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Plasma Science and Technology 2019年第5期21卷 142-150页

作者： qinghua huang Lin XIONG Xiaolong DENG Zhan SHU Qiang CHEN Bing BAO Mingli CHEN Qing XIONG State Key Laboratory of Power Transmission Equipment&System Security and New Technology Chongqing UniversityChongqing 400044People's Republic of China College of Aerospace Scie nee and En gineering National University of Defense TechnologyChangsha 410073People's Republic of China Fujian Provincial Key Laboratory of Plasma and Magnetic Resonance Department of Electronic ScienceInstitute of Electromagnetics and AcousticsXiamen UniversityXiamen 361005People's Republic of China Chongqing Landscape and Gardening Research Institute Chongqing 401329People's Republic of China State Grid Longchang Electric Power Supply Branch Longchang 642150People's Republic of China

In this work,the super-hydrophobic(SH)surface was prepared through chemical vapor deposition process by an argon atmospheric pressure plasma jet source with HMDSN(hexamethyldisilazane)as the polymerization *** synthesized organosilicon(SiOxCyHz)thin films with water contact angle over 160°and sliding angle below 5°,were able to be *** and XPS analysis indicates a large number of hydrocarbon compositions were polymerized in the thin films enduing the latter very-low surface free *** shows the SH films display micro-nanostructure and with high degree of averaged surface roughness 190 nm evaluated by AFM *** experiments under controlled low-temperature and moisture conditions,the prepared SH surface exhibits good anti-icing *** prolonging freezing time was achievable on the SH thin films for both static and sliding water *** investigation demonstrates the anti-icing potentials of SH surface prepared through low-cost simple atmospheric-pressure plasma polymerization process.

关键词： hydrophobicity anti-icing atmospheric-pressure plasma polymerization

Microfossils and molecular records in oil shales of the Songliao Basin and implications for paleo-depositional environment

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Science China Earth Sciences 2009年第10期52卷 1559-1571页

作者： FENG ZiHui FANG Wei WANG Xue huang ChunYan HUO QiuLi ZHANG JuHe huang qinghua ZHANG Lei School of Earth and Space Sciences Peking UniversityBeijing 1000871China Exploration and Development Research Institute PetroChina Daqing Oilfield Company Ltd.Daqing 163712China

Several oil shale beds, over 10 m thick, occur at the base of the first member of the Upper Cretaceous Qingshankou Formation (K2qn1) in the Songliao Basin. They act both as excellent source rocks for conventional oil and as potential oil deposit for shale oil production. Here we combine micropaleon-tology with organic geochemistry to investigate the paleo-depositional environment and organic source characteristics of the oil shales and black shales. Our results indicate that algal remains are dominant microfossils in K2qn1 oil shales, and their relatively high abundance suggests a major algal thriving event during the oil shale deposition. The presence of fresh water and brackish water species, Sentusidinium, Vesperopsis and Nyktericysta, and marine or brackish water deltaic and lagoonal species such as Kiokansium and Dinogymniopsis demonstrate that this paleo-continental lake was influenced by marine transgressions at the time of K2qn1 oil shale formation. The extremely low pristine/phytane ratios, relatively high abundance of gammacerane and 4-methyl steranes, and low δ 13C values of C14-C37 n-alkanes in the oil shale organic extracts indicate the deposition of oil shales in anoxic and highly stratified water columns and the significant contribution of lacustrine algae to sedimentary organic matter. High molecular-weight paraffinic hydrocarbons with unusually high abundance of nC43, nC45, and nC47 may be related to special algal species associated with marine transgression events. The giant water body of Songliao paleo-lake and the change in the organic and chemical environment (such as nutrition source and water column salinity) associated with seawater transgression into the lake are among the most important reasons for oil shales in the Songliao Basin being different from mudstone and oil shale in other rifted basins.

关键词： Songliao Basin oil shale micro-fossil molecular fossil alga thrive event

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Complex dynamics of repeating and river-blocking landslides in Jiangda during 2018

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Earthquake Science 2021年第1期34卷 3-14页

作者： Wenying Li Yong Zhang Yueyi Xu Xujun Zheng Rongjiang Wang Jinrong Su Guixi Yi qinghua huang School of Earth and Space Sciences Peking UniversityBeijing 100871China GFZ German Research Center for Geosciences Potsdam 14461Germany Sichuan Earthquake Agency Chengdu 61004China

Two large landslides successively blocked the Jinsha River at the same location in Jiangda Village on October 10 and November 3,2018,*** dynamic processes and possible interactions of the two landslides need to be studied to better understand the physical processes involved,and to provide information on future disaster *** investigated their force histories and sliding directions by inverting regional broadband *** scale of the October landslide was approximately three times that of the November *** October event revealed a particularly strong deceleration force,which may have been caused by a collision between the sliding mass and ground *** contrast,the November event had a relatively weaker deceleration force,indicating that it may have been gradually stopped by the landslide dam formed during the October *** sliding directions of the two landslides differed significantly in terms of both horizontal and vertical directions,indicating a change in their sliding *** conclude that unconsolidated materials at the top of the October landslide continued sliding along a curved slope during the November *** our seismic models of dynamic processes,both the October landslide and local background may have affected and even changed a subsequent landslide’s mechanism.

关键词： landslides waveform inversion friction non-tectonic earthquake inversion

The Chinese Urban-rural Dual Economic Structure Model and Analysis

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Asian Agricultural Research 2014年第1期6卷 18-23页

作者： Xiuchuan XU Shengping SHI qinghua huang College of Economics and Management Southwest University Agricultural Education Development Research Center

Based on the characteristics of urban-rural dual economic structure in China,we build a dynamic endogenous urban-rural dual economic model closely linked to China's reality,and carry out mathematical economics analysis of optimized conditions for urban and rural sectors. The main results show that:(i) The labor growth rate of urban-rural sectors must be greater than the time discount rate,or else there would be a vicious cycle of diminishing returns in the sectors;(ii) The accumulation rate of physical capital and human capital of urban-rural sectors,and the rate of technological progress,need to be greater than the corresponding depreciation rate plus the time discount rate,otherwise there would be a vicious cycle of diminishing returns in the sectors;(iii) The low accumulation rate in the rural sector,and the occurrence of labor outflow,human capital loss and lack of investment,will expand income gap between urban and rural areas,which is a reason for solidification of urban-rural dual economic structure.

关键词： Urban-rural dual economic structure Dynamic optimi

Seismic Activity and Fuzzy Comprehensive Evaluation of Crustal Stability in the Beijing Region

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Acta Geologica Sinica(English Edition) 1994年第1期68卷 1-13页

作者： huang qinghua, Ma Yinsheng, Institute of Geomechanics, C hinese Academy of Geological Science, Beijingand Song Xinchu Seismological Bureau of Zhejiang Province, Hangzhou, Zhejiang Institute of Geomechanics Chinese Academy of Geological Science Beijing China

This paper discusses the seismic activity in Beijing M unicipality and its adjacent areas (which are referred to as the Beijing region in the paper). By using fuzzy mathematics, the factors controlling regional crustal stability are transformed into fuzzy information and then a model of fuzzy diagnosis is established. A fuzzy comprehensive evaluation of regional crustal stability in the Beijing region is made according to the seismic and geological conditions of the region.

关键词： fuzzy mathematics regional stability Beijing

基于贝叶斯方法的二维大地电磁尖锐边界反演研究

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地球物理学报 2018年第8期61卷 3420-3434页

作者：周思杰黄清华北京大学地球与空间科学学院北京100871

针对常规大地电磁(Magnetotelluric,MT)反演方法对电阻率异常体边界不太敏感的问题,本文尝试基于贝叶斯理论开展二维大地电磁电阻率尖锐边界反演研究.在反演中,模型参数由边界位置及内部电阻率组成,通过贝叶斯理论将模型参数与数据相联... 详细信息

针对常规大地电磁(Magnetotelluric,MT)反演方法对电阻率异常体边界不太敏感的问题,本文尝试基于贝叶斯理论开展二维大地电磁电阻率尖锐边界反演研究.在反演中,模型参数由边界位置及内部电阻率组成,通过贝叶斯理论将模型参数与数据相联系,采用Markov Chain Monte Carlo(MCMC)的Metropolis-Hastings(MH)方法对后验概率密度函数(Posteriori Probability Density,PDD)进行采样.采样过程中无罚值函数约束,完全以数据自身所包含的信息对模型进行约束,同时与有限约束进行比较,并考虑不同起始采样点对结果的影响.以接受率为参考,用模型算例说明MH方法中建议分布函数选择的重要性.当模型参数间相关性较弱时,使用边缘概率分布对采样结果进行分析.该方法能给出模型参数的分布范围,并给出该模型参数范围对应的数据范围.通过与已知模型的对比及数据拟合情况分析检验了该反演方法的有效性.该方法有助于提高大地电磁尖锐边界反演的分辨能力.

关键词：贝叶斯尖锐边界大地电磁反演接受率

Logical Framework,Path Selection and Mechanism Design for Cultivation of New Type Professional Farmers

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Asian Agricultural Research 2013年第10期5卷 125-129,132页

作者： Guangying LIU Jianfeng ZHANG Yingliang ZHANG qinghua huang College of Economics and Management Southwest University Business and Trade Department of Rongchang Campus Southwest University

New type professional farmers are farmers who possess certain resources and capitals,have certain extent of spirit of entrepreneurship,and are fully capable of obtaining and allocating resources related to agricultural production and management,and engaged in agricultural production and management for obtaining average *** of new type professional farmers should be promoted in the process and at the background of"coordinated development of industrialization,informationization,urbanization and agricultural modernization".It should establish a proper cultivation subject system consisting of government,enterprises,rural communities and nonprofit *** on multiple motive forces,efforts should be concentrated on cultivating those farmers with enterprising,highly innovative and learning ability,to guide traditional farmers to change into learning,enterprising and innovative *** addition,cultivation of new type professional farmers must rely on farmer education and training,modern agricultural development,increase in agricultural comparative advantage,innovation of rural management system and mechanism,multiple types of agricultural operation on a fairly large scale,as well as construction and regulation of new rural ***,it is recommended to provide system guarantee from long-term input mechanism of new type professional farmer education and training,incentive and restrictive mechanism of new type professional farmer cultivation,and construction of favorable environment for agricultural entrepreneurship.

关键词： New type professional farmers Logical framework Pa

Model Equilibrium and Empirical Study of Rural Labor Transfer

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Asian Agricultural Research 2013年第5期5卷 127-130,134页

作者： qinghua huang Xiuchuan XU Ming ZHANG Yue ZHAO School of Economic & Management Southwest University

We establish the two-sector economy model including the urban sector and the rural sector, derive the labor demand curve of the urban sector and rural sector under the condition of balanced production decisions with benefit maximization, and analyze the labor flow when in the short-term or long-term two-sector economic equilibrium. The results show that rising wages caused by short-term internal and external impact increases the pressure on the employment in two sectors, and the urban sector is difficult to absorb the surplus labor of the rural sector. However, under the conditions of free flow of factors and fully competitive market, the wage variation arising from the long-term endogenous evolution, leads to inversely proportional relationship between the demand for labor in the urban and rural sectors, which is conducive to the transfer of rural labor force. Based on microeconomic survey data of labor flow in urban-rural coordination experimental zones in Chongqing City, this paper makes an empirical study of the main factors having a short-term impact on the labor transfer, and the results show that education level and the opportunity to participate in the training are important factors.

关键词： Labor transfer Two-sector economy model Equilibriu

滇西南地区南汀河断裂带三维深部电性结构及其孕震环境

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地球物理学报 2018年第11期61卷 4504-4517页

作者：叶涛黄清华陈小斌北京大学地球物理学系北京100871 中国地震局地质研究所地震动力学重点实验室北京100029

南汀河断裂带为滇西南地区活动断裂体系中规模最大的一条北东向断裂,其构造活动及地震危险性一直备受关注.本文基于覆盖云南境内南汀河断裂带的大地电磁测深宽频带阵列数据,利用大地电磁三维反演解释技术,首次获得了南汀河断裂带的精细... 详细信息

南汀河断裂带为滇西南地区活动断裂体系中规模最大的一条北东向断裂,其构造活动及地震危险性一直备受关注.本文基于覆盖云南境内南汀河断裂带的大地电磁测深宽频带阵列数据,利用大地电磁三维反演解释技术,首次获得了南汀河断裂带的精细三维深部电性结构.在上地壳深度,南汀河断裂带西南段与中段的电性结构表现出沿构造走向的高导条带特征,北东段表现为高阻结构.该高阻结构可能为临沧—勐海花岗岩体的电性反映,指示南汀河断裂可能未切穿该花岗岩带.在中下地壳深度,南汀河断裂带西南段存在大范围高导层,北东段则表现为整体性的高阻地壳,因此南汀河断裂北东段可能具有发生强震的介质结构背景.南汀河断裂带西南段的耿马地震区深部呈现北东向与北北西向的"X"型高导构造样式,该高导结构以南存在一个显著高阻异常体,1988年耿马M_S7.2地震以及2015年沧源M_S5.5级地震均发生于该高阻体与"X"型高导条带的电性边界.青藏高原东南缘绕东构造结流入滇西地区的中下地壳流可能受到南汀河断裂北东段中下地壳高阻体的阻挡而呈分流式分布于保山地块以及澜沧江断裂以东.

关键词：南汀河断裂带大地电磁测深(MT) 2015沧源地震 1988耿马地震中下地壳流