AIMS To compare oesophageal motor responses to gastro-oesophageal reflux (GOR) in 16 healthy controls (group 1) and 25 reflux patients, 15 without (group 2) and 10 with (group 3) oesophagitis. METHODS All subjects underwent 24 hour ambulatory oesophageal pH measurements (5 cm above the lower oesophageal sphincter (LOS)) combined with pressure monitoring (5, 10, and 15 cm above the LOS for oes...

The effects of both wall slip conditions and heat transfer on the magnetohydrodynamics (MHD) peristaltic flow of a Maxwell fluid in a porous planar channel with elastic wall properties have been studied. Mathematical formulation is based upon the modified Darcy’s law. The analytical solution has been derived for the stream function and temperature under the assumptions of small wave number.The ...

Studies on the pathogenesis of urolithiasis have mainly focused on metabolic disorders. However, metabolic disorders alone are not sufficient to explain the problem. In the present study, morphological and urodynamic differences of the upper urinary tract on both the stone and normal side were examined. There were 35 cases of those who had experienced unilateral, recurrent, and/or multiple ston...

Peristaltic flow of hybrid nanofluid inside a duct having sinusoidally advancing boundaries and elliptic cross-section is mathematically investigated. The notable irreversibility effects are also examined in this mathematical research by considering descriptive entropy analysis. In addition, work provides comparison analysis for two distinct models: model (Cu-Ag/water) phase (Cu/water). A compr...

This paper presents a computational approach for finding the optimal shapes of peristaltic pumps transporting rigid particles in Stokes flow. In particular, we consider that minimize rate energy dissipation while pumping prescribed volume fluid, number particles, and/or distance traversed by over set time period. Our relies on recently developed fast and accurate boundary integral solver simula...