1931年6月25日,位于文津街的国立北平图书馆新馆开馆并举行落成典礼,它是当时国内规模最大、最先进的图书馆.馆长蔡元培致开幕词,众多文化名流集聚一堂,中外来宾两干余人到会,有些机构和个人还赠送书籍作为贺礼.其中,德国公使馆代德国外交部赠送了一本“虑无相当之物品胜于此书之古本”.
Compared to the sandstone-type uranium deposits in the Ordos Basin and the Songliao Basin, the Tamusu uranium deposit in the Bayingobi Basin formed in fault-depression transition region displays distinctive features. First, the uranium-bearing sandstones
Uranium exploration breakthrough was extremely rare in an aeolian depositional sys-tem. In order to know the complicate characteristics of oxidation associated closely with uranium min- eralization in the aeolian depositional system, petrology and mineral
Large quantities of metal sulfides are widely distributed in uranium ores from the Mid-dle Jurassic Zhiluo Formation of the Shuanglong uranium deposit, southern Ordos Basin, providing a convenient condition to study the relationship between metal sulfides
以2020年中国图书馆学会阅读推广空间案例征集活动获奖的16家公共图书馆为调研对象,分析其空间类型、空间管理、空间设计、空间服务现状.研究发现,当前我国公共图书馆阅读推广空间类型定位鲜明且多元发展;空间管理强调纳入第三方协同管理与营销;空间设计注重场景与情境的构建;空间服务内容不断细分和创新.在此基础上提出公共图书馆阅读推广空间建设策略:提供满足阅读推广需求的空间规划设计、打造图书馆阅读推广空间管理人才队伍、加强与阅读推广空间利益相关者的合作、探索图书馆阅读推广空间治理模式与方法.
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The main central thrust (MCT) is one of the major thrusts in Himalayas. In central Hi-malaya, MCT was defined as a contact between underlying Lesser Himalayan Sequence (LHS) and overlying higher Himalayan crystallines (HHC). However, in the Kashmir Himala
The Zoujiashan uranium deposit in the Xiangshan ore field is the largest volcanic-related uranium deposit in China. Hematite-and fluorite-type ores are the predominant mineralization styles. Hematitization in the Xiangshan ore field is closely associated
In order to determine the provenance and variation characteristics of sandstone-type uranium deposits located in the southwest Ordos Basin, U-Pb geochronology and Hf isotope analyses were conducted on detrital zircons from the Late Mesozoic strata of the
To investigate biostratigraphy of Albian sediments (Kazhdumi Formation) in the Zagros Basin, 280 samples in four sections were prepared which are nominated as Murshan-e-Bala, Fahliyan- e-Pain, Kupon and Tale-e-Afghani. Stratigraphic distribution of identi