The present work reports a comparative study on CuO and 3. 0% Mn-doped CuO nanofibers (NFs) produced by the electrospinning method. State-of-the-art characterization techniques such as Electron Energy Loss Spectroscopy (EELS) and X-Ray photoelectron Spectroscopy (XPS) have been employed to determine the multivalent states and elucidate their electronic structure at the Cu-L3. 2 (2p) e... https://wholesfoodsboxs.shop/product-category/ready-to-eat-foods-chilled/