明早期官窑青花瓷器所用钴料的产地特征和晕散成因分析

为揭示明早期官窑青花瓷器所用钴料的产地特征和"色散而不收"的原因,以明早期官窑青花瓷器和阿联酋采集的伊斯兰蓝彩器标本为研究对象,采用能量色散X射线荧光光谱仪(EDXRF)和激光诱导击穿光谱分析(LIBS)分析方法分别对青花或者蓝彩纹饰部位以及釉的常规元素组成含量和氧化硼含量进行测试分析。结果表明:1)景德镇明早期青花瓷器所用钴料与伊斯兰蓝彩器标本类似,均为含有硼元素的经过预熔处理的低锰型钴料。2)明早期官窑青花瓷器"色散而不收"的主要原因在于其采用了含有硼的高钠、高钙以及低铝、低硅的预熔处理过的钴玻璃料。研究结果从硼元素角度佐证了明早期官窑青花瓷器所用的进口钴料可能来自于伊斯兰地区,为今后青花钴料的产地研究提供了新的视角和数据。     

Stone technology at the Middle Pleistocene site of Mata Menge,Flores, Indonesia

The stone technology from Mata Menge on Flores, Indonesia, is described, providing the first detailed analysis of the largest stone artefact assemblage from a stratified and securely dated Middle Pleistocene site in Southeast Asia. Technological analysis indicates a reduction sequence based on the centripetal, or “radial”, reduction of transported blanks. The implications for early hominin behaviour on Flores are considered.     

Islamic Law: a Review Essay

Book reviewed in this article: Crime and Punishment in Islamic Law: Theory and Practice from the Sixteenth to the Twenty-first Century: Rudolph Peters