In the above paper, there is a minor sign mistake that affects the derivation of the ray tracing algorithm and trapping beam-width formula. In this erratum, this minor mistake is explained with the ...

Primary sclerosing cholangitis (PSC) is a chronic, progressive disease of the bile duct system. The bile duct system carries bile from the liver and gallbladder into the first part of the small ...

In this paper, the narrow-angle parabolic equation (NAPE) model applied on atmospheric ducts is solved by using the improved discrete mixed Fourier transform (IDMFT) method which is an efficient form ...