Recent research by Peg Nopoulos, Jessica Wood and colleagues at the University of Iowa illustrates just how difficult it is to untangle nature and nurture, even at the level of brain structure.
Introduced different molecular weight PEG in chitosan by solvent casting method, the blending system had good compatibility, reached homogeneous phase of the thermodynamic level.
用溶液浇铸法在壳聚糖中引入的不同分子量的聚乙二醇，共混体系相容性好，实现了热力学水平上的均相。
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The central bank let the currency reach 7.1413 per dollar on Thursday, the highest level since it scrapped a dollar peg in July 2005 and allowed it to float in managed bands.