梁山夫妻大办离婚庆典，两人亲自把喜字剪开。
让人意想不到的是，其中还有产妇和6个月孕妇。
　　我竟然才知道！写essay和research paper必用的17个网站
　　虽然还是Beta版，但个人已觉得现在已经是很好很强大了，Google学术搜索滤掉了普通搜索结果中大量的垃圾信息，排列出文章的不同版本以及被其它文章的引用次数。略显不足的是，它搜索出来的结果没有按照权威度(譬如影响因子、引用次数)依次排列，在中国搜索出来的，前几页可能大部分为中文的一些期刊的文章。
　　Scirus 是目前互联网上最全面、综合性最强的科技文献搜索引擎之一，由Elsevier科学出版社开发，用于搜索期刊和专利，效果很不错!Scirus覆盖的学科 范围包括：农业与生物学，天文学，生物科学，化学与化工，计算机科学，地球与行星科学，经济、金融与管理科学，工程、能源与技术，环境科学，语言学，法学，生命科学，材料科学，数学，医学，神经系统科学，药理学，物理学，心理学，社会与行为科学，社会学等。
　　3、http://www.base-search.net/
　　BASE是德国比勒费尔德(Bielefeld)大学图书馆开发的一个多学科的学术搜索引擎，提供对全球异构学术资源的集成检索服务。它整合了德国比勒费尔德大学图书馆的图书馆目录和大约160个开放资源(超过200万个文档)的数据。
　　4、http://www.vascoda.de/
　　Vascoda是一个交叉学科门户网站的原型，它注重特定主题的聚合，集成了图书馆的收藏、文献数据库和附加的学术内容。
　　与google比较了一下发现，能搜索到一些google搜索不到的好东东。它界面简洁，功能强大，速度快，YAHOO、网易都采用了它的搜索技术。各位可以一试。
　　Google在同一水平的搜索引擎。是推出的，Web result部分是基于Google的，所以保证和Google在同一水平，另外增加了Amazon的在书本内搜索的功能和个性化功能：主要是可以记录你的搜索历史。现在还是Beta，不过试用后感觉很好，向大家推荐一试，不过缺憾是现在书本内搜索没有中文内容。
　　严格意义上讲不是搜索引擎，是连接搜索引擎和网络用户的信息立交桥。新一代的搜索引擎应运而生，Ixquick meta-search正是目前最具光芒的新星。但是对于大多数国内用户来说，Ixquick还很陌生。Ixquick众多独特的功能我不一一介绍了，只介绍我们最关心的，搜索数据库密码。
　　使用方法：先进入Ixquick，以“Proquest”数据库为例。填入Proquest Username Password History Online后点击search，看看出来的结果，第一页中第6个，proquest的username和password赫然在目，别急，再看第4个结果“HB Thompson Subion Online Databases”，即http://homework.syosset.k12.ny.us/onlinedbs/HBTDatabases/，进入后发现这是一个密码页，选择Magazines & Journals栏，就有 EBSCO、Electric Library Elementary、Electric Library Elementary、ProQuest Platinum (in school)、ProQuest Platinum (remote)等众多数据库的密码，都有uesrname和password，随便试一下EBSCO，OK，成功登陆。
　　cmu的作品，对搜索的内容进行分类，这样可以有效地做出选择，比较有特色。可实现分类检索，检索速度也很好，如EBSCO 密码几分钟就可找一大堆 .
　　User ID: mountain
　　Password: ridge
　　这个密码可以试试。
　　一个检索免费paper的好工具。进入网页以后，可以看到他有三个功能，driectory web article ，其中article对我们很有帮助，你可以尝试输入你要找的文章，会有很多发现的!
　　10、/Sample
　　感觉不是很好用，内容也不是太多，主要靠用户添加网址，提供信息的搜索引擎，搜索功能也比较差，输入常见的关键词，往往找不到相匹配的内容。
　　现点击后或跳转到，在此搜索引擎里可以搜索到超过千万种化学品信息或相应的供应商，与Chemblink有点相似，但提供的化学品理化信息没有Chemblink详细，与其不同的是该搜索引擎可提供化学品结构式搜索(主页上有在线绘制化学结构式的搜索框)。
　　OJOSE (Online JournalSearch Engine，在线期刊搜索引擎)是一个强大的免费科学搜索引擎，通过OJOSE，你能查找、下载或购买到近60个数据库的资源。但是感觉操作比较复杂。
　　13、http://citeseer.ist.psu.edu/
　　一个关于计算机和信息科学的搜索引擎。
　　14、http://hpsearch.uni-trier.de/
　　专家个人主页搜索引擎
　　为了给读者用户提供一个方便快捷的查阅国外各类期刊文献的综合网络平台，中图公司组织开发了cnpLINKer(cnpiec LINK service)在线数据库检索系统，并正式开通运行。cnpLINKer即“中图链接服务”，目前主要提供约3600种国外期刊的目次和文摘的查询检索、电子全文链接及期刊国内馆藏查询功能.并时时与国外出版社保持数据内容的一致性和最新性.
　　点评：只提供了外文检索的功能，但是无法得到全文。个人认为不是很理想。
　　百度国学目前能提供上起先秦、下至清末历代文化典籍的检索和阅读。内容涉及经、史、子、集各部。
　　17、http://infomine.ucr.edu/
　　NFOMIN是由加州大学、维克森林大学、加州国立大学、底特律大学等大学图书管理员建立的学术搜索引擎。它主要为大学职员、学生和研究人员提供在线学术资源
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