The repair of U.V. damages to DNA in B. subtilis cultures competent for genetic transformation has been studied. The comparison of survival curves for competent and non competent fractions shows that: i) excision repair is more effective in competent than in non competent bacteria; ii) recombination repair is more effective in non competent than in competent bacteria. These facts support the hy...

Abstract The development of the natural resources North and territories with permafrost is an urgent task for countries located in northern regions, solution which complicated by extreme climatic conditions. Competent arrangement base under any structure extremely important task, solved only experienced qualified specialists. This article describes models presented optimal methods technologies ...

today, the real customer oriented must be the prevailing aspect of organizational culture and its requisite would be the real transition in the culture of organizations and the basic attention to customer as the most eminent value and the most important organizational commitment. therefore, the current research has been occomplished in order to explain all relative dimensions and elements of th...

A mating type transformation, involving cell-to-cell contact (abortive conjugation) insyngen 4 of Parameciwn bursaria has been investigated. By autoradiography, transfer of material between the conjugants in normal and abortive conjugation has been shown to occur. The transfer of this material, which includes protein, RNA and DNA, during abortive conjugation has been shown to be necessary if th...