无限深土石坝坝基悬挂式垂直防渗体防渗方法初探

筑坝工艺的提高和计算分析手段的发展,解决了在无限深透水地基上建坝所面临的多方面问题,但在某些方面,仍需改进和完善。通过理论计算和物理模型试验,研究和探讨了采用悬挂式垂直防渗体解决水库渗漏的问题,对在无限深透水地基上建坝的问题进行了分析探讨。     

Existence and release of fluid inclusions in bornite and its associated quartz and calcite

The existence and release of fluid inclusions in bornite and its associated minerals, namely, quartz and calcite were investigated and confirmed. The structures, forms, and phases of these large quantities of fluid inclusions were also studied. A mass of fluid inclusions with various sizes, distributions, shapes, and phases exist in bornite and its associated minerals. Their sizes vary from a few micrometers to tens of micrometers, and the forms appear as negative crystals, or elongated, elliptical, and irregular. At room temperature, fluid inclusions were mainly characterized as gas-liquid two- phase. However, small amounts of fluid inclusions with pure gas phase and pure liquid single-phase were also observed in quartz and calcite. These fluid inclusions initially broke during the ore crushing and grinding process and then released into the flotation pulp in the flotation process. The quantitative analysis of fluid inclusions in the solution and the comparisons of mineral dissolution show that the amount of copper and iron released by fluid inclusions in the bornite sample is higher than the amount dissolved by the mineral; fluid inclusions in the associated gangue minerals, quartz, and calcite also make contribution.     

Bending stress of rolling element in elastic composite cylindrical roller bearing

A new structure design method of elastic composite cylindrical roller bearing is proposed, in which PTFE is embedded into a hollow cylindrical rolling element, according to the principle of creative combinations and through innovation research on cylindrical roller bearing structure. In order to systematically investigate the inner wall bending stress of the rolling element in elastic composite cylindrical roller bearing, finite element analysis on different elastic composite cylindrical rolling elements was conducted. The results show that, the bending stress of the elastic composite cylindrical rolling increases along with the increase of hollowness with the same filling material. The bending stress of the elastic composite cylindrical rolling element decreases along with the increase of the elasticity modulus of the material under the same physical dimension. Under the same load, on hollow cylindrical rolling element, the maximum bending-tensile stress values of the elastic composite cylindrical rolling element after material filling at 0° and 180° are 8.2% and 9.5%, respectively, lower than those of the deep cavity hollow cylindrical rolling element. In addition, the maximum bending-compressive stress value at 90° is decreased by 6.1%.     

海洋勘测水下无人航行器的自主控制技术研究

针对水下无人航行器的海洋勘测任务,提出了一种基于多智能体(MAS)的自主控制技术.自主控制结构采用分布式的智能体结构,智能体之间通过通信和协作来共同完成复杂的整体操作.海洋勘测使命要求航行器在动态不确定的环境中,利用不同的勘测传感器进行多个局部区域的勘测.引入基于多属性路径点的使命描述方法,方便使命描述和控制.使命控制过程采用离散事件驱动的Petri网形式建模.针对事件管理过程中并发事件缺乏中央控制的问题,离散事件被赋予优先级以消除冲突.通过湖海试验验证了所提自主控制技术的可行性和有效性.     

非对映体4-（4＇-甲基苯磺酰胺基）-L-脯氨酸的合成及其对Aldol反应的不对称催化性能研究

以4-羟基-L-脯氨酸为原料合成了非对映异构体4-（4’-甲基苯磺酰胺基）-L-脯氨酸催化剂1a-b,通过IR,1H NMR和HR-MS对其结构进行了表征,并考察了其水相中对不对称Aldol反应的催化性能.结果表明,两种催化剂在水相中均能很好地催化Aldol反应,仅用5 mol％的催化剂即可得到很好的效果,产率高达93％,非对映选择性达94∶6,而对映选择性高达99％.     

四川盆地上三叠统碎屑岩油气成藏年代分析

通过烃源岩生排烃史、包裹体均一温度定年、自生矿物K-Ar定年等方法对川西、川中、川南上三叠统气藏成藏年代进行分析,确定四川盆地上三叠统气藏成藏期的早期、中期和晚期,其中中期为最重要的成藏期,早期与中期（印支期与燕山期）为烃源岩生烃成藏期,晚期（喜山期）为油气调整成藏期.区域差异表现为,川西地区成藏时间相对最早,稍晚为川南地区,川中地区成藏时间最晚.     

析新形势下的企业文化传播

企业需要通过各种有效的传播途径与方式方法,将企业文化更大范围地传播出去,使其为企业内外所认知、认同,进而将理念、精神转化为行动和习惯,确保企业文化的“落地生根”。文章就企业文化传播的意义、方式、载体、注意事项等,结合作者工作实际展开浅要分析,对基层企业文化传播工作进行探讨。     

挺胸体女装原型纸样修正技术研究

服装离不开人体,研究服装纸样要以人体为基准,特殊体型服装也不例外。挺胸体属于特殊体型中的一种,在当前人群中占有一定比例。目前市场上绝大部分成衣都是为标准体型设计的,个别的特殊体型成衣也只能兼顾到体型围度的大小变化,基于这种现状,研究挺胸体的服装结构显得尤为重要。为此,本文主要提取挺胸体女性体型数据进行实验研究,并利用创建挺胸体人台进行立体裁剪实验的方法获得挺胸体女装原型纸样,总结其变化规律,最终得到挺胸体女装纸样修正方法。     

CATIA-FLAC 3D耦合建模方法及其应用

针对FLAC3D面向复杂的地质模型建模存在的技术困难和不足,提出CATIA-FLAC3D耦合建模新方法.先利用CATIA强大的三维地质体建模功能进行三维地质建模,再利用其有限元模块对地质体进行网格划分;基于对两类软件中单元、节点数据关系的差异分析,应用Visual Basic语言编写CATIA-FLAC3D接口程序,实现了将CATIA环境下建模生成的单元、节点信息导入FLAC3D.以某已建成偏压隧道工程为例,验证了CATIA-FLAC3D耦合建模方法的可行性和有效性,为FLAC3D构建三维复杂工程模型提供了新的思路.