Avian influenza (AI) H9N2 is a low pathogenic virus subtype belonging to Orthomyxoviridae family. Given the prevalence of this subtype as an infectious agent in poultry industry, special attention has been always directed toward the development of vaccine production against this infection. The vaccine of this infection is produced by killing the virus and using a mixture of inactivated antigen ...

one of the consequences of poor management and operation of irrigation systems, poor water delivery and distribution channels and divisions and consequently improper distribution of water level downstream. the study of simulation and performance evaluation software using hydrodynamic sobek varamin irrigation is done. in order to evaluate the network performance and compare the results of simula...

We examine multilateral bargaining in vertical supply relationships which involve an upstream manufacturer who sells through two competing retailers to end consumers. In these relationships the negotiations are inter-dependent and a bargaining externality may arise across the retailers. In addition, the timing by which the manufacturer negotiates with the retailers becomes important. The manufa...