"In this paper, we investigate bounds of the coefficients for subclass analytic and bi-univalent functions. The results presented in paper would generalize improve some recent works other authors."

Backscatter and attenuation coefficient estimates are needed in many quantitative ultrasound strategies. In clinical applications, these parameters may not be easily obtained because of variations in scattering by tissues overlying a region of interest (ROI). The goal of this study is to assess the accuracy of backscatter and attenuation estimates for regions distal to nonuniform layers of tiss...