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1财政支出的部门配置与中国产业结构升级——基于生产网络模型的分析显示文摘本文通过将生产网络引入一个多部门一般均衡模型,分析了财政支出的部门配置对GDP、福利和产业结构的影响。本文证明在较为一般的假设条件下,GDP(从而财政支出乘数)以及家庭福利与财政支出的部门配置无关,但产业结构受财政支出部门配置的影响。基于对部门财政支出结构效应的分解,本文利用中国投入产出表数据分析了财政支出部门配置的边际调整对产业结构升级的影响,发现将财政支出从“高污染、高耗能”的限制产业向高新技术产业调整1元最多可使高新技术产业增加值与限制产业相比提高0.9958元。本文的研究结论意味着财政支出政策的运用有望兼顾“稳增长”和“调结构”,即先从“稳增长”视角决定财政支出总量,再从“调结构”视角将财政支出配置在不同部门,从而为财政政策实施提供了新启发。齐鹰飞 LI Yuanfei 2020经济研究2020,55,4:34
2跨国投入产出网络中的贸易摩擦——兼析中美贸易摩擦的就业和福利效应显示文摘本文以2018年发生的中美贸易摩擦为背景,通过构建跨国投入产出网络模型刻画了关税冲击的传导机制。研究发现,关税冲击导致本国出口下降,同时加征的关税作为转移支付会提高外国的家庭收入并扩大本国消费品出口,此一负一正两种初始效应沿跨国投入产出网络向上游传导,最终形成负向的直接需求侧效应和正向的间接需求侧效应;关税冲击还通过影响相对价格增加下游行业的成本,这种效应沿跨国投入产出网络向下游传导,最终形成负向的供给侧资源再配置效应。在此基础上,本文就四轮关税加征对中美两国就业和福利的影响进行了模拟分析。结果表明,冲击在投入产出网络中的传导使得各行业关税升幅与就业损失之间存在不一致性。同时,虽然两国的总就业和福利均有所下降,但二者降幅在两国间存在非对称性,中国的福利损失高于美国,而美国就业下降的百分比高于中国。齐鹰飞 LI Yuanfei 2019财贸经济2019,40,5:24
3Recent progress and future prospects of oil-absorbing materials显示文摘Oil and organic solvent contamination, derived from oil spills and organic solvent leakage, has been recognized as one of the major environmental issues imposing a serious threat to both human and ecosystem health. Among the various presented technologies applied for oil/water separation, oil absorption process has been explored widely and offers satisfactory results especially with surface modified oil-absorbing material and/or hybrid absorbents. In this review, we summarize the recent research activities involved in the designing strategies of oil-absorbing absorbents and their application in oil absorption. Then, an extensive list of various oil-absorbing materials from literature, including polymer materials, porous inorganic materials and biomass materials, has been compiled and the oil adsorption capacities toward various types of oils and organic solvents as available in the literature are presented along with highlighting and discussing the various factors involved in the designing of oil-absorbing absorbents tested so far for oil/water separation. Finally, some future trends and perspectives in oil-absorbing material are outlined.Tao Zhang Zhangdi Li Yuanfei Lü Yu Liu Dongya Yang Qiurong Li Fengxian Qiu 2019Chinese Journal of Chemical Engineering2019,27,6:14
4Receptome profiling identifies KREMEN1 and ASGR1 as alternative functional receptors of SARS-CoV-2显示文摘Host cellular receptors play key roles in the determination of virus tropism and pathogenesis.However,little is known about SARS-CoV-2 host receptors with the exception of ACE2.Furthermore,ACE2 alone cannot explain the multi-organ tropism of SARS-CoV-2 nor the clinical differences between SARS-CoV-2 and SARS-CoV,suggesting the involvement of other receptor(s).Here,we performed genomic receptor profiling to screen 5054 human membrane proteins individually for interaction with the SARS-CoV-2 capsid spike(S)protein.Twelve proteins,including ACE2,ASGR1,and KREMEN1,were identified with diverse S-binding affinities and patterns.ASGR1 or KREMEN1 is sufficient for the entry of SARS-CoV-2 but not SARS-CoV in vitro and in vivo.SARS-CoV-2 utilizes distinct ACE2/ASGR1/KREMEN1(ASK)receptor combinations to enter different cell types,and the expression of ASK together displays a markedly stronger correlation with virus susceptibility than that of any individual receptor at both the cell and tissue levels.The cocktail of ASK-related neutralizing antibodies provides the most substantial blockage of SARS-CoV-2 infection in human lung organoids when compared to individual antibodies.Our study revealed an interacting host receptome of SARS-CoV-2,and identified ASGR1 and KREMEN1 as alternative functional receptors that play essential roles in ACE2-independent virus entry,providing insight into SARS-CoV-2 tropism and pathogenesis,as well as a community resource and potential therapeutic strategies for further COVID-19 investigations.Yunqing Gu Jun Cao Xinyu Zhang Hai Gao Yuyan Wang Jia Wang Juan He Xiaoyi Jiang Jinlan Zhang Guanghui Shen Jie Yang Xichen Zheng Gaowei Hu Yuanfei Zhu Shujuan Du Yunkai Zhu Rong Zhang Jianqing Xu Fei Lan Di Qu Guoliang Xu Yun Zhao Dong Gao Youhua Xie Min Luo Zhigang Lu 2022Cell Research2022,32,1:8
5Fabrication and characterization of laminated Ti-(TiB + La_2O_3)/Ti composite显示文摘The incorporation of ceramic particulate reinforcements into titanium alloys can improve the specific strength and specific stiffness,while inevitably reduce the plasticity and ductility.In this study,in situ synthesized multilayer Ti-(TiB +La_2O_3)/Ti composite was designed by learning from the microstructure of nature biological materials with excellent mechanical properties.The Ti-(TiB + La_2O_3)/Ti composite with unique characteristic of laminated structure was prepared by combined powder metallurgy and hot rolling.The method has the synthesize advantages with in-situ reaction of Ti and LaB_6 at high temperature and controllability of reinforcements size and constituent phases in composites.The result shows that the pores in the as sintered laminated structure composite completely disappeared after hot rolling at 1050℃.The agglomerated reinforcement particles were well dispersed and distributed uniformly along the rolling direction.The thickness of pure Ti layer and(TiB+La_2O_3)/Ti composite layer decreased from 1 mm to about 200 μm.Meanwhile,the grains size was refined obviously after rolling deformation.The room temperature tensile test indicates that the elongation of the laminated Ti-(TiB + La_2O_3)/Ti composite improved from 13%to 17%in comparison with the uniform(TiB + La_2O_3)/Ti composite,while the tensile strength had little change.It provides theoretical and experimental basis for fabricating the novel high performance laminated Ti-(TiB + La_2O_3)/Ti composites.Yuanfei Han Hongqiang Duan Weijie Lu Liqiang Wang Di Zhang 2015Progress in Natural Science:Materials International2015,25,5:8
6Rapid in-situ reaction synthesis of novel TiC and carbon nanotubes reinforced titanium matrix composites显示文摘In-situ TiC and remained multi-walled carbon nanotubes(MWCNTs) reinforced Ti composites were synthesized using vacuum hot-press sintering and hot rolling. The effect of weight fraction of MWCNTs on microstructural evolution and mechanical properties of the Ti composites was investigated. The results indicated that both proportion and particle size of TiC increased in proportion to MWCNTs content, which resulted in different matrix microstructure, and the grains were obviously refined after rolling deformation. The hardness tests indicated that MWCNTs addition could make the composites harden, and 18.4%improvement in hardness was obtained after hot rolling. The significant improvement in both strength and hardness could be attributed to grain refinement, solid solution strengthening of carbon and dispersion strengthening of TiC particles and remained MWCNTs. A good combination of strength and ductility were achieved in Ti–1 wt% MWCNTs composites, which were in accordance with the uniform distribution of smaller-sized TiC particles in Ti matrix.Xianglong Sun Yuanfei Han Sanchen Cao Peikun Qiu Weijie Lu 2017Journal of Materials Science & Technology2017,33,10:6
7Antibiotic Metabolites from the Coral-Associated Actinomycete Streptomyces sp. OUCMDZ-1703显示文摘从软联系珊瑚的放射菌类紧张的寡营养的文化, Streptomyces sp。 OUCMDZ-1703 ,我们孤立并且识别我们把 strepchloritides 称为 A 和 B ( 1 和 2 )的二新使氯化的 polyketides ,作为 watasemycin A ( 3 )知道的三 thiazole 衍生物, pulicatin G ( 4 )和 aerugine ( 5 )与 pyrrole-2-carboxamide 一起, furan-2-carboxamide 和1-( 3,5-dihydroxyphenyl ) ethanone 。1 和 2 的新结构被象 1D-NMR 和 2D-NMR 和 MS 分析那样的分光镜的研究决定,当已知的混合物被 NMR 数据的比较在文学与那些识别时。结果证明放射菌类种类 OUCMDZ-1703 能在寡营养的媒介使用氯的相对高比率综合使氯化的自然产品。新混合物 1 和 2 与 9.9 和 20.2 的 IC50 价值对 MCF-7 房间显示了 cytotoxicity ?? 愠杮' 讙贅 H 敮 ???????? 寓??Peng Fu Fandong Kong Yuanfei Wang Yi Wang Peipei Liu Guoying Zuo Weiming Zhu 2013Chinese Journal of Chemistry2013,31,1:5
8Classification and comparison of physical and chemical properties of corn stalk from three regions in China显示文摘Corn stalk samples from Anhui,Jiangxi and Shanghai were used as test materials.Their physical,chemical and thermo-chemical engineering characteristics were analyzed.The similarities and differences in properties of corn stalk from the three regions were determined using SIMCA-P and SPSS software in order to obtain a proper energy utilization method of corn stalk.The results show that the corn stalk from Shanghai has significant differences from the samples of Jiangxi and Anhui.In particular,the following properties of corn stalk from Shanghai such as the contents of cellulose,calcium(Ca),iron(Fe),crude ash,volatile matter,carbon(C),nitrogen(N),and oxygen(O)are significantly different from those of Jiangxi and Anhui samples(P<0.05).While other properties such as the contents of magnesium(Mg),copper(Cu),zinc(Zn),moisture,hydrogen(H),and sulfur(S)have no significant difference among samples of three regions.Compared with the corn stalk in Anhui and Jiangxi,the Shanghai samples are more suitable for the production of ethanol because of their higher ratio of cellulose to hemi-cellulose content.Because of its high content of ash and low calorific value,the Shanghai corn stalk is suitable for the gasification process instead of for direct combustion or bio-oil production.The research can provide a reference for raw material selection for biomass energy production and utilization.Wang Lu Liu Ronghou Sun Chen Cai Wenfei Tao Yiwei Yin Renzhan Mei Yuanfei 2014International Journal of Agricultural and Biological Engineering2014,7,6:5
9Empowering fall webworm surveillance with mobile phone-based community monitoring: a case study in northern China显示文摘Recent advances in information and communication technologies, such as mobile Internet and smartphones, have created new paradigms for participatory environment monitoring. The ubiquitous mobile phones with capabilities such as a global positioning system,camera, and network access, offer opportunities to establish distributed monitoring networks that can perform a wide range of measurements for a landscape. This study examined the potential of mobile phone-based community monitoring of fall webworm(Hyphantria cunea Drury).We built a prototype of a participatory fall webworm monitoring system based on mobile devices that streamlined data collection, transmission, and visualization. We also assessed the accuracy and reliability of the data collected by the local community. The system performance was evaluated at the Ziya commune of Tianjin municipality in northern China, where fall webworm infestation has occurred. The local community provided data with accuracy comparable to expert measurements(Willmott's index of agreement>0.85). Measurements by the local community effectively complemented remote sensing images in both temporal and spatial resolution.Chengbo Wang Yanyou Qiao Honggan Wu Yuanfei Chang Muyao Shi 2016Journal of Forestry Research2016,27,6:4
10Nitrification Potential of Soils Under Liquid Incubation Conditions显示文摘A red soil, a fluvo-aquic soil and a permeable paddy soil were used in a long-term investigation to study changes in nitrification with treatments: 1) soil incubation, 2) liquid incubation inoculated with soil samples, and 3) liquid incubation inoculated with ammonia-oxidizing bacteria (AOB) from the soils. There were significant differences (P < 0.001) in nitrification rates among the three soils when measured for 28 days by adding (NH4)SO4 at the rate of 154 mg N kg-1 dry soil to fresh soil. However, the amounts of nitrifying bacteria in the three soils were not related to soil nitrification capacity. When the soil samples or the isolates of AOB enriched from the corresponding soil were incubated in liquid with pH 5.8, 7.0 and 8.0 buffers and 10 mmol L-1 ammonium nitrogen, there were no significant nitrification differences in the same soil type at each pH. The ability to oxidize ammonia through AOB from different types of soils in a homogeneous culture medium was similar, and the soil nitrification capacity could reflect the inherent properties of a soil. Altering the culture medium pH of individual soil type also showed that acidification of an alkaline fluvo-aquic soil decreased nitrification capacity, whereas alkalinization of the acidic red soil and permeable paddy soil increased their nitrification. For a better insight into factors influencing soil nitrification processes, soil properties including texture and clay composition should be considered.YUANFei RANWei SHENQi-Rong 2005Pedosphere2005,15,3:4
11Effects of cerium substitution on phase components, microstructures and magnetic properties of Nd-Fe-Ti-B alloy显示文摘(Nd(1-x)Cex)(12)Fe(77)Ti5B6(x=0,0.2,0.3,0.4,0.6,0.8)alloys were prepared by melt-spinning and annealing techniques.The phase constitutions,microstructures and magnetic properties were investigated by powder X-ray diffraction(XRD),a differential scanning calorimeter(DSC),a vibrating sample magnetometer(VSM)and a transmission electron microscope(TEM).It is found that with the increase of Ce content,the coercivity of the(Nd(1-x)Cex)(12)Fe(77)Ti5B6 alloys reaches maximum first and then decreases.The maximum coercivity reaches 18.5 kOe obtained in the sample of 20%Ce substituted which is 34%higher than the Ce-free sample.TEM results reveal that the micro structure refinement effect is responsible for the coercivity improvement.This phenomenon implies that in some cases,Ce and Ti co-doping is more beneficial to improving of the coercivity than Ti single doping in Nd-Fe-B alloys.With further Ce addition,magnetic properties deteriorate due to the formation of CeFe2 and TbCu7-type phases.Haijun Peng Yang Luo Yakun Dou Xinyuan Bai Wenlong Yan Dunbo Yu Yuanfei Yang Shulin Diao 2019Journal of Rare Earths2019,37,8:4
12Characterization of the hot deformation behavior of a Ti–22Al–25Nb alloy using processing maps based on the Murty criterion显示文摘Xiong Ma Weidong Zeng Bin Xu Yu Sun Chen Xue Yuanfei Han 2011Intermetallics2011,,1:3
13A Review: Enhanced Anodes of Li/Na-Ion Batteries Based on Yolk–Shell Structured Nanomaterials显示文摘Lithium-ion batteries(LIBs) and sodium-ion batteries(SIBs) have received much attention in energy storage system. In particular, among the great efforts on enhancing the performance of LIBs and SIBs, yolk–shell(YS) structured materials have emerged as a promising strategy toward improving lithium and sodium storage. YS structures possess unique interior void space, large surface area and short diffusion distance, which can solve the problems of volume expansion and aggregation of anode materials, thus enhancing the performance of LIBs and SIBs. In this review, we present a brief overview of recent advances in the novel YS structures of spheres, polyhedrons and rods with controllable morphology and compositions. Enhanced electrochemical performance of LIBs and SIBs based on these novel YS structured anode materials was discussed in detail.Cuo Wu Xin Tong Yuanfei Ai De-Sheng Liu Peng Yu Jiang Wu Zhiming M.Wang 2018Nano-Micro Letters2018,10,3:2
14Work Hardening Behavior of 1020 Steel During Cold-Beating Simulation显示文摘The present research of cold-beating formation mainly focused on roller design and manufacture, kinematics, constitutive relation, metal flow law, thermo-mechanical coupling, surface micro-topography and microstructure evolution. However, the research on surface quality and performance of workpieces in the process of cold-beating is rare. Cold-beating simulation experiment of 1020 steel is conducted at room temperature and strain rates ranging from 2000 to 4000 s^(-1) base on the law of plastic forming. According to the experimental data, the model of strain hardening of 1020 steel is established,Scanning Electron Microscopy(SEM) is conducted, the mechanism of the work hardening of 1020 steel is clarified by analyzing microstructure variation of 1020 steel. It is found that the strain rate hardening effect of 1020 steel is stronger than the softening effect induced by increasing temperatures, the process of simulation cold-beating cause the grain shape of 1020 steel significant change and microstructure elongate significantly to form a fibrous tissue parallel to the direction of deformation, the higher strain rate, the more obvious grain refinement and the more hardening effect. Additionally, the change law of the work hardening rate is investigated, the relationship between dislocation density and strain, the relationship between work hardening rate and dislocation density is obtained.Results show that the change trend of the work hardening rate of 1020 steel is divided into two stages, the work hardening rate decreases dramatically in the first stage and slowly decreases in the second stage, finally tending toward zero. Dislocation density increases with increasing strain and strain rate, work hardening rate decreases with increasing dislocation density. The research results provide the basis for solving the problem of improving the surface quality and performance of workpieces under cold-beating formation of 1020 steel.Fengkui CUI Yuanfei LING Jinxue XUE Jia LIU Yuhui LIU Yan LI 2017Chinese Journal of Mechanical Engineering2017,30,2:2
15Insight into the formation mechanism and interaction of matrix/TiB whisker textures and their synergistic effect on property anisotropy in titanium matrix composites显示文摘Considerable studies on processed pure titanium and titanium alloys have proved the possibility of prop-erty anisotropy induced by crystallographic textures,but limited information is available for the intrinsic coupling of matrix and reinforcement textures and their synergistic effect on property anisotropy in tita-nium matrix composite(TMCs).In the present work,an advanced EBSD/EDS coupling method was used to investigate the formation mechanism of primaryαand secondaryαtextures in the matrix alloy.It is revealed for the first time that the reinforcement TiB_(w)displays a{100}<010>texture after hot rolling and has little effect on the matrix texture component but weakens texture intensity.Significant anisotropies in the tensile strength and ductility can be all noted at room and high-temperatures,which is the syn-ergistic effect of the matrix texture and the aligned TiB_(w).The mean Schmid factor of each slip system was calculated to evaluate the influence of matrix texture on the minimum active stress of slip deforma-tion in the different tensile directions.The analysis shows that the strong T-type matrix texture results in higher strength but lower ductility when loaded in the transverse direction.Moreover,a generalized shear-lag model was modified to quantitatively evaluate the strengthening contribution of aligned TiB_(w),which decreases with increasing off-axis angle and test temperature.A new parameter,defined as the critical aspect ratio of the off-axis whisker,was proposed to rationalize why the TiB_(w) failure mechanism converts from TiB_(w) fracture to TiB_(w)/matrix interfacial debonding with increasing off-axis angle and test temperature.Jianwen Le Yuanfei Han Peikun Qiu Shaopeng Li Guangfa Huang Jianwei Mao Weijie Lu 2022Journal of Materials Science & Technology2022,,15:2
16Effects of different amino acid levels and a carvacrol-thymol blend on growth performance and intestinal health of weaned pigs显示文摘Background:Over the past years,antibiotic growth promoter had been restricted in animal husbandry production in many countries because of antimicrobial resistance and foodborne antibiotic residues.However,the problems of poor intestinal health and low growth efficiency of piglets have not been solved completely in an antibiotic-free diet,and it is urgent to explore alternatives to antimicrobial growth promoters.Methods:Here,a total of 532 weaned pigs were assigned to one of 4 treatments,the low amino acid(AA)level diet(d 1 to d 14 is 1.35%,d 15 to d 42 is 1.25%)(Low AA),the low AA level diet supplementation with a carvacrol-thymol blend(50 mg carvacrol and 50 mg thymol/kg of diet)(CB)(Low AA+CB),the high AA level diet(d 1 to d 14 is 1.50%,d 15 to d 42 is 1.40%)(High AA),and the high AA level diet supplementation with a CB(High AA+CB),respectively.Then we measured growth performance and intestinal health indicators of weaned pigs.Results:Results showed that high AA level significantly reduced plasma urea nitrogen,plasma Interleukin-6(IL-6)and fecal lipocalin-2 contents(P<0.05),significantly increased the relative abundance of fecal Lactobacillus and Enterococcus,and had a trend to increase the fecal secretory immunoglobulin A(sIgA)and mucin 2(MUC 2)contents(P<0.05)in piglets,thereby alleviating the diarrhea of piglets and reducing the feed conversion ratio(FCR)of piglets during d 1~14 after weaning.Dietary supplementation with CB significantly increased the activity of plasma antioxidant enzymes T-SOD and GSH-px(P<0.05),while significantly reduced plasma malondialdehyde(MDA),plasma interleukin-1β(IL-1β),plasma endotoxin and D-lactic acid contents(P<0.05).Meanwhile,CB significantly decreased fecal lipocalin-2 contents and the abundance of fecal Escherichia coli(P<0.05).Thus,we hypothesis that dietary supplementation with CB significantly increased the average daily gain(ADG)of piglets(P<0.05)during d 1~14 after weaning through promoting intestinal health.Conclusion:These results suggest that high AA level and dietary supplementation with CB improved the growth performance of weaned pigs in an antibiotic-free diet by improving AA metabolism and intestinal antioxidant capacity.Yanan Wang Zhipeng Yang Yuanfei Zhou Jiajian Tan Haiqing Sun Defa Sun Yuyun Mu Jian Peng Hongkui Wei 2022Journal of Animal Science and Biotechnology2022,13,5:2
17Chitosan-Zn Chelate Increases Antioxidant Enzyme Activity and Improves Immune Function in Weaned Piglets显示文摘Yuanfei Ma Qichun Huang Mengyuan Lv Zhipeng Wu Zhengjun Xie Xinyan Han Yizhen Wang 2014Biological Trace Element Research2014,,1:2
18Transcriptional response of porcine skeletal muscle to feeding a linseed-enriched diet to growing pigs显示文摘Background: To investigate the effect of feeding a linseed-enriched diet to growing-finishing pigs on gene expression in skeletal muscle, pigs were fed with a linseed-enriched diet for 0, 30, 60 and 90 d. Transcriptional profiles of longissimus dorsi muscle were measured using Affymetrix Genechip.Results: Results showed that 264 genes were identified as differentially expressed genes(DEGs). The strongest transcriptional response was clearly observed at 30 d. DEGs were assigned to several main functional terms,including transcription, apoptosis, intracellular receptor-mediated signaling, muscle organ development, fatty acid metabolic process, cell motion, regulation of glucose metabolic process, spermatogenesis and regulation of myeloid cell differentiation. We also found that transcriptional changs of several transcription cofactors might contribute to n-3 PUFAs regulated gene expression. In addition, the increased expression of IGF-1, insulin signaling pathway and the metabolism of amino acids might involve in the muscle growth induced by feeding a linseedenriched diet. The results also provide the new evidence that the expression changes of PTPN1, HK2 and PGC-1αmight contribute to the regulation of insulin sensitivity by n-3 PUFAs.Conclusions: Our finding provided correlative evidence that feeding the linseed enriched diet affact expression of genes involved in insulin signaling pathway and the metabolism of amino acids.Hongkui Wei Yuanfei Zhou Shuzhong Jiang Feiruo Huang Jian Peng Siwen Jiang 2016Journal of Animal Science and Biotechnology2016,7,2:2
19An Improved DV-Hop Localization Algorithm Based on Selected Anchors显示文摘Wireless Sensor Network(WSN)based applications has been extraordinarily helpful in monitoring interested area.Only information of surrounding environment with meaningful geometric information is useful.How to design the localization algorithm that can effectively extract unknown node position has been a challenge in WSN.Among all localization technologies,the Distance Vector-Hop(DV-Hop)algorithm has been most popular because it simply utilizes the hop counts as connectivity measurements.This paper proposes an improved DV-Hop based algorithm,a centroid DV-hop localization with selected anchors and inverse distance weighting schemes(SIC-DV-Hop).We adopt an inverse distance weighting method for average distance amelioration to improve accuracy.Also in this paper,we propose an inclusive checking rule to select proper anchors to avoid the inconsistency existing in centroid localization schemes.Finally,an improved multilateration centroid method is presented for the localization.Simulations are conducted on two different network topologies and experiments results show that compared with existing DV-Hop based algorithms,our algorithm can significantly improve the performance meanwhile cost less network resource.Jing Wang Anqi Hou Yuanfei Tu Hong Yu 2020Computers, Materials & Continua2020,,10:2
20Multi-antenna synchronized global navigation satellite system receiver and its advantages in high-precision positioning applications显示文摘Danan DONG Wen CHEN Miaomiao CAI Feng ZHOU Minghua WANG Chao YU Zhengqi ZHENG Yuanfei WANG 2016Frontiers of Earth Science2016,10,4:2
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