In this study a heat exchanger is designed for cooling exhaust gas and an experiment is carried out to investigate the effect of Exhaust Gas Recirculation (EGR) temperature on destruction of the fuel’s availability due to combustion processes in IDI diesel engine cylinder. To serve this aim an exergy analysis is conducted on the engine cylinder which provides all the availability terms by which...

Background: Availability and accessibilityarereported as the main determinants of fruit and vegetable consumption among children. The present study was conducted to assess the status of availability and accessibilityto fruit and vegetable at school and home among Iranian adolescents in Tehran, Iran. Materials and Methods: This cross-sectional study was conducted to assess status of fruit and ve...

Abstract Abstract Background: Availability and affordability of medicines are crucial to achieving success in prevention programs, particularly in developing countries. Objective: The aim of this study was to determine the availability and affordability of cardiovascular medicines for secondary prevention in Tehran province of Iran. Methods: A cross-sectional survey was conducted in Tehran pro...

The impact of the international sanctions on the Central Bank of Iran in 2013 and also accessibility of medicines in this country have received a lot of media coverage. In this study we used the data collected from a group of pharmacies all located in Tehran to assess the potential effects of the banking sanctions on access to asthma medicines. Data were collected from forty community pharmacie...

Maintenance can be the factor of either increasing or decreasing system's availability, so it is valuable work to evaluate a maintenance policy from cost and availability point of view, simultaneously and according to decision maker's priorities. This study proposes a Partially Observable Markov Decision Process (POMDP) framework for a partially observable and stochastically deteriorating syste...