Coronaviruses are an association of viruses which lead sicknesses in mammals and birds. The Common symptoms that affect humans respiratory tract infections, fever, headache, etc.In this review, we highlight the development coronaviruses recent two decade, include simpleacute syndrome (2002-2003), middle east (2012) coronavirus disease 2019 (2019-2020).

Fictional literature has experiencedan increasing and stunning growthof women writers in the past two decades. In terms of quality and quantity, theincrease was to the extent that nowadays women’s names are mentioned sometimeseven more than men’s amongthe distinguished writers ofcontemporary Iranianliterature. On the other hand, these authors have often chosen the novel astheir main literary fo...

fictional literature has experiencedan increasing and stunning growthof women writers in the past two decades. in terms of quality and quantity, theincrease was to the extent that nowadays women’s names are mentioned sometimeseven more than men’s amongthe distinguished writers ofcontemporary iranianliterature. on the other hand, these authors have often chosen the novel astheir main literary fo...

The article reveals the trends of Russian intra-industry trade in period 2001–2018 with twenty largest partners, united three groups, namely developed economies, developing countries and CIS states. Intra-industry was estimated using data for export import each 6-digit Harmonized Commodity Description Coding System product groups. authors use Fontanier — Freudenberg Grubel Lloyd indices to dete...