Many scientific articles include the following elements:
I. Abstract: The abstract should briefly summarize the contents of your article. Be sure to include a quick overview of the focus, results and conclusion of your study.
II. Introduction: The introduction should include any relevant background information and articulate the idea that is being investigated. Why is this study unique? If others have performed research on the topic, include a literature review.
III. Methods and Materials: The methods and materials section should provide information on how the study was conducted and what materials were included. Other researchers should be able to reproduce your study based on the information found in this section.
IV. Results: The results sections includes the data produced by your study. It should reflect an unbiased account of the study's findings.
V. Discussion and Conclusion: The discussion section provides information on what researches felt was significant and analyzes the data. You may also want to provide final thoughts and ideas for further research in the conclusion section.
For more information, see How to Read a Scientific Paper.