有限温度下光频支声子-磁振子相互作用对磁振子寿命的影响

在二维复式正方Heisenberg铁磁系统的基础上建立了磁振子-声子相互作用模型.利用松原格林函数理论研究了系统的磁振子寿命,计算了布里渊区的主要对称点线上的磁振子衰减的变化曲线,比较了磁性离子的与非磁性离子的光频支声子对磁振子衰减的影响以及各项参数的变化和温度对磁振子衰减的影响.发现光频支声子-磁振子耦合对磁振子衰减起主要作用,尤其是纵向光频支声子对磁振子衰减起更大的作用,并且非磁性离子的光频支声子对磁振子衰减的作用比磁性离子的光频支声子对磁振子衰减的作用更显著.根据关系式-Im∑^*(1)(k)=/(2τ)可以对磁振子寿命进行判断. 关键词： 光频支声子-磁振子相互作用 磁振子衰减 磁振子寿命 绝缘复式正方铁磁体系统     

开源框架下妈祖祖庙虚拟现实导览系统的构建

在深入分析妈祖祖庙虚拟旅游的需求,明确以妈祖文化和建筑特色的“真实性”体验作为其虚拟现实(virtual reality, VR)导览出发点的基础上,建立妈祖祖庙区域“空-地-室外-室内”一体化的720°全景数据采集方案。并以手机盒子作为VR展示,基于Marzipano、A-Frame等开源框架与技术,构建妈祖祖庙虚拟现实导览系统,实现Web端和移动端的妈祖祖庙真实VR旅游及导览互动。实验表明：较传统的VR展示系统,本系统能够完成祖庙区域从空中到地面,从室外到室内的精细化全景展现,可实现妈祖祖庙区域720°全方位可视化;本系统建模简单,适配性强,成本低,可利用便携式VR设备实现Web端、手机端的VR旅游。     

南宋临安城寺庙分布研究

南宋临安城存在三种主要寺院：佛寺、道观和民间信仰。其分布特征主要是分布集中和地域差异，集中分布区为：南山区、北山区、吴山区、城西北区和灵隐区，这五个区的寺庙种类和功能均存在明显的差异。这种分布格局与历史地理、官府城市规划、城市形态、居住区人群、寺院功能等各要素有着极其密切的关系。     

北宋家庙、祠堂与谱牒之考论

家庙祭祀和谱牒一直以来都是贵族的特权。但在北宋，呈现出平民化特征，出现了民间家庙祭祀和私谱。文章主要从两者之间的关系探讨民间家庙和私谱出现原因及影响，如形成了新型的宗法组织，国家政治权力的下移和孝文化的加强。     

福建涵江霞徐妈祖信仰调查

简述福建涵江传播妈祖信仰的历史背景。通过对涵江最具代表性的妈祖庙霞徐天妃宫的田野调查,结合相关文献,描述该妈祖庙的历史与现状,并探讨涵江霞徐妈祖信仰的一些特色。     

Microanalysis of blue pigments from the Ptolemaic temple of Hathor (Thebes), Upper Egypt: a case study

The aim of the present work was to characterize blue pigment samples collected from the Ptolemaic temple of Hathor (Thebes), the western bank of Luxor, Upper Egypt. The characterization of the examined pigments was carried out by means of optical microscopy, scanning electron microscopy equipped with an energy dispersive X‐ray detector, micro X‐ray fluorescence spectrometry and Fourier transform infrared spectroscopy. On the basis of the chemical composition and microstructure of the samples, the blue pigments were identified as Egyptian blue (cuprorivaite, CaCuSi₄O₁₀). Moreover, the micro X‐ray fluorescence analysis revealed significant quantities of lead in the glass phase suggesting that a leaded bronze scrap was used to produce the pigment. The optical examination of the paint layers showed that the pigments were applied on a thin layer consisting of gypsum (CaSO₄?2H₂O) and dolomite (CaMg(CO₃)₂). In addition, some pigment samples showed discoloration mainly in the form of green and black hues. The obtained results helped in improving our knowledge about some painting materials used during the Ptolemaic era of ancient Egypt. Copyright © 2012 John Wiley & Sons, Ltd.     

Multispectroscopic studies for the identification of archaeological frankincense excavated in the underground palace of Bao'en Temple,Nanjing: near infrared,midinfrared, and Raman spectroscopies

Five resinous incense materials excavated from the underground palace of Bao'en Temple, Nanjing, were studied by a multianalytical approach of near infrared, midinfrared, and Fourier transform Raman spectroscopies. By comparing the multispectroscopic features of five specimens, these incense materials were identified to the same substance. Subsequent analysis and comparison of the ancient incense materials and three modern reference specimens were carried out, and the results indicated that the excavated incense materials were frankincense, with its major component of triterpenoids. This work performs, for the first time, a comprehensive spectroscopic study for the Chinese excavated incense materials, demonstrating that a combined use of near infrared, midinfrared, and Fourier transform Raman spectroscopies is an efficient technique to identify an excavated incense. Copyright © 2012 John Wiley & Sons, Ltd.     

基于数值模式的风场时空变化特征的统计分析

统计分析风场时空变化的特征,掌握其变化规律,可以提高风场预报的准确性。利用WRF模式对大气状态进行模拟,优化配置物理过程参数化方案,采用多层嵌套、双向反馈。以2 h为时间间隔的风场状态变化作为统计的风差样本,重点关注超过规定阈值大小的显著风差样本的分布,将风差样本标注在地图上,制作显著风差样本图。统计了显著风差样本数量在一天中的累积分布、风差样本的大小在垂直方向的分布,以及风场状态在各个高度层之间的差别。选择银川河东机场区域作为WRF模拟区域,对该区域一年的风差样本进行统计分析。结果表明:复杂地形条件下,不同区域风场变化的剧烈程度有很大的差别,但由同一因素引起的显著风差样本的变化趋势是一致的;风场时空变化的剧烈程度随着高度的增加而减弱。     

羊祜庙考略

羊祜是中国古代著名人物,他有仁爱之心,施仁政,清正廉洁、品格高尚,为西晋统一全国做出重大贡献。羊祜崇拜属英雄圣哲类崇拜,但由于最高统治阶级在政治思维和政治伦理观上的侧重,羊祜崇拜同绝大多数英雄圣哲类崇拜都没有像关帝崇拜那样发展起来,其祠庙仅在山东新泰、湖北襄阳以及江苏、浙江的一些地区有零星分布。     

唐郑畋《壁州新建山寺记》及其文献价值

今四川省通江县文物管理所存有一宋代重刻碑，乃唐末名相郑畋撰《壁州新建山寺记》。文章可廓清郑畋卒年、卒地、郑凝绩任刺史的情况及纠正前人记《壁》文所作时间的错误。