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| 1 | Responses of plant community to the linkages in plant-soil C:N:P stoichiometry during secondary succession of abandoned farmlands,China显示文摘Succession is one of the central themes of ecology;however,the relationship between aboveground plant communities and underground soils during secondary succession remains unclear.In this study,we investigated the composition of plant community,plant-soil C:N:P stoichiometry and their relationships during secondary succession after the abandonment of farmlands for 0,10,20,30,40 and 50 a in China,2016.Results showed that the composition of plant communities was most diverse in the farmlands after secondary succession for 20 and 50 a.Soil organic carbon and total nitrogen contents slightly decreased after secondary succession for 30 a,but both were significantly higher than those of control farmland(31.21%-139.10%and 24.24%-121.21%,respectively).Moreover,C:N ratios of soil and microbe greatly contributed to the changes in plant community composition during secondary succession of abandoned farmlands,explaining 35.70%of the total variation.Particularly,soil C:N ratio was significantly and positively related with the Shannon-Wiener index.This study provides the evidence of synchronous evolution between plant community and soil during secondary succession and C:N ratio is an important linkage between them. | LIU Weichao FU Shuyue YAN Shengji REN Chengjie WU Shaojun DENG Jian LI Boyong HAN Xinhui YANG Gaihe | 2020 | Journal of Arid Land2020，12，2： | 5 |
| 2 | Vertical crosslinking MoS_2/three-dimensional graphene composite towards high performance supercapacitor显示文摘Molybdenum disulfide(MoS_2) has been stimulated in extensive researches due to its layered structure and the potential as an electrochemical energy material. However, the effects on electrochemical performance of concentration of MoS_2 are rarely mentioned. In this paper, the effects of different concentrated layered MoS_2 on the morphology and electrochemical properties of the composite of MoS_2 and three-dimensional graphene(MoS_2/3DG) were discussed. The results show that layered MoS_2 was successfully compounded to 3DG and formed a vertical crosslinking structure. It can be observed that MoS_2 nanosheets are vertically loaded on the inner and outer surface of graphee when the concentration of MoS_2 is 0.20 mg/L. The specific capacitance of composite(MoS_2(0.20 mg/L)/3 DG)reaches 2182.33 mF/cm^2 at the current density of 1 mA/cm^2, and the specific capacitance remains 116.83% after 5000 cycles. When the current density increased 100 times(from 1 mA/cm^2 to 100 mA/cm^2), the specific capacitance retains 78.9%. Meanwhile, the hybrid energy storage devises can deliver an energy density of 130.34 Wh/m^2. The superior electrochemical properties are attributed to the synergistic effect of MoS_2 and 3DG. Therefore, the material has a potential application on supercapacitor electrode material. | Chengjie Han Zhen Tian Huanglin Dou Xiaomin Wang Xiaowei Yang | 2018 | Chinese Chemical Letters2018，29，4： | 2 |
| 3 | Effect of Soil C,N and P Stoichiometry on Soil Organic C Fractions After Afforestation显示文摘Afforestation is recognized as an important driving force for soil organic C(SOC) dynamics and soil element cycling.To evaluate the relationships between soil C:N:P stoichiometry and SOC fractions,soil C:N:P stoichiometry distributions at 0–200 cm soil depths were analyzed and the contents of SOC fractions were evaluated in 9 typical land-use systems on the Loess Plateau of China.The contents of light fraction organic C,particulate organic C(>53,53–2 000,and>2 000 μm),labile organic C,microbial biomass C,and dissolved organic C decreased with increasing soil depth and were higher in afforested soil than in slope cropland soil.Compared with the slope cropland,different vegetation types influenced soil C:N,C:P,and N:P ratios,especially when C:P and N:P ratios were significantly higher(P<0.05).Moreover,SOC fractions at the 0–10 and 10–40 cm depths were particularly affected by soil C:P ratio,whereas those at the 40–100 and 100–200 cm soil depths were significantly affected(P<0.05) by soil N:P ratio.These results indicate that changes in SOC fractions are largely driven by soil C:P and N:P ratios at different soil depths after afforestation. | ZHAO Fazhu ZHANG Lu SUN Jiao REN Chengjie HAN Xinhui YANG Gaihe PANG Guowei BAI Hongying WANG Jun | 2017 | Pedosphere2017，27，4： | 1 |
| 4 | Covalently cross-linked proton exchange membranes based on sulfonated poly(arylene ether ketone) and polybenzimidazole oligomer显示文摘 | Chengji Zhao Haidan Lin Miaomiao Han Hui Na | 2010 | Journal of Membrane Science2010，353，： | 1 |
| 5 | Preparation and properties of epoxy-based cross-linked sulfonated poly(arylene ether ketone) proton exchange membrane for direct methanol fuel cell applications显示文摘 | Yang Zhang Xu Fei Gang Zhang Hongtao Li Ke Shao Jing Zhu Chengji Zhao Zhongguo Liu Miaomiao Han Hui Na | 2010 | International Journal of Hydrogen Energy2010，，12： | 1 |
| 6 | Selegiline improves excessive daytime sleepiness in Parkinson’s disease:an open-label observational study显示文摘To the Editor:Parkinson’s disease(PD)is the second most common neurodegenerative disorder,and sleep disturbance is a major disabling non-motor symptom.[1]Excessive daytime sleepiness(EDS)is defined as inappropriate and undesirable sleepiness during waking hours,which may occur during activities such as talking or driving.In PD patients,EDS increased the risk of accidents and resulted in a poor quality of life.[2] | Jinru Zhang Juping Chen Jia Li Jian Li Hong Miao Xiangyang Zhu Meng Meng Yang Han Jing Chen Xiaoyu Cheng Kangping Xiong Hong Jin Weifeng Luo Chengjie Mao Chunfeng Liu | 2022 | Chinese Medical Journal2022，，14： | 0 |
| 7 | Conformation Governed Reactivity of Fused Thia-Sapphyrin Dimers Bearing Multiply Fused Heteroaromatic Rings显示文摘Suitable conformations and proper alignment of complex natural macrocycles are essential for achieving their unique properties.However,such artificial macrocycle prototypes are still limited due to synthetic difficulties.In this respect,directly linked porphyrin analog dimers display tunable conformations and intriguing properties,and thus,they may be employed as a class of promising platforms.Herein,we report that one-pot oxidative dimerization of thiahydrosapphyrin 1 yields dimers,2anti and 2syn,comprising a transoid-oriented plate-like bipyrrolo[1,2-a]indolylidene.The thiophene-containing tetrapyrrole arching subunits in 2 lie at the opposite(anti)and same(syn)sides of the plate,respectively.Meanwhile,multiply fused cisoid-orientated dimer 3 was also obtained;a polycyclic pyrrolo-bridged bipyrroloindole derivative tethered with fullyπ-conjugated bridges was formed.Notably,the anti-dimer 2anti underwent subsequent oxidative fusion to furnish a further-fused[6.5.5.7.5.5.5.6]-octacyclic compound 4anti.In contrast,the syn-orientated 2syn could not be further fused due to the long distance between the potential reaction sites.This study provides a unique approach to the fused dimeric porphyrin analogs for potential near-infrared optical materials by a simple oxidation reaction.It also reveals the importance of conformation-modulated reactivity for constructing complex porphyrin arrays. | Qizhao Li Masatoshi Ishida Chengjie Li Glib Baryshnikov Feng Sha Bin Zhu Xinyan Wu HansÅgren Hiroyuki Furuta Yongshu Xie | 2023 | CCS Chemistry2023，5，6： | 0 |
| 8 | Mobile-ionic FETs with ultra-scaled amorphous dielectric achieving ferroelectric behaviors and sub-kT/q swing with temperature down to 77 K显示文摘The steep subthreshold swing(SS)could be achieved in negative capacitance field-effect transistors(NCFET)to reduce power dissipation in modern electronics.Polycrystalline Hf O2-based ferroelectric materials have attracted great interest due to their better thickness scalability and CMOS process compatibility[1]. | Huan LIU Qiyu YANG Chengji JIN Jiajia CHEN Lulu CHOU Xiao YU Yan LIU Genquan HAN | 2024 | Science China(Information Sciences)2024，67，1： | 0 |
| 9 | N-cycle gene abundance determination of N mineralization rate following re-afforestation in the Loess Plateau of China显示文摘Afforestation effectively improved soil microbial communities and significantly increased soil nitro-gen mineralization rate(Rm).Soil microorganisms drive Rm by regulating soil N-cycling genes.Soil nitrification genes had a major effect on soil Rm than denitrification genes after afforestation.Assessing the function of forest ecosystems requires an understanding of the mechanism of soil nitrogen mineralization.However,it remains unclear how soil N-cycling genes drive soil nitrogen mineralization during afforestation.In this study,we collected soil samples from a chrono-sequence of 14,20,30,and 45 years of Robinia pseudoacacia L.(RP14,RP20,RP30,and RP45)with a sloped farmland(FL)as a control.Through metagenomic sequencing analysis,we found significant changes in the diversity and composition of soil microbial communities involved in N-cycling along the afforestation time series,with afforestation effectively increasing the diversity(both alpha and beta diversity)of soil microbial communities.We conducted indoor culture experiments and analyzed correlations,which revealed a significant increase in both soil nitrification rate(Rn)and soil nitrogen mineralization rate(Rm)with increasing stand age.Furthermore,we found a strong correlation between soil Rm and soil microbial diversity(both alpha and beta diversity)and with the abundance of soil N-cycling genes.Partial least squares path modeling(PLS-PM)analysis showed that nitrification genes(narH,narY,nxrB,narG,narZ,nxrA,hao,pmoC-amoC)and denitrification genes(norB,nosZ,nirK)had a greater direct effect on soil Rm compared to their effect on soil microbial communities.Our results reveal the relationships between soil nitrogen mineralization rate and soil microbial communities and between the mineralization rate and functional genes involved in N-cycling,in the context of Robinia pseudoacacia L.restoration on the Loess Plateau.This study enriches the understanding of the effects of microorganisms on soil nitrogen mineralization rate during afforestation and provides a new theoretical basis for evaluating soil nitrogen mineralization mechanisms during forest succession. | Yaping Zhao Yuqing Zhao Shuohong Zhang Yulin Xu Xinhui Han Gaihe Yang Chengjie Ren | 2024 | Soil Ecology Letters2024，6，1： | 0 |
| 10 | Ferroelectric-like behaviors of metal-insulator-metal with amorphous dielectrics显示文摘In this paper,unique ferroelectric-like characteristics in amorphous(a-)ZrO_(2)-based devices enabled by mobile ions are systematically investigated at room temperature and cryogenic.The physical origin of the ferroelectric-like behaviors of the metal/a-ZrO_(2)/metal capacitor is confirmed to be the migration of ions exhibiting strong frequency dependency due to the limited velocity of the mobile ions,which is proven by the comparison between experimental results and theoretical analysis.The ferroelectric-type hysteresis will be reduced sharply with the decrease of the temperature,which is essentially different from the reported doped-HfO_(2)FeFET.This further confirms that the origin of the ferroelectric-like characteristics is the migration and redistribution of the mobile ions. | Huan LIU Jiajia CHEN Chengji JIN Xiao YU Yan LIU Genquan HAN | 2023 | Science China(Information Sciences)2023，66，10： | 0 |
| 11 | Sound management may sequester methane in grazed rangeland ecosystems显示文摘 | Chengjie Wang Guodong Han Shiping Wang Xiajie Zhai Joel Brown Kris M. Havstad Xiuzhi Ma Andreas Wilkes Mengli Zhao Shiming Tang Pei Zhou Yuanyuan Jiang Tingting Lu Zhongwu Wang Zhiguo Li | 2014 | 内蒙古农业大学学报(自然科学版)2014，35，4： | 0 |
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