GEOGRAPHICAL PATTERNS IN BIOLOGICALLY AVAILABLE STRONTIUM,CARBON AND OXYGEN ISOTOPE SIGNATURES IN PREHISTORIC SW GERMANY*

In order to interpret strontium and oxygen isotope values in Neolithic human skeletons analysed previously, we begin to map the biologically available strontium, carbon and oxygen isotopic signatures of prehistoric southern Germany by analysing tooth enamel of pigs from archaeological sites distributed around the region. The mapping shows a marked upland–lowland difference in biologically available ⁸⁷ Sr/ ⁸⁶ Sr values, ranging between 0.7086 and 0.7103 in the sedimentary lowlands, and from 0.710 to as high as 0.722 in the crystalline uplands of the Odenwald, the Black Forest and the Bavarian Forest. In addition, carbon isotopes in the carbonate fraction of pig enamel were generally about 1–2 more enriched in ¹³ C in the uplands. Despite the expected depletion of ¹⁸ O with altitude, oxygen isotopes in pig enamel showed little correlation with site altitude, although for pig samples not older than the Iron Age there was some geographical correlation withδ¹⁸O patterns in modern precipitation.     

Rubidium hydroxide polyethylene glycol crown ether in the conservation of old master paintings*

The development of new, gentler methods for the conservation of Old Master paintings, with an emphasis on the removal or thinning of deteriorated varnish, is of high priority. In the course of the deterioration process, oxidative attacks lead to progressive formation of carboxylic acid groups, while many ester bondings are expected to be weakened. A stable RbOH polyethylene glycol complex was a promising tool to react with these moieties and to successfully break down the polymeric varnish layer. The remnants were easily wiped off mechanically. Control studies employing ⁸⁶RbOH and ¹⁴C polyacrylate showed the complete absence of residual cleansing components on the paint surface.     

14C测定判别武王克商年代范围始末

武王克商年代是我国古代编年中的一个关键点,近年来^14C测定技术有了重要发展,我国^14C测年界在此基础上探讨了^14C方法应用于商周历史纪年的希望。1996年夏商周断代工程正式立项,利用^14C测定判别武王克商年代范围的任务得以实施。1998年初两个常规^14C实验室以3‰测定精度,前后开始对陕西丰镐遗址出土样品^14C测定,并于1998年10月6－7日先后公布了^14C数据,提出武王克商代范围应判别在公元前1050－1020年间。1998年下半年AMS室开始测定。三室测定数据对比结果基本相合,利用殷墟,琉璃河等遗址出土的样品系列作^14C测定得出的结果,与上述年代范围一致。1998年11月30日公布了天计算结果,与测定结果不谋而合,经多方面反复验证,历时近二年,都无法动摇已有的判别结果,具有较高的可信度。     

内蒙古扎鲁特旗南宝力皋吐新石器时代墓地C地点发掘简报

C地点共清理墓葬37座,为圆角长方形土坑竖穴墓,多数墓葬为单人仰身直肢葬。随葬品主要是陶器,器物组合以筒形罐和壶为主,还出土石器、骨器、玉器等。C地点墓葬的文化内涵与此前发掘的A、B两地点新石器时代墓葬应属同一种文化,可暂称为南宝力皋吐类型。     

再论御器厂的建立时间——明代御窑遗址的考古学分期

长期以来关于御器厂的研究多依据文献进行考证,20世纪80年代以后开始关注御窑遗址出土文物。但是,由于以往的研究中一直把文献所记的御器厂和景德镇从事生产的窑场视为完全相同的对象,所以对御器厂建成厂时间的论定则出现偏差。本文根据正德《饶州府志》、万历《大明会典》的相关记载,认为景德镇从事生产的窑场和厂署在饶州府治所在的鄱阳县城、作为管理机构的御器厂所指并不相同,在对比景德镇御窑遗址的考古发现后,考订景德镇从事生产的官府窑场在明代的始烧时间不晚于洪武四年,作为管理机构的御器厂建立于洪熙元年宣德皇帝即位以后,而御器厂从饶州迁往景德镇与生产窑场合一是正德六年以后的事。     

余英时对“宋学”的现代诠释

在中国学术的发展脉络和文化传统的历史演进中,余英时尤其推重"宋学",并对"宋学"作了广博而精微的研究。综合余英时的著述与论说,他对"宋学"的现代诠释主要包括五个方面的内容与精神,即:援释入儒的文化贡献,"内圣外王连续"的儒学理想,"以天下为己任"的士人精神,实证与诠释结合的经学方法,"朱陆之争"的思想线索。