发布时间：
期刊
如果想要代购的话，应该找专门的代购。
letter和article都是自然的论文，可以翻译为通讯论文，只是letter要求文章比较短，控制字数篇幅之类的，article就是可以比较详细，长短不限制，是两个档次，letter略次于article，对于引用率有影响！
干细胞准备就绪——Wadman梅雷迪思
鉴定人脑渗透PDE9A利用铅作为一种快速勘察设计优化策略和化学启用抑制剂帕特里克河Verhoest *，加普罗克斯，拉富伦斯，迈克尔科曼，洛伊丝Chenard，的Christopher J Helal，王新军侯，罗宾克莱曼，刘升平，埃里克马尔，弗兰克学Menniti，施密特的Christopher J，米歇尔Vanase -弗劳利，安妮施密特，罗伯特D ·威廉姆斯，冯检基纳尔逊，卡里河丰塞卡和斯皮罗斯里拉*神经化学，辉瑞全球研究和发展，东角道，格罗顿，康涅狄格州06340j的医科大学。化学。，2009，52（24），页7946-7949分类号：1021/jm9015334出版日期（网络）：2009年11月17号 版权所有© 2009年美国化学学会
于2007 年在巴厘岛召开的联合国气候会议上，谈判达成了世界关于《京都议定书 》 的后续两年的路径设置。然而，甚至是最乐观的代表也意识不到稳定大气二氧化碳浓度是一项巨大的任务。
美国《科学》杂志为周刊 一年51期当今世界上，许多国家（特别是发达国家）都有名为《科学》（Science）、年代久远、影响卓著的科学刊物。 美国《科学》杂志 英文名：Science Magazine [1] 《科学》是发表最好的原始研究论文、以及综述和分析当前研究和科学政策的同行评议的期刊。 该杂志于1880年由爱迪生投资1万美元创办，于1894年成为美国最大的科学团体“美国科学促进会”——American Association for the Advancement of Science (AAAS)的官方刊物。全年共51期，为周刊，全球发行量超过150万份。 多数科技期刊都要向读者收取审稿、评论、发表的相关费用。但《科学》杂志发表来稿是免费的。其杂志的资金来源共有三部分:AAAS的会员费；印刷版和在线版的订阅费；广告费。 《科学》杂志属于综合性科学杂志，它的科学新闻报道、综述、分析、书评等部分，都是权威的科普资料，该杂志也适合一般读者阅读。“发展科学，服务社会”是AAAS也是《科学》杂志的宗旨。 在全球，《科学》杂志的主要对手为英国伦敦的《自然》杂志，该杂志创办于1869年，曾发表了大量的达尔文、赫胥黎等大师的文章。21世纪的 前4年中，二者为率先发表人类基因排列的图谱而激烈竞争。 《科学》杂志的主编唐纳德·科尼迪毕业于哈佛大学，博士学位,为斯坦福大学第八任校长，著名的环境科学教授。 《Nature》也属于周刊。杂志简介 英国著名杂志《Nature》周刊是世界上最早的国际性科技期刊，自从1869年创刊以来，始终如一地报道和评论全球科技领域里最重要的突破。其办刊宗旨是“将科学发现的重要结果介绍给公众，让公众尽早知道全世界自然知识的每一分支中 取得的所有进展”。《Nature》杂志每星期在全世界发行6万份，大约四分之一发行到图书馆和研究机构。 其中文网站：英国自然杂志《自然》杂志也为周刊。
期刊
指国际公认的三种享有最高学术声誉的期刊：美国《Cell》、英国《Nature》和美国《Science》
是的
自然杂志的介绍，这个杂志外行人不易读懂。 the journalWelcome to Nature, the weekly, international, interdisciplinary journal of Citations and Impact FactorIn 2005 Nature generated nearly 10,000 more citations than in 2004, and 26,000 more citations than its closest competitor, making it the world's most highly citated multidisciplinary science Nature's impact factor for 2005 was 273 (Source: Journal Citaton Reports, 2006, Thomson Scientific) The fall of nearly three points on 2004 was primarily due to the increased numbers of published Aims and scopeNature is a weekly international journal publishing the finest peer-reviewed research in all fields of science and technology on the basis of its originality, importance, interdisciplinary interest, timeliness, accessibility, elegance and surprising Nature also provides rapid, authoritative, insightful and arresting news and interpretation of topical and coming trends affecting science, scientists and the wider Nature's mission statementFirst, to serve scientists through prompt publication of significant advances in any branch of science, and to provide a forum for the reporting and discussion of news and issues concerning Second, to ensure that the results of science are rapidly disseminated to the public throughout the world, in a fashion that conveys their significance for knowledge, culture and daily Nature's original mission statement was published for the first time on 11 November Nature's first issueRead the full text of the first ever issue of Nature, published on 4 November Sample issueFree online access to the 3 March 2005 issue of NContact the journalProvides contact details for editorial, subscription, librarian and advertising About the editorsLike the other Nature titles, Nature has no external editorial Instead, all editorial decisions are made by a team of full-time professional Information about the scientific background of the editors may be found A full list of journal staff appears on the Nature family of journalsIn addition to Nature itself, there are three main families of Nature For advertisersInformation on display advertisements in Nature in print and online, or click here for information on classified For librariansInformation for institutions purchasing site licences, other online resources and print 科学杂志 in 1880 on $10,000 of seed money from the American inventor Thomas Edison, Science has grown to become the world's leading outlet for scientific news, commentary, and cutting-edge research, with the largest paid circulation of any peer-reviewed general-science Through its print and online incarnations, Science reaches an estimated worldwide readership of more than one In content, too, the journal is truly international in scope; some 35 to 40 percent of the corresponding authors on its papers are based outside the United S Its articles consistently rank among world's most cited Science's leading position stems from many factors: the journal's strong tradition of editorial independence; its high standards of peer review and editorial quality (of the more than 12,000 top-notch scientific manuscripts that the journal sees each year, less than 8% are accepted for publication); its Board of Reviewing Editors, consisting of more than 100 of the world's top scientists; its strong connections with the scientific community, which ensures a stream of lively, up-to-date, and authoritative news and commentary in its pages; the dedication of its professional staff in the US, the UK, and other countries, including 26 PD editors, a creative production and art group, and a team of science writers, reporters, and journalists second to none; the support of its publisher, AAAS, the world's largest general-science Today, a century and a quarter after its founding, Science continues to publish the very best in scientific research, news, and Whether you're concerned with AIDS, SARS, genomic medicine, Mars, or global warming, or just want to keep abreast of where the scientific world is and where it's going, you will find something worthwhile in S
是的
都是世界顶级学术期刊。《科学》是美国科学促进会主办和发行的。《自然》则是英国的。两者都是发表来自很多科学领域的研究论文。没有中文版，英文版可以网上看
collections（收藏版本)of the special issue of world’s top English magazines[注]special作名词使用也指“特刊”。
Special Treasuring Version of World Top English Magazine
To read
read english magazines请楼主斟酌