Scirus
http://www.scirus.com/srsapp

Scirus is a science-focused internet search engine, offering a combination of free Web information and journal content. Web sources include research institutes, governments, scientific organizations, conferences, scientist and company homepages worldwide. Scirus uses a dictionary with over 1.6 million scientific terms, unique pattern recognition tools and linguistic analysis, to classify the content type and relevance of 250 million pages. Scirus searches bibliographical information and specific content types.