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Research articles generally consist of the following components: a title and abstract, an introduction, a methodology, results, discussion, and references. Before they are published, the editor of the journal to which the manuscript was submitted sends it to experts in the same field for review. These scholars will review the article for, among other things, the appropriateness of its methodology and its relevance to the field. They may suggest revisions. The peer review process is lengthy. It may be a year or longer between the time an article is submitted and its publication.

The title and abstract are key factors in determining whether the entire article will be read. A title should be descriptive, giving the reader an idea of the focus of the study. Because the Internet has made it possible to access so many research articles online, a title should contain enough keywords for an interested reader to find the article. The abstract, meanwhile, serves as a mini-summary of the study. Many readers will review the abstract and, based on the findings, will decide whether to read the entire article.

Title, Author, Work/School
Abstract: A short summary of the article.

Introduction : Current theories about the topic. What are the hypothesis for the paper?
Methods: What method used.

Results : What were the results obtained?
Discussion and Conclusion: What are our thought about the results compared to other relevant theories.

References: Through the text there are references, sources of knowledge, which you’ve used. Citing those will give you more credibility because good research is thought to be based on other knowledge and empirical (observed) evidence.

A review article is an article that summarizes the current state of understanding on a topic. A review article surveys and summarizes previously published studies, rather than reporting new facts or analysis. Review articles are sometimes also called survey articles or, in news publishing, overview articles. Academic publications that specialize in review articles are known as review journals.

Review articles teach about:
the main people working in a field
recent major advances and discoveries
significant gaps in the research
current debates
ideas of where research might go next
Review articles in academic journals analyze or discuss research previously published by others, rather than reporting new experimental results. An expert’s opinion is valuable, but an expert’s assessment of the literature can be more valuable. When reading individual articles, readers could miss features that are apparent to an expert clinician-researcher. Readers benefit from the expert’s explanation and assessment of the validity and applicability of individual studies.
Review articles come in the form of literature reviews and, more specifically, systematic reviews; both are a form of secondary literature. Literature reviews provide a summary of what the authors believe are the best and most relevant prior publications. Systematic reviews determine an objective list of criteria, and find all previously published original experimental papers that meet the criteria; they then compare the results presented in these papers.

In the medical sciences, the importance of review articles is rising. When clinicians want to update their knowledge and generate guidelines about a topic, they frequently use reviews as a starting point.

The importance of review articles in health sciences is increasing day by day. Clinicians frequently benefit from review articles to update their knowledge in their field of specialization, and use these articles as a starting point for formulating guidelines
A scientific journal is a periodical publication intended to further the progress of science, usually by reporting new research. Articles in scientific journals are mostly written by active scientists such as students, researchers and professors instead of professional journalists. There are thousands of scientific journals in publication, and many more have been published at various points in the past. Most journals are highly specialized, although some of the oldest journals such as 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, they are actually quite different. Issues of a scientific journal are rarely read casually, as one would read a magazine. The publication of the results of research is an essential part of the scientific method.

There are several types of journal articles; the exact terminology and definitions vary by field and specific journal, but often include:
Letters (also called communications, and not to be confused with letters to the editor) are short descriptions of important current research findings that are usually fast-tracked for immediate publication because they are considered urgent.

Research notes are short descriptions of current research findings that are considered less urgent or important than Letters.

Articles are usually between five and twenty pages and are complete descriptions of current original research findings, but there are considerable variations between scientific fields and journals—80-page articles are not rare in mathematics or theoretical computer science.

Supplemental articles contain a large volume of tabular data that is the result of current research and may be dozens or hundreds of pages with mostly numerical data. Some journals now only publish this data electronically on the Internet. Supplemental information also contains other voluminous material not appropriate for the main body of the article, like descriptions of routine procedures, derivations of equations, source code, non-essential data, spectra or other such miscellaneous information.

Review articles do not cover original research but rather accumulate the results of many different articles on a particular topic into a coherent narrative about the state of the art in that field. Review articles provide information about the topic and also provide journal references to the original research. Reviews may be entirely narrative, or may provide quantitative summary estimates resulting from the application of meta-analytical methods.

Data papers are articles dedicated to describe datasets. This type of article is becoming popular and journals exclusively dedicated to them have been established, e.g. Scientific Data and Earth System Science Data.

Video papers are a recent addition to practice of scientific publications. They most often combine an online video demonstration of a new technique or protocol combined with a rigorous textual description.