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- Viser Technology Pte Ltd
- Publication date
- 20/06/2019
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No full textPVC管材钙锌稳定剂替换铅盐稳定剂后,铁质真空罐内水的颜色由无色变成深红色,主要是三价铁离子与β-二酮类物质反应造成,对环境造成了一定污染,将铁质真空罐换成PE真空罐后,深红色水变成淡黄色水,而且选择铁离子含量低的轻钙或者天然重钙,也可以改善真空罐内水的颜色。</jats:p
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- Publication date
- 01/01/2005
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- 01/01/2003
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- 01/01/2004
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- 01/01/1998
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No full text紫球藻是一种有较大经济价值的海洋单细胞红藻,其生长过程中合成的藻红蛋白、高不饱和脂肪酸和紫球藻多糖等多种生物活性产物具有广阔的应用前景及较大的潜在市场。国外有关学者已经对紫球藻进行了相关的开发研究并取得了良好的进展,但国内在该领域的研究较少.本文综述了紫球藻的生物学和培养特性、经济价值和开发前景等相关问题,以期引起国内有关学者对紫球藻的研究和开发兴趣
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- Publication date
- 01/01/2003
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- Science China Press., Co. Ltd.
- Publication date
- 01/12/2003
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- 01/01/2004
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- 01/01/2005
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