德国岩溶水勘查技术与开发利用

本文介绍德国南部岩溶区的自然地理地质概况、水文地质特征,引入关于岩溶水文地质垂向分带的概念模型。着重评述多电极地电探测、地面穿透雷达、地面核磁共振三种先进的地球物理探测方法。对德国岩溶水开发方式及保护措施进行具体分析,介绍了德国民众对地下水、矿泉水的认识。最后,将德国岩溶水勘查技术与国内现状对比评价,明确应当学习和引进先进技术的思路。     

转光膜在棉田中的应用试验与示范

1998-1999年对转光膜在和田市定点试验和大田示范，转光膜具有比普通膜更明显的增温及提高棉花苗期抗低温能力、促进棉花生长发育的作用。棉田使用转光膜后，可提高棉花品质，增产增收效果显著。     

当代气候研究计划

就气候系统问题，国际上与气候及其变化有关的重要科学计划、尤其是气候变化及可预报性研究（CLIVAR）计划，作了简要介绍，同时还就气候预测问题作了讨论。     

A HORIZONTAL 2-D HYDRAULIC NUMERICAL MODEL AND IT’S APPLICATIONS TO FLOOD FORECAST

1 INTRODUCTION There were many flood disasters in China in recent years. When the water level in a river is very high, weak parts of its dike may be destroyed resulted in the submersion of the protected land and properties. It is of significance for decision-makers to exactly predict the processes of flood propagation during flood control. There are many modes of dike bursting, such as seepage destroying by overflow on top of dike caused by dike body sinking induced by piping and soil fl…     

WEB站点安全性研究

从单密钥加密、公用密钥加密、安全散列、数字签名等网络安全技术出发，讨论了网络通讯中的信息加密、信息完整性以及客户机服务器认证等技术知识。并详细分析了SSL协议工作原理，讨论了如何利用CA数字证书签发机构和SSL协议原理在Internet/Intranet中建立Web安全站点，本文将以Windows NT和UNIX环境为例，详细介绍安全Web站点的配置步骤，充分利用SSL的强大功能，以确保通信双方的信息安全性。     

面向对象的GIS数据模型与实现

介绍了面向对象数据模型的基本概念，重点讨论了面向对象数据模型在地理信息系统中的应用及具体实现途径。     

滇中震旦系碳酸盐岩破碎地层的钻探护孔新技术

破碎地层中钻探，采用有效的护孔技术是避免孔内事故发生的重要手段，同时也是保证完成钻探各项技术经济指标的先决条件。本文阐述了在具代表性的磷矿破碎地层中钻进所遇到的护孔难题及其所采用的护孔新技术、新方法。     

节水灌溉理论与技术发展现状

水资源日益短缺是全球性的问题。农业节水潜力较大，从长远战略角度看，发展节水灌溉对缓解我国水资源的供需矛盾意义重大，本文通过节水灌溉理论研究进展情况的介绍，提出了西北地区发展节水灌溉应注意的问题。     

基于声光衍射原理的新型医学CT构想

根据声光衍射原理，提出一种全新扫描方式和图象重建方法的医学ＣＴ技术设想。在理论上给出了新技术的可行性研究，并提出新方法实用化实验的参数和条件。与现用的ＣＴ相比，交真有扫描时间短，重建图象速度快，对人体无害，图象分辨率高，成本大幅度降低等显著优点。     

The effects of the spinel—garnet phase transition on the formation of rifted sedimentary basins

We have examined the effects of the spinel-garnet phase transition on subsidence of extensional sedimentary basins. For a constant positive Clapeyron slope ( dP/dT ), the phase boundary moves downwards in the syn-rift and upwards in the post-rift phase. For a non-linear Clapeyron curve ( dP/dT > 0 above 900°C and dP/dT < 0 below 900°C), theory predicts for the reaction of the spinel-garnet phase transition, the direction of phase boundary movement is dependent on the stretching factor, the position of the Clapeyron curve and the lithospheric thickness. A smaller syn-rift and larger post-rift subsidence are predicted for a deeper phase boundary and a thicker lithosphere. The model with a non-linear Clapeyron curve is applied to the subsidence histories of a young extensional basin (Gulf of Lion) and an old continental margin (eastern Canada). The observed syn-rift uplift and the larger post-rift subsidence can be reasonably explained by this model, where the optimum depth of the phase boundary for eastern Canada (˜90 km) is consistent with the estimate from seismic observations and is larger than that for the Gulf of Lion (˜ 50 km). The depth of the spinel-garnet phase boundary is sensitive to the composition of mantle rocks and increases with the extraction of basaltic components from the lithosphere, compatible with our result that the phase boundary is deeper for an older and thicker lithosphere. Thus the surface movement associated with the rifting for these areas may reflect the chemical evolution of the continental lithosphere.