Damage or protection? The role of smoked crust on sandstones from Yungang Grottoes

Black crusts, such as dust deposit and smoked smudge, are the main pollutants in Yungang Grottoes, the world famous Buddhist heritage site. It is always considered that the black crust should be removed during the conservation process of stones. In this paper, the investigation of the role of smoked crust on the Yungang sandstones was performed to verify if the smoked layer on the stone surface would be harmful or protective. The results of SO₂ corrosion experiments with and without water both show that the samples covered with smoked layer can play a protective role on the sandstones, which means that the smoked layer on the stones can prevent the attack of SO₂ and water, the major deterioration agents in Yungang area. The multi-factor deterioration cycle experiments, including salt crystallization, freeze–thaw damage, wet–dry cycle and acid corrosion, also indicate that the smoked samples are less deteriorated and salt crystallization is the most severe damage to the sandstones.     

An Early Permian brachiopod fauna of Gondwanan affinity from the Baoshan block,western Yunnan,China

The present paper describes and illustrates an Early Permian brachiopod fauna collected from two localities from the upper part of the type Dingjiazhai Formation near Youwang, 30 km south of Baoshan in the Baoshan block, western Yunnan, China. The brachiopod fauna is dominated by Stenoscisma sp. and Elivina yunnanensis sp. nov. and exhibits strong generic and some specific links with faunas from the Bisnain assemblage of Timor and the Callytharra Formation of Western Australia and, to a lesser extent, faunas from the Jilong Formation of southern Tibet, the Tashkazyk Formation of southeastern Pamir, the lower Toinlungkongba Formation of northwestern Tibet, the upper Pondo Group of central Tibet, and the Jimba Jimba Calcarenite of the Carnarvon Basin, Western Australia. Based on these correlations, a Late Sakmarian (Sterlitamakian) age is preferred for the Dingjiazhai brachiopod fauna. Two new species are proposed: Globiella youwangensis sp. nov. and Elivina yunnanensis sp. nov.     

Chorilingia (Neuroptera: Grammolingiidae): a new genus of lacewings with four species from the Middle Jurassic of Inner Mongolia,China

SHI, C.F., WANG, Y.J., YANG, Q. & REN, D., September 2012. Chorilingia (Neuroptera: Grammolingiidae): a new genus of lacewings with four species from the Middle Jurassic of Inner Mongolia, China. Alcheringa 36, 311–320. ISSN 0311-5518.

A new grammolingiid genus, Chorilingia containing four new species (C. euryptera, C. parvica, C. translucida and C. peregrina) is described and illustrated from the Jiulongshan Formation at Daohugou, Inner Mongolia, China. The new genus is differentiated mainly on the first branch of vein Rs (Rs1) separating distal to the forks of both CuA and CuP. A key to species of the genus is provided.     

探析非物质文化遗产保护与高校教育的融合

非物质文化遗产保护和高校教育是互相联系、相互作用的两个彼此紧密联系的方面,处理好两者的关系不仅对于保护和传承非物质文化遗产具有重要的意义,而且也能促进教育的发展。     

文苑瑰宝:国家图书馆藏西夏文文献

1917年宁夏灵武县修城时出土两大箱西夏文文献,后辗转传藏,于1929年大部分入藏于北京图书馆(今中国国家图书馆),计百余册,蔚然成为大观,少部分藏于甘肃、宁夏,一部分流失于日本.     

西周金文形声字的形成及构形特点考察

本文通过对西周金文形声字的全面考察,得出了西周金文形声字的主要形成方式有增加义符、增加声符、形声相益、变形声化四种;构形上具有声符、义符位置不固定、形体不固定、数量不固定等特点,这些为认识早期形声字的面貌及理解后世形声字声符兼义现象提供了帮助。     

辽东半岛全新世最大海侵的考古学观察

全新世以来,我国沿海海岸随着海侵——海退的变化而不断发生变化。从辽东半岛发现的新石器时代诸文化遗存来看,各贝丘遗址出土的海生贝壳反映出这些遗址距离海岸不远。根据这些遗址的分布范围及出土贝壳等遗物,可以看出：辽东半岛东港地区最大的海侵发生在距今6500～5000年,其时间上限可追溯到距今8000年左右。     

完善县域旅游发展规划的途径

为促进我国旅游业科学有序地发展,搞好县城旅游规划是非常重要的战略步骤,认真解决县域旅游规划实践中的问题,将会给我国旅游事业带来巨大的效益。