Live data from Hacker News

Viewing profile — gpcr1949

gpcr1949

HN member
Joined
Fri, Sep 25, 2020, 8:14 PM UTC
HN karma
297
Public activity
73 items

About gpcr1949

my main interests are chemistry and audio.

Recent public activity

  1. story
  2. comment
    Comment #43995959

    I think it is an underestimation to say ~800 people died in the Gaza war. The Ukraine number also seems like a serious underestimation.

  3. story
  4. comment
    Comment #41765871

    Israel is committing what some experts are calling a genocide. In any case, they killed a lot of civilians. It can probably be debated whether this is noble or "striving to be bett…

  5. story
  6. comment
    Comment #38006315

    I am really surprised they fired him for a really relatively mild series of tweets. I know some of the Israeli scientists leading the campaign against him also pointed out he tweet…

  7. comment
    Comment #37536671

    Writing Basel as Bâle would be silly and non-standard too, yes. Maybe "wrong" is too strong of a classification. But for example, I wouldn't immediately recognize it as Basel in a …

  8. comment
    Comment #37535788

    Interesting history, but people in Leuven call this city Leuven and not Louvain. No need to use the french term in a flemish city where almost no one speaks french as their first l…

  9. comment
    Comment #37501574

    https://archive.vn/lByGj

  10. story
  11. comment
    Comment #35218550

    They use a random forest classifier, which is an ensemble model that gives a consensus result of several decision trees. One way to achieve this consensus is voting. Random forest …

  12. comment
    Comment #34852268

    High-throughput screening (HTS), i.e. testing a large amount of compounds in simple biochemical assays can't be compared with testing 10 compounds in monkeys. The point of HTS is f…

  13. comment
    Comment #34290517

    You can read about the development of this new route and its advantages here [0]. Ctrl+F for ibuprofen or go to p.54. https://sci-hub.se/10.1016/B978-0-12-804190-1.00004-5

  14. comment
    Comment #34290396

    Agreed the process is very simple. The innovation that makes the resolution worth it is (as Derek also mentioned in the blog post) an efficient way to re-racemize the L-meth to DL-…

  15. comment
    Comment #34129296

    This is really a scandalously misinformed stunt. The chemical they released is SO_2 - one of the gasses and car pollutants causing acid rain.

  16. comment
    Comment #33853207

    I was wondering the same thing. I found this in a guardian article > The military’s firefighters use aqueous film-forming foam, or AFFF, which contains extremely high levels of PFA…

  17. comment
    Comment #33617657

    Good to see the results respect Benford's law and are therefore not fabricated.

  18. comment
    Comment #33504728

    I may be misreading it, but doesn't the GoL as commonly understood also depend on diagonal neighbors (i.e. 8 direct neighbors)? In that case the rule space would explode beyond the…

  19. comment
    Comment #33345526

    BOL-148 is not like the others. All others are N1-acyl analogs of LSD, so unlike bol148 they rapidly metabolize to LSD proper. This also means until they make a prodrug or analog l…

  20. comment
    Comment #33344837

    They definitely will, this is after all the intended purpose of these firms, and some of the more professional among them are producing cGMP APIs at scale in a completely legitimat…

  21. comment
    Comment #33293340

    Fluorine on an aromatic ring is not labile: other examples of substances with fluorinated aromatic rings are fluoxetine(prozac), citalopram (celexa) and paroxetine (paxil), which a…

  22. comment
    Comment #33293308

    With all due respect for the forensic chemists and their good work on identifying an unknown substance, it is fairly common for forensic groups to once in a while detect new chemic…

  23. comment
    Comment #33293207

    Pretty unlikely. The F would be already in place at an early stage, the precursor is probably 2-F-benzonitrile, alternatively 2-f-phenylmagnesium bromide.

  24. story
  25. comment
    Comment #33056296

    (I have a background in organic chemistry as well) I somewhat disagree with this. Measuring chemical similarity is notoriously difficult, see these two interesting blog posts from …