The accepted manuscripts are categorized into:
Article is the first publication of original research. It must be presented so that the research can be repeated giving results with equal precision within the limits of the trial error, which means that the correctness of analyses and conclusions can be checked.
Review is a complete review of a issue or a field of research based on already published work but contains original analyses synthesis or suggestions for further research. It has a more comprehensive introduction than the original scientific paper.
Preliminary communication includes new scientific results demanding urgent publication while the research is underway. This kind of article does not have to ensure the repetition and checking the presented results. It is published only with the author’s obligation to publish the original scientific paper when the research is completed.