|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | Impact of land use conversion on soil organic carbon stocks in an agro-pastoral ecotone of Inner Mongolia显示文摘Soil organic carbon(SOC) stocks in terrestrial ecosystems vary considerably with land use types. Grassland, forest, and cropland coexist in the agro-pastoral ecotone of Inner Mongolia, China. Using SOC data compiled from literature and field investigations, this study compared SOC stocks and their vertical distributions among three types of ecosystems. The results indicate that grassland had the largest SOC stock, which was 1.5-and 1.8-folds more than stocks in forest and cropland, respectively. Relative to the stock in 0–100 cm depth, grassland held more than 40% of its SOC stock in the upper 20 cm soil layer; forest and cropland both held over 30% of their respective SOC stocks in the upper 20 cm soil layer. SOC stocks in grazed grasslands were remarkably promoted after ≥20 years of grazing exclusion. Conservational cultivation substantially increased the SOC stocks in cropland, especially in the 0–40 cm depth. Stand ages, tree species, and forest types did not have obvious impacts on forest SOC stocks in the study area likely due to the younger stand ages. Our study implies that soil carbon loss should be taken into account during the implementation of ecological projects, such as reclamation and afforestation, in the arid and semi-arid regions of China. | ZHAO Wei HU Zhongmin LI Shenggong GUO Qun YANG Hao ZHANG Tonghui | 2017 | Journal of Geographical Sciences2017，27，8： | 8 |
| 2 | Highly active N-doped carbon encapsulated Pd-Fe intermetallic nanoparticles for the oxygen reduction reaction显示文摘Developing highly efficient non-R catalysts for fuel cells and metal-air batteries is highly desirable but still challenging due to the sluggish oxygen reduction reaction(ORR).Herein,a facile and efficient strategy is demonstrated to prepare N-doped carbon encapsulated ordered Pd-Fe intermetallic(O-Pd-Fe@NC/C)nanoparticles via a one-step thermal annealing method.The obtained O-Pd-Fe@NC/C nanoparticles show enhanced ORR activity,durability and anti-poisoning capacity in both acid and alkaline medium.When O-Pd-Fe@NC/C serving as cathode catalyst for Zn-air battery,it exhibits higher voltage platform and superior cycling performance with respect to the Zn-air battery based on the mixture of Pt/C and Ir/C catalysts.The enhanced electrocatalytic performance can be ascribed to the formation of face-centered tetragonal(fct)Pd-Fe nanoparticles,the protective action of the N-doped carbon layer and the interface confinement effect between them.The in situ formed N-doped carbon shell not only restrains the Pd-Fe ordered intermetallics from aggregating effectively during the thermal annealing process,but also provides a strong anchoring effect to avoid the detachment of Pd-Fe nanoparticles from the carbon support during the potential cycling.This facile carbon encapsulation strategy may also be extended to the preparation of a wide variety of N-doped carbon encapsulated intermetallic compounds for fuel cell application. | Yezhou Hu Yun Lu Xueru Zhao Tao Shen Tonghui Zhao Mingxing Gong Ke Chen Chenglong Lai Jian Zhang Huolin L.Xin Deli Wang | 2020 | Nano Research2020，13，9： | 3 |
| 3 | The LTR of endogenous retrovirus ev21 retains promoter activity and exhibits tissue specific transcription in chicken显示文摘Endogenous viruses integrate into the host genome and influence the expression of neighboring genes through their long terminal repeats (LTRs). In this study, we analyzed the promoter, enhancer and transcriptional activities of the chicken endogenous retrovirus ev21 LTR. The LTR was cloned into pGL3-basic and pGL3-promoter luciferase vectors in forward and reverse orientation separately. The luciferase activities were detected respectively in chicken embryonic fibroblast cell, human embryonic kidney cell line, human lung carcinoma cell line, Chinese hamster ovary cell line, and murine melanoma cell line. Relative luciferase activity analysis indicated that the ev21 LTR retained bi-directional promoter activity but no detectable enhancer activity in these cells. The constructs containing the LTR and F1 region show stronger promoter activity than the constructs containing only LTR. The transcriptional pattern of ev21 LTR varied in tissues of late feathering White Leghorn chicken at post-hatch day one. Skin exhibits the highest expression in the tissues examed. Collectively, our results indicate that the ev21 LTR exhibits tissue-type specific expression in White Leghorn chicken, and it also have regulatory potential. | LU XiaoQing HAN JinRun LIU XiaoFang LIN TongHui LI YuLin HU XiaoXiang LI Ning | 2009 | Chinese Science Bulletin2009，54，24： | 3 |
| 4 | Astragaloside IV attenuates Toll-like receptor 4 expression via NF-κB pathway under high glucose condition in mesenchymal stem cells显示文摘 | Mincai Li Liangzu Yu Tonghui She Yapin Gan Fuxin Liu Zhengwu Hu Yongbin Chen Suqin Li Hongli Xia | 2012 | European Journal of Pharmacology (-)2012，，1： | 1 |
| 5 | Structural basis of the crosstalk between histone H2B monoubiquitination and H3 lysine 79 methylation on nucleosome显示文摘Dear Editor,Histone marks deposited by post-translational modifications(PTMs)frequently occur in interrelated combinational patterns to create a complex and precise control on the chromatin structure and function.1 One of the landmark findings of histone PTM crosstalk is the trans-histone regulation of histone H3 lysine 79(H3K79)methylation by the monoubiquitination of histone H2B on lysine 120(H2BK120).2 Mono-,di-,and tri-methylation of histone H3K79 serves as a prominent histone mark that participates in transcription regulation and DNA damage response.3 H2BK120 monoubiquitination(H2BK120ub1)is a prerequisite for the efficient methylation of H3K79 by the unique non-SET domain-containing histone methyltransferase DOT1L(Disrupter of telomere silencing protein 1-like)in vivo.2 Incorporation of chemically monoubiquitinated H2B into in vitro reconstituted nucleosome directly stimulates the catalytic activity of DOT1L4(Supplementary information,Figs.S1 and S2).It still remains poorly understood how the H3K79 methyl marks are deposited and how the associated PTM crosstalk occurs on nucleosome. | Tonghui Yao Wei Jing Zhiguo Hu Ming Tan Mi Cao Qianmin Wang Yan Li Guiyong Yuan Ming Lei Jing Huang | 2019 | Cell Research2019，29，4： | 1 |
| 6 | Astragaloside IV attenuates Toll-like receptor 4 expression via NF-κB pathway under high glucose condition in mesenchymal stem cells显示文摘 | Mincai Li Liangzu Yu Tonghui She Yapin Gan Fuxin Liu Zhengwu Hu Yongbin Chen Suqin Li Hongli Xia | 2012 | 2012 (1-3)2012，，1： | 1 |
| 7 | Realizing the Long Lifespan of Molybdenum Trioxide in Aqueous Aluminum Ion Batteries Through Potential Regulation显示文摘MoO_(3) is one of the most promising anode materials for aqueous aluminum batteries due to its high theoretical capacity and suitable aluminum insertion/de-insertion potential.However,the inferior cycling stability limits its further application,and the failure mechanism is still unclear.In this article,we provide a straightforward potential regulation technique to manage phase evolution during the charge/discharge process,which ultimately results in a markedly enhanced MoO_(3) electrode cycling stability.The failure mechanism study reveals that the excessive oxidation of the electrode during charge/discharge generates the H_(0.34)MoO_(3) phase,which has high solubility and is the primary cause of MoO_(3) deactivation.Although the dissolved Mo species will be deposited onto the electrode sheet again,the deposition is not electrochemically active and cannot contribute to the capacitance.Controlling the cutoff potential prevented the production of H_(0.34)MoO_(3),resulting in excellent cycling performance(80.1% capacity retention after 4000 cycles).The as-assembled α-MoO_(3)//MnO_(2) full battery exhibits high discharge plateaus(1.4 and 0.9 V),large specific capacity(200 mAhg^(-1) at 2 Ag^(-1)),and ultra-high coulombic efficiency(99%).The research presented here may contribute to the development of highly stable electrode materials for aqueous batteries. | Haodong Fan Xuejin Li Jie Zhou Xiaoning Wang Xiuli Gao Haoyu Hu Li Zhou Tonghui Cai Yongpeng Cui Pengyun Liu Qingzhong Xue Zifeng Yan Wei Xing | 2023 | Renewables2023，1，4： | 0 |
| 8 | Self-assembled interlayer aiming at the stability of NiOx based perovskite solar cells显示文摘Inorganic NiO_(x) based inverted structure perovskite solar cells (PSCs) is reported to be more stable than that with the organic hole transport materials.In this work,NiO_(x)/MAPbI_(3) interface chemical reaction induced instability of perovskite is unveiled:Ni^(3+) and I^(-) exhibit redox reactions and deprotonation of MA^(+) happens,which result in interface defects and perovskite lattice deformation.Thus the defective interface accelerates the degradation of perovskite by defect pathways from the bottom interface to the perovskite surface contacting H_(2)O/O_(2).Self-assembled interlayer of NH_(2)^(-)end silane on NiO_(x)separates the reactive NiO_(x)and MAPbI_(3),tunes the interface energy states by–NH_(2) end group.As a result,the PSC based on the silane treated NiO_(x)achieves enhanced PCE of 20.1%with decent stability under environmental and extreme conditions (high temperature,high humidity,light infiltration).Our work highlights the interface chemical problem induced PSC instability and a simple interface modification to achieve the stable PSCs. | Tonghui Guo Zhi Fang Zequn Zhang Zhiqiang Deng Rui Zhao Jing Zhang Minghui Shang Xiaohui Liu Ziyang Hu Yuejin Zhu Liyuan Han | 2022 | Journal of Energy Chemistry2022，31，6： | 0 |
| 9 | Molybdenum-doped titanium dioxide supported low-Pt electrocatalyst for highly efficient and stable hydrogen evolution reaction显示文摘The Platinum(Pt)-based catalysts exhibit excellent catalytic performance for the hydrogen evolution reaction(HER) while suffering from poor stability due to the weak interaction between the carbon support and Pt.Herein,a molybdenum-doped titanium dioxide(Ti_(0.9)Mo_(0.1)O_(2)) supported low-Pt electrocatalyst with stronger interaction between catalyst and support is applied to tune the electrocatalytic performance of Pt.The Ti_(0.9)Mo_(0.1)O_(2) support can not only tolerate the corrosion environment in the catalytic system,but also generate strong metal-support inte raction(SMSI) between the oxide and catalyst.A facile solvothermal method is used to prepareTi_(0.9)Mo_(0.1)O_(2) as support to anchor Pt nanoparticles.The 5% Pt supported on Ti_(0.9)Mo_(0.1)O_(2) catalyst exhibits 4.4-fold mass activity(MA) at an overpotential of 50 mV and higher stability than 20% Pt/C with only 1/4 Pt loading.The SMSI between the Ti_(0.9)Mo_(0.1)O_(2) and Pt prevents the Pt aggregation to achieve excellent stability,and hydrogen spillover effect in the interface between Pt and support benefits the hydrogen production process.This work presents a novel sight for the fabrication and design of oxide supported catalysts in various catalytic system by reasonably employing support effect. | Ke Chen Shaofeng Deng Yun Lu Mingxing Gong Yezhou Hu Tonghui Zhao Tao Shen Deli Wang | 2021 | Chinese Chemical Letters2021，32，2： | 0 |
| 10 | Privacy Preserving Algorithm for Spectrum Sensing in Cognitive Vehicle Networks显示文摘The scarcity of spectrum resources fails to meet the increasing throughput demands of vehicular networks.There is an urgent need to maximize the utilization of spectrum bands in mobile networks.To ascertain the availability of spectrum bands,users should engage in wireless channel sensing and collaboration.However,spectrum sensing data always involves users’privacy,such as their location.This paper first introduces sensing trajectory inference attack in cognitive vehicular networks and then proposes a data confusion-based privacy-preserving algorithm and a cryptonym array-based privacy-preserving aggregation scheme for spectrum sensing in cognitive vehicular networks.Unlike existing methods,the proposed schemes transmit confused data during the aggregation process.This deliberate obfuscation makes it almost impossible to infer users’location from the transmitted data.The analysis demonstrates the resilience of the proposed schemes against sensing trajectory inference attack. | Hongning LI Tonghui HU Jiexiong CHEN Xiuqiang WU Qingqi PEI | 2024 | Chinese Journal of Electronics2024，33，1： | 0 |
您所在的机构暂未开通此部分的功能，请联系管理员