Positioning the catalysts in front of turbocharger has gained interest over recent years due to earlier onset temperature and positive effect elevated pressure. However, several challenges must be overcome, like presence higher pollutant concentrations absence or insufficient diesel oxidation catalyst volume at this location. In context, our study reports a systematic investigation on pressure ...

Introduction: In radiation therapy of lung tumors, respiratory motion causes target moving, so a larger margin is needed to cover the clinical target volume (CTV). With the margin increasing, a larger volume of normal tissue will be exposed to high-dose.  In this study, dosimetric parameters of normal lung tissue were compared between gated and conventional radiotherapy (RT), u...

background: dental wastes are one of the environmental issues due to toxic and pathogenic agents such as pathological wastes, pharmaceutical and chemical etc have particular sensitivity. the aim of this study was to determine the dental waste management and related factors in the city of ilam. methods: in this cross-sectional study, the studied community was all the sixteen dental clinics in il...

Changing the compression ratio and presence of turbocharger are two important issues, affecting on performance, and exhaust emissions in internal combustion engines. To study the functional properties and exhaust emissions in regards to compression ratio at different speeds, the numerical solution of the governing equations on the fluid flow inside the combustion chamber and the numerical solut...