Experimental and numerical investigation on a trimaran airwake, geometry modification.

The aerodynamic interaction between a helicopter and a trimaran ship's flight deck can be complex and have an impact on handling quality and performance, especially in turbulent conditions. This article presents research on the flight deck geometry of a trimaran vessel without the presence of a helicopter. Both Particle Image Velocimetry (PIV) and computational fluid dynamics (CFD) were used to analyze the effect of wind velocity on air pressure in the flight deck region.

Assessment of hospitalization and mortality from exposure to PM using AirQ modeling in Ilam, Iran.

The aims of this study were to assess the health impact of PM on inhabitants and to investigate the trend of PM concentrations in Ilam, Iran, from 2012 to 2015. For these aims, daily average concentration of PM was obtained from continuous monitoring stations in the study area. Mortality and morbidity due to PM were assessed by AirQ software developed by World Health Organization (WHO).

Which is better for optimizing the biosorption process of lead - central composite design or the Taguchi technique?

The aim of this study is to evaluate central composite design (CCD) and the Taguchi technique in the adsorption process. Contact time, initial concentration, and pH were selected as the variables, and the removal efficiency of Pb was chosen for the designated response. In addition, face-centered CCD and the L orthogonal array were used for the experimental design.