Adhesion is an important virulence trait of Vibrio alginolyticus. Bacterial adhesion is influenced by environmental conditions; however, the molecular mechanism underlying this effect remains unknown. The expression levels of flrA, flrB and flrC were significantly downregulated in adhesion-deficient V. alginolyticus strains cultured under Cu(2+), Pb(2+), Hg(2+) and low-pH stresses. Silencing th...

Flagellum-mediated motility of Vibrio fischeri is an essential factor in the bacterium’s ability to colonize its host, the Hawaiian squid Euprymna scolopes. To begin characterizing the nature of the flagellar regulon, we have cloned a gene, designated flrA, from V. fischeri that encodes a putative -dependent transcriptional activator. Genetic arrangement of the flrA locus in V. fischeri is simi...

this study explores the effect of online annotations via interactive white boards (iwbs) on reading comprehension of iranian efl learners. to this aim, 60 students from a language institute were selected as homogeneous based on their performance on oxford placement test (2014).then, they were randomly assigned to 3 experimental groups of 20, and subsequently exposed to the research treatment af...

This paper aims to investigate the problems associated with reading Arabic as a foreign language. Workers in field of teaching language must have noticed that learners face some lead hindering or slowing down their progress skill. tried pinpoint difficulties non-native learners, and different factors pertaining those problems. An empirical tool, be described below, was used achieve objectives t...

Self-regulation is the ability to regulate one’s cognition, behavior, actions, and motivation strategically and autonomously in order to achieve self-set goals including the learning of academic skills and knowledge. Accordingly, self-regulated learning involves self-generated and systematic thoughts and behaviors with the aim of attaining learning goals. With that in mind, this study aimed to ...