نتایج جستجو برای: geographical regions

تعداد نتایج: 396299  

Journal: :International Journal of Applied Mathematics, Electronics and Computers 2021

The rapid urbanization of the residential areas in an unplanned and irregular manner causes ecological environmental changes. Understanding this growth is important criterion for developing environmentally friendly policies creating new limits. Although determining boundaries region cannot be connected to a single basic principle, planning can made by making statistical inferences. In regard, s...

Journal: :The Journal of general virology 2000
T L Goldberg E C Hahn R M Weigel G Scherba

Porcine reproductive and respiratory syndrome virus (PRRSV) ORF5 gene sequences were generated by RT-PCR from 55 field isolates collected in Illinois and eastern Iowa. Spatial and temporal patterns of genetic variation in the virus were examined on a local geographical scale in order to test the hypothesis that the genetic similarity of PRRSV isolates (measured as their percentage pairwise ORF5...

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