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| 1 | Altered trends in carbon uptake in China’s terrestrial ecosystems under the enhanced summer monsoon and warming hiatus显示文摘The carbon budgets in terrestrial ecosystems in China are strongly coupled with climate changes.Over the past decade,China has experienced dramatic climate changes characterized by enhanced summer monsoon and decelerated warming.However,the changes in the trends of terrestrial net ecosystem production(NEP)in China under climate changes are not well documented.Here,we used three ecosystem models to simulate the spatiotemporal variations in China's NEP during 1982–2010 and quantify the contribution of the strengthened summer monsoon and warming hiatus to the NEP variations in four distinct climatic regions of the country.Our results revealed a decadal-scale shift in NEP from a downtrend of–5.95 Tg C/yr^2(reduced sink)during 1982–2000 to an uptrend of 14.22 Tg C/yr^2(enhanced sink)during 2000–10.This shift was essentially induced by the strengthened summer monsoon,which stimulated carbon uptake,and the warming hiatus,which lessened the decrease in the NEP trend.Compared to the contribution of 56.3%by the climate effect,atmospheric CO2 concentration and nitrogen deposition had relatively small contributions(8.6 and 11.3%,respectively)to the shift.In conclusion,within the context of the global-warming hiatus,the strengthening of the summer monsoon is a critical climate factor that enhances carbon uptake in China due to the asymmetric response of photosynthesis and respiration.Our study not only revealed the shift in ecosystem carbon sequestration in China in recent decades,but also provides some insight for understanding ecosystem carbon dynamics in other monsoonal areas. | Honglin He Shaoqiang Wang Li Zhang Junbang Wang Xiaoli Ren Lei Zhou Shilong Piao Hao Yan Weimin Ju Fengxue Gu Shiyong Yu Yuanhe Yang Miaomiao Wang Zhongen Niu Rcmg Ge Huimin Yan Mei Huang Guoyi Zhou Yongfei Bai Zongqiang Xie Zhiyao Tang Bingfang Wu Leiming Zhang Nianpeng He Qiufeng Wang Guirui Yu | 2019 | National Science Review2019，6，3： | 24 |
| 2 | Selective hydrogenation of acetylene on SiO_2-supported Ni-Ga alloy and intermetallic compound显示文摘Ni/Si O_2 and bimetallic Ni_xGa/SiO_2 catalysts with different Ni/Ga atomic ratios(x = 10~2) were investigated for the selective hydrogenation of acetylene.It was found that Ni_xGa/SiO_2 showed higher selectivity to ethylene than Ni/Si O_2.This is attributed to the formation Ni-Ga alloy and Ni3 Ga intermetallic compound(IMC) where there was a charge transfer from Ga to Ni,which is favorable for reducing the adsorption strength and amount of ethylene on Ni atoms.As a result,the over-hydrogenation,the C–C bond hydrogenolysis and the polymerization were suppressed,and subsequently the selectivity to ethylene was enhanced.With the decrease of Ni/Ga atomic ratio,the activity and stability of the Ni_xGa/SiO_2 catalysts increased first and then decreased,while the ethylene selectivity tended to increase.Ni_5 Ga/SiO_2 exhibited the best performance.Under the conditions of 180 °C,0.1 MPa,and a reactant(1.0 vol% acetylene,5.0 vol% H_2 and 94 vol% N_2) with the space velocity of 36,000 m L h^(-1) g^(-1),the acetylene conversion maintained at 100% on Ni_5 Ga/SiO_2 during 120 h time on stream and the selectivity to ethylene was 75%~81%after reaction for 68 h.It was also found that the formation of Ni-Ga alloy and Ni_3 Ga IMC suppressed the incorporation of carbon to form NiCx,subsequently enhancing the catalyst stability.Additionally,with increasing the Ga content,the catalyst acid amount and strength tended to increase,which promoted the polymerization and carbon deposition and so the catalyst deactivation. | Lei Wang Fengxu Li Yanjun Chen Jixiang Chen | 2019 | Journal of Energy Chemistry2019，28，2： | 6 |
| 3 | Performance Assessment of Solar Assisted Absorption Heat Pump System with Parabolic Trough Collectors显示文摘 | Fu Wang Huanhuan Feng Jun Zhao Wen Li Fengxue Zhang Rui Liu | 2015 | Energy Procedia2015，，： | 1 |
| 4 | Energy partitioning and evapotranspiration in a black locust plantation on the Yellow River Delta,China显示文摘Plantations of woody tree species play a crucial role in ecological security along coastal zones.Understanding energy partitioning and evapotranspiration can reveal land–atmosphere interaction processes.We investigated energy fluxes,evapotranspiration,and their related biophysical factors using eddy covariance techniques in a black locust(Robinia pseudoacacia L.)plantation in 2016,2018,and 2019 on the Yellow River Delta.Downward longwave radiation offsets 84–85%of upward longwave radiation;upward shortwave radiation accounted for 12–13%of downward shortwave radiation.The ratio of net radiation to downward radiation was 18–19%over the three years.During the growing season,latent heat flux was the largest component of net radiation;during the dormant season,the sensible heat flux was the dominant component of net radiation.The seasonal variation in daily evapotranspiration was mainly controlled by net radiation,air temperature,vapor pressure deficit,and leaf area index.Black locust phenology influenced daily evapotranspiration variations,and evapotranspiration was greater under sea winds than under land winds because soil water content at 10-cm depth was greater under sea winds during the day.Seasonal patterns of daily evaporative fraction,Bowen ratio,crop coefficient,Priestley–Taylor coefficient,surface conductance,and decoupling coefficient were mainly controlled by leaf area index.The threshold value of daily surface conductance was approximately 8 mm sover the plantation. | Xiang Gao Zhenyu Du Qingshan Yang Jinsong Zhang Yongtao Li Xiaojie Wang Fengxue Gu Weiping Hao Zekun Yang Dexi Liu Jianmin Chu | 2022 | Journal of Forestry Research2022，33，4： | 1 |
| 5 | Friction and wear behaviour of stainless steel rubbing against copper-im- pregnated metallized carbon 显示文摘 | Chen Guangxiong Li Fengxue Dong Lin | 2009 | Tribology International2009，42，6： | 1 |
| 6 | Polyoxometalate-Based Ionic Frameworks for Highly Selective CO_(2) Capture and Separation显示文摘During the utilization of structural and functional advantages of polyoxometalates(POMs)for enhanced applications,a suitable assembly of these clusters in framework materials to act as binding nodes represents a promising approach.In contrast to well-developed coordination/covalent combinations,we have developed a convenient strategy to build porous structures of POMs with smaller-sized counterions as bridging ligands via ionic interactions to reinforce their capability in gas adsorption in parallel to metal-organic frameworks(MOFs)/covalent organic frameworks(COFs).With this goal,a series of POMs-based ionic frameworks(IFs)were constructed with triol-ligand modified Anderson-Evans-type clusters as building blocks,and their sodium counter-cations were used as linkers.The three-dimensional(3D)open-frameworks obtained displayed unusually selective CO_(2) capturing capability and efficient separation from their N_(2),H_(2),and CH_(4) mixtures under low pressure at room temperature.Among the synthesized IFs,the cobalt-centered cluster exhibited the best performance for the uptake and selective separation of CO_(2) over N_(2) and CH_(4) in a range of 0-1 bar,while the nickel-centered cluster displayed the highest selectivity over H_(2) at 1 bar.Breakthrough experiments based on real binary gas mixtures demonstrated that the cobalt-containing framework illustrated high performance in the actual gas separation and sustained stability against a simulated operating environment. | Fengxue Duan Xiaoting Liu Di Qu Bao Li Lixin Wu | 2021 | CCS Chemistry2021，3，11： | 1 |
| 7 | Mechanism of spatial emplacement of Shanhou gold ore body in Laixi of Shandong and its prospecting significance显示文摘Through analysis of geological characteristics of the gold deposit,the shape,occurrence,and spatial distribution of ore-controlling fault plane in the Shanhou mining area were investigated,and the regularities of enrichment and emplacement of ore body were summarized. The analysis shows that the Shanhou gold deposit was controlled by NE-NNE Zhaoping fault zone; the fault gouge developed in fault zone provides a barrier to ore-bearing hydrothermal solution,and the industrial ore body is all distributed within 40 m of footwall of main fault plane. The industrial ore body is mainly enriched in the NE positions of fault where the deep dips changed to flat dips,and shows the obvious regularity of NE lateral trending with angle around 75°. The stress analysis of fault in mineralization epoch showed that the ore-controlling structure presented the characteristics of righthanded rotation inverse-fault activity in mineralization epoch,and the host space tended to occur in NE regional tension positions where the dips become flat in the strike of fault,causing emplacement of ore body. It is thought by combining equal interval distribution of deposit with spatial variation of industrial ore body and orecontrolling fault structure that the Shanhou gold deposit recurred in regularity and the non-ore interval occurred in the ore body. Meanwhile,it is predicted that the favorable target area of prospecting lies in the areas of deep main fault plane with NE strike( > 30°) and the deep dips changing to flat dips in the Shanhou mining area,and the prospecting should be emphasized. The favorable deep mineralization prospect exists in middle Beibo mining area,where is the key area for future prospecting. | LIU Fengxu WANG Li WANG Dunrong XU Jingge CUI Zhiyong | 2016 | Global Geology2016，19，3： | 0 |
| 8 | CcpA mutants infuence selective carbon source utilization by changing interactions with target genes in Bacillus licheniformis显示文摘The gram-positive bacterium Bacillus licheniformis exhibits obvious selective utilization on carbon sources.This process is mainly governed by the global regulator catabolite control protein A(CcpA),which can recognize and bind to multiple target genes that are widely distributed in metabolic pathways.Although the DNA-binding domain of CcpA has been predicted,the infuence of key amino acids on target gene recognition and binding has yet to be uncovered.In this study,the impact of Lys31,Ile42 and Leu56 on in vitro protein–DNA interactions and in vivo carbon source selective utilization was investigated.The results showed that alanine substitution of Lys31 and Ile42,located within the 3rd helices of the DNAbinding domain,signifcantly weakened the binding strength between CcpA and target genes.These mutations also lead to alleviated repression of xylose utilization in the presence of glucose.On the other hand,the Leu56Arg mutant in the 4th helices exhibited enhanced binding afnity compared with that of the wild-type one.When this mutant was used to replace the native one in B.licheniformis cells,the selective utilization of glucose over xylose increased.This study provides a new strategy for understanding the relationship between the function and structure of regulatory proteins.This study also used a new strategy was used to regulate carbon source utilization beyond CCR engineering. | Yupeng Zhang Youran Li Fengxu Xiao Hanrong Wang Liang Zhang Zhongyang Ding Sha Xu Zhenghua Gu Guiyang Shi | 2022 | Systems Microbiology and Biomanufacturing2022，2，1： | 0 |
| 9 | Macrophage Dicer promotes tolerogenic apoptotic cell clearance and immune tolerance by inhibiting pentose phosphate pathway activity显示文摘Given that apoptosis is the dominant modality of homeostatic cell turnover,efficient clearance of apoptotic cells(ACs),which is a process known as efferocytosis,is critical for immune homeostasis.The phagocytic engulfment of ACs occurs through an immunologically silent process to prevent an immune response to self-antigens.Correspondingly,defects in the removal of ACs have been proposed to underlie the pathogenesis of systemic lupus erythematosus(SLE).1,2 However,pathways that regulate phagocytes for efficient immune-silent AC uptake remain to be fully elucidated.Dicer is best known for its role as a riboendonuclease in the biogenesis of microRNAs.3 While recent studies have determined a link between microRNAs and AC clearance,the interplay between Dicer and efferocytosis remains unknown. | Qiangdongzi Mao Bangwei Luo Jie Mei Wenhua Li Xue Zhang Zhiyu Wang Jiechun Zhang Tingting Liu Fengxue Zhang Zhiren Zhang | 2021 | Cellular & Molecular Immunology2021，18，7： | 0 |
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