Although initially originated as a totally empirical relationship to explain the volume of trade between two partners, gravity equation has been the focus of several theoretic models that try to explain it. Specialization models are of great importance in providing a solid theoretic ground for gravity equation in bilateral trade. Some research papers try to improve specialization models by addi...

This paper aims to identify key challenges facing Iran and South Korea in their bilateral trade and investment relations. In particular, it is concerned with the policy implications which can be useful for policy makers and business people of both countries. For this purpose, we review and analyze the recent developments of the Iranian economy and bilateral trade and investment relations betwee...

The oral cavity and teeth are systematically affected by both external internal factors (unhealthy lifestyle, improper nutrition, weakened immune system, seasonal allergies, infections, various complications of the gastrointestinal tract, etc.). Based on above, we aimed to develop toothpastes for daily use, highly effective, safe, containing components natural origin, hygienic purpose cosmetic ...