Objective: The purpose of this retrospective clinical and radiographical study was to evaluate the treatment outcome of root canal system obturated by passively fitting cone of resin-coated gutta-percha with a dual-cured version of EndoREZ sealer compared with AH Plus sealer and gutta-percha.

Methods Sputum samples from patients with clinically diagnosed legionella pneumonia according to manifestations and serum antibody results were detected for legionella DNA with a duplex polymerase chain reaction(DPCR)method.

This paper studies the association rule rough entropy mining algorithm and double clustering algorithm,designs a personalized search engine which is based on the traditional search engine.

By adopting a "double focus",Fiske intends to overcome the weak points of culturalism and structuralism,and thus understand the popular culture in a more extensive way.