青田石开采现状与鉴藏

对文人篆刻的兴起和发展有过大贡献的青田石,其现状不容乐观。全文通过对青田石各矿洞开采现状的调查,阐述了青田石面临的困境。同时,结合多年的收藏经验,介绍青田石各矿洞的印石品种、石性及收藏注意事项。     

双参数量子李代数及其表示

量子包络代数在量子伴随作用下成为自身的模,而量子李代数是其中的一个不可约子模,该子模在自身的量子伴随作用下封闭,从而成为李代数的量子化．本文把量子李代数的概念推广到了双参数的情形．     

发现石门坎

威宁石门坎是贵州西北部的一个小村寨,是我国大花苗聚居区的居中地点。清末英国传教士柏格理发现了石门坎,在此建教堂、办学校、办医院,创制苗文,引发苗族大规模皈依基督教。20世纪30年代开始,国民政府发现了石门坎异文化区,采取许多政策对石门坎进行文化改造。新中国建立后,为贯彻党的民族政策,党和政府针对石门坎的特殊性,在消除民族隔阂,实现民族平等、民族团结方面做了大量工作。80年代中期后,石门坎的价值重新被发现,得到各级领导的重视,再次成为为们研究的热点。     

泰山刻石安国藏百六十五字本准秦文说

秦泰山对石小篆,最佳拓本是明安国藏本．存字百六十五。其文字内容与《史记》所载秦泰山刻石颂词及二世诏书摊校,有十余处似异而实同,其小篆构成百余字与可捡秦文相对照,基本吻合。所以得出结论：安国藏本的小篆与秦文相符,是秦文字或准秦文字。     

Fuzzy代数上的Fuzzy模

引进了模糊代数上的模糊模的概念,并给出了一些特征性质     

中国石刻文献的种类及其演变

以石为载体的文献形式是人类最古老的文献形式之一。古埃及早在第四王朝时（约公元前２６１３～前２４９４年）即有方尖碑。公元前１８世纪由古巴比伦国王汉穆拉比颁布的《汉穆拉比法典》,也是用楔形文字将２８２条有关诉讼手续、财产权、损害赔偿、租佃关系、债权债务、...     

CN李代数,CS李代数与对称自对偶李代数

引进了ＣＮ李代数、ＣＳ李代数等概念,给出了ＣＮ李代数、ＣＳ李代数与Ｈｅｉｓｅｎｂｅｒｇ代数、对称自对偶李代数的关系,从而首次揭示了完备车代数与共形场论的关系．     

一类低维可解李代数

构造了复数域上维数为5的以最简线状李代数为幂零根基的不可分解可解李代数.     

The contribution of urban-scale environmental monitoring to materials diagnostics: A study on the Cathedral of Modena (Italy)

The problem of environmental monitoring aimed at identifying and evaluating the weathering mechanisms affecting historical stoneworks is here discussed and a methodology based on the use of already available, long record, urban-scale environmental data is proposed. An example of its application to the Cathedral of Modena (Italy, XII-XIV century, included in the UNESCO's World Heritage List) is then presented. In this case, the methodology allowed the identification of the main degradation causes, which found significant confirmation by material diagnostics on the available samples and finite element structural modelling. Thanks to the decay causes identification allowed by the proposed methodology, more effective restoration procedures can be outlined.     

Study of silica nanoparticles – polysiloxane hydrophobic treatments for stone-based monument protection

The growing interest in the conservation of historic buildings encourages the development of water-repellent materials and methodologies to consolidate and/or protect stones. Recently, particular attention was devoted to composites of inorganic oxides nanoparticles and hybrid siloxane or silicone polymers. Here we present a study on the water repellence of a thin protective coating obtained through sol-gel process starting from Glymo and Dynasylan 40®, and loading the silicate matrix with nano-sized silica particles (Aeroxide LE1® -Degussa-Evonik). The coatings were applied to limestone, sandstone and granite samples. The silica nanoparticles have been characterized by XRD, the siloxane matrix through micro-Raman spectroscopy, while the surface morphology was examined by SEM. The efficacy of the treatments has been evaluated through static contact angle measurements and capillary water absorption. The optical appearance of the coatings was evaluated by colorimetric measurements. Nanoparticles at suitable concentration gave high values for the static contact angle (up to ∼ 150°), for all stone species even for four months exposure to atmospheric conditions. The coatings, in the water capillary absorption tests, however, behave as expected only for granite even if the long-term water direct contact reduces the hydrophobicity.