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| 1 | 北斗导航系统卫星激光测距综述显示文摘Satellite laser ranging(SLR)is an unambiguous measurement technique and generates high accuracy satellite orbit data.All satellites in the BeiDou navigation satellite system(BDS)carried laser retro-reflector arrays(LRAs),so they can be tracked by ground SLR stations in order to provide the accurate observation data.The Shanghai astronomical observatory(SHAO)designed the LRAs,and also developed the dedicated SLR systems using a 1 m-aperture telescope and a transportable cabin-based SLR system with a telescopes of 60 cm aperture.These enable BDS satellite ranging during daytime and nighttime with centimeter-level precision,allowing highly accurate estimations of satellite orbits.Moreover,some of the BDS satellites are also equipped with laser time transfer(LTT)payloads,which were developed by the SHAO and China Academy of Space Technology(CAST),providing a highly accurate time comparison between the satellites and ground clocks.This paper describes the dedicated SLR system and the design of the LRAs for BDS satellites,as well as global SLR measurements.The SLR tracking data is used for evaluating the orbit accuracy of BDS satellites and broadcast ephemeris,with an accuracy of less than 1 m.The LTT measurements to BDS satellites for a single shot have a precision of approximately 300 picoseconds,with a time stability of 20 picoseconds in 500 s. | ZHANG Haifeng LONG Mingliang YANG Huafeng MENG Wendong CHENG Zhi’en DENG Huarong ZHANG Zhongping ZHANG A’li | 2020 | Aerospace China2020，21，4： | 4 |
| 2 | The progress of laser ranging technology at Shanghai Astronomical Observatory显示文摘As an important station of International Laser Ranging Service(ILRS),Shanghai Astronomical Observatory(SHAO)has upgraded Satellite Laser Ranging(SLR)system with high repetition rate and achieved some technological progress,There are a lot of improvements for overall system performance,such as annual observation passes,measurement precision and quality of observation data.SLR technology with repetition rate of 10 kHz is accomplished firstly in China,and space debris laser ranging technology with200 Hz laser is promoted and proved to be more detective for weak echo,which lead to successful measurement for 40,000 km satellites and space debris within 3000 km.At the same time,SLR based on multi-telescopes and 1064 nm wavelength are planned to make a breakthrough of detection capabilities,and also to expand its application fields.These progresses will be introduced in this paper in detail. | Zhibo Wu Haifeng Zhang Huarong Deng Mingliang Long Zhien Cheng Zhongping Zhang Wendong Meng | 2019 | Geodesy and Geodynamics2019，10，6： | 1 |
| 3 | Spatially resolved expression landscape and generegulatory network of human gastric corpus epithelium显示文摘Molecular knowledge of human gastric corpus epithelium remains incomplete.Here,by integrated analyses using single-cell RNA sequencing(scRNA-seq),spatial transcriptomics,and single-cell assay for transposase accessible chromatin sequencing(scATAC-seq)techniques,we uncovered the spatially resolved expression landscape and gene-regulatory network of human gastric corpus epithelium.Specifically,we identified a stem/progenitor cell population in the isthmus of human gastric corpus,where EGF and WNT signaling pathways were activated.Meanwhile,LGR4,but not LGR5,was responsible for the activation of WNT signaling pathway.Importantly,FABP5 and NME1 were identified and validated as crucial for both normal gastric stem/progenitor cells and gastric cancer cells.Finally,we explored the epigenetic regulation of critical genes for gastric corpus epithelium at chromatin state level,and identified several important cell-type-specific transcription factors.In summary,our work provides novel insights to systematically understand the cellular diversity and homeostasis of human gastric corpus epithelium in vivo. | Ji Dong Xinglong Wu Xin Zhou Yuan Gao Changliang Wang Wendong Wang Weiya He Jingyun Li Wenjun Deng Jiayu Liao Xiaotian Wu Yongqu Lu Antony KChen Lu Wen Wei Fu Fuchou Tang | 2023 | Protein & Cell2023，14，6： | 0 |
| 4 | Growth Performance of Cypress (Cupressus funebris) Trees in Progeny Test Plantations显示文摘Based on the 6-year-old young forests of 40 cypress(Cupressus funebris) families from four provenances(Fengdu County, Youyang County and Zhong County of Chongqing City, and Qiandao Lake in Zhejiang Province), differences in growth traits between families and provenances were studied to select excellent families, so as to provide necessary data support for the upgrading of cypress seed gardens and inferior thinning of seed gardens. The results showed that there were significant differences in tree height, diameter at one meter height, crown width and growth potential between families and provenances. The coefficients of variation among families were 10.25%, 7.19%, 5.91% and 0.98%, respectively, and the coefficients of variation in tree height and diameter at one meter height among provenances were 7.25% and 12.58%, respectively, indicating that the tree height and diameter at one meter height of the superior cypress tree families were rich in variation among families and provenances, and there was potential for high-generation breeding. According to the selection rate of 15%, six excellent families for afforestation(Feng 8, Shi 4, Feng 1, Ye 14, Shi 3, and Ye 6) were screened. The average diameter at one meter height, tree height and crown width of the six excellent families were, respectively, 2.97 cm, 3.39 and 0.78 m, which were 18.82%, 12.70% and 15.42% higher than the family average, respectively, and 15.09%, 9.79% and 15.53% higher than the control group, respectively. | Angui DENG Yong PENG Xiaomei TAN Wendong ZENG Yujun LUO Changwan TAN Yanting LIU Zhengyan LIU Chenyang WANG | 2019 | Agricultural Biotechnology2019，8，2： | 0 |
| 5 | Interruptible Load Management Strategy Based on Chamberlain Model显示文摘 | Zhaoyuan Xie Xiujuan Li Tao Xu Minghao Li Wendong Deng Bo Gu | 2018 | 国际计算机前沿大会会议论文集2018，，1： | 0 |
| 6 | Effects of incident energy and angle on carbon cluster ions implantation on silicon substrate:a molecular dynamics study显示文摘Carbon cluster ion implantation is an important technique in fabricating functional devices at micro/nanoscale. In this work, a numerical model is constructed for implantation and implemented with a cuttingedge molecular dynamics method. A series of simulations with varying incident energies and incident angles is performed for incidence on silicon substrate and correlated effects are compared in detail. Meanwhile, the behavior of the cluster during implantation is also examined under elevated temperatures. By mapping the nanoscopic morphology with variable parameters, numerical formalism is proposed to explain the different impacts on phrase transition and surface pattern formation. Particularly, implantation efficiency(IE) is computed and further used to evaluate the performance of the overall process. The calculated results could be properly adopted as the theoretical basis for designing nano-structures and adjusting devices' properties. | Ye Wei Shengbo Sang Bing Zhou Xiao Deng Jing Chai Jianlong Ji Yang Ge Yuanliang Huo Wendong Zhang | 2017 | Journal of Semiconductors2017，38，9： | 0 |
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