Katerinis and Tsikopoulos (Graphs. Combin. 12 (1996) 327) give su6cient conditions for a regular bipartite graph to have a perfect matching excluding a set of edges. In this paper, we give a necessary and su6cient condition for a bipartite graph to have an f-factor containing a set of edges and excluding another set of edges and discuss some applications of this condition. In particular, we obt...

The aim of this study was to investigate the impact climatic variables (minimum temperature, maximum average precipitation, and precipitation deviation) on yields pistachio, banana, mango in cold, hot–arid, hot–humid, temperate–humid climates using Just–Pope function. function is a relatively new approach context. most effective were identified by stepwise regression Feiverson algorithm. Data c...

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The studies were performed on samples of broiler carcasses from 13 different Bulgarian poultry slaughterhouses in 2008. Neck skin samples from 327 chilled broilers were examined for presence of Salmonella spp. All isolates were serologically typed. Positive samples were 86/327 or 26.29% of all studied broiler carcasses. Contaminated samples originated more frequently from South Bulgaria as comp...