28751
A compact mixed layer is obtained with a global roughness of 0 . 4 nm and 10 - 15 % vertical extension in the range 1 . 5 - 6 nm .
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Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 None