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Climate change induced range shifts of Galliformes in China

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Integrative Zoology 2010年第2期5卷 154-163页

作者： Renqiang li Huidong TIAN xinhai li Key Laboratory of Ecosystem Network Observation and Modeling Institute of Geographic Sciences and Natural Resources ResearchChinese Academy of SciencesBeijingChina State Key Laboratory of Integrated Pest Management on Pest Insects and Rodents Institute of ZoologyChinese Academy of SciencesBeijingChina Key Laboratory of the Zoological Systematics and Evolution Institute of ZoologyChinese Academy of SciencesBeijingChina Graduate University of Chinese Academy of Sciences BeijingChina

Climate change will cause range shifts of many species in the *** might be particularly vulnerable to climate change,as they have low dispersal *** is known about their possible responses to the future *** used a generalized additive model to predict the current and future ranges of all 63 Galliformes in China,based on a comprehensive species occurrence database and a combination of climate *** environmental variables(*** and human footprint index)were also considered,as well as the latitude and longitude of the *** component analysis was conducted to illustrate the association between environmental variables and Galliformes *** the Special Report on Emissions Scenarios(SRES)A2 climate change scenario for 2071–2100,we projected that 29 species would have range shifts over 50%,including 13 endemic *** at higher elevation face greater range *** shifts are greater than those in other *** suggest conservationists pay special attention to the 29 Galliformes that face extensive range shifts,especially the endemic species among them.

关键词： climate change Galliformes generalized additive model principal component analysis range shift

Bird functional traits affect seed dispersal patterns of China's endangered trees across different disturbed habitats

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Avian Research 2018年第2期9卷 144-149页

作者： Ning li Zheng Wang xinhai li Zhaohui li Institute of Applied Ecology Nanjing Xiaozhuang University Co-Innovation Center for Sustainable Forestry in Southern China College of Biology and Environmental Science Nanjing Forestry University Institute of Zoology Chinese Academy of Sciences

Background: The most dominant global threat to natural forests and their biodiversity is land-cover change, which has negative impacts on both species persistence and ecosystem functions. Land-cover change could alter animal behaviour and disrupt seed dispersal mutualisms. However, its effects on the role of bird functional traits in seed dispersal are not well ***: In the present study, we assessed the contributions of bird functional traits(behavioural traits: food habit, foraging pattern, foraging frequency, and habitat specialisation; morphological traits: weight, body length, wing length, and tail length) to both seed removal patterns and seed dispersal distances of an endangered and native tree species, Chinese yew(Taxus chinensis), in farmland, patchy habitat, and natural habitat, of southeast ***: We found that the ability of T. chinensis trees to form seed dispersal mutualisms with local birds varied across the different disturbed habitats. As a consequence of these mutualisms, more seeds were removed by birds from the patchy habitat than from the other two habitats. The number of seeds removed increased with bird foraging frequency. Moreover, the dispersal distance from the three habitats differed, and the longest dispersal distances were observed at both the patchy habitat and the farmland site. Seed dispersal distance increased with bird tail and wing ***: Our results highlight the importance of bird functional traits in the seed dispersal patterns of endangered trees across disturbed forest habitats, which should be considered for tree conservation and management.

关键词： Functional traits Seed dispersal Frugivorous birds Behavioural traits Morphological traits

MASS TRANSFER AT GAS EVOLVING MERCURY ELECTRODE

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Transactions of Nonferrous Metals Society of China 1992年第2期2卷 42-46页

作者： li xinhai Chen Xinmin Central-South University of Technology Changsha 410083China

Mass transfer at hydrogen evolving mercury electrode has been studied by determining mass transfer coefficients of indicator ions as the function of current density of hydrogen evolution for various kinds of indica tor ions in sulphuric acid *** adhering to metal substrates of Ni,Cu or Ag is used as mercury electrode to overcome its trembling during the *** effect of difTerent indicator ions,electrode character istic,substrate material,diameter of electrode and temperature is *** is found that the transfer coefficient is proportional to the mass square root of current density of hydrogen evolution.

关键词： mercury electrode gas bubble mass transfer

Improving the electrochemical performance of liMn_2O_4/graphite batteries using liF additive during fabrication

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Rare Metals 2011年第2期30卷 120-125页

作者： liU Yunjian GUO Huajun li xinhai WANG Zhixing School of Material Science and Engineering Jiangsu University Zhenjiang 212013 China School of Metallurgical Science and Engineering Central South University Changsha 410083 China

liMn2O4/graphite batteries using liF additive were fabricated and their electrochemical performance including discharge, cycling and storage performances were tested and compared with liF-free liMnEO4/graphite batteries. The liMnEO4/graphite battery with liF added shows better capacity （107.5 mAh/g）, cycling performance （capacity retention ratio of 93% after 100 cycles）, and capacity recovery ratio （98.1%） than the liF-free battery. The improvement in electrochemical performance of the liF-added liMnEO4/graphite battery was due to the fact that liF can restrain the dissolution of Mn from the spinel liMn2O4 cathode into the electrolyte, leading to a smaller resistance and polariza- tion.

关键词： lithium batteries lithium fluoride additives electrochemical properties

Bulbuls and crows provide complementary seed dispersal for China's endangered trees

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Avian Research 2017年第4期8卷 226-231页

作者： Bing Bai Ning li xinhai li Changhu Lu Yunnan Forestry Technological College Kunming 650224China College of Food Science Nanjing Xiaozhuang UniversityNanjing 211171JiangsuChina Institute of Zoology Chinese Academy of SciencesBeijing 100101China Laboratory of Plant‑Animal Interactions College of Forest Resources and EnvironmentNanjing Forestry UniversityNanjing 210037China

Background: Different functional frugivores generally exhibit unequal contributions,both in terms of quantity(seed removal) and quality(seedling recruitment),to effective seed dispersal of plant ***,variations in this dispersal pattern generated by frugivores across different regions are still ***: In our study,we evaluated the contributions of two functional frugivore bird groups,the bulbuls(Pycnon?otidae) and crows(Corvidae),in both the seed removal and seedling recruitment of the endangered Chinese yew tree(Taxus chinensis) across three different geographical regions in eastern ***: The dominant crow species,Urocissa erythrorhyncha,was the most common disperser crow species at all sites,while the dominant bulbul species varied across the three ***,the two functional groups of dispersers diverged in the aspects of seed removal(quantity) and seedling recruitment pattern(quality).While bulbuls outperformed crows in seed removal(quantity),crows took more seeds to a safer site for seedlings(quality).Conclusions: Our results highlight the importance of variations in the effective seed dispersal patterns of different functional disperser groups across different regions in the conservation and management of endangered tree species.

关键词： Complementary seed dispersal Effective seed dispersal Seed removal Seedling recruitment Taxus chinensis

Spray pyrolysis synthesis of nickel-rich layered cathodes liNi_(1-2x)Co_xMn_xO_2(x = 0.075, 0.05, 0.025) for lithium-ion batteries

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Journal of Energy Chemistry 2018年第2期27卷 447-450页

作者： Yan li xinhai li Zhixing Wang Huajun Guo Jiexi Wang School of Metallurgy and Environment Central South University

In this study we report a series of nickel-rich layered cathodes liNi1-2xCoxMnxO2（x = 0.075, 0.05,0.025） prepared from chlorides solution via ultrasonic spray pyrolysis. SEM images illustrate that the samples are submicron-sized particles and the particle sizes increase with the increase of Ni ***0.85Co0.075Mn0.075O2 delivers a discharge capacity of 174.9 mAh g-1 with holding 93% reversible capacity at 1 C after 80 cycles, and can maintain a discharge capacity of 175.3 mAh g-1 at 5 C rate. With increasing Ni content, the initial specific capacity increases while the cycling and rate performance degrades in some extent. These satisfying results demonstrate that spray pyrolysis is a powerful and efficient synthesis technology for producing Ni-rich layered cathode（Ni content 〉 80%）.

关键词： lithium-ion batteries Nickel-rich layered cathode Ultrasonic spray pyrolysis Powder technology Composite materials

Bifunctional li6CoO4 serving as prelithiation reagent and pseudocapacitive electrode for lithium ion capacitors

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Journal of Energy Chemistry 2020年第8期29卷 38-45,I0002页

作者： Yuntao Guo xinhai li Zhixing Wang Huajun Guo Jiexi Wang School of Metallurgy and Environment Central South UniversityChangsha 410083HunanChina

lithium ion capacitors(liCs)have been widely used as energy storage devices due to their high energy density and high power *** liCs,pre-lithiation of negative electrode is *** this work,we employ a bifunctional li6CoO4(LCO)as cathodic pre-lithiation reagent to improve the electrochemical performance of *** synthesized LCO exhibited high first charge specific capacity of 721 mAh g-1and extremely low initial coulombic efficiency of 3.19%,providing sufficient li+ for the pre-lithiation of negative electrode in the first ***,li6–xCoOy is generated from LCO during the first charge process,which exhibits pseudocapacitive property and contributes to capacity in form of surface capacitance during subsequent cycles,increasing the capacity of capacitive positive *** the appropriate amounts of addition to the positive side in liCs,this bifunctional prelithiation reagent LCO shows significantly improved the electrochemical performance with the energy density of 78.5 Wh kg-1after 300 cycles between 2.0 and 4.2 V at 250 mA g-1.

关键词： lithium ion capacitor Prelithiation reagent Pseudocapacitive electrode li6CoO4

Spatial transmission of avian influenza (type H5) in birds

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Integrative Zoology 2009年第4期4卷 418-425页

作者： xinhai li Xiaoming liU Lei XU Zhibin ZHANG State Key Laboratory of Integrated Pest Management on Pest Insects and Rodents Institute of ZoologyChinese Academy of SciencesBeijingChina

Highly pathogenic avian influenza(HPAI)H5N1 continues to threaten domestic and wild birds,as well as human ***,the mechanism of spatial transmission of HPAI is still *** analyzed the current distribu-tion of HPAI occurrences based on World Organization for Animal Health reported data from 3049 sites in the world from December 2003 to June 2006,and found that these sites were spaced at distances with a frequency peak of 100–200 *** built a cellular automata model to simulate the spatial transmission process of HPAI as a function of transmission distance,variance of the transmission distance,infection rate,and transmission times(how many times HPAI transmits from one host to another before suppression).We determined that the transmis-sion distance between HPAI occurrences is approximately 100 km on the basis of historical HPAI occurrences from 2003 to 2006 in both wild and domestic *** effectively reduce the long-distance spreading of HPAI,preventing close contact between domestic birds and waterfowl within a radius of 100 km around HPAI occur-rence sites is essential.

关键词： avian influenza birds cellular automata model disease transmission H5N1.

Electrospinning-Enabled Si/C Nanofibers with Dual Modification as Anode Materials for High-Performance lithium-Ion Batteries

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Acta Metallurgica Sinica(English Letters) 2021年第3期34卷 329-336页

作者： Yi Yan Huajun Guo Zhixing Wang xinhai li Guochun Yan Jiexi Wang School of Metallurgy and Environment Central South UniversityChangsha 410083China Engineering Research Center of the Ministry of Education for Advanced Battery Materials Central South UniversityChangsha 410083China

In this work,silicon@reduced graphene oxide/pyrolytic carbon nanofibers(Si@RGO/C NFs)composite with double modified layer is prepared through electrospinning,stabilization and *** this composite,polyethylene oxide-polypropylene oxide-polyethylene oxide(P123,a non-ionic surfactant)is introduced as the dispersant,which can make silicon nanoparticles evenly dispersed in electrospinning solution to prevent it from *** modified layer can buffer the volumetric expansion of silicon nanoparticles,prevent direct contact between silicon and electrolyte as well as enhance the electrical ***,carbon fibers synthesized by electrospinning can encapsulate silicon@graphene composite internally to form a double modified *** composite with double modified layer can further alleviate the volume change of silicon nanoparticles and avoid direct contact between silicon and electrolyte to form a stable *** to the above-mentioned merits,the Si@RGO/C NFs composite exhibits excellent cyclic stability and superior rate ***,it maintains a specific capacity of 929 mA h g^(-1)with the retention ratio of 83.1%after 100 cycles at 0.5 A g^(-1)and delivers an outstanding rate capability of 1003 mA h g^(-1)at 2 A g^(-1).

关键词： lithium-ion batteries Silicon/carbon composite Surface modification Graphene Electrospinning