Results 1 to 10 of about 30,929 (149)
Optical spectrum of the post-AGB Star HD56126 in the wavelength interval 4010-8790 Å Å [PDF]
Astrophysical Bulletin, 2007 The optical spectrum of the post-AGB star HD56126 identified with the infrared source IRAS07134+1005 is studied in detail using high spectral resolution observations (R = 25000 and 60000) performed with the echelle spectrographs of the 6-m telescope. A total of about one and a half thousand absorptions of neutral atoms and ions, absorption bands of C2,
V. G. Klochkova +3 more
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Measurement of the A-Value of the Intersystem Transition in Al II at 2670 Å: Å Progress Report [PDF]
International Astronomical Union Colloquium, 1984 Ratios of intensities of spectral lines produced in the radiative decay of collisionally-excited levels of atomic ions are versatile indicators of electron density in astrophysical plasmas when one of the lines involves a metastable level (see the review by Feldman 1981 and references therein). Radiative transition probabilities (A-values) and electron
B. Carol Johnson, H.S. Kwong
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Experimental study of failure behavior of disturbed zone around an opening in non-persistent jointed rock masses [PDF]
, 2017 2003-2004 > Academic research: refereed > Publication in refereed journalVersion of ...
Lin, P, Tang, CA, Wong, RHC, Zhou, WY
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基于InSAR数据分析四川盆地南部长宁页岩气区块地表形变场基本特征
Dizhen xuebao, 2022 近年来随着我国页岩气大规模开采，四川盆地南部活动构造相对稳定的地区出现了一系列微震和有感地震，甚至是破坏性地震。这些地震是否为工业开采所诱发，目前已有研究从时空相关性给出了一些统计推断，本文则从形变观测角度分析页岩气开采能否产生可以检测到的地面形变，以揭示形变信息与页岩气开采的关系，尝试为页岩气开采提供有效的监测手段。基于长波ALOS-2卫星雷达数据对长宁页岩气区块近两三年内的InSAR地表形变展开探测，检测页岩气大规模生产可能造成的地面形变及其基本特征，同时使用Sentinel ...
Yuxin Bao +7 more
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A study of elasticity deformation of polymethylene chain(聚亚甲基链的弹性形变研究)
Zhejiang Daxue xuebao. Lixue ban, 2001 本文采用旋转异构态模型，对聚亚甲基链受到无相变的弹性形变后的热力学性质进行研究，计算出在不同形变时聚亚甲基链体系的自由能、内能等热力学函数，同时还分析了应力与弹性形变的关系以及内能对弹性形变的贡献.
JIANGZhou-ting(姜舟婷) +2 more
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Gaoya dianqi, 2021 现有的保角变换都是基于二维空间的计算,未研究其在三维空间的可行性及映射规律。针对该问题,文中研究了保角变换在三维空间的适用性,并研究给出了地形边界的保角变换函数与实际地形参数之间的对应关系。文中研究了对称山体形状的保角变换公式,分别利用有限元软件和保角变换解析法对地形边界的空间电场进行仿真。结果表明:两者计算结果相对误差小于0.1%,二维对称地形的保角变换算法可以拓展成为三维空间旋转地形的模式。根据研究计算所得的结果,可以有规律地按照实际测量的山体形状参数去求得对应的保角变换函数 ...
李瑞芳 +5 more
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An improved moving particle semi-implicit method for dam break simulation
, 2014 Dam break is quite a common and hazard phenomenon in shipbuilding and ocean engineering. The objective of this study is to investigate dam break hydrodynamics with improved Moving Particle Semi-implicit method (MPS). Compared to traditional mesh methods,
Tan, M., Wu, Qiaorui, Xing, J.T.
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Gaoya dianqi, 2020 绕组变形是变压器内部的常见故障之一,严重威胁电力系统的安全运行。目前绕组变形检测均属于离线检测,无法准确定位变形故障;带电检测由于受现场复杂电磁环境的干扰,且无法进行变形故障定位。为有效提高绕组变形在线检测的准确性,本文提出了基于分布式光纤传感的变压器绕组变形故障定位方法。搭建内置分布式光纤连续式绕组模型模拟绕组变形,当绕组发生局部形变时,利用布里渊光时域反射计（BOTDR）,对光纤应变进行测量。实验结果表明,分布式光纤传感技术能够准确的实现绕组变形的故障定位,具有良好的应用前景。
杨照光 +5 more
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Study on Influences of Subway Construction on Neighboring Surface and Buildings [PDF]
, 2016 近年来，我国城市化进程加快，城市地铁建设发展迅猛，为缓解城市交通拥堵发挥了重要作用。然而，地铁大多位于城市繁华地区，地面建筑物林立，施工对周边建筑物所产生影响也表现得越来越突出。本文以厦门市轨道交通1号线工程为背景，在对实测变形监测资料详细分析的基础之上，研究了地铁施工引发周边建筑地基及地表变形的预测方法，总结了地铁施工引发周边建筑地基变形的影响因素与规律，提出了适用于厦门地区地铁施工对周边建筑物影响的控制指标及安全评估方法。主要研究内容及成果如下： （1）根据实测数据统计 ...
张佳
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Facial expression cloning optimization method based Laplace operator. [PDF]
, 2016 In view of the reality of facial expression cloning and efficiency of expression reconstruction, a novel method based on motion capture data is proposed.
Ge, X. +5 more
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