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1GPS-constrained inversion of present-day slip rates along major faults of the Sichuan-Yunnan region, China显示文摘A linked-fault-element model is employed to invert for contemporary slip rates along major active faults in the Sichuan-Yunnan region (96°-108°E, 21°-35°N) using the least squares method. The model is based on known fault geometry, and constrained by a GPS-derived horizontal velocity field. Our results support a model attributing the eastward extrusion of the Tibetan Plateau driven mainly by the north-northeastward indentation of the Indian plate into Tibet and the gravitational collapse of the plateau. Resisted by a relatively stable south China block, materials of the Sichuan-Yunnan region rotate clockwise around the eastern Himalayan tectonic syntaxis. During the process the Garzê-Yushu, Xianshuihe, Anninghe, Zemuhe, Daliangshan, and Xiaojiang faults, the southwest extension of the Xiaojiang fault, and the Daluo-Jinghong and Mae Chan faults constitute the northeast and east boundaries of the eastward extrusion, with their left slip rates being 0.3-14.7, 8.9-17.1, 5.1 ± 2.5, 2.8 ± 2.3, 7.1 ± 2.1, 9.4 ± 1.2, 10.1 ± 2.0, 7.3 ± 2.6, and 4.9 ± 3.0 mm/a respectively. The southwestern boundary consists of a widely distributed dextral transpressional zone other than a single fault. Right slip rates of 4.2 ± 1.3, 4.3 ± 1.1, and 8.5 ± 1.7 mm/a are detected across the Nanhua-Chuxiong-Jianshui, Wuliangshan, and Longling-Lancang faults. Crustal deformation across the Longmenshan fault is weak, with short-ening rates of 1.4 ± 1.0 and 1.6 ± 1.3 mm/a across the Baoxing-Beichuan and Beichuan-Qingchuan segments. Northwest of the Longmenshan fault lies an active deformation zone (the Longriba fault) with 5.1±1.2 mm/a right slip across. Relatively large slip rates are detected across a few faults within the Sichuan-Yunnan block: 4.4±1.3 mm/a left slip and 2.7±1.1 mm/a shortening across the Litang fault, and 2.7±2.3 mm/a right-lateral shearing and 6.7±2.3 mm/a shortening across the Yunongxi fault and its surrounding regions. In conclusion, we find that the Sichuan-Yunnan region is divided into more than a dozen active micro-blocks by a large number of faults with relatively slow slip rates. The eastward extrusion of the Tibetan Plateau is absorbed and adjusted in the region mainly by these faults, other than a small number of large strike-slip faults with fast slip rates.WANG YanZhao WANG EnNing SHEN ZhengKang WANG Min GAN WeiJun QIAO XueJun MENG GuoJie LI TieMing TAO Wei YANG YongLin CHENG Jia LI Peng 2008Science China Earth Sciences2008,51,9:65
2Relief degree of land surface and its influence on population distribution in China显示文摘陆地表面(RDLS ) 的消除度是为在宏规模描述地形的一个重要因素。这研究为 RDLS 定义一个概念并且为全部国家的人口分发学习使用这个概念。FENG Zhiming TANG Yan YANG Yanzhao ZHANG Dan 2008Journal of Geographical Sciences2008,18,2:36
3Deep structure beneath the southwestern section of the Longmenshan fault zone and seimogenetic context of the 4.20 Lushan M_S7.0 earthquake显示文摘Magnetotelluric measurements were carried out along two profiles across the middle and southwestern sections of the Longmenshan fault zone(LMSf)from 2009 to 2011,after the 2008 Wenchuan MW7.9 earthquake.The former profile crosses the Wenchuan event epicenter and the latter one crosses 2013 Lushan MS7.0 event epicenter.The data were analyzed using advanced processing techniques,including phase tensor and two-dimensional inversion methods,in order to obtain reliable 2-D profiles of the electrical structure in the vicinity of the two earthquakes.A comparison of the two profiles indicates both similarities and differences in the deep crustal structure of the LMSf.West of the southwestern section,a crustal high conductivity layer(HCL)is present at about 10 km depth below the Songpan-Garzêblock;this is about 10 km shallower than that under the middle section of the LMSf.A high resistivity body(HRB)is observed beneath the southwestern section,extending from the near surface to the top of upper mantle.It has a smaller size than the HRB observed below the middle section.In the middle section,there is a local area of decreased resistivity within the HRB but there is absence of this area.The 2013 Lushan earthquake occurred close to the eastern boundary of HRB and the Shuangshi-Dachuan fault,of which the seismogenic context has both common and different features in comparison with the 2008 Wenchuan event.On a large scale,the 2013 Lushan earthquake is associated with the HCL and deformation in the crust including HCL of the eastern Tibetan Plateau.In order to assess seismic risk,it is important to consider both the stress state and the detailed crustal structure in different parts of the LMSf.ZHAN Yan ZHAO GuoZe UNSWORTH Martyn WANG LiFeng CHEN XiaoBin LI Tao XIAO QiBin WANG JiJun TANG Ji CAI JunTao WANG YanZhao 2013Chinese Science Bulletin2013,58,28:39
4Far-field coseismic displacements associated with the 2011 Tohoku-oki earthquake in Japan observed by Global Positioning System显示文摘Analysis of GEONET observations covering the entire territory of Japan shows that the great Tohoku-oki earthquake that occurred on March 11, 2011 off the east coast of Honshu in Japan caused an eastward movement of the northern part of the island by as much as 5.3 m. The GPS data from TEONET in China were used to derive far-field coseismic displacements and to assess the impact of the Tohoku-oki earthquake on crustal deformation in eastern China. The results reveal that the coseismic horizontal displacements induced by the earthquake are the level of millimeters to centimeters in North and Northeast China, with a maximum of 35 mm. Strain analysis also indicates that the earthquake resulted in an increase in the tensile strain on the north-northeast trending faults in North and Northeast China. The tensile strain imposed on the Yilan-Yitong and Dunhua-Mishan faults is more significant than that imposed on the faults in North China; the maximum normal strain reaches about 40 nano-strain. Considering that the static Coulomb stress loaded on the faults is limited, its effect on the regional seismic activity may not be significant.WANG Min LI Qiang WANG Fan ZHANG Rui WANG YanZhao SHI HongBo ZHANG PeiZhen SHEN ZhengKang 2011Chinese Science Bulletin2011,56,23:34
5RRR-α-tocopheryl succinate inhibits human gastric cancer SGC-7901 cell growth by inducing apoptosis and DNA synthesis arrest显示文摘AIM:To investigate the effects of growth inhibition ofhuman gastric cancer SGC-7901 cell with RRR-α-tocopherylsuccinate(VES),a derivative of natural Vitamin E,viainducing apoptosis and DNA synthesis arrest.METHODS:Human gastric cancer SGC-7901 cells wereregularly incubated in the presence of VES at 5,10 and20mg.L^(-1)(VES was dissolved in absolute ethanol anddiluted in RPMI 1640 complete condition mediacorrespondingly to a final concentration of VES and lmL.L^(-1)ethanol),succinic acid and ethanol equivalents asvehicle(VEH)control and condition-media only asuntreated(UT)control.Trypan blue dye exclusionanalysis and MTT assay were applied to detect the cellproliferation.37kBq of tritiated thymidine was added tocells and [~3H]TdR uptake was measured to observe DNAsynthesis.Apoptotic morphology was observed byelectron microscopy and DAPI staining.Flow cytometryand terminal deoxynucleotidyl transferase-mediated dUTPnick end labeling(TUNEL)assay were performed to detectVES-triggered apoptosis.RESULTS:VES inhibited SGC-7901 cell growth in a dose-dependent manner.The growth curve showed suppressionby 24.7%,49.2% and 68.7% following 24h of VEStreatment at 5,10 and 20 mg·L^(-1),respectively,similar tothe findings from MTT assay.DNA synthesis wasevidently reduced by 35%,45% and 98% after 24h VEStreatment at 20 mg·L^(-1)and 48h at 10 and 20 mg·L^(-1),respectively.VES induced SGC-7901 cells to undergoapoptosis with typically apoptotic characteristics,including morphological changes of.chromatincondensation,chromatincrescent formation/margination,nucleus fragmentation and apoptotic body formation,typical apoptotic sub-G1 peak by flow cytometry andincrease of apoptotic cells by TUNEL assay in which 90%of cells underwent apoptosis after 48h of VES treatment at20 mg·L^(-1).CONCLUSION:VES can inhibit human gastric cancer SGC-7901 cell growth by inducing apoptosis and DNA synthesisarrest,inhibition of SGC-7901 cell growth by VES is dose-and time-dependent.Therefore VES can function as apotent chemotherapeutic agent against human gastric carcinogenesis.KunWk YanZhao2002World Journal of Gastroenterology2002,8,1:29
6Spatial patterns of ecological carrying capacity supply-demand balance in China at county level显示文摘一个平衡生态的带的能力和它的理解是重要的为人的类型完成持续开发。这里,生态的带的能力的概念被用于测量在人和自然之间的相关性。在供应和需求之间的瓷器生态的平衡成为了一颗全球担心并且广泛地被辩论。在这研究,生态的脚印方法被用来生态的带分析瓷器的供应要求平衡能力。第一,生态的供应和需求平衡计算、评估,并且第二,生态的带能力索引(ECCI ) 在 2007 为中国的每个县被导出,并且最后,这份报纸系统地评估了中国的生态的带能力供应要求平衡。结果证明生态的赤字看起来是在在县规模的 2007 中国的生态的带的能力供应要求平衡的主要特征。一般来说,超过五分之四张中国人口在不到三分之一个个陆地区域和超过三分之二个陆地区域被集中被不到五分之一个张人口住在。生态的带能力要求供应的空间分发被失衡从到富裕的重要过载从对中国的西北的部分东南。它看起来在在被候鸟吸引并且有通常更高的人口密度的沿海的区域定位的区域更主导。与在中国的快速的发展和都市化趋势一起,在这些区域的生态的赤字将变得更严重。LIU Dong FENG Zhiming YANG Yanzhao YOU Zhen 2011Journal of Geographical Sciences2011,21,5:27
7Rubber plantation and its relationship with topographical factors in the border region of China, Laos and Myanmar显示文摘橡胶种植园是在东南亚洲的主要陆地使用类型。监视橡胶种植园的空间时间的模式为地区性的陆地资源开发, eco 环境的保护,和维持的边阶安全是重要的。与遥感技术,我们分析了橡胶分发模式并且空间时间动态;与 GIS 和种的紧张(PI ) 的一个最新建议的索引一起,我们进一步确定了在在 1980 和 2010 之间的中国,老挝和 Myanmar (BRCLM ) 的边阶区域的橡胶种植园上的地形学的因素的影响和限制。结果显示出那:(1 ) 作为在这的主导的陆地使用类型毗邻区域,橡胶种植园的面积是在 2010 的 6014 km2,为 8.17% 全部的区域的财务。从橡胶种植园结构看,比率成熟 --(10 年) 并且年轻橡胶种植园(< 10 年) 是 5:7。(2 ) 从 1980 ~ 2010,在 BRCLM 显著地扩展的橡胶种植园,从 705 km2 到 6014 km2,将近九次。橡胶种植园的分发特征变化了从专注向分散,从在内的边阶到外面,并且作为中心与 Jinghong 城市在所有方向进一步膨胀了。(3 ) 由地形学的因素限制了,多于在在 600 和 1000 m 之间的适当举起坡度集中的橡胶种植园的 4/5 比例,很少在 BRCLM 在 1200 m 以外发生在举起。将近橡胶种植园的 2/3 专注于 8 的斜坡吗?LIU xiaona FENG Zhiming JIANG Luguang LI Peng LIAO Chenhua YANG Yanzhao YOU Zhen 2013Journal of Geographical Sciences2013,23,6:17
8High-Chern-number and high-temperature quantum Hall effect without Landau levels显示文摘The quantum Hall effect(QHE)with quantized Hall resistance ofh/ve2 started the research on topological quantum states and laid the foundation of topology in physics.Since then,Haldane proposed the QHE without Landau levels,showing nonzero Chern number|C|=1,which has been experimentally observed at relatively low temperatures.For emerging physics and low-power-consumption electronics;the key issues are how to increase the working temperature and realize high Chern numbers(C>1).Here,we report the experimental discovery of high-Chern-number QHE(C=2)without Landau levels and C=1 Chern insulator state displaying a nearly quantized Hall resistance plateau above the Neel temperature in MnBi2Te4 devices.Our observations provide a new perspective on topological matter and open new avenues for exploration of exotic topological quantum states and topological phase transitions at higher temperatures.Jun Ge Yanzhao Liu Jiaheng Li Hao Li Tianchuang Luo Yang Wu Yong Xu Jian Wang 2020National Science Review2020,7,8:10
9Start-up current adaptive control for sensorless high-speed brushless DC motors based on inverse system method and internal mode controller显示文摘The start-up current control of the high-speed brushless DC(HS-BLDC) motor is a challenging research topic. To effectively control the start-up current of the sensorless HS-BLDC motor, an adaptive control method is proposed based on the adaptive neural network(ANN)inverse system and the two degrees of freedom(2-DOF) internal model controller(IMC). The HS-BLDC motor is identified by the online least squares support vector machine(OLS-SVM) algorithm to regulate the ANN inverse controller parameters in real time. A pseudo linear system is developed by introducing the constructed real-time inverse system into the original HS-BLDC motor system. Based on the characteristics of the pseudo linear system, an extra closed-loop feedback control strategy based on the 2-DOF IMC is proposed to improve the transient response performance and enhance the stability of the control system. The simulation and experimental results show that the proposed control method is effective and perfect start-up current tracking performance is achieved.He Yanzhao Zheng Shiqiang Fang Jiancheng 2017Chinese Journal of Aeronautics2017,30,1:9
10The change in population density from 2000 to 2010 and its influencing factors in China at the county scale显示文摘在人口分发和密度学习变化能为地区性的开发提供重要基础并且计划。空间模式和在在中国的人口密度的变化的开车因素还不是清楚的。用在 2000 和 2010 的人口普查数据,因此,这研究第一在中国分析了人口密度的变化并且在所有 2353 个县把变化划分了成 4 种类型,由快速的增加,慢增加,慢减少和快速的减少组成。随后,基于部分最少的平方(请) 回归方法,我们认出了重要因素(在 11 个自然、社会经济的因素之中) 为有人口变化的不同类型的整个国家和县的影响人口密度变化。结果显示出那:( 1 )在 2010 ,与在 2000 的人口密度相比,在大多数县(超过60%)的人口密度每 km 由 21 个人增加了<啜class=“ a-plus-plus ”> 2 平均,当在另外的县的人口密度每 km 由 13 个人减少了时<啜class=“ a-plus-plus ”> 2 。所有 2353 个县,当 458 和 446 个县分别地在人口密度显示出慢、快速的减少时, 860 和 589 个县分别地在人口密度显示出快速、慢的增加。(2 ) 在 11 个因素之中,社会经济的因素比自然因素更显著地影响了人口密度变化。更高经济的发展水平,更好医药的条件和更强壮的通讯能力是人口增加的主要的拉因素。稠密的人口密度是人口减少的主要的推因素。这些结论在过去的 10 年在中国澄清了人口变化和它的影响因素的空间模式并且能为计划的未来人口提供有用参考。WANG Lu FENG Zhiming YANG Yanzhao 2015Journal of Geographical Sciences2015,25,4:8
11The past, present, and future of population geography in China:Progress, challenges and opportunities显示文摘人口地理(PopGeo ) 人的地理的一个学科的分支,应该很好考虑到它的国家人口在中国被开发了尺寸和唯一的人口统计的问题,地区性的社会经济的发展,和生物物理的差别。然而,它典型地落后于它的父母学科,特别人口统计学和地理的发展。明确地,在中国高等教育的 PopGeo 以纪律开发的三个主要方面仍然在底层:为高等教育,学术会议,和杂志的学术学生。在中国的 PopGeo 的研究内容在中央空间、宏空间的规模集中了于人口的生长,作文,变化,分发,和带的能力。作为在世界上的大多数占据土地,在人口安定并且移居到的地方,关于人口怎么并且为什么,并且怎么指导人口物质的健全开发到社会和经济变化询问,它的最大的带能力,总是是在在中国的 PopGeo 研究的重要话题。相反,一些新人口现象象人的时空行为那样(变换,汇款,和朋友相互作用) ,在在国外的科学界流行,充分没被调查在微水平。一会儿,因为富饶政策和国家新都市化计划的实现的调整,在中国的 PopGeo 可以在国家水平面对挑战和机会。是这个场合自从 1980 年代,要求 PopGeo 的开发的最先进的评论,越来越多的 PopGeo 的转弯的点在中国学习。我们试图在中国揭示 PopGeo 的当前的地位到世界,并且使它的进一步的学习清楚些。FENG Zhiming LI Fangzhou YANG Yanzhao LI Peng 2017Journal of Geographical Sciences2017,27,8:8
12SDN Based Next Generation Mobile Network With Service Slicing and Trials显示文摘Software-Defined Network(SDN)empowers the evolution of Internet with the OpenFlow,Network Virtualization and Service Slicing strategies.With the fast increasing requirements of Mobile Internet services,the Internet and Mobile Networks go to the convergence.Mobile Networks can also get benefits from the SDN evolution to fulfill the Sth Generation(5G) capacity booming.The article implements SDN into Frameless Network Architecture(FNA) for5G Mobile Network evolution with proposed Mobile-oriented OpenFlow Protocol(MOFP).The Control Plane/User Plane(CP/UP)separation and adaptation strategy is proposed to support the User-Centric scenario in FNA.The traditional Base Station is separated with Central Processing Entity(CPE) and Antenna Element(AE) to perform the OpenFlow and Network Virtualization.The AEs are released as new resources for serving users.The mobile-oriented Service Slicing with different Quality of Service(QoS) classification is proposed and Resource Pooling based Virtualized Radio Resource Management(VRRM) is optimized for the Service Slicing strategy with resource-limited feature in Mobile Networks.The capacity gains are provided to show the merits of SDN based FNA.And the MiniNet based Trial Network with Service Slicing is implemented with experimental results.XU Xiaodong ZHANG Huixin DAI Xun HOU Yanzhao TAO Xiaofeng ZHANG Ping 2014China Communications2014,11,2:7
13Tensor force effect on proton shell structure in neutron-rich Ca isotopes显示文摘In the framework of the Skyrme-Hartree-Fock approach with 36 sets of the TI J parameterizations,the tensor force effect on the evolution of the single-proton states in the calcium isotopes is systematically investigated.It is shown that the single-proton states with higher angular momenta are influenced significantly by the tensor force and the trend in the evolution of somesingle-particle energy differences with the mass number of the isotopes depends sensitively on a parameter βT associated with the intensity of the tensor force.To understand this phenomenon,we analyze the spin-orbit potentials and the radial wave functions of relevant single-proton orbits in detail.In addition,it is found that some TI J interactions could cause the 2s1/21d3/2 energy level inversion in 48Ca.LI ZhenYu WANG YanZhao YU GuoLiang GU JianZhong 2013Science China(Physics,Mechanics & Astronomy)2013,56,9:7
14High-resolution, full-color quantum dot light-emitting diode display fabricated via photolithography approach显示文摘Displays play an extremely important role in modern information society,which creates a never-ending demand for the new and better products and technologies.The latest requirements for novel display technologies focus on high resolution and high color gamut.Among emerging technologies that include organic light-emitting diode(OL ED),micro light-emiting diode(micro-LED),quantum dot light-emitting diode(QLED),laser display,holographic display and others,QLED is promising owing to its intrinsic high color gamut and the possibility to achieve high resolution with photolithography approach.However,previously demonstrated photolthography techniques suffer from reduced device performance and color Impurities in subpixels from the process.In this study,we demonstrated a sacrificial layer assisted patterming(SLAP)approach,which can be applied in conjunction with photolithography to fabricate high-resolution,full-colo quantum dot(QD)patterns.In this approach,the negative photoresist(PR)and sacrificial layer(SL)were uilized to determine the pixels for QD deposition,while at the same time the SL helps protect the QD layer and keep it intact(named PR-SL approach).To prove this method's viability for QLED display manufacture,a 500-ppi,full-color passive matrix(PM)-QLED prototype was fabricated via this process.Results show that there were no color impurities in the subpixels,and the PM-QL ED has a high color gamut of 114%National Television Standards Committee(NTSC).To the best of our knowledge,this is the first ull-olor QLED prototype with such a high resolution.We anticipate that this innovative patteming technique will open a new horizon for future display technologies and may lead to a disruptive and innovative change in display industry.Wenhai Mei Zhenqi Zhang Aidi Zhang Dong Li Xiaoyuan Zhang Haowei Wang Zhuo Chen Yanzhao Li Xinguo Li Xiaoguang Xu 2020Nano Research2020,13,9:6
15Effect of Sinai San decoction on the development of non-alcoholic steatohepatitis in rats显示文摘AIM: To explore the effect of Sinai san decoction on the development of non-alcoholic steatohepatitis induced by CCL4 combined with a fat-rich diet in rats.METHODS: Twenty-seven Sprague-Dawley rats were divided into three groups randomly: control group (n = 9),model group (n = 9) and treatment group (n = 9). The rats of model group and treatment group were given small dosage of CCL4 combined with a fat-rich diet, andthose of control group were given normal diet. After four weeks of fat-rich diet feeding, the rats of treatment group were given Sinai san decoction. The serum levels of aminotransferase and lipid were measured, and the pathology of livers was observed by HE staining after the rats were sacrificed at eight weeks.RESULTS: The rats' livers presented the pathology of steatosis and inflammation with higher serum levels of ALT and AST in the model group. In the treatment group the serum ALT and AST levels decreased significantly and were close to the control group. The hepatic inflammation scores also decreased markedly, but were still higher than those of control group. And the degree of hepatocyte steatosis was similar to that of model group.CONCLUSION: Sinai san decoction may ameliorate the hepatic inflammation of rats with steatohepatitis induced by small dosage of CCL4 combined with a fat-rich diet,but does not prevent the development of hepatocyte steatosis.QiZhang YanZhao Deng-BenZhang Li-JunSun 2005World Journal of Gastroenterology2005,11,9:6
16In situ observation and thermodynamic calculation of MnS in 49MnVS3 non-quenched and tempered steel显示文摘Based on thermodynamics calculation, the results of the formation temperature of MnS inclusions of non-quenched and tempered steel during heating process were discussed. It is shown that while the solid fraction is 0.9, MnS inclusions began to precipitate in the final stage of solidification. The solidification process of 49MnVS3 non-quenched and tempered steel during heating has been observed in situ using a confocal scanning laser microscope (CSLM), which agrees well with the thermodynamics calculation. MnS particles were coarsening during heating process, which would reduce the pinning effect on the austenite grain boundaries and bring about the sudden growth of some austenite grains in this stage.Yanzhao LUO Jiongming ZHANG Zhiming LIU ChaoXIAO Suzhou WU 2011Acta Metallurgica Sinica(English Letters)2011,24,4:6
17Research on the suitability of population distribution at the provincial scale in China显示文摘在人口分发和资源,环境和社会经济的开发之间的关系在人的发展有重要影响。这篇论文建立了一套索引为对在人口和资源,环境和社会经济的开发之间的协作的评价的系统和模型方法,并且它份量上分别地在 2000 和 2010 在省的规模评估了这协作。在省的规模基于索引系统,适用性度和人口分发的空间时间的模式的这个集合小心地被描绘。在省的规模的人口分发的限制被分级并且分类,并且人口,资源,环境和社会经济的协调发展策略最后被提出。结果显示出那:(1 ) 在省的规模的人口分发的环境适用性在中国通常高,它趋于从 2000 ~ 2010 稳定。(2 ) 在省的规模的水和陆地资源的限制在中国通常是强壮的,但是它趋于从 2000 ~ 2010 弱。(3 ) 在在省的规模的社会经济的发展和人口分发之间的协作度主要在中间的水平,它在从 2000 ~ 2010 的积极向上的路径。(4 ) 在省的规模的人口分发的适用性主要在中间的水平,所有哪个从 2000 ~ 2010 正在升起。(5 ) 在在省的规模的人口分发和资源,环境和社会经济的开发之间的协作度被划分成四个等级,包括基本协作,相对协作,等候的协作和迫切需要的协作。(6 ) 在中国在不同区域支持人口,资源和环境的协调发展的基本方法能是被总结:实现人口凝块和撤退的策略,指导人口的有序的流动,优化人口的空间分发并且起草人口开发的空间计划。YANG Yanzhao FENG Zhiming WANG Lu YOU Zhen 2014Journal of Geographical Sciences2014,24,5:5
18Construction of a small-caliber tissue-engineered blood vessel using icariin-loaded β-cyclodextrin sulfate for in situ anticoagulation and endothelialization显示文摘The rapid endothelialization of tissue-engineered blood vessels(TEBVs) can effectively prevent thrombosis and inhibit intimal hyperplasia. The traditional Chinese medicine ingredient icariin is highly promising for the treatment of cardiovascular diseases.β-cyclodextrin sulfate is a type of hollow molecule that has good biocompatibility and anticoagulation properties and exhibits a sustained release of icariin. We studied whether icariin-loaded β-cyclodextrin sulfate can promote the endothelialization of TEBVs. The experimental results showed that icariin could significantly promote the proliferation and migration of endothelial progenitor cells; at the same time, icariin could promote the migration of rat vascular endothelial cells(RAVECs). Subsequently,we used an electrostatic force to modify the surface of the TEBVs with icariin-loaded β-cyclodextrin sulfate, and these vessels were implanted into the rat common carotid artery. After 3 months, micro-CT results showed that the TEBVs modified using icariin-loaded β-cyclodextrin sulfate had a greater patency rate. Scanning electron microscopy(SEM) and CD31 immunofluorescence results showed a better degree of endothelialization. Taken together, icariin-loaded β-cyclodextrin sulfate can achieve anticoagulation and rapid endothelialization of TEBVs to ensure their long-term patency.Jingyuan Yang Keyu Wei Yeqin Wang Yanzhao Li Ning Ding Da Huo Tianran Wang Guanyuan Yang Mingcan Yang Tan Ju Wen Zeng Chuhong Zhu 2018Science China(Life Sciences)2018,61,10:5
19Deterministic Approach to Achieve Full-Polarization Cloak显示文摘Achieving full-polarization(σ)invisibility on an arbitrary three-dimensional(3D)platform is a long-held knotty issue yet extremely promising in real-world stealth applications.However,state-of-the-art invisibility cloaks typically work under a specific polarization because the anisotropy and orientation-selective resonant nature of artificial materials made theσ-immune operation elusive and terribly challenging.Here,we report a deterministic approach to engineer a metasurface skin cloak working under an arbitrary polarization state by theoretically synergizing two cloaking phase patterns required,respectively,at spin-up(σ+)and spin-down(σ−)states.Therein,the wavefront of any light impinging on the cloak can be well preserved since it is a superposition ofσ+andσ−wave.To demonstrate the effectiveness and applicability,several proof-of-concept metasurface cloaks are designed to wrap over a 3D triangle platform at microwave frequency.Results show that our cloaks are essentially capable of restoring the amplitude and phase of reflected beams as if light was incident on a flat mirror or an arbitrarily predesigned shape under full polarization states with a desirable bandwidth of~17.9%,conceiving or deceiving an arbitrary object placed inside.Our approach,deterministic and robust in terms of accurate theoretical design,reconciles the milestone dilemma in stealth discipline and opens up an avenue for the extreme capability of ultrathin 3D cloaking of an arbitrary shape,paving up the road for real-world applications.He-Xiu Xu Yanzhao Wang Chaohui Wang Mingzhao Wang Shaojie Wang Fei Ding Yongjun Huang Xiaokuan Zhang Haiwen Liu Xiaohui Ling Wei Huang 2021Research2021,,1:5
20Joint Allocation of Wireless Resource and Computing Capability in MEC-Enabled Vehicular Network显示文摘In MEC-enabled vehicular network with limited wireless resource and computation resource,stringent delay and high reliability requirements are challenging issues.In order to reduce the total delay in the network as well as ensure the reliability of Vehicular UE(VUE),a Joint Allocation of Wireless resource and MEC Computing resource(JAWC)algorithm is proposed.The JAWC algorithm includes two steps:V2X links clustering and MEC computation resource scheduling.In the V2X links clustering,a Spectral Radius based Interference Cancellation scheme(SR-IC)is proposed to obtain the optimal resource allocation matrix.By converting the calculation of SINR into the calculation of matrix maximum row sum,the accumulated interference of VUE can be constrained and the the SINR calculation complexity can be effectively reduced.In the MEC computation resource scheduling,by transforming the original optimization problem into a convex problem,the optimal task offloading proportion of VUE and MEC computation resource allocation can be obtained.The simulation further demonstrates that the JAWC algorithm can significantly reduce the total delay as well as ensure the communication reliability of VUE in the MEC-enabled vehicular network.Yanzhao Hou Chengrui Wang Min Zhu Xiaodong Xu Xiaofeng Tao Xunchao Wu 2021China Communications2021,18,6:4
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