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埃及铀矿勘探战略及远景
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作者 m.a.hassan A.B.Salman +1 位作者 H.S.Assaf 除国梁 《国外铀金地质》 1994年第2期104-110,共7页
埃及的铀矿勘探是近30a开始的,其手段是运用综合航空测量和地面放射性勘探,后者是在具有相当合适的地质判据的选区内进行的。在花岗岩和沉积岩多种地质环境中,放射性勘探发现了大量放射性异常和几个铀矿点。在这些铀矿点中,有些矿点显... 埃及的铀矿勘探是近30a开始的,其手段是运用综合航空测量和地面放射性勘探,后者是在具有相当合适的地质判据的选区内进行的。在花岗岩和沉积岩多种地质环境中,放射性勘探发现了大量放射性异常和几个铀矿点。在这些铀矿点中,有些矿点显示出有望成为可开采铀矿床的潜力。对一些岩石样品进行了淋滤和初步实验,以对这些矿点能否成为可采矿床的可能性进行评价,但至今还未判明这些矿床的确切储量。 在铀矿勘探国际战略中,为满足埃及核能发电的要求,对铀的需求必然会增加,这就需要进行深入的地面地球物理、地面钻探和地下采矿以及氡射气测量、油气测井工作。此外,像堆浸这样非常规浸取方法也可用于小规模铀矿床的开采。 在这个发展战略中,现在的铀矿点是按照原子能机构分类模式划分的。现在的铀矿点特征将运用到新区的勘探中。另外,其他磷块岩、黑色砂岩和稀有金属矿床资源开发也可提供一定量的铀、钍以及稀土元素。 展开更多
关键词 铀矿勘探 远景区 放射性勘探 铀矿床
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Review: Enhancing power transfer capability through flexible AC transmission system devices: a review 被引量:4
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作者 Fadi M.ALBATSH Saad MEKHILEF +2 位作者 Shameem AHMAD H.MOKHLIS m.a.hassan 《Frontiers of Information Technology & Electronic Engineering》 SCIE EI CSCD 2015年第8期658-678,共21页
Global demand for power has significantly increased, but power generation and transmission capacities have not increased proportionally with this demand. As a result, power consumers suffer from various problems, such... Global demand for power has significantly increased, but power generation and transmission capacities have not increased proportionally with this demand. As a result, power consumers suffer from various problems, such as voltage and frequency instability and power quality issues. To overcome these problems, the capacity for available power transfer of a transmission network should be enhanced. Researchers worldwide have addressed this issue by using flexible AC transmission system (FACTS) devices. We have conducted a comprehensive review of how FACTS controllers are used to enhance the avail- able transfer capability (ATC) and power transfer capability (PTC) of power system networks. This review includes a discussion of the classification of different FACTS devices according to different factors. The popularity and applications of these devices are discussed together with relevant statistics. The operating principles of six major FACTS devices and their application in increasing ATC and PTC are also presented. Finally, we evaluate the performance of FACTS devices in ATC and PTC improvement with respect to different control algorithms. 展开更多
关键词 FACTS devices Available transfer capability Power transfer capability Artificial intelligence
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