检索与搜索

检索与搜索

作者：jzh

1、google 就不用多说了

2、Scirus

http://www.scirus.com

Scirus是目前互联网上最全面、综合性最强的科技文献门户网站之一。目前Scirus已

将9 千万个网页编入索引中。除了此之外，它还包括1280 万条MEDLINE 文摘；160 万篇

ScienceDirect全文；90万项USPTO 的专利；近66 万篇Beilstein 文摘；近25 万篇IDEAL

全文；10310篇NASA技术报告；将近20万篇来源于E-Print ArXiv 的电子文献；1410 篇来

源于CogPrints 的电子文献；565 种来自Mathematics Preprint Server 的预印本；820 篇

来源于BioMed Central 的全文；565 条来源于Neuroscion 的新闻；465 种来自Chemistry

Preprint Server 的预印本。Scirus 用户可以免费浏览所有检索到的互联网主页的信息。

Scirus 提供的期刊资源可以免费查看题录和文摘。但是，获取全文需要预先注册并支付费

用。

source:

• 12.8 million MEDLINE citations

• 1.6 million ScienceDirect full-text articles

• 900,000 patents from the United States Patent Trademark Office (USPTO)

• 657,000 Beilstein abstracts

• 197,000 e-prints from E-Print ArXiv

• 10,310 technical reports from NASA

• 1,410 e-prints from CogPrints

• 820 BioMed Central full-text articles

• 565 preprints from the Mathematics Preprint Server

• 565 Neuroscion news items

• 465 preprints from the Chemistry Preprint Server

优点：

1。可自己定义使用期刊搜索和网页搜索。非常方便！！！

2 。可轻松搞定文献的数据库来源

3、http://citeseer.ist.psu.edu/cis

CiteSeer is a scientific literature digital library that aims to improve the

dissemination and feedback of scientific literature, and to provide improvements

in functionality, usability, availability, cost, comprehensiveness, efficiency,

and timeliness.

Rather than creating just another digital library, CiteSeer provides algorithms,

techniques, and software that can be used in other digital libraries. CiteSeer

indexes Postscript and PDF research articles on the Web, and provides the following