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Retinal blood vessels that are similar to cerebral blood vessels maintain the inner blood-ocular barrier. This physiological barrier comprises a single layer of non-fenestrated endothelial cells, which have tight junctions. These junctions are impervious to tracer, so many substances can affect the metabolism of the eyeball.
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Open textbooks and other open educational resources may be found on several platforms, typically organized by universities and non-profit organizations, such as MERLOT. [35] The University of Minnesota Open Textbook library is coordinated through the Center for Open Education and is a repository of downloadable open textbooks.
Z-Library (abbreviated as z-lib, formerly BookFinder) is a shadow library project for file-sharing access to scholarly journal articles, academic texts and general-interest books. It began as a mirror of Library Genesis , but has expanded dramatically.
The Library of Congress in Washington D.C. [8] over 34,000,000 volumes as of 2010. [9] Research collections of The New York Public Library in New York City [10] National Library of Australia in Canberra, Australia. 10 million volumes [11] National Library of Finland in Helsinki, Finland [12] Radcliffe Science Library at the University of Oxford ...
Librarians and library associations also lead education and outreach initiatives to faculty, administrators, the library community, and the public about the benefits of open access. Many library associations have either signed major open access declarations or created their own. For example, IFLA have produced a Statement on Open Access. [142]
A research library is a library that contains an in-depth collection of material on one or several subjects. [1] A research library will generally include an in-depth selection of materials on a particular topic or set of topics and contain primary sources as well as secondary sources. Research libraries are established to meet research needs ...
A bookless library typically uses the space that would have once been used for books to offer public computers, e-readers and other technology used to consume and produce digital media. Over the last decade, driven by changes in scholarly communication , several major research libraries have successfully become bookless.