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| 1 | 分布式发电的环境效益分析显示文摘分布式发电的兴起,是地球环境可持续发展政策与技术进步的产物。当前,分布式发电已经成为电力系统中一个新的研究热点;然而,在现行电力监管体制下,政策的制订者和执行者很难认识到分布式发电的价值,特别是对分布式发电的环境效益认识不够,从而使得分布式发电所带来的环境效益至今没有得到价值体现。针对这种情况,文中认为其主要的原因是目前没有将分布式发电的环境效益定量化。基于此,提出了将分布式发电环境效益定量化的指标,以此作为分析分布式发电环境效益的依据;同时,在此基础上建立了考虑环境效益的电量成本计算新模型,该模型将对污染物的排放实行罚款。计算结果表明,新的模型能定量化地反映分布式发电的环境效益,从而为分布式发电的进一步推广提供参考。 | 钱科军 袁越 石晓丹 ZHOU Chengke 鞠平 | 2008 | 中国电机工程学报2008，28，29： | 273 |
| 2 | The P-wave velocity structure of the lithosphere of the North China Craton——Results from the Wendeng-Alxa Left Banner deep seismic sounding profile显示文摘For the first time on the Chinese mainland, long-range wide-angle seismic reflection/refraction profiling technology has been applied to seismic wave phases from different depths and with different attributes within the various blocks of the North China Craton to characterize the structure of the crust and upper mantle lithosphere. By comparative analysis of the seismic wave phase characteristics in each block across a 1500-km-long east-west profile, we have identified conventional Pg, Pci, PmP and Pn phases in the crust, made a clear contrast between PL1 and PL2 waves belonging to two groups of lithospheric-scale phases, and produced a model of crust-mantle velocity structures and tectonic characteristics after one- and two-dimensional calculations and processing. The results show that the thickness of the crust and lithosphere gradually deepens from east to west along the profile. However, at the reflection/refraction interface, seismic waves in each group show obvious localized changes in each block. Also, the depth to the crystalline basement changes greatly, from as much as 7.8 km in the North China fault basin to only about 2 km beneath the Jiaodong Peninsula and Taihang-Lüliang area. The Moho morphology as a whole ranges from shallow in the east to deep in the west, with the deepest point in the Ordos Block at 47 km; in contrast, the North China Plain Block is uplifting. The L1 interface of the lithosphere is observed only to the west of Taihang Mountains, at a relatively slowly changing depth of about 80 km. The L2 interface varies from 75 to 160 km and shows a sharp deepening to the west of Taihang Mountains, forming a mutation belt. | WANG ShuaiJun WANG FuYun ZHANG JianShi JIA ShiXu ZHANG ChengKe ZHAO JinRen LIU BaoFeng | 2014 | Science China Earth Sciences2014，57，9： | 26 |
| 3 | 2-D P-wave velocity structure of lithosphere in the North China tectonic zone: Constraints from the Yancheng-Baotou deep seismic profile显示文摘We obtained the 2-D P-wave velocity structure of the lithosphere in the eastern North China Craton, Shanxi fault subsidence zone, and Yinchuan-Hetao fault subsidence zone by ray tracking technology based on six groups of clearly identified crustal phases and one group of lithospheric interface reflection phases from seismic recording sections of 21 shots along the 1300-km-long Yancheng-Baotou deep seismic wide-angle reflection/refraction profile. The results indicate significant differences between the lithospheric structure east and west of the Taihang Mountains, which is a gravity-gradient zone as well as a zone of abrupt change in lithospheric thickness and a separation zone of different rock components. East of the Taihang Mountains, the Mesozoic and Cenozoic lithospheric structure of the North China Craton has undergone strong reformation and destruction, resulting in the lithosphere thickness decreasing to 70–80 km. The North China Basin has a very thick Cenozoic sedimentary cover and the deepest point of crystalline basement is about 7.0 km, with the crustal thickness decreasing to about 31.0 km. The crystalline basement of the Luxi uplift zone is relatively shallow with a depth of 1.0–2.0 km and crustal thickness of 33.0–35.0 km. The Subei Basin has a thicker Cenozoic sedimentary cover and the bottom of its crystalline basement is at about 5.0–6.0 km with a crustal thickness of 31.0–32.0 km. The Tanlu fault is a deep fracture which cuts the lithosphere with a significant velocity structure difference on either side of the fault. The Tanlu fault plays an important role in the lithospheric destruction in the eastern part of the North China Craton. West of the Taihang Mountains, the crustal thickness increases significantly. The crust thickness beneath the Shanxi fault depression zone is about 46 km, and there is a low-velocity structure with a velocity of less than 6.1 km s?? in the upper part of the middle crust. Combined with other geophysical study results, our data shows that the lithospheric destruction at the Shaanxi-Shanxi fault depression zone and the Yinchuan-Hetao rift surrounding the Ordos block is non-uniform. The lithosphere thickness is about 80–90 km in the Datong-Baotou area, 75–137 km at the Dingxiang-Shenmu region, and about 80–120 km in the Anyang-Yichuan area. The non-uniform lithospheric destruction may be related to the ancient tectonic zone surrounding the Ordos block. This zone experienced multi-period tectonic events in the long-term process of its tectonic evolution and was repeatedly transformed and weakened. The weakening level is related to the interactions with the Ordos block. The continental collision between the Cenozoic India and Eurasia plates and N-E thrusting by the Qinghai Tibet Plateau block is causing further reformation and reduction of the lithosphere. | DUAN YongHong LIU BaoJin ZHAO JinRen LIU BaoFeng ZHANG ChengKe PAN SuZhen LIN JiYan GUO WenBin | 2015 | Science China Earth Sciences2015，58，9： | 14 |
| 4 | Deep seismic sounding data reveal the crustal structures beneath Zoigê basin and its surrounding folded orogenic belts显示文摘Songpan-Garze massif is located at the turning position of tectonics from the nearly west-east direction to the nearly north-south direction in the northeastern margin of Tibetan Plateau,with Zoigê basin in the centre of the massif.In this paper,we build a crustal structure model of Zoigê basin and its surrounding folded orogenic belts using the deep seismic sounding data in this region.We also discuss structures and properties of the basement in Zoigê basin,tectonic relations between Zoigê upland basin and its surrounding folded orogenic belts,crustal deformation and thickening in the northeastern margin of Tibetan Plateau,and decoupling and relaxing processes in the crust.The results indicate that a special 'Mesozoic basement' is formed of Triassic rocks with high density (2.65-2.75 g/cm3) and high velocity (5.6 km/s) in Zoigê basin.Songpan-Garze tectonic massif was transformed into two types of tectonic units with different crustal structures,i.e.,relatively stable Zoigê upland basin and active folded orogenic belts around the basin,in the course of the crustal material of Tibetan Plateau flowing eastward and obstructed by surrounding stable blocks.The thickening of the crust in the northeastern margin of Tibetan Plateau mainly occurred in the mid and lower crust,and the structure characterized by low velocities and multiple reflectors obviously appears in the folded orogenic belts around Zoigê basin.It implies that the mid and lower crust underwent a strong tectonic deformation in the folded orogenic areas.The thickness of the crust is about 50 km in Zoigê basin and the folded orogenic belts at the both southern and northern sides of Zoigê basin.The 'Mountain root' cannot be identified.It is inferred that during the later orogenic period the eastwards flowing deep materials moved clockwise along the relatively relaxing southern side around the eastern tectonic knot under the obstructing of surrounding rigid massifs,and it resulted in the strong stretching action of the folded orogenic belts around Zoigê basin. | JIA ShiXu,ZHANG XianKang,ZHAO JinRen,WANG FuYun,ZHANG ChengKe,XU ZhaoFan,PAN JiShun,LIU Zhi,PAN SuZhen & SUN GuoWei Geophysical Exploration Center,China Earthquake Administration,Zhengzhou 450002,China | 2010 | Science China Earth Sciences2010，53，2： | 11 |
| 5 | Modeling habitat distribution of Cornus officinalis with Maxent modeling and fuzzy logics in China显示文摘Aims Predicting suitable habitat distribution is an effective way to protect rare or endangered medicinal plants.Cornus officinalis is a perennial tree growing in forest edge and its air-dried pericarp is one of the traditional Chinese medicines(TCM)with significant medicinal values.In recent years,C.officinalis has undergone severe degeneration of its natural habitat owing to growing market demands and unprecedented damage to the forests.Moreover,the degeneration of suitable habitat has threatened the supply of medicinal materials,and even led to the extinction of some engendered medicinal plant species.In this case,there is a great risk to introduce and cultivate medicinal plants if planners determine the suitable cultivation regions based on personal subjective experience alone.Therefore,predicting suitable potential habitat distribution of medicinal plants(e.g.C.officinalis)and revealing the environmental factors determining such distribution patterns are important to habitat conservation and environmental restoration.Methods In this article,we report the results of a study on the habitat distribution of C.officinalis using maximum entropy(Maxent)modeling and fuzzy logics together with loganin content and environmental variables.The localities of 106 C.officinalis in China were collected by our group and other researchers and used as occurrence data.The loganin content of 234 C.officinalis germplasm resources were tested by high-performance liquid chromatography(HPLC)and used as content data.79 environmental variables were selected and processed with multicollinearity test by using Pearson Correlation Coefficient(r)to determine a set of independent variables.The chosen variables were then processed in the fuzzy linear model according to the cell values(maximum,minimum)of localities with estimated loganin content.The SDMtoolbox was used to spatially rarefy occurrence data and prepare bias files.Furthermore,combined Maxent modeling and fuzzy logics were used to predict the suitable habitat of C.officinalis.The modeling result was validated using null-model method.Important Findings As a result,six environmental factors including tmin3,prec3,bio4,alt,bio12 and bio3 were determined as key influential factors that mostly affected both the habitat suitability and active ingredient of C.officinalis.The highly suitable regions of C.officinalis mainly distribute in a‘core distribution zone’of the east-central China.The statistically significant AUC value indicated that combined Maxent modeling and fuzzy logics could be used to predict the suitable habitat distribution of medicinal plants.Furthermore,our results confirm that ecological factors played critical roles in assessing suitable geographical regions as well as active ingredient of plants,highlighting the need for effective habitat rehabilitation and resource conservation. | Bo Cao Chengke Bai Linlin Zhang Guishuang Li Mingce Mao | 2016 | Journal of Plant Ecology2016，9，6： | 11 |
| 6 | OsSIDP366,a DUF1644 gene,positively regulates responses to drought and salt stresses in rice显示文摘Domain of unknown function 1644(DUF1644) is a Rhighly conserved amino acid sequence motif present only in plants. Analysis of expression data of the family of DUF1644-containing genes indicated that they may regulate responses to abiotic stress in rice. Here we present our discovery of the role of Os SIDP366, a member of the DUF1644 gene family, in response to drought and salinity stresses in rice. Transgenic rice plants overexpressing Os SIDP366 showed enhanced drought and salinity tolerance and reduced water loss as compared to that in the control, whereas plants with downregulated Os SIDP366 expression levels using RNA interference(RNAi) were more sensitive to salinity and drought treatments. The sensitivity to abscisic acid(ABA)treatment was not changed in Os SIDP366-overexpressing plants, and Os SIDP366 expression was not affected in ABAdeficient mutants. Subcellular localization analysis revealed that Os SIDP366 is presented in the cytoplasmic foci that colocalized with protein markers for both processing bodies(PBs) and stress granules(SGs) in rice protoplasts. Digital gene expression(DGE) profile analysis indicated that stress-related genes such as SNAC1, Os HAK5 and PRs were upregulated in Os SIDP366-overexpressing plants. These results suggest that Os SIDP366 may function as a regulator of the PBs/SGs and positively regulate salt and drought resistance in rice. | Chiming Guo Chengke Luo Lijia Guo Min Li Xiaoling Guo Yuxia Zhang Liangjiang Wang Liang Chen | 2016 | Journal of Integrative Plant Biology2016，58，5： | 10 |
| 7 | North China sub-craton lithospheric structure elucidated through coal mine blasting显示文摘We present a super-range seismic observation along the >1300-km-long profile passing through the Yinchuan basin and the Ordos block from the blasting point towards the southeast triggered by a large-(dynamite) scale coal blast in the Ningxia Hui Autonomous Region's Helan Mountain (yielded a profile). The seismic wave information from the uppermost mantle reflecting different depths was obtained by the China continental seismic survey. Pn refracted waves from the uppermost mantle were effectively traced up to 500 km and beyond. The stable dynamic and kinematic characteristics of the Pn wave-group indicate that the uppermost mantle below the Ordos block is a gently changing structure with a weak positive gradient. If Pm1, Pm2 waves are considered as the wave groups from the upper mantle, there may be distinct structural strata in the upper-mantle structures with average velocities of 7.70―7.80 km/s and 8.10―8.20 km/s, respectively. Based on the travel-time curve feature of Pm1, Pm2 waves, there may be a certain layer with a reverse velocity between the M1 and M2 interfaces. The depth range indicated by them is about 110―120 km and 200―220 km. These phenomena basically reflect the structural features of the upper-mantle lithosphere in this region. The information obtained may provide meaningful references for surveying North China craton lithospheric structures, as well as under-standing the shapes and structures of different spherical layers within the upper-mantle. | ZHAO JinRen ZHANG XianKang WANG FuYun ZHANG ChengKe ZHANG JianShi LIU BaoFeng PAN SuZhen | 2009 | Chinese Science Bulletin2009，54，4： | 7 |
| 8 | 一种电力电缆的随机电热退化模型(英文)显示文摘In this paper a methodology is proposed to model the stochastic electro-thermal degradation accumulation in cables.The cable life and the reliability are predicted by estimating the accumulated electro-thermal degradation during seasonal load cycles.The degradation is considered,in a novel approach,as stochastic in nature due to variations in the manufacturing process of insulation raw material and in operational and environmental conditions.The methodology is based on estimation of life by using combined electro-thermal life model,simulation of degradation accumulation process under electro-thermal stress in each season of the year based on Miner’s cumulative damage theory and reliability prediction from a probabilistic point of view.A case study is demonstrated on 10 k V XLPE cables which are directly buried in the UK and China.Results show that,the electro-thermal life of the cable is 56 and 69 years in China and the UK,respectively at 50%failure probability,or the life of the cable in the UK would be 13 years longer than in China,when other stresses such as mechanical and environmental are also considered and assumed to be the same. | Swati Sachan Rui Wen Yong Xiang Leiming Yao Chengke Zhou | 2015 | 高电压技术2015，41，4： | 6 |
| 9 | Baicalin and rutin are major constituents in Shuanghuanglian injection involving anaphylactoid reaction显示文摘OBJECTIVE: To identify the constituents in Shuanghuanglian injection(SHLI) that correlate with anaphylactoid reaction.METHODS: Chemical fingerprints of 10 batches SHLI samples were determined by High Performance Liquid Chromatography(HPLC), and further investigated by similarity analysis. Combined with optical microscopy, both anaphylactoid experiments and confirmatory assay were displayed in Rat basophil leukemia cells(RBL-2H3) to obtain the histamine release inducing by SHLI. The content of histamine was tested by Enzyme-Linked Immuno Sorbent As-say method. Partial least squares regression(PLSR)method and HPLC-DAD-ESI-MSntechnology were conducted to analyze constituents in SHLI involving anaphylactoid reaction.RESULTS: The results of spectrum and effect relationships showed that the eight constituents were positively correlated with anaphylactoid reaction.Among which, nearly 90% of them were identified as baicalin and rutin with PLSR and HPLC-DAD-ESI-MSn. This result was in accordance with confirmatory assay on RBL-2H3 cells.CONCLUSION: Baicalin and rutin from SHLI were the main constituents involving anaphylactoid reaction. | Zhang Qi Cai Chengke Li Jian Wang Penglong Si Yinchu Ding Nan Gao Jing Zhang Yanqiu Ma Zhiqiang Lei Haimin Li Qiang | 2017 | Journal of Traditional Chinese Medicine2017，37，3： | 6 |
| 10 | A network coding based hybrid ARQ algorithm for wireless video broadcast显示文摘This paper proposes a network coding (NC) based hybrid ARQ (HARQ) algorithm for video broad- cast over wireless networks. The sender applies NC technique to combine the lost packets of different terminals, so that multiple terminals can recover their lost packets via per transmission from the sender. The proposed algorithm combines the advantage of FEC scheme and NC based ARQ scheme so as to maximize not only wireless throughput but also video quality for broadcast communication. Simulation results show that our algorithm significantly improves both wireless throughput efficiency and video quality, compared with ARQ and HARQ schemes. | LU Ji WU ChengKe XIAO Song & DU JianChao | 2011 | Science China(Information Sciences)2011，54，6： | 4 |
| 11 | Review of recent research towards power cable life cycle management显示文摘Power cables are integral to modern urban power transmission and distribution systems.For power cable asset managers worldwide,a major challenge is how to manage effectively the expensive and vast network of cables,many of which are approaching,or have past,their design life.This study provides an in-depth review of recent research and development in cable failure analysis,condition monitoring and diagnosis,life assessment methods,fault location,and optimisation of maintenance and replacement strategies.These topics are essential to cable life cycle management(LCM),which aims to maximise the operational value of cable assets and is now being implemented in many power utility companies.The review expands on material presented at the 2015 JiCable conference and incorporates other recent publications.The review concludes that the full potential of cable condition monitoring,condition and life assessment has not fully realised.It is proposed that a combination of physics-based life modelling and statistical approaches,giving consideration to practical condition monitoring results and insulation response to in-service stress factors and short term stresses,such as water ingress,mechanical damage and imperfections left from manufacturing and installation processes,will be key to success in improved LCM of the vast amount of cable assets around the world. | Chengke Zhou Huajie Yi Xiang Dong | 2017 | High Voltage2017，2，3： | 4 |
| 12 | Packet routing algorithm for polar orbit LEO satellite constellation network显示文摘Broadband satellite networks are capable of providing global coverage and support various services. The networks constructed by Low Earth Orbit (LEO) satellite constellations have attracted great interests because of their short round-trip delays and wide bandwidths. A challenging problem is to develop a simple and efficient packet routing algorithm for the LEO satellite constellation network. This paper presents a SpiderWeb Topological Network (SWTN) and a distributed packet routing algorithm for the LEO satel-lite constellation network based on the SWTN. The algorithm gives the minimum propa-gation delay paths with low computational complexity and requires no routing tables, which is practical for on-board processing. The performance of the algorithm is demon-strated through simulations. | WANG Kaidong YI Kechu TIAN Bin WU Chengke | 2006 | Science in China(Series F)2006，49，1： | 3 |
| 13 | Exploration and Research of Deep Crustal Structures in the Zhangzhou Basin and Its Vicinity显示文摘The Zhangzhou basin is located at the middle section of the southeast coast seismic zone of the mainland of China. Using high-resolution refraction and wide-angle reflection/refraction seismic profiling of Zhangzhou basin and its vicinity, we have obtained the crustal geometric structure and velocity structure as well as the geometric configuration and structural relationship between the deep and shallow fractures.The results show that the crust in the region is divided into the upper crust and lower crust. The thickness of the upper crust is 16.5km~18.8km, and that of the lower crust is 12.0km~13.0km. The upper crust is further divided into an upper and lower section. In the lower section of the upper crust, there is a low-velocity layer with a velocity of about 6.00km/s; the depth of the top surface of the low-velocity layer is about 12.0km, and the thickness is about 5.0km. The lower crust is also divided into an upper and lower section. The depth of Moho is 29.0km~31.8km. There are 6 normal faults in the shallow crust in this region, and most of them extend downwards to a depth of less than 4km, the maximum depth is about 5km.Below the shallow normal faults, there is a conjectural high-dip angle deep fault zone. The fault zone extends downwards till the Moho and upwards into the low-velocity layer in lower section of the upper crust. The deep and shallow faults are not tectonically connected. The combination character of deep and shallow structures in the Zhangzhou basin indicates that the Jiulongjiang fault zone is a deep fault zone with distinct characteristics and a complex deep and shallow structure background. The acquisition of deep seismic exploration results obviously enhanced the reliability of explanation of deep-structural data and the exploration precision of the region. The combination of deep and shallow structures resulted in uniform explanation results. The delamination of the crust and the characteristic of the structures are more precise and explicit. We discovered for the first time the combination characteristics of extensional structures and listric faults in the upper crust. This is not only helpful to the integrative judgment of earthquake risk in Zhangzhou and its vicinity, but also of importance for deepening the knowledge of deep dynamic processes in the southeast coast seismic zone. | Zhu Jinfang Fang Shengming Zhang Xiankang Qu Guosheng Huang Zonglin Zhang Chengke Zhao Jinren | 2006 | Earthquake Research in China2006，20，4： | 2 |
| 14 | Infnite time horizon nonzero-sum linear quadratic stochastic differential games with state and control-dependent noise显示文摘This paper discusses the infnite time horizon nonzero-sum linear quadratic(LQ)differential games of stochastic systems governed by Ito’s equation with state and control-dependent noise.First,the nonzero-sum LQ differential games are formulated by applying the results of stochastic LQ problems.Second,under the assumption of mean-square stabilizability of stochastic systems,necessary and suffcient conditions for the existence of the Nash strategy are presented by means of four coupled stochastic algebraic Riccati equations.Moreover,in order to demonstrate the usefulness of the obtained results,the stochastic H-two/H-infnity control with state,control and external disturbance-dependent noise is discussed as an immediate application. | Huainian ZHU Chengke ZHANG | 2013 | 控制理论与应用(英文版)2013，11，4： | 2 |
| 15 | A New Network Coding Design for Reliable Video Multicast显示文摘 | XIAO Song WANG Hui WU Chengke | 2011 | Chinese Journal of Electronics2011，20，2： | 2 |
| 16 | Double Magnetic Separation-assisted Fluorescence Method for Sensitive Detection of Ochratoxin A显示文摘A double magnetic separation-assisted fluorescence method was developed to rapidly detect ochratoxin A(OTA). The OTA aptamer functionalized magnetic nanomaterial(Fe3O4-Aptanier) and complementary DNA conjugated nitrogen-doped graphene quantum dots(NGQDs-cDNA) were used in this assay. Aptamer could hybridize with cDNA, which induced tlie NGQDs-cDNA to bind onto Fe3O4-Aptamer, and resulted in the fluorescence quenching of NGQDs. After the addition of OTA, the NGQDs-cDNA could release into the solution, and resulted in the recovery of fluorescence signal of NGQDs consequently. By utilizing the magnetic separation, the unbonded NGQDs-cDNA and residual Fe3O4-Aptamer were removed, which significantly increased the fluorescence signal intensity. OTA could be detected in the linear range of 10 nmol/L to 2000 nmol/L, with a limit of detection as 0.66 mnol/L. The advantages of this method include simple operation, good selectivity and high sensitivity, and this method can be used for the rapid detection of ochratoxin A in wheat and com. | WANG Chengke TAN Rong LI Jiangyu ZHANG Zexiang | 2019 | Chemical Research in Chinese Universities2019，35，3： | 2 |
| 17 | A Bidirectional Local Search Algorithm for the Protection of Embedded Data over Packet Erasure Channel显示文摘 | YANG Yadong WU Chengke XIAO Song | 2005 | Chinese Journal of Electronics2005，14，4： | 2 |
| 18 | SARS epidemical forecast research in mathematical model显示文摘The SIJR model, simplified from the SEIJR model, is adopted to analyze the important parameters of the model of SARS epidemic such as the transmission rate, basic reproductive number. And some important parameters are obtained such as the transmission rate by applying this model to analyzing the situation in Hong Kong, Singapore and Canada at the outbreak of SARS. Then forecast of the transmission of SARS is drawn out here by the adjustment of parameters (such as quarantined rate) in the model. It is obvious that inflexion lies on the crunode of the graph, which indicates the big difference in transmission characteristics between the epidemic under control and not under control. This model can also be used in the comparison of the control effectiveness among different regions. The results from this model match well with the actual data in Hong Kong, Singa- pore and Canada and as a by-product, the index of the effec- tiveness of control in the later period can be acquired. It of- fers some quantitative indexes, which may help the further research in epidemic diseases. | DINGGuanghong LIUChang GONGJianqiu WANGLing CHENGKe ZHANGDi | 2004 | Chinese Science Bulletin2004，49，21： | 2 |
| 19 | A real time infrared scene simulator显示文摘 | Xiangdong Zhang Zhengwei Xu Chengke Wu | 1996 | International Journal of Infrared and Millimeter Waves1996，，11： | 1 |
| 20 | ENERGY DECAY ESTIMATES FOR AN EULER-BERNOULLI BEAM WITH A TIP MASS显示文摘In this paper,we study the energy decay estimates for an Euler-Bernoulli beam with a tip mass,which is clamped at one end and attached a tip mass to the free end. | Qingying Hu,Chengke Zhu (Dept. of Math.,Henan University of Technology,Zhengzhou 450001) Xiaozhong Zhang (College of Math. and Information Sci.,Henan Polytechnic University,Jiaozuo 454000,Henan) | 2009 | Annals of Differential Equations2009，25，2： | 1 |
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