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| 1 | Recent progress of surface coating on cathode materials for high-performance lithium-ion batteries显示文摘Lithium-ion batteries (LIB) have received substantial attention in the last 10 years,as they offer great promise as power sources that can lead to the electric vehicle (EV) revolution in the next 5 years.Since the cathode serves as a key component in LIB,its properties significantly affect the performance of the whole system.Recently,the cathode surface modification based on coating technique has been widely employed to enhance the electrochemical performances by improving the material conductivity,stabilising the physical structure of materials,as well as preventing the reactions between the electrode and electrolyte.In this work,we reviewed the present of a number of promising cathode materials for Li-ion batteries.After that,we summarized the very recent research progress focusing on the surface coating strategies,mainly including the coating materials,the coating technologies,as well as the corresponding working mechanisms for cathodes.At last,the challenges faced and future guidelines for optimizing cathode materials are discussed.In this study,we propose that the structure of cathode is a crucial factor during the selection of coating materials and technologies. | Peiyuan Guan Lu Zhou Zhenlu Yu Yuandong Sun Yunjian Liu Feixiang Wu Yifeng Jiang Dewei Chu | 2020 | Journal of Energy Chemistry2020，29，4： | 28 |
| 2 | Lithium metal anodes: Present and future显示文摘Commercial lithium-ion(Li-ion)batteries based on graphite anodes are meeting their bottlenecks that are limited energy densities.In order to satisfy the large market demands of smaller and lighter rechargeable batteries,high-capacity metallic Li replacing low-specific-capacity graphite enables the higher energy density in next-generation rechargeable Li metal batteries(LMBs).However,Li metal anode has been suffering from dendritic problems,interfacial side reactions,volume change and low Coulombic efficiency.Therefore,performance enhancements of Li metal anodes are rather important to realize the high energy density characteristic of metallic Li.In this review,the annoying Li dendrite growth,unstable reaction interface and practical application issues of Li metal anodes are summarized and detailedly discussed to understand the current challenges concerning Li metal anodes.For overcoming such remaining challenges,the corresponding strategies and recent advances are covered and categorized.Finally,we discuss future opportunities and perspectives for developing high-performance Li metal anodes. | Renheng Wang Weisheng Cui Fulu Chu Feixiang Wu | 2020 | Journal of Energy Chemistry2020，29，9： | 15 |
| 3 | Preliminary report on methane emissions from the Three Gorges Reservoir in the summer drainage period显示文摘Recently reported summertime methane (CH4) emissions (6.7 ± 13.3 mg CH4/(m2·hr)) from newly created marshes in the drawdown area of the Three Gorges Reservoir (TGR), China have triggered broad concern in academic circles and among the public. The CH4 emissions from TGR water surfaces and drawdown areas were monitored from 3rd June to 16th October 2010 with floating and static chambers and gas chromatography. The average CH4 emission flux from permanently flooded areas in Zigui, Wushan and Yunyang Counties was (0.33 ± 0.09) mg CH4/(m2·hr). In half of these hottest months of the year, the wilderness, cropland and deforested drawdown sites were aerobic and located above water level, and the CH4 emissions were very small, ranging from a sink at 0.12 mg CH4/(m2·hr) to a source at 0.08 mg CH4/(m2·hr) except for one mud-covered site after flood. Mean CH4 emission in flooded drawdown sites was 0.34 mg CH4/(m2·hr). The emissions from the rice paddy sites in the drawdown area were averaged at (4.86 ± 2.31) mg CH4/(m2·hr). Excepting the rice-paddy sites, these results show much lower emission levels than previously reported. Our results indicated considerable spatial and temporal variation in CH4 emissions from the TGR. Human activities and occasional events, such as flood, may also affect emission levels. Long-term CH4 measurements and modeling in a large region are necessary to accurately estimate greenhouse gas emissions from the TGR. | Fei Lu Le Yang Xiaoke Wang Xiaonan Duan Yujing Mu Wenzhi Song Feixiang Zheng Junfeng Niu Lei Tong Hua Zheng Yongjuan Zhou Jiangxiao Qiu Zhiyun Ouyang | 2011 | Journal of Environmental Sciences2011，23，12： | 13 |
| 4 | Potential association of hyperhomocysteinemia with the progression of IgA nephropathy: a retrospective study显示文摘 | Duan Shuwei Liu Shuwen Sun Xuefeng Zheng Ying Liu Linchang Yao Feixiang Wu Jie | 2014 | Chinese Medical Journal2014，，10： | 11 |
| 5 | Tibetan Plateau: An evolutionary junction for the history of modern biodiversity显示文摘Holding particular biological resources,the Tibetan Plateau is a unique geologic-geographic-biotic interactively unite and hence play an important role in the global biodiversity domain.The Tibetan Plateau has undergone vigorous environmental changes since the Cenozoic,and played roles switching from'a paradise of tropical animals and plants'to'the cradle of Ice Age mammalian fauna'.Recent significant paleontological discoveries have refined a big picture of the evolutionary history of biodiversity on that plateau against the backdrop of major environmental changes,and paved the way for the assessment of its far-reaching impact upon the biota around the plateau and even in more remote regions.Here,based on the newly reported fossils from the Tibetan Plateau which include diverse animals and plants,we present a general review of the changing biodiversity on the Tibetan Plateau and its influence in a global scale.We define the Tibetan Plateau as a junction station of the history of modern biodiversity,whose performance can be categorized in the following three patterns:(1)Local origination of endemism;(2)Local origination and'Out of Tibet';(3)Intercontinental dispersal via Tibet.The first pattern is exemplified by the snow carps,the major component of the freshwater fish fauna on the plateau,whose temporal distribution pattern of the fossil schizothoracines approximately mirrors the spatial distribution pattern of their living counterparts.Through ascent with modification,their history reflects the biological responses to the stepwise uplift of the Tibetan Plateau.The second pattern is represented by the dispersal history of some mammals since the Pliocene and some plants.The ancestors of some Ice Age mammals,e.g.,the wholly rhino,Arctic fox,and argali sheep first originated and evolved in the uplifted and frozen Tibet during the Pliocene,and then migrated toward the Arctic regions or even the North American continent at beginning of the Ice Age;the ancestor of pantherines(big cats)first rose in Tibetan Plateau during the Pliocene,followed by the disperse of its descendants to other parts of Asia,Africa,North and South America to play as top predators of the local ecosystems.The early members of some plants,e.g.,Elaeagnaceae appeared in Tibet during the Late Eocene and then dispersed and were widely distributed to other regions.The last pattern is typified by the history of the tree of heaven(Ailanthus)and climbing perch.Ailanthus originated in the Indian subcontinent,then colonized into Tibet after the Indian-Asian plate collision,and dispersed therefrom to East Asia,Europe and even North America.The climbing perches among freshwater fishes probably rose in Southeast Asia during the Middle Eocene,dispersed to Tibet and then migrated into Africa via the docked India.These cases highlight the role of Tibet,which was involved in the continental collision,in the intercontinental biotic interchanges.The three evolutionary patterns above reflect both the history of biodiversity on the plateau and the biological and environmental effects of tectonic uplift. | Tao DENG Feixiang WU Zhekun ZHOU Tao SU | 2020 | Science China Earth Sciences2020，63，2： | 10 |
| 6 | Effects of elevated ozone on growth and yield of field-grown rice in Yangtze River Delta,China显示文摘与在 Yangtze 三角洲的快速的工业化和都市化,中国,球的臭氧集中增加了到导致的层次的对流收割收获损失。瑞斯,在中国的广泛地成年的庄稼,在建立地的、开顶的房间被调查。四个处理被使用:过滤炭的空气(CF ) , non-charcoal-filtered 空气(NF ) ,和有另外的臭氧(O3-1 和 O3-2 ) 的二个层次的过滤炭的空气。AOT40s (在 40 ppbv 上面的积累的时时吝啬的臭氧集中) 分别地是为 CF, NF, O3-1,和 O3-2 的处理的 0, 0.91, 23.24,和 39.28 ppmv · h。米饭高度和生物资源在提高的臭氧集中被减少。显著地在提高的臭氧下面划分到根的更少的有机物减少了米饭根活动。收获损失分别地在 O3-1 和 O3-2 暴露下面是 14.3% 和 20.2% 。这被减小大部分每圆锥花序在粒重引起。 | CHEN Zhan WANG Xiaoke FENG Zhaozhong ZHENG Feixiang DUAN Xiaonan YANG Wenrui | 2008 | Journal of Environmental Sciences2008，20，3： | 10 |
| 7 | A deep-bodied ginglymodian fish from the Middle Triassic of eastern Yunnan Province,China,and the phylogeny of lower neopterygians显示文摘The Ginglymodi are a group of ray-finned fishes that make up one of three major subdivisions of the infraclass Neopterygii.Ex- tant ginglymodians are represented by gars,which inhabit freshwater environments of North and Central America and Cuba.Here, we report the discovery of well-preserved fossils of a new ginglymodian,Kyphosichthys grandei gen.et sp.nov.,from the Middle Triassic(Anisian)marine deposits(Guanling Formation)in Luoping,eastern Yunnan Province,China.The discovery documents the first known fossil record of highly deep-bodied ginglymodians,adding new information on the early morphological diversity of this group.The studies of functional morphology of extant deep-bodied fishes indicate that Kyphosichthys is not a fast swim- mer but has a good performance in precise maneuvering,representing a morphological adaptation to structurally complex habitats (e.g.thick macrophyte beds,rocky areas,or coral reefs),which differs from the other members of this group.A cladistic analysis with the new fish taxon included supports the hypothesis that the Ginglymodi are more closely related to the Halecomorphi than to the Teleostei.Represented by Felberia,Kyphosichthys,and Dapedium,a highly deep and short fish body type has inde- pendently evolved at least three times in the stem-group neopterygians,ginglymodians,and basal teleosts within the lower neop- terygians of the Triassic. | XU GuangHui WU FeiXiang | 2012 | Chinese Science Bulletin2012，57，1： | 7 |
| 8 | Into Africa via docked India: a fossil climbing perch from the Oligocene of Tibet helps solve the anabantid biogeographical puzzle显示文摘The northward drift of the Indian Plate and its collision with Eurasia have profoundly impacted the evolutionary history of the terrestrial organisms, especially the ones along the Indian Ocean rim. Climbing perches(Anabantidae) are primary freshwater fishes showing a disjunct south Asian-African distribution,but with an elusive paleobiogeographic history due to the lack of fossil evidence. Here, based on an updated time-calibrated anabantiform phylogeny integrating a number of relevant fossils, the divergence between Asian and African climbing perches is estimated to have occurred in the middle Eocene(ca.40 Ma, Ma: million years ago), a time when India had already joined with Eurasia. The key fossil lineage is ?Eoanabas, the oldest anabantid known so far, from the upper Oligocene of the Tibetan Plateau.Ancestral range reconstructions suggest a Southeast Asian origin in the early Eocene(ca. 48 Ma) and subsequent dispersals to Tibet and then India for this group. Thereby we propose their westbound dispersal to Africa via the biotic bridge between India and Africa. If so, climbing perch precursors had probably followed the paleobiogeographical route of snakehead fishes, which have a slightly older divergence between African and Asian taxa. As such, our study echoes some recent molecular analyses in rejecting the previously held ‘‘Gondwana continental drift vicariance' or late Mesozoic dispersal scenarios for the climbing perches, but provides a unique biogeographical model to highlight the role of the preuplift Tibet and the docked India in shaping the disjunct distribution of some air-breathing freshwater fishes around the Indian Ocean. | Feixiang Wu Dekui He Gengyu Fang Tao Deng | 2019 | Science Bulletin2019，64，7： | 6 |
| 9 | New species of Saurichthys(Actinopterygii:Saurichthyidae)from Middle Triassic(Anisian)of Yunnan Province,China显示文摘Saurichthys dawaziensis sp。nov,从 Gejiu 形成的第三个成员(中间的 Anisian 三叠纪) 在 Luoping 的附近,云南省,一对媒介小 -- 大小的 saurichthyid 鱼。它被与一个分支在楔形的帕拉和上颚上渗透感觉运河在的传出假鳃的动脉描绘尖。新种类是在没有骨化的脊骨,有一个相对狭窄的眼窝后部的区域,短 preopercular,巩膜戒指的单个骨化,在骨盆的鳍之间的小血液的拱门和肛门鳍比更低的三叠纪的种类导出的更多,并且当 quadratojugal 不在时。它是比在在神经拱门在 prae-zygapophyses 和 post-zygapophyses 的奇鳍,和存在有 fringing fulcra 和众多的片断的中间、上面的三叠纪的 Saurichthys 更原始的。与脊椎的列和类的奇鳍有关的一些解剖变化也被讨论。 | WU Feixiang SUN Yuanlin HAO Weicheng JIANG Dayong XU Guanghui SUN Zuoyu Andrea TINTORI | 2009 | Acta Geologica Sinica(English Edition)2009，83，3： | 5 |
| 10 | Comprehensive strategy of conduit guidance combined with VEGF producing Schwann cells accelerates peripheral nerve repair显示文摘Peripheral nerve regeneration requires stepwise and well-organized establishment of microenvironment.Since local delivery of VEGF-A in peripheral nerve repair is expected to promote angiogenesis in the microenvironment and Schwann cells(SCs)play critical role in nerve repair,combination of VEGF and Schwann cells may lead to efficient peripheral nerve regeneration.VEGF-A overexpressing Schwann cells were established and loaded into the inner wall of hydroxyethyl cellulose/soy protein isolate/polyaniline sponge(HSPS)conduits.When HSPS is mechanically distorted,it still has high durability of strain strength,thus,can accommodate unexpected strain of nerve tissues in motion.A 10 mm nerve defect rat model was used to test the repair performance of the HSPS-SC(VEGF)conduits,meanwhile the HSPS,HSPS-SC,HSPS-VEGF conduits and autografts were worked as controls.The immunofluorescent co-staining of GFP/VEGF-A,Ki67 and MBP showed that the VEGF-A overexpressing Schwann cells could promote the proliferation,migration and differentiation of Schwann cells as the VEGF-A was secreted from the VEGF-A overexpressing Schwann cells.The nerve repair performance of the multifunctional and flexible conduits was examined though rat behavioristics,electrophysiology,nerve innervation to gastrocnemius muscle(GM),toluidine blue(TB)staining,transmission electron microscopy(TEM)and NF200/S100 double staining in the regenerated nerve.The results displayed that the effects on the repair of peripheral nerves in HSPS-SC(VEGF)group was the best among the conduits groups and closed to autografts.HSPS-SC(VEGF)group exhibited notably increased CD31+endothelial cells and activation of VEGFR2/ERK signaling pathway in the regenerated nerve tissues,which probably contributed to the improved nerve regeneration.Altogether,the comprehensive strategy including VEGF overexpressing Schwann cells-mediated and HSPS conduit-guided peripheral nerve repair provides a new avenue for nerve tissue engineering. | Ping Wu Zan Tong Lihua Luo Yanan Zhao Feixiang Chen Yinping Li Céline Huselstein Qifa Ye Qingsong Ye Yun Chen | 2021 | Bioactive Materials2021，6，10： | 4 |
| 11 | Soil warming effect on net ecosystem exchange of carbon dioxide during the transition from winter carbon source to spring carbon sink in a temperate urban lawn显示文摘The significant warming in urban environment caused by the combined effects of global warming and heat island has stimulated widely development of urban vegetations.However,it is less known of the climate feedback of urban lawn in warmed environment.Soil warming effect on net ecosystem exchange(NEE)of carbon dioxide during the transition period from winter to spring was investigated in a temperate urban lawn in Beijing,China.The NEE(negative for uptake)under soil warming treatment(temperature was about 5°C higher than the ambient treatment as a control)was-0.71 μmol/(m2·sec),the ecosytem was a CO2 sink under soil warming treatment,the lawn ecosystem under the control was a CO2 source(0.13μmol/(m2·sec)),indicating that the lawn ecosystem would provide a negative feedback to global warming.There was no significant effect of soil warming on nocturnal NEE(i.e.,ecosystem respiration),although the soil temperature sensitivity(Q10) of ecosystem respiration under soil warming treatment was 3.86,much lower than that in the control(7.03).The CO2 uptake was significantly increased by soil warming treatment that was attributed to about 100% increase of α(apparent quantum yield)and Amax(maximum rate of photosynthesis).Our results indicated that the response of photosynthesis in urban lawn is much more sensitive to global warming than respiration in the transition period. | Xiaoping Zhou Xiaoke Wang Lei Tong Hongxing Zhang Fei Lu Feixiang Zheng Peiqiang Hou WenzhiSong Zhiyun Ouyang | 2012 | Journal of Environmental Sciences2012，24，12： | 4 |
| 12 | In situ growth of 3D walnut-like nano-architecture Mo-Ni2P@NiFeLDH/NF arrays for synergistically enhanced overall water splitting显示文摘The in situ growth of nano-array on material structure is a novel and high-efficient strategy to design catalysts,however,it still remains a challenge to fabricate unique nano-architecture electrocatalyst with prominent activity and superior durability for oxygen evolution reaction(OER)and hydrogen evolution reaction(HER).Herein,a unique nano-architecture catalyst is successfully synthesized by using NiFe LDH nanosheets as framework to the in situ growth Mo-doped Ni2 P ultrafine nanosheets(marked as Mo-Ni2 P@NiFe LDH/NF).The unique 3 D core-shell nano-architecture is favorable for enhancing electron transfer/mass diffusion,providing abundant active sites,prompting O2/H2 gas release,and creating the synergistic effect between Mo-Ni2 P and NiFe LDH.Therefore,comparing with pure NiFe LDH/NF and MoNi2 P/NF electrodes,walnut-like Mo-Ni2 P@Ni Fe LDH/NF catalyst exhibits significantly improved electrocatalytic activities and durability towards OER(269 m V@40 m A cm^-2),HER(82 mV@10 mA cm^-2),and overall water splitting(1.46 V@10 m A cm^-2),respectively.Such electrocatalytic activity of Mo-Ni2 P@NiFe LDH/NF is comparable with that of majority reported non-precious metal catalysts and even precious catalysts(IrO2 and Pt/C).This work presents a new perspective strategy to fabricate ingeniously bifunctional electrocatalysts with well-designed structure and superior performance for clean energy conversion technologies or storage devices. | Zhi Yang Yu Lin Feixiang Jiao Jinhui Li Jinlei Wang Yaqiong Gong | 2020 | Journal of Energy Chemistry2020，29，10： | 4 |
| 13 | Recent Advances and Applications Toward Emerging Lithium–Sulfur Batteries:Working Principles and Opportunities显示文摘Lithium–sulfur(Li-S)batteries have been considered as promising candidates for large-scale high energy density devices due to the potentially high energy density,low cost,and more pronounced ecological compatibility.However,the complex Li-S conversion reactions,unsatisfactory battery performance,and unsafe metallic Li anode restrict the development of Li-S batteries to achieve commercialization.This review mainly focuses on three aspects which are the remaining challenges,recent advances,and applications in Li-S batteries.Firstly,this review portrays Li-S conversion chemistry involving the multi-step and multi-electron reaction mechanism,as well as the remaining challenges.Then,the scientific strategies and very recent advances of the cathode,electrolyte,lithium anode,and other constituent parts of Li-S batteries are detailly summed up,as well as their advantages and limitations.For the sake of promoting the Li-S batteries practicalization,next section is primarily concerned with problems,the corresponding solutions,and application scenarios of practical pouch cells.Finally,the important findings as guidelines and some future directions as trends for developing emerging Li-S batteries are briefly summarized. | Rongyu Deng Meng Wang Huanyu Yu Shunrui Luo Jinhui Li Fulu Chu Bin Liu Feixiang Wu | 2022 | Energy & Environmental Materials2022，5，3： | 3 |
| 14 | Design and experiment of electro hydraulic active suspension for controlling the rolling motion of spray boom显示文摘Boom sprayer is one of the most commonly used plant protection machinery for spraying pesticide.Studies have shown that the efficiency of chemicals is highly correlated with the uniformity of spray distribution patterns.As the boom is a large and flexible structure,boom rolling leads to overlapping and leakage of the pesticides.In order to improve spray uniformity,the boom attitude should be kept parallel to the ground slope or to the crop canopy beneath the boom.Passive suspension can attenuate frequencies above its resonance frequency,but nothing can be done to align the boom to the sloping ground.Therefore,an active suspension system is designed,which includes DSP-based controller,a servo valve,a hydraulic cylinder,two ultrasonic sensors,one inertial attitude sensor,and the developed control procedures.In order to prevent the wrong response of the control system caused by the high frequency component due to uneven crop canopy or rough ground.A special signal processing algorithm was proposed,including the limiting filter,smoothing algorithm and data fusion algorithm based on optimal weight.The transient and steady-state performances of the boom control system using velocity feedforward PID algorithm were tested on a six DOF motion simulator.It can be seen that the low-frequency tracking performance of the boom was greatly improved after the electro-hydraulic active suspension was added.At the resonance frequency,the peak angle of active suspension and passive suspensions are 0.72°and 1.29°respectively,and the resonance peak is greatly reduced.The controller was implemented on a self-propelled boom sprayer and validated under field conditions,the standard deviation of the roll angle of the boom with active suspension is 0.40°,compared with 1.04°of the sprayer chassis.Experimental results show that the active suspension control system can effectively reduce the effect of ground excitation disturbance on the application process,and has good tracking performance for low frequency terrain change. | Longfei Cui Xinyu Xue Feixiang Le Hanping Mao Suming Ding | 2019 | International Journal of Agricultural and Biological Engineering2019，12，4： | 3 |
| 15 | Rearrangement on surface structures by boride to enhanced cycle stability for LiNi0.80Co0.15Al0.05O2 cathode in lithium ion batteries显示文摘The side reaction between the active material and liquid-electrolyte cause structural damage and particle pulverization is one of the important factors leading to the capacity decay of LiNi0.80Co0.15Al0.05O2(NCA)materials in Li ion batteries(LIBs).Surface modification is an effective strategy for NCA cathodes,which could alleviate the degradation associated with surface processes.Herein,a surface structure rearrangement of NCA cathode secondary particles was reported by in-situ forming a solid electrolyte LiBO2.The LiBO2 is beneficial for alleviating the stress during charge/discharge process,thereby slowing down the rate of cracks formation in the secondary particles,which facilitates the Li+de-intercalation as well as prevents penetration of the liquid-electrolyte into the interior of the particles.As a result,the surface structure rearrangement NCA(RS-NCA)delivers a high discharge capacity of 202.5 m Ah g^-1 at 0.1 C,and exhibits excellent cycle stability with discharge capacity retaining 148 m Ah g^-1 after 200 cycles at 2 C.This surface structure rearrangement approach provides a new viewpoint in designing high-performance high-voltage LIBs. | Shubiao Xia Wenjin Huang Xiang Shen Jiaming Liu Feixiang Cheng Jian-Jun Liu Xiaofei Yang Hong Guo | 2020 | Journal of Energy Chemistry2020，29，6： | 3 |
| 16 | BSA-seq-based identification of a major additive plant height QTL with an effect equivalent to that of Semi-dwarf 1 in a large rice F_(2) population显示文摘Bulked-segregant analysis is a time-and cost-saving strategy for identifying major quantitative trait loci(QTL) in a mapping population. Bulked-segregant analysis combined with whole-genome sequencing(BSA-seq) was performed to rapidly identify QTL for heading date, plant height, and panicle length in a large F_(2) population derived from two landraces: Chuan 7(C7) and Haoboka(HBK). Twenty plants with extremely low or high phenotypic values for the target traits were selected from an F_(2) population of 940 plants to construct low-and high-value bulks. Three pairs of bulks for the three traits were constructed, resulting in six DNA pools. BSA-seq revealed nine QTL: four for heading date, three for plant height, and two for panicle length. These QTL were validated in a random F_(2) population or BC_(4)F_(2) populations. The major novel plant height QTL, qPH8, acting additively with an effect equivalent to that of semi-dwarf 1(sd1), is potentially valuable for hybrid rice breeding. qPH8 controls mainly the elongation of basal internodes. The C7 allele of qPH8 reduces plant height and increases lodging resistance without yield penalty, suggesting a potential role for qPH8 in improving rice plant architecture. | Bo Zhang Feixiang Qi Gang Hu Yikai Yang Li Zhang Jianghu Meng Zhongmin Han Xiangchun Zhou Haiyang Liu Mohammed Ayaad Yongzhong Xing | 2021 | The Crop Journal2021，9，6： | 3 |
| 17 | Evidence for charge and spin density waves in single crystals of La_(3)Ni_(2)O_(7) and La_(3)Ni_(2)O_(6)显示文摘Charge and spin orders are intimately related to superconductivity in copper oxide superconductors.Elucidation of the competing orders in various nickel oxide compounds is crucial,given the fact that superconductivity has been discovered in Nd_(0.8)Sr_(0.2)NiO_(2)films.Herein,we report structural,electronic transport,magnetic,and thermodynamic characterizations of single crystals of La_(3)Ni_(2)O_(7)and La_(3)Ni_(2)O_(6).La_(3)Ni_(2)O_(7)is metallic with mixed Ni^(2+)and Ni^(3+)valent states.Resistivity measurements yield two transition-like kinks at~110 and 153 K.The kink at 153 K is further revealed from magnetization and specific heat measurements,indicative of the formation of charge and spin density waves.La_(3)Ni_(2)O_(6)single crystals obtained from the topochemical reduction of La_(3)Ni_(2)O_(7)are insulating and show an anomaly at~176 K on magnetic susceptibility.The transition-like behaviors of La_(3)Ni_(2)O_(7)and La_(3)Ni_(2)O_(6)are analogous to those observed in La_(4)Ni_(3)O_(10) and La_(4)Ni_(3)O_(8),suggesting that charge and spin density waves are a common feature in the ternary La-Ni-O system with mixed-valent states of nickel. | Zengjia Liu Hualei Sun Mengwu Huo Xiaoyan Ma Yi Ji Enkui Yi Lisi Li Hui Liu Jia Yu Ziyou Zhang Zhiqiang Chen Feixiang Liang Hongliang Dong Hanjie Guo Dingyong Zhong Bing Shen Shiliang Li Meng Wang | 2023 | Science China(Physics,Mechanics & Astronomy)2023，66，1： | 2 |
| 18 | Pliocene flora and paleoenvironment of Zanda Basin, Tibet, China显示文摘This paper describes a plant megafossil assemblage from the Pliocene strata of Xiangzi, Zanda Basin in the western Qinghai-Tibet Plateau. Twenty-one species belonging to 12 genera and 10 families were identified. Studies show that the Pliocene vegetation in Zanda Basin was mostly deciduous shrub composed of Cotoneaster, Spiraea, Caragana, Hippophae,Rhododendron, Potentilla fruticosa, etc. Leaf sizes of these taxa were generally small. Paleoclimate reconstruction using Coexistence Analysis and CLAMP showed that this area had higher temperature and precipitation in the Pliocene than today, and distinct seasonal precipitation variability was established. The reconstructed paleoelevation of Zanda Basin in the Pliocene was similar to modern times. In the context of central Asian aridification, the gradual drought in the area beginning in the late Cenozoic caused vegetation to transition from shrub to desert, and the flora composition also changed. | Jian HUANG Tao SU Shufeng LI Feixiang WU Tao DENG Zhekun ZHOU | 2020 | Science China Earth Sciences2020，63，2： | 2 |
| 19 | Single color image super-resolution using sparse representation and color constraint显示文摘Color image super-resolution reconstruction based on the sparse representation model usually adopts the regularization norm(e.g.,L1 or L2).These methods have limited ability to keep image texture detail to some extent and are easy to cause the problem of blurring details and color artifacts in color reconstructed images.This paper presents a color super-resolution reconstruction method combining the L2/3 sparse regularization model with color channel constraints.The method converts the low-resolution color image from RGB to YCbCr.The L2/3 sparse regularization model is designed to reconstruct the brightness channel of the input low-resolution color image.Then the color channel-constraint method is adopted to remove artifacts of the reconstructed highresolution image.The method not only ensures the reconstruction quality of the color image details,but also improves the removal ability of color artifacts.The experimental results on natural images validate that our method has improved both subjective and objective evaluation. | XU Zhigang MA Qiang YUAN Feixiang | 2020 | Journal of Systems Engineering and Electronics2020，31，2： | 2 |
| 20 | Hydrological Services by Mountain Ecosystems in Qilian Mountain of China: A Review显示文摘Hydrological service is a hot issue in the current researches of ecosystem service, particularly in the upper reaches of mountain rivers in dry land areas, where the Qilian Mountain is a representative one. The Qilian Mountain, where forest, shrubland and grassland consist of its main ecosystems, can provide fresh water and many other ecosystem services, through a series of eco-hydrological process such as precipitation interception, soil water storage, and fresh water provision. Thus, monitoring water regulation and assessing the hydrological service of the Qilian Mountain are meaningful and helpful for the healthy development of the lower reaches of arid and semi-arid areas. In recent 10 years, hydrological services have been widely researched in terms of scale and landscape pattern, including water conservation, hydrological responses to afforestation and their ecological effects. This study, after analyzing lots of current models and applications of geographical information system(GIS) in hydrological services, gave a scientific and reasonable evaluation of mountain ecosystem in eco-hydrological services, by employing the combination of international forefronts and contentious issues into the Qilian Mountain. Assessments of hydrological services at regional or larger scales are limited compared with studies within watershed scale in the Qilian Mountain. In our evaluation results of forest ecosystems, it is concluded that long-term observation and dynamic monitoring of different types of ecosystem are indispensable, and the hydrological services and the potential variation in water supplement on regional and large scales should be central issues in the future research. | SUN Feixiang LYU Yihe FU Bojie HU Jian | 2016 | Chinese Geographical Science2016，26，2： | 2 |
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