18024
As - spun and calcined nanofiber diameters and morphologies are evaluated with scanning ( SEM ) and transmission ( TEM ) electron microscopies , whereas crystalline microstructural interpretations of ZnO and Mg ( x ) Zn ( 1 - x ) O are conducted with wide - angle X - ray diffraction spectra ( XRD ) .
 Chemical: ZnO; Chemical: Mg ( x ) Zn ( 1 - x ) O
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 Chemical: ZnO; Chemical: Mg ( x ) Zn ( 1 - x ) O