Scientific articles are characterized by a formal, objective style. The research process should be described clearly enough that other researchers can follow how the researcher proceeded. This structure is commonly referred to as IMRoD, an acronym formed from the article's four main parts:
The target audience for scientific articles is primarily other researchers. Journals provide a way for researchers to disseminate their research and get an overview of research in their area. To reach as many people as possible, most researchers write in English.
Peer review is a process where scientific publications are read and evaluated by subject experts before they are accepted for publication. In summary, it is a form of quality assurance that ensures that the published research maintains a high standard.
There are different types of scientific articles, like whether the article is a primary or secondary source. A primary source consists of first-hand information that reports original data, while a secondary source builds on previously conducted studies.
Title, abstract and keywords give you information about the content of the article. The abstract is a short summary of the article. If you recognize concepts from your question in these details, you can make an initial assessment of whether the article is interesting to continue reading.
The introduction provides the background to the article and presents the aims and scope. After reading the introduction, you should have a clear idea of whether the scope of the article is going to answer your question.
The discussion is where the author presents the most important results and discusses them in relation to other research. If you think the article continues to be relevant, you can move on to read the two remaining parts, method and results. There you will get a detailed description of the research method and a factual account of the results.