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Quantitative Estimation of Pipeline Slope Disaster Risk in China

International Journal of Disaster Risk Science 2023年第2期14卷 298-312页

作者： Yan Yan Jiaojiao Zhou Cheng Xie shuyao yin Sheng Hu Renchao Wang Key Laboratory of High-Speed Railway Engineering Ministry of Education/School of Civil EngineeringSouthwest Jiaotong UniversityChengdu610031China Institute of Geographic Sciences and Natural Resources Research Chinese Academy of SciencesBeijing100101China Pipe China South Branch Guangzhou510623China Shaanxi Key Laboratory of Earth Surface System and Environmental Carrying Capacity Northwest UniversityXi’an 710127China School of Computer Science and Engineering University of Electronic Science and Technology of ChinaChengdu611731China

China’s economic development is closely related to oil and gas resources,and the country is investing heavily in pipeline *** geological hazards seriously affect the long-term safe operation of buried pipelines,usually causing pipeline leakage,property and environmental losses,and adverse social *** ensure the safety of pipelines and reduce the probability of pipeline disasters,it is necessary to predict and quantitatively evaluate slope *** there has been much research focus in recent years on the evaluation of pipeline slope disasters and the stress calculation of pipelines under hazards,existing methods only provide information on the occurrence probability of slope events,not whether a slope disaster will lead to pipeline *** the 2015 Xinzhan landslide in Guizhou Province,China,as an example,this study used discrete elements to simulate landslide events and determine the risk level and scope for pipeline damage,and then established a pipe-soil coupling model to quantitatively evaluate the impact of landslide hazards for pipelines in medium-and high-risk *** results provide a reference for future pipeline disaster prevention and control.

关键词： China Coupled pipe-soil model Landslides Pipeline slope disasters Pipe stress Risk classification

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Chick chorioallantoic membrane model to investigate role of migrasome in angiogenensis

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Biophysics Reports 2023年第5期9卷 241-254页

作者： Cuifang Zhang Helen He shuyao yin Mingyi Gao Li Yu The State Key Laboratory of Membrane Biology Tsinghua University-Peking University Joint Centre for Life Sciences Beijing Frontier Research Center for Biological Structure Xiamen Cardiovascular Hospital Xiamen University

The development of the vascular system is essential for embryonic development, including processes such as angiogenesis. Angiogenesis plays a critical role in many normal physiological and pathological processes. It is driven by a set of angiogenic proteins, including angiogenic growth factors, chemokines,and extracellular matrix proteins. Among various animal model systems, the chorioallantoic membrane(CAM), a specialized and highly vascularized tissue of the avian embryo, has proven to be a valuable tool for analyzing the angiogenic potential of candidate cells or factors. In this protocol, we provide detailed procedures for establishing the CAM model to evaluate the function and mechanism of migrasomes in embryonic angiogenesis. This includes the CAM nylon mesh assay and CAM ex vivo sprouting assay to assess CAM angiogenesis, as well as the observation, purification, and delivery of migrasomes. Additionally, we describe the generation of T4-KO-m Cherry-KI embryos using the CRISPR system within the CAM tissue to investigate the role of migrasomes in angiogenesis.

关键词： Angiogenesis Chorioallantoic membrane (CAM) Chick CAM model

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“流氓”的悲歌——浅析王朔作品和王朔现象

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鸡西大学学报（综合版） 2008年第5期8卷 109-111页

作者：银书瑶新疆大学人文学院

王朔作品和王朔现象已经成为中国当代文学史上无法忽视的内容之一,拟通过对王朔作品和王朔现象的分析来揭示他们给中国当代文学带来的启示。

关键词：王朔作品王朔现象 “流氓”的悲歌

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基于地震动信号分析的地质灾害过程重构方法研究与应用

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工程地质学报 2021年第1期29卷 125-136页

作者：严炎崔一飞周开来尹述遥田鑫田继枫西南交通大学土木工程学院成都610031 清华大学水沙科学与水利水电工程国家重点实验室北京100084 西南交通大学高速铁路线路工程教育部重点实验室成都610031 西南交通大学陆地交通地质灾害防治技术国家工程实验室成都610031 中国地震局地球物理研究所北京100081

地质灾害启动及演进过程中对途经的村庄、植被、基础设施等均会造成不同程度的破坏,而深入研究灾害的演进过程有助于灾害预警和防治工作,能减少灾区人员伤亡、降低经济损失。然而由于地质灾害的强破坏性和突发性,使得现场的监测仪器和... 详细信息

地质灾害启动及演进过程中对途经的村庄、植被、基础设施等均会造成不同程度的破坏,而深入研究灾害的演进过程有助于灾害预警和防治工作,能减少灾区人员伤亡、降低经济损失。然而由于地质灾害的强破坏性和突发性,使得现场的监测仪器和设备易受灾害的影响,甚至被破坏,导致难以完整且准确地监测到灾害过程,这限制了对地质灾害过程的深入研究,因此亟需一种新的方法来进行灾害过程的重构。随着科技的发展,现有高精度地震仪能够记录伴随地质灾害而产生的地震动信号,并且已有不少研究者进行了基于地震动信号的灾害分析研究。基于现有研究的基础,本文提出一套基于地震动信号的地质灾害重构研究思路和方法体系:通过运用带通滤波器(BP-filter)、经验模态分解(EMD)、快速傅里叶变换(FFT)、短时傅里叶变换(STFT)、功率谱密度计算(PSD)等方法对灾害过程产生的地震动信号进行处理和分析,然后结合灾害现场调查结果进行对比分析以反演灾害的基本特征,进而与数值模拟结果进行耦合,最终实现灾害过程的重构。本文基于地震动信号对堰塞湖、滑坡、泥石流等不同灾种进行案例研究与分析,旨在为地质灾害演进过程的研究提供一种新的研究思路和方法体系。

关键词：地质灾害地震动信号信号处理与分析灾害过程重构

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30%TBP-正十二烷-1NHNO3体系中辐解强络合物性能研究

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核化学与放射化学 1983年第4期 281-290页

作者：尹淑瑶童天真原子能研究所

本实验证明,在辐照30％TBP-正十二烷-1N HNO3体系中,对金属有强保留作用的络合剂,除目前文献上普遍认为的二烷基酸性长链磷酸酯外,还存在另一类单烷基酸性长链磷酸酯。它具有比前者更强的对金属的保留能力,不易被碱所洗脱,又容易使萃取... 详细信息

本实验证明,在辐照30％TBP-正十二烷-1N HNO3体系中,对金属有强保留作用的络合剂,除目前文献上普遍认为的二烷基酸性长链磷酸酯外,还存在另一类单烷基酸性长链磷酸酯。它具有比前者更强的对金属的保留能力,不易被碱所洗脱,又容易使萃取体系产生乳化现象,因此它对萃取体系性能的恶化作用大于二烷基酸性长链磷酸酯。用GC-MS测定了这类单烷基酸性长链磷酸酯的分子量,并由此推测出了它们的分子式。

关键词：辐解 TBP 正十二烷络合剂 Hf指数

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Improved growth rate of anodized TiO2 nanotube arrays under reduced pressure field and light illumination

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Science Bulletin 2017年第5期62卷 332-338页

作者： shuyao Huo Zhen Xu Min yin Dongliang Yu Xiaoyuan Chen Hui Wang Li Tian Dongdong Li Shanghai Advanced Research Institute Chinese Academy of SciencesShanghai 201210China University of Chinese Academy of Sciences Beijing 100039China ShanghaiTech University Shanghai 201210China

The one-dimensional titanium oxide(TiO_2) nanotubes(TONT) can be rationally fabricated in the fluoridecontaining electrolyte by electrochemical anodization. The high-speed growth of TONT for elongated nanotubes is highly desirable because the undesirable chemical etching will induce ‘‘nanograss" on the top of nanotubes and restrain the continued elongation of nanotubes. Herein, the external fields were employed to accelerate the growth of TONTs and obtain the elongated TONT arrays. A growth rate up to 18 lm/h was achieved under the presence of reduced pressure(0.07 MPa) and UV light(365 nm) stimulation. The generation of longer nanotube arrays could be attributed to the applied fields, which facilitate timely gas pumping out and induce chemical equilibrium shift forward. The TONT films obtained under different parameters were subsequently employed as anodes for photoelectrochemical(PEC) water splitting. The photocurrent(at 0 V vs Ag/Ag Cl) of TONT electrode obtained under external fields represented a 50% enhancement compared with the photoanode produced by the conventional method.

关键词： Ti O2nanotube anodization Reduced pressure field Light stimulation Photoelectrochemical properties

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A MESHLESS METHOD OF A THIN PLATE

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Acta Mechanica Solida Sinica 2002年第3期15卷 244-258页

作者： Long shuyao Xiong Yuanbo Department of Engineering Mechanics Hunan University Changsha 410082 China

A meshless approach to analysis of arbitrary Kirechhoff plates bythe local boundary integral equation (LBIF) method is presented. Themethod combines the advantageous features of all the three meth- ods:the Galerkin finite element method (GFEM), the boundary elementmethod (BEM) and the element- free Galerkin method (EFGM). It is atruly meshless method, which means that the discretization is inde-pendent of geometric subdivision into elements or cells, but is onlyboundary integration, however over a local boundary cen- tered) overa domain in question.

关键词： thin plate local boundary integral equation method moving least squareapproximation

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Toward separation at source: Evolution of Municipal Solid Waste management in China

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Frontiers of Environmental Science & Engineering 2020年第2期14卷 1-3页

作者： Jianguo Liu shuyao Yu Yixuan Shang School of Environment Tsinghua UniversityBeijing 100084China

Municipal Solid Waste(MSW)management in China has been transitioning from a mixed collection and treatment system to a separated collection and treatment *** continuous rise of MSW treatment capacity and the optimization of technology structure provided basic facility support for China to promote MSW separation at *** preferred a four-type separation *** recycling should be enhanced to improve the efficiency and sustainability of recycling *** food waste is the main composition of MSW in China,20%-30%of the food waste diversion and land application could maximize the comprehensive environmental *** is to be the pillar technology in MSW separated treatment system in China.

关键词： Municipal Solid Waste Separation at source Recycling Biological treatment Incineration

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A reconstructed edge-based smoothed DSG element based on global coordinates for analysis of Reissner–Mindlin plates

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Acta Mechanica Sinica 2017年第1期33卷 83-105页

作者： Gang Yang De’an Hu shuyao Long State Key Laboratory of Advanced Design and Manufacturing for Vehicle Body College of Mechanical and Vehicle Engineering Hunan University Changsha 410082China

A reconstructed edge-based smoothed triangular element, which is incorporated with the discrete shear gap (DSG) method, is formulated based on the global coordinate for analysis of Reissner-Mindlin plates. A symbolic integration combined with the smoothing technique is implemented to calculate the smoothed finite element matrices, which is integrated along the boundaries of each smoothing cell. Numerical results show that the proposed element is free from shear locking, and its results are in good agreement with the exact solutions, even for very thin plates with extremely distorted elements. The proposed element gives more accurate results than the original DSG element without smoothing, and it can be taken as an alternative element for analysis of Reissner-Mindlin plates. The prominent feature of the present element is that the integration scheme is unified in the smoothed form for all of the finite element matrices.

关键词： Reissner-Mindlin plate DSG method Symbolic integration Smoothing technique Global coordinate Distorted element

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ELASTIC DYNAMIC ANALYSIS OF MODERATELY THICK PLATE USING MESHLESS LRPIM

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Acta Mechanica Solida Sinica 2009年第2期22卷 116-124页

作者： Ping Xia shuyao Long Hongxue Cui State Key Laboratory of Advanced Design and Manufacture for Vehicle Body Hunan University Changsha 410082 China College of Mechanics and Aerospace Engineering Hunan University Changsha 410082 China Department of Mechanical Engineering Hunan Institute of Engineering Xiangtan 411101 China

A meshless local radial point interpolation method （LRPIM） for solving elastic dy-namic problems of moderately thick plates is presented in this paper. The discretized system equation of the plate is obtained using a locally weighted residual method. It uses a radial basis function （RBF） coupled with a polynomial basis function as a trial function,and uses the quartic spline function as a test function of the weighted residual method. The shape function has the properties of the Kronecker delta function,and no additional treatment is done to impose essen-tial boundary conditions. The Newmark method for solving the dynamic problem is adopted in computation. Effects of sizes of the quadrature sub-domain and influence domain on the dynamic properties are investigated. The numerical results show that the presented method can give quite accurate results for the elastic dynamic problem of the moderately thick plate.

关键词： meshless method moderately thick plate local radial point interpolation method,dynamic analysis Newmark method

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