proton exchange membrane fuel cells (pemfcs) with a dead-ended anode and cathode can obtain high hydrogen and oxygen utilization by a comparatively simple system. nevertheless, the accumulation of the water in the anode and cathode channels might cause a local fuel starvation degrading the performance and durability of pemfcs. in this study, a brand new design for a polymer electrolyte membrane...

background: granulocyte colony stimulating factors (gcsf) are high cost agents commonly recommended for primary and secondary prophylaxis of chemotherapy-induced neutropenia and febrile neutropenia. gcsfs have been shown to be beneficial in some patient subgroups, although they are probably overused in clinical settings. the american society of clinical oncology (asco) guidelines summarize curr...

Fuel cells directly convert chemical energy into electrical power using electrochemical reactions. Solid oxide fuel cell (SOFC) is one of the high-temperature fuel cells that propose a promising future from the standpoint of power generation. In this study, optimization of an SOFC system is performed using Taguchi approach after verification of the model in compare with experimental results. Cu...

in order to implement the cellular manufacturing system in practice, some essential factors should be taken into account. in this paper, a new mathematical model for cellular manufacturing system considering different production factors including alternative process routings and machine reliability with stochastic arrival and service times in a dynamic environment is proposed. also because of t...

Abstract Under the assumption of a low intensity flow incoming requests and high speed their service, M|M|1 system utilization factor model is considered. It estimated for small part observation time. Approximate relations are obtained factor. Its simple probabilistic in form mixture proposed. A comparison with results simulation carried out.