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| 1 | Dynamic Field Division of Hydrocarbon Migration,Accumulation and Hydrocarbon Enrichment Rules in Sedimentary Basins显示文摘Hydrocarbon distribution rules in the deep and shallow parts of sedimentary basins are considerably different, particularly in the following four aspects. First, the critical porosity for hydrocarbon migration is much lower in the deep parts of basins: at a depth of 7000 m, hydrocarbons can accumulate only in rocks with porosity less than 5%. However, in the shallow parts of basins (i.e., depths of around 1000 m), hydrocarbon can accumulate in rocks only when porosity is over 20%. Second, hydrocarbon reservoirs tend to exhibit negative pressures after hydrocarbon accumulation at depth, with a pressure coefficient less than 0.7. However, hydrocarbon reservoirs at shallow depths tend to exhibit high pressure after hydrocarbon accumulation. Third, deep reservoirs tend to exhibit characteristics of oil (-gas)-water inversion, indicating that the oil (gas) accumulated under the water. However, the oil (gas) tends to accumulate over water in shallow reservoirs. Fourth, continuous unconventional tight hydrocarbon reservoirs are distributed widely in deep reservoirs, where the buoyancy force is not the primary dynamic force and the caprock is not involved during the process of hydrocarbon accumulation. Conversely, the majority of hydrocarbons in shallow regions accumulate in traps with complex structures. The results of this study indicate that two dynamic boundary conditions are primarily responsible for the above phenomena: a lower limit to the buoyancy force and the lower limit of hydrocarbon accumulation overall, corresponding to about 10%-12% porosity and irreducible water saturation of 100%, respectively. These two dynamic boundary conditions were used to divide sedimentary basins into three different dynamic fields of hydrocarbon accumulation: the free fluid dynamic field, limit fluid dynamic field, and restrain fluid dynamic field. The free fluid dynamic field is located between the surface and the lower limit of the buoyancy force, such that hydrocarbons in this field migrate and accumulate under the influence of, for example, the buoyancy force, pressure, hydrodynamic force, and capillary force. The hydrocarbon reservoirs formed are characterized as 'four high,' indicating that they accumulate in high structures, are sealed in high locations, migrate into areas of high porosity, and are stored in reservoirs at high pressure. The basic features of distribution and accumulation in this case include hydrocarbon migration as a result of the buoyancy force and formation of a reservoir by a caprock. The limit fluid dynamic field is located between the lower limit of the buoyancy force and the lower limit of hydrocarbon accumulation overall; the hydrocarbon migrates and accumulates as a result of, for example, the molecular expansion force and the capillary force. The hydrocarbon reservoirs formed are characterized as 'four low,' indicating that hydrocarbons accumulate in low structures, migrate into areas of low porosity, and accumulate in reservoirs with low pressure, and that oil(-gas)-water inversion occurs at low locations. Continuous hydrocarbon accumulation over a large area is a basic feature of this field. The restrain fluid dynamic field is located under the bottom of hydrocarbon accumulation, such that the entire pore space is filled with water. Hydrocarbons migrate as a result of the molecular diffusion force only. This field lacks many of the basic conditions required for formation of hydrocarbon reservoirs: there is no effective porosity, movable fluid, or hydrocarbon accumulation, and potential for hydrocarbon exploration is low. Many conventional hydrocarbon resources have been discovered and exploited in the free fluid dynamic field of shallow reservoirs, where exploration potential was previously considered to be low. Continuous unconventional tight hydrocarbon resources have been discovered in the limit fluid dynamic field of deep reservoirs; the exploration potential of this setting is thought to be tremendous, indicating that future exploration should be focused primarily in this direction. | PANG Xiongqi LIU Keyu MA Zhongzhen JIANG Zhenxue XIANG Caifu HUO Zhipeng PANG Hong CHEN Junqing | 2012 | Acta Geologica Sinica(English Edition)2012，86，6： | 13 |
| 2 | Classification of Complex Reservoirs in Superimposed Basins of Western China显示文摘许多通过重叠在西方的中国的沉积的盆被形成并且混合至少二以前开发了沉积的盆,一般来说,他们能作为复杂的附加的盆被称为。这些盆和单型盆之间的不同差别是他们在地质的历史上的不连续的 stratigraphic 沉积, stratigraphic 结构和 stratigraphic 压力紧张行动。在结构的节上基于按年代先后的年龄的关联,附加的盆能在这研究被划分成五种类型:(1 ) 连续沉积类型附加了盆,(2 ) 中间、迟了的 stratigraphic 附加了盆,(3 ) 早、迟了的 stratigraphic 附加了盆,(4 ) 早、中间的 stratigraphic 附加了盆,并且(5 ) 长期的暴露的附加的盆。多重 source-reservoir-caprock 集合在如此的盆发展了。另外,多级式的烃产生和逐出,多重来源,多不的烃累积和多重类型的烃水库调整,改革和破坏发生在这些盆。在附加的盆广泛地被发现了到日期的复杂水库从这的原因正在合拢的主要水库,和根有显著地不同的地质的特征,剥光和破裂效果象联系渗出物一样在附加的盆由多相的构造事件引起了,散开,掉下,氧化,降级并且裂开。基于他们的开始特征,复杂水库被划分成五个范畴:(1 ) 主要水库,(2 ) 套住调整类型水库,(3 ) 部件变体水库,(4 ) 分阶段执行变换类型水库并且(5 ) 改革规模的水库。 | PANG Xiongqi ZHOU Xinyuan LIN Changsong HUO Zhipeng LUO Xiaorong PANG Hong | 2010 | Acta Geologica Sinica(English Edition)2010，84，5： | 11 |
| 3 | Multiple-Element Matching Reservoir Formation and Quantitative Prediction of Favorable Areas in Superimposed Basins显示文摘在韦斯特中国的附加的盆经历了多级式的构造事件和 multicycle 烃水库形成,并且复杂的烃水库在这种类型的盆广泛地被发现了。大多数复杂的烃水库被重定位,规模重建,部件变化和阶段国家转变描绘,并且他们的分布是很困难的预言。研究显示出那地区性的 caprock (C) ,高质量的沉积外形(存款, D ) , paleohighs (山, M ) 并且来源岩石(S) 是贡献复杂的烃水库形成和西方的附加的盆的分发的四个地质的元素。四个元素的纵的顺序的联合控制烃水库形成的阶层,并且平面重迭和联合控制烃水库的范围,他们在 geohistory 的同时的联合效果决定烃水库形成的时间。多重元素的匹配水库形成介绍水库形成的一个基本模式在里面附加的盆,和我们建议它被表示为 T-CDMS。基于多重元素的匹配水库形成模式,一个全面水库形成索引(Tcdms ) 在这篇论文被开发描绘水库形成条件,和一个方法被介绍在附加的盆预言水库形成范围和出现的概率。通过新理论,方法和技术的申请,在奥陶纪的出现的有利水库形成范围和概率在四个不同水库形成时期在 Tarim 盆指向地区被预言。结果证明中央 Tarim, Yinmaili 和 Lunnan 是奥陶纪油和煤气的地可能形成了的三个很有利的区域。有当前发现的烃水库的预言结果的巧合到达 97% 。这反映新理论,方法和技术的有效性和可靠性。 | WANG Huaijie PANG Xiongqi WANG Zhaoming YU Qiuhua HUO Zhipeng MENG Qingyang | 2010 | Acta Geologica Sinica(English Edition)2010，84，5： | 8 |
| 4 | Disruption of adipocyte HIF-1α improves atherosclerosis through the inhibition of ceramide generation显示文摘Atherosclerosis is a chronic multifactorial cardiovascular disease.Western diets have been reported to affect atherosclerosis through regulating adipose function.In high cholesterol diet-fed ApoE^(−/−)mice,adipocyte HIF-1αdeficiency or direct inhibition of HIF-1αby the selective pharmacological HIF-1αinhibitor PX-478 alleviates high cholesterol diet-induced atherosclerosis by reducing adipose ceramide generation,which lowers cholesterol levels and reduces inflammatory responses,resulting in improved dyslipidemia and atherogenesis.Smpd3,the gene encoding neutral sphingomyelinase,is identified as a new target gene directly regulated by HIF-1αthat is involved in ceramide generation.Injection of lentivirus-SMPD3 in epididymal adipose tissue reverses the decrease in ceramides in adipocytes and eliminates the improvements on atherosclerosis in the adipocyte HIF-1α-deficient mice.Therefore,HIF-1αinhibition may constitute a novel approach to slow atherosclerotic progression. | Pengcheng Wang Guangyi Zeng Yu Yan Song-yang Zhang Yongqiang Dong Yangming Zhang Xingzhong Zhang Huiying Liu Zhipeng Zhang Changtao Jiang Yanli Pang | 2022 | Acta Pharmaceutica Sinica B2022，12，4： | 6 |
| 5 | Dynamic Field Division of Hydrocarbon Migration, Accumulation and Hydrocarbon Enrichment Rules in Sedimentary Basins显示文摘 | PANG Xiongqi LIU Keyu MA Zhongzhen JIANG Zhenxue XIANG Caifu HUO Zhipeng PANG Hong CHEN Junqing | 2013 | Acta Geologica Sinica ‐ English Edition2013，，： | 1 |
| 6 | Collaborative City Digital Twin for the COVID-19 Pandemic:A Federated Learning Solution显示文摘The novel coronavirus,COVID-19,has caused a crisis that affects all segments of the population.As the knowledge and understanding of COVID-19 evolve,an appropriate response plan for this pandemic is considered one of the most effective methods for controlling the spread of the virus.Recent studies indicate that a city Digital Twin(DT)is beneficial for tackling this health crisis,because it can construct a virtual replica to simulate factors,such as climate conditions,response policies,and people's trajectories,to help plan efficient and inclusive decisions.However,a city DTsystem relies on long-term and high-quality data collection to make appropriate decisions,limiting its advantages when facing urgent crises,such as the COVID-19 pandemic.Federated Learning(FL),in which all clients can learn a shared model while retaining all training data locally,emerges as a promising solution for accumulating the insights from multiple data sources efficiently.Furthermore,the enhanced privacy protection settings removing the privacy barriers lie in this collaboration.In this work,we propose a framework that fused city DT with FL to achieve a novel collaborative paradigm that allows multiple city DTs to share the local strategy and status quickly.In particular,an FL central server manages the local updates of multiple collaborators(city DTs),providing a global model that is trained in multiple iterations at different city DT systems until the model gains the correlations between various response plans and infection trends.This approach means a collaborative city DT paradigm fused with FL techniques can obtain knowledge and patterns from multiple DTs and eventually establish a'global view'of city crisis management.Meanwhile,it also helps improve each city's DT by consolidating other DT's data without violating privacy rules.In this paper,we use the COVID-19 pandemic as the use case of the proposed framework.The experimental results on a real dataset with various response plans validate our proposed solution and demonstrate its superior performance. | Junjie Pang Yan Huang Zhenzhen Xie Jianbo Li Zhipeng Cai | 2021 | Tsinghua Science and Technology2021，26，5： | 1 |
| 7 | Wavefront shaping: A versatile tool to conquer multiple scattering in multidisciplinary fields显示文摘Optical techniques offer a wide variety of applications as light-matter interactions provide extremely sensitive mechanisms to probe or treat target media.Most of these implementations rely on the usage of ballistic or quasi-ballistic photons to achieve high spatial resolution.However,the inherent scattering nature of light in biological tissues or tissue-like scattering media constitutes a critical obstacle that has restricted the penetration depth of non-scattered photons and hence limited the implementation of most optical techniques for wider applications.In addition,the components of an optical system are usually designed and manufactured for a fixed function or performance.Recent advances in wavefront shaping have demonstrated that scattering-or component-induced phase distortions can be compensated by optimizing the wavefront of the input light pattern through iteration or by conjugating the transmission matrix of the scattering medium. | Zhipeng Yu Huanhao Li Tianting Zhong Jung-Hoon Park Shengfu Cheng Chi Man Woo Qi Zhao Jing Yao Yingying Zhou Xiazi Huang Weiran Pang Hansol Yoon Yuecheng Shen Honglin Liu Yuanjin Zheng YongKeun Park Lihong V.Wang Puxiang Lai | 2022 | The Innovation2022，3，5： | 1 |
| 8 | Machine learning based altitude-dependent empirical LoS probability model for air-to-ground communications显示文摘Line-of-sight(LoS)probability prediction is critical to the performance optimization of wireless communication systems.However,it is challenging to predict the LoS probability of air-to-ground(A2G)communication scenarios,because the altitude of unmanned aerial vehicles(UAVs)or other aircraft varies from dozens of meters to several kilometers.This paper presents an altitude-dependent empirical LoS probability model for A2G scenarios.Before estimating the model parameters,we design a K-nearest neighbor(KNN)based strategy to classify LoS and non-LoS(NLoS)paths.Then,a two-layer back propagation neural network(BPNN)based parameter estimation method is developed to build the relationship between every model parameter and the UAV altitude.Simulation results show that the results obtained using our proposed model has good consistency with the ray tracing(RT)data,the measurement data,and the results obtained using the standard models.Our model can also provide wider applicable altitudes than other LoS probability models,and thus can be applied to different altitudes under various A2G scenarios. | Minghui PANG Qiuming ZHU Zhipeng LIN Fei BAI Yue TIAN Zhuo LI Xiaomin CHEN | 2022 | Frontiers of Information Technology & Electronic Engineering2022，23，9： | 0 |
| 9 | Overlying water fluoride concentrations influence dissolved organic matter composition and migration from pore water in sediment via bacterial mechanisms显示文摘Fluoride(F^(-))is widespread in aquatic environments;however,it is not clear whether the fluctuation of F^(-)concentrations in overlying lake water affects the composition and migration of dissolved organic matter(DOM)from sediment.A case study was presented in Sand Lake,China,and an experiment was conducted to analyze the influence of different F^(-)concentrations in overlying water on DOM characteristics.Diffusion resulted in similarities in DOM components between overlying and pore waters,and bacterial activities and enzyme variation resulted in differences between them.Higher F^(-)concentrations in overlying water resulted in a higher pH of pore water,which favored the enrichment of protein-like substances.Higher F^(-)concentrations caused lower DOM concentrations and lower maximum fluorescence intensities(Fmax)of protein-like components in pore water.The F^(-)concentrations had significantly negative correlations with Shannon indexes(P<0.05).Thiobacillus influenced the migration of tyrosinelike substances by decreasing the pH of pore water.Trichococcus and Fusibacter altered the Fmax of protein-like,humic-like,and fulvic-like substances.The F^(-)concentrations affected the DOM composition and migration due to the response of functional bacterial communities,which were positively correlated with the relative abundance of Thiobacillus and negatively correlated with the relative abundances of Trichococcus and Fusibacter.The high F^(-)concentrations influenced the biosynthesis and degradation of protein-like substances by shifting the abundances of the relevant enzymes.The results of this study may provide ideas for investigating DOM cycling under the influence of F^(-),especially in lakes with fluctuations in F^(-)concentrations. | Xiang Zhu Zibo Wang Yidan Luo Yushen Ma Zhipeng Xu Longmian Wang Fuquan Peng Qingqing Pang Yiping Li Fei He Bin Xu | 2022 | Environmental Science and Ecotechnology2022，，2： | 0 |
| 10 | Study on Diffusion Behavior of 72LX Blooms in the Decarburization Process显示文摘To elucidate the diffusion behavior of carbon atoms within the austenite region,the decarbonization of 72LX steel bloom was investigated.Experimental studies were performed to obtain the depth profiles of the decarburized layers within the temperature range of 950-1250℃.The findings show that,within a temperature range of 950-1200℃,both the depth of the decarburization layer of the grain interior(h_(in))and the depth of the decarbonization effect zone of the grain boundary(h_(b))increase concurrently with increasing holding temperatures and times and an inflection point is observed at 1200℃.By measuring the change in the sample diameter before and after the experiment,the change in the radius reduction of h_(Fe) causes by oxidation is obtained.Minimal changes are observed in h_(Fe) when the temperature is below 1050℃.As the temperature increases to 1100℃,a sudden change in h_(Fe) is observed,which corresponds to a rapid increase in oxidation.At temperatures above 1100℃,a more gradual change is observed.From the experimental results,a two-dimensional decarburization mathematical model is established and the carbon diffusion coefficients at different temperatures are obtained by simulation and regression fitting.The simulation values obtain from the carbon diffusion model matched well with the experimental values,thereby confirming the accuracy of the simulation process. | 徐东 ZHENG Bing PANG Hongxuan WANG Xuexi ZOU Zhipeng | 2022 | Journal of Wuhan University of Technology(Materials Science)2022，37，4： | 0 |
| 11 | Degree of ontogenetic diet shift and trophic niche partitioning of Euphausia superba and Thysanoessa macrura are influenced by food availability显示文摘Euphausia superba and Thysanoessa macrura are dominant krill species in the Southern Ocean and their habitats are often overlapped reportedly.Studies of the feeding strategies of these two krill species will help us better understand the coexistence mechanisms and estimate the roles that krill played in the food web of the Southern Ocean.The trophodynamics of E.superba and T.macrura at different ontogenetic stages(furcilia,juvenile,adult)were studied using fatty acid and stable isotope biomarkers in the samples collected in Amundsen Sea during austral summer of 2017/2018 and 2018/2019.Diatoms like Fragilariopsis spp.was the most abundant phytoplankton species in the summer of 2017/2018,while the abundance of phytoplankton in the summer of 2018/2019 was dominated by Phaeocystis sp.The gradual increase of the carnivorous index 18꞉1n-9/18꞉1n-7 with ontogeny of both species in 2018/2019 indicated more carnivorous feeding of adults compared with juveniles and larvae.Meanwhile,greaterδ15N values of T.macrura than that of E.superba were more significant in the juvenile and adult stages during the summer of 2018/2019.Our results indicate that the trophic niche differentiation between the two krill species appeared in postlarval stage and can be influenced by food availability.Compared with E.superba,T.macrura was more prone to feed omnivorously or carnivorously responding to food availability. | Zhipeng PANG Xupeng CHI Zhihui SONG Haibo LI Yunyan CHEN Guang YANG | 2023 | Journal of Oceanology and Limnology2023，41，3： | 0 |
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