Ethical standards for publication exist to ensure high-quality scientific publications, public trust in scientific findings, and that people receive credit for their ideas. It is important to avoid:
Data fabrication and falsification
Data fabrication means the researcher did not actually do the study, but made up data. Data falsification means the researcher did the experiment, but then changed some of the data. Both of these practices make people distrust scientists. If the public is mistrustful of science then it will be less willing to provide funding support.
Taking the ideas and work of others without giving them credit is unfair and dishonest. Copying even one sentence from someone else's manuscript, or even one of your own that has previously been published, without proper citation is considered plagiarism-use your own words instead.
Halabja University Journal used Turnitin software for plagiarism detection, manuscript with less than 20% plagiarism will be send to reviewers. Researchers who submit there work to HUJ should be devoid of any plagiarism and the material should not have been published earlier.
It is unethical to submit the same manuscript to more than one journal at the same time. Doing this wastes the time of editors and peer reviewers, and can damage the reputation of journals if published in more than one.
Redundant publications (or 'salami' publications)
This means publishing many very similar manuscripts based on the same experiment. It can make readers less likely to pay attention to your manuscripts.