Google 学术搜索
学术搜索
化学 • 材料, 热门类期刊, - X-MOL
顶级期刊最新论文图文内容,出版社网站每日同步更新,点击标题直达论文原文,自定义关注的期刊,覆盖PubMed的论文库,快速方便精准的找到您想要的论文
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爱学术是一家专业的学术文献分享平台,覆盖各个行业期刊论文,学位论文,会议论文,标准,专利等各类学术资源,是国内最大的学术文献交流中心和论文资源免费下载网站。
科普中心:以科学的方式消除障碍
PubTator Central-NCBI-NLM-NIH
PubTator Central (PTC) is a Web-based application that provides computer-annotated biomedical concepts, such as genes and mutations, in PubMed citations and PMC full-text articles.
引用:引文引人入胜,以便进行更好的研究
scite helps researchers better discover and understand research articles by showing how they have been cited. Researchers can read the context of citation and understand if it provides supporting or contrasting evidence for the cited claim. By searching over 1.2b Smart Citations researchers can find expert analyses and opinions on all topics.
SCI-HUB.Pub - Sci-hub Available Websites
Sci-hub.pub provides the latest sci-hub available websites.
CiteSeerX
CiteSeerX
Directory of Open Access Journals – DOAJ
DOAJ is a unique and extensive index of diverse open access journals from around the world, driven by a growing community, committed to ensuring quality content is freely available online for everyone.
CORE – Aggregating the world’s open access research papers
The world’s largest collection of open access research papers
科学中心
Electronic library. Download books free. Finding books | Z-Library. Download books for free. Find books
Sci-Hub: removing barriers in the way of science
Sci-Hub website. Get free access to academic journals. Download research papers for free from ScienceDirect, IEEE, Wiley, Springer, Nature and others
电子图书馆。 免费下载书籍。 寻找书
arXiv.org电子打印存档
CAS Source Index (CASSI) Search Tool
CAS Source Index (CASSI) Look Up Tool
RefSeek - 学术搜索引擎
Academic search engine for students and researchers. Locates relevant academic search results from web pages, books, encyclopedias, and journals.
Semantic Scholar | AI-Powered Research Tool
Semantic Scholar uses groundbreaking AI and engineering to understand the semantics of scientific literature to help Scholars discover relevant research.
Free PDF Search Engine
Free PDF eBook and PDF manual for Business, Education,Finance, Inspirational, Novel, Religion, Social, Sports, Science, Technology, Holiday , Medical ...
Advanced search - PhilPapers
Electronic library. Download books free. Finding books
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本站是国内最大、影响最广的SCIHub论文下载链接站,24小时自动检测SCI-Hub的最新可用网址,免费下载SCI论文,为广大科研工作者提供志愿服务,欢迎使用。
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万方数据知识服务平台
万方数据知识服务平台-中外学术论文、中外标准、中外专利、科技成果、政策法规等科技文献的在线服务平台。
国家哲学社会科学学术期刊数据库
系统登录
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中国人民大学复印报刊资料-中国人民大学复印报刊资料
OATD – Open Access Theses and Dissertations
小鲸鱼文献,一站搞定文献下载!
小鲸鱼文献是一个研究生必备的文献下载导航网站!
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快论文,最专业的论文写作排版神器.