科学Alexa排名

51. Rsc.orgrsc.org

网站简介:The RSC is the largest organisation in Europe for advancing the chemical sciences. Supported by a worldwide network of members and an international publishing business, its activities span education, conferences, science policy and the promotion of chemistry to the public.

52. Behindthename.combehindthename.com

网站简介:The meaning and history of first names.

53. Bls.govbls.gov

网站简介:Principal fact-finding agency for the Federal Government in the broad field of labor economics and statistics. Collects, processes, analyzes, and disseminates essential statistical data to the American public, the U.S. Congress, other Federal agencies, State and local governments, business, and labor.

54. Popsci.compopsci.com

网站简介:Monthly magazine about current science and technology.

55. He.wikipedia.orghe.wikipedia.org

网站简介:Online, free-content encyclopedia in the Hebrew language; a useful reference for assignments and Hebrew lessons related to general content and Area Studies.

56. Head-fi.orghead-fi.org

网站简介:Head-Fi is the meeting place for headphone hi-fi and portable audio enthusiasts.

57. Mnn.commnn.com

网站简介:Environmental news site offering original programs, articles, blogs, videos and how-to guides along with breaking stories. We launched the Mother Nature Network in January 2009. The mnn.com domain was created on 03-Dec-1997.

58. Https://23andme.com/

网站简介:DNA based ancestry testing to help identify your genetic relatives

59. Biomedcentral.combiomedcentral.com

网站简介:An online journal publishing peer-reviewed research across all areas of biology and medicine with immediate, barrier-free access for all, plus commentary, reviews, collaboration tools, and database links.

60. Plos.orgplos.org

网站简介:Advocates the free distribution of science and medical published articles.

61. Metoffice.gov.ukmetoffice.gov.uk

网站简介:Forecasts and data for UK and the world, weather warnings, UV index, maps, marine information and satellite imagery. Describes the commercial weather and environmental services offered.

62. Https://localbitcoins.com/

网站简介:A directory of local buyers and sellers of Bitcoins. Lists the traders closest to your current location.

63. Nature.com/nature/

网站简介:An international journal, published weekly, with original, groundbreaking research spanning all of the scientific disciplines.

64. Ucr.eduucr.edu

网站简介:Official web site offers information on academics, administration, athletics, campus, culture and arts, jobs and facilities.

65. Https://bitcointalk.org/

网站简介:The main Bitcoin discussion forum, includes subforums for technical support, mining, development and economics.

66. Aleks.comaleks.com

网站简介:Provides a complete web based educational environment for K-12 and Higher Education mathematics science, statistics, and business.

67. Citeseerx.ist.psu.educiteseerx.ist.psu.edu

网站简介:Scientific literature digital library and search engine.

68. Nist.govnist.gov

网站简介:USA. Federal agency, cooperating with industry to develop and apply technologies, measurements, and standards.

69. Bbc.co.uk/news/technology/

网站简介:Offers latest news and feature stories about technology with selected video and audio programmes.s.

70. Thermofisher.comthermofisher.com

网站简介:Manufactures analytical instruments plus reagents and consumables, laboratory equipment, software and services for the laboratory.

71. Ssrn.comssrn.com

网站简介:The Social Science Research Network (SSRN) is a multi-disciplinary online repository of scholarly research and related materials providing Tomorrow s Research Today. Authors can share and distribute their research on an interdisciplinary basis at multiple points in its evolution. SSRN s eLibrary, a leading resource in the social sciences and humanities, has downloaded 23 million full-text PDFs and includes over 200,000 papers from 100,000 authors.

72. Foreignpolicy.comforeignpolicy.com

网站简介:Magazine of global politics, economics and ideas. Published bimonthly in print and daily online by the Slate Group, a division of the Washington Post Company.

73. Theguardian.com/environment

网站简介:News and features about the global environment with sections on climate change, conservation, travel, energy, ethical living, food, water and pollution. Includes regular columnists, campaigns and how to get involved.

74. Esri.comesri.com

网站简介:Offers free software, online mapping and GIS training, demos, data, product and service information, user scripts, and related information. Makers of ArcView, ArcGIS and ArcIMS.

75. Hindawi.comhindawi.com

网站简介:Hindawi is a commercial publisher of peer-reviewed journals. Founded in 1997, Hindawi currently employs more than 300 employees and publishes 200+ open access, peer-reviewed journals. Hindawi is a member of several industry organizations including ALPSP, STM, UUKSG, OASPA, and IDPF. Hindawi was also an early member of CrossRef, the scholarly DOI linking organization. All of Hindawi's content is archived in Portico, which provides permanent archiving for electronic scholarly journals.