considerable contributions to achieve the ambitious goal of food security for the world's population.Hybrid rice from indica/xian and japonica/geng subspecies shows much higher heter-osis and is thereby an important innovation in promoting rice production in the next decade.However,such inter-subspecific hybrid rice has long suffered from serious hybrid sterility,which is a major challenge that needs to be addressed.In this study,we performed a genome design strategy to produce fertile inter-subspecific hybrid by creation of wide compatibility varieties that are able to overcome hybrid sterility.Based on combined genetic analyses in two indica-japonica crosses,we determined that four hybrid ste-rility loci,S5,f5,pf12 and Sc,are the major QTLs controlling inter-subspecific hybrid sterility and thus the minimal targets that can be manipulated for breeding sub-specific hybrid rice.We then cloned the pf12 lo-cus,one of the most effective loci for hybrid male sterility,by map-based cloning,and showed that artificial disruption of pf12A gene at this locus could successfully rescue hybrid fertility.We further dissected the genetic basis of wide compatibility using three pairwise crosses from a wide-compatibility variety Dular and representative indica and japonica varieties.On this basis,we constructed and assembled different combinations of naturally compatible alleles of four loci,S5,Sc,pf12,and f5,and found that the improved lines could fully recover pollen and embryo sac fertility in test-crossed F,s,thereby completely fulfilling the demands of inter-subspecific hybrid spikelet fertility in agricultural production.This breeding scheme would facilitate redesign of future inter-subspecific hybrid rice with a higher yield potential.Penghui Zhou Zhengji Wang Xingchen Zhu Yao Tang Liang Ye Huihui Yu Yating Li Ningke Zhang Ting Liu Tian Wang Yuying Wu Dengyun Cao Yuan Chen Xu Li Qinglu Zhang Jinghua Xiao Sibin Yu Qifa Zhang Jiaming Mi Yidan Ouyang 2023Molecular Plant2023,16,4:0
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