high-quality original scientific posts
Not. Even. Close.
Instead, I would describe your posts as short, low effort, generic, almost plain definitions of topics that may actually be a copy/paste of some sort that average about 70 words in total, with payouts of $3 or more. Try to defend these posts as worth more than $0.04 per word, but if you do I would expect even more downvotes because that is absurd.
The Steemit FAQ offers this Steemit Etiquette Guide outlining the flaws in your approach and better ways to engage with the community.