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SellaTheChemist

@sellathechemist@mastodon.social
mastodon 4.8.0-nightly.2026-10-06
  • Open on mastodon.social

🇺🇦🇺🇦 Born at 318 ppm CO2, UCL Prof, chemistry, climate change, energy waste, chemical weapons, #ClassicKit, bicycles, Lab_14, #UCLChemAirPoll. Timeblind and tired. Ask about my heat pump. @SellaTheChemist.mastodon.social.ap.brid.gy.

0 Followers
0 Following
50 Posts
Joined October 29, 2022
“Real” name:
Andrea Sella
Official webpage:
https://profiles.ucl.ac.uk/4658-andrea-sella
LinkedIn:
https://www.linkedin.com/in/andrea-sella-26ba44b/
Current status:
Tired and stressed. But learning.
Open post
SellaTheChemist @sellathechemist@mastodon.social
· 3d ago
Boosted by @trending@homestead.social
Beware. If you are looking for Yuval Abraham and Rachel Szor's film "Naza" based on interviews with 24 Israeli soldiers, that is currently in film festivals and cinemas, you won't find it online. Instead you will find the IDF's "Naza - The True Story" that presents a very different picture of events in Gaza. Beware algorithms driving your feeds on other platforms. https://en.wikipedia.org/wiki/NAZA_(film)
en.wikipedia.org
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SellaTheChemist @sellathechemist@mastodon.social
· 2mo ago
Boosted by @trending@homestead.social
Message for the day – Commit a random act of maintenance! Listen to it, look at it, wipe it, clean it, lube it, brush it, tighten it, grease it, turn it, check it, test it, sweep it, mop it, paint it, tape it, sand it, tweak it, tune it, adjust it, wash it, oil it, dust it, align it, scrub it, wind it, fill it, seal it…
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SellaTheChemist @sellathechemist@mastodon.social
· 2mo ago
RE: https://cyberplace.social/@GossiTheDog/116986533493228804 Remember that this man is STILL a Fellow of the Royal Society!
Open quoted post
Quoting
Kevin Beaumont
@GossiTheDog@cyberplace.social
Elon Musk, an immigrant, was interviewed recently by the editor of the Economist. He said a bunch of dumb shit - for example that money wouldn’t exist in 2036, and that everybody wouldn’t have to work any more as AI would do their job for them. Anyway, he’s now essentially calling for the assassination of the journalist over her questions about immigration.
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cyberplace.social
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SellaTheChemist @sellathechemist@mastodon.social
· 5mo ago

Every so often there is a hilarious detail amid the never ending car-crash that is the Trump “administration”.

“I was at an industry meeting this week, and I can tell you one of the biggest concerns was that we might see diesel prices [in the US] go to $10, and the equipment, you know, the pumps and the dispensers and so forth can’t handle a number that high. That’s incredible,” he said.

From the FT.

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SellaTheChemist @sellathechemist@mastodon.social
· 3mo ago
This could be Count Binface's big chance. C'mon Clacton. Given the shocking waste of money of having to run a by-election the least you can do is to elect someone sensible. #Garbage
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SellaTheChemist @sellathechemist@mastodon.social
· 2mo ago
Replying to
@Npars01@mstdn.social My experience is that everyone cuts maintenance unless compelled to. On the face of it, it’s a victimless crime. But what I’ve learned from embedding myself into UCL Estates for three years is that the consequences of that neglect are enormous. And then consultants are called in who often say “not fit for purpose” -they are not challenged, leading to wildly expensive replacements instead of thoughtful repairs that can extend life by decades. Enraging because it’s someone else’s money.
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SellaTheChemist @sellathechemist@mastodon.social
· 1mo ago
Replying to
@strangetown@toot.wales @eliothiggins.bsky.social Mr Mate has been wrong about a lot of stuff over the years.
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SellaTheChemist @sellathechemist@mastodon.social
· 4mo ago

RE: @MissConstrue@mefi.social

I’ve been reading it too. It is quite the document. Forget that he’s Pope. A mind for our times. A light in the gloom.

mefi.social
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SellaTheChemist @sellathechemist@mastodon.social
· 4mo ago

The due diligence required to moderate and check our electronic final exam experiment is going to drive me to drink. We now have three versions of every question on the paper (about 80 some shared between 3 papers) and the fiddliness of making sure that each of these versions is the same is going to drive me mad.
And I've discovered that one of my beloved colleagues does not know that when you are generating SMILES strings there's a difference between benzene and cyclohexatriene #teaching

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SellaTheChemist @sellathechemist@mastodon.social
· 2mo ago
Replying to
@jimfl@hachyderm.ioWell, yes, but at least you didn't tell me that I might be decreasing the entropy of the system but not that of the universe as a whole… as some damn woke pedant academic would.
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SellaTheChemist @sellathechemist@mastodon.social
· 4mo ago

RE: @wchr@mastodon.social

If Chrome is a threat to the security of US military personnel then it's clearly a threat to everyone else.

Odd that they didn't learn from the Strava incident that @eliothiggins.bsky.social and @Bellingcat@mstdn.social uncovered a few years back. Memories are short.

mastodon.social
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SellaTheChemist @sellathechemist@mastodon.social
· 5mo ago
Replying to
To my astonishment it is available on YouTube. Watch it for inspiration as authoritarians come out of the shadows, a reminder of how many around you will compromise with the regime. Watch it because Mussolini's jaw came before Trump. Watch it for the beautiful shots of Módena (stress on the o, please) with its glorious arcades and unforgettable cathedral. Watch it for he savage twists at the end. #resistance #partisans #fascism #women #democracy #cinema /end https://www.youtube.com/watch?v=ctZIy2PNUiI

"Libera, Amore Mio..." (1975) Claudia Cardinale & Bekim Fehmiu

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SellaTheChemist @sellathechemist@mastodon.social
· 4mo ago

Lovely exhibition inspired by The Second Law by the Japanese artist Reijiro Wada. The man does things to titanium that will make you marvel. At the Anglo Japanese Davies Foundation in Regent’s Park. #free #microstates #entropy #Boltzmann #titanium

mastodon.social

Mastodon

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SellaTheChemist @sellathechemist@mastodon.social
· 3mo ago
Replying to
@mxchara@seattle.pink A very smart man who thought that because they all dissolved in acid to give 3+ ions of almost identical size that there was no more to discuss in a textbook. The year was 1975-ish…. The lanthanides continue to surprise us with weird oxidation states and ever more bizarre bonding and magnetism.
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SellaTheChemist @sellathechemist@mastodon.social
· 5mo ago
Replying to
@CiaraNi Alas, with the recently announced savage cuts to BBC news they might not be around next time there is good news like that to report.
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SellaTheChemist @sellathechemist@mastodon.social
· 2mo ago
Replying to
@geonz@mathstodon.xyz Snap!
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SellaTheChemist @sellathechemist@mastodon.social
· 5mo ago

Catching up with a pile of old newspapers, I find @MarcAbrahams@mstdn.science staring out of the 23 April edition of Le Temps. It’s a great paper with smart journalists and little clickbait. IgNobels excepted, of course. 😜
A very good interview with trenchant comment on the threat to US science. And even a passing reference to two banana-clad “badauds” (gawkers/flâneurs).

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SellaTheChemist @sellathechemist@mastodon.social
· 4mo ago

RE: @SusiArnott@mastodon.green

A Pope for our Time!

mastodon.green
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SellaTheChemist @sellathechemist@mastodon.social
· 4mo ago
Replying to
@tpfto@mathstodon.xyz @johncarlosbaez@mathstodon.xyz You beat me to it! Legendary!
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SellaTheChemist @sellathechemist@mastodon.social
· 5mo ago
Replying to
@petros “It is easier to con a man than to convince him that he’s been conned” Mark Twain had humani nature figured out.
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SellaTheChemist @sellathechemist@mastodon.social
· 2mo ago
Replying to
@mxchara@seattle.pink There is a huge amount of activity in organic synthesis using different lanthanides salts - especially, but also complexes wrapped with chiral ligands - acting as Lewis acids to catalyze all manner of transformations. Sc(OTf)3 is particularly prized. Not cheap, mind. So it's got to be pretty good if people are going to use it. 😉 And then there's all the low-valent stuff with samarium to drive either radical reactions or Barbier-type processes with added reduction SmI2 is the bomb!
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SellaTheChemist @sellathechemist@mastodon.social
· 2mo ago
Replying to
@mxchara@seattle.pink There was indeed. And the improved separation of the lanthanides during the Manhattan project was a big driver for the development of ion exchange resins and of solvent extraction, with accompanying developments in ligand chemistry. But Pimentel was really making a comparison with the d-block where you have lots of variable oxidation states, redox chemistry, complex covalency and so on. The lanthanides seemed a bit tame by comparison.
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SellaTheChemist @sellathechemist@mastodon.social
· 3mo ago
It may not be immediately obvious, but it seems pretty shallow to write off a very serious bit of science. Niche, sure. But it sounds a bit like George Pimentel’s legendary dismissal of lanthanide chemistry. There’s plenty of arcane and seemingly dull things (binary and ternary phase diagrams??? Stability constants? LFER?? endless crystal structures??) and then things move on, new tools appear and suddenly they’re the bedrock of a new mash-up. Beware what you dismiss.
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SellaTheChemist @sellathechemist@mastodon.social
· 4mo ago
Replying to
@vnikolov@ieji.de @tpfto@mathstodon.xyz @johncarlosbaez@mathstodon.xyz yes. Wolfgang was real. Pauli was imaginary.
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SellaTheChemist @sellathechemist@mastodon.social
· 5mo ago
Replying to
@batkaren You win the internet!
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SellaTheChemist @sellathechemist@mastodon.social
· 5mo ago
Replying to
@oldclumsy_nowmad @wesdym worth remembering that most parasites need to keep their host alive. If they kill it they have a problem.
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SellaTheChemist @sellathechemist@mastodon.social
· 5mo ago
Replying to
@H4Heights Yup. But for the US this is dynamite. And it risks upending things, including the auto industry.
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SellaTheChemist @sellathechemist@mastodon.social
· 5mo ago
Replying to
But the book makes reference to the first film that tried to depict a woman of the resistance, "Libera, Amore mio" (Libera, my love). The heroine is called Libera (“She is free”, played by Claudia Cardinale) a woman who breaks every rules and speaks her mind at every opportunity. Occasionally a bit melodramatic it is a fabulous, almost forgotten film made by Mauro Bolognini in 1975 a date that speaks volumes about how long it for Italian attitudes about women to shift. 2/n
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SellaTheChemist @sellathechemist@mastodon.social
· 5mo ago
Replying to
@PlukkiePanda @Tubemeister@mstdn.social The article points out that price remains lower than what is paid in Europe. As to conversion factors beware US vs Imperial gallons. Step outside the SI system and you’re into a bit of a minefield.
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SellaTheChemist @sellathechemist@mastodon.social
· 5mo ago
Replying to
@DrFerrous Yes. The reactions and the species present. One thing I've learned is that asking students to plot titration curves from concentriations and pKa values is quite probing (pace @fclc ). But I also think it's a very valuable learning tool for life scientists to get their heads round.
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SellaTheChemist @sellathechemist@mastodon.social
· 4mo ago

The unmistakeable and BRILLIANT voice of Rhiannon Giddens is on BBC Radio 3 from Wigmore Hall. I'm gutted that I'd not spotted her gig in advance as I've only ever heard on "wireless". https://www.bbc.co.uk/sounds/play/live/bbc_radio_three
If you've forgotten the marvels that is America, she embodies so much of the best in America represents.

bbc.co.uk
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SellaTheChemist @sellathechemist@mastodon.social
· 5mo ago
Replying to
RE: https://mastodon.social/@MAKS23/116511761531229704 @MAKS23 For UCL people, this reservoir is smaller than the volume of water that my Department used each year until I started reading the meter, and asking a few pointed questions. My salary has been covered by the savings every since. And although the burning of the oil and the environmental disaster that will cause appals me, I can't say I'm at all sorry to see this Russian facility destroyed. #SlavaUkraini
mastodon.social
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SellaTheChemist @sellathechemist@mastodon.social
· 5mo ago
Replying to
@oldclumsy_nowmad @wesdym Don't be sorry. It was hilariously opaque until I'd read it three times, including mental pictures of p and hybrid orbitals clouding the picture. And yes, I agree! 😂
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SellaTheChemist @sellathechemist@mastodon.social
· 5mo ago
Replying to
And it looks to me like Hennig Brandt has an heir in the 21st century, though poor Hennig may be spinning in his grave. https://x.com/CantEverDie/status/2050636011609199016?ref_src=twsrc%5Etfw
x.com
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SellaTheChemist @sellathechemist@mastodon.social
· 5mo ago
Replying to
@devolute@mastodon.social You are SO right. I apologize. I was trying to shove a round rice cake into a square proscenium.
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SellaTheChemist @sellathechemist@mastodon.social
· 5mo ago
Replying to
@supersciencegrl.co.uk My astonishment with it was - and sorry to be dark here - to the fact that, at Auschwitz, prisoners would be injected with phenol directly into the heart. So the effect of the two isopropyl groups when you inject the stuff knocked me over (groan). And then to my amusement, I discovered that a neighbour of mine did the chemical biology required to identify the binding site on the GABAA receptor. It is an amazing molecule. https://www.nature.com/articles/nchembio.1340
nature.com
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SellaTheChemist @sellathechemist@mastodon.social
· 5mo ago
Replying to
@Methylzero Where can I get some? I want to put them onto our gas cylinders.
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SellaTheChemist @sellathechemist@mastodon.social
· 5mo ago
Replying to
@AvonVilla I totally endorse your view which is why in my energy work my focus is almost entirely on controls, using kWh rather than any other indicator. People keep saying that we should build a new building to reduce our emissions. they go quiet when I point out that just the steel and concrete of the frame of something to replace our building would contribute 30,000 tonnes in emissions before you even put in the windows and the interiors. I find myself in the minority.
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SellaTheChemist @sellathechemist@mastodon.social
· 4mo ago
Replying to
@tpfto@mathstodon.xyz @vnikolov@ieji.de @johncarlosbaez@mathstodon.xyz Ok. You win!!
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SellaTheChemist @sellathechemist@mastodon.social
· 5mo ago
Replying to
@supersciencegrl.co.uk Isn't it just?
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SellaTheChemist @sellathechemist@mastodon.social
· 5mo ago
Replying to
@devolute@mastodon.social What the plebs haven’t figured out is that with the highbrow, when the going gets tough, the baloney gets going. 😜
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SellaTheChemist @sellathechemist@mastodon.social
· 5mo ago
Replying to
@cockneylaurie @Doomstrike But then again, as Robert Armstrong would say, there's an odds on chance we can reply on TACO.
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SellaTheChemist @sellathechemist@mastodon.social
· 5mo ago
Replying to
@SusiArnott@mastodon.green Isn't it just? I wonder why I'd never heard of it. It is also one of the great cycling movies. 😉
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SellaTheChemist @sellathechemist@mastodon.social
· 5mo ago
Replying to
@devolute@mastodon.social Is it an opera?
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SellaTheChemist @sellathechemist@mastodon.social
· 2mo ago
Replying to
@heidilifeldman@mastodon.social i got 2/3 of the way through when it came out and was so horrified that I stopped. Thanks for the reminder. An awful awful pair of monsters.
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SellaTheChemist @sellathechemist@mastodon.social
· 5mo ago
Replying to
@oldclumsy_nowmad @wesdym You're not doing that p-hacking thing that some are so up in arms about are you? 😂
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SellaTheChemist @sellathechemist@mastodon.social
· 5mo ago
Replying to
@Methylzero Uh oh… ! 😍
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