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16篇 您的检索式:作者名="Dejun Fei"
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1Status and distribution changes of the endangered Green Peafowl (Pavo muticus) in China over the past three decades (1990s-2017)显示文摘Background: Understanding the changes in population dynamics, including demographics, distribution and threats, is essential for species status assessing. The endangered Green Peafowl(Pavo muticus) has experienced sharp population declines and distribution range diminishing both in China and Southeast Asia. Field population surveys have not been conducted in China since the 1990 s, which hindered conservation planning and decision-making.Methods: With interview and line transects methods, we figured out the population and distribution changes of Green Peafowl across its historical ranges over the past three decades in China during 2014-2017.Results: The Green Peafowl once habituated in 54 counties in China. Nearly 60% of the distribution counties were lost in the past three decades, with the left 22 counties distributed in central, southern and western Yunnan, SW China. Population decrease detected in all distribution areas except for Shuangbai and Xinping county where more than 60% of the total population is located. Only about 30% of the former bird population were recorded with the same interviewing method as 20 years ago. Three birds, 1 carcass, 6 calls and 12 footprints were detected along the 865 km line transects, indic-ating extremely low encounter rate of Green Peafowl in field. Sharp decreases in flock sizes were also detected, from 820 birds per flock in the 1990 s to 3-5 birds at present. Poaching and habitat conversion are two widespread and long-lasting threats, while poisoning caused mortality in the past and hydropower construction affect regional population's survival. Large flocks of 18–27 birds were discovered in the field, which increases our confidence of population recovery of this endangered pheasant in China.Conclusions: Only interviewed bird number and counts based on line transects were presented in this study, without further population estimation due to limitation of the data sets. Although the actual population of this cryptic bird must be underestimated, dramatic population declines and distribution concentrations of the endangered Green Peafowl occurred over the past 30 years in China undoubtedly.Dejun Kong Fei Wu Pengfei Shan Jianyun Gao Dao Yan Weixiong Luo Xiaojun Yang 2018Avian Research2018,9,2:12
2Studies on the extraction of chromium (111) by emulsion liquid membrane 显示文摘LIFENG ZHAO DEJUN FEI YAGU DANG 2010Journal of Hazardous Materials2010,78,:1
3Studies on the ex- traction of chromium (III) by emulsion liquid membrane 显示文摘Lifeng Zhao Dejun Fei Yagu Dang 2010Jour- nal of Hazardous Materials2010,78,:1
4Studies on the extraction of chromium(III) by emulsion liquid membrane显示文摘Lifeng Zhao Dejun Fei 0,,178:1
5Pickering emulsions stabilized solely by layered double hydroxides particles: The effect of salt on emulsion formation and stability显示文摘Fei Yang Shangying Liu Jian Xu Qiang Lan Fang Wei Dejun Sun 2006Journal of Colloid And Interface Science2006,,1:1
6Synthesis of bilayer oleic acid-coated Fe 3 O 4 nanoparticles and their application in pH-responsive Pickering emulsions显示文摘Qiang Lan Chao Liu Fei Yang Shangying Liu Jian Xu Dejun Sun 2007Journal of Colloid And Interface Science2007,,1:1
7Synergistic effect of silica nanoparticle and cetyltrimethyl ammonium bromide on the stabilization of O/W emulsions显示文摘Qiang Lan Fei Yang Shuiyan Zhang Shangying Liu Jian Xu Dejun Sun 2007Colloids and Surfaces A: Physicochemical and Engineering Aspects2007,,1:1
8Pickering emulsions stabilized solely by layered double hydroxides particles: The effect of salt on emulsion formation and stability显示文摘Fei Yang Shangying Liu Jian Xu Qiang Lan Fang Wei Dejun Sun 2006Journal of Colloid And Interface Science2006,,1:1
9Effect of dispersion pH on the formation and stability of Pickering emulsions stabilized by layered double hydroxides particles显示文摘Fei Yang Quan Niu Qiang Lan Dejun Sun 2006Journal of Colloid And Interface Science2006,,2:1
10Pickering emulsions stabilized solely by layered double hydroxides particles: The effect of salt on emulsion formation and stability显示文摘Fei Yang Shangying Liu Jian Xu Qiang Lan Fang Wei Dejun Sun 2006Journal of Colloid And Interface Science2006,,1:1
11Distributed storage and data mining analysis of urban road traffic based on ha- doop显示文摘Liao Fei Huang Sheng Gong Dejun 2013Highways & Automotive Applications2013,27,5:1
12Studies on the extraction of chromium (III) by emulsion liquid mem- brane显示文摘Lifeng Zhao Dejun Fei Yagu Dang 2010Journal of Hazardous Materials2010,178,13:1
13Characteristics of source rocks and hydrocarbon resource prospects of Permian Linxi Formation in northern Songliao Basin显示文摘In order to explore the oil and gas resource prospects in the Carboniferous–Permian strata in northern Songliao Basin,geological survey boreholes(HFD 1 and HFD 2)were drilled in the area,and thick dark mudstone and slate of the Upper Permian Linxi Formation were encountered.Source rock geochemistry analysis of the samples show that the organic matter abundance of the Upper Permian Linxi Formation source rock in the north of Songliao Basin is high,which belongs to medium to good source rock.The organic matter belongs to type Ⅱ,and it is in the evolution stage of highly mature to over mature.The Pr/Ph ratios of the source rocks range from 0.16 to 0.93,with an average of 0.53.The phytane predominance is obvious,and indicates a strong reduction to reduction sedimentary environment,which is conducive to the preservation of organic matter.Pr/nC_(17),Ph/nC_(18) and C_(27)–C_(28)–C_(29) regular steranes indicate that the organic matter was derived from a mixture of vascular plants and aquatic organisms such as algae,and is mainly contributed by phytoplankton.Through comprehensive analysis,it is considered that the source rocks of the Upper Permian Linxi Formation in northern Songliao Basin have entered the gas generation stage and have shale gas exploration prospects.ZHANG Haihua GENG Shufeng ZHANG Jian SUN Lei CHEN Shuwang SU Fei ZHENG Yuejuan ZHANG Dejun BIAN Xiongfei 2022Global Geology2022,25,3:1
14Visual-Based Character Embedding via Principal Component Analysis显示文摘Linchao He Dejun Zhang Long Tian Fei Han Mengting Luo Yilin Chen Yiqi Wu 2018国际计算机前沿大会会议论文集2018,,1:0
15Context-Aware Network Embedding via Variation Autoencoders for Link Prediction显示文摘Long Tian Dejun Zhang Fei Han Mingbo Hong Xiang Huang Yilin Chen Yiqi Wu 2018国际计算机前沿大会会议论文集2018,,1:0
16General Reductive Amination of Aldehydes and Ketones with Amines and Nitroaromatics under H2 by Recyclable Iridium Catalysts显示文摘异构的铱催化剂与 nitroaromatics 和胺使用 H 2 被准备并且申请醛和酉同类的减少的胺化作用。铱催化剂被离子的液体 1-methyl-3-cyanomethylimidazoulium 氯化物的热分解准备([MCNI ] Cl ) 与铱氯化物(在激活的碳的 IrCl 3) 。铱粒子在做 N 的碳材料从是驱散的井和马厩[MCNI ] 有激活的碳的 Cl。Ir@NC (600-2h ) 催化剂被发现用 H 2 和许多硝基苯为醛和酉同类的减少的胺化作用高度活跃、选择,胺有选择地被变换成相应的第二等、第三级的胺。没有明显的释放, Ir@NC (600-2h ) 催化剂能若干次是可重用的。Dejun Sui Fei Mao Haipeng Fan Zhengliang Qi Jun Huang 2017Chinese Journal of Chemistry2017,35,9:0
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