天天舔天天爽_视频日韩_成人网线_天天草草草_免费一级在线观看_色综合色综合色综合色综合

愛思唯爾 Elsevier  
愛思唯爾（Elsevier）是世界上最大的醫(yī)學(xué)與其他科學(xué)文獻(xiàn)出版社之一，屬于里德·愛思唯爾集團(tuán)旗下，總部位于阿姆斯特丹。其前身可追溯自16世紀(jì)，而現(xiàn)代公司則起于1880年，出版品包括學(xué)術(shù)期刊《柳葉刀》、《四面體》、《細(xì)胞》，以及教科書《格雷氏解剖學(xué)》等。每年共有250,000篇論文發(fā)表在愛思唯爾公司出版的期刊中

愛思唯爾致力于為全球三千多萬科學(xué)家、研究人員、學(xué)生、醫(yī)學(xué)以及信息處理的專業(yè)人士提供一流的信息產(chǎn)品和革新性的工具。 我們很榮幸能在全球科技和醫(yī)學(xué)學(xué)術(shù)團(tuán)體中扮演一個(gè)不可或缺的角色并為這些領(lǐng)域的發(fā)展盡綿薄之力，幫助科研人員和專業(yè)人士提高生產(chǎn)力和效率，同時(shí)不斷投入并努力創(chuàng)新來更好地滿足全球?qū)W術(shù)社區(qū)的需要。 

Elsevier B.V.  is a publishing company which publishes medical and scientific literature. It is a part of the Reed Elsevier group. Based in Amsterdam, the company has operations in the United Kingdom, USA, and elsewhere.
Elsevier took its name from the Dutch publishing house Elzevir, which, however, had no connection with the present company. The Elzevir family operated as booksellers and publishers in the Netherlands. Its founder, Lodewijk Elzevir (1542–1617), lived in Leiden and established the business in 1580. The modern company was founded in 1880. Leading products include journals such as The Lancet and Cell, books such as Gray's Anatomy, the ScienceDirect collection of electronic journals, the Trends and Current Opinion series of journals, and the online citation database Scopus. Its free researcher collaboration tool, 2collab, launched in 2007, was discontinued in 2011.
Elsevier publishes 250,000 articles a year in 2,000 journals.[1] Its archives contain seven million publications. Total yearly downloads amount to 240 million.[2] The company is currently being boycotted by academics who object to its business model, which includes "paywalls" and (in their opinion) excessively high subscription charges.
In 2010, Elsevier reported a profit margin of 36% on revenues of $3.2 billion.[3] Elsevier accounts for 28% of the revenues of the Reed Elsevier group (?1.5b of 5.4 billions in 2006). In operating profits, it represents a bigger fraction of 44% (?395 of 880 millions).[4] Adjusted operating profits rose by 10% from 2005 to 2006.