热带气旋运动曲率的数学模型与路径异常的月尖突变判据

采用运动曲率数学模型，研究热带气旋异常路径的成因，得到的主要结果是：热带气旋路径曲率及其变化与科氏力参数、环境场气压分布、热带气旋的移速及涡旋动力结构、下垫面摩擦力等因子有关；当各类影响因子渐变至满足月尖突变判据时，出现演变曲线的折叠区，随着外源参数变化，一旦解移出折叠区，热带气旋便可发生移间突变，出现各类异常轨迹。     

Earthquake hazard assessment from the recent space and surface measurements of the Earth's gravity field

The distinctive nature of the structure of the Earth's gravity field over high seismicity areas, as observed in some limited scale studies, indicates that it is possible to use these associative patterns to outline areas of high seismicity or high earthquake hazard potential from a knowledge of the finer structure of the Earth's gravity field. The global scale investigation of such relationships as a function of the geophysical characteristics of various tectonic provinces, and the parameterisation of such relationships by hypocentral depth and earthquake intensity/energy data, become even more attractive because of the availability of (1) satellite-determined gravity models which provide global information on the long wavelength components of the gravity field, (2) satellite altimetry data which provide oceanwide information on the detailed geoidal structure, (3) surface gravity data which provide information on the short wavelength components in the areas of surface gravity coverage, and (4) bathymetric and topographic data which, though still somewhat limited in spite of their recent extensions of coverage, are available in more and more areas and provide information on the tectonic and morphological environments of an area to enable its gravity data conversion to some standard environments for direct comparisons of underlying structures. Additionally, the rapidly mounting geological and geophysical evidence of considerable intraplate tectonic activity, not so fashionable until recently, makes the study of these correlative patterns even more attractive and productive from a scientific viewpoint. This paper presents the major elements of the theoretical formulation for conducting such investigations.     

2017年全球发现的新矿物种

在系统梳理和归纳2017年度全球发现并经国际矿物学协会(IMA)新矿物与矿物分类命名专业委员会(CNMNC)批准成立的108个新矿物种资料的基础上,根据这些新矿物的重要矿物学特征(矿物名称、晶体化学式、晶系和空间群、晶胞参数、主要粉晶数据、物理性质、光学性质、产地与产状及与其他矿物种的关系等),按照中国新矿物及矿物命名专业委员会颁布的《矿物种汉名审订条例》,对108个新矿物种的中文名称进行了审订。通过报道全球逐年发现的新矿物资料,全面介绍世界新矿物研究的新进展,为我国新矿物的发现和研究提供借鉴,并推动矿物种中文译名规范化与标准化的进程。     

2016年全球发现的新矿物种

在系统梳理和归纳2016年度全球发现并经国际矿物学协会（IMA）新矿物与矿物分类命名专业委员会（CNMNC）批准成立的121个新矿物种资料的基础上，根据这些新矿物的重要矿物学特征（矿物名称、晶体化学式、晶系和空间群、晶胞参数、主要粉晶数据、物理性质、光学性质、产地与产状及与其它矿物种的关系、矿物名称来源和化学变化等），按照中国新矿物及矿物命名专业委员会颁布的《矿物种汉名审订条例》，对121个新矿物种的中文名称进行了审订。通过定期公布国际新矿物发现和研究的新进展，为我国新矿物的发现和相关研究工作提供参考和借鉴，并进一步完善和规范矿物种中文名称体系。     

海南岛及邻近地区潜在震源近期强震发生概率的研究

海南岛及其邻近地区属于中国南弱地震区，但它是该地震区内地震活动水平相对较高的东南沿海地震带的一部分，该地区经济发达，人口稠密，１９９４年９月１６日发生台湾海峡７．４级地震，１９９４年１２月３１日和１９９５年１月１０日相断在北部湾发生了６．１级和６．２级地震，如何估计未来本区的地震趋势是一件十分重要和困难的事情。     

松南地区浅部储层测井参数研究

本文根据常规测井响应特征，利用岩石化验分析资料，采用一元—多元线性回归的数理统计方法，分析储集层参数与测井响应的对应关系，建立起地区性的经验参数和经验公式，形成测井分析的最基本方法。完成测井识别油气、评价储层的任务中收到了令人满意的效果     

逐步缩小搜索范围的遗传算法

本文介绍在遗传算法的运行过程中如何逐步缩小搜索范围，使搜索速度与计算精度同时得到提高的方法。文中提出了真值邻域的概念，利用这个概念得到了缩小搜索范围的压缩公式。只要合理选择初始搜索范围（这一点并不难做到），上述压缩公式能确保问题的解始终保留在压缩后的搜索范围内。通过理论模型的检验及与原有遗传算法结果的比较，证实了方法的有效性。     

花岗岩裂隙水推荐配方稳定性模拟研究

在核废物深部地质处理科学过程中，提供一种长期稳定的模拟花岗岩裂隙，用以模拟试验是非常有必要的。本文主要依照中国辐射防护研究院推荐的模拟花岗岩裂隙水修正配方，引用地球化学模式程序对其溶液的稳定性进行模拟计算，探讨配方中所存在的问题。     

Groundwater control for construction purposes: a case study from Kuwait

One of the major rehabilitation projects in Kuwait during the 1990s was improvement of the wastewater treatment plant at Jahra, a town 30 km north of Kuwait City. The project incorporates construction of a pumping station to collect the sewage via a network of sewer lines throughout the city. Groundwater occurs 4 m below the ground surface and construction specifications required lowering the groundwater table by 16 m to the foundation grade, 20 m below the ground surface. Open excavation with four stage well point system of dewatering was selected to ensure dry foundation conditions; but the system failed to lower the groundwater table down to the desired depth. Review of site investigation records and recalculation of field hydraulic conductivity resulted in design changes, augmenting the well point system with a number of deep wells and sumps to lower the water table down to the foundation grade. The paper discusses subsurface conditions and presents an analysis of the cause of failure of the well point system. The actual hydraulic conductivity proved to be several folds higher than the calculated one that was determined using Hazen’s formula. It was found that use of Hazen’s formula led to serious underestimation of field hydraulic conductivity. It is advised not to use such formulas without thorough investigation and proper interpretation of borehole data.     

斜向波浪作用下双层水平板式防波堤波浪荷载试验研究

In this study, systematic physical model tests were performed to investigate the wave forces on the twin-plate breakwater under irregular waves. Based on the experimental results, the effects of the relative plate width B/L,wave height Hs/D and incident angle θ0 on the wave forces were analyzed and discussed. The results showed that:(1) The envelopes of the total wave pressure were generally symmetrical along the direction of plate width under the incident angles(θ0) being 0°, 15°, 30°, 45° and 60°. In particular, the envelopes of wave pressure atθ0=30° were larger than all other cases.(2) The synchronous pressure distribution of the breakwater under oblique wave action was more complicated comparing to the normal incident waves.(3) Based on data analysis, an empirical formula was obtained to estimate the total vertical force of the twin-plate breakwater.This empirical formula can be a good reference for the design basis of engineering applications under specified wave conditions.