Characterization of lime carbonates in plasters from Teotihuacan,Mexico: preliminary results of cathodoluminescence and carbon isotope analyses

This study characterizes the degree of calcination of lime in lime plaster samples from Teotihuacan, the capital of a regional state in prehispanic Central Mexico. Lime plaster production consists of multiple steps, from the firing of raw materials to the mixing of lime and aggregate and the final application. While previous studies have focused on the compositional variability, specifically the recipe of lime plasters and mortars, the characterization of lime itself has not been sufficiently addressed. In this study, cathodoluminescence analysis coupled with petrographic and image analyses were employed to examine the degree of calcination of lime. The results of cathodoluminescence petrography were further examined through stable carbon isotope and ¹⁴C measurements. It appeared that the results of cathodoluminescence analysis are consistent with those of other analytical methods and that there are diachronic changes in the degree of calcination of lime among lime plaster samples. This implies changes in the organization of lime production, specifically the consistency in the control of firing temperature.     

旅游景观美的观赏研究

本文论及了旅游景观美观赏的重要性和复杂性、旅游景观美的观赏要求,进行了旅游景观美的观赏分类。     

沂源鲁山旅游区旅游资源开发利用研究

根据实地考察资料,在全面分析旅游区旅游资源类型、开发条件、现存问题等方面的基础上,提出了对该区旅游资源进一步开发利用的策略与措施。     

城市住宅小区可持续发展研究

分析了我国住宅小区目前存在的问题,探讨了住宅小区可持续发展的目标体系,并提出实施可持续发展的措施。     

Voices of Change: Short Stories by Saudi Arabian Women Writers: Edited and translated by Abubaker Bagader,Ava M. Heinrichsdorf,Deborah S. Akers. Additional Translations by Abdul-Aziz Al-Sebail

Book reviewed in this article: Within the Circle: Parents and Children in an Arab Village: Andrea B. Rugh