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| 1 | Community structure and elevational diversity patterns of soil Acidobacteria显示文摘Acidobacteria is one of the most dominant and abundant phyla in soil,and was believed to have a wide range of metabolic and genetic functions. Relatively little is known about its community structure and elevational diversity patterns. We selected four elevation gradients from 1000 to 2800 m with typical vegetation types of the northern slope of Shennongjia Mountain in central China. The vegetation types were evergreen broadleaved forest,deciduous broadleaved forest,coniferous forest and sub-alpine shrubs. We analyzed the soil acidobacterial community composition,elevational patterns and the relationship between Acidobacteria subdivisions and soil enzyme activities by using the 16 S rRNA meta-sequencing technique and multivariate statistical analysis. The result found that 19 known subdivisions as well as an unclassified phylotype were presented in these forest sites,and Subdivision 6 has the highest number of detectable operational taxonomic units(OTUs). A significant single peak distribution pattern(P < 0.05) between the OTU number and the elevation was observed. The Jaccard and Bray–Curtis index analysis showed that the soil Acidobacteria compositional similarity significantly decreased(P < 0.01) with the increase in elevation distance. Mantel test analysis showed the most of the soil Acidobacteria subdivisions had the significant relationship(P < 0.01) with different soil enzymes. Therefore,soil Acidobacteria may be involved in different ecosystem functions in global elemental cycles. Partial Mantel tests and CCA analysis showed that soil pH,soil temperature and plant diversity may be the key factors in shaping the soil Acidobacterial community structure. | Yuguang Zhang Jing Cong Hui Lu Guangliang Li Yuanyuan Qu Xiujiang Su Jizhong Zhou Diqiang Li | 2014 | Journal of Environmental Sciences2014,26,8: | 17 |
| 2 | Characteristics of the lunar samples returned by the Chang'E-5 mission显示文摘Forty-five years after the Apollo and Luna missions returned lunar samples,China's Chang’E-5(CE-5)mission collected new samples from the mid-latitude region in the northeastern Oceanus Procellarum of the Moon.Our study shows that 95%of CE-5 lunar soil sizes are found to be within the range of 1.40-9.35μm,while 95%of the soils by mass are within the size range of 4.84-432.27μm.The bulk density,true density and specific surface area of CE-5 soils are 1.2387 g/cm^(3),3.1952 g/cm^(3) and 0.56 m^(2)/g,respectively.Fragments from the CE-5 regolith are classified into igneous clasts(mostly basalt),agglutinate and glass.A few breccias were also found.The minerals and compositions of CE-5 soils are consistent with mare basalts and can be classified as low-Ti/low-Al/low-K type with lower rare-earth-element contents than materials rich in potassium,rare earth element and phosphorus.CE-5 soils have high FeO and low Mg index,which could represent a new class of basalt. | Chunlai Li Hao Hu Meng-Fei Yang Zhao-Yu Pei Qin Zhou Xin Ren Bin Liu Dawei Liu Xingguo Zeng Guangliang Zhang Hongbo Zhang Jianjun Liu Qiong Wang Xiangjin Deng Caijin Xiao Yonggang Yao Dingshuai Xue Wei Zuo Yan Su Weibin Wen Ziyuan Ouyang | 2022 | National Science Review2022,9,2: | 12 |
| 3 | Studies on the evolution process of rockbursts in deep tunnels显示文摘This paper focuses on the evolution processes of different types of rockbursts occurring in deep tunnels. A series of laboratory tests and in-situ monitoring in deep tunnels excavated by tunnel boring machine (TBM) and drill-and-blast (D&B) method have been conducted to understand the mechanisms and processes of the evolution of different types of rockbursts, including strain rockburst, strain-structure slip rockburst, immediate rockburst and time-delayed rockburst. Three different risk assessment methods are proposed to evaluate the intensity and potential failure depth of rockbursts. These methods can be applied before excavation and the results can be updated according to the real-time information during excavation. Two micro-seismicity based real-time warning systems have been established for predicting various intensities of rockbursts, such as slight, moderate, intensive and extremely intensive rockbursts. Meanwhile, the probability and intensity of the rockburst are also given. The strategy for excavation and support design has been suggested for various intensities of rockbursts before excavation. The strategy for dynamic control of the rockburst evolution process is also proposed according to the monitoring results. The methodology has been successfully applied to rockburst risk reduction for deep tunnels at Jinping II hydropower project. The results have illustrated the applicability of the proposed methodology and techniques concerning rockbursts. | Xiating Feng Bingrui Chen Shaojun Li Chuanqing Zhang Yaxun Xiao Guangliang Feng Hui Zhou Shili Qiu Zhouneng Zhao Yang Yu Dongfang Chen Huajun Ming | 2012 | Journal of Rock Mechanics and Geotechnical Engineering2012,4,4: | 11 |
| 4 | Preliminary results of TiO_2 mapping using Imaging Interferometer data from Chang'E-1显示文摘The distribution of titanium abundance on the lunar surface is important knowledge for lunar geologic studies and future resource utilization.In this paper,we develop a preliminary model based on'ground truths'from Apollo and Luna sample-return sites to produce a titanium abundance map from Chang’E-1 Imaging Interferometer(IIM) images.The derived TiO2 abundances are validated with Clementine UVVIS results in several regions,including lunar highlands neighboring the Apollo 16 landing site,and high-Ti and low-Ti maria near the standard site of Mare Serenitatis(MS2) .The validation results show that TiO2 abundances modeled with Chang’E-1 IIM data are overestimated for highlands(~0.7 wt.%) and low-Ti maria(~1.5 wt.%) and underestimated for high-Ti maria(~0.8 wt.%). | LING ZongCheng ZHANG Jiang LIU JianZhong ZHANG WenXi ZHANG GuangLiang LIU Bin REN Xin MU LingLi LIU JianJun LI ChunLai | 2011 | Chinese Science Bulletin2011,56,20: | 10 |
| 5 | Relative position determination between Chang'E-3lander and rover using in-beam phase referencing显示文摘Chang'E-3 is China's first lunar surface exploration mission, as a part of the second phase of China's Lunar Exploration Program(CLEP). It landed successfully in the northwest of Mare Imbrium on December 14,2013, incorporating two probes, a lander and a rover named Yutu. The execution of the cooperative science tasks required an accurate determination of the relative position between the lander and the rover. In-beam phase referencing experiments have been conducted with the Chinese VLBI Network(CVN) to accurately image the rover in reference to the stationary lander in order to obtain their offsets in Right Ascension and Declination,which were then transformed into the lunar local coordinate system to acquire their relative position on the lunar surface. The observations and the data processing procedures are described in this paper. Images of the rover in six epochs between December 15 and 21, 2013 were made, resulting in accurate positions of the rover that are consistent with the visual localization approach. Through measurement of the locations of the rover's omnidirectional antenna with respect to the lander's directional antenna before their separation, and the recognition of the rover's turning actions during its exploratory moves, we demonstrate that the accuracy of relative position determined in this way could reach the meter level and the resolution is better than 1 m. | ZHOU Huan LI Hai Tao DONG GuangLiang | 2015 | Science China(Information Sciences)2015,58,9: | 9 |
| 6 | Trends of Overweight and Obesity in Yi People between 1996 and 2007:An Yi Migrant Study显示文摘Objective To evaluate trends of overweight and obesity prevalence between 1996 and 2007 in Yi farmers and Yi migrants.Methods An Yi migrant study was conducted in Liangshan Yi Autonomous Prefecture,Sichuan Province,China from 1996 to 2007.Data were collected with identical methods,including standardized questionnaire and body measurements.Results Age‐ and sex‐specific body mass index (BMI) significantly increased from 20.02 in 1996 to 22.36 in 2007,among Yi farmers,which was significantly different from those among Yi migrants (23.67 in 2007 and 20.90 in 1996) (P<0.05).Prevalence of obesity rose from 1.21 % in 1996 to 4.55 % in 2007 (OR=1.15,P<0.001) in Yi migrants,while that in Yi farmers from none in 1996 to 0.12 % in 2007 (P>0.05).Prevalence of overweight rose significantly to 26.24 %in 2007 from 17.24 % in 1996 (OR=1.06,P<0.001) in Yi migrants,while that in Yi farmers from 1.29 % in 1996 to 4.45 % in 2007 (OR=1.14,P<0.001).Yi migrants appeared to have a 5.52‐fold higher risk ondeveloping overweight and obesity than Yi farmers have.Conclusion The Yi migrants had a steeper increase of overweight with year and consequently caused more obesity.Change in lifestyle may contribute most likely to higher prevalence of overweight and obesity in Yi migrants. | SHAN GuangLiang WEI DaYing WANG ChunXiu ZHANG JianHua Wang Bin MA MingJu PAN Li YU Tao XUE Fang WU ZhengLai | 2011 | Biomedical and Environmental Sciences2011,24,5: | 9 |
| 7 | Emergency treatment of 16 patients with necrotizing fasciitis caused by Vibrio vulnificus infection complicated with septic shock显示文摘Necrotizing fasciitis (NF) caused by vibrio vulnificus (VV) is a rare but fatal clinical emergency characterized by hemorrhagic bullous skin lesions,septic shock and multiple organ dysfunction syndrome (MODS),commonly occurring in patients with chronic liver disease.1,2 In general,mortality of these patients is higher than 60%,which could approach 100% when complicated with septic shock.Therefore,early diagnosis and effectively surgical intervention in emergency room are the mainstays for better outcomes of these patients.However,many emergency physicians lack experiences in diagnosing and managing vibrio NF.Furthermore,due to the preexisting severe medical complications including hypotension,lactic acidosis,coagulation disorders and thrombocytopenia,the optimal therapeutic strategies for these critical patients should obviously be evaluated on a patient-to-patient basis,which remains largely undefined. | Hong Guangliang Wu Bin Lu Caijiao Li Mengfang Zhao Guangju Lu Zhongqiu | 2014 | Chinese Medical Journal2014,,10: | 8 |
| 8 | Data Analysis of Chang'E-1 Gamma-Ray Spectrometer and Global Distribution of U,K,and Th Elemental Abundances显示文摘Gamma 光线分光计(GRS ) 是 Chang'E-1 (CE-1 ) 上的主要收费载重之一月亮的探查,主要试图在月亮的表面上检测元素的丰富和分布。在 03:58 在 2007 年 11 月 28 日,它执行了月亮的 gamma 光线的第一观察。2008 年 10 月 24 日,有效 gamma 光线系列的 2105 h 被 CE-1 GRS 获得了,它盖住月亮的整个表面。这份报纸主要描述处理由使用导出元素的丰富的过程和 CE-1 GRS 时间系列改正了系列的方法的数据:首先,到进为印射的象素的箱数据;然后,执行累积系列的背景扣除并且获得元素的一个山峰区域;并且最后,当模特儿使用元素的丰富倒置生产元素的丰富。在这些上基于比 EPR 在 5s 处理方法, U 的全球丰富地图, K,和 Th。在在 near-EPR 海底山下面的岩浆结晶化压力和融化的条件之间的关联暗示来源吗? | ZOU Yongliao ZHANG Liyan LIU Jianzhong MU Lingli REN Xin ZHANG Guangliang CHANG Jin YAN Jun ZHANG Nan ZHANG Hongbo LU Chang LIU Jianjun ZUO Wei SU Yan WEN Weibin BIAN Wei WANG Min XU Chun LI Chunlai OUYANG Ziyuan | 2011 | Acta Geologica Sinica(English Edition)2011,85,6: | 6 |
| 9 | Mesenchymal stem cell treatment improves outcome of COVID-19 patients via multiple immunomodulatory mechanisms显示文摘The infusion of coronavirus disease 2019(COVID-19)patients with mesenchymal stem cells(MSCs)potentially improves clinical symptoms,but the underlying mechanism remains unclear.We conducted a randomized,single-blind,placebo-controlled(29 patients/group)phase II clinical trial to validate previous findings and explore the potential mechanisms.Patients treated with umbilical cord-derived MSCs exhibited a shorter hospital stay(P=0.0198)and less time required for symptoms remission(P=0.0194)than those who received placebo.Based on chest images,both severe and critical patients treated with MSCs showed improvement by day 7(P=0.0099)and day 21(P=0.0084).MSC-treated patients had fewer adverse events.MSC infusion reduced the levels of C-reactive protein,proinflammatory cytokines,and neutrophil extracellular traps(NETs)and promoted the maintenance of SARS-CoV-2-specific antibodies.To explore how MSCs modulate the immune system,we employed single-cell RNA sequencing analysis on peripheral blood.Our analysis identified a novel subpopulation of VNN2+hematopoietic stem/progenitorlike(HSPC-like)cells expressing CSF3R and PTPRE that were mobilized following MSC infusion.Genes encoding chemotaxis factors—CX3CR1 and L-selectin—were upregulated in various immune cells.MSC treatment also regulated B cell subsets and increased the expression of costimulatory CD28 in T cells in vivo and in vitro.In addition,an in vivo mouse study confirmed that MSCs suppressed NET release and reduced venous thrombosis by upregulating kindlin-3 signaling.Together,our results underscore the role of MSCs in improving COVID-19 patient outcomes via maintenance of immune homeostasis. | Rongjia Zhu Tingdong Yan Yingmei Feng Yan Liu Hongcui Cao Gongxin Peng Yanlei Yang Zhen Xu Jingqi Liu Wei Hou Xiaoyue Wang Zhe Li Luchan Deng Shihua Wang Jing Li Qin Han Hongling Li Guangliang Shan Yinghao Cao Xingyan An Jianshe Yan Zhonghui Zhang Huafei Li Xuebin Qu Jiaqi Zhu Shumin Zhou Jiao Wang Fengchun Zhang Jinming Gao Ronghua Jin Dayong Xu Yan-Qing Ma Tao Huang Shuang Peng Zhi Zheng Ilia Stambler Eric Gilson Lee Wei Lim Alexey Moskalev Antonio Cano Sasanka Chakrabarti Brun Ulfhake Huanxing Su Haoying Xu Sihuan Xu Feng Wei Holly MBrown-Borg Kyung-Jin Min Georgina Ellison-Hughes Calogero Caruso Kunlin Jin Robert Chunhua Zhao | 2021 | Cell Research2021,31,12: | 5 |
| 10 | In-situ observations of damage-fracture evolution in surrounding rock upon unloading in 2400-m-deep tunnels显示文摘The damage-fracture evolution of deep rock mass has obvious particularity,which is revealed in 2400-mdeep tunnels by field tests.The evolution of the excavation damaged zone depth is consistent with that of the fractured zone depth.The ratio of the excavation damaged zone depth to the excavation fractured zone depth is greater than 2.0 in a rock mass with both high strength and good integrity,but less than1.5 in a rock mass with lower strength or poor integrity.Zonal disintegration in a rock mass with high strength and fair integrity is more likely to occur when it contains more than two groups of primary fractures in damaged zones.Fractures develop outward in zonal disintegration but are totally different from the single-zone fracture,in which the fractures develop inward,and it is the starting position of the fractured zone when the excavation surface of the middle pilot is 7–9 m close to the pre-set borehole and it stops after the excavation surface of the baseplate is 11–14 m away.The most intense evolution occurs around 2–4 m from the pre-set borehole in the sidewall expansion stage.The research results provide a reference for the monitoring scheme and support design of CJPL-Ⅲin its future construction. | Haosen Guo Qiancheng Sun Guangliang Feng Shaojun Li Yaxun Xiao | 2023 | International Journal of Mining Science and Technology2023,33,4: | 5 |
| 11 | Prevalence, risk factors, and survival associated with pulmonary hypertension and heart failure among patients with underlying coronary artery disease: a national prospective, multicenter registry study in China显示文摘Background: Coronary artery disease (CAD) is the commonest cause of heart failure (HF), whereas pulmonary hypertension (PH) has not been established or reported in this patient population. Therefore, we assessed the prevalence, risk factors, and survival in CAD-associated HF (CAD-HF) complicated with PH.Methods: Symptomatic CAD-HF patients were continuously enrolled in this prospective, multicenter registry study. Echocardiography, coronary arteriography, left and right heart catheterization (RHC), and other baseline clinical data were recorded. Patients were followed up and their survival was recorded.Results: One hundred and eighty-two CAD-HF patients were enrolled, including 142 with HF with a preserved ejection fraction (heart failure with preserved ejection fraction [HFpEF];left ventricular ejection fraction [LVEF] ≥50%) and 40 with a reduced ejection fraction (heart failure with reduced ejection fraction [HFrEF];LVEF < 50%). PH was diagnosed with RHC in 77.5% of patients. Patients with PH showed worse hemodynamic parameters and higher mortality. HFrEF-PH patients had worse survival than HFpEF-PH patients. CAD-HF patients with an enlarged left ventricular end-diastolic diameter and reduced hemoglobin were at higher risk of PH. Nitrate treatment reduced the risk of PH. Elevated creatinine and mean pulmonary arterial pressure (mPAP), diastolic pressure gradient (DPG) ≥7 mmHg, and previous myocardial infarction (MI) entailed a higher risk of mortality in CAD-HF patients with PH.Conclusions: PH is common in CAD-HF and worsens the hemodynamics and survival in these patients. Left ventricle enlargement and anemia increase the risk of PH in CAD-HF. Patients may benefit from nitrate medications. Renal impairment, elevated mPAP, DPG ≥7 mmHg, and previous MI are strong predictors of mortality in CAD-HF-PH patients.Trial Registration: ClinicalTrials.gov, NCT02164526. | Li Huang Lingpin Pang Qing Gu Tao Yang Wen Li Ruilin Quan Weiqing Su Weifeng Wu Fangming Tang Xiulong Zhu Jieyan Shen Jingzhi Sun Guangliang Shan Changming Xiong Shian Huang Jianguo He | 2022 | Chinese Medical Journal2022,,15: | 4 |
| 12 | An Examination of the Predictability of Tropical Cyclone Genesis in High-Resolution Coupled Models with Dynamically Downscaled Coupled Data Assimilation Initialization显示文摘Predicting tropical cyclone(TC)genesis is of great societal importance but scientifically challenging.It requires fineresolution coupled models that properly represent air−sea interactions in the atmospheric responses to local warm sea surface temperatures and feedbacks,with aid from coherent coupled initialization.This study uses three sets of highresolution regional coupled models(RCMs)covering the Asia−Pacific(AP)region initialized with local observations and dynamically downscaled coupled data assimilation to evaluate the predictability of TC genesis in the West Pacific.The APRCMs consist of three sets of high-resolution configurations of the Weather Research and Forecasting−Regional Ocean Model System(WRF-ROMS):27-km WRF with 9-km ROMS,and 9-km WRF with 3-km ROMS.In this study,a 9-km WRF with 9-km ROMS coupled model system is also used in a case test for the predictability of TC genesis.Since the local sea surface temperatures and wind shear conditions that favor TC formation are better resolved,the enhanced-resolution coupled model tends to improve the predictability of TC genesis,which could be further improved by improving planetary boundary layer physics,thus resolving better air−sea and air−land interactions. | Mingkui LI Shaoqing ZHANG Lixin WU Xiaopei LIN Ping CHANG Gohkan DANABASOGLU Zhiqiang WEI Xiaolin YU Huiqin HU Xiaohui MA Weiwei MA Haoran ZHAO Dongning JIA Xin LIU Kai MAO Youwei MA Yingjing JIANG Xue WANG Guangliang LIU Yuhu CHEN | 2020 | Advances in Atmospheric Sciences2020,37,9: | 4 |
| 13 | Hd1,Ghd7,and DTH8 synergistically determine the rice heading date and yield-related agronomic traits显示文摘Heading date determines the seasonal and regional adaptation of rice(Oryza sativa L.)varieties and is mainly controlled by photoperiod sensitivity(PS).The core heading date genes Hd1,Ghd7,DTH8,and PRR37 act synergistically in regulating the PS.In this study,we systematically analyze the heading date,PS,and agronomic traits of eight homozygous lines with various combinations of Hd1,Ghd7,and DTH8 alleles in the prr37 background under long-day(LD)and short-day(SD)conditions,respectively.We find that Hd1 alone promotes heading,regardless of the day length.However,under LDs,Hd1 suppresses flowering,in coordination with functional Ghd7 or with Ghd7 and DTH8.These loci cooperate to negatively regulate the Ehd1-Hd3 a/RFT1 pathway and delay heading.Under SDs,Hd1 competes with various heading suppressors to promote heading.Therefore,the dual function of Hd1 is vital for PS.The lines carrying Hd1 alone show reduced plant height with fewer primary and secondary branches in panicles.Lines carrying Ghd7 and DTH8(with hd1)show delayed heading and improve agronomic traits.Overall,our results reveal the regulation of rice PS flowering by the core heading date genes and their effects on agronomic traits,providing valuable information for the selection of rice varieties for adaptation to different light and temperature conditions. | Kangli Sun Minghui Huang Wubei Zong Dongdong Xiao Chen Lei Yanqiu Luo Yingang Song Shengting Li Yu Hao Wanni Luo Bingqun Xu Xiaotong Guo Guangliang Wei Letian Chen Yao-Guang Liu Jingxin Guo | 2022 | Journal of Genetics and Genomics2022,49,5: | 4 |
| 14 | Color image detail enhancement based on quaternion guided filter显示文摘Color image enhancement is an active research field in image processing. Currently, many image enhancement methods are capable of enhancing the details of the color image. However, these methods only process the red, green and blue(RGB) color channels separately, which leads to color distortion easily. In order to overcome this problem, the paper presents an approach to integrate the quaternion theory into the traditional guided filter to obtain a quaternion guided filter(QGF). This method makes full use of the color information of an image to realize the holistic processing of RGB color channels. So as to preserve color information while enhancing details, this paper proposes a color image detail enhancement algorithm based on the QGF. Experimental results show that the proposed algorithm is effective in the applications of the color image detail enhancement, and enables image's edges to be more prominent and texture clearer while avoiding color distortion. Compared with the existing image enhancement methods, the proposed method achieves better enhancement performance in terms of the visual quality and the objective evaluating indicators. | Wu Kun Li Guiju Han Guangliang Yang Hang Liu Peixun | 2017 | The Journal of China Universities of Posts and Telecommunications2017,24,4: | 3 |
| 15 | Temporal gravity changes before the 2008 Yutian Ms7.3 earthquake显示文摘Based on the data of the repeated gravity observation network in Chinese mainland since 1998,we analyzed the temporal changes of regional gravity field before the 2008 Yutian Ms7.3 earthquake.The result shows some mid-to-long term(two to ten years)changes during the earthquake's preparation.Notable features are a gravity increase lasting several years and a relatively large-scaled gradient zone of gravity change,the former indicating a continuous energy accumulation and the latter a possible location of seismic rupture.These gravity changes showed a trend of increase-accelerated increase-decelerated increase,similar to that of the Tangshan Ms7.8 earthquake in 1976.The maximum accumulated gravity change related to the earthquake reached 200×10-8 ms-2. | Shen Chongyang Li Hui Sun Shaoan Yang Guangliang Xuan Songbai Tan Hongbo Liu Shaoming | 2012 | Geodesy and Geodynamics2012,3,1: | 3 |
| 16 | Engineering of tungsten carbide nanoparticles for imaging-guided single 1,064 nm laser-activated dual-type photodynamic and photothermal therapy of cancer显示文摘光力学的治疗(太平洋夏季时间) 的有希望的潜力为癌症治疗造成了最低限度地侵略的治疗学的途径的发展。然而,在 hypoxic 肿瘤环境和轻穿入深度在太平洋夏季时间功效克服限制仍然是挑战。我们报导钨碳化物 nanoparticles 的工程(W 2 C NP ) 为 1,064 nm 激活激光的双类型的太平洋夏季时间和联合 theranostics。综合 W 2 C NP 允许双类型的反应的氧种类的柔韧的产生,包括氢氧根激进分子(类型我) 并且汗衫氧(类型 II ) ,用仅仅挑选 1,064 nm 激光激活,甚至在 hypoxic 肿瘤的创新有效太平洋夏季时间环境。W 2 C NP 也在 1,064 nm 激光照耀下面拥有高 photothermal 性能,这样创新的 synergistically 提高的癌症太平洋夏季时间和 photothermal 治疗的治疗学的功效。另外, photoacoustic 和 X 光检查计算了 W 2 C NP 便于肿瘤诊断和治疗的集成。发达 W 2 C 基于 theranostic nanoagents 在 hypoxic 肿瘤增加反应的氧种类的产生,改进轻穿入深度,并且便于联合 photothermal 治疗和 photoacoustic/computed 断层摄影术双模式的 bioimaging。这些属性能为先进生物医学的应用程序刺激转变金属碳化物的探索。 | Shi-Hua Li Wen Yang Yang Liu Xiao-Rong Song Rui Liu Guangliang Chen Chun-Hua Lu Huang-Hao Yang | 2018 | Nano Research2018,11,9: | 2 |
| 17 | New high-accuracy spacecraft VLBI tracking using high data-rate signal:A demonstration with Chang'E-3显示文摘As the scientific data volume in deep-space exploration rapidly grows,spacecraft heavily relies on high data-rate signals that span several megahertz to transmit data back to Earth.Employing high data-rate signals for high-accuracy radiometric interferometry can simultaneously deal with data transmission and spacecraft navigation.We demonstrate very long baseline interferometry(VLBI)tracking of the Chang’E-3 lander and rover to determine their relative lunar-surface position using downlink high data-rate signals.A new method based on the VLBI phase-referencing technique is proposed to obtain the differential phase delay,which is much more accurate than the differential group delay acquired by conventional VLBI approaches.The systemic errors among different signal channels have been well calibrated using the new method.The data from the Chang’E-3mission were then processed,and meter-level accuracy positions of the rover with respect to the lander have been obtained.This demonstration shows the feasibility of high-accuracy radiometric interferometry using high data-rate signals.The method proposed in this paper can also be applied to future deep-space navigation. | ZHOU Huan XU DeZhen CHEN ShaoWu LI HaiTao DONG GuangLiang | 2016 | Science China(Technological Sciences)2016,59,4: | 2 |
| 18 | Initial result of the Chinese Deep Space Stations' coordinates from Chinese domestic VLBI experiments显示文摘China's Lunar Exploration Program(CLEP) prompted the design and construction of the globally distributed Chinese Deep Space Network(CDSN). This network consists of Jiamusi and Kashi stations in China, and Zapala station in Argentina. However, the positions of Jiamusi and Kashi are not accurate enough for future Chinese deep space missions, and geodetic Very Long Baseline Interferometry(VLBI) is the most effective way to determine their positions. Since the CDSN stations are equipped with narrow-band receivers,they cannot participate in current international VLBI sessions in which wide-band frequencies are utilized. Thus a cooperative geodetic program of the CDSN and Chinese VLBI Network(CVN, the VLBI tracking subsystem of the CLEP) was initiated to determine their positions, in which specially designed frequencies can be utilized,and some CVN stations can act as position reference stations owing to their precise positions from long-term international VLBI observations. Primary results have been obtained from the CDSN–CVN combined domestic VLBI experiments from September 28, 2014, through December 10, 2015. The positions of Jiamusi and Kashi are determined to be better than 10-mm precision in the X, Y, and Z directions, which are improved by a factor of approximately 20 over their a priori values. | Guangliang DONG Dezhen XU Haitao LI Huan ZHOU | 2017 | Science China(Information Sciences)2017,60,1: | 2 |
| 19 | Danhong Injection Inhibits the Development of Atherosclerosis in Both Apoe?/? and Ldlr?/? Mice显示文摘 | Yuanli Chen Mengyang Liu Tao Zhao Buchang Zhao Lifu Jia Yan Zhu Boli Zhang Xiumei Gao Guangliang Li Xiaoju Li Rong Xiang Jihong Han Yajun Duan | 2014 | Journal of Cardiovascular Pharmacology2014,,5: | 1 |
| 20 | Preparation ofCo2W type hexagonal ferrite used in the load side of isolator 显示文摘 | GONG Jian XU Guangliang LI Yangxing | 2011 | Materials Science Forum2011,687,: | 1 |