储层岩石表面接触角的不确定性研究

本文指出，储层岩石表面粗糙，非均质性及高的能量，使我们难以用接触角来量度它的润湿性质，由于储层岩石孔隙结构不符合毛管束模型，使得Laplace公式仅在表现接触角趋于2度或180度时可用于根据毛管压力曲线计算储层岩石的孔径分布，好在由于储层岩石表面粗糙使我们常常会遇到这一极端情况。     

“广义信息维”在首都圈地震中期预报中的应用

给出了“广义信息维”的计算公式和计算方法，研究了首都圈和周期地区的广义时间分维和华北地区的广义空间分维。结果表明，在该地区Ｍｓ≥５．３地震前０．５－３ａ，时间分维都有一个较明显的降维过程；空间分维也有较好的对应效果，但是存在漏现象。     

云南地区6级以上地震前M_s≥4.7级地震的时空特征标度

本文研究了1920年以来,云南地区M_s≥4.7级地震的时间序列及空间分布的特征标度。结果表明,当区内M_s≥4.7级地震在时间序列上出现我们定义的平静段和活跃段后,分别于418天和312天内即可能发生6级以上地震,对应率分别为71％和87％,1920年以来云南11次M_s≥6.8级地震前,出现活跃和平静特征标度的各5次。在空间上绝大多数(80％)大震震中处于我们所定义的长时间大范围空白缺震背景区或相对少震区内,仅少数(20％)位于4.7级以上地震相对密集区内或附近。4.7级以上地震上述时间序列及空间分布特征标度,可以作为云南6级,特别是6.8级以上地震中期或短期预测的判据和指标。同时可以看出,云南6级以上地震前,4.7级以上地震在时空演变上,经历了从无序到有序的演化过程。     

布朗族的天文历法知识刍议

布朗族使用傣历（祖葛历）,以月份结合物候变化指导生产,生活中使用７ｄ（天）为１轮的纪日制度,并将７个日名赋予不同寓意。这种状况可能距今只有２００余年的历史,在此以前的历法,由于没有文字记录而被完全淡忘了,但从其先民的崖画和口头流传的传说中,有阴阳并重、同时崇拜太阳和月亮的内容看,是处于阴阳合历初期的“物候历”,其内容应与佤族（清朝时分化）的阴阳历相似。     

嘉峪关光化楼残损变形现状及抗震性能分析

中国木结构建筑是我国宝贵的物质文化遗产和文化瑰宝，具有悠久的文化历史。以嘉峪关光化楼为依托，对光化楼进行实地调研，分析光化楼主要残损变形。采用ANSYS软件建立考虑光化楼残损变形的三维有限元精细模型，并进行模态分析与时程分析。研究结果表明，光化楼主要残损变形为油饰脱落、墙体剥蚀开裂、柱偏移等，极个别柱产生较大偏移；光化楼刚度相对稳定，前20阶振型自振频率均在10Hz以内；光化楼动力放大系数与层间位移角均较小，仍具有良好的抗震减震性能。     

Selection of ground motion time series and limits on scaling

A procedure to select time series for use in non-linear analyses that are intended to result in an average response of the non-linear system is proposed that is not based simply on magnitude, distance, and spectral shape. A simple model of a yielding system is used as a proxy for the non-linear behavior of a more complicated yielding system. As an example, Newmark displacements are used as a proxy for more complex slope-stability models. The candidate scaled time series are evaluated to find those that yield a response of the simple non-linear system that is near the expected response for the design event. Those scaled time series with responses near the expected value are selected as the optimum time series for defining average response even if the scale factors are larger than commonly accepted (e.g. scale factors >factor of 2).     

湘赣边地区走滑断裂带致矿异常的结构样式及分形特征

湘赣边地区构造岩浆带是环太平洋成矿带内最重要的高值地质矿产异常区,其中ＮＮＥ向走滑断裂明显地控制了岩浆－断陷盆地和铀及钨、锡、铅、锌、锑等的成矿作用．在区域地质环境研究的基础上,根据典型矿田（床）控矿构造分析成果,将走滑断裂带内局部性致矿地质异常归纳为：帚尾式致矿异常,棋盘格式致矿异常、辫状结环式致矿异常和拉分盆缘式致矿异常．重点讨论了各类异常的结构样式和分维特点．     

Nonlinear magnitude frequency relation and two types of seismicity systems

A nonlinear magnitude frequency equation has been derived in this paper on the assumption that all seismicity systems hold fractal characteristics, and according to the differences of relevant coefficients in the equation, seismicity systems are classified into two types: type I, the whole earthquake activity is controlled by only one great unified system; type II, the whole earthquake activity is controlled by more than one great system. One type of seismicity system may convert to the other type, generally. For example, a type I system will change to a type II system prior to the occurrence of a strong earthquake in North China. This change can be regarded as an index for earthquake trend estimation. In addition, the difference between b value in nonlinear magnitude frequency equation and that in linear equation and the term dΔM related to the coefficients of nonlinear terms obtained in this paper are proved to be a pair of available parameters for medium short term earthquake prediction.     

徕远广场结构设计地震波的确定

选择合适的人造地震动时程是高层建筑采用时程分析法计算地震作用的基础。介绍了徕远广场结构设计地震波的确定方法及过程。鉴于各条地震波输入进行时程分析的结果的离散性,提出可以采用场地土层反应分析得到的地表加速度时程及按照《高层技术规程》设计规准谱拟合人造波作为结构设计地震波。