The energy trade is an important pillar of each country’s development, making up for the imbalance in production and consumption fossil fuels. Geopolitical risks affect various countries to a certain extent, but causes geopolitical are complex, also involves many aspects, so impact geopolitics on complex. Based monthly data from 2000 2020 17 emerging economies, this paper employs fixed-effect m...

his study aimed to investigate factors affecting the revenue share of Iranian tomato paste exporting companies. Flexible estimation method was used on a two-dimensional panel data set including 224 observations from 14 tomato paste manufacturing and exporting companies and 16 importing countries during 2005-12. Results showed that value added per employee in manufacturing or exporting companies...

Hsp70 chaperones mediate folding of proteins and prevent their misfolding and aggregation. We report here on a new kind of Hsp70 interacting protein in mitochondria, Hep1. Hep1 is a highly conserved protein present in virtually all eukaryotes. Deletion of HEP1 results in a severe growth defect. Cells lacking Hep1 are deficient in processes that need the function of mitochondrial Hsp70s, such as...

When a natural gas pipeline ruptures, the adjacent upstream and downstream automatic control valves (ACV) should close quickly to prevent leakage or explosion. The differential pressure set point (DPS) at each valve location is the main criteria for value setting in ACV actions. If the DPS is not properly adjusted, the ACV may mistakenly close or it may not take any actions at a proper ti...

sugar, including processed goods in the world in the raw material for the production of agriculture and it is a strategic commodity. the intent of this research is to approach the game theory to analyze the relationship between import and export of sugar, iranian and brazil. the impact of changes in world prices and import tariffs, the welfare of the brazilian study. the data used in this study...