The analysis of networks of ecological throphic transfers is a useful complement to simulation modelling in the quest for understanding whole-ecosystem dynamics. Throphic networks can be studied in quantitive and systematic fashion at several levels. The purpose of this paper is to investigate a system of parabolic equations with discrete time delays describing a simple throphic food network wh...

nematallaheyyeh doctrine in qajar period created some actions and reactions between the two powerful streams of jurdical and monarchy. study of the ups and downs of the triple process is one of the significant issues in the social history of the qajar era. in the present study, three streams mentioned interactions with each other, with regard to the doctrine nematallahyeh what caused of  stagna...

In this study, the relationship between the viewing of television programs (programs toward God, the lessons of the Quran, the Fath) in the fields of Tehran citizens to moral values (Faith, virtue, purification and self-purification, prayer, reading culture, integrity, justice-oriented, good relations with others) have been investigated. The statistical population of this research over 15 years...

The current research examined whether cross-national variation in egalitarianism predicts talent levels and organizational performance. We propose that national variation in egalitarianism predicts country-level talent because egalitarianism influences policymaking at the institutional level and everyday social interactions at the psychological level. We compared the relative impact of institut...

Extracellular tumor acidosis largely results from an exacerbated glycolytic flux in cancer and cancerassociated cells. Conversely, little is known about how tumor cells adapt their metabolism to acidosis. Here, we demonstrate that long-term exposure of cancer cells to acidic pH leads to a metabolic reprogramming toward glutamine metabolism. This switch is triggered by the need to reduce the pro...