MEDLINE is one of the most important bibliographical information sources for biologists and medical workers. Its PubMed interface supports Boolean queries, which are potentially expressive and exact. However, PubMed is also designed to support simplicity of use at the expense of query expressiveness and exactness. Many PubMed users have never tried explicit Boolean queries. We developed a Java ...

introduction:   the aim of this survey was to illustrate statistical information about endodontic research published in pubmed index journals from the different universities of iran. materials and methods: a pubmed search was performed to retrieve the endodontic publications of authors affiliated to different universities of iran. abstracts were reviewed and unrelated articles were omitted. cit...

In order to explain the effects of exposure on the neurobehavioral development of , a two generations-one nest reproductive test was used. Wistar were exposed to fluoride and arsenic for two generations. The results demonstrated that: with the increasing concentrations of fluoride and arsenic, the positive rates of early physiological development and nerve reflex were decreased obviously, and t...