ChemAlive SA

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ChemAlive SA

ChemAlive SA

@SAChemAlive

ChemAlive SA develops an online #compchem platform driven by #machinelearning and #bigdata for fast, accurate #compchem metrics. #Startup #Chemistry #Innovation

Lausanne, Switzerland Katılım Eylül 2016
607 Takip Edilen370 Takipçiler
Mario Barbatti
Mario Barbatti@MarioBarbatti·
Which scientific method does this cartoon illustrate?
Mario Barbatti tweet media
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Occupy Democrats
Occupy Democrats@OccupyDemocrats·
BREAKING: House Democrats STUN Republicans by unveiling a secret plan that they have been putting together since January to break through the GOP's debt ceiling obstructionism. Republicans have been threatening a government default that would crash the world economy unless President Biden brutally slashes funding and guts veterans healthcare benefits. Rather than cave to these draconian demands, Democrats' newly unveiled plan is designed to force a vote on the debt limit hike despite GOP objections through something called a "discharge petition," a special move that would force floor legislation backed by a majority of House members. The petition would require at least five Republicans signing on, a much lower threshold than the Democrats currently face to raise the ceiling in the GOP-controlled House. Democrats quietly introduced the legislative seed of this maneuver back in January inside an obscure bill called “The Breaking the Gridlock Act.” They have now introduced a "special rule" that enables the bill to be brought to the floor should the discharge petition succeed. While Republicans are playing chicken with the global economy, Democrats are going to bat for the American people once again. Retweet if you support the Democrats' bold plan!
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ChemAlive SA
ChemAlive SA@SAChemAlive·
See you on mastodon for a more serious interaction. Will keep up a while then deactivate! @chemalive/109377308716018706" target="_blank" rel="nofollow noopener">hachyderm.io/@chemalive/109…
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ChemAlive SA
ChemAlive SA@SAChemAlive·
@eduardmatito A set of statistical tricks will never displace fundamental physics. ML will always be one step behind the best QM methods able to be scaled to a statistically meaningful chemical space.
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ChemAlive SA
ChemAlive SA@SAChemAlive·
@ChemBark *resonance structures / forms that contribute to the pauling-wheland resonance hybrid structure
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ChemAlive SA
ChemAlive SA@SAChemAlive·
@ChemBark The problem is that we focus way too much on reactions in org chem before properly teaching electronic structure theory. Everyone is looking for a reaction, when these are two Pauling-Wheland Resonance Hybrids. (1)
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ChemBark
ChemBark@ChemBark·
Today’s Twitter talk reminds me of a personal favorite Orgo problem that gets all kinds of wrong answers. It’s always a winner for encouraging discussion among students!
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ChemAlive SA
ChemAlive SA@SAChemAlive·
@ChemBark ... because bonds are constructs - they do not exist. Both structures can be considered representations that contribute to the observable properties of the molecules, namely, its 3D structure and electron density. End rant.
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ChemAlive SA
ChemAlive SA@SAChemAlive·
@ChemBark The relative weighting of these structures should be assessed with valence-bond theory, which will provide numeric weights. For good reason a proper resonance arrow does not allow one to indicate which structure is 'favored' because neither structure exists (2)
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ChemAlive SA
ChemAlive SA@SAChemAlive·
Hotel de Ville is flying the #Ukraine flag under one of the #lausanne gargoyle-dragons. Slava Ukraine!
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ChemAlive SA
ChemAlive SA@SAChemAlive·
@ChemBark @AmerChemSociety I broke my last ACS periodic table mug years ago. Was the only reason I stayed a member but only got up to Lithium before realizing it wasn’t worth it!
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ChemBark
ChemBark@ChemBark·
I am no longer a member of the @AmerChemSociety because I now believe this organization does more harm than good to our field. Its iniquitous publishing model that drives librarians and faculty at smaller institutions mad, its absurdly unjustified executive compensation...
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ChemAlive SA
ChemAlive SA@SAChemAlive·
@andrewwhite01 The privilège to not only tweet during a meeting, but to complain about ssid meeting publicly without fear of losing your job… I think you have it pretty good man.
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Andrew White 🐦‍⬛
Andrew White 🐦‍⬛@andrewwhite01·
If I ever quit academia, it's because I have a primal dislike of useless meetings and meetings that drag on. Currently tweeting this from a meeting - give me your strength
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ChemAlive SA
ChemAlive SA@SAChemAlive·
@Chemjobber Those ‘stereo bonds’ aren’t wedged. What am I looking at here? Besides for the weird circled sp2 carbon, its just bad styling.
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