There exists extensive evidence that people learn positively about themselves. We build on this finding to develop a model of team formation in the workplace. We show that learning positively about oneself systematically undermines the formation of teams. Agents becoming overconfident tend to ask for an excessive share of the group outcome. Positive learning generates divergence in workers' bel...

In this review, most of the information presented will be derived from studies with Escherichia coli K-12 (E. coli) and its related bacteriophages, simply because more is known about methylation in these organisms than in any other. The two methylated bases that have been detected in E. coli are 6-methyladenine (6-meAde) and 5-methylcytosine (7, 18). Since little is known about the biological f...

This study of galactose-induced galactose transport in Escherichia coli K12 showed that in most strains two transport systems having the properties of “galactose permease” and “P-methyl galactoside permease” are responsible for the observed transport. Several strains contain only the galactose transport system but still grow normally on galactose. The regulation of this system was shown to be v...

background: escherichia coli (ecoli) has been considered as the most common agent of urinary tract infection in all regions. recently, increased drug resistance has been lead to some problems in treatment related diseases. so, evaluation of resistance patterns of bacteria in each region could be a valuable guide for empirical treatment. methods: all referred urine sample to kermanshah central l...

A rapid and efficient method for plasmid transformation of Klebsiella pneumoniae M5a1 and Escherichia coli K12 has been developed. The method, which uses a freeze-thaw cycle in the presence of CaCl2 to facilitate DNA uptake, is substantially more efficient for K. pneumoniae M5a1 than the conventional transformation procedure for E. coli. The simplicity and speed of the method makes it very attr...