Abstract Fowl pox vaccine is produced in the Razi Institute for almost half a century and has a favorable and productive yield in poultry flocks and has provided complete satisfaction to the poultry breeder. In terms of comparing the efficacy of this vaccine with imported vaccines, the following research was conducted. In this study, based on the latest protocols of European Pharmacopeia and O...

an inactivated trivalent fowl cholera vaccine consisted of serotypes 1, 3 and 4 pasteurella multocida strains was prepared. the vaccine provided 70-100% protection against challenge with homologous starins. elisa assay showed a considerable increase in antibody titer after towice vaccination of 8 weeks chickens. it was found that the trivalent vaccine can induce immunogenic response in vaccinat...

We use a special Canadian dataset containing both literacy test scores and standard labour market variables to examine the impact of literacy on immigrant earnings. Having a literacy measure allows us to examine issues related to discrimination and the sources of lower returns to foreign acquired education and experience among immigrants. We find that the native-born literacy distribution (asse...

This study introduces the concept of ‘digital diversity’ to refer to the increasing workforce heterogeneity that stems from the recent rise of digital natives in the workforce. While digital diversity is expected to promise innovation and efficiency, it may also give rise to organizational challenges. The nature of the promise and challenge of digital diversity as well as how it is perceived ac...

This article reports key findings of a study which investigated the use of technology by 569 'digital natives' students for English Language learning and recreational purposes. Their views on the applicability of technological tools such as facebook, blogging and skype for English Language teaching and learning were also investigated. The findings showed that although the students expressed pos...