3D modeling of Pd/α-Al2O3 hollow fiber membrane by using computational fluid dynamic for hydrogen separation from H2/N2 mixture was considered in steady and unsteady states by using the concept of characteristic time. Characteristic time concept could help us to design and calculate surface to volume ratio and membrane thickness, and adjust the feed conditions. The contribution of resistance be...

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this paper presents a study examining how persian speakers use metaphoric gestures to represent different adverbs of time, and what these gestures reveal about the concept of time in their minds. a questionnaire containing 10 ambiguous questions, which made the participant use different adverbs of time, was given to 22 participants. they were filmed while trying to answer the questions. the cor...

introduction: accurate water demand modeling for the city is very important for forecasting and policies adoption related to water resources management. thus, for future requirements of water estimation, forecasting and modeling, it is important to utilize models with little errors. water has a special place among the basic human needs, because it not hampers human life. the importance of the i...

the concept of casualty or the causal argument is a concept that draws attention of the philosophers over the time. among those who consider the causal argument is thomas aquinas, a famous philosopher of the scholastic era. among contemporary muslim philosophers, allameh mohammad hossein tabatabaee, has also worked on this concept. the aim of the paper is to study around the concept of casualty...