Guar gum, a plant colloid, costs less than agar and is better suited for growing thermophilic bacteria, but is also more difficult to handle, being more viscous and less transparent. The bacterial polysaccharide xanthan is cheaper as well but forms weaker jellies that, as with carrageenan, might result in puncturing its surface. Other colloids, like alginate (from brown seaweed) and gellan gum (from a bacterium), don’t set solely based on temperature and require additives for gelation. These additives might interfere with microbial growth and make the preparation of those jellies less handy than agar plates.
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1.5#楼附着式升降脚手架的架体集中堆载建筑材料,超过专项施工方案设计允许堆载值。(违反《房屋与市政工程生产安全重大事故隐患判定标准(2024版)》第十四条第三款,属于重大事故隐患。)。Line官方版本下载对此有专业解读
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