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| 1 | Accurate Analysis of Connectivity and Resilience for a Class of Wireless Sensor Networks显示文摘Increasing attention is being devoted to network security with the extensive application of wireless sensor networks in various fields. Connectivity and resilience are the crucial metrics of network security.We establish precise formulas for obtaining the resilience of a Key predistribution scheme(KPS) obtained from an Orthogonal array(OA). We study the connectivity and resilience of the Broadcast-enhanced key predistribution scheme(BEKPS) based on OAs and improve the existing methods. We also present precise formulas for evaluating the resilience of these schemes based on any number of partitions, completely solving the problem regarding the resilience of this type of BEKPS. We obtain precise formulas for ensuring the connectivity of two partitions under the condition that each pair of trees from different partitions intersects at exactly one node. We present a general approximate formula for evaluating the connectivity of more than two partitions, providing a positive solution to the open problem in Kendall et al.'s paper in ACM Transactions on Sensor Networks(Vol.11,No.1, 2014). Thus, we can conclude that for this type of BEKPS, connectivity increases, whereas resilience remains unchanged as the number of partitions increases. A comparison of the obtained results and the previously reported results reveals the superior performance of the proposed BEKPSs. | PANG Shanqi HU Xianchao GAO Qiang LI Yongmei XIA Yifan | 2020 | Chinese Journal of Electronics2020，29，2： | 5 |
| 2 | Progress of Jinping Underground laboratory for Nuclear Astrophysics(JUNA)显示文摘Jinping Underground laboratory for Nuclear Astrophysics(JUNA) will take the advantage of the ultra-low background of CJPL lab and high current accelerator based on an ECR source and a highly sensitive detector to directly study for the first time a number of crucial reactions occurring at their relevant stellar energies during the evolution of hydrostatic stars. In its first phase, JUNA aims at the direct measurements of^(25)Mg(p,γ)^(26)Al,^(19)F(p,α)^(16)O,^(13)C(α,n)^(16)O and ^(12)C(α,γ)^(16)O reactions. The experimental setup,which includes an accelerator system with high stability and high intensity, a detector system, and a shielding material with low background, will be established during the above research. The current progress of JUNA will be given. | WeiPing Liu ZhiHong Li JiangJun He XiaoDong Tang Gang Lian Zhu An JianJun Chang Han Chen QingHao Chen XiongJun Chen ZhiJun Chen BaoQun Cui XianChao Du ChangBo Fu Lin Gan Bing Guo GuoZhu He Alexander Heger SuQing Hou HanXiong Huang Ning Huang BaoLu Jia LiYang Jiang Shigeru Kubono JianMin Li KuoAng Li Tao Li YunJu Li Maria Lugaro XiaoBing Luo HongYi Ma ShaoBo Ma DongMing Mei YongZhong Qian JiuChang Qin Jie Ren YangPing Shen Jun Su LiangTing Sun WanPeng Tan Isao Tanihata Shuo Wang Peng Wang YouBao Wang Qi Wu ShiWei Xu ShengQuan Yan LiTao Yang Yao Yang XiangQing Yu Qian Yue Sheng Zeng HuanYu Zhang Hui Zhang LiYong Zhang NingTao Zhang QiWei Zhang Tao Zhang XiaoPeng Zhang XueZhen Zhang ZiMing Zhang Wei Zhao Zuo Zhao Chao Zhou | 2016 | Science China(Physics,Mechanics & Astronomy)2016，59，4： | 3 |
| 3 | Micro-segregation and Precipitation of Alloy 690 during Isothermal Solidification:the Role of Nitrogen Content显示文摘The segregation and precipitation behavior of Alloy 690 containing 0.001-0.11 wt% nitrogen during isothermal solidification at 1370 and 1355 ℃ have been investigated using optical microscopy (OM),electron probe microanalysis (EPMA) and transmission electron microscopy (TEM).The results indicate that the volume fraction of TiN-type nitride formed during isothermal solidification increases with the nitrogen content of Alloy 690.Segregation of Ti and Cr exists in samples solidified at 1370 and 1355℃.The Ti content in the residual liquid markedly decreases and the concentration of Cr increases when the nitrogen content of Alloy 690 increases.Furthermore,N and S also show segregation to some extent in the residual liquids at 1355℃.Accompanying by the segregation of Cr,Ti,C,N and S,sulfides and chromium nitrides form.In a low nitrogen content Alloy 690,sulfur segregates and precipitates in the form of Ti 4 C 2 S 2 and (Cr,Ti)S,but in the form of (Cr,Ti)S or CrS in a high nitrogen content Alloy 690.(Cr,Ti)N-type nitrides with an fcc crystal structure have been identified in a sample with 0.11 wt% nitrogen. | Rong Jiang Bo Chen Xianchao Hao Yingche Ma Shuo Li Kui Liu | 2012 | Journal of Materials Science & Technology2012，28，5： | 3 |
| 4 | 3.6 W compact all-fiber Pr3+-doped green laser at 521 nm显示文摘Green semiconductor lasers are still undeveloped,so high-power green lasers have heavily relied on nonlinear frequency conversion of near-infrared lasers,precluding compact and low-cost green laser systems.Here,we report the first Watt-level all-fiber CW Pr3t-doped laser operating directly in the green spectral region,addressing the aforementioned difficulties.The compact all-fiber laser consists of a double-clad Pr3t-doped fluoride fiber,two homemade fiber dichroic mirrors at visible wavelengths,and a 443-nm fiber-pigtailed pump source.Benefitting from>10 MW∕cm2 high damage intensity of our designed fiber dielectric mirror,the green laser can stably deliver 3.62-W of continuous-wave power at∼521 nm with a slope efficiency of 20.9%.To the best of our knowledge,this is the largest output power directly from green fiber lasers,which is one order higher than previously reported.Moreover,these green all-fiber laser designs are optimized by using experiments and numerical simulations.Numerical results are in excellent agreement with our experimental results and show that the optimal gain fiber length,output mirror reflectivity,and doping level should be considered to obtain higher power and efficiency.This work may pave a path toward compact high-power green all-fiber lasers for applications in biomedicine,laser display,underwater detection,and spectroscopy. | Jinhai Zou Jinfen Hong Zhuang Zhao Qingyuan Li Qiujun Ruan Hang Wang Yikun Bu Xianchao Guan Min Zhou Zhiyong Feng Zhengqian Luo | 2022 | Advanced Photonics2022，4，5： | 2 |
| 5 | Genome-wide analysis of NDR1/HIN1-like genes in pepper(Capsicum annuum L.)and functional characterization of CaNHL4 under biotic and abiotic stresses显示文摘Plant NDR1/HIN1-like(NHL)genes play an important role in triggering plant defenses in response to biotic stresses.In this study,we performed a genome-wide identification of the NHL genes in pepper(Capsicum annuum L.)and characterized the functional roles of these CaNHL genes in response to abiotic stresses and infection by different pathogens.Phylogenetic analysis revealed that CaNHLs can be classified into five distinct subgroups,with each group containing generic and specific motifs.Regulatory element analysis showed that the majority of the promoter regions of the identified CaNHLs contain jasmonic acid(JA)-responsive and salicylic acid(SA)-responsive elements,and transcriptomic analysis revealed that CaNHL genes are expressed in all the examined tissues of pepper.The CaNHL1,CaNHL4,CaNHL6,CaNHL10,CaNHL11,and CaNHL12 genes were significantly upregulated under abiotic stress as well as in response to different pathogens,such as TMV,Phytophthora capsici and Pseudomonas syringae.In addition,we found that CaNHL4 localizes to the plasma membrane.CaNHL4-silenced pepper plants display significantly increased susceptibility to TMV,Phytophthora capsici and Pseudomonas syringae,exhibiting reduced expression of JA-related and SA-related genes and reduced ROS production.However,transient overexpression of CaNHL4 in pepper increases the expression of JArelated and SA-related genes,enhances the accumulation of ROS,and inhibits the infection of these three pathogens.Collectively,for the first time,we identified the NHL genes in pepper and demonstrated that CaNHL4 is involved in the production of ROS and that it also regulates the expression of JA-related and SA-related genes in response to different pathogens,suggesting that members of the CaNHL family play an essential role in the disease resistance of pepper. | Changyun Liu Haoran Peng Xinyu Li Chaolong Liu Xing Lv Xuefeng Wei Aihong Zou Jian Zhang Guangjin Fan Guanhua Ma Lisong Ma Xianchao Sun | 2020 | Horticulture Research2020，7，1： | 2 |
| 6 | New kinematic structures for 2-,3-,4-,and 5-DOF parallel manipulator designs显示文摘 | GAO Feng LI Weimin ZHAO Xianchao | | 0，，11： | 1 |
| 7 | New kinematic structures for 2-, 3-, 4-, and 5-DOF parallel manipulator designs显示文摘 | GAO Feng LI Weimin ZHAO Xianchao | 2002 | Mechanism and Machine Theory2002，37，11： | 1 |
| 8 | New kinematic structures for 2-, 3-, 4-, and 5-DOF parallel manipulator designs显示文摘 | GAO Feng LI Weimin ZHAO Xianchao | 2002 | Mechanism and Machine Theory2002，37，： | 1 |
| 9 | New kinematic structures for 2 - , 3 - , 4 - , and 5 - DOF parallel manipulator designs 显示文摘 | GAO Feng LI Weimin ZHAO Xianchao | 2002 | Mechanism and Machine Theory2002，37，： | 1 |
| 10 | New Kinematic structures for 2- ,3 - ,4 - , and 5 - DOF parallel manipulator designs显示文摘 | Feng Gao Li Weimin Zhao Xianchao | 2002 | Mechanism and Machine Theory2002，37，： | 1 |
| 11 | New kinematic structures for 2-,3-,4-,and 5-dof parallel manipulator designs显示文摘 | Feng Gao Weimin Li Xianchao Zhao | 2002 | Mechanism and Machine Theory2002，37，： | 1 |
| 12 | Local Density Adaptive Similatiry Measurement for Specctral Clustering显示文摘 | Zhang Xianchao Li Jingwei Yu Hong | 2011 | Pattern Recognition Letters2011，32，2： | 1 |
| 13 | New Kinematic Structures for 2-,3-,4-,and 5-dof Parallel Manipulator Design 显示文摘 | Gao Feng Li Weimin Zhao Xianchao | 2002 | Mechanism and Machine Theory2002，37，6： | 1 |
| 14 | Effects of microstructure evolution on the deformation mechanisms and tensile properties of a new Ni-base superalloy during aging at 800℃显示文摘Tensile properties at room temperature of a new casting Ni-base superalloy during aging at 800℃ for0-1000 h were investigated.During aging,granular M23C6 carbides presented at grain boundaries and kept growing from dispersed particles to continuous networks.The γ’ phase significantly coarsened,with the morphology of some γ’ phase changed from spherical to rounded cubic shape after 1000 h.Three deformation mechanisms in relation to the γ’ diameter(dγ’) were identified:(ⅰ) weakly coupled dislocations(WCD) connected by anti-phase boundary(APB) traveled in pair across the γ/γ’ structure when dγ’ was small in the under-aged alloys;(ⅱ) strongly coupled dislocations(SCD) with reduced spacing compared to(ⅰ) sheared γ’ phase when dγ’ increased in the over-aged alloys;(ⅲ) dislocations occasionally by-passed γ’ phase when dγ’ was larger than 97 nm after aging for more than 300 h.The alloy obtained the peak strength when 20 h-aged with dγ’=44 nm which was in the transition between(ⅰ) and(ⅱ).The aginginduced variation in yield strength was correlated to the coarsening of γ’ phase using a theoretical model of precipitation strengthening in terms of the formation of APB.The calculated results suggested that the γ’ phase with a volume fraction of 23% contributed more than 61% of the peak-aged yield strength.Observation after fracture revealed that the alloys usually fractured at grain boundaries.High stress concentration around carbides resulted in cracks by carbides self-cracking and the initiation of cavities.The undesirable agglomeration of M23C6 at grain boundaries was harmful to the properties of the overaged alloys. | Kunlei Hou Min Wang Meiqiong Ou Haoze Li Xianchao Hao Yingche Ma Kui Liu | 2021 | Journal of Materials Science & Technology2021，，9： | 1 |
| 15 | New kinematic structures for 2-,3-,4-,and 5-DOF parallel manipulator designs显示文摘 | Feng Gao Weimin Li Xianchao Zhao Zhenlin Jin Hui Zhao | 2002 | Mechanism and Machine Theory2002，4，： | 1 |
| 16 | New kinematic structures for 2-, 3-, 4-, and 5-DOF parallel manipulator designs显示文摘 | GAO Feng LI Weimin ZHAO Xianchao | 2002 | Mechanism and Machine Theory2002，37，11： | 1 |
| 17 | New Kinematic structures for 2 -, 3 -, 4 -, and 5 - DOF parallel manipulator designs 显示文摘 | Fen Gao Weimin Li Xianchao Zhao | 2002 | Mechanism and Machine Theory2002，37，2002： | 1 |
| 18 | Carry-free vector-matrix multiplication on a dynamically reconfigurable optical platform显示文摘 | Wang Xianchao Peng Junjie Li Mei | 2010 | Applied Optics2010，49，12： | 1 |
| 19 | New kinematic structures for 2-, 3-, 4-, and 5-DOF parallel manipulator designs显示文摘 | GAO Feng LI Weiming ZHAO Xianchao | 2002 | Mechanism and Machine Theory2002，37，： | 1 |
| 20 | Optimization of Proportion and Formulation Process of Jinweng Granule by D-Optimal Mixture Design显示文摘[Objectives] To study the optimal proportion and formulation process of Jinweng granule,the physicochemical properties of the optimal preparing process was observed. [Methods] Adopting the D-optimal mixture design method,selecting the mixing ratio of starch,dextrin,fumei powder and lactose as tested factors,and selecting the most significant factor between hygroscopicity,formability,solubility as the evaluation index,the optimal proportion of filler was examined by system experiments. Granularity,solubility,the angle of repose,and critical relative humidity( CRH) were used to evaluate the optimal proportion and formulation process of Jinweng granule. [Results]The optimal prescription of Jinweng granule is extract∶ starch∶ dextrin∶ lactose∶ fumei powder( 1∶ 0. 5∶ 0. 05∶ 0. 3∶ 0. 15),and the binder was consisted of 1% sodium carboxymethylcellulose( CMC) slurry and 3% starch syrup. The CRH of the optimum formulation process of granule is 72%,and the fluidity,solubility and granularity were qualified. [Conclusions] The process model established by D-optimum mixture design has good predictability,and the granule prepared by the optimal proportion has good repeatability,and the granule proportion and formulation process is stable and reliable. | Xin YUE Li LIU Yongfeng HAO Juan LIU Dengfang CHENG Qingchang YANG Xianchao YANG Xuehong HU | 2018 | Medicinal Plant2018，9，1： | 1 |
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