Googlingعلي شيخيان

دكتراي ايمونولوژي و سرولوژي

عضو هيأت علمي دانشگاه علوم پزشكي لرستان

E-mail: sheikhiana@yahoo.com

Scirus Search Engine

The Range of Scientific Content Scirus Covers

Scirus returns results from the whole Web, including access-controlled sites that other search engines don't index. Scirus currently covers over 380 million science-related Web pages,

Including:124 million .edu sites40 million .org sites20 million .ac.uk sites38 million .com sites38 million .gov sitesOver 118 million other relevant STM (In

publishing, "STM publishing" means the scientific, technical and medical field of publishing) and University sites from around the world.

In addition to Web pages, Scirus indexes the following special sources

600,000 e-prints from ArXiv.org 57,700 full-text articles from BioMed Central 23,300 documents from Caltech Coda 3,400 e-prints from Cogprints 87,100 full-text articles from Crystallography Journals Online 28,600 documents from CURATOR 2.4 million documents from Digital Archives 21,400 documents from DiVa 105,000 full text articles from Project Euclid 6,000 documents from HKUST Institutional Repository 314,000 full text articles from Institute of Physics Publishing 23.8 million patent data from LexisNexis

In addition to Web pages, Scirus indexes the following special sources 19.1 million Medline citations via PubMed 75,900 documents from MIT OpenCourseWare 25,200 technical reports from NASA 876,000 full-text theses and dissertations via NDLTD 10,400 documents from Organic Eprints 1890 documents from PsyDok 1.7 million articles from PubMed Central 884,000 documents from RePEc 8.6 million full-text articles from ScienceDirect 474,000 full-text journal articles from Scitation 9,100 articles from SIAM 18,100 documents from University of Toronto T-Space

General Search Tips

To perform a search with Scirus, enter your keyword(s) in the box provided and click on the Search button.

When searching using multiple keywords you can narrow your search by using the + and - characters:

+keyword(s) - all of your search results will contain this word

-keyword(s) - none of your search results will contain this word

Boolean operators

Scirus also supports the Boolean operators AND, OR and ANDNOT

Exact phrase:

You can use quotation marks (“ ”) to search for an exact phrase. For example:

"groundwater pollution" will return results where the exact term "groundwater pollution" appears in the text

Wildcarding

Scirus supports the use of wildcard characters when conducting a search:

Use a question mark (?) to replace a single character anywhere in a word:

te?t finds test and text

?-phenyl finds o-phenyl and p-phenyl

Use an asterisk ( * ) to replace multiple characters anywhere in a word.

It replaces 0 or more characters in the word (i.e. a search for car* will return car as well as carbon, etc.):

parasit* finds parasite, parasitic, parasitology, parasitemia

Abbreviations You can run fielded searches using

abbreviated field terms. You may find the following abbreviations useful: author - au: Title - ti: Journal - jo: keywords - ke: URL - url: domain name - dom: author affiliation(s) -af:

Basic SearchTo perform a search with Scirus,

enter your keyword(s) in the box provided and click on the Search button. Before you begin, you can select up to three datasets in which to run your search from the checkboxes below the search bar:

Three datasets

Journal sources Preferred Web sources Other Web sources

What are Journal sources ?

Journal sources are generally peer-reviewed journals found on the Web and include subscription-based and open access titles.

What are Preferred Web sources

Preferred Web sources are the subset of valuable collections found on the Web, including patents, preprints and eprints (ArXiv and Orgprints), theses and dissertations (NDLTD), technical reports (NASA) and documents found in institutional repositories.

What are other Web sources ?

university Web sitesscientists' homepagesnews pagesgovernment sitessociety homepagescompany homepagesconference information

Advanced Search

Scirus Advanced Search offers you the ability to search on more specific fields.

To begin, enter your keywords and specify in which fields you want that query to search:

The complete documentArticle titleJournal titleAuthor name(s)Author affiliation(s)Keyword(s) ISSN (Part of a) URL

Results Page

Once you've run your query Scirus will return a list of results based on your search parameters.