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57篇 您的检索式:作者名="Xiangyun Li"
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1A high-quality genome assembly of quinoa provides insights into the molecular basis of salt bladder-based salinity tolerance and the exceptional nutritional value显示文摘Changsong Zou Aojun Chen Lihong Xiao Heike M Muller Peter Ache Georg Haberer Meiling Zhang Wei Jia Ping Deng Ru Huang Daniel Lang Feng Li Dongliang Zhan Xiangyun Wu Hui Zhang Jennifer Bohm Renyi Liu Sergey Shabala Rainer Hedrich Jian-Kang Zhu Heng Zhang 2017Cell Research2017,27,11:22
2Are humic substances soil microbial residues or unique synthesized compounds?A perspective on their distinctiveness显示文摘Humic substances(HS),which are defined as a series of highly acidic,relatively high-molecular-weight,and yellow to black colored substances formed during the decay and transformation of plant and microbial remains,ubiquitously occur in nature.Humic substances represent the largest stable organic carbon pool in terrestrial environments and are the central characteristic of the soil.However,the validity of the HS concept and the justification of their extraction procedure have been recently debated.Here,we argue that the traditional humic paradigm is still relevant.Humic substances are distinctive and complex because the extracted HS formed during the humification are chemically distinct from their precursors and are heterogeneous among soils.By reviewing the concept,formation pathways,and stabilization of HS,we propose that the key question facing soil scientists is whether HS are soil microbial residues or unique synthesized compounds.Without revealing the distinctiveness of HS,it is impossible to address this question,as the structure,composition,and reactivity of HS are still poorly known owing to the heterogeneity and geographical variability of HS and the limits of the currently available analytical techniques.In our view,the distinctiveness of HS is fundamental to the soil,and thus further studies should be focused on revealing the distinctiveness of HS and explaining why HS hold this distinctiveness.Sen DOU Jun SHAN Xiangyun SONG Rui CAO Meng WU Chenglin LI Song GUAN 2020Pedosphere2020,30,2:12
3The binding of a monoclonal antibody to the apical region of SCARB2 blocks EV71 infection显示文摘(EV71 ) Entero 病毒 71 引起手,脚,和嘴疾病(HFMD ) 并且偶尔导致严重神经病学的复杂并发症甚至死亡。(SCARB2 ) Scavenger 受体班 B 成员 2 是为 EV71 的功能的受体,调停病毒的附件,成为主观,和 uncoating。然而, SCARB2 上的 EV71 的准确有约束力的地点是未知的。在这研究,我们产生了绑在人然而并非老鼠 SCARB2 的 monoclonal 抗体(mAb ) 。它被称为 JL2,并且它能有效地禁止目标房间的 EV71 感染。用人和老鼠 SCARB2 的一套怪物,我们鉴别包含人的 SCARB2 的残余 77-113 的区域显著地作出贡献到 JL2 绑定。SCARB2-JL2 建筑群的结构表明 JL2 绑在包含 -helices 的 SCARB2 的顶端的区域 2, 5,和 14。我们的结果在 SCARB2 和 EV71 入口的分子的机制上为 EV71 提供新卓见进潜在的有约束力的地点。Xuyuan Zhang Pan Yang Nan Wang Jialong Zhang Jingyun Li Hao Guo Xiangyun Yin Zihe Rao Xiangxi wang Liguo Zhang 2017Protein & Cell2017,8,8:10
4Sedimentary Evolution and Transgressions of the Western Subei Basin in Eastern China since the Late Pliocene显示文摘Sedimentary sequences in the Subei Basin are complex and have been affected by interactions between the ocean and rivers since the Late Pliocene, including the Yellow River, Huaihe River, and the Yangtze River. This sedimentary evolution, in particular the timing of Pleistocene transgressions, has long been a matter of controversy owing to the lack of precise chronological evidence. The aim of this study is to explore the evolution of the sedimentary environment throughout the past 3.00 Ma in this region on the basis of a comprehensive analysis of particle size and foraminifera and ostracods collected in the TZK9 core from the Subei Basin combined with geochronological studies of magnetostratigraphy, AMS^(14)C and optically stimulated luminescence(OSL). The results show that fluvial facies in the sedimentary environment from 3.00 to 1.01 Ma. There were fluvial facies and reflects six sea-level high stands from 1.01 to 0.25 Ma. The study area was affected by four large-scale transgressions since 0.25 Ma. The four marine sedimentary layers known as DU7(buried at 48–52 m), DU5(buried at 35–41 m), DU3(buried at 16–23 m), and DU1(buried at 2–4 m) are recorded in the MIS7(210–250 ka), MIS5, MIS3, and Holocene, respectively. The magnitude of the DU5 transgression was identical to that of the DU3 transgression, both were larger than the DU7 transgression, and the DU1 transgression was the weakest. The variation of transgression strength reflects the influence of global changes in sea level, tectonic subsidence, shell ridges, and sand dams. In the TZK9 core, we found evidence of seven sea-level high stands from the Early–Middle Pleistocene, and the first one caused by regional rapid subsidence and could be traced back to 0.83-0.84 Ma. The sea-level high stands and the age of the first one recorded above was different from other cores in eastern China, this was caused by the lack of absolute age control and the differences in paleotopography during this period. This study reconstructs sedimentary evolution, determines the transgression and its age, establishes the chronology since the Late Pliocene, and provides a scientific framework for further paleoenvironmental and tectonic studies. The results of this study highlight the important role that local tectonics and global sea level play in the sedimentary evolution and transgressions that have occurred in the western Subei Basin.CHENG Yu LI Xiangqian SHU Junwu BAI Shibiao ZHAO Zengyu ZHANG Xiangyun GUO Gang ZHANG Ping LIN Jingxing 2019Acta Geologica Sinica(English Edition)2019,93,1:7
5Melatonin enhances radiofrequency-induced NK antitumor immunity,causing cancer metabolism reprogramming and inhibition of multiple pulmonary tumor development显示文摘Surgery is the comm on treatme nt for early lung cancer with multiple pulm onary no dules,but it is often accompanied by the problem of significant malignancy of other nodules in non-therapeutic areas.In this study,we found that a combined treatment of local rad iofreq ue ncy ablati on(RFA)and melatonin(MLT)greatly improved clinical outcomes for early lung cancer patie nts with multiple pulmonary nodules by minimizing lung function injury and reducing the probability of malignant transformation or enlargement of nodules in non-ablated areas.Mechanically,as demonstrated in an associated mouse lung tumor model,RFA not only effectively remove treated tumors but also stimulate antitumor immunity,which could inhibit tumor growth in non-ablated areas.MLT enhanced RFA-stimulated NK activity and exerted synergistic antitumor effects with RFA.Transcriptomics and proteomics analyses of residual tumor tissues revealed enhanced oxidative phosphorylation and reduced acidification as well as hypoxia in the tumor microenvironment,which suggests reprogrammed tumor metabolism after combined treatment with RFA and MLT.Analysis of residual tumor further revealed the depressed activity of MAPK,NF-kappa B,Wnt,and Hedgehog pathways and upregulated P53 pathway in tumors,which was in line with the inhibited tumor growth.Combined RFA and MLT treatment also reversed the Warburg effect and decreased tumor malignancy.These findings thus demonstrated that combined treatment of RFA and MLT effectively inhibited the malignancy of non-ablated nodules and provided an innovative non-invasive strategy for treating early lung tumors with multiple pulmonary nodules.Trial registration:www.chictr.org.cn,identifier ChiCTR2100042695,http://gffzz62a03ee25e6f4a77hcfw06nubko5v6bfp.ffgz.tsg.suse.edu.cn/showproj.aspx?proj=120931.Ming Li Bingjie Hao Menghuan Zhang Russel J.Reiter Shumeng Lin Tiansheng Zheng Xiangyun Chen Yanbei Ren Liduo Yue Baigenzhin Abay Guojie Chen Xiao Xu Yufeng Shi Lihong Fan 2021Signal Transduction and Targeted Therapy2021,6,10:6
6Rational development of a human antibody cocktail that deploys multiple functions to confer Pan-SARS-CoVs protection显示文摘Structural principles underlying the composition and synergistic mechanisms of protective monoclonal antibody cocktails are poorly defined.Here,we exploited antibody cooperativity to develop a therapeutic antibody cocktail against SARS-CoV-2.On the basis of our previously identified humanized cross-neutralizing antibody H014,we systematically an a lyzed a fully human n aive antibody library and rationally identified a potent neutralizing antibody partner,P17,which confers effective protection in animal model.Cryo-EM studies dissected the nature of the P17 epitope,which is SARS-CoV-2 specific and distinctly different from that of HOI4.High-resolution structure of the SARS-CoV-2 spike in complex with HOM and P17,together with functional investigations revealed that in a two-antibody cocktail,synergistic neutralization was achieved by S1 shielding and conformational locking,thereby blocking receptor attachment and viral membrane fusion,conferring high potency as well as robustness against viral mutation escape.Furthermore,cluster analysis identified a hypothetical 3rd antibody partner for further reinforcing the cocktail as pan-SARS-CoVs therapeutics.Hangping Yao Yao Sun Yong-Qiang Deng Nan Wang Yongcong Tan Na-Na Zhang Xiao-Feng Li Chao Kong Yan-Peng Xuc Qi Chen Tian-Shu Cao Hui Zhao Xintian Yan Lei Cao Zhe Lv Dandan Zhu Rui Feng Nanping Wu Wenhai Zhang Yuhao Hu Keda Chen Rong-Rong Zhang Qingyu Lv Shihui Sun Yunhua Zhou Run Yan Guan Yang Xinglu Chanjuan Liu Xiangyun Lu Linfang Cheng Hongying Qiu Xing-Yao Huang Tianhao Weng Danrong Shi Weidong Jiang Junbin Shao Lei Wang Jie Zhang Tao Jiang Guojun Lang Cheng-Feng Qinc Lanjuan Li Xiangxi Wang 2021Cell Research2021,31,1:5
7Ferroelectricity of nanocrystalline BaTiO_3 ceramics by first principle calculation显示文摘The vibrational modes of BaTiO3 in different crystalline phases have been investigated by means of density functional theory pseudo potential method.The evidence of tetragonal to orthorhombic and orthorhombic to rhombohedral phase transitions present for 8 nm BaTiO3 ceramics further demonstrates that the similar successive transitions in 8 nm BaTiO3 ceramics from rhombohedral to orthorhombic,tetragonal and cubic transitions are as those in coarse BaTiO3 ceramics.DENG XiangYun ZHANG HaiTao LI Ting LI DeJun LI JianBao WANG XiaoHui LI LongTu 2010Chinese Science Bulletin2010,55,20:4
8The effects of modulation period,modulation ratio,and deposition temperature on microstructure and mechanical properties of ZrB_2/W multilayers显示文摘Monolithic ZrB2,W coatings and ZrB2/W multilayers with different modulation periods and modulation ratios were synthesized by ion beam assisted deposition at room temperature and 400°C.X-ray diffraction (XRD),scanning electron microscopy (SEM),surface profiler,and nanoindention were employed to investigate the influences of the deposition temperature and the modulation period on the growth,textures,interface structure,and mechanical properties of the multilayers.The results indicated that the multilayer with modulation period of 13 nm synthesized at room temperature possessed a higher hardness of 23.8 GPa.Deposition temperature gave a significant contribution to mechanical property enhancement.The 400°C-deposition temperature led to a maximum hardness and elastic modulus value of 32.1 and 399.1 GPa for ZrB2/W multilayer with a modulation period of 6.7 nm.Its critical load increased to 42.8 mN and residual stress decreased to -0.7 GPa.A higher deposition temperature can cause an increase in interfacial atomic mixture and mobility of surface species,which induceds an increase in areal atomic density and dislocation pinning.These results as well as small nanoscale grain sizes should be related to hardness increase.LIU MengYin,TAN Ming,LIU GuangQing,WANG HaiYuan,XUE FengYing,DENG XiangYun & LI DeJun College of Physics and Electronic Information Science,Tianjin Normal University,Tianjin 300387,China 2010Science China(Technological Sciences)2010,53,9:4
9In vitro comparison of the hemocompatibility of diamond-like carbon and carbon nitride coatings with different atomic percentages of N显示文摘Carbon nitride (CNx) and diamond-like carbon (DLC) coatings were prepared by dc magnetron sputtering at room temperature. Different partial pressures of N2 were used to synthesize CNx to evaluate the relationship between the atomic percentage of nitrogen and hemocompatibility. Auger electron spectroscopy and atomic force microscopy indicated atomic percentages of N of 0.12 and 0.22 and that the CNx coatings were smooth. An in vitro study of the hemocompatibility of the coatings revealed that both CNx coatings had better anticoagulant properties and lower platelet adhesion than DLC. Compared with CN0.12, the CN0.22 coating showed longer dynamic clotting time (about 42 min), static clotting time (23.6 min) and recalcification time (45.6 s), as well as lower platelet adhesion (102 cells μm 2), aggregation, and activation. The presence of nitrogen in the CNx coatings induced their enhanced hemocompatibility compared with DLC.ZHAO MengLi LI DeJun ZHANG YiTeng GUO MeiXian DENG XiangYun GU HanQing WAN RongXin 2012Science China(Life Sciences)2012,55,4:3
10Dimensional synthesis of a novel 5-DOF reconfigurable hybrid perfusion manipulator for large-scale spherical honeycomb perfusion显示文摘A novel hybrid perfusion manipulator(HPM)with five degrees of freedom(DOFs)is introduced by combining the 5PUS-PRPU(P,R,U and S represent prismatic,revolute,universal and spherical joint,respectively)parallel mechanism with the 5PRR reconfigurable base to enhance the perfusion efficiency of the large-scale spherical honeycomb thermal protection layer.This study mainly presents the dimensional synthesis of the proposed HPM.First,the inverse kinematics,including the analytic expression of the rotation angles of the U joint in the PUS limb,is obtained,and mobility analysis is conducted based on screw theory.The Jacobian matrix of 5PUS-PRPU is also determined with screw theory and used for the establishment of the objective function.Second,a global and comprehensive objective function(GCOF)is proposed to represent the Jacobian matrix’s condition number.With the genetic algorithm,dimensional synthesis is conducted by minimizing GCOF subject to the given variable constraints.The values of the designed variables corresponding to different configurations of the reconfigurable base are then obtained.Lastly,the optimal structure parameters of the proposed 5-DOF HPM are determined.Results show that the HPM with the optimized parameters has an enlarged orientation workspace,and the maximum angle of the reconfigurable base is decreased,which is conducive to improving the overall stiffness of HPM.Hui YANG Hairong FANG Yuefa FANG Xiangyun LI 2021Frontiers of Mechanical Engineering2021,16,1:2
11Chinese Teachers’Professional Identity and Beliefs about the Teacher-Student Relationships in an Intercultural Context显示文摘This paper presents a qualitative study of immigrant Chinese teachers’professional identity and beliefs about the teacher-student relationship in an intercultural context.Theoretically,this study takes its departure from a sociocultural perspective on understanding professional identity.The empirical analysis in the study drew mainly upon ethnographic interviews with a group of Chinese language teachers in Denmark concerning their life experiences,perceptions,and beliefs.The results of this study suggest that teachers’beliefs about their roles as teachers and about student-teacher relationships are shaped by both their prior experiences and backgrounds and the current social and cultural contexts in which they are situated.Changes of context(e.g.,from China to Denmark)often lead to a transformation of their professional identity and beliefs.Being a teacher in an intercultural context often exposes them to the confrontation of diverse challenges and dilemmas.On one hand,teachers in this study generally experienced a transformation from being a moral role model,subject expert,authority and parental role to being a learning facilitator and culture worker.On the other hand,they developed diverse individualized coping strategies to handle student-teacher interactions and other aspects of teachers’professional identity.Li WANG Xiangyun DU 2014Frontiers of Education in China2014,9,3:2
12Human health ambient water quality criteria for 13 heavy metals and health risk assessment in Taihu Lake显示文摘Heavy metals are widely concerning because of their toxicity,persistence,non-degradation and bioaccumulation ability.Iluman health ambient water quality criteria(AWQC)are specific levels of chemicals that can occur in water without harming human health.At present,most countries do not consider the effects of aquatic vegetables in deriving human health AWQC.Therefore,the intake of aquatic vegetables(Brasenia schreberi)was added to the derivation of human health AWQC and a health risk assessment for 13 heavy metals in Taihu Lake.The human health AWQC(consumption of water,fish and aquatic vegetables)values of 13 heavy metals ranged from 0.04(Cd)to 710.87μg/L(Sn),and the intake of B.schreberi had a very significant effect on the human health AWQC for Cu,with a more than 62-fold difference.The hazard quotients of As(2.8),Cd(1.6),Cr(1.4)and Cu(4.86)were higher than the safe level(HQ=1),indicating that As,Cd,Cr and Cu in Taihu Lake posed a significant health risk.Sensitivity analysis showed that the contribution rate of B.schreberi intake to the human health risk from Cu was 91.6%,and all results indicated that the risk of Cu in B.schreberi to human health should be of particular concern.This study adds the consideration of aquatic vegetable consumption to the traditional method of human health AWQC derivation and risk assessments for the first time,and this approach can promote the development of risk assessments and water quality criteria.Liang Cui Ji Li Xiangyun Gao Biao Tian Jiawen Zhang Xiaonan Wang Zhengtao Liu 2022Frontiers of Environmental Science & Engineering2022,16,4:2
13Evaluation of maize inbred lines for resistance to pre-harvest aflatoxin and fumonisin contamination in the field显示文摘Two important mycotoxins, aflatoxin and fumonisin, are among the most potent naturally occurring carcinogens, contaminating maize(Zea mays) and affecting crop yield and quality.Resistance of maize to pre-harvest mycotoxin contamination, specifically aflatoxin produced by Aspergillus flavus and fumonisin produced by Fusarium verticillioides, is a goal in breeding programs that screen for these important traits with the aim of developing resistant commercial hybrids. We conducted two years of field evaluations on 87 inbred lines originating primarily in China and Mexico and not previously screened for resistance.The objectives of our study were to identify resistant germplasm for breeding purposes and to examine possible relationships between resistances to the two mycotoxins. Aflatoxin and fumonisin were present in samples harvested from all lines in both years.Concentrations of total aflatoxin ranged from 52.00 ± 20.00 to 1524.00 ± 396.00 μg kg^(-1),while those of fumonisin ranged from 0.60 ± 0.06 to 124.00 ± 19.50 mg kg^(-1). The inbred lines TUN15, TUN61, TUN37, CY2, and TUN49 showed the lowest aflatoxin accumulation and CN1, GT601, TUN09, TUN61, and MP717 the lowest fumonisin accumulation. TUN61 showed the lowest accumulation of both mycotoxins. This study confirmed previous observations that high levels of aflatoxin can coexist with fumonisin, with 55 maize lines showing a positive correlation coefficient between the concentrations of aflatoxin and fumonisin and 32 lines showing a negative correlation coefficient. These selected lines,particularly TUN61, may provide sources of resistance to mycotoxin contamination in breeding programs. However, the mechanism of resistance in this germplasm remains to be identified. Future research should also address factors that influence the fungus–plant interaction, such as herbivory and environmental stress.Baozhu Guo Xiangyun Ji Xinzhi Ni Jake C.Fountain Hong Li Hamed K.Abbas Robert D.Lee Brian T.Scully 2017The Crop Journal2017,5,3:1
14Diffusion and Adsorption of Tetralin Hydrocracking Reaction on Different Zeolites by Molecular Simulation显示文摘Three different zeolite catalysts with different pore sizes(MFI-type,BEA-type,and FAU-type zeolites)have been prepared.The influence of different zeolite catalysts on reactivity and product shape selectivity of tetralin is investigated.Clear differences are observed in the reactivity of tetralin and distribution of products achieved by different catalysts.The diffusion and adsorption behavior of the reactant tetralin and its intermediates,n-butylbenzene and 1-methylindane under the reaction conditions are simulated using molecular simulation methods.Upon combining simulation results and experimental observations,it is shown that the difference in diffusion coefficient and competitive adsorption capacity can explain the reactivity of tetralin and the selectivity of products.The steric hindrance of the MFI-type zeolite mainly limits the key step of ring opening of tetralin,leading to lower selectivity of ring-opening products.n-Butylbenzene molecules can diffuse sufficiently fast in the large pores of FAU-type zeolite and the weak adsorption capacity of n-butylbenzene leads to its insufficient cracking.In addition,it also explains the reason that the BEA-type zeolite has the best BTX selectivity,because it can satisfy both good ring-opening activity and sufficient butylbenzene cracking depth.Sun Lijie Fan Yaming Dong Songtao Xian Ce Long Xiangyun Li Dadong 2021China Petroleum Processing & Petrochemical Technology2021,23,1:1
15Low Power EEPROM Designed for Sensor Interface Circuit显示文摘MENG Xiangyun YANG Sen CHEN Zhongjian LU Wengao ZHANG Yacong HUANG Jingqing LI Haojiong SU Weiguo LI Song 2012Chinese Journal of Electronics2012,21,4:1
16A comprehensive understanding of electrode thickness effects on the electro- chemical performances of Li - ion battery cathodes 显示文摘Zheng Honghe Li Jing Song Xiangyun 2012Electrochimica Acta2012,71,2:1
17RNA interference targeting NRP-1 inhibits human glioma cell proliferationand enhances cell apoptosis显示文摘Xiangyun Li Ting Tang Xiaozhe Lu Houguang Zhou Yanyan Huang 2011Molecular Medicine Reports2011,,6:1
18Unusual global outbreak of monkeypox:what should we do?显示文摘Recently,monkeypox has become a global concern amid the ongoing COVID-19 pandemic.Monkeypox is an acute rash zoonosis caused by the monkeypox virus,which was previously concentrated in Africa.The re-emergence of this pathogen seems unusual on account of outbreaks in multiple nonendemic countries and the incline to spread from person to person.We need to revisit this virus to prevent the epidemic from getting worse.In this review,we comprehensively summarize studies on monkeypox,including its epidemiology,biological characteristics,pathogenesis,and clinical characteristics,as well as therapeutics and vaccines,highlighting its unusual outbreak attributed to the transformation of transmission.We also analyze the present situation and put forward countermeasures from both clinical and scientific research to address it.Miaojin Zhu Jia Ji Danrong Shi Xiangyun Lu Baohong Wang Nanping Wu Jie Wu Hangping Yao Lanjuan Li 2022Frontiers of Medicine2022,16,4:1
19Local edge distributions for detection of salient structure textures and objects 显示文摘Hu Xiangyun SHEN Jiajie SHAN Jie PAN Li IEEE Geoscience and Remote Sensing Letters0,,:1
20Influence of modulation ratio on structure and properties of nanoscale ZrB_2/ZrAlN multilayered coatings显示文摘ZrB2/ZrAlN multilayered coatings with various modulation ratios(t ZrB2:t ZrAlN)and constant modulation periods were prepared by magnetron sputtering system at room temperature.SEM,XRD,surface profiler and nano-indenter were employed to investigate the influences of tZ rB 2:tZrAlNon the microstructure and mechanical properties of the coatings.Sharp interfaces and nanoscale multilayered modulation were confirmed by SEM.The multilayer with modulation period of 40 nm and ratio of 3:1 displayed the highest hardness(36.4 GPa)and critical fracture load(76.477 mN)with lower stress.The polycrystalline structure and multilayered modulate structure were directly responsible for the enhanced mechanical properties.LI DeJun 1,KANG YuanBin 1,DONG Lei 1,DENG XiangYun 1,LIU Hao 2 &SUN XueLiang 2 1College of Physics and Electronic Information Science,Tianjin Normal University,Tianjin 300387,China 2 Department of Mechanical&Materials Engineering,University of Western Ontario,London ON,Canada 2010Science China(Technological Sciences)2010,53,3:1
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