In response to concerns that distracted driving due to cell phone use has become a threat to roadway safety, many states have passed cell phone bans that prohibit drivers from texting and talking on handheld cell phones. This paper empirically examines the impact of these bans on driver cell phone usage, traffic accidents, and casualties. To distinguish the effect of the bans from confounding f...

The aim of this study was to characterize the effect of typhoid fever on pharmacokinetic parameters of levofloxacin (LF) and compare the pharmacokinetic parameters of the said antibiotic in healthy human volunteers and patients with typhoid fever. Total of 12 subjects were divided into two groups “A” (healthy volunteers) and “B” (typhoid patients). Single oral dose of LF 500 mg was given and 5 ...

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conclusions bacterial infection has been suggested in the pathogenesis of both ss and cs. in addition, h. pylori is a resident of the oral cavity, thus may be involved in the development and progression of these lesions. hence, search for h. pylori antibody in blood of patients with ss is suggested. background sjogren’s syndrome (ss) is a chronic autoimmune disease characterized by lymphocytic ...

‎the harmonic index of a connected graph $g$‎, ‎denoted by $h(g)$‎, ‎is‎ ‎defined as $h(g)=sum_{uvin e(g)}frac{2}{d_u+d_v}$‎ ‎where $d_v$ is the degree of a vertex $v$ in g‎. ‎in this paper‎, ‎expressions for the harary indices of the‎ ‎join‎, ‎corona product‎, ‎cartesian product‎, ‎composition and symmetric difference of graphs are‎ ‎derived‎.