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Oxygen and Hydrogen Isotopes of Waters in the Ordos Basin,China:Implications for Recharge of Groundwater in the North of Cretaceous Groundwater Basin

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Acta Geologica Sinica(English Edition) 2009年第1期83卷 103-113页

作者： yang yuncheng SHEN Zhaoli WENG Dongguang HOU Guangcai ZHAO Zhenhong WANG Dong PANG Zhonghe Institute of Mineral Resources China Academy of Geological Sciences Beijing 100037 China China University of Geosciences Beijing 100083 China Xi＇an Institute of Geology and Mineral Resources Xi＇an 710054 China China Geological Survey Beijing 100011 China Institute of Geology and Geophysics the Chinese Academy of Sciences Beijing 100029 China

Hundreds of precipitation samples collected from meteorological stations in the Ordos Basin from January 1988 to December 2005 were used to set up a local meteoric water line and to calculate weighted average isotopic compositions of modern precipitation. Oxygen and hydrogen isotopes, with averages of-7.8‰ and -53.0‰ for δ^18O and δD, respectively, are depleted in winter and rich in spring, and gradually decrease in summer and fall, illustrating that the seasonal effect is considerable. They also show that the isotopic difference between south portion and north portion of the Ordos Basin are not obvious, and the isotope in the middle portion is normally depleted. The isotope compositions of 32 samples collected from shallow groundwater （less than a depth of 150 m） in desert plateau range from -10.6‰ to -6.0‰ with an average of-8.4‰ for δ^18O and from -85‰ to -46‰ with an average of-63‰ for δD. Most of them are identical with modern precipitation. The isotope compositions of 22 middle and deep groundwaters （greater than a depth of 275 m） fall in ranges from -11.6‰ to -8.8‰ with an average of -10.2‰ for δ^18O and from -89‰ to -63‰ with an average of -76‰ for δD. The average values are significantly less than those of modern precipitation, illustrating that the middle and deep groundwaters were recharged at comparatively lower air temperatures. Primary analysis of ^14C shows that the recharge of the middle and deep groundwaters started at late Pleistocene. The isotopes of 13 lake water samples collected from eight lakes define a local evaporation trend, with a relatively flat slope of 3.77, and show that the lake waters were mainly fed by modern precipitation and shallow groundwater.

关键词： groundwater lake water oxygen and hydrogen isotopes precipitation Ordos Basin

Distribution of δ^(34)S and δ^(18)O in SO_4^(2-) in Groundwater from the Ordos Cretaceous Groundwater Basin and Geological Implications

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Acta Geologica Sinica(English Edition) 2010年第2期84卷 432-440页

作者： yang yuncheng SHEN Zhaoli WEN Dongguang HOU Guangcai SHE Hongquan ZHAO Zhenhong WANG Dong LI Jingwen Institute of Mineral Resources Chinese Academy of Sciences Beijing 100037 China Xi＇an institute of Geology and Mineral Resources Xi＇an 710054 China China University ofGeosciences Beijing 100083 China China Geological Survey Beijing 100011 China

The Ordos Cretaceous Groundwater Basin, located in an arid-semiarid area in northwestern China, is a large-style groundwater basin. SO4^2- is one of the major harmful components in groundwater. Dissolved SO4^2- concentrations, and δ^34S-SO4^2- and δ^18O-SO4^2- in groundwater from 14 boreholes and in gypsum from aquifer were analyzed. Results show that SO4^2- in shallow groundwaters originates from precipitation, sulfide oxidation, and dissolution of stratum sulphate, with a big range of δ^34S values, from -10.7‰ to 9.2‰, and addition of SO4^2- in deep groundwater results from dissolution of stratum sulphate, with bigger δ^34S values, from 7.8‰ to 18.5‰, compared with those in shallow groundwater. This research also indicates that three types of sulphate are present in the strata, and characterized by high δ^34S values and high δ^18O values-style, high δ^34S values and middle δ^18O valuesstyle, middle δ^34S values and low δ^18O values-style, respectively. The δ^34S-SO4^2- and δ^18O-SO4^2- in groundwater have a good perspective for application in distinguishing different groundwater systems and determining groundwater circulation and evolution in this area.

关键词： sulphate sulfide sulfur isotope oxygen isotope Ordos Groundwater Basin

Groundwater Systems and Resources in the Ordos Basin,China

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Acta Geologica Sinica(English Edition) 2008年第5期82卷 1061-1069页

作者： HOU Guangcai LIANG Yongping SU Xiaosi ZHAO Zhenghong TAO Zhengping YIN Lihe yang yuncheng WANG Xiaoyong Xi＇an Institute of Geology and Mineral Resources Xi＇an Shaanxi 710054 Institute of Karst Geology Chinese Academy of Geological Sciences Guilin Guangxi 541004 Institute of Water Resources and Environment Jilin University Changchun Jilin 130026

The Ordos Basin is a large-scale sedimentary basin in northwestern China. The hydrostratigraphic units from bottom to top are pre-Cambrian metamorphic rocks, Lower Paleozoic carbonate rocks, Upper Paleozoic to Mesozoic clastic rocks and Cenozoic deposits. The total thickness is up to 6000 m. Three groundwater systems are present in the Ordos Basin, based on the geological settings, i.e. the karst groundwater system, the Cretaceous clastic groundwater system and the Quaternary groundwater system. This paper describes systematically the groundwater flow patterns of each system and overall assessment of groundwater resources.

关键词： groundwater system circulation and evolution groundwater resources Ordos Basin

Adaptive Sensor-Fault Tolerant Control of Unmanned Underwater Vehicles With Input Saturation

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IEEE/CAA Journal of Automatica Sinica 2024年第4期11卷 907-918页

作者： Xuerao Wang Qingling Wang Yanxu Su yuncheng Ouyang Changyin Sun the School of Artificial Intelligence the Engineering Research Center of Autonomous Unmanned System Technologyand the Anhui Provincial Engineering Research Center for Unmanned System and Intelligent TechnologyMinistry of EducationAnhui UniversityHefei 230601China the School of Automation Southeast UniversityNanjing 210096China

This paper investigates the tracking control problem for unmanned underwater vehicles(UUVs)systems with sensor faults,input saturation,and external disturbance caused by waves and ocean *** active sensor fault-tolerant control scheme is ***,the developed method only requires the inertia matrix of the UUV,without other dynamic information,and can handle both additive and multiplicative sensor ***,an adaptive fault-tolerant controller is designed to achieve asymptotic tracking control of the UUV by employing robust integral of the sign of error feedback *** is shown that the effect of sensor faults is online estimated and compensated by an adaptive *** the proposed controller,the tracking error and estimation error can asymptotically converge to ***,simulation results are performed to demonstrate the effectiveness of the proposed method.

关键词： Asymptotic stability fault-tolerant control input saturation robust integral of the sign of error unmanned underwater vehicle

Rare variants in FANCJ induce premature ovarian insufficiency in humans and mice

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Journal of Genetics and Genomics 2024年第2期51卷 252-255页

作者： Xi yang Shuting Ren Jialin yang yuncheng Pan Zixue Zhou Qing Chen Yunzheng Fang Lingyue Shang Feng Zhang Xiaojin Zhang Yanhua Wu State Key Laboratory of Genetic Engineering at School of Life Sciences Human Phenome InstituteObstetrics and Gynecology HospitalFudan UniversityShanghai 200438China Obstetrics and Gynecology Hospital Institute of Reproduction and DevelopmentState Key Laboratory of Genetic Engineering at School of Life SciencesFudan UniversityShanghai 200011China Human Phenome Institute Zhangjiang Fudan International Innovation CenterFudan UniversityShanghai 201203China Obstetrics and Gynecology Hospital Institute of Reproduction and DevelopmentFudan UniversityShanghai 200011China State Key Laboratory of Genetic Engineering at School of Life Sciences Obstetrics and Gynecology HospitalFudan UniversityShanghai 200438China National Demonstration Center for Experimental Biology Education School of Life SciencesFudan UniversityShanghai 200433China

Premature ovarian insufficiency(POI)is a severe female reproductive disorder that affects 1%of women in general populations(European Society for Human Reproduction and Embryology[ESHRE]Guideline Group on POI et al.,2016).An increasing prevalence up to 3.7%has been reported in a recent meta-analysis(Golezar et al.,2019).POl can lead to infertility or subfertility,as well as a range of complex complications suffering multi-organ systems,seriously threatening women's health and reducing the life *** contrast,POl is a representative heterogeneous disease with multiple *** more than 70 causative POI genes have been identified,the etiology of more than half of the POI patients is still ambiguous(Jiao et al.,2018).Unreported POI causative genes,therefore,remain to be identified.

关键词： insufficiency fertility

Landslide Displacement Prediction Based on Time Series and PSO-BP Model in Three Georges Reservoir, China

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Journal of Earth Science 2024年第3期35卷 1079-1082页

作者： Dexiang Gao Kou Li yuncheng Cai Tao Wen School of Geosciences Yangtze UniversityWuhan 430100China School of Science Yunnan Agricultural UniversityKunming 650201China

0 INTRODUCTION Landslides are one of the most frequent geological disasters in the world(Wen et al.,2020;Froude and Petley,2018),which have occurred frequently and widely distributed in China for a long *** landslides are essentially a complex multidimensional nonlinear dynamic system affected by its own geological conditions and external factors(Ma et al.,2021;Wang et al.,2019),including geotechnical characteristics,hydrogeology,geomorphologic conditions,climate,and weathering(Ma et al.,2020).The interaction of these factors makes the change of landslide displacement random,fuzzy and variable(Park and Michalowski,2017),and also brings great difficulties to the landslide displacement prediction(Ma et al.,2018).

关键词： landslide Landslide weathering

党内监督的政党净化功能:阶段性特征、净化边界与生成逻辑

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新视野 2020年第3期 58-64页

作者：杨云成中共北京市委党校党史党建教研部北京市100044

党的整体意志的统一性与党员个人意志的分散性之间的矛盾,决定了政党净化始终是党内监督的一项基本功能,但是这种政党净化随着党内外形势变化,呈现出了不同的阶段性特征。总结历史的经验和教训,政党净化只有限定在一定范围内,才能对党... 详细信息

党的整体意志的统一性与党员个人意志的分散性之间的矛盾,决定了政党净化始终是党内监督的一项基本功能,但是这种政党净化随着党内外形势变化,呈现出了不同的阶段性特征。总结历史的经验和教训,政党净化只有限定在一定范围内,才能对党和人民事业发展产生积极作用,否则就会发生"异化"。党内监督政党净化的边界集中体现为:党员、干部标准不能混淆于公民标准;党内监督的方式只能采用纪律处分、组织处理、组织处置等,不能将国家暴力机器引入党内;党内监督应当以发扬党内民主、维护内部团结为目的,不能简单采用惩办主义。

关键词：党内监督政党净化净化边界生成逻辑

“国家安全是安邦定国的重要基石”——学习习近平关于国家安全工作的重要论述

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党的文献 2020年第5期 36-43页

作者：杨云成中共北京市委党校(北京行政学院)党史党建教研部北京100044

当前,国家安全在党和国家工作全局中的重要性日益凸显,维护国家安全和社会稳定面临多重威胁和挑战。党的十八大以来,习近平就国家安全工作作出了一系列重要论述,是指导新时代国家安全工作的强大思想武器。新时代做好国家安全工作,一要... 详细信息

当前,国家安全在党和国家工作全局中的重要性日益凸显,维护国家安全和社会稳定面临多重威胁和挑战。党的十八大以来,习近平就国家安全工作作出了一系列重要论述,是指导新时代国家安全工作的强大思想武器。新时代做好国家安全工作,一要正确把握当前国家安全形势,将国家安全作为头等大事来抓。二要牢牢坚持党对国家安全工作的绝对领导,建立健全相关法律制度体系,加强国家安全干部队伍建设。三要全面贯彻落实总体国家安全观,要以人民安全为宗旨,以政治安全为根本,以经济安全为基础,以军事、文化、社会安全为保障,以促进国际安全为依托,要注意处理好内部安全与外部安全、国土安全与国民安全、传统安全与非传统安全、发展问题与安全问题、自身安全与共同安全的关系。四要坚持人民安全、政治安全、国家利益至上的有机统一,实现人民安居乐业、党的长期执政、国家长治久安。五要增强忧患意识,防范化解风险挑战。

关键词：习近平国家安全总体国家安全观忧患意识

Dynamic interactive bitwise meta-holography with ultra-high computational and display frame rates

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Opto-Electronic Advances 2024年第1期7卷 36-46页

作者： yuncheng Liu Ke Xu Xuhao Fan Xinger Wang Xuan Yu Wei Xiong Hui Gao Wuhan National Laboratory for Optoelectronics and School of Optical and Electronic Information Huazhong University of Science and TechnologyWuhan 430074China Optics Valley Laboratory Wuhan 430074China

Interactive holography offers unmatched levels of immersion and user engagement in the field of future *** of the substantial progress has been made in dynamic meta-holography,the realization of real-time,highly smooth interactive holography remains a significant challenge due to the computational and display frame rate *** this study,we introduced a dynamic interactive bitwise meta-holography with ultra-high computational and display frame *** our knowledge,this is the first reported practical dynamic interactive metasurface holographic *** spa-tially divided the metasurface device into multiple distinct channels,each projecting a reconstructed *** switching states of these channels were mapped to bitwise operations on a set of bit values,which avoids complex holo-gram computations,enabling an ultra-high computational frame *** approach achieves a computational frame rate of 800 kHz and a display frame rate of 23 kHz on a low-power Raspberry Pi computational *** to this methodology,we demonstrated an interactive dynamic holographic Tetris game system that allows interactive gameplay,color display,and on-the-fly hologram *** technology presents an inspiration for advanced dynamic meta-holography,which is promising for a broad range of applications including advanced human-computer interaction,real-time 3D visualization,and next-generation virtual and augmented reality systems.

关键词： interactive display meta-holography bitwise operation ultra-high frame rate