Henry Samueli School of Engineering and Applied Science;
University of California;
Los Angeles;
CA;
USA;
School of Life Sciences;
Jilin Agricultural University;
Changchun;
China;
School of Engineering Technology;
Purdue University;
West Lafayette;
IN;
USA;
School of Agriculture;
Purdue University;
West Lafayette;
IN;
USA;
Walnut; Shell; Ultrasound-Assisted; Extraction; Total; Phenolic; Content; (TPC); Particle; Size; SEM; Analysis;