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3篇 您的检索式:作者名="Zhewei CUI"
    题名 作者 年代 出处 被引量
1Effects of precipitation and landuse on runoff during the past 50 years in a typical watershed in the Loess Plateau, China显示文摘In the past century, great progress has been made worldwide in our understanding of forest-water relationship. The successful forestation programs implemented in China-which have improved the ecological environmental conditions-have gained the attention of many researchers and highlighted the relationship between forestation and water yields. The arid and semi-arid Loess Plateau has received attention from water engineers and eco-hydrological researchers in China because of a shortage in water resources. We selected one of the oldest stations conducting soil and water conservation experiments, the Xifeng soil and water conservation station, and chose the Nanxiaohe catchment and its paired catchments (Yangjiagou catchment and Dongzhuanggou catchment) as our research areas. Trends in precipitation, air temperature, streamflow over the past 50 years, and the effect of changing land use on streamflow were analyzed. The Mann-Kendall test showed that precipitation had a negative trend (downward trend), whereas air temperature showed a positive trend (upward trend) from the past to present in the Nanxiaohe catchment. However, the trends seen in precipitation, air temperature did not contain any 'jumping points.' The paired catchment approach is used to detect the effects of land cover change on hydrology in the Yangjiagou and the contrast catchment, i.e., Dongzhuanggou catchment in our study. The results showed a large change in land use in the Yangjiagou catchment from 1954 to 2008. An increase in forested land (from 0% to 40.08% from 1954 to 2008) and a reduction of bare land (from 51.26% to 5.50% from 1954 to 2008) accounted for a large part of the change in land use. However, the land use changed little in the contrast catchment. The comparison of streamflow in the paired catchments showed that forestation reduced streamflow by 49.63% (or 6.5 mm) each year.Huaxing BI Bin LIU Jie WU Lei YUN Zhihan CHEN Zhewei CUI 2009International Journal of Sediment Research2009,24,3:21
2Cooperation of nitrogen-doping and catalysis to improve the Li-ion storage performance of lignin-based hard carbon显示文摘Hard carbon draws great interests as anode material in lithium ion batteries(LIBs)due to its high theoretical capacity,high rate capability and abundance of its precursors.Herein we firstly synthesize the lignin-melamine resins by grafting melamine onto lignin.Afterwards,nitrogen doped hard carbon is prepared by the pyrolysis of lignin-melamine resins with the aid of catalyst(Ni(NO_3)_2·6H_2O)at 1000°C.Compared with the samples without nitrogen-doping and catalysis,as-prepared nitrogen doped hard carbon exhibits higher reversible capacity(345 mAh g^(–1)at 0.1 A g^(-1)),higher rate capability(145 mAh g^(-1)at 5 A g^(–1))and excellent cycling stability.The superior electrochemical performance is ascribed to the synergistic effect of nitrogen doping,graphitic structure and amorphous structure.Among them,nitrogen doping could create the vacancies around the nitrogen sites,which enhance the reactivity and the electronic conductivity of materials.Additionally,graphitic structure also enhances the electronic conductivity of materials,thus improving the electrochemical performance of hard carbon.It is worthwhile that lignin,renewable and abundant biopolymer,is converted to hard carbon with good electrochemical performance,which realizes the high value utilization of lignin.Zhewei Yang Huajun Guo Feifei Li Xinhai Li Zhixing Wang Lizhi Cui Jiexi Wang 2018Journal of Energy Chemistry2018,27,5:5
3靶向eIF4AI的N-末端抑制其催化循环显示文摘文章简介蛋白翻译是中心法则的最后一环,是控制细胞内蛋白质稳态的关键生命过程。蛋白翻译起始是整个翻译过程中最关键的限速步骤,翻译过程的失调与神经发育类疾病以及恶性肿瘤等多种疾病密切相关。真核蛋白翻译起始因子eIF4A是最早被发现的DEAD盒(DEAD-box)RNA解旋酶超家族成员。蒋晨晓 汤叶根 丁露露 Renke Tan Xiaojing Li Junyan Lu Jing Jiang Zhaomeng Cui Zhewei Tang Wei Li Zhangjun Cao Tilman Schneider-Poetsch Wei Jiang Cheng Luo 丁滪 刘建伟 党永军 2020科学新闻2020,,2:0
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