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石材病症的预防及治理 被引量:3
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作者 刘斌 《石材》 1999年第3期18-20,共3页
随着石材在建筑装饰领域越来越广泛的使用,随之而来的石材“病症”也困扰着越来越多的建筑商和业主。这些病症不但大大降低了石材的装饰效果,而且缩短了石材的使用寿命。其问题主要来自于三方面:一是石材内部的一些物质成份与大气中的... 随着石材在建筑装饰领域越来越广泛的使用,随之而来的石材“病症”也困扰着越来越多的建筑商和业主。这些病症不但大大降低了石材的装饰效果,而且缩短了石材的使用寿命。其问题主要来自于三方面:一是石材内部的一些物质成份与大气中的物质发生化学反应而形成的; 展开更多
关键词 石材 锈斑 湿痕矸 盐类晶化 预防 治理
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Optical Resolution of DL-Tartaric Acid Mediated by Diastereomeric Salts Crystallization: A Useful Method for Exploring and Optimizing Experimental Conditions 被引量:1
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作者 LolaKokila 蔡水洪 陈孔常 《Chinese Journal of Chemical Engineering》 SCIE EI CAS CSCD 2002年第2期244-248,共5页
A response surface modeling approach for simultaneous optimization of optical purity and yield was applied to the resolution of tartaric acid to study the effects of both the amount of the solvent and the amount of th... A response surface modeling approach for simultaneous optimization of optical purity and yield was applied to the resolution of tartaric acid to study the effects of both the amount of the solvent and the amount of the resolving agent a-methylbenzyl amine on the resolution results. The direction of changing the experimental conditions was determined from the initial response study, and expected high yield of the pure L(+)-tartaric acid-L(-)-a-methylbenzyl amine salt was obtained. 展开更多
关键词 RESOLUTION optimization central composite rotatable design modeling
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