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Genesis and Characteristics of Miocene Deep-water Clastic Rocks in yinggehai and Qiongdongnan Basins,Northern South China Sea

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Acta Geologica Sinica(English Edition) 2021年第1期95卷 153-166页

作者： FAN Caiwei xu Changgui xu jie Zhanjiang Branch of China National Offshore Oil Corporation Ltd. ZhanjiangGuangdong 524057China School of Ocean Sciences China University of Geosciences(Beijing)Beijing 100083China

Various deep-water deposits developed in the yinggehai Basin and Qiongdongnan Basin(ying-Qiong Basin)in the northern South China Sea,making the two basins significantly hydrocarbon-producing areas and ideal for studying the genetic mechanism and sedimentary characteristics of deep-water clastic *** cores,image well logging,heavy mineral assemblages,and seismic data,we thoroughly studied the geometry,tectonic background,driving mechanism and source-to-sink process of deep-water deposits in the study *** results showed that:(1)there were five genetic mechanisms of deep-water clastic rock,i.e.,slides,slumps,debris flows,turbidity currents,and bottom currents.(2)The sliding deposits were distributed from the delta front to the continental slope *** slumping deposits were mainly distributed at the continental slope toe or the basin’s central area,far from the delta front The turbidity deposits were widely developed in the deep-water area,but with huge differences in *** bottom currents mainly reworked previous deposits far from the slope.(3)Slip and extension along the preexisting fault zone were the main structural factors that drive the axial channel formation at the slope foot.(4)The sand-rich gravity sediment flows in the ying-Qiong basin were primarily caused by the direct supply of terrigenous debris into the marine environment over the slope break.

关键词： deep-water sandstone genesis yinggehai and Qiongdongnan Basins

Intrinsic transverse relaxation mechanisms of polarized alkali atoms enclosed in radio-frequency magnetometer cell

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Chinese Physics B 2019年第9期28卷 385-390页

作者： Yang-ying Fu jie Yuan College of Advanced Interdisciplinary Studies National University of Defense Technology

The intrinsic transverse relaxation mechanisms of polarized alkali atoms enclosed in the radio-frequency magnetometer cell are *** intrinsic transverse relaxation rate of cesium atoms as a function of cell temperature is *** absorption of alkali atoms by the glass wall and the reservoir effect are the main error factors which contribute to the disagreements between theory and experiments.A modified relaxation model is presented, in which both the absorption of alkali atoms by the glass wall and the reservoir effect are *** study provides a more accurate description of the intrinsic transverse relaxation mechanisms of polarized alkali atoms, and enlightens the optimization of the cell design.

关键词： intrinsic transverse relaxation modified relaxation model absorption of alkali atoms reservoir effect

Generalized Toda Mechanics Associated with Loop Algebra L（Br）

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Communications in Theoretical Physics 2005年第3期43卷 407-412页

作者： YANGZhan-ying ZHAOLiu SHIKang-jie DepartmentofPhysics NorthwestUniversityXi＇an710069China DepartmentofPhysics NankaiUniversityTianjin300071China DepartmentofPhysics NorthwestUniversityXi＇an710069China

A class of generalization of Toda mechanics with long range interactions isconstructed in this paper. These systems are associated with the loop algebras L(B_r) in the sensethat their Lax matrices can be realized in terms of the c = 0 representations of the affine Liealgebras B_r~((1)) . We adopt a pair of ordered integers (m, n) to describe the Toda mechanicssystem when we present the equations of motion and the Hamiltonian structure. We also extract theclassical r matrix which satisfy the classical Yang-Baxter relation. Such generalizations willbecome systems with noncommutative variables in the quantum case.

关键词： toda many-body mechanics system poisson bracket r matrix

A New Class of Weights Adapted to Rough Singular Integrals and Marcinkiewicz Integrals

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Acta Mathematica Sinica,English Series 2009年第8期25卷 1275-1288页

作者： Chun jie ZHANG ying YOU School of Science Hangzhou Dianzi University Hangzhou 310018 P. R. China TDepartment of Mathematics Hanghzou Normal University Hangzhou 310036 P. R. China

In this paper, we introduce a new class of weights Ap （Rn） which retains many fine properties of the classical Muchenhoupt weights Ap （Rn）. While Ap （Rn） is too big a class to obtain the weighted norm inequalities for rough singular integrals and Marcinkiewicz integrals, our new class Ap （Rn） adapts well to these rough operators. As applications, we improve some known weighted estimates.

关键词： weighted estimates singular integral Marcinkiewicz integral

Determination of trace gadolinium by catalytic kinetic fluorimetry

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Rare Metals 2015年第8期34卷 595-599页

作者： Juan-Ping Chen Yu-ying Liu ying-jie Gao School of Chemical Engineering Shandong University of Technology

There was a significant catalytic effect of trace Gd(III) ions on the oxidative reaction of potassium persulfate with Saffron T in the acetic acid–sodium acetate buffer solution. Thus, a catalytic kinetic fluorimetry method for the determination of trace Gd(III) ions was established. The factors such as acidity, concentration of reagents, reaction time, and temperature as well as influence of coexisting ions were discussed. The optimum reaction conditions were established. The apparent rate constant and apparent activation energy of the reaction were determined. The linear range is 0.02–0.10 lgáml-1,and the detection limit is 7.27 9 10-4lgáml-1. This method was used for the determination of gadolinium in the samples of lanthanum acetate with RSD of 0.9 %–3.1 %.

关键词： Gadolinium Catalytic kinetic fluorimetry Saffron T

Changes in Extreme Events as Simulated by a High-Resolution Regional Climate Model for the Next 20-30 Years over China

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Atmospheric and Oceanic Science Letters 2012年第6期5卷 483-488页

作者： xu Ji-Yun SHI ying GAO xue-jie Zhejiang Climate Center Hangzhou 310017 China The Laboratory of Climate Study National Climate Center China Meteorological Administration Beijing 100081 China

In this paper, the changes in temperature and precipitation extremes over the next 20-30 years (2021-2050) in relative to the present day (1986-2005) under the Intergovernmental Panel on Climate Change (IPCC) Special Report on Emissions Scenarios (SRES) A1B scenario are analyzed based on a high-resolution climate change simulation performed by a regional climate model (the Abdus Salam International Center for Theoretical Physics (ICTP) RegCM3). The extreme indices of summer days (SU), frost days (FD), and growing season length (GSL) for temperature and simple daily intensity index (SDII), number of days with precipitation ≥10 mm d-1 (R10), and consecutive dry days (CDD) for precipitation are used as the indicators of the extremes. The results show that the indices simulated by RegCM3 in the present day show good agreement with the observed. A general increase in SU, a decrease in FD, and an increase in GSL are found to occur in the next 20-30 years over China. A general increase in SDII, an increase in R10 over western China, and a decrease in R10 in north, northeast, and central China are simulated by the model. Changes in CDD are characterized by a decrease in the north and an increase in the south and the Tibetan Plateau.

关键词： climate change regional climate model extreme events China

Effects of Cooling Rate and Component on the Microstructure and Mechanical Properties of Mg–Zn–Y Alloys

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Acta Metallurgica Sinica(English Letters) 2015年第1期28卷 7-14页

作者： Shuang Shao Yong Liu Chun-Shui xu ying-xuan xu Bin Wu Xiao-Shu Zeng Xian-Feng Lu Xiang-jie Yang Key Laboratory of Near Net Forming of Jiangxi Province Nanchang University

The microstructure and mechanical properties of Mg–6Zn–1Y and Mg–6Zn–3Y（wt%） alloys under different cooling rates were investigated. The results show that the second dendrite arm spacing（SDAS） of Mg–6Zn–1Y and Mg–6Zn–3Y is reduced by 32 and 30% with increasing cooling rates（Rc） from 10.2 to 23 K/s, which can be predicted using a empirical model of SDAS=68 R 0：45：45cand SDAS=73 R 0c, respectively. The compressive strength of both alloys increases with increasing the cooling rate, which is attributed to the increase of volume fraction（Vf） of secondary phases under high cooling rate. The interaction of the cooling rate and component with SDAS has been theoretically analyzed using interdependence theory.

关键词： Mg–Zn–Y alloys Microstructural characterization Compressive strength Cooling rate Interdependence theory

Identification of risk genes in Chinese nonobstructive azoospermia patients based on whole-exome sequencing

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Asian Journal of Andrology 2023年第1期25卷 66-72页

作者： Yu-Jun Liu Xin-jie Zhuang Jian-Ting An Hui Jiang Rong Li jie Qiao Li-ying Yan xu Zhi Center for Reproductive Medicine Department of Obstetrics and GynecologyPeking University Third HospitalBeijing 100191China National Clinical Research Center for Obstetrics and Gynecology Beijing 100191China Key Laboratory of Assisted Reproduction Peking UniversityMinistry of EducationBeijing 100191China Peking-Tsinghua Center for Life Sciences Peking UniversityBeijing 100191China Department of Urology Peking University Third HospitalBeijing 100191China Department of Andrology Peking University Third HospitalBeijing 100191China

Nonobstructive azoospermia(NOA)is a severe condition in infertile men,and increasing numbers of causative genes have been identified during the last few *** certain causative genes can explain the presence of NOA in some patients,a proportion of NOA patients remain to be *** study aimed to investigate potential high-risk genes associated with spermatogenesis in idiopathic NOA patients by whole-exome ***-exome sequencing was performed in 46 male patients diagnosed with ***,screening was performed for 119 genes known to be related to male ***,further screening was performed to determine potential high-risk causative genes for NOA by comparisons with 68 healthy male ***,risk genes with high/specific expression in the testes were selected and their expression fluctuations during spermatogenesis were *** frequency of cystic fibrosis transmembrane conductance regulator(CFTR)gene pathogenic variant carriers was higher in the NOA patients compared with the healthy *** risk genes that may be causes of NOA were identified,including seven genes that were highly/specifically expressed in the *** risk genes previously reported to be involved in spermatogenesis(MutS homolog 5[MSH5],cilia-and flagella-associated protein 54[CFAP54],MAP7 domain containing 3[MAP7D3],and coiled-coil domain containing 33[CCDC33])and three novel risk genes(coiled-coil domain containing 168[CCDC168],chromosome 16 open reading frame 96[C16orf96],and serine protease 48[PRSS48])were identified to be highly or specifically expressed in the testes and significantly different in the 46 NOA patients compared with 68 healthy *** study on clinical NOA patients provides further evidence for the four previously reported risk *** present findings pave the way for further functional investigations and provide candidate risk genes for genetic diagnosis of NOA.

关键词： cystic fibrosis transmembrane conductance regulator nonobstructive azoospermia potential risk genes spermatogenesis whole-exome sequencing

Skill Learning for Robotic Insertion Based on One-shot Demonstration and Reinforcement Learning

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International Journal of Automation and computing 2021年第3期18卷 457-467页

作者： ying Li De xu Research Center of Precision Sensing and Control Institute of AutomationChinese Academy of SciencesBeijing 100190China School of Artificial Intelligence University of Chinese Academy of SciencesBeijing 100049China

In this paper,an efficient skill learning framework is proposed for robotic insertion,based on one-shot demonstration and reinforcement ***,the robot action is composed of two parts:expert action and refinement action.A force Jacobian matrix is calibrated with only one demonstration,based on which stable and safe expert action can be *** deep deterministic policy gradients(DDPG)method is employed to learn the refinement action,which aims to improve the assembly ***,an episode-step exploration strategy is developed,which uses the expert action as a benchmark and adjusts the exploration intensity dynamically.A safety-efficiency reward function is designed for the compliant ***,to improve the adaptability with different components,a skill saving and selection mechanism is *** typical components are used to train the skill *** the trained models and force Jacobian matrices are saved in a skill *** a new component,the most appropriate model is selected from the skill pool according to the force Jacobian matrix and directly used to accomplish insertion ***,a simulation environment is established under the guidance of the force Jacobian matrix,which avoids tedious training process on real robotic *** and experiments are conducted to validate the effectiveness of the proposed methods.

关键词： Force Jacobian matrix one-shot demonstration dynamic exploration strategy insertion skill learning reinforcement learning