电磁波CT成像技术在防水工程场地勘查中的应用

电磁波CT成像技术是基于地下介质的物性差异，利用各种波源透视探测目的体及地质现象的一种地球物理方法，文章介绍了电磁波CT成像技术的原理和工作方法、某防水工程场地电磁波CT成像勘查实例及应用效果。     

CINRAD-SB型发射机一例复杂故障排除

根据舟山站CINRAD-SB型发射机在试运行初期一起复杂故障的现象，结合电子设备的维修经验，分析了该故障发生的根本原因及由它激发的几个故障部位电路原理，详细地介绍了这例复杂障的芯片／元件级排障过程。最后就试运行期间各台站CINRAD-SB型发射机高压打火频繁发生的现象提出一些建议，希望能防止同类故障再次发生。     

《空间分析建模与原理》一书出版

朱长青、史文中教授的著作《空间分析建模与原理》已由科学出版社于2006年5月出版。作者根据GIS中空间分析的需求，结合多年来对空间分析的教学和研究体会，从空间分析的模型建立、方法原理的角度完成了这部著作。该书不仅对于空间分析中常用的叠置分析、缓冲区分析、统计分析和网络分析模型进行了讨论，而且对于目前重要的数字高程模型建模及其精度分析模型、3维空间分析模型进行了论述，特别探讨了基于小波分析的空间分析模型。     

应用放射性测井方法推算石盐矿石品位

介绍了放射性测井原理,在石盐取心井段,绘制放射性测井曲线重叠图,将重叠图上的幅度差与化验分析资料进行深度归位,求出某井石盐矿石的测井品位系数,再利用此测井品位系数,推算出该井所有含矿层的矿石品位;分析了影响测井矿石品位系数的有关因素和所采取的措施。     

更快捷,更低廉,更优异——勘察设计行业的福音

喷墨与激光如何得兼 喷墨打印技术成像原理相对比较简单,购买成本低,但打印速度要比激光打印机慢,每页的打印成本较高,打印的负荷量较低,打印的文档不容易长期保存.因此,喷墨打印机只能占据以家庭需求为主的打印机市场.[第一段]     

滇藏铁路丽江玉峰寺隧道围岩岩爆刚度判据

从最小能量原理出发,探讨隧道围岩岩爆的刚度判据问题,并应用于滇藏铁路玉峰寺隧道工程。在滇藏铁路玉峰寺隧道代表性围岩岩样全应力应变刚压实验分析的基础上,结合地应力测量资料和数值模拟,分析玉峰寺隧道3种岩性不同围压条件下的变形破坏过程,得到隧道塑性破坏岩体和弹性岩体的刚度曲线,利用刚度判据,分析评价玉峰寺隧道3类岩体发生岩爆的危险性,玄武岩岩爆烈度最高,灰岩次之,砂岩最低,为隧道工程设计提供了参考依据。     

三段式定向井施工设计

介绍了定向井的设备及一般工艺，给出了如测点坐标、装置角等参量的计算及控制方法．另外．还介绍了定向井的原理及设计方法，包括钻具组合、三个井段的结构、靶区、造斜点、井底垂深的计算等。可供钻井工程人员参考。     

In, Sn, Pb and Zn Contents and Their Relationships in Ore-forming Fluids from Some In-rich and In-poor Deposits in China

All the indium-rich deposits with indium contents in ores more than 100×10- 6 seems to be of cassiterite-sulfide deposits or Sn-bearing Pb-Zn deposits, e.g., in the Dachang Sn deposit in Guangxi, the Dulong Sn-Zn deposit in Yunnan, and the Meng'entaolegai Ag-Pb-Zn deposit in Inner Mongolia, the indium contents in ores range from 98×10-6 to 236×10-6 and show a good positive correlation with contents of zinc and tin, and their correlation coefficients are 0.8781 and 0.7430, respectively. The indium contents from such Sn-poor deposits as the Fozichong Pb-Zn deposit in Guangxi and the Huanren Pb-Zn deposit in Liaoning are generally lower than 10×10-6, i.e., whether tin is present or not in a deposit implies the enrichment extent of indium in ores. Whether the In enrichment itself in the ore -forming fluids or the ore-forming conditions has actually caused the enrichment/depletion of indium in the deposits? After studying the fluid inclusions in quartz crystallized at the main stage of mineralization of several In-rich and In-poor deposits in China, this paper analyzed the contents and studied the variation trend of In, Sn, Pb and Zn in the ore-forming fluids. The results show that the contents of lead and zinc in the ore-forming fluids of In-rich and -poor deposits are at the same level, and the lead contents range from 22×10-6 to 81×10-6 and zinc from 164×10-6 to 309×10-6, while the contents of indium and tin in the ore-forming fluids of In-rich deposits are far higher than those of In-poor deposits, with a difference of 1-2 orders of magnitude. Indium and tin contents in ore-forming fluid of In-rich deposits are 1.9×10-6-4.1×10-6 and 7×100-6-55×10-6, and there is a very good positive correlation between the two elements, with a correlation coefficient of 0.9552. Indium and tin contents in ore-forming fluid of In-poor deposits are 0.03×10-6-0.09×10-6 and 0.4×10-6--2.0×10-6, respectively, and there is no apparent correlation between them. This indicates, on one hand, that In-rich ore-forming fluids are the material basis for the formation of In-rich deposits, and, on the other hand, tin probably played a very important role in the transport and enrichment of indium.     

《编译原理》课程教学设计探讨

分析了编译原理课程的性质,设计了整个教学过程,将课程的教学分为教学任务的分析、学生起点的鉴别、教学目标的陈述、教学策略的制定以及阶段性和总结性的评价等环节,明确了每个环节的工作重点。     

薄板样条的半参数估计在地球重力场中的应用

提出了一种受多维变量影响的解决系统误差的半参数估计的薄板样条法,分析了其正则矩阵R,以某一重力异常数据处理算例验证了其正确性与可行性.