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Analysis of the Oldest Carbonate Gas Reservoir in China——New Geological Significance of the Dengying Gas Reservoir in the Weiyuan Structure, Sichuan Basin

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Journal of Earth Science 2019年第2期30卷 348-366页

作者： xiao liang Shugen Liu Shubei Wang Bin Deng Siyu Zhou Wenxin Ma State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation Chengdu University of Technology Institute of Geological Exploration and Development of CNPC Chuanqing Drilling Engineering Research Institute of Petroleum Exploration and Development Petro China Southwest Oil&Gas Field Company BGP Inc. China National Petroleum Corporation

The Weiyuan Structure is the largest surface structure in the Sichuan Basin. However, the abundance of the Dengying Formation gas reservoir in the Weiyuan Structure is low. The height of the gas column is 244 m, but the integrated abundance is only 26.4%. After nearly 40 years of exploration, the Gaoshi1 Well and Moxi8 Well yielded gas flows that marked an important exploration success after the discovery of the Sinian Dengying Formation gas reservoir in the Weiyuan Structure, Sichuan Basin, Lower-Paleozoic in 1964. Combined with research examples of oil and gas migration and gas chimneys around the world, the authors used comprehensive geological-geophysical-geochemical research methods to provide a reasonable explanation of the low abundance of the gas reservoir in the Weiyuan Structure based on the surface and subsurface data. The latest research results show that(1) currently, the Weiyuan Structure is the apex of the Dengying Formation in the Mid-Sichuan Basin. The Guang'an, Longnüsi, Gaoshiti-Moxi, and Weiyuan structures are a series of traps in the Dengying Formation with gradual uplifting spill and closure points during the regional uplift of the Himalayan period. The natural gas of the Dengying Formation accumulated in different ways over a wide range and long distance in the Sichuan Basin.(2) At approximately 40 Ma, the Weiyuan area started to uplift and form the present structure, and it is the only outcropped area with the Triassic Jialingjiang Formation and Leikoupo Formation in the surface of the Sichuan Basin(except the steep structural belt in East Sichuan). Caused by the uplift and denudation, the core of the Weiyuan Structure has formed an escaping "skylight" for natural gas. The evidence of a gas chimney includes(1) the component percentage of non-hydrocarbon gas, which decreased from the bottom to the top,(2) the pressure coefficient is normal because the gas reservoir from the Upper Sinian to the Lower Permian commonly have a normal pressure coef

关键词： Sichuan Basin Weiyuan Structure Dengying Formation late reconstruction differential accumulation gas chimney

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Effects of cosolvent on formation and morphology of microspheres in precipitation polymerization of divinylbenzene in supercritical carbon dioxide

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Chinese Chemical Letters 2011年第4期22卷 489-492页

作者： Chun Sheng LiJing Cui liang xiao Li Zhu Xiang Zheng Kong Key Laboratory of Fluorine Chemistry and Chemical Materials of Shandong Province College of Chemistry and Chemical Engineering University of Jinan Jinan 250022 China

Precipitation polymerizations of divinylbenzene（DVB） in pure supercritical carbon dioxide,and parallel runs with presence of a cosolvent were carried *** results showed that use of acetone as the cosolvent contributed greatly to the formation of the monodisperse *** microspheres,with obviously higher uniformity than reported up to date,were achieved using 6-7 mL of acetone in a reactor of 50 mL with DVB concentration of 0.4 mol/L under 16 MPa,a much lower pressure than previously reported without use of cosolvent.

关键词： Polydivinylbenzene microspheres Precipitation polymerization Supercritical carbon dioxide Cosolvent

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Interactions between natural biofilm,substratum surface wettability,and mussel plantigrade settlement

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Science China Earth Sciences 2017年第2期60卷 382-390页

作者： YANG JinLong GUO XingPan DING DeWen GAO Wei HUANG DaoFen CHEN YuRu liang xiao Marine Ecology Research Center The First Institute of Oceanography State Oceanic AdministrationQingdao 266061China Key Laboratory of Exploration and Utilization of Aquatic Genetic Resources Shanghai Ocean UniversityMinistry of EducationShanghai 201306China Collaborative Innovation Center for Zhejiang Marine High-efficiency and Healthy Aquaculture Ningbo 315211China

Mytilus galloprovincialis is a major fouling organism in the inter-tidal ***,the interactions between *** plantigrade settlement,biofilm characteristics,and surface wettability remains ***,we examined *** plantigrade settlement responses to marine biofilms(BFs)on surfaces of varying *** significant difference in mussel settlement was observed on young BFs(7 d)on surfaces of differing wettability;while settlement decreased on older BFs(14,21,and 28 d)formed on low compared to high wettability *** wettability affected BF *** standardized harmonic mean and water contact angles values were not correlated with diatom density and chlorophyll a concentration,but were correlated with bacterial density,dry weight,and *** gradient gel electrophoresis revealed that bacterial community structure differed on BFs on surfaces of varying ***,surface wettability affects biofilm characteristics,and the subsequent changes in BF characteristics may be responsible for the variation in biofilm-inducing activity of *** plantigrade settlement.

关键词： Mytilus galloprovincialis Plantigrade settlement Biofilms Surface wettability Bacterial community

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A SIMPLE FINITE ELEMENT METHOD FOR THE REISSNER-MINDLIN PLATE

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Journal of Computational Mathematics 1994年第1期12卷 46-54页

作者： Cheng xiao-liang (Department of Mathematics, Hangzhou University, Hangzhou, Zhejiang, China) 杭州大学数学系浙江杭州

A simple finite element method for the Reissner-Mindlin plate model in the primitive variables is presented and analyzed. The method uses conforming linear finite elements for both the transverse displacement and rotation. It is proved that the method converges with optimal order uniformly with respect to *** is simpler and more economical than the Arnold-Falk element[1].

关键词： Math A SIMPLE FINITE ELEMENT METHOD FOR THE REISSNER-MINDLIN PLATE IV

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Measurement and Analyses of Molten Ni-CO-Al Alloy Density

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Journal of Materials Science & Technology 2003年第5期19卷 388-390页

作者： Feng xiao and liang FANGDepartment of Materials Science and Engineering, Chongqing Institute of Technology, Chongqing 400050, China Dept. of Mat. Sci. and Eng. Chongqing Inst. of Technol. Chongqing 400050 China

The density of molten Ni-Co-AI alloy was measured using a modified pycnometric method. It has been found that the density of the molten Ni-Co-AI alloy decreases with increasing temperature, Co concentration and the ratio of Co concentration to Ni concentration in the alloy. The coefficient of volume expansion of the molten Ni-Co-AI alloy decreases with increasing Co concentration and the ratio of Co concentration to Ni concentration. The temperature coefficient of density increases with increasing the Co concentration or the ratio of Co concentration to Ni concentration in the alloy. The density of the molten Ni-Co-AI alloy as functions of both temperature and Co concentration was expressed.

关键词： Density Modified pycnometric method Ni-Co-Al alloy

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Intestinal Cckbr-specific knockout mouse as a novel model of salt-sensitive hypertension via sodium over-absorption

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Journal of Geriatric Cardiology 2023年第7期20卷 538-547页

作者： Qiong-Yu ZHANG Yan GUO xiao-liang JIANG Xing LIU Shu-Guang ZHAO Xian-liang ZHOU Zhi-Wei YANG Department of Cardiology Fuwai HospitalNational Center for Cardiovascular DiseaseChinese Academy of Medical Sciences and Peking Union Medical CollegeBeijingChina Emergency Department Taihe County People’s HospitalTaihe CountyAnhui ProvinceChina Institute of Laboratory Animal Science Chinese Academy of Medical Sciences(CAMS)&Peking Union Medical Collage(PUMC)BeijingChina

OBJECTIVES To investigate the value of CCKBR^(fl/fl)villin-Cre mice as a mouse model of salt-sensitive hypertension(SSH).METHODS In the first part,2-month-old CCKBR^(fl/fl)villin-Cre mice(CKO)and control CCKBR^(fl/fl)mice(WT)were fed with normal diet(0.4%NaCl)or high salt diet(4%NaCl),separately for 6 *** the rescue study,one week of hydrochlorothiazide or saline injection were treated with the CKO mice fed high salt *** blood pressure,biochemical indexes,and the expression of small intestinal sodium transporters(NHE3,NKCC1,eNaC)was *** organ injury markers(MMP2/MMP9)and the histopathological changes of kidneys were observed,whereas the changes of duodenal sodium absorption were detected by small intestinal perfusion in *** The CCKBR^(fl/fl)villin-Cre mice with high salt intake exhibited high blood pressure,increased duodenal sodium absorption and urinary sodium excretion,and with renal *** protein expression of NHE3,NKCC1 and eNaC were also significant increase in the intestine of CKO-HS *** with hydrochlorothiazide remarkably attenuated the elevated blood pressure by high salt absorption in the CCKBR^(fl/fl)villin-Cre mice,but no significant histopathological changes were *** These results support a crucial role of intestinal Cckbr deficiency on SSH development and the diuretic antihypertension effect in CCKBR^(fl/fl)villin-Cre *** CCKBR^(fl/fl)villin-Cre mice with the high salt intake may serve as a stable model of salt-sensitive hypertensive induced by sodium overloading.

关键词： hypertension intestine injection

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A Simplified Nonlinear Model of Vertical Vortex-Induced Force on Box Decks for Predicting Stable Amplitudes of Vortex-Induced Vibrations

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Engineering 2017年第6期3卷 854-862页

作者： Le-Dong Zhu xiao-liang Meng Lin-Qing Du Ming-Chang Ding State Key Laboratory of Disaster Reduction in Civil Engineering & Department of Bridge Engineering College of Civil Engineering & Key Laboratory for Wind Resistance Technology of Bridges of Ministry of Transport Tongji University Shanghai 200092 China Shanghai Urban Construction Municipal Engineering (Croup) Co. Ltd. Shanghai 200065 China Tongji Architectural Design (Group) Co. Ltd. Shanghai 200092 China Highway Planning Survey Design and Research Institute Sichuan Provincial Transport Department Chengdu 610041 China

Wind-tunnel tests of a large-scale sectional model with synchronous measurements of force and vibration responses were carried out to investigate the nonlinear behaviors of vertical vortex-induced forces （VIFs） on three typical box decks （i.e., fully closed box, centrally slotted box, and semi-closed box）. The mechanisms of the onset, development, and self-limiting phenomenon of the vertical vortex-induced vibration （VlV） were also explored by analyzing the energy evolution of different vertical VIF components and their contributions to the vertical VIV responses. The results show that the nonlinear components of the vertical VIF often differ from deck to deck; the most important components of the vertical VIF, governing the stable amplitudes of the vertical VIV responses, are the linear and cubic components of velocity contained in the self-excited aerodynamic damping forces. The former provides a constant negative damping ratio to the vibration system and is thus the essential power driving the development of the VIV amplitude, while the latter provides a positive damping ratio proportional to the square of the vibration velocity and is actually the inherent factor making the VIV amplitude self-limiting. On these bases, a universal simplified nonlinear mathematical model of the vertical VIF on box decks of bridges is presented and verified in this paper; it can be used to predict the stable amplitudes of the vertical VIV of long-span bridges with satisfactory accuracy.

关键词： Box deck of bridge Vertical vortex-induced vibration Vertical vortex-induced force Simplified nonlinear model Wind-tunnel test Large-scale sectional model Synchronous measurement of force and vibration

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Distributed reinforcement learning based framework for energy-efficient UAV relay against jamming

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Intelligent and Converged Networks 2021年第2期2卷 150-162页

作者： Weihang Wang Zefang Lv xiaozhen Lu Yi Zhang liang xiao Department of Information and Communication Engineering Xiamen UniversityXiamen 361005China Beijing Key Laboratory of Mobile Computing and Pervasive Device Beijing 100190China

Unmanned aerial vehicle(UAV)network is vulnerable to jamming attacks,which may cause severe damage like communication *** to the energy constraint,the source UAV cannot blindly enlarge the transmit power,along with the complex network topology with high mobility,which makes the destination UAV unable to evade the jammer by flying at *** maintain communication with a limited battery capacity in the UAV networks in the presence of a greedy jammer,in this paper,we propose a distributed reinforcement learning(RL)based energy-efficient framework for the UAV networks with constrained energy under jamming attacks to improve the communication quality while minimizing the total energy consumption of the *** framework enables each relay UAV to independently select its transmit power based on historical state-related information without knowing the moving trajectory of other UAVs as well as the *** location and battery level of each UAV need not be shared with other *** also propose a deep RL based anti-jamming relay approach for UAVs with portable computation equipment like Raspberry Pi to achieve higher and faster *** study the Nash equilibrium(NE)and the performance bounds based on the formulated power control *** results show that the proposed schemes can reduce the bit error rate(BER)and reduce energy consumption of the UAV network compared with the benchmark method.

关键词： unmanned aerial vehicles relay jamming reinforcement learning

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Tribological Behavior of TiAl-Multilayer Graphene-Ag Composites at Different Temperatures and Sliding Speeds

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Acta Metallurgica Sinica(English Letters) 2017年第3期30卷 193-200页

作者： Jia-liang Zou xiao-liang Shi Qiao Shen Kang Yang Yu-Chun Huang Ao Zhang Yu-Fu Wang Qiao-Xin Zhang School of Mechanical and Electronic Engineering Wuhan University of Technology Wuhan 430070 China

Tribological behavior of TiAl-multilayer graphene-Ag composites （TMACs） prepared by spark plasma sin- tering against a Si3N4 ball was investigated on a ball-on-disk high-temperature tribometer at different test temperatures and sliding speeds in this study. The test results showed that TMACs had the lower friction coefficient and less wear rate at 450 ℃-0.25 m/s, which was attributed to the formation of the high-strength and intact tribofilms on worn surface. At 450 ℃-0.25 m/s, during the sliding process, multilayer graphene （MLG） was ground out to form the high-strength skeletons on the wom surface of TMACs. Ag was migrated from the worn surface and combined with the MLG skeleton to form the high-strength and intact tribofilms. The high-strength and intact tribofilms were beneficial to lowering the friction coefficient for the lubricating effect of Ag and decreasing wear rate for the enhancing effect of MLG skeleton.

关键词： Solid lubricant additives Self-lubricating composites Self-lubricated Wear

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Paliurus(Paliureae,Rhamnaceae) from the Miocene of East China and its Macrofossil-based Phylogenetic and Phytogeographical History

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Acta Geologica Sinica(English Edition) 2014年第5期88卷 1364-1377页

作者： LI Xiangchuan WANG Haofei LENG Qin xiao liang GUO Junfeng HE Wenlong College of Earth Sciences and Resources & Key Laboratory of Western Mineral Resources and Geological Engineering of the Ministry of Education Chang'an University School of Earth Sciences & Key Laboratory of Mineral Resources of Western China Lanzhou University Laboratory of Terrestrial Environments Department of Science and TechnologyCollege of Arts and SciencesBryant UniversitySmithfieldRI 02917USA College of Geology and Environment Xian University of Science and Technology

The extant genus Paliurus Miller is divided into P. ramosissimus and P. spina-christi groups and is diagnostically characterized by distinctive orbicular-winged fruits with a trilocular （or often bilocular） ovary and basally triveined leaves with a subentire to serrate margin. Here, structurally preserved winged fruits and associated compressed leaves of Paliurus （Paliureae, Rhamnaceae） are reported from the Middle-Upper Miocene Shengxian Formation of Tiantai, Zhejiang, eastern China. The fruits can be identified as Paliurus microcarpa Xiang-Chuan Lisp. nov., the diagnostic characters of external morphology and anatomy of which differ from those of both extant and fossil generic members; the leaves can be designated as Paliurus sp. The species based on winged fruits, P. microcarpa, might represent an ancient intermediate link exclusively known across the P. ramosissimus and P. spina-christi groups, showing a closer affinity to the P. ramosissimus group based on the resemblant smaller fruits with a narrower wing, and to the P. spina-christi group based on the similar wing structure and texture, respectively. Morphological analyses of the present and previous fossil fruit records around the world indicate that diversification of Paliurus had begun in northern transpacific regions by the Late Eocene. The macrofossil records, i.e., fruits and leaves of Paliurus globally when projected on paleoenvironmental maps in view of changing continental positions through time （from Eocene to Miocene） display that the past distribution of the genus was much wider than the present and belongs to a tropical and warm temperate realm of the Northern Hemisphere. Therefore, the modern restricted disjunction in tropical and warm temperate regions of East Asia and South Europe （even eastwards West Asia） might represent glacial refugia for some of the generic ancient lineages to survive severe cold at least since the terminal Pliocene.

关键词： paleobotany systematics Paliurus microcarpa winged fruit phytogeography Middle-LateMiocene Zhejiang Province

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