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| 1 | Stage-progressive distribution pattern of the Lungmachi black graptolitic shales from Guizhou to Chongqing, Central China显示文摘The Lungmachi Formation is widely distributed in Guizhou, Chongqing and the adjacent area. It is important for the study of Silurian biostratigraphy and shale-gas investigation. Based on those biostratigraphically well-studied sections from Guiyang to Huayingshan, we reveal the stage-progressive distribution pattern of the Lungmachi black shales. The distribution of the Lungmachi black shales in the studying area can be subdivided into four geographic belts from the south to the north,reflecting the joint effect of regional and global environmental changes. The graptolite depth zonation model was adopted herein to infer the water depth of major graptolite assemblages from the black shales. The changes in the water depth indicate two major stages. The first stage is named the transgressive distribution stage which ranged from the Persculptograptus persculptus Biozone(LM1, upper Hirnantian) to the Coronograptus cyphus Biozone(LM5, upper Rhuddanian), an interval mostly controlled by global sea-level rise. The second stage, ranging from the Demirastrites triangulatus Biozone(LM6, lower Aeronian) to the Spirograptus guerichi Biozone(LM9, lower Telychian), is named the regressive shrinking stage, during which the black shales were gradually replaced by mixed-facies or carbonate sediments from the south to the north, representing the effects of the persistent uplifting of the Central Guizhou Oldland. | CHEN Xu FAN JunXuan WANG WenHui WANG HongYan NIE HaiKuan SHI XueWen WEN ZhiDong CHEN DongYang LI WenJie | 2017 | Science China Earth Sciences2017，60，6： | 23 |
| 2 | EQ_1^(rot) nonconforming finite element approximation to Signorini problem显示文摘In this paper, we apply EQ rot 1 nonconforming finite element to approximate Signorini problem. If the exact solution u∈H5/2(Ω), the error estimate of order O(h) about the broken energy norm is obtained for quadrilateral meshes satisfying regularity assumption and bi-section condition. Furthermore, the superconvergence results of order O(h3/2) are derived for rectangular meshes. Numerical results are presented to confirm the considered theory. | SHI DongYang XU Chao | 2013 | Science China Mathematics2013，56，6： | 15 |
| 3 | Transformative hyaluronic acid-based active targeting supramolecular nanoplatform improves long circulation and enhances cellular uptake in cancer therapy显示文摘Hyaluronic acid(HA) is a natural ligand of tumor-targeted drug delivery systems(DDS) due to the relevant CD44 receptor overexpressed on tumor cell membranes. However, other HA receptors(HARE and LYVE-1) are also overexpressing in the reticuloendothelial system(RES). Therefore,polyethylene glycol(PEG) modification of HA-based DDS is necessary to reduce RES capture.Unfortunately, pegylation remarkably inhibits tumor cellular uptake and endosomal escapement,significantly compromising the in vivo antitumor efficacy. Herein, we developed a Dox-loaded HA-based transformable supramolecular nanoplatform(Dox/HCVBP) to overcome this dilemma. Dox/HCVBP contains a tumor extracellular acidity-sensitive detachable PEG shell achieved by a benzoic imine linkage.The in vitro and in vivo investigations further demonstrated that Dox/HCVBP could be in a 'stealth' state at blood stream for a long circulation time due to the buried HA ligands and the minimized nonspecific interaction by PEG shell. However, it could transform into a 'recognition' state under the tumor acidic microenvironment for efficient tumor cellular uptake due to the direct exposure of active targeting ligand HA following PEG shell detachment. Such a transformative concept provides a promising strategy to resolve the dilemma of natural ligand-based DDS with conflicting two processes of tumor cellular uptake and in vivo nonspecific biodistribution. | Lu Zhong Lu Xu Yanying Liu Qingsong Li Dongyang Zhao Zhenbao Li Huicong Zhang Haotian Zhang Qiming Kan Yongjun Wang Jin Sun Zhonggui He | 2019 | Acta Pharmaceutica Sinica B2019，9，2： | 7 |
| 4 | AN ANISOTROPIC LOCKING-FREE NONCONFORMING TRIANGULAR FINITE ELEMENT METHOD FOR PLANAR LINEAR ELASTICITY PROBLEM显示文摘这份报纸的主要目的是学习 nonconforming 线性的三角形的 Crouzeix-Raviart 类型有各向异性的一般三角形的网孔上的纯排水量边界价值的平面线性弹性问题的有限元素近似令人满意最大的角度条件和坐标系统条件。精力标准和 L2 标准的最佳的顺序错误估计被获得,哪个独立于打敢愠搠癥 吗? | Dongyang Shi Chao Xu | 2012 | Journal of Computational Mathematics2012，30，2： | 7 |
| 5 | Influence of Tip Clearance on Performance of a Contra-Rotating Fan显示文摘Influences of tip clearance on the tip flow and associated loss mechanism in a contra-rotating axial flow fan hasbeen studied in the paper, based on three dimensional numerical results. The results with different tip clearanceare compared in terms of stage efficiency, relative total pressure loss coefficient, flow angle. It is found that theefficiency of the contra-rotating fan changes almost linearly with increment of the tip clearance, however, efficiencyof the rear rotor is observed to decrease more dramatically than that of the forward rotor given same tipclearance variation. The analysis on the flow structure indicates that the tip region flow field is qualitatively similarin both rotors. However, with the same clearance value, the leakage flow in the rear rotor is effected by a tipleakage vortex of greater intensity caused by relative loading levels and the inter rotor interaction. | Jian Xu Chunqing Tan Haisheng Chen Yangli Zhu Dongyang Zhang | 2009 | Journal of Thermal Science2009，18，3： | 6 |
| 6 | Tetra-alkylsulfonate functionalized poly(aryl ether) membranes with nanosized hydrophilic channels for efficient proton conduction显示文摘The microstructure of polymer electrolyte membranes plays a key role in ion conductivity and water transport.Herein,fluorinated poly(aryl ether)s with tetra-alkylsulfonate side chains(SFPAEs)have been successfully synthesized from the copolymerization of a newly developed tetra-allyl-containing bisphenol(TABP)monomer,followed by the thiol-ene addition with sodium 3-mercapto-1-propanesulfonate to attach the ionic groups at the end of the flexible chains.Being the first of its kind,the densely distributed and lengthy alkylsulfonate group possesses the benefit of ease to self-assemble into hydrophilic domains during membrane preparation via solution casting.Indeed,the TEM characterizations revealed that distinct hydrophilic channels of 1-2 nm width had been formed,much larger than those of a home-made control sample where only di-alkylsulfonate side chains were attached.The SFPAE-4-45 with an IECw of 2.0 mmol g^-1 exhibited an enhanced proton conductivity of 143.7 m S cm^-1 at room temperature,which was superior to that of Nafion 212(91.0 m S cm^-1).Furthermore,the oxidative stabilities of SFPAEs were significantly higher than those of non-fluorinated analogs in literature.This study offered a new route to engineering the pendent structure of ionomers for well-defined microscopic morphologies. | Lijun Zhou Junyang Zhu Meijin Lin Jiaqi Xu Zailai Xie Dongyang Chen | 2020 | Journal of Energy Chemistry2020，29，1： | 4 |
| 7 | Joint Dynamic Clustering and User Scheduling for Downlink Cloud Radio Access Network with Limited Feedback显示文摘In limited feedback-based CloudRAN(C-RAN) systems,the inter-cluster and intra-cluster interference together with the quantification error can seriously deteriorates the system spectral efficiency.We,in this paper,propose an efficient three-phase framework and corresponding algorithms for dealing with this problem.Firstly,a greedy scheduling algorithm based on the lower bound of the ergodic rate is performed for generating an elementary cluster in the first phase.And then the elementary cluster is divided into many small clusters according to the following proposed algorithms based on the short term instantaneous information in the second phase.In the end,based on the limited feedback two zero-forcing(ZF) precoding strategies are adopted for reducing the intra-cluster interference in the third phase.The provided Monte Carlo simulations show the effectiveness of our proposed algorithms in the respect of system spectral efficiency and average user rate. | XU Dongyang REN Pinyi DU Qinghe SUN Li | 2015 | China Communications2015，12，12： | 2 |
| 8 | Spatiotemporal patterns and influencing factors of human migration networks in China during COVID-19显示文摘The social lockdowns and strict control measures initiated to combat the COVID-19 pandemic have had an impact on human migration.In this study,big data was used to analyze spatial patterns of population migration in 369 Chinese cities during the COVID-19 outbreak and to identify determinants of population migration.We found that the overall migration intensity decreased by 39.87%compared to the same period in 2019 prior to the COVID-19 outbreak.COVID-19 severely affected human migration.The public holidays and weekends have impacted human migration from the perspective of time scale.The spatial pattern of China’s population distribution presents a diamond structure that is dense in the east and sparse in the west,which is bounded by the Hu line and the cities such as Beijing,Shanghai,Guangzhou and Chengdu as nodes to connect.There is a strong consistency between the population distribution center and the level of urban development.The urban human migration network is centered on provincial capitals or municipalities at the regional scale,showing a prominent'center-periphery'structure.COVID-19 dispersed the forces of human migration in time and changed the direction of human migration in space.But it did not change the pattern of national migration.The most critical factors influencing mass migration are income levels and traditional culture.This study reveals the impacts of major public health emergencies on conventional migration patterns and provides a scientific theoretical reference for COVID-19 prevention and control. | Debin Lu Wu Xiao Guoyu Xu Lin Ha Dongyang Yang | 2021 | Geography and Sustainability2021，2，4： | 2 |
| 9 | Low order nonconforming mixed finite element method for nonstationary incompressible Navier-Stokes equations显示文摘This paper studies a low order mixed finite element method(FEM) for nonstationary incompressible Navier-Stokes equations.The velocity and pressure are approximated by the nonconforming constrained Q^(rot)_1 element and the piecewise constant,respectively.The superconvergent error estimates of the velocity in the broken H^1-norm and the pressure in the L^2-norm are obtained respectively when the exact solutions are reasonably smooth.A numerical experiment is carried out to confirm the theoretical results. | Chao XU Dongyang SHI Xin LIAO | 2016 | Applied Mathematics and Mechanics(English Edition)2016，37，8： | 2 |
| 10 | Towards win-win: weighted-Voronoi-diagram based channel quantization for security enhancement in downlink cloud-RAN with limited CSI feedback显示文摘Physical layer(PHY) security is recently proved to enable improving the security of wireless communication networks. In downlink frequency division duplex(FDD) cloud radio access network(C-RAN), the performance of PHY security highly relies on the channel state information(CSI) which is usually acquired through the codebook-quantization-based technique at the transceiver. However, the conventional quantization method aggravates the leakage of privacy information in C-RAN under the eavesdropping environment. In this paper, a novel channel quantization method is investigated to improve the secrecy-rate performance of C-RAN by exploiting the high-dimension space geometry. Based on this method, it is proved that when the statistical distribution of the channel matrices of both the legitimate user and the eavesdropper is exploited, a win-win situation can be created where secrecy-rate gains are improved without sacrificing beamforming gains from the point of view of ergodic rate. Particularly, a secrecy-oriented criterion is devised to implement the proposed method for generating codebooks. Then a weighted Voronoi diagram(WVD) is formulated on the complex Grassmann manifold and finally, a vector quantization based algorithm is proposed to build up novel quantization codebooks iteratively. Simulation results further validate the superiority of our proposed codebooks over conventional codebooks in C-RAN systems. | Dongyang XU Pinyi REN Qinghe DU Li SUN Yichen WANG | 2017 | Science China(Information Sciences)2017，60，4： | 2 |
| 11 | Efficacy,safety and immunogenicity of hexavalent rotavirus vaccine in Chinese infants显示文摘A randomized,double-blind,placebo-controlled multicenter trial was conducted in healthy Chinese infants to assess the efficacy and safety of a hexavalent live human-bovine reassortant rotavirus vaccine(HRV)against rotavirus gastroenteritis(RVGE).A total of 6400 participants aged 6-12 weeks were enrolled and randomly assigned to either HRV(n?3200)or placebo(n?3200)group.All the subjects received three oral doses of vaccine four weeks apart.The vaccine efficacy(VE)against RVGE caused by rotavirus serotypes contained in HRV was evaluated from 14 days after three doses of administration up until the end of the second rotavirus season.VE against severe RVGE,VE against RVGE hospitalization caused by serotypes contained in HRV,and VE against RVGE,severe RVGE,and RVGE hospitalization caused by natural infection of any serotype of rotavirus were also investigated.All adverse events(AEs)were collected for 30 days after each dose.Serious AEs(SAEs)and intussusception cases were collected during the entire study.Our data showed that VE against RVGE caused by serotypes contained in HRV was 69.21%(95%CI:53.31-79.69).VE against severe RVGE and RVGE hospitalization caused by serotypes contained in HRV were 91.36%(95%CI:78.45-96.53)and 89.21%(95%CI:64.51-96.72)respectively.VE against RVGE,severe RVGE,and RVGE hospitalization caused by natural infection of any serotype of rotavirus were 62.88%(95%CI:49.11-72.92),85.51%(95%CI:72.74-92.30)and 83.68%(95%CI:61.34-93.11).Incidences of AEs from the first dose to one month post the third dose in HRV and placebo groups were comparable.There was no significant difference in incidences of SAEs in HRV and placebo groups.This study shows that this hexavalent reassortant rotavirus vaccine is an effective,well-tolerated,and safe vaccine for Chinese infants. | Zhiwei Wu Qingliang Li Yan Liu Huakun Lv Zhaojun Mo Fangjun Li Qingchuan Yu Fei Jin Wei Chen Yong Zhang Teng Huang Xiaosong Hu Wei Xia Jiamei Gao Haisong Zhou Xuan Bai Yueyue Liu Zhenzhen Liang Zhijun Jiang Yingping Chen Jiuwei Zhang Jialiang Du Biao Yang Bo Xing Yantao Xing Ben Dong Qinghai Yang Chen Shi Tingdong Yan Bo Ruan Haiyun Shi Xingliang Fan Dongyang Feng Weigang Lv Dong Zhang Xiangchu Kong Liuyifan Zhou Dinghong Que Hong Chen Zhongbing Chen Xiang Guo Weiwei Zhou Cong Wu Qingrong Zhou Yuqing Liu Jian Qiao Ying Wang Xinguo Li Kai Duan Yuliang Zhao Gelin Xu Xiaoming Yang | 2022 | Virologica Sinica2022，37，5： | 2 |
| 12 | Silver-coated elevated bowtie nanoantenna arrays: Improving the near-field enhancement of gap cavities for highly active surface-enhanced Raman scattering显示文摘改进热点紧张是在散布的提高表面的拉曼(重量的单位) 的一个关键问题。bowtie nanoantenna (BNA ) 是过去常集中光能进 nanoscale 卷并且生产强壮的热点的一台有效设备。Nanosphere 平版印刷术(NSL ) 是一种大区域、便宜的技术生产 BNA 数组;然而,制作 NSL 的 BNA 的 SERS 活动是有限的。在这份报纸,我们在场由修改他们的几何学改进常规制作 NSL 的 BNA 的 SERS 活动的一个简单方法。新配置被称为银涂的提高的 bowtie nanoantenna (SCEBNA ) 。SCEBNA 由于闪电杆效果,联合的回声,和 plasmonic FabryP 的形成的综合贡献在差距洞执行集中的近地的改进 ? 楷桴吗? | Lei Feng Renping Ma Yandong Wang Daren Xu Dongyang Xiao Lingxiao Liu Nan Lu | 2015 | Nano Research2015，8，11： | 1 |
| 13 | Modeling studies on sulfur deposition and transport in East Asia显示文摘 | Huang Meiyuan Wang Zifa He Dongyang Xu Huaying Zhou Ling | 1995 | Water Air & Soil Pollution1995，，4： | 1 |
| 14 | Pediatric idiopathic intervertebral disc calcification of the cervical spine显示文摘To the Editor:Pediatric idiopathic intervertebral disc calcification(PIIVDC)is a rare childhood disease characterized by calcification of the intervertebral disc and can progress to inflammation or extrusion.[1]The cause of intervertebral disk calcification in children remains unclear.Increasing inflammation and extrusion can eventually lead to neck or spinal pain in some patients.Most reported cases are asymptomatic or mildly symptomatic,and the diagnosis is largely incidental.PIIVDC is thought to be self-limited with favorable outcomes even when treated conservatively by immobilizing the spine and using analgesic therapy.[2]However,there are no gold guidelines for the treatment of this disease at present.[3]In this study,we reported 12 children with cervical disc calcification who presented to our hospital,nine of whom received non-interventional treatment with satisfactory outcomes,in an attempt to outline the presentation,clinical features,and clinical management of this rare disease. | Jia Liu Jinhao Miao Dongyang Niu Chao Guo Xiaogang Bao Guohua Xu | 2022 | Chinese Medical Journal2022，，13： | 1 |
| 15 | Changes in biochemical and microbiological parameters during the period of rapid composting of dairy manure with rice chaff显示文摘 | Dongyang Liu Ruifu Zhang Hongsheng Wu Dabing Xu Zhu Tang Guanghui Yu Zhihui Xu Qirong Shen | 2011 | Bioresource Technology2011，，19： | 1 |
| 16 | Exploring the relationship of hyaluronic acid molecular weight and active targeting efficiency for designing hyaluronic acid-modified nanoparticles显示文摘Although it is reported that the targeting ability of hyaluronic acid(HA)-based nanoparticles(NPs) is molecular weight(MW) dependent,the influence of HA MW on targeting efficiency of HA-functionalized NPs and the underlying mechanism remain elusive. In this study,we constituted three HA-functionalized Dox-loaded NPs(Dox/HCVs) different HA MWs(7,63,and 102 k Da) and attempted to illustrate the effects of HA MW on the targeting efficiency.The three Dox/HCVs had similar physiochemical and pharmaceutical characteristics,but showed different affinity to CD44 receptor. Furthermore,Dox/HCV-63 exerted the best targeting effect and the highest cytotoxicity compared with Dox/HCV-7 and Dox/HCV-102. It was interesting to found that both the HA-CD44 binding affinity and induced CD44 clustering by HA-based NPs were HA MW-dependent,the two of which determine the apparent targeting efficacy of Dox/HCV NPs in the conflicting directions. Those results laid a good foundation for rationally designing HA-based NPs in cancer therapy. | Lu Zhong Yanying Liu Lu Xu Qingsong Li Dongyang Zhao Zhenbao Li Huicong Zhang Haotian Zhang Qiming Kan Jin Sun Zhonggui He | 2019 | Asian Journal of Pharmaceutical Sciences2019，14，5： | 1 |
| 17 | Synthesis of surface sulfated BiWO with enhanced photocatalytic performance显示文摘Sulfated BiWO(SBiWO)was synthesized by an impregnation method to enhance the visible-light-driven photoactivities of BiWO(BiWO).The characterization results verified that sulfate anion mainly anchored on the catalyst surface greatly extended the visiblelight-responsive range without destroying the crystal lattice.Moreover,the SBiWO-based photoactivities were evaluated with the removal of Malachite Green(MG)under UV-Vis irradiation emitted from two microwave-powered electrodeless discharge lamps(MPEDL-2)and under visible light(λ>420nm).The results demonstrated that the kinetic constant was increased 2.25 times,varying from 0.1478(BiWO)to 0.3328min-1(SBiWO-1).Similar results were also obtained for the visible light-driven reaction.Furthermore,radical scavengers such as t-butanol restricted the visible-light induced degradation of MG over BiWO and SBiWO-1.This indicated that the sulfating process increased the generation of reactive oxygen species,which was further verified by molecular probe with salicylic acid.Thus,more blue-shifting at λ=618nm was observed over SBiWO.On the basis of the above results,the photocatalytic mechanism over the sulfated catalyst was also discussed. | Yongming Ju Jianming Hong Xiuyu Zhang Zhencheng Xu Dongyang Wei Yanhong Sang Xiaohang Fang Jiande Fang Zhenxing Wang | 2012 | Journal of Environmental Sciences2012，24，12： | 1 |
| 18 | AS1DHRS4, a head-to-head natural antisense transcript, silences the DHRS4 gene cluster in cis and trans显示文摘 | Qi Li Zhongjing Su Xiaoyuan Xu Gefei Liu Xuhong Song Ruijian Wang Xuxia Sui Ting Liu Xiaolan Chang Dongyang Huang | 2012 | Proceedings of the National Academy of Sciences2012，，35： | 1 |
| 19 | Widely linear MVDR beamformers for noncircular signals based on time-averaged second order noncircularity coefficient Estimation显示文摘 | Xu Dongyang Huang Lei Xu Xu | 2014 | IEEE Transaction on Vehicular Technology2014，62，7： | 1 |
| 20 | CollectCast: A Peer-to-Peer Service for Media Streaming显示文摘 | Hefeeda M Habib A Xu Dongyang | 2005 | Multimedia Systems2005，11，1： | 1 |
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