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| 1 | Investigation on the development of deep space exploration显示文摘Deep space exploration is the term used for the exploration of the Moon and the celestial bodies or space beyond the Moon, which is an important part of human space activities. Firstly, the development of deep space exploration (not including the Moon) during the last few decades is summarized. Secondly, the development trend of different space countries and regions is analyzed. Then the experience and enlightenment of deep space exploration are briefly discussed. Some suggestions for China's future deep space exploration are given in the end. | WU WeiRen LIU WangWang QIAO Dong JIE DeGang | 2012 | Science China(Technological Sciences)2012，55，4： | 14 |
| 2 | Corrigendum to “The Tianwen-1 Guidance, Navigation, and Control for Mars Entry, Descent, and Landing”显示文摘In the article titled“The Tianwen-1 Guidance,Navigation,and Control for Mars Entry,Descent,and Landing”[1],there was an error in Figure 9(b).On the y-axis,the data read q1,q2,and q1.It should have read q1,q2,and q3.This is updated as shown in Figure 1 below. | Xiangyu Huang Maodeng Li Xiaolei Wang Jinchang Hu Yu Zhao Minwen Guo Chao Xu Wangwang Liu Yunpeng Wang Ce Hao Lijia Xu | 2021 | Space(Science & Technology)2021，，1： | 2 |
| 3 | 增温和放牧对高寒草甸凋落物分解及其养分释放的影响不依赖于凋落物品质显示文摘在放牧生态系统中,增温、放牧和调落物品质共同决定着凋落物分解和养分释放。然而,在以往的研究中这些因子的效应通常被单独地研究。在本研究中,我们在青藏高原高寒草甸开展了一个昼夜非对称增温和中度放牧两因子的调落物分解试验。从每个处理中收集了调落物样品,这些调落物一部分放在它们的来源处理小区,另一部分放在其他处理小区以此来探究增温、放牧以及调落物品质对调落物分解和养分释放的影响。研究结果表明,增温而不是放牧显著增加了调落物质量的损失、单位面积全碳、全氮以及全磷含量的损失,这主要是因为增温增加了落物生物量和分解速率。然而,尽管同时增温放牧处理也加快了调落物分解速率,但由于降低了调落物生物量,所以增温放牧处理并没有显著影响单位面积的凋落物碳和养分释放量。相比木质素含量和碳氮比而言,季节性土壤平均温度能够更好地预测调落物分解速率。增温和放牧对调落物分解存在交互作用,但它们和调落物品质对调落物的影响均不存在交互作用。单位面积的总氮释放的温度敏感性要高于总磷。因此,我们的结果表明,增温对调落物分解以及养分释放的影响要显著大于调落物品质变化对其分解的影响。在高寒草甸,氮释放的增加可能会间接导致土壤磷有效性的缺乏。 | Bowen Li Wangwang Lv Jianping Sun Lirong Zhang Lili Jiang Yang Zhou Peipei Liu Huan Hong Qi Wang Wang A Suren Zhang Lu Xia Zongsong Wang Tsechoe Dorji Ailing Su Caiyun Luo Zhenhua Zhang Shiping Wang | 2022 | Journal of Plant Ecology2022，15，5： | 1 |
| 4 | Multiple amino acid substitutions are involved in the adaptation of H9N2 avian influenza virus to mice显示文摘 | Rui Wu Hongbo Zhang Keli Yang Wangwang Liang Zhongliang Xiong Zewen Liu Xuehai Yang Huabin Shao Xinmin Zheng Mingxin Chen Diping Xu | 2009 | Veterinary Microbiology2009，，1： | 1 |
| 5 | NAD^(+) salvage governs the immunosuppressive capacity of mesenchymal stem cells显示文摘Mesenchymal stem/stromal cells(MSCs)possess robust immunoregulatory functions and are promising therapeutics for inflammatory disorders.This capacity is not innate but is activated or‘licensed’by inflammatory cytokines.The licensing mechanism remains unclear.Here,we examined whether inflammatory cytokines metabolically reprogrammed MSCs to confer this immunoregulatory capacity.In response to stimulation by inflammatory cytokines,MSCs exhibited a dramatic increase in the consumption of glucose,which was accompanied by an enhanced use of nicotinamide adenine dinucleotide(NAD^(+))and increased expression of nicotinamide phosphoribosyltransferase(NAMPT),a central enzyme in the salvage pathway for NAD^(+) production.When NAD^(+) synthesis was blocked by inhibiting or depleting NAMPT,the immunosuppressive function of MSCs induced by inflammatory cytokines was greatly attenuated.Consequently,when NAD^(+) metabolism in MSCs was perturbed,their therapeutic benefit was decreased in mice suffering from inflammatory bowel disease and acute liver injury.Further analysis revealed that NAMPT-driven production of NAD^(+) was critical for the inflammatory cytokine-induced increase in glycolysis in MSCs.Furthermore,the increase in glycolysis led to succinate accumulation in the tricarboxylic acid cycle,which led to hypoxia-inducible factor 1α(HIF-1α)stabilization and subsequently increased the transcription of key glycolytic genes,thereby persistently maintaining glycolytic flux.This study demonstrated that unlike its proinflammatory role in immune cells,NAD^(+) metabolism governs the anti-inflammatory function of MSCs during inflammation. | Jiankai Fang Pengbo Hou Shisong Liu Muqiu Zuo Zhanhong Liu Wangwang Chen Yuyi Han Yanan Li Tingting Wang Chao Feng Peishan Li Changshun Shao Yufang Shi | 2023 | Cellular & Molecular Immunology2023，20，10： | 1 |
| 6 | Effects of PMDI Treatments on Thermal Properties of Silvergrass Reinforced High Density Polyethylene Composites显示文摘 | Xue Dong Yu Wangwang Liu Qin | 2013 | Applied Mechanics and Materials2013，，： | 1 |
| 7 | Variations in Dissolved Methane in the Yellow Sea During the Spring Algal Blooms of 2009显示文摘Methane (CH4) is an important greenhouse gas and oceans are net sources of atmospheric CH4. The effects of environ- mental factors on the CH4 variation during different phases of the spring algal blooms were examined during two cruises conducted in the Yellow Sea (YS) from February to April of 2009. During the pre-bloom period from February to March, low CH4 saturation (< 134%) was observed in the surface water, except at two nearshore stations where the CH4 levels were above 140% in March due to mixing with the coastal water. During the bloom period, CH4 increased obviously at two bloom-tracking stations, especially at the surface with mean saturations of 140% and 170%. The increase in CH4 concentration/saturation is thought to be the result of in situ CH4 production. The particulate organic carbon (POC) and chlorophyll a contents were believed to be important factors that influ- enced the CH4 production. In addition, the presence of different dominant phytoplankton species and the grazing pressure may have stimulated the CH4 production by supplying potential methanogenic substrates (such as dimethylsulphoniopropionate (DMSP)). Both the incubation data and the in situ estimations further evidenced the significant influence of the spring blooms on the CH4 production. The calculated sea-to-air CH4 fluxes during the bloom period were not significantly higher than those during the pre-bloom period despite the bloom-increased CH4 saturation. This is due to the variation in physical forcing (such as wind speed), which is the main driver for determining the CH4 flux. Finally, we estimated the annual CH4 flux in the YS as 9.0 μmol m 2 d 1;the findings suggest that the YS is a natural source of atmospheric CH4. | YE Wangwang ZHANG Guiling LI Peipei ZHOU Feng LIU Chenggang | 2019 | Journal of Ocean University of China2019，18，4： | 1 |
| 8 | 高山嵩草植物群落花期物候对增水的响应比对恒定增温和逐步增温的响应更敏感显示文摘有研究表明长期观测的植物花期物候变化温度敏感性与野外控制恒定增温试验所得出的花期物候温度敏感性结果不一致,这可能是由于两种观测方法具有不同的增温模式引起的。因为长期观测的气候变暖实际上是气温逐渐升高的情景,而野外控制增温试验所增加的温度是突然增加且每年保持不变。不同的增温模式是否会导致不同的结果目前还缺乏野外试验证据。此外,不同增温模式的效应还受到降水变化的调控。因此,我们于2015–2018年在高寒高山嵩草草甸开展了一项恒定增温(和对照相比,每年保持恒定增温1°C)和逐步增温(和对照相比,2015年增温0.25°C,以后逐年在前一年基础上再增温0.25°C,到2018年相比对照增温1°C)以及与增水(100%/50%)耦合的野外控制试验。研究结果发现,增温模式并没有显著改变群落花期物候。然而,增水显著提前了早花植物和中花植物的初花期,提前了早花植物的末花期,推迟了中花植物的末花期。增水处理并没有显著改变早花植物的开花持续期,但却显著延长了中花植物的开花持续期,进而延长了该群落的开花持续期。增温速率和增水处理并没有显著的交互作用。前一年的干旱会显著抑制第二年该植物群落的现存最大开花数。因此,无论增温模式如何,降水的改变对该高山嵩草植物群落花期物候的影响要大于增温对其的影响。 | Bowen Li Jianping Sun Shiping Wang Wangwang Lv Yang Zhou Peipei Liu Qi Wang Wang A Suren Zhang Lu Xia Huan Hong Lili Jiang Caiyun Luo Zhenhua Zhang Shilong Piao Yanfen Wang Tsechoe Dorji | 2023 | Journal of Plant Ecology2023，16，2： | 0 |
| 9 | Entry vehicle control system design for the Tianwen-1 mission显示文摘The entry vehicle for the Tianwen-1 mission successfully landed on the surface of Mars at 7:18 AM BJT on May 15,2021.This successful landing made China the first country to orbit,land,and release a rover in their first attempt at the Mars exploration.The guidance,navigation,and control(GNC)system plays a crucial role in the entry,descent,and landing(EDL)phases.This study focused on the attitude control component of the GNC system design.The EDL phase can be divided into several sub-phases,namely the angle of attack control phase,lift control phase,parachute descent phase,and powered descent phase.Each sub-phase has unique attitude control requirements and challenges.This paper introduces the key aspects of designing attitude controllers for each phase.Furthermore,flight results are presented and analyzed. | Jinchang Hu Xiangyu Huang Maodeng Li Minwen Guo Chao Xu Yu Zhao Wangwang Liu Xiaolei Wang | 2022 | Astrodynamics2022，6，1： | 0 |
| 10 | Pectin-chitosan complex: Preparation and application in colon-specific capsule显示文摘Pectin-chitosan complex was prepared as a candidate material for colon-specific capsule.First,the effects of beating on the properties of complex films were explored.Fourier transform infrared(FT-IR)spectroscopy was used to analyze the reaction mechanics,and an in vitro simulation experiment was performed to determine the degradation performance.Second,the capsule was prepared using pectin-chitosan complex as the main raw material;its targeting effect was evaluated and analyzed.Results indicated that the film became smooth and compact by beating.FT-IR data indicated that cross-linking occurred between the hydroxyl group of pectin and the amino group of chitosan to form a network structure.In vitro experiment showed that the pectin-chitosan complex film could not be degraded in the simulated gastric and intestinal fluids.However,pectin-chitosan complex could be degraded in the simulated colonic fluid,so it could be a potential candidate for colon-specific capsule.Because the complex has no ability for forming hard capsule,the carrageenan and starch were added to increase the flexibility,gelation,transparency and mechanical properties of the film.The preferred composition suitable for preparing the capsule was a mass ratio(2:1:1)of pectin-chitosan/carrageenan/starch mixture.The capsule showed excellent features in terms of shape,water content,and brittleness.The drug release rate reached 93.33%in colonic fluid for 1 h when bovine serum albumin was the model drug.Therefore,pectin-chitosan may be considered as a new material for colon-targeted capsule. | Wu Li Wang Hao Zhu Xiaohua Hou Yinchen Liu Wangwang Yang Gongming Jiang Aimin | 2015 | International Journal of Agricultural and Biological Engineering2015，8，4： | 0 |
| 11 | The Tianwen-1 Guidance, Navigation, and Control for Mars Entry, Descent, and Landing显示文摘Tianwen-1,the first mission of China’s planetary exploration program,accomplished its goals of orbiting,landing,and roving on the Mars.The entry,descent,and landing(EDL)phase directly determines the success of the entire mission,of which the guidance,navigation,and control(GNC)system is crucial.This paper outlines the Tianwen-1 EDL GNC system design by introducing the GNC requirements followed by presenting the GNC system architecture and algorithms to meet such requirements.The actual flight results for the whole EDL phase are also provided in this paper. | Xiangyu Huang Maodeng Li Xiaolei Wang Jinchang Hu Yu Zhao Minwen Guo Chao Xu Wangwang Liu Yunpeng Wang Ce Hao Lijia Xu | 2021 | Space(Science & Technology)2021，，1： | 0 |
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