Yes. You can freely upload Abstracts of your research articles anywhere. These Abstracts are considered as being adverts for your articles.

Dear Prof. Ian Kennedy,

Where are you? We are all missed you so much, hope you fine.

I agree with Dr. Ian Kennedy, It is allowed to upload your abstract (only) not in RG platform only but everywhere you want without any copyright problems,beside that many trusted sites like Science Direct are always publishing abstracts only for free and in case of downloading full text paper, you have to pay. Thank you sir for your important question.

Regards,

Emad

@Emad. Here and everywhere else! Fine, thanks. 

@Srikanth: The abstracts often contain keyphrases that are not in your title, and thereby attract people to your journal article. 

Dear, the abstract of your study  is already with you, so if you lose it, it is legal to download it again from any site you have published it, 

The abstract of a research paper is the teaser and the bait that draws people to read the full text of the paper. Its dessimination should be very wide so as to gain the interests of target readership audience globally. Avenues to index and popularize abstracts must be seized and utilized fully by researchers to espouse their great contributions to the global academic community. No need for permissions from journals since they all want to draw great poll of readers to traffic their websites either to freely download or subscribe full texts of those published papers.

Thanks

Dickson Adom

Yes to your own abstracts. No to abstracts of others.

 thanks one and all for your prompt reply. 

Yes you can.