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An article processing charge (APC), also known as a publication fee, is a fee which is sometimes charged to authors. Most commonly, it is involved in making an academic work available as open access (OA), in either a full OA journal or in a hybrid journal .
This is a list of open-access journals by field. The list contains notable journals which have a policy of full open access. It does not include delayed open access journals, hybrid open access journals, or related collections or indexing services.
More than half of the OA publications (27.5% of all indexed works in 2023) were in fully Gold Open Access sources, 16.7% of all were in Green OA sources (i.e. which allow for self-archiving by authors), 9.2 % in Hybrid Gold OA sources (such as journals, which have open access and behind-paywall articles in the same issue), and 10.6 % were in ...
Fee-based open access publishing has been criticized on quality grounds, as the desire to maximize publishing fees could cause some journals to relax the standard of peer review. Although, similar desire is also present in the subscription model, where publishers increase numbers or published articles in order to justify raising their fees.
A work that has not undergone publication, and thus is not generally available to the public, or for citation in scholarly or legal contexts, is called an unpublished work. In some cases unpublished works are widely cited, or circulated via informal means. [14] An author who has not yet published a work may also be referred to as being unpublished.
The 2014 AP Chemistry exam was the first administration of a redesigned test as a result of a redesigning of the AP Chemistry course. The exam format is now different from the previous years, with 60 multiple choice questions (now with only four answer choices per question), 3 long free response questions, and 4 short free response questions.
The Berne Convention leaves it to any signatory country to make its own rules regarding unpublished anonymous works (see §15(4)). Unpublished works by a known author, however, are subject to the same minimum protection (50 years p.m.a) as published works. But this is only a minimum protection. Individual countries can and do make their own ...
Also acid ionization constant or acidity constant. A quantitative measure of the strength of an acid in solution expressed as an equilibrium constant for a chemical dissociation reaction in the context of acid-base reactions. It is often given as its base-10 cologarithm, p K a. acid–base extraction A chemical reaction in which chemical species are separated from other acids and bases. acid ...