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Seismic Characteristics and Hydrocarbon Accumulation Associated with Mud Diapir Structures in a Superimposed Basin in the Southern South China Sea Margin

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Journal of Ocean University of China 2022年第4期21卷 861-875页

作者： QIAN Xing ZHANG Li WU Shiguo sun zhongyu LEI Zhenyu LUO Shuaibing Southern Marine Science and Engineering Guangdong Laboratory(Guangzhou) Guangzhou 511458China MLR Key Laboratory of Marine Mineral Resources Guangzhou Marine Geological SurveyGuangzhou 510075China Laboratory of Geophysics and Georeouce Institute of Deep-Sea Science and EngineeringChina Academy of ScienceSanya 572000China South Marine Science and Engineering Guangdong Laboratory(Zhuhai) Zhuhai 519000China University of China Academy of Sciences Beijing 100049China

Mud diapirs are significant structures often associated with hydrocarbon migration and accumulation as well as gas hydrate formation in sedimentary basins.A total of 30 mud diapirs were observed in the northwestern Zengmu Basin in the southern South China Sea based on 2D multichannel seismic *** structures are distributed along an NW-SE trend near the shelf break of the Kangxi depression in the Zengmu *** mud diapirs were divided into the following according to their vertical shapes,intrusion heights,and effusive activities:tortoise,piercing,and nozzle types,which represent different evolutionary stages of *** mud diapirs in the study area suggest that the driving forces behind the mud diapirs considerably exceed the rock rupture limit of the overlying *** formation can be divided into two steps:the accommodation of a large amount of mud in the Zengmu Basin and the movement of plastic mud induced by gravity-driven flow and regional tectonic *** seismic interpretations with analyses of the regional geology and tectonic subsidence,the current study proposes that rapid subsidence in the Kangxi depression sufficiently accommodated the vast amount of sediments deposited since the Middle Miocene,which provided favorable conditions for the growth of mud ***,the N-S directional stress field in the Zengmu Basin and the gravity slide northward along the southern slope of the depression further facilitated the development of mud diapirs since the late *** mud diapirs in the southern South China Sea margins were accompanied by the accumulation and release of overpressured fluid.

关键词： mud diapir genetic mechanism gravitational slide Zengmu Basin South China Sea

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pH value monitoring during human albumin purification with near infrared spectroscopy and chemometrics

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Journal of Innovative Optical Health Sciences 2018年第3期11卷 28-37页

作者： Qiaofeng sun zhongyu sun Fei Wang Lian Li Ronghua Liu Lei Nie Jiayue Wang Mingyu Wang Hengchang Zang School of Pharmaceutical Sciences Shandong University Wenhuaxi Road 44 Jinan 250012P.R.China School of Basic Medical Sciences Shandong University Wenhuaxi Road 44 Jinan 250012P.R.China Shandong Taibang Biological Products Limited Company No.14 East Hushan Road Taian 271000P.R.China

Human albumin(HA)is a very important blood product which requires strict quality *** precipitation is a key step which has a great effect on the quality of final ***,a new method based on quality by design(QbD)was proposed to investigate thefeasibility of realizing online quality control with the help of near infrared spectroscopy(NIRS)and *** pH value is the critical process parameter(CPP)in acid precipitationprocess,which is used as the end-point *** batches,a total of 74 samples of acidprecipitation process,were simulated in our *** batches were selected randomly as cali-bration set and remaining two batches as validation ***,the analysis based on materialinformation and three dfferent variable selection methods,including interval partial least squaresregression(iPLS),competitive adaptive reweighted sampling(CARS)and correlation coeficient(CC)were compared for eliminating irrelevant variables,Fimally,iPLS was used for *** quantitative model was built up by partial least squares regression(PLSR).Thevalues of determination coeficients(R^(2)_(C) and R^(2)_(P)),root mean squares error of prediction(RMSEP),root mean squares error of calibration(RMSEC)and root mean squared error of crossvalidation(RMSECV)were 0.969,0.953,0.0496,0.0695 and 0.0826,*** paired t test and repeatability test showed that the model had good prediction ability and *** results indicated that PLSR model could give accurate measurement of the pH value.

关键词： Near infrared spectroscopy human albumin acid precipition proces pH value chemometrics

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China Eyes New Energy Projects for Greener Development

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China Oil & Gas 2014年第3期21卷 37-39页

作者： sun zhongyu

China will launch a number of major projects to restructure its energy layout and achieve a greener development with cleaner *** country plans to push forward reform in energy production and consumption,and make energ... 详细信息

关键词：环保中国开发源项瞄准能源布局重大项目能源生产

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CNOOC Maintains Strong Growth Momentum Both at Home and Abroad

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China Oil & Gas 2014年第2期21卷 5-6页

作者： sun zhongyu Ludong University

Key statistical figures of Q1On April 22,CNOOC Limited announced its key operational statistics for the first quarter of *** this period of time,the company achieved a total net production of 108.1 million barrels of oil equivalent,representing a 15.5 percent increase year over *** company made five new discoveries and eight successful appraisal wells in offshore *** discovery of Bozhong 22-1 demonstrated great exploration potential of natural gas in Bohai buried hill at deeper zone;another discovery of Lingshui 17-2 marked a breakthrough of the company’s independent

关键词：中国海洋石油有限公司国内外长势统计数据

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UAVs as remote sensing platforms in plant ecology:review of applications and challenges

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Journal of Plant Ecology 2021年第6期14卷 1003-1023页

作者： zhongyu sun Xiaonian Wang Zhihui Wang Long Yang Yichun Xie Yuhui Huang Guangdong Open Laboratory of Geospatial Information Technology and Application Guangzhou Institute of GeographyGuangdong Academy of SciencesGuangzhou 510070China School of Geographical Sciences South China Normal UniversityGuangzhou 510631China Department of Geography and Geology Eastern Michigan UniversityYpsilantiMI 48197USA Guangdong Provincial Key Laboratory of Silviculture Protection and UtilizationGuangdong Academy of ForestryGuangzhou 510520China

Aims Unmanned aerial vehicles(UAVs),***,have recently emerged as cost-effective and flexible tools for acquiring remote sensing data with fine spatial and temporal *** provides a new method and opportunity for plant ecologists to study issues from individual to regional ***,as a new method,UAVs remote sensing applications in plant ecology are still *** needs of plant ecology research and the application development of UAVs remote sensing should be better *** This report provides a comprehensive review of UAV-based remote sensing applications in plant ecology to synthesize prospects of applying drones to advance plant ecology *** Findings Of the 400 references,59%were published in remote sensing journals rather than in plant ecology journals,reflecting a substantial gap between the interests of remote sensing experts and plant *** of the studies focused on UAV remote sensing’s technical aspects,such as data processing and remote sensing inversion,with little attention on answering ecological *** were 61%of studies involved community-scale *** and multispectral cameras were the most used sensors(75%).More ecologically meaningful parameters can be extracted from UAV data to better understand the canopy surface irregularity and community heterogeneity,identify geometrical characteristics of canopy gaps and construct canopy chemical assemblies from living vegetation *** cooperation between plant ecologists and remote sensing experts is needed to promote UAV remote sensing in advancing plant ecology research.

关键词： UAVs drones unmanned aircraft systems(UASs) plant ecology species identification community function

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Spatial Distribution Pattern and Han Subgroup Characteristics of Traditional Villages in Guangdong

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Journal of Landscape Research 2018年第1期10卷 25-32页

作者： YUAN Shaoxiong YIN Xiaoling XIONG Haixian sun zhongyu HUANG Guangqing Guangdong Open Laboratory of Geospatial Information Technology and Application Guangzhou Institute of Geography

A total of 126 traditional villages in Guangdong were selected for research to analyze their spatial distribution pattern, spatial autocorrelation, and Han subgroup characteristics through the spatial analysis with GIS. The results showed that the traditional villages in Guangdong were distributed compactly, which was similar to that in other provinces; on the prefecture-level city scale, they were mainly distributed in Meizhou, Qingyuan, Zhanjiang, and Zhaoqing, showing a central distribution; on the regional scale, they were mainly distributed in northern Guangdong and the Pearl River Delta, indicating an unbalanced distribution; their density of spatial distribution showed a significant difference with a provincial distribution density of 0.59 per thousand km^2 and the highest distribution density of 2.14 per thousand km^2; there were four gathering areas accommodating many traditional villages, namely Meizhou-Chaoshan area, Guangfo-Dongguan area, Leizhou in Zhanjiang, and Lianzhou in Qingyuan; the spatial distribution of traditional villages, which presented a pattern of hot spot—sub-hot spot—sub-cold spot—cold spot, had a significant global spatial autocorrelation, and areas in similar sizes were tending towards gathering; traditional villages in Guangdong belonged to the Cantonese-speaking group and Hakka-speaking group with a density of 0.59 per thousand km^2 and 0.48 per thousand km^2 respectively, and Han subgroup with the highest distribution density was the minority areas of 1.31 per thousand km^2, followed by Shaozhou dialect area with a density of 1.00 per thousand km^2.

关键词： Traditional villages Spatial distribution pattern Spatial autocorrelation Han subgroup distribution Guangdong

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低压配电网电弧故障电压差分检测方法

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中国电机工程学报 2023年第22期43卷 8674-8688页

作者：王玮徐丙垠孙中玉梁栋山东理工大学电气与电子工程学院山东省淄博市255049 山东大学电气工程学院山东省济南市250100

串联电弧故障电流大小与负荷电流相仿、电流波形与非线性负荷电流区分困难。相比之下,电弧电压特征受负荷类型影响较小,因此通过识别电弧电压更易建立统一故障检测判据。在分析电弧电压及上下游监测点电压特征的基础上,针对线路压降与... 详细信息

串联电弧故障电流大小与负荷电流相仿、电流波形与非线性负荷电流区分困难。相比之下,电弧电压特征受负荷类型影响较小,因此通过识别电弧电压更易建立统一故障检测判据。在分析电弧电压及上下游监测点电压特征的基础上,针对线路压降与故障电弧电压的辨识,提出了基于差分电压3、5、7谐波参数相似性测度的串联电弧故障识别方法;针对异步差分检测提出了基于相位信息的差分电压获取方法,该方法以下游监测点畸变系数越限作为检测启动条件,以双端监测点电压各周波的工频相位同步为依据以消除异步采样带来的误差。异步差分检测方法对监测设备无同步采样要求,对数据传输时延要求低,是一种电力物联网技术背景下的全新检测方法。仿真和实测结果表明,该方法可有效实现低压线路的串联电弧故障检测。

关键词：串联电弧故障电弧电压异步同相差分方波相似性测度电力物联网

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互联网使用对人力资本发展的影响研究

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人口与发展 2024年第6期30卷 140-151页

作者：李军孙中玉湖南师范大学商学院湖南长沙410081 湖南师范大学数学与统计学院湖南长沙410081

研究基于2014年、2016年与2018年的中国家庭追踪调查(CFPS)数据,实证分析了互联网使用对认知能力和非认知能力的影响。研究显示:互联网的使用显著提高了个体的认知能力和非认知能力,但对认知能力的提升效果要强于非认知能力。使用互联... 详细信息

研究基于2014年、2016年与2018年的中国家庭追踪调查(CFPS)数据,实证分析了互联网使用对认知能力和非认知能力的影响。研究显示:互联网的使用显著提高了个体的认知能力和非认知能力,但对认知能力的提升效果要强于非认知能力。使用互联网通过促进教育投资、提高生活满意度影响认知能力,但通过改善家庭关系、吸收网络文化影响非认知能力。使用互联网对能力的提升效果除了在母亲教育程度较高的个体中更明显外,在不同的性别和家庭经济状况中并不存在显著的差异,这反映了使用互联网具有较好的包容性。最后,在非认知能力的不同维度中,互联网使用只对外向性和开放性有显著的影响,而对其他维度的影响并不显著,因此在整体上互联网使用对非认知能力提升效果要弱于认知能力。

关键词：互联网使用人力资本认知能力非认知能力

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天然气水合物降压开采中海床沉降特征及其影响因素

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中南大学学报（自然科学版） 2022年第3期53卷 1033-1046页

作者：孙金吴时国朱林奇刘艳锐孙中宇中国科学院深海科学与工程研究所海底资源与探测技术重点实验室海南三亚572000 南方海洋科学与工程广东省实验室(珠海) 广东珠海519080

为计算天然气水合物降压开采过程中的海床沉降量,考虑水合物分解、气水两相渗流、多孔介质导热和传质传热、沉积物变形等多物理场耦合作用,采用Duncan-Chang模型描述水合物层的变形破坏特征,建立天然气水合物降压开采过程中的渗流场-温... 详细信息

为计算天然气水合物降压开采过程中的海床沉降量,考虑水合物分解、气水两相渗流、多孔介质导热和传质传热、沉积物变形等多物理场耦合作用,采用Duncan-Chang模型描述水合物层的变形破坏特征,建立天然气水合物降压开采过程中的渗流场-温度场-变形场三场耦合模型,并基于有限元法进行求解。研究结果表明:在地温梯度影响下,降压开采时水合物层下部的水合物分解速率较快,其分解范围大于上部的分解范围;水合物分解前缘处的垂向有效应力随分解后力学参数的改变发生突变;水合物降压开采时的海床沉降主要由水合物分解导致的水合物层切线弹性模量、强度以及孔隙压力降低诱发,地层最大沉降位于开采井附近水合物层与上覆地层的界面处,而海床面处的沉降最大值位于开采井处。海床沉降与井底压力、水合物层渗透率、初始切线弹性模量、水合物层厚度等因素有关;井底压力越小、水合物层厚度越大,海床沉降量越大;水合物层渗透率越高,地层孔隙压力耗散越快,海床沉降越明显;水合物层初始切线弹性模量越大,海床沉降量越小。

关键词：天然气水合物降压开采海床沉降量水合物分解多场耦合模型

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TN-C-S系统双突变量电流分离漏电保护方法

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电力系统保护与控制 2022年第15期50卷 168-177页

作者：梁栋王玮孙中玉徐丙垠翟国亮山东理工大学电气与电子工程学院山东淄博255000 山东大学电气工程学院山东济南250000

针对低压配网TN-C-S系统固有剩余电流大、多级剩余电流漏电保护难以投入的问题,提出一种基于剩余电流和不平衡电流突变向量的电流分离漏电保护方法。首先,分析TN-C-S系统剩余电流成分,提出负荷投切不影响剩余电流向量与不平衡电流向量之... 详细信息

针对低压配网TN-C-S系统固有剩余电流大、多级剩余电流漏电保护难以投入的问题,提出一种基于剩余电流和不平衡电流突变向量的电流分离漏电保护方法。首先,分析TN-C-S系统剩余电流成分,提出负荷投切不影响剩余电流向量与不平衡电流向量之比M,而单相接地故障发生时刻会导致M值突变。其次,利用低压配网负荷投切频繁的特点连续更新M值,实时计算系统漏电流突变幅值,以漏电流突变幅值越限作为故障判据。仿真和实测数据表明,所提方法对50 mA以上漏电故障的正确识别率达99%以上,变压器出口处可靠动作阈值可低至70 mA,能够满足TN-C-S系统多级漏电保护的灵敏度要求。

关键词：漏电保护电流分离剩余电流不平衡电流双突变量

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