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1 南开大学精品课程 开放资源 馆员登记
  ...
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2 NARCIS - National Academic Research and Collaborations Information System 开放资源 馆员登记
  NARCIS - National Academic Research and Collaborations Information System NARCIS is the main national portal for those looking for information about researchers and their work. Be...
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3 National Science Digital Library (NSDL) 开放资源 机器抓取
  The NSDL was created by the National Science Foundation in 2000 to provide organized access to high quality online resources and tools that support innovations in teaching and lear...
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4 National University of Singapore libraries Document Delivery Service 未开放资源 馆员登记
  This service aims to provide journal articles, book chapters or conference papers that are NOT in any NUS Libraries' collection to the following groups: •NUS Staff & Students ...
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5 NERC--Oceans and Atmosphere 开放资源 馆员登记
  Natural processes and human activities cause the Earth's climate to vary, over seasons, years and decades. The oceans - through continual interaction with the atmosphere - play a m...
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6 NetLibrary--Ebooks 未开放资源 馆员登记
  NetLibrary® Now Part of the EBSCO Publishing Family of Products EBSCO’s mission has always been to better serve research by offering the strongest possible collection of materials ...
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7 Network Repository 开放资源 机器抓取
  Network Repository is the first interactive data repository for graph and network data. It hosts graph and network datasets, containing hundreds of real-world networks and benchmar...
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8 Notre Dame OpenCourseWare 开放资源 馆员登记
  Notre Dame OCW is a free and open educational resource for faculty, students, and self-learners throughout the world. Because Notre Dame OCW does not grant certificates, credits or...
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9 NSSN:A National Resource for Global Standards 开放资源 专家推荐
  在线免费查询全球600多家标准组织与专业协会制订的225,000多条标准的目录,提供获取全文的途径。;The NSSN: A National Resource for Global Standards is a search engine that provides users with standards-related information from...
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10 NSTL参考咨询系统 开放资源 馆员登记
  考咨询是NSTL为解决用户在查询利用科技文献过程中遇到的问题或疑问而设立的一项服务,用户可通过实时咨询的方式在线与咨询员交流,或通过非实时咨询途径提出问题。咨询前请先浏览“已回答问题”栏目,或许可以在那里得到答案。所提问题及其答复可能被加入到已回答问题库之中,供其他人参考借鉴。用户个人信息不会被公开。 实时咨询服务时间为工作日(周一至周五)的上午8:30-...
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