E. Uva

@uvachemistry

Stand on the shoulders of giants. But keep your balance.

In the arms of the Milky Way.
Vrijeme pridruživanja: siječanj 2019.

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  1. Prikvačeni tweet
    1. ruj 2019.

    Twitter is awash with mythology from . Here are 197 myths busted by science. Also see " are the cause. Solutions are within reach".

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  2. prije 14 sati

    "Britt Hall, a biology professor at the University of Regina, said she's "dismayed" the city picked Moore to speak at the conference. She said it's a decision that goes against the city's stated agenda that sustainability and climate change are important issues."

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  3. prije 23 sata

    "The male giraffe takes the female’s urine into its mouth. If LH is detected, the signal travels directly to the brain’s amygdala, one of the centers of emotional learning."

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  4. 2. velj

    And there's no fake information on Twitter? 🤣😂🤣

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  5. 2. velj

    "Created in part by financially conflicted think tanks and their academic compatriots, a new meme has emerged: scientists who speak out are no longer scientists; they are “activists.” "

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  6. 1. velj

    5*9 + 5+ 9 = 59 but since: ab + a + b = 10a + b ; ab = 9a ; b = 9. Thus "a" can be any value, regardless of how many digits it has. For example 15*9 + 15 + 9 = 159; 2020*9+2020+9=20209 etc. Simple reveals the mechanism behind

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  7. 1. velj

    Is this the surface of Mars? No. Just the light of the rising sun shining on a thin layer of overnight snow on our deck.

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  8. 31. sij

    A supernova is imminent: but that could mean any time between tonight and a few thousand years. But the event isn't necessarily closer due to the sudden dip in brightness. Other explanations for the variability are possible. See earlier tweet.

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  9. 31. sij

    The Heart&Soul , which include young stars born only 1 million years ago. The reddish color is from emissions of hydrogen gas, excited by radiation from nearby stars. Notice the 21P/Giacobini-Zinner, the source of the debris that creates the Draconid meteor shower.

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  10. 29. sij

    , a semiotician, understood the difference between science and technology, whereas many engaged in science communication do not.

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  11. 29. sij

    Got the answer from a former student on a different site. The base snatches a proton from the OH group and the O- then displaces the chloride ion to form the triangular ring.

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  12. 29. sij

    "The worst diagnosticians of every epoch are its contemporaries. My giants have taught me there are transitional spaces in which the coordinates are lacking & the future can't be seen clearly." -, On the Shoulders of Giants

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  13. 29. sij

    The 1st pair of mirror-image(chiral) molecules to be detected in space(2016) were those of propylene oxide. In the last step of its earth synthesis, a dechlorination, what is the mechanism? Is it a kind of intramolecular substitution reaction? I'd like to know.

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  14. 29. sij

    From the bus shelter this morning: scratches on the glass and/or impurities acted as condensation nuclei to form --pure poetry.

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  15. 28. sij

    “Risk assessment data can be like the captured spy: if you torture it long enough, it will tell you almost anything you want.”

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  16. 28. sij

    A plot of several tangents to a circle. The equation of the lines: y = (1/y1)*( +/- sqrt(4-y1^2)) + 4/y1 for various values of y1, where y1<2.

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  17. 27. sij

    The pear-shaped crater(actually two merged craters) on our is called Torricelli Crater. Evangelista was not only known for his butterfly moustache. He was taught by a student of , discovered and invented the barometer.

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  18. 26. sij

    Nice to see that now has a regular column in Scientific American magazine ( ). It is called "Observatory: Keeping an Eye on Science"

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  19. 23. sij

    "The US Environmental Protection Agency (EPA) backs the safety of glyphosate but has not required in-depth carcinogenicity testing of the full glyphosate-based formulated product, focusing research requirements on glyphosate alone."

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  20. 22. sij

    A true lack of vision: "On average, and gas companies invest about *one per cent* of their total capital spending in non-core areas — with the greatest amount in solar (PV) and wind."

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  21. 22. sij

    “It (CO₂) is just like narcotics,” says Müller. “Who's responsible, the drug baron or the junkies?" To make the analogy more complete, we can't forget the pushers in between & social factors and personal choices that help create the junkie.

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