Scientific journal uses peer review
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Scientific journals
There are thousands of scientific journals in publication, with one estimate from 2012 indicating that there were 28,100 that were active, and many more have been published at various points in the past (see list of scientific journals). Most journals are highly specialized, although some of the oldest journals such as Science and Nature publish articles and scientific papers across a wide range of scientific fields. Scientific journals contain articles that have been peer reviewed, in an attempt to ensure that articles meet the journal's standards of quality and scientific validity.Although scientific journals are superficially similar to professional magazines (or trade journals), they are actually quite different.  Among others, scientific journals' papers' authors are experts who must cite everything (and have a bibliography).  They also deal with research, and are peer reviewed.  Meanwhile, trade journals are aimed at people in different fields, they focus on how people in them can do their jobs better, they cover information related to work, and they include tips and advice for improving performance.  Also, they are not scholarly.
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