高倾角地层地震勘探在新疆尼勒克煤田勘探中的应用

尼勒克井田的浅表层地震地质条件差，深部地质构造复杂，地层倾角大。通过建立地质构造模型，反演出高倾角地层的地震记录，针对高倾角地层地震反射波的特点，采用小道距观测，在资料处理方法上着重注意原始资料分析、静校正处理、反褶积测试、叠前偏移技术等环节。该区勘探结果表明：在高倾角地层从事地震勘探，首先要根据地震地质条件作好构造模型及反演记录，着重做好变观措施，其次选取合理的处理模块，做好叠前偏移技术，兼顾干扰波去除，即可获得满意的勘探效果。     

定福庄地热试验井成井工艺研究

JR-121井位于北京市定福庄南里,开采蓟县系雾迷山组1600m以深热储层的岩溶裂隙水。该试验井施工使用GZ-2000型水源钻机,TBW-850/50型泥浆泵,钻探深度2202.98m。成井过程中,根据不同层段,采用不同成井工艺,在目的含水层的上覆非取水层段,采用分级下套管及水泥封闭的方法进行止水,泥浆与回旋方法钻进;在取水段,采用裸眼孔底钻铤加压、泥浆护壁与回旋钻进。洗井工艺上,采用酸化、液态CO2和空压机引喷相结合的联合洗井方法。使用此成井工艺,止水效果良好,达到了开发岩溶裂隙地热水的目的。     

宁冈芙蓉李落花落果发生规律及其动态模拟初探

根据平行观测、调查取样等资料,运用统计学方法,揭示了宁冈芙蓉李落花落果的生物规律及主要气象影响因素,建立了其动态模式,并相应提出了减少落花落果的技术措施。     

计算机多媒体技术与地声监测及地震预报

本文主要介绍了计算机多媒体技术以及地声的主要频谱特征,同时探讨了利用计算机多媒体技术进行地声的实时监测从而实现对地震的临震预报的一种方法。     

吉林省地质灾害及其防治的遥感应用

应用遥感技术查明吉林省地震、崩塌、滑坡、泥石流、地面塌陷、地面沉降、地裂缝、水土流失、土地沙漠化、土地盐渍化及土地沼泽化等地质灾害的特点,分布状况及形成机制,探讨了防治与减灾对策。表明遥感方法在地质灾害的调查和监测方面,具有重要意义。     

地震科技信息的优化管理与数据库的建立和应用

天津市地震局从贯彻执行国家地震局预测预防司的有关文件做起,结合其地震科技信息工作的特点,从优化管理入手,借助现代化的工具和手段,建立了文献管理数据库,并在实践中加以应用,以增强服务功能,更好地为防震减灾服务。     

多媒体技术在地理信息系统中的应用

将多媒体技术应用于地理信息系统中的关键问题是：如何有效地管理多媒体数据和空间数据;其次,在区域分析过程中,怎样实现多媒体播放功能．指出用扩充的关系数据模型作为多媒体数据模型较适宜;多媒体功能的实现则取决于多媒体数据的格式是否为ＲＩＦＦ格式以及对多媒体数据的应用要求．最后展示了多媒体技术在地理信息系统中的应用前景．     

The transfer of agricultural technology and the development of small-scale farming in rural Africa: Case studies from Ghana, Sudan, Uganda, Zambia and South Africa

In many developing countries, research institutions or centres have been established to develop and/or adapt technologies that would help agricultural development. This is particularly true in Africa where national efforts have been supplemented with international research institutes. Although some modest progress has been achieved in improving agricultural technology, on the whole, the improvement record is not quite encouraging among the small-scale farmers. In many areas, either there are no improved technologies, or where they exist, are unacceptable by farmers. However, where useful technologies exist, their spread has been very limited and where they have been adapted, the benefits only accrue to a small segment of the community. The logical question posed is: why and how do we find ourselves in the current situation? This paper considers the view that to understand fully why the available technologies have remained largely at the research centres, there is need to examine the whole process of research, development, dissemination and utilization of agricultural technology. It is significant to investigate the structural constraints and prospects under which those involved in the process work, their motivations and the interactions between different groups. The traditional ‘top-down’ of development strategy should be supplemented with farmers' indigenous knowledge, and programmes encouraging transfer of agricultural technology should include institutional support. Only by the identification of farmers' environmental and resource utilisation, preferences, socio-economic circumstances and constraints can a development programme of optimum meaning to farmers be devised and implemented with success.     

某油田稠油油藏加密钻井工程技术

结合钻井工程实际,介绍了稠油加密钻井施工的特点,钻井设备选择、钻进工艺,泥浆工艺与完井工艺等。     

大陆科学钻探与中国第一口科学钻选址

大陆科学钻探是一项堪与航天技术媲美的浩大系统工程。它的实施具有深远的科学和经济意义。通过介绍国外大陆科学钻探的现状和成果,阐述大陆科学钻探对地球基础科学、其他自然科学研究所具有的重大促进作用,从而为开展我国第一口大陆科学钻探,缩短与国外先进水平的差距提供有益的借鉴。