a bstract background: in recent years, the lack of organ for transplantation has resulted in health planners and authorities in all countries, including iran, paying serious attention to the issue. despite the above-mentioned fact, families with a member affected by brain death are not interested in organ donation. objective: this study is aimed at making an investigation into the decision-maki...

Cells are active components in their environment and constantly adjusting their performance to improve extracellular milieu changing. This approach is reflected their tends of maintaining intracellular homeostasis. When the cells encounter stress or pathologic stimuli, they can undergo a new manner (adaptation) and new steady state for achieving viability and function. If the external stress is...

This paper deals with the Markov modeling and reliability analysis of urea synthesis system of a fertilizer plant. This system was modeled using Markov birth–death process with the assumption that the failure and repair rates of each subsystem follow exponential distribution. The first-order Chapman–Kolmogorov differential equations are developed with the use of mnemonic rule and these equation...