Let Q be the set of all primitive words over a finite alphabet having at least two letters. In this paper, we study the language D(1) of all non-overlapping (d-primitive) words, which is a proper subset of Q. We show that D(1) is a contextsensitive langauage but not a deterministic context-free language. Further it is shown that [D(1)]n is not regular for n ≥ 1. key words: primitive word, non-o...

background an effective emergency referral transport system is the link between the home of the pregnant woman and a health facility providing basic or comprehensive emergency obstetric care. this study attempts to explore the role of emergency transport associated with maternal deaths in unnao district, uttar pradesh (up).   methods a descriptive study was carried out to assess the causes of a...

review articles are more considered because of special target groups, more citations and cheaper to do. this article is reviewing current evidence by choosing relevant ones through a narrative review article. it is going to provide an appropriate model and promotes the quality of review articles by focusing on the principles of writing them and also the common mistakes in this era.