User talk:Reza1374
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Hello, I'm Materialscientist. I noticed that you recently removed some content without explaining why. In the future, it would be helpful to others if you described your changes to Wikipedia with an edit summary. The removed content has been restored. If you think I made a mistake, or if you have any questions, you can leave me a message on my talk page. Thanks, Materialscientist (talk) 12:33, 18 August 2012 (UTC)
Welcome to Wikipedia. We welcome and appreciate your contributions, but we cannot accept original research. Original research also encompasses combining published sources in a way to imply something that none of them explicitly say. Please be prepared to cite a reliable source for all of your contributions. Thank you. Materialscientist (talk) 12:33, 18 August 2012 (UTC)