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| 1 | Chemical composition of PM_(2.5) during winter in Tianjin,China显示文摘PM2.5 samples for 24 h were collected during winter in Tianjin,China. The ambient mass concentration and chemical composition of the PM2.5 were determined. Ionic species were analyzed by ion chromatog-raphy,while carbonaceous species were determined with the IMPROVE thermal optical reectance(TOR) method,and inorganic elements were measured by inductively coupled plasma-atomic emission spec-trometer. The daily PM2.5 mass concentrations ranged from 48.2 to 319.2 g/m3 with an arithmetic average of 144.6 g/m3. The elevated PM2.5 in winter was mostly attributed to combustion sources such as vehicle exhaust,heating,cooking and industrial emissions,low wind speeds and high relative humidity(RH) ,which were favorable for pollutant accumulation and formation of secondary pollutants. By chem-ical mass balance,it was estimated that about 89.1% of the PM2.5 mass concentrations were explained by carbonaceous species,secondary particles,crustal matters,sea salt and trace elements. Organic material was the largest contributor,accounting for about 32.7% of the total PM2.5 mass concentrations. SO42-,NO3-,Cl- and NH4+ were four major ions,accounting for 16.6%,11.5%,4.7% and 6.0%,respectively,of the total mass of PM2.5. | Jinxia Gu Zhipeng Bai Weifang Li Liping Wu Aixia Liu Haiyan Dong Yiyang Xie | 2011 | Particuology2011，9，3： | 60 |
| 2 | Cold-chain transportation in the frozen food industry may have caused a recurrence of COVID-19 cases in destination:Successful isolation of SARS-CoV-2 virus from the imported frozen cod package surface显示文摘Coronavirus disease 2019(COVID-19)pandemic has spread in 220 countries/regions towreak havoc to human beings around theworld.At present,the second wave of COVID-19 has begun in many European countries.The complete control of COVID-19 is very urgent.Although China quickly brought the virus under control,there have been eight sporadic outbreaks in China since then.Both in Xinfadi of Beijing and Dalian outbreak of COVID-19,environmental swab samples related to imported cold chain food were tested nucleic acid positive for SARS-CoV-2.In this outbreak in Qingdao,we directly isolated SARS-CoV-2 from the cod outer package's surface swab samples.This is the first time worldwide,SARS-CoV-2 were isolated from the imported frozen cod outer package's surface,which showed that imported frozen food industry could import SARS-CoV-2 virus. | Peipei Liu Mengjie Yang Xiang Zhao Yuanyuan Guo Liang Wang Jing Zhang Wenwen Lei Weifang Han Fachun Jiang William J.Liu George F.Gao Guizhen Wu | 2020 | Biosafety and Health2020，2，4： | 41 |
| 3 | Characteristics of organic and elemental carbon in atmospheric fine particles in Tianjin,China显示文摘PM2.5 samples were collected at urban, industrial and coastal sites in Tianjin during winter, spring and summer in 2007. Concentrations of elemental carbon (EC) and organic carbon (OC) were analyzed using the IMPROVE thermal-optical reflectance (TOR) method. Both OC and EC exhibited a clear seasonal pattern with higher concentrations observed in the winter than in the spring and summer, due to cooperative effect of changes in emission rates and seasonal meteorology. The concentrations of carbonaceous species were also influenced by the local factors at different sampling sites, ranking in the order of industrial > urban > coastal during winter and spring. In the summer, the port emissions, enriched with EC, had a significant impact on carbonaceous aerosols at the coastal site. Total carbonaceous aerosol accounted for 40.0% in winter, 33.8% in spring and 31.4% in summer of PM2.5 mass. Good correlation (R = 0.84-0.93) between OC and EC indicated that they had common dominant sources of combustion such as coal burning and traffic emissions. The daily average OC/EC ratios ranged from 2.1 to 9.1, the elevated OC/EC ratios being found in the winter. The estimated secondary organic carbon (SOC) accounted for 46.9%, 35.3% and 40.2% of the total OC in the winter, spring and summer, respectively, indicating that SOC may be an important contributor to fine organic aerosol in Tianjin. | Weifang Li Zhipeng Bai | 2009 | Particuology2009，7，6： | 35 |
| 4 | Boundary-layer transition prediction using a simplified correlation-based model显示文摘This paper describes a simplified transition model based on the recently developed correlation-based c Rehttransition model. The transport equation of transition momentum thickness Reynolds number is eliminated for simplicity, and new transition length function and critical Reynolds number correlation are proposed. The new model is implemented into an in-house computational fluid dynamics(CFD) code and validated for low and high-speed flow cases, including the zero pressure flat plate, airfoils, hypersonic flat plate and double wedge. Comparisons between the simulation results and experimental data show that the boundary-layer transition phenomena can be reasonably illustrated by the new model, which gives rise to significant improvements over the fully laminar and fully turbulent results. Moreover, the new model has comparable features of accuracy and applicability when compared with the original c Rehtmodel. In the meantime, the newly proposed model takes only one transport equation of intermittency factor and requires fewer correlations, which simplifies the original model greatly. Further studies, especially on separationinduced transition flows, are required for the improvement of the new model. | Xia Chenchao Chen Weifang | 2016 | Chinese Journal of Aeronautics2016，29，1： | 10 |
| 5 | Rational design of nitrogen doped hierarchical porous carbon for optimized zinc-ion hybrid supercapacitors显示文摘Aqueous rechargeable zinc-ion hybrid supercapacitors are considered to be a promising candidate for large-scale energy storage devices owing to their high safety,long life,and low price.In this paper,a nitrogen doped hierarchical porous carbon is evaluated as the cathode for aqueous rechargeable zinc-ion hybrid supercapacitors.Benefiting from the synergistic merits of excellent structural features of N-HPC and tiny zinc dendrite of Zn anode in ZnSO4 electrolyte,the zinc-ion hybrid supercapacitor exhibits excellent energy storage performance including high capacity of 136.8 mAh·g^−1 at 0.1·Ag^−1,high energy density of 191 Wh·kg^−1,large power density of 3,633.4 W·kg^−1,and satisfactory cycling stability of up to 5,000 cycles with a capacity retention of 90.9%.This work presents a new prospect of developing high-performance aqueous rechargeable zinc ion energy storage devices. | Penggao Liu Yang Gao Yangyang Tan Weifang Liu Yanping Huang Jun Yan Kaiyu Liu | 2019 | Nano Research2019，12，11： | 10 |
| 6 | Recent developments of large diameter X80 UOE line pipes显示文摘High-strength pipeline steel and large diameter line pipes are often used to increase the capacity of transportation and reduce the cost associated with the construction and operation of long-distance gas pipeline projects. China's initiatives to construct long-distance natural gas pipelines has brought in new opportunities for the development of X80 line pipes. Baosteel has designed the optimum chemical composition of X80 with high niobium and low molybdenum content. In addition,a welding experimental platform and a finite element model(FEM) have supported the development of X80 UOE pipes in an efficient and economical way. The application and recent development of X80 UOE pipes were introduced in this paper. To comply with the requirements of the Second West-East Gas Pipeline Project(2ndWEPP),X80 pipeline steel with low carbon bainite microstructure was developed by utilizing the optimized composition and TMCP process. The matching welding material,welding procedure and UOE forming processes for 1219mm outside diameter X80 UOE pipes were also developed. More than 340000 t of X80 UOE pipes were produced and applied in the 2ndWEPP. Furthermore,to meet the prospective demand for long-distance gas pipelines with an annual transportation capacity of over 40 billion m3,larger size X80UOE pipes with 1 422 mm OD × 30. 8 mm WT were trial produced recently. DWTT performance,the main technical challenge for heavier wall pipes,was improved by using optimized microstructural design. The newly developed X80 pipes can be potentially used for larger transportation capacity pipelines in China. | ZHANG Chuanguo ZHENG Lei XIE Shiqiang ZHANG Bei HAN Jianzeng QIAN Weifang | 2014 | Baosteel Technical Research2014，8，2： | 9 |
| 7 | Increased activity of MdFRK2, a high-affinity fructokinase, leads to upregulation of sorbitol metabolism and downregulation of sucrose metabolism in apple leaves显示文摘To investigate the functions of fructokinase(FRK)in apple(Malus domestica)carbohydrate metabolism,we cloned the coding sequences of MdFRK1 and MdFRK2 from the‘Royal Gala’apple.The results showed that MdFRK2 expression was extremely high in shoot tips and young fruit.Analyses of heterologously expressed proteins revealed that MdFRK2 had a higher affinity for fructose than did MdFRK1,with Km values of 0.1 and 0.62 mM for MdFRK2 and MdFRK1,respectively.The two proteins,however,exhibited similar Vmax values when their activities were significantly inhibited by high concentrations of fructose.MdFRK2 ectopic expression was associated with a general decrease in fructose concentration in transgenic lines.In leaves,increased FRK activity similarly resulted in reduced concentrations of glucose and sucrose but no alterations in sorbitol concentration.When compared with those in the untransformed control,genes involved in sorbitol synthesis(A6PR)and the degradation pathway(SDH1/2)were significantly upregulated in transgenic lines,whereas those involved in sucrose synthesis(SPS1)and other degradation processes(SUSY4,NINV1/2,and HxK2)were downregulated.The activity of enzymes participating in carbohydrate metabolism was proportional to the level of gene expression.However,the growth performance and photosynthetic efficiency did not differ between the transgenic and wild-type plants.These results provide new genetic evidence to support the view that FRK plays roles in regulating sugar and sorbitol metabolism in Rosaceae plants. | Jingjing Yang Lingcheng Zhu Weifang Cui Chen Zhang Dongxia Li Baiquan Ma Lailiang Cheng Yong-Ling Ruan Fengwang Ma Mingjun Li | 2018 | Horticulture Research2018，5，1： | 9 |
| 8 | Distributions and sources of n-alkanes in PM_(2.5) at urban,industrial and coastal sites in Tianjin,China显示文摘Aliphatic hydrocarbons(n-alkanes) associated with fine particulate matter were determined in the ambient air of urban,industrial and coastal areas in Tianjin,China,where intensive coal burning for industrial and domestic purpose takes place.n-Alkane homologues from C12 to C35 were quantifiable in all samples with C20-C31 being the most abundant species.Average concentrations of the total n-alkanes were 148.7,250.1 and 842.0 ng/m3 in July,April and January,respectively.Seasonal variations were mainly attributed to ambient temperature changes and coal combustion for residential heating.Among the three studied areas,the highest levels of n-alkanes were observed in the industrial complex in winter and spring,but in summer the coastal alkane concentration moved up to the highest. A mono-modal distribution for n-alkanes was observed in spring and summer with odd carbon number predominance and a maximum centered at C27-C31,suggesting the release of plant wax into the atmosphere.The bimodal distribution with maxima at C22 and C26 observed in winter indicated a substantial influence of fossil fuel sources.All the CPIs(CPI1,CPI2,CPI3) values,varying between 0.64 and 1.97,indicated the influence of anthropogenic emissions on fine organic aerosols.The estimated contributions of plant wax to total n-alkanes were on average of 12.9%,19.1%and 26.1%for winter,spring and summer,respectively. | Weifang Li Yue Peng Zhipeng Bai | 2010 | Journal of Environmental Sciences2010，22，10： | 8 |
| 9 | NONLINEAR DYNAMIC ANALYSIS OF FLEXIBLE MULTIBODY SYSTEM显示文摘The nonlinear dynamic equations of a multibody system composed of ?exible beams are derived by using the Lagrange multiplier method. The nonlinear Euler beam theory with inclusion of axial deformation e?ect is employed and its deformation ?eld is described by exact vibration modes. A numerical procedure for solving the dynamic equations is presented based on the Newmark direct integration method combined with Newton-Raphson iterative method. The results of numerical examples prove the correctness and e?ciency of the method proposed. | AYTLeung Wu Guorong Zhong Weifang | 2004 | Acta Mechanica Solida Sinica2004，17，4： | 7 |
| 10 | A mimotope of Pre-S_2 region of surface antigen of viral hepatitis B screened by phage display显示文摘To acquire the phage-displayed mimotopes which mimic the specificity of hepatitis B virus surface antigen (HBsAg), a random peptide library expressing linear peptide with 12 amino asids in length were used to screen with the serum from a hepatitis B virus infected patient in the recovery phase. After 3 rounds of biopanning, the positive phages were confirmed by competitive ELISA using HBsAg/P33. Two phagotopes were identified and one of them was confirmed as mimotope by competition experiment. Based on the mimotpe, a multiple antigenic peptide with four branches was synthesized by solid phase peptide synthesis. The antiginicity and specificity of the synthesized antigen was tested in BALB/c mice compared with the native epitope-based antigen. The results showed that the mimotope-based antigen could evoke higher titer of antibodies with the same specificity of the epitope-based antigen. Those findings indicate mimotopes can be used in antigen and vaccine design. | WU YU ZHANG, YING WAN, DAO GUO LI, YAN TANG, WEI ZHOU Institute of Immunology, PLA, The Third Medical University, Chongqing 400038, China Medical Center, General Hospital of Weifang, Weifang 26100, China | 2001 | Cell Research2001，11，3： | 7 |
| 11 | Failure Analysis of Aviation Torsional Springs显示文摘裂缝和破裂发生在汇编进程期间到在航空机制使用的扭力的弹簧的一种类型。除视觉检查以外,另外的试验性的技术使用了因为调查:1 ) 由扫描电子显微镜学(SEM ) 的破裂特征,损坏形态学和金属断面的显微镜观察, 2 ) 盖住的光谱分析, 3 ) 裂缝的 metallographic 观察并且 4 ) 氢内容测试。结果通过制造过程和试验性的数据的分析被获得。因为微观结构的变化都没被发现,失败与材料无关。裂缝和破裂在内部表面上开始,裂缝在镉 plating 前并且在弯屈以后开始。没有明显的压力腐蚀裂缝在裂缝来源区域附近被发现。裂缝的开的方向与剩余一致春天的张力的应力内部表面,和弹簧是容易的联系在弯屈的春天和镉 plating 之间的氢媒介。裂缝被引起由导致氢在剩余的行动下面裂开推迟张力的应力和氢。 | HOU Weiguo ZHANG Weifang LIU Xiao WANG Zongren DING Meili | 2011 | Chinese Journal of Aeronautics2011，24，4： | 7 |
| 12 | Triglycerides and ratio of triglycerides to high-density lipoprotein cholesterol are better than liver enzymes to identify insulin resistance in urban middle-aged and older non-obese Chinese without diabetes显示文摘 | Sun Yu Li Wenjuan Hou Xinguo Wang Chuan Li Chengqiao Zhang Xiuping Yang Weifang Ma Zeqiang Wang Weiqing Ning Guang Zheng Huizhen Ma Aixia Song Jun Lin Peng Liang Kai Liu Fuqiang Gong Lei Wang Meijian Xiao Juan Yan Fei Yang Junpeng Wang Lingshu Tian Meng Liu Jidong Zhao Ruxing Zhu Ping Chen Li | 2014 | Chinese Medical Journal2014，，10： | 7 |
| 13 | Incorporating the magnetic alignment of GO composites into Pebax matrix for gas separation显示文摘The mixed matrix membranes(MMMs) were developed by incorporating graphite oxide(GO) flakes functionalized with iron oxide(Fe_3O_4) into Pebax matrix. The Pebax/Fe_3O_4–GO MMMs were used to separate CO_2/CH_4 and CO_2/N_2 gas mixture. The results showed that the MMMs with magnetic alignment presented the better gas separation performance than that of random arrangement of Pebax/Fe_3O_4–GO mixed matrix membranes. The reason was that the Fe_3O_4–GO flakes arranged magnetically in the membrane played a multiple role in improving the performance of MMMs. Firstly, under the action of the magnetic field,the magnetic alignment of Fe_3O_4–GO flakes in Pebax matrix constructed the shorter transfer path for gas molecule, increasing the CO_2 permeability. Secondly, the hydroxyl groups in GO flakes and the presence of Fe_3O_4 have stronger binding force for water, improving the CO_2 solubility selectivity. Thirdly, the better interaction between the magnetic alignment of GO composites and polymer matrix, reduced the interface defects. Especially, the optimum gas separation performance was obtained at the Fe_3O_4–GO flakes content of 3 wt% in Pebax matrix at vertical arrangement with selectivity of 47 and 75 for CO_2/CH_4 and CO_2/N_2, respectively, and CO_2 permeability of 538 Barrer at 0.2 MPa and room temperature. | Weifang Zhu Yun Qin Zhongming Wang Jianshu Zhang Ruili Guo Xueqin Li | 2019 | Journal of Energy Chemistry2019，28，4： | 5 |
| 14 | A Tracing Algorithm of Thevenin Equivalent Parameters for Power Systems With Large Disturbance显示文摘 | SUN huadong CHEN Shuyong CHANG Xiaopeng LIN Weifang | 2012 | 中国电机工程学报2012，32，22： | 5 |
| 15 | Optimal Design and Force Control of a Nine-Cable-Driven Parallel Mechanism for Lunar Takeoff Simulation显示文摘Traditional simulation methods are unable to meet the requirements of lunar takeo simulations, such as high force output precision, low cost, and repeated use. Considering that cable-driven parallel mechanisms have the advantages of high payload to weight ratio, potentially large workspace, and high-speed motion, these mechanisms have the potential to be used for lunar takeo simulations. Thus, this paper presents a parallel mechanism driven by nine cables. The purpose of this study is to optimize the dimensions of the cable-driven parallel mechanism to meet dynamic workspace requirements under cable tension constraints. The dynamic workspace requirements are derived from the kinematical function requests of the lunar takeo simulation equipment. Experimental design and response surface methods are adopted for building the surrogate mathematical model linking the optimal variables and the optimization indices. A set of dimensional parameters are determined by analyzing the surrogate mathematical model. The volume of the dynamic workspace increased by 46% after optimization. Besides, a force control method is proposed for calculating output vector and sinusoidal forces. A force control loop is introduced into the traditional position control loop to adjust the cable force precisely, while controlling the cable length. The e ectiveness of the proposed control method is verified through experiments. A 5% vector output accuracy and 12 Hz undulation force output can be realized. This paper proposes a cable-driven parallel mechanism which can be used for lunar takeo simulation. | Wangmin Yi Yu Zheng Weifang Wang XiaoqiangTang Xinjun Liu Fanwei Meng | 2019 | Chinese Journal of Mechanical Engineering2019，32，4： | 5 |
| 16 | Effects of surface waves and sea spray on air–sea fluxes during the passage of Typhoon Hagupit显示文摘Air–sea exchange plays a vital role in the development and maintenance of tropical cyclones(TCs). Although studies have suggested the dependence of air–sea fluxes on surface waves and sea spray, how these processes modify those fluxes under TC conditions have not been sufficiently investigated based on in-situ observations.Using continuous meteorological and surface wave data from a moored buoy in the northern South China Sea,this study examines the effects of surface waves and sea spray on air–sea fluxes during the passage of Typhoon Hagupit. The mooring was within about 40 km of the center of Hagupit. Surface waves could increase momentum flux to the ocean by about 15%, and sea spray enhanced both sensible and latent heat fluxes to the atmosphere,causing Hagupit to absorb 500 W/m^2 more heat flux from the ocean. These results have powerful implications for understanding TC–ocean interaction and improving TC intensity forecasting. | HE Hailun WU Qiaoyan CHEN Dake SUN Jia LIANG Chujin JIN Weifang XU Yao | 2018 | Acta Oceanologica Sinica2018，37，5： | 5 |
| 17 | Use of portable X-ray fluorescence in the analysis of surficial sediments in the exploration of hydrothermal vents on the Southwest Indian Ridge显示文摘Hydrothermal plumes released from the eruption of sea floor hydrothermal fluids contain large amounts of oreforming materials. They precipitate within certain distances from the hydrothermal vent. Six surficial sediment samples from the Southwest Indian Ridge(SWIR) were analyzed by a portable X-ray fluorescence(PXRF) analyzer on board to find a favorable method fast and efficient enough for sea floor sulfide sediment geochemical exploration. These sediments were sampled near, at a moderate distance from, or far away from hydrothermal vents. The results demonstrate that the PXRF is effective in determining the enrichment characteristics of the oreforming elements in the calcareous sediments from the mid-ocean ridge. Sediment samples(>40 mesh) have high levels of elemental copper, zinc, iron, and manganese, and levels of these elements in sediments finer than 40 mesh are lower and relatively stable. This may be due to relatively high levels of basalt debris/glass in the coarse sediments, which are consistent with the results obtained by microscopic observation. The results also show clear zoning of elements copper, zinc, arsenic, iron, and manganese in the surficial sediments around the hydrothermal vent. Sediments near the vent show relatively high content of the ore-forming elements and either high ratios of copper to iron content and zinc to iron content or high ratios of copper to manganese content and zinc to manganese content. These findings show that the content of the ore-forming elements in the sediments around hydrothermal vents are mainly influenced by the distance of sediments to the vent, rather than grain size. In this way, the PXRF analysis of surface sediment geochemistry is found to satisfy the requirements of recognition geochemical anomaly in mid-ocean ridge sediments. Sediments with diameters finer than 40 mesh should be used as analytical samples in the geochemical exploration for hydrothermal vents on mid-oceanic ridges. The results concerning copper, zinc, arsenic, iron, and manganese and their ratio features can be used as indicators in sediment geochemical exploration of seafloor sulfides. | LIAO Shili TAO Chunhui LI Huaiming ZHANG Guoyin LIANG Jin YANG Weifang | 2017 | Acta Oceanologica Sinica2017，36，7： | 5 |
| 18 | 17α-Ethynylestradiol biodegradation in different river-based groundwater recharge modes with reclaimed water and degradation-associated community structure of bacteria and archaea显示文摘This study investigated 17α-ethynylestradiol(EE2) biodegradation process and primary metabolic pathways associated with community structures of microorganism during groundwater recharge using reclaimed water. The attenuation rate is 1.58 times higher in wetting and drying alternative recharge(WDAR) than in continual recharge(CR). The primary biotransformation pathways of EE2 in WDAR system began with the oxidation of C-17 on ring D to form a ketone group, and D-ring was subsequently hydroxylated and cleaved. In the CR system, the metabolic pathway changed from the oxidation of C-17 on ring D to hydroxylation of C-4 on ring A, and ring A or B subsequently cleaved; this transition was related to DO, and the microbial community structure. Four hundred fifty four pyrosequencing of 16 s r RNA genes indicated that the bacterial communities in the upper layer of the WDAR system were more diverse than those found in the bottom layer of the CR system; this result was reversed for archaea. Unweighted Uni Frac and taxonomic analyses were conducted to relate the change in bacterial community structure to the metabolic pathway. Microorganism community diversity and structure were related to the concentrations of dissolved oxygen, EE2 and its intermediates in the system. Five known bacterial classes and one known archaeal class, five major bacterial genera and one major archaeal genus might be involved in EE2 degradation. The findings of this study provide an understanding of EE2 biodegradation in groundwater recharge areas under different recharging modes and can facilitate the prediction of the fate of EE2 in underground aquifers. | Weifang Ma Jiaji Sun Yangyao Li Xiaoxiu Lun Dan Shan Chao Nie Miaomiao Liu | 2018 | Journal of Environmental Sciences2018，30，2： | 5 |
| 19 | Arsenic(V)removal from groundwater by GE-HL nanofiltration membrane:effects of arsenic concentration,pH,and co-existing ions显示文摘A laboratory-scale investigation was performed to study arsenic(As(V))removal by negatively charged GE-HL nanofiltration(NF)membrane in simulated drinking water.Effects of As(V)concentration(0–200μg·L–1),pH,and co-ions and counter-ions were investigated.The NF membrane presented good stability,and the rejection rates exceeded 90%.The rejection rates of As(V)decreased with the increase of As(V)concentration,while it increased with the increase of pH(reached 96%at pH 6.75).Moreover,a negative relationship was observed between the co-existing ions of Cl^(–),Na^(+),SO_(4)^(2–),and Ca^(2+)and the removal of As(V),in which bivalent ions presented more significant effects than monovalent ions. | Xiaowei WANG Wenjun LIU Desheng LI Weifang MA | 2009 | Frontiers of Environmental Science & Engineering2009，3，4： | 5 |
| 20 | Formula for calculating spatial similarity degrees between point clouds on multi-scale maps taking map scale change as the only independent variable显示文摘The degree of spatial similarity plays an important role in map generalization, yet there has been no quantitative research into it. To fill this gap, this study first defines map scale change and spatial similarity degree/relation in multi-scale map spaces and then proposes a model for calculating the degree of spatial similarity between a point cloud at one scale and its generalized counterpart at another scale. After validation, the new model features 16 points with map scale change as the x coordinate and the degree of spatial similarity as the y coordinate.Finally, using an application for curve fitting, the model achieves an empirical formula that can calculate the degree of spatial similarity using map scale change as the sole independent variable, and vice versa. This formula can be used to automate algorithms for point feature generalization and to determine when to terminate them during the generalization. | Yang Weifang Yan Haowen Li Jonathan | 2015 | Geodesy and Geodynamics2015，6，2： | 5 |
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