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| 1 | Mapping wetland changes in China between 1978 and 2008显示文摘Four wetland maps for all China have been produced,based on Landsat and CBERS-02B remote sensing data between 1978 and 2008 (1978,1990,2000 and 2008).These maps were mainly developed by manual interpretation and validated by substantial field investigation in 2009.Based on these maps,we analyzed the 2008 wetland distribution in China and discussed wetland changes and their drivers over the past 30 years.(i) There were about 324097 km 2 of wetlands in 2008,for which inland marshes or swamps were the most common wetland type (35%),with lakes (26%) second.Most of the wetlands were in Heilongjiang,Inner Mongolia,Qinghai and Tibet,occupying about 55% of the national wetland area.(ii) From 1978 to 2008,China's wetland area continually and significantly decreased,by about 33% based on changes in the wetland map.This was in sharp contrast to the increase in artificial wetlands,which increased by about 122%.Inland marshes accounted for the main loss of total wetlands from 1978 to 2000.From 2000 through 2008,riverine and lacustrine wetlands constituted the main wetland loss.Fortunately however,the rate of wetland loss decreased from 5523 to 831 km 2 /a.(iii) The change ratio of lost natural wetlands (including inland and coastal wetlands) to non-wetlands has decreased slightly over the past 30 years.From 1978 to 1990,nearly all natural wetlands (98%) lost were transformed into non-wetlands.However,the ratio declined to 86% from 1990 to 2000,and to 77% from 2000 to 2008.(iv) All Chinese provinces were divided into three groups according to patterns of wetland changes,which could relate to the driving forces of such changes.Tibet was completely different from other provinces,as it was one representative example in which there was a net wetland increase,because of global warming and decreased human activity since 1990.Increased economic development caused considerable wetland loss in most eastern provinces,and artificial wetlands increased. | NIU ZhenGuo ZHANG HaiYing WANG XianWei YAO WenBo ZHOU DeMin ZHAO KuiYi ZHAO Hui LI NaNa HUANG HuaBing LI CongCong YANG Jun LIU CaiXia LIU Shuang WANG Lin LI Zhan YANG ZhenZhong QIAO Fei ZHENG YaoMin CHEN YanLei SHENG YongWei GAO XiaoHong ZHU WeiHong WANG WenQing WANG Hong WENG YongLing ZHUANG DaFang LIU JiYuan LUO ZhiCai CHENG Xiao GUO ZiQi GONG Peng | 2012 | Chinese Science Bulletin2012，57，22： | 51 |
| 2 | Wavelet neural network based fault diagnosis in nonlinear analog circuits显示文摘The theories of diagnosing nonlinear analog circuits by means of the transient response testing are studied. Wavelet analysis is made to extract the transient response signature of nonlinear circuits and compress the signature dada. The best wavelet function is selected based on the between-category total scatter of signature. The fault dictionary of nonlinear circuits is constructed based on improved back-propagation(BP) neural network. Experimental results demonstrate that the method proposed has high diagnostic sensitivity and fast fault identification and deducibility. | Yin Shirong Chen Guangju Xie Yongle | 2006 | Journal of Systems Engineering and Electronics2006，17，3： | 16 |
| 3 | Feature evaluation and extraction based on neural network in analog circuit fault diagnosis显示文摘Choosing the right characteristic parameter is the key to fault diagnosis in analog circuit. The featureevaluation and extraction methods based on neural network are presented. Parameter evaluation of circuit features is realized by training results from neural network; the superior nonlinear mapping capability is competent for extracting fault features which are normalized and compressed subsequently. The complex classification problem on fault pattern recognition in analog circuit is transferred into feature processing stage by feature extraction based on neural network effectively, which improves the diagnosis efficiency. A fault diagnosis illustration validated this method. | Yuan Haiying Chen Guangju Xie Yongle | 2007 | Journal of Systems Engineering and Electronics2007，18，2： | 16 |
| 4 | WDR26 promotes mitophagy of cardiomyocytes induced by hypoxia through Parkin translocation显示文摘心肌的局部缺血是血流动的减小引起到心的一个心条件,阻止心收到足够的氧。心肌的局部缺血全球性是死亡的最普通的原因。心 ischemic preconditioning (欧洲电脑生产厂商) 对局部缺血和 ischemia-reperfusion 损害导致的心肌的房间死亡有保护的效果。WDR26 最近作为蛋白质被识别了被增加后面的老鼠心脏的欧洲电脑生产厂商。WDR26 能支持 H9c2 房间的增长并且通过禁止 apoptosis.?However 保护 cardiomyocytes 免于氧化应力,它在心肌的局部缺血的角色是不清楚的。这研究的目的是在心肌的局部缺血和 H9c2 房间组织缺氧探索 WDR26 的角色。我们的结果证明 WDR26 被心肌的局部缺血和 H9c2 房间组织缺氧导致。WDR26 通过禁止保护 H9c2 房间免于组织缺氧损害 ? LDH 版本和增加的房间生存能力。WDR26 在 H9c2 房间的组织缺氧支持导致组织缺氧的 autophagy。我们进一步证明在 H9c2 房间组织缺氧, WDR26 增加 mitochondrial 膜潜力,从而线粒体的增加 Parkin translocation。在 Parkin 是在线粒体的 translocated 以后, WDR26 能在 H9c2 房间的组织缺氧增加 mitochondrial 蛋白质 ubiquitination。WDR26 是对组织缺氧的反应的一个调停人,并且 WDR26 在调停组织缺氧的 autophagy 和 mitophagy 起一个重要作用。这研究在组织缺氧期间在 cardiomyocyte 损害提供新奇卓见进 WDR26 的保护的角色。WDR26 可以为心肌的局部缺血的处理用作一个潜在的目标。 | Yansheng Feng Jia Zhao Huifang Hou Hui Zhang Yunjuan Jiao Jiangang Wang Yongling Wang Yinping Sun | 2016 | Acta Biochimica et Biophysica Sinica2016，48，12： | 13 |
| 5 | The Hong Kong–Zhuhai–Macao Bridge显示文摘The Hong Kong–Zhuhai–Macao Bridge (HZMB) is located at the Pearl River Estuary on the southeast coast of China;it is the longest as-build marine crossings made of island, tunnel, and bridge. It links Hong Kong in the east with Zhuhai–Macao in the west with a total length of 55 km. The link was built according to the highway standard of six lanes with three lanes going each way;it has a design speed of 100 km·h^-1 and a design life of 120 years. The HZMB has improved traffic conditions on the east and west sides of the coast of the Pearl River Estuary and strengthened the communication, transportation, and economic integration of the three regions, thus accelerating the formation of the Guangdong–Hong Kong–Macao Greater Bay Area. This paper introduces the design and construction of the HZMB, with a focus on the new technologies involved in building the artificial islands and immersed tunnel. | Yongling Zhu Ming Lin Fanchao Meng Xiaodong Liu Wei Lin | 2019 | Engineering2019，5，1： | 11 |
| 6 | Modelling and simulation of flight control electromechanical actuators with special focus on model architecting, multidisciplinary effects and power flows显示文摘In the aerospace field, electromechanical actuators are increasingly being implemented in place of conventional hydraulic actuators. For safety-critical embedded actuation applications like flight controls, the use of electromechanical actuators introduces specific issues related to thermal balance, reflected inertia, parasitic motion due to compliance and response to failure. Unfortunately, the physical effects governing the actuator behaviour are multidisciplinary, coupled and nonlinear. Although numerous multi-domain and system-level simulation packages are now available on the market, these effects are rarely addressed as a whole because of a lack of scientific approaches for model architecting, multi-purpose incremental modelling and judicious model implementation. In this publication, virtual prototyping of electromechanical actuators is addressed using the Bond-Graph formalism. New approaches are proposed to enable incremental modelling,thermal balance analysis, response to free-run or jamming faults, impact of compliance on parasitic motion, and influence of temperature. A special focus is placed on friction and compliance of the mechanical transmission with fault injection and temperature dependence. Aileron actuation is used to highlight the proposals for control design, energy consumption and thermal analysis, power network pollution analysis and fault response. | Fu Jian Jean-Charles Maré Fu Yongling | 2017 | Chinese Journal of Aeronautics2017，30，1： | 11 |
| 7 | Design and performance analysis of position-based impedance control for an electrohydrostatic actuation system显示文摘Electrohydrostatic actuator(EHA) is a type of power-by-wire actuator that is widely implemented in the aerospace industry for flight control, landing gears, thrust reversers, thrust vector control, and space robots. This paper presents the development and evaluation of positionbased impedance control(PBIC) for an EHA. Impedance control provides the actuator with compliance and facilitates the interaction with the environment. Most impedance control applications utilize electrical or valve-controlled hydraulic actuators, whereas this work realizes impedance control via a compact and efficient EHA. The structures of the EHA and PBIC are firstly introduced. A mathematical model of the actuation system is established, and values of its coefficients are identified by particle swarm optimization. This model facilitates the development of a position controller and the selection of target impedance parameters. A nonlinear proportional-integral position controller is developed for the EHA to achieve the accurate positioning requirement of PBIC. The controller compensates for the adverse effect of stiction, and a position accuracy of 0.08 mm is attained.Various experimental results are presented to verify the applicability of PBIC to the EHA. The compliance of the actuator is demonstrated in an impact test. | Yongling FU Xu HAN Nariman SEPEHRI Guozhe ZHOU Jian FU Liming YU Rongrong YANG | 2018 | Chinese Journal of Aeronautics2018，31，3： | 10 |
| 8 | Phenotypic and genetic variation between two populations of the Chinese yellow pond turtle, Mauremys mutica (Cantor, 1842)显示文摘Mauremys mutica(Cantor,1842)is an endangered species in China.Main phenotypic variations inbody color,body weight,body shape,clutch size,egg size,and hatchling size were revealed betweenthe southern and northern populations.Both populations have the phenomenon of'larger male'sexualsize dimorphism(SSD),especially in the southern population.Furthermore,genetic variations betweenthe two populations were analyzed by RAPD band patterns of 30 random individuals in each population.The average genetic distance was 0.299±0.108 among the samples of two populations.The average ge-netic distance between southern and northern populations was 0.305±0.046.Cluster analysis indicatedthat all the individuals from the southern and northern populations were clustered among themselves toform two distinct clades.A total of 20 population-specific RAPD fragments were scored from 16 primers,and could be used as RAPD markers for distinguishing the southern and the northern population.Basedon the nucleotide sequences of two RAPD markers,two pairs of SCAR primers(SC1-S and SC2-S)weredesigned,which could be used as SCAR markers for the southern population.According to the significantphenotypic and genetic variations,we suggested that the northern population and southern populationmight be considered as two separate taxa,the'northern taxon'and the'southern taxon',and the con-servation should be respectively conducted on the two taxa. | 朱新平 Zhou Li Chen Yongle Du Hejun Gui Jianfang | 2008 | High Technology Letters2008，14，1： | 10 |
| 9 | The role of RIP3 in cardiomyocyte necrosis induced by mitochondrial damage of myocardial ischemia-reperfusion显示文摘Myocardial damage caused by myocardial ischemia-reperfusion injury (MIRI)is difficult to be alleviated because cardiomyocyte necrosis is an irreversible and unregulated death form.Recently, necroptosis,a necrosis form caused by tumor necrosis factor-α (TNF-α)and Fas ligand (FasL),was found to be regulated by receptor interacting protein 3 (RIP3)and RIP3-receptor interacting protein 1 (RIP1)-mixed lineage kinase domain like protein (MLKL)pathway.But it is unclear whether they also play a regulatory role in MIRI-induced necroptosis.Our previous results showed that in rat MIRI,RIP3 could translocate and express highly in mitochondria.Therefore,it is important to explore proteins that interact with RIP3 which was translocated to mitochondria.The aim of this study was to explore the role of RIP3 in cardiomyocyte necrosis induced by mitochondrial damage of hypoxia/reoxygenation (H/R).Our results showed that H/R could cause RIP3-depended mitochondrial fragmentation and necrosis-based death;and RIP3-promoted H/R-induced necroptosis in H9c2 cells through increasing lactate dehydrogenase release and inhibiting cell viability.This process did not require RIP1 or MLKL but dynamin-related protein 1 (Drp1),which was related to Drpl activation,reactive oxygen species elevation,and △Ψm decline.This study provides novel insights into the role of RIP3 in cardiomyocyte injury during H/R.RIP3 may serve as a potential target for the treatment of MIRI. | Huifang Hou Yongling Wang Qiong Li Zaibing Li Yan Teng Jingyu Li Xiaoying Wang Junli Chen Ning Huang | 2018 | Acta Biochimica et Biophysica Sinica2018，50，11： | 10 |
| 10 | Architecture Optimization of More Electric Aircraft Actuation System显示文摘在飞机的力量来源和致动器的可选的类型由于在更电的技术的快开发是越来越多样的,它做不同力量来源的联合,致动器在在空中的使活动系统的体系结构优化进程变得极其复杂。传统的尝试方法不能满足设计要求。第一,在这糊更多的电的飞机(MEA ) 的作文飞行控制使活动系统(FCAS ) 被介绍,并且可能的建筑学数量是计算的。第二,关于安全可靠性,重量和效率的 FCAS 建筑学的评估标准被建议,并且评估标准值在每控制表面采用的情况中是计算的一样的致动器配置。最后, MEA FCAS 建筑学的优化结果被使用基因算法(GA ) 获得。比作传统的使活动系统建筑学,它仅仅采用伺服阀门控制了水力的致动器,优化更电的使活动系统建筑学的重量能被 6% 减少,并且效率能被 30% 基于安全可靠性要求改进。 | QI Haitao FU Yongling QI Xiaoye LANG Yan | 2011 | Chinese Journal of Aeronautics2011，24，4： | 9 |
| 11 | Multi-level virtual prototyping of electromechanical actuation system for more electric aircraft显示文摘Electromechanical actuators(EMAs) are becoming increasingly attractive in the field of more electric aircraft because of their outstanding benefits, which include reduced fuel burn and maintenance cost, enhanced system flexibility, and improved management of fault detection and isolation. However, electromechanical actuation raises specific issues when being used for safetycritical aerospace applications like flight controls: huge reflected inertia to load, jamming-type failure, and increase of backlash with service due to wear and local dissipation of heat losses for thermal balance. This study proposes an incremental approach for virtual prototyping of EMAs. It is driven by a model-based system engineering process in order to enable simulation-aided design.Best practices supported by Bond graph formalism are suggested to develop a model's structure efficiently and to make the model ready for use(or extension) by addressing the above mentioned issues. Physical effects are progressively introduced, and the realism of lumped-parameter models is increased step-by-step. In particular, multi-level component models are architected to ensure continuity between engineering activities. The models are implemented in the AMESim simulation environment, and simulation responses are given to illustrate how they can be used for preliminary sizing, control design, thermal balance verification, and faults to failure analysis. The proposed best practices intend to provide engineers with fast, reusable, and efficient means to assess performance virtually and enhance maturity, performance, and robustness. | Jian FU Jean-Charles MARE Liming YU Yongling FU | 2018 | Chinese Journal of Aeronautics2018，31，5： | 9 |
| 12 | Seismic response analysis of road vehicle-bridge system for continuous rigid frame bridges with high piers显示文摘The objective of this study is to investigate the effects of earthquakes on road vehicle-bridge coupling vibration systems. A two-axle highway freight vehicle is treated as a 13 degree-of-freedom system composed of several rigid bodies, which are connected by a series of springs and dampers. The framework of the earthquake-vehicle-bridge dynamic analysis system is then established using an earthquake as the external excitation. The equivalent lateral contact force serves as the judgment criteria for sideslip accidents according to reliability theory. The entire process of the vehicle crossing the bridge is considered for a very high pier continuous rigid frame bridge. The response characteristics of the vehicle and the bridge are discussed in terms of various parameters such as earthquake ground motion, PGA value of the earthquake, incident angle, pier height, vehicle speed and mass. It is found that seismic excitation is the most influential factor in the responses of the vehicle-bridge system and that the safety of vehicles crossing the bridge is seriously impacted by the dual excitations of earthquake and bridge vibration. | Li Yongle Chen Ning Zhao Kai Liao Haili | 2012 | Earthquake Engineering and Engineering Vibration2012，11，4： | 9 |
| 13 | Random dynamic analysis of vertical train–bridge systems under small probability by surrogate model and subset simulation with splitting显示文摘The response of the train–bridge system has an obvious random behavior.A high traffic density and a long maintenance period of a track will result in a substantial increase in the number of trains running on a bridge,and there is small likelihood that the maximum responses of the train and bridge happen in the total maintenance period of the track.Firstly,the coupling model of train–bridge systems is reviewed.Then,an ensemble method is presented,which can estimate the small probabilities of a dynamic system with stochastic excitations.The main idea of the ensemble method is to use the NARX(nonlinear autoregressive with exogenous input)model to replace the physical model and apply subset simulation with splitting to obtain the extreme distribution.Finally,the efficiency of the suggested method is compared with the direct Monte Carlo simulation method,and the probability exceedance of train responses under the vertical track irregularity is discussed.The results show that when the small probability of train responses under vertical track irregularity is estimated,the ensemble method can reduce both the calculation time of a single sample and the required number of samples. | Huoyue Xiang Ping Tang Yuan Zhang Yongle Li | 2020 | Railway Engineering Science2020，28，3： | 8 |
| 14 | Microstructure and tensile properties of low cost titanium alloys at different cooling rate显示文摘Titanium and titanium alloys have several advantages, but the cost of titanium alloys is very expensive compared with the traditional metal materials. This article introduces two new low-cost titanium alloys Ti-2.1Cr-1.3Fe (TCF alloy) and Ti-3Al-2.1Cr-1.3Fe (TACF alloy). In this study, we used Cr-Fe master alloy as one of the raw materials to develop the two new alloys. We introduce the microstructure and tensile properties of the two new alloys from β solution treated with different cooling methods. Optical microscopy (OM), X-ray diffractometry (XRD), and transmission electron microscopy (TEM) were employed to analyze the phase constitution, and scanning electron microscopy (SEM) was used to observe the fracture surfaces. The results indicate that the microstructures consist of β grain boundary and α′ martensite after water quenching (WQ), β matrix and α phase after air cooling (AC) and furnace cooling (FC), respectively. Also, the microstructure is the typical basketweave structures after FC. Of course, athermal ω is also observed by TEM after WQ. The strength increases with decreasing cooling rates and the plasticity is reversed. Because of the athermal ω, the strength and ductility are highest and lowest when the cooling method is WQ. The strength of TACF alloy is higher than the TCF alloy, but the plasticity is lower. The fracture surfaces are almost entirely covered with dimples under the cooling methods of AC and FC. Also, we observe an intergranular fracture area that is generated by athermal ω, although some dimples are observed after WQ. | Wang Guo Hui Songxiao Ye Wenjun Mi Xujun Wang Yongling Zhang Wenjing | 2012 | Rare Metals2012，31，6： | 8 |
| 15 | Construction management and technical innovation of the main project of Hong Kong–Zhuhai–Macao Bridge显示文摘Design Units:CCCC Highway Consultants Co.,Ltd.;China Zhongtie Major Bridge Reconnaissance&Design Institute Co.,Ltd.Construction Units:China Communications Construction Company Limited Consortium;China | Yongling ZHU Jinwen ZHANG Xinglin GAO | 2018 | Frontiers of Engineering Management2018，5，1： | 7 |
| 16 | Review of cylinder block/valve plate interface in axial piston pumps: Theoretical models,experimental investigations, and optimal design显示文摘Axial piston pumps have been widely used in aircraft hydraulic systems to supply the system with pressurized fluid. The continuous improvement of the aircraft performance has put forward the demand on aviation piston pumps for high power density, safety, and reliability. The lubricating interfaces in axial piston machines are the key design issue that greatly determines the pump performance and service life. The cylinder block/valve plate interface is one of these critical lubricating interfaces and has received considerable attention from many researchers in the last half century. This study aims to review the state-of-the-art literature on the cylinder block/valve plate interface comprehensively and systematically. First, we introduce various theoretical models developed to investigate the lubrication behaviors of the interface and compare them in terms of their assumptions and limitations. Second, the experimental studies on the cylinder block/valve plate interface are presented comprehensively, where the involved test rigs are divided into three types according to their fidelity levels and measurement functionality. Third, we summarize some typical approaches of structure optimization, surface shaping, and surface strengthening, which help improve the load-carrying and anti-wear capacities of the interface under severe operating conditions. Finally, the challenges and future trends of the cylinder block/valve plate interface research are discussed briefly. | Jiang'ao ZHAO Yongling FU Jiming MA Jian FU Qun CHAO Yan WANG | 2021 | Chinese Journal of Aeronautics2021，34，1： | 7 |
| 17 | Intestinal toxicity of deoxynivalenol is limited by supplementation with Lactobacillus plantarum JM113 and consequentially altered gut microbiota in broiler chickens显示文摘Background: Limited research has focused on the effect of Lactobacillus on the intestinal toxicity of deoxynivalenol(DON).The present study was conducted to investigate the role of Lactobacillus plantarum(L.plantarum) JM113 in protecting against the intestinal toxicity caused by DON.Methods: A total of 144 one-day-old healthy Arbor Acres broilers were randomly distributed into 3 treatments,including the CON(basal diet),the DON(extra 10 mg/kg deoxynivalenol),and the DL(extra 1 × 109 CFU/kg L.plantarum JM113 based on DON group) treatments.The growth performance,organ indexes,intestinal morphology,pancreatic digestive enzymes,intestinal secreted immunoglobulin A(sIgA),jejunal transcriptome,and intestinal microbiota were evaluated.Results: Compared with the CON and DL groups,the DON supplementation altered intestinal morphology,especially in duodenum and jejunum,where villi were shorter and crypts were deeper(P < 0.05).Meanwhile,the significantly decreased mRNA expression of jejunal claudin-1 and occludin(P < 0.05),ileal rBAT and jejunal GLUT1 of 21-day-old broilers(P < 0.05),as well as duodenal PepT1 and ileal rBAT of 42-day-old broilers were identified in the DON group.Moreover,supplementation with L.plantarum JM113 could increase duodenal expression of IL-10 and IL-12 of 21-dayold broilers,ileal s IgA of 42-day-old broilers,and the bursa of Fabricius index of 21-day-old broilers.Further jejunal transcriptome proved that the genes related to the intestinal absorption and metabolism were significantly reduced in the DON group but a significant increase when supplemented with extra L.plantarum JM113.Furthermore,the bacteria related to nutrient utilization,including the Proteobacteria,Escherichia,Cc-115(P < 0.05),Lactobacillus and Prevotella(P < 0.1) were all decreased in the DON group.By contrast,supplementation with L.plantarum JM113 increased the relative abundance of beneficial bacterium,including the Bacteroidetes,Roseburia,Anaerofustis,Anaerostipe,and Ruminococcus bromi(P < 0.05).Specifically,the increased abundance of bacteria in the DL group could be proved by the significantly increased caecal content of propionic acid,n-Butyric acid,and total short-chain fatty acid.Conclusions: L.plantarum JM113 enhanced the digestion,absorption,and metabolic functions of the gut when challenged with DON by reducing the injury to intestinal barriers and by increasing the abundance of beneficial bacterium. | Shengru Wu Yanli Liu Yongle Duan Fangyuan Wang Fangshen Guo Fang Yan Xiaojun Yang Xin Yang | 2019 | Journal of Animal Science and Biotechnology2019，10，1： | 7 |
| 18 | Improvement of Foaming and Emulsifying Properties of Gluten by Conjugation with Fructose through Maillard Reaction显示文摘Gluten has poor emulsifying and foaming ability due to its amino acid composition. In this study, Maillard reaction was used to improve the emulsifying and foaming properties of gluten. The processing conditions for the preparation of gluten-fructose conjugates were optimized by using Box-Behnken model to achieve optimum foaming and emulsifying activity, respectively.The results showed that glycated gluten exhibited enhanced emulsifying activity compared to native control. The processing conditions for the preparation of gluten-fructose conjugates with optimum emulsifying activity were as follows: the temperature was 48℃, reaction time was 72 h, and maltose/gluten(W/W) ratio was 125%. Under such condition, the average emulsifying activity was 66.54%, being improved by about 2.5 times compared with that of native control. The Foaming properties of gluten also increased significantly by glycation modification. The optimum conditions of response were as below: the temperature was 48℃, reaction time was 66 h, and maltose/gluten ratio(W/W) was 110%. Under such condition, the average foaming property was 158.57%, and it was three folds higher than that of the control. | SONG Yongling QIN Ruiqi YANG Shaoming LI Jianghe WANG Ruolan | 2018 | Grain & Oil Science and Technology2018，1，3： | 5 |
| 19 | Morphological Characteristics of Sand Waves in the Middle Taiwan Shoal Based on Multi-beam Data Analysis显示文摘A DTM map of the study area in the Taiwan Shoal was drawn based on precise and highdensity data acquired in a field survey by a multi-beam sounding system(R2Sonic2024). We identified sand waves in the study area at water depths of 13.89–49.12 m; the main sand waves had heights of 5–25 m, lengths of 0.1–2.0 km, and crest lines 0.1–6.5 km long. The spatial distribution of the sand waves on the seabed is dense in the north and sparse in the south and the directions range between 50°–80° and 90°–135°. Between the main sand waves, secondary sand waves develop with heights of 0.1–5.0 m and lengths of 10–100 m, which are difficult to detect by satellite remote sensing. By comparing the evolution structures of the secondary and main sand waves, we identified three evolution modes of the secondary sand waves: parallel, oblique, and divergent modes according to the relative crest directions. Suitable water depth, reciprocating current speeds between 40 and 100 cm/s, and abundant sediment supply create favorable conditions for the formation of linear sand waves. Comparing the DTM maps and profiles of the June 2012 and June 2013 surveys of the same area, we found that the shape and morphology of the sand waves remained mostly unchanged under normal hydrodynamic conditions. | BAO Jingjing CAI Feng REN Jianye ZHENG Yongling WU Chengqiang LU Huiquan XU Yan | 2014 | Acta Geologica Sinica(English Edition)2014，88，5： | 5 |
| 20 | Fine Stratigraphic Division of Volcanic Reservoir by Uniting of Well Data and Seismic Data—Taking Volcanic Reservoir of Member One of Yingcheng Formation in Xudong Area of Songliao Basin for an Example显示文摘Taking member one of Yingcheng Formation of Cretaceous in Xudong area, Xushen Gas Field of Songliao Basin for an example and aimed at the diachronous problem generally existed in volcanic reservoir division, firstly advanced the method of two steps and two unites in the researches of volcanic reservoir finely division that guided by the method that sources controlled and founded the stratigraphic trellis. In this process, volcanic edifices and bodies were identified and traced. The results indicated that aimed strata in study areas could be carved up to six layers of YC1I1, YC1I2, YC1I-II, YC1II1, YC1II2 and YC1III from the top to the bottom. Analyzing causes and firmly united of well data and seismic data could achieve fine stratigraphic division of volcanic reservoir. Surfaces of layers and volcanic bodies were basically unanimous in side direction. Stratum inclination gradually reduced with the distances increased from craters. The results of volcanic reservoir division had preferable consistency with lithologies and volcanic lithofacies and dynamic development data. The researches offered a useful method to stratigraphic division of volcanic reservoir and it had very important significance to effective development of volcanic reservoir in practice. | Huanqing Chen Yongle Hu Jiuqiang Jin Qiquan Ran Lin Yan | 2014 | Journal of Earth Science2014，25，2： | 5 |
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