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| 1 | Land-atmosphere-ocean coupling associated with the Tibetan Plateau and its climate impacts显示文摘This paper reviews recent advances regarding land-atmosphere-ocean coupling associated with the Tibetan Plateau(TP)and its climatic impacts.Thermal forcing over the TP interacts strongly with that over the Iranian Plateau,forming a coupled heating system that elevates the tropopause,generates a monsoonal meridional circulation over South Asia and creates conditions of large-scale ascent favorable for Asian summer monsoon development.TP heating leads to intensification and westward extension(northward movement)of the South Asian High(Atlantic Intertropical Convergence Zone),and exerts strong impacts on upstream climate variations from North Atlantic to West Asia.It also affects oceanic circulation and buoyancy fields via atmospheric stationary wave trains and air-sea interaction processes,contributing to formation of the Atlantic Meridional Overturning Circulation.The TP thermal state and atmospheric-oceanic conditions are highly interactive and Asian summer monsoon variability is controlled synergistically by internal TP variability and external forcing factors. | Yimin Liu Mengmeng Lu Haijun Yang Anmin Duan Bian He Song Yang Guoxiong Wu | 2020 | National Science Review2020,7,3: | 21 |
| 2 | Functional traits of tree species with phylogenetic signal co-vary with environmental niches in two large forest dynamics plots显示文摘Aims While using phylogenetic and functional approaches to test the mechanisms of community assembly,functional traits often act as the proxy of niches.However,there is little detailed knowledge regarding the correlation between functional traits of tree species and their niches in local communities.We suggest that the co-varying correlation between functional traits and niches should be the premise for using phylogenetic and functional approaches to test mechanisms of community assembly.Using functional traits,phylogenetic and environmental data,this study aims to answer the questions:(i)within local communities,do functional traits of co-occurring species covary with their environmental niches at the species level?and(ii)what is the key ecological process underlying community assembly in Xishuangbanna and Ailaoshan forest dynamic plots(FDPs)?Methods We measured seven functional traits of 229 and 36 common species in Xishuangbanna and Ailaoshan FDPs in tropical and subtropical China,respectively.We also quantified the environmental niches for these species based on conditional probability.We then analyzed the correlations between functional traits and environmental niches using phylogenetic independent contrasts.After examining phylogenetic signals of functional traits using Pagel’sλ,we quantified the phylogenetic and functional dispersion along environmental gradients within local tree communities.Important Findings For target species,functional traits do co-vary with environmental niches at the species level in both of the FDPs,supporting that functional traits can be used as a proxy for local-scale environmental niches.Functional traits show significant phylogenetic signals in both of the FDPs.We found that the phylogenetic and functional dispersion were significantly clustered along topographical gradients in the Ailaoshan FDP but overdispersion in the Xishuangbanna FDP.These patterns of phylogenetic and functional dispersion suggest that environmental filtering plays a key role in structuring local tree assemblages in Ailaoshan FDP,while competition exclusion plays a key role in Xishuangbanna FDP. | Jie Yang Xiuqin Ci Mengmeng Lu Guocheng Zhang Min Cao Jie Li Luxiang Lin | 2014 | Journal of Plant Ecology2014,7,2: | 16 |
| 3 | Counteraction of ABA-Mediated Inhibition of Seed Germination and Seedling Establishment by ABA Signaling Terminator in Arabidopsis显示文摘Seed germination and seedling establishment are important for the reproductive success of plants,but seeds and seedlings typically encounter constantly changing environmental conditions.By inhibiting seed germination and post-germinative growth through the PYR1/PYL/RCAR ABA receptors and PP2C co-receptors,the phytohormone abscisic acid(ABA)prevents premature germination and seedling growth under unfavorable conditions.However,little is known about how the ABA-mediated inhibition of seed germination and seedling establishment is thwarted.Here,we report that ABA Signaling Terminator(ABT),a WD40 protein,efficiently switches off ABA signaling and is critical for seed germination and seedling establishment.ABT is induced by ABA in a PYR1/PYL/RCAR-PP2C-dependent manner.Overexpression of ABT promotes seed germination and seedling greening in the presence of ABA,whereas knockout of ABT has the opposite effect.We found that ABT interacts with the PYR1/PYL/RCAR and PP2C proteins,interferes with the interaction between PYR1/PYL4 and ABI1/ABI2,and hampers the inhibition of ABI1/ABI2 by ABA-bound PYR1/PYL4,thereby terminating ABA signaling.Taken together,our results reveal a core mechanism of ABA signaling termination that is critical for seed germination and seedling establishment in Arabidopsis. | Zhijuan Wang Ziyin Ren Chunhong Cheng Tao Wang Hongtao Ji Yang Zhao Zhiping Deng Liya Zhi Jingjing Lu Xinying Wu Shimin Xu Mengmeng Cao Hongtao Zhao Liu Liu Jiankang Zhu Xia Li | 2020 | Molecular Plant2020,13,9: | 10 |
| 4 | A new unconventional HLA-A2-restricted epitope from HBV core protein elicits antiviral cytotoxic T lymphocytes显示文摘细胞毒素的 T 房间(CTL ) 在肝炎 B 的控制起一个关键作用病毒(HBV ) 感染和病毒的清理。然而,大多数识别 CTL epitopes 从遗传型 A 和 D 的 HBV 被导出,并且很少在在亚洲更流行的遗传型 B 和 C 的病毒被定义。因为 HBV 核心蛋白质(HBc ) 是最保守、产生免疫性的部件,在这研究,我们使用了盖住 HBc 屏蔽并且识别特定的 CTL epitopes 的一个重叠 9-mer 肽水池。异乎寻常的 HLA-A2-restricted epitope HBc141149 被结晶化分析发现,在结构上描绘了。immunogenicity 和 anti-HBV 活动进一步在 HBV 和 HLA-A2 被决定转基因的老鼠。最后,我们证明在 HBc141149 epitope 的变化与病毒的参数被联系,在 HBV 的疾病前进感染了病人。我们的数据因此提供卓见进这异乎寻常的 epitope 绑定的结构特征给 MHC-I 分子,以及 epitope 特定的 CTL 活动在 HBV 安排 T 房间反应和有免疫力的避免感染的病人。 | Lu Sun Yu Zhang Bao Zhao Mengmeng Deng Jun Liu Xin Li Junwei Hou Mingming Gui Shuijun Zhang Xiaodong Li George F. Gao Songdong Meng | 2014 | Protein & Cell2014,5,4: | 7 |
| 5 | Changes in nitrogen budget and potential risk to the environment over 20 years(1990–2010) in the agroecosystems of the Haihe Basin, China显示文摘The nitrogen balance can serve as an indicator of the risk to the environment of nitrogen loss from agricultural land. To investigate the temporal and spatial changes in agricultural nitrogen application and its potential threat to the environment of the Haihe Basin in China, we used a database of county-level agricultural statistics to calculate agricultural nitrogen input, output,surplus intensity, and use efficiency. Chemical fertilizer nitrogen input increased by 51.7% from1990 to 2000 and by 37.2% from 2000 to 2010, concomitant with increasing crop yields.Simultaneously, the nitrogen surplus intensity increased by 53.5% from 1990 to 2000 and by16.5% from 2000 to 2010, presenting a continuously increased environmental risk. Nitrogen use efficiency decreased from 0.46 in 1990 to 0.42 in 2000 and remained constant at 0.42 in 2010,partly due to fertilizer composition and type improvement. This level indicates that more than half of nitrogen inputs are lost in agroecosystems. Our results suggest that although the improvement in fertilizer composition and types has partially offset the decrease in nitrogen use efficiency, the environmental risk has still increased gradually over the past 20 years, along with the increase in crop yields and nitrogen application. It is important to achieve a better nitrogen balance through more effective management to significantly reduce the environmental risk,decrease nitrogen surplus intensity, and increase nitrogen use efficiency without sacrificing crop yields. | Mengmeng Zheng Hua Zheng Yingxia Wu Yi Xiao Yihua Du Weihua Xu Fei Lu Xiaoke Wang Zhiyun Ouyang | 2015 | Journal of Environmental Sciences2015,27,2: | 6 |
| 6 | Strabismus surgery distribution during 10-year period in a tertiary hospital显示文摘 | Jiao Yonghong Zhu Yunting Zhou Zhen Jie Ying Wang Jinghui Lu Wei Wu Xiao Kan Mengmeng Zhao Guohong | 2014 | Chinese Medical Journal2014,,16: | 5 |
| 7 | Review of Chinese atmospheric science research over the past 70 years: Atmospheric physics and atmospheric environment显示文摘Since the founding of the People’s Republic of China 70 years ago,the subject of atmospheric physics and atmospheric environment has developed rapidly in China,providing important support for the development of atmospheric science and guarantee for the development of national economy.In this paper,the general advancement of atmospheric physics and atmospheric environment in last 70 years was described.The main research progress of atmospheric physics and atmospheric environment in the past 40 years of reform and opening-up was reviewed,the outstanding research achievements since the 21 st century were summarized,the major problems and challenges are pointed out,and the key directions and suggestions for future development are put forward. | Tijian WANG Taichang GAO Hongsheng ZHANG Maofa GE Hengchi LEI Peichang ZHANG Peng ZHANG Chunsong LU Chao LIU Hua ZHANG Qiang ZHANG Hong LIAO Haidong KAN Zhaozhong FENG Yijun ZHANG Xiushu QIE Xuhui CAI Mengmeng LI Lei LIU Shengrui TONG | 2019 | Science China Earth Sciences2019,62,12: | 5 |
| 8 | Insights into self-healing behavior and mechanism of dicalcium phosphate dihydrate coating on biomedical Mg显示文摘Self-healing coatings have been developed as smart surface coatings for Mg and its alloys to retain local corrosion from the coating damages.In this study,we prepared dicalcium phosphate dihydrate(DCPD)coating on biomedical Mg,and found that the artificial scratches in DCPD coating can be efficiently sealed by anti-corrosive products in both Hank's and normal saline(NS)solutions.Besides,the in-depth study revealed that DCPD was served as not only a physical barrier but also a self-healing agent,demonstrating an autonomous self-healing coating without embedded extra corrosion inhibitors.Moreover,Hank's solution provided foreign-aid filmforming ions to promote self-healing behavior.The findings might offer new opportunities for further studies and applications of efficient self-healing coatings on biodegradable Mg implants. | Qiangsheng Dong Xingxing Zhou Yuanjia Feng Kun Qian Huan Liu Mengmeng Lu Chenglin Chu Feng Xue Jing Bai | 2021 | Bioactive Materials2021,6,1: | 4 |
| 9 | Microcavity top-emission perovskite light-emitting diodes显示文摘Light-emitting diodes(LEDs)based on perovskites show great potential in lighting and display applications.However,although perovskite films with high photoluminescence quantum efficiencies are commonly achieved,the efficiencies of perovskite LEDs are largely limited by the low light out-coupling efficiency.Here,we show that high-efficiency perovskite LEDs with a high external quantum efficiency of 20.2% and an ultrahigh radiant exitance up to 114.9mWcm^(−2) can be achieved by employing the microcavity effect to enhance light extraction.The enhanced microcavity effect and light outcoupling efficiency are confirmed by the study of angle-dependent emission profiles.Our results show that both the optical and electrical properties of the device need to be optimized to achieve high-performance perovskite LEDs. | Yanfeng Miao Lu Cheng Wei Zou Lianghui Gu Ju Zhang Qiang Guo Qiming Peng Mengmeng Xu Yarong He Shuting Zhang Yu Cao Renzhi Li Nana Wang Wei Huang Jianpu Wang | 2020 | Light(Science & Applications)2020,9,1: | 4 |
| 10 | Subcarrier Requirement Analysis for Downlink OFDMA Cellular System显示文摘In Orthogonal frequency division multiple access(OFDMA) cellular system,the user at the different location requires different number of subcarriers to satisfy the data rate requirement.We determine average subcarrier requirement for downlink OFDMA cellular system without power control based on the Interference to signal ratio(ISR).A typical downlink OFDMA cellular system model is proposed.Based on this model,we calculate the Cumulative distribution function(CDF) of ISR,and obtain the analytical expression of the average number of subcarriers required in the whole cell.Through numerical calculation and Monte-Carlo simulations,we analyze the impact of the various parameters on the average number of subcarriers required of the downlink OFDMA cellular system in random subcarrier allocation policy.And the results are compared with that in grouping subcarrier allocation and adaptive subcarrier allocation.These study results are useful in the performance evaluation,design,planning of resources and call admission control of OFDMA cellular networks like LTE. | LU Weifeng GU Mengmeng YANG Luxi | 2017 | Chinese Journal of Electronics2017,26,5: | 3 |
| 11 | MIT1, encoding a 15-cis-ζ-carotene isomerase, regulates tiller number and stature in rice显示文摘Lateral branching is an important determinant of shoot architecture and crop yield. The plant hormone strigolactone (SL) inhibits lateral bud outgrowth in various plant species. Deficiencies in SL biosynthesis and signal transduction result in excessive outgrowth of lateral buds (Stirnberg et al., 2002;Sorefan et al., 2003). | Lihua Liu Mengmeng Ren Peng Peng Yan Chun Lu Li Jinfeng Zhao Jingjing Fang Lixiang Peng Jijun Yan Jinfang Chu Yiqin Wang Shoujiang Yuan Xueyong Li | 2021 | Journal of Genetics and Genomics2021,48,1: | 3 |
| 12 | Anti-VEGF therapy prevents Müller intracellular edema by decreasing VEGF-A in diabetic retinopathy显示文摘Background:Although vascular endothelial growth factor A(VEGF-A)is known to play a key role in causing retinal edema,whether and how VEGF-A induces intracellular edema in the retina still remains unclear.Methods:Sprague-Dawley rats were rendered diabetic with intraperitoneal injection of streptozotocin.Intravitreal injection of ranibizumab was performed 8 weeks after diabetes onset.rMC-1 cells(rat Müller cell line)were treated with glyoxal for 24 h with or without ranibizumab.The expression levels of inwardly rectifying K^(+)channel 4.1(Kir4.1),aquaporin 4(AQP4),Dystrophin 71(Dp71),VEGF-A,glutamine synthetase(GS)and sodium-potassium-ATPase(Na^(+)-K^(+)-ATPase)were examined using Western blot.VEGF-A in the supernatant of the cell culture was detected with ELISA.The intracellular potassium and sodium levels were detected with specific indicators.Results:Compared with normal control,protein expressions of Kir4.1 and AQP4 were down-regulated significantly in diabetic rat retinas,which were prevented by ranibizumab.The above changes were recapitulated in vitro.Similarly,the intracellular potassium level in glyoxal-treated rMC-1 cells was increased,while the intracellular sodium level and Na^(+)-K^(+)-ATPase protein level remained unchanged,compared with control.However,ranibizumab treatment decreased intracellular sodium,but not potassium.Conclusion:Ranibizumab protected Müller cells from diabetic intracellular edema through the up-regulation of Kir4.1 and AQP4 by directly binding VEGF-A.It also caused a reduction in intracellular osmotic pressure. | Tianqin Wang Chaoyang Zhang Hai Xie Mengmeng Jiang Haibin Tian Lixia Lu Guo-Tong Xu Lin Liu Jingfa Zhang | 2021 | Eye and Vision2021,8,1: | 3 |
| 13 | Spatio-temporal Evolution and Driving Factors of the High-quality Development of Provincial Tourism in China显示文摘Accelerating the promotion of high-quality development of tourism(HQDT) is of great significance to the sustainable development of tourism. This paper defined the concept of HQDT, and then built an evaluation system for HQDT measurement to analyze the spatio-temporal evolution characteristics of China’s HQDT based on provincial panel data from 2010 to 2019, using Geodetector to explore the similarities and differences between driving factors of HQDT and tourism development scale(TDS). The results show that:1) Taking the development concepts of innovation, coordination, green, openness and sharing as the guidance, and considering the organic unity of quantity and quality, the evaluation index system of the HQDT consists of six dimensions of economic stability, innovation driving, coordination and linkage, green and sustainability, openness and cooperation, and sharing and harmony, which respectively represent the basis, momentum, means, orientation, direction and purpose of the HQDT;2) The level of China’s HQDT shows an upward trend, presenting the characteristics of eastern region > central region > western region > northeastern region in 2019. The regional differences in China’s HQDT show a downward trend, and the intra-regional differences have replaced the inter-regional differences as the main source of regional differences;3) China’s HQDT shows the characteristics of higher in the east and lower in the west along the Hu line, while the improvement speed of HQDT shows the characteristics of faster in the west and slower in the east, making the decline of east-west differentiation of China’s HQDT and the movement of the gravity center towards southwest;4) Both HQDT and TDS are obviously driven by tourism capital investment and regional consumption. In terms of differences, the HQDT is more driven by government guidance, innovation driving force, and opening up, while the main driving factors of TDS are more biased toward capital elements and hardware facilities, including informatization, tourism resource, traffic, and eco-environment. | WANG Xinyue WANG Mengmeng LU Xuejing GUO Lizhen ZHAO Ruixin JI Ranran | 2022 | Chinese Geographical Science2022,32,5: | 2 |
| 14 | Highly efficient perovskite solar cells based on symmetric hole transport material constructed with indaceno[1,2-b:5,6-b’]dithiophene core building block显示文摘Two novel hole transport materials (HTMs) with indaceno[1,2-b:5,6-b’]dithiophene (IDT) as core building blocks,termed IDT1 and IDT2,were designed and synthesized.The side alkyl chains were introduced to regulate and control the morphology and stacking behavior of HTMs,and the peripheral triarylamine arms were introduced to adjust the energy levels and to facilitate efficient hole transport.Applied in mesoporous structured perovskite solar cells (PSCs),HTM IDT1 achieved higher power conversion efficiency (PCE,19.55%) and better stability than Spiro-OMeTAD (19.25%) and IDT2 (15.77%) based PSC.These results suggest the potential of IDTl as a promising HTM for PSCs. | Cheng Wu Cheng Chen Li Tao Xingdong Ding Mengmeng Zheng Hongping Li Gongqiang Li Hongfei Lu Ming Cheng | 2020 | Journal of Energy Chemistry2020,29,4: | 2 |
| 15 | 3D-cubic interconnected porous Mg-based scaffolds for bone repair显示文摘Mg-based porous materials,as potential bone tissue engineering scaffolds,are considered an attractive strategy for bone repair owing to favorable biodegradability,good biocompatibility and suitable mechanical properties.In this work,3D-cubic interconnected porous Mg–xZn–0.3Ca(x=0,3,6)scaffolds were prepared to obtain desirable pore structures with a mean porosity up to 73%and main pore size of 400–500μm,which pore structures were close to the human cancellous bone.The structure–property relationships in the present scaffolds were analyzed by experiments and theoretical models of generalized method of cells(GMC).Mg–xZn–0.3Ca scaffolds exhibited good compression properties with a maximum above 5MPa in yield strength and about 0.4GPa in elastic modulus.This was attributed to not only the alloy strengthening but also the large minimum solid area.On the other hand,the scaffolds showed undesirable and relatively serious degradation behavior in Hank’s solution,resulting from Zn addition in Mg-based scaffolds and the high surface area ratio in the pore structure.Therefore,surface modifications are worth studying for controlled degradation in the future.In conclusion,this research would explore a novel attempt to introduce 3D-cubic pore structure for Mg-based scaffolds,and provide new insights into the preparations of Mg-based scaffolds with good service performances for bone repair. | Qiangsheng Dong Yang Li Huiqin Jiang Xingxing Zhou Huan Liu Mengmeng Lu Chenglin Chu Feng Xue Jing Bai | 2021 | Journal of Magnesium and Alloys2021,9,4: | 2 |
| 16 | Non-mechanical behaviors of soft clay in two-dimensional electro-osmotic consolidation显示文摘To investigate the soil behaviors in a direct current field on both spatial and temporal scales, a 1: 5 scale model test was conducted in laboratory to simulate the two-dimensional (2D) electro-osmotic consolidation of soft clay foundation. Volume of drainage, intensity, voltage, water content and pH value of water collected in the cathodes were monitored. The pH values of soil and the mass of anodes were measured before and after the test. The test results indicate that the unsaturated state, resultant from fissures induced by the differences in water contents, is favorable to dynamic compaction of soil during electro-osmotic drainage. The results also demonstrate that water content, degree of saturation and electric potential distributions can be used to deduce the electro-osmotic drainage process. Water content of soil decreases first near electrodes, while keeps nearly constant in the center of the model. The area with constant water content is larger than half of the sample surface. Moving anodes towards cathodes by about one third of the electrode spacing is effective to improve the treatment effect after electro-osmosis stops due to the large resistance. Moreover, it is observed that during electro-osmosis, the corrosion rate of anodes becomes smaller, while the variation in pH values of soil near anodes becomes larger. | Ying Li Xiaonan Gong Mengmeng Lu Yanli Tao | 2012 | Journal of Rock Mechanics and Geotechnical Engineering2012,4,3: | 2 |
| 17 | Adverse Effect of Nonalcoholic Fatty Liver Disease on the Therapeutic Response in Patients with Chronic Hepatitis B显示文摘Background and Aims:The impact of nonalcoholic fatty liver disease(NAFLD)on the treatment outcome of chronic hepatitis B(CHB)is undefined and deserves an in-depth investigation.Methods:Histologically-proven CHB receiving first-line antiviral regimens as initial therapy was enrolled and grouped by the concurrence of NAFLD,and followed up at six monthly intervals.Therapeutic response related data were recorded and compared at multiple time points.Kaplan-Meier and Cox regression analyses were utilized to estimate the impact of NAFLD on complete virological response(CVR).Results:We enrolled 267 patients(CHB:164;CHB with NAFLD:103)with comparable follow-up durations.They were also comparable in baseline HBV DNA levels and HBeAg positivity.Patients with concomitant NAFLD showed less significant decline in HBV DNA,qHBsAg,pgRNA,and liver enzyme levels over time;moreover,their cumulative incidences of CVR were significantly lower and that of low-level viremia(LLV)were significantly higher at 6,12,18,24 months.First CVR of CHB was delayed with the presence NAFLD(11.0 vs.7.0 months,p<0.001)and further prolonged with higher grade of liver steatosis(Grade 2–3 vs.1:13.0 vs.9.0 months).On multivariate analysis,HBeAg positivity(HR:0.650,p=0.036),grade of steatosis(G2[HR:0.447,p=0.004];G3[HR:0.085,p=0.002])and HBV DNA(log10 IU/mL)(HR:0.687,p<0.001)were significantly associated with delayed CVR,whereas grade of necroinflammation(HR:1.758,p<0.001)accelerated the CVR.Conclusions:In CHB patients receiving initial antiviral therapy,NAFLD was associated with higher levels of HBV DNA,pgRNA,and liver enzymes,and higher incidence of LLV and delayed CVR. | Siyu Zhang Xiaoxiao Zhang Huiming Jin Yao Dou Lu Li Xiwei Yuan Chen Dong Mengmeng Hou Yue-min Nan Jia Shang | 2023 | Journal of Clinical and Translational Hepatology2023,11,1: | 1 |
| 18 | Equal strain consolidation for stone columns reinforced foundation 显示文摘 | XIE Kanghe LU Mengmeng LIU Ganbin | 2009 | International Journal for Numerical and Analytical Methods in Geomechanics2009,33,: | 1 |
| 19 | Ion therapy of pulmonary fibrosis by inhalation of ionic solution derived from silicate bioceramics显示文摘Pulmonary fibrosis(PF)is a chronic and progressively fatal disease,but clinically available therapeutic drugs are limited due to efficacy and side effects.The possible mechanism of pulmonary fibrosis includes the damage of alveolar epithelial cells II(AEC2),and activation of immune cells such as macrophages.The ions released from bioceramics have shown the activity in stimulating soft tissue derived cells such as fibroblasts,endothelia cells and epithelia cells,and regulating macrophage polarization.Therefore,this study proposes an“ion therapy”approach based on the active ions of bioceramic materials,and investigates the therapeutic effect of bioactive ions derived from calcium silicate(CS)bioceramics on mouse models of pulmonary fibrosis.We demonstrate that silicate ions significantly reduce pulmonary fibrosis by simultaneously regulating the functions of AEC2 and macrophages.This result suggests potential clinical applications of ion therapy for lung fibrosis. | Tao Chen Zhaowenbin Zhang Dong Weng LiQin Lu XiaoYa Wang Min Xing Hui Qiu MengMeng Zhao Li Shen Ying Zhou Jiang Chang Hui-Ping Li | 2021 | Bioactive Materials2021,6,10: | 1 |
| 20 | Research on Indoor Thermal Environment in Winter and Retrofit Requirement in Existing Residential Buildings in China's Northern Heating Region显示文摘 | Chuanzhi Liang Mengmeng Lu Yong Wu | | Energy Procedia0,16,: | 1 |