Moritz Negwer

@moritz_negwer@mstdn.science
988 Followers
2.6K Following
13.8K Posts

Neuroscientist by training, tinkerer by nature. Now scanning transparent mouse brains with light-sheet microscopes. Microscopy, clearing, data crunching, tinkering.

Working as postdoc at @radboudumc with Nael Nadif Kasri and Corette Wierenga, looking at neuron-distribution differences in mouse models of ASD.

Married, father of two. Toots in English, German, Dutch. Boosts a lot.

opted into tootfinder for full-text indexing. Check it out: https://www.tootfinder.ch/index.php?join=1

New body size database for marine animals is a “library of life”
Marine Organizational Body Size (MOBS) database fills a crucial gap in understanding ocean biodiversity.
https://arstechnica.com/science/2025/06/new-body-size-database-for-marine-animals-is-a-library-of-life/?utm_brand=arstechnica&utm_social-type=owned&utm_source=mastodon&utm_medium=social

grumpy effective sysadmin available immediately

having my position finally axed liquidated, i'm currently looking for a new position.

i am looking for a senior position, preferably remote work, full employment. i can be the literally senior person in your very own team!

availability date negotiatable starting from 1st of july 2025 – i'm currently located in poland, and for various reasons am not planning to relocate.

current cv available on request (private message will do, with all caveats regarding its privacy, or you can e-mail me on miroslaw AT makabra dot org)

i'm a generalist linux wrangler, with a long (20+ years) and wide (if a bit eclectic) experience –

  • system management, configuration management (ansible, chef & co.),

  • glue tooling and scripting (bash, python, rudimentary ruby),

  • design, setup and management of crucial infrastructure services (ldap, dns),

  • general db skills (not at the dba level), devops-y stuff etc.,

  • sysadmin-level networking stuff, and the ability to not stepping on toes of the netadmins too frequently,

  • very tired familiarity with version control systems (from using to setting up and managing, including ancient and current ones, open source and commercial),

  • also with long experience working in multi time-zone environment.

i know cloud stuff (mostly aws), spent some time recently working with the budget infra providers like hetzner or ovh, can do proxmox, have some docker and currently working on getting fluency in kubernetes – i'm already doing plenty of yaml programming.

in my recent job i've managed the most part of our ansible collection designed to set up base system image and then then getting specific services up and running, and have written tooling to help with bringing up and updating the systems using it, including a safe secret management on a small team scale.

i have fluent english and polish, passive german, some russian.

considering the current political and economical situation and that i'm looking for a long-term employment contract, i'd prefer not working for an united-states funded company, and preferably not having much to do with statistical slop generators of any kind (including, but not limited to LLMs).

it would be nice if the company had a minimally acceptable general business ethics profile.

#FediHire #GetFediHired #SystemAdministration #PayMeBecauseImGood

@helenczerski I remember Andries Meijerinck from Utrecht telling the story of how he had a visit from some people from the European Central bank who wanted to learn about luminescence. He spent a few hours talking to them and then didn't hear from them. When the euro banknotes appeared he recorded the spectra of the inks - sure enough they were a mix of Eu(III) and Eu(II)… 
And I think they're in other banknotes, including pounds, though I've never got round to recording the spectra. 1/2

#OpenSLS update: Generation of model #tissues with #dendritic #vascular networks via sacrificial #laser-sintered #carbohydrate templates: https://rdcu.be/b5tHy

Hardware designs: https://github.com/MillerLabFTW/OpenSLS
-R4: specialty powders for biomaterials research
-R3: nylon & wax #SLS

-#Python add-on for #Blender to generate bifurcating vascular structures
#DIYbio #OpenSource #lab #3Dprinting #bioprinter #laser #hydrogel #instruments

The Coffee Conundrum — 40% German

I can't imagine Germany without Kaffee und Kuchen, just as I can't imagine Britain without tea. Unlike the British though, Germans aren't judged on how they make their favourite hot beverage. Is this why coffee in Germany can be so hit & miss?

40% German
@spiralganglion @catsalad @fraggle Zwischenablagenverunsicherung (or Einfügeangst) might work
The 60-year-old man lying on the street, as far as anyone knew, was just a janitor hit by a drunk driver.
There was no mention of it on the local news, no obituary in the morning paper.
His name might have been Anonymous. But it wasn’t. 
His name was Peter Putnam.
He was a physicist who’d hung out with Albert Einstein, John Archibald Wheeler, and Niels Bohr,
and two blocks from the crash, in his run-down apartment, where his partner, Claude, was startled by a screech,
were thousands of typed pages containing a groundbreaking new theory of the mind.
“Only two or three times in my life have I met thinkers with insights so far reaching, a breadth of vision so great, and a mind so keen as Putnam’s,”
Wheeler said in 1991.
And Wheeler, who coined the terms “black hole” and “wormhole,” had worked alongside some of the greatest minds in science.
https://nautil.us/finding-peter-putnam-1218035/
Finding Peter Putnam

The forgotten janitor who discovered the logic of the mind

Nautilus

🎓 Today at @SURF, during the Digital Sovereignty course for board members, directors, and decision-makers in education and research, we had the pleasure of speaking with @Karlitschek and @fabricemous from @nextcloud!

We explored visions, asked deep questions, and learned from their experience. We’re moving into position to have the right conversations and be in control of IT 💚👌

💻 Digitalization is not the heart ❤️ of organizations, but the lifeblood

#DigitalSovereignty #Nextcloud #OpenSource

anyone need some maps or cad done remotely? i need to make some money lmao

If you drive in #France and suddenly see something milky on the roads, it's not a new farmers' protest. It's called "lait de chaux".
This #whitewash consisting of lime and water is a try to protect the bitumen in the roads from melting due to more and more heatwaves: https://www.franceinfo.fr/environnement/evenements-meteorologiques-extremes/vagues-de-chaleur-canicules/canicule-du-lait-de-chaux-repandu-sur-les-routes-pour-eviter-la-chaleur-du-bitume_7326369.html The streets are about 10 degrees cooler due to the white colour.
This week-end, we will have up to 37°C.

#climateDiary #ClimateAdaption #ClimateCrisis #white #colours #heatwave #road #roadSafety

Canicule : du lait de chaux répandu sur les routes pour éviter la chaleur du bitume

Dans l'Allier, un mélange d'eau et de chaux est répandu sur les routes pour faire baisser la température du bitume. Les opérations ont commencé avant la vague de chaleur du vendredi 20 juin.

Franceinfo
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Another article about #LightPollution also came out in Nature Cities today: https://www.nature.com/articles/s44284-025-00258-2

@travislongcore is a co-author, and the paper's title is "Artificial light at night outweighs temperature in lengthening urban growing seasons"

The authors looked at how temperature, artificial light, and how urban a city is (impervious surface fraction) affect the start and end of the growing season for plants.

They found that artificial light "increased exponentially toward urban centers, and exerted stronger influence than air temperature in lengthening the urban growing season, especially by delaying its end, although the effects varied across climate zones."

In case you are interested in light pollution and didn't see it yet, check out the thread above 👆

@skyglowberlin Ahhh I was literally just wondering on the bus this morning about whether increased lighting vs 'just' climate change might be behind some of the unseasonal flowers @joncounts and others have been noting....

@travislongcore

@skyglowberlin @travislongcore This reminds me of a winter about 20 years ago, when I saw a tulip blossoming in the middle of a winter next to some building with a strong light directed to it. It was something like January and lots of snow everywhere, but that one spot was kept warm by the light.
@skyglowberlin @travislongcore Dang, DIE ZEIT wrote about *that* paper in https://www.zeit.de/wissen/2025-06/jahreszeiten-kuenstliches-licht-stadt-studie-klimawandel but ignored ours ... for which Google finds zero mentions beyond copies of the RUB release so far. Perhaps it's a slow burner ...
Jahreszeiten: Wie künstliches Licht die Jahreszeiten verschiebt

Frühe Blüte, spätes Herbstlaub: Eine neue Studie zeigt, künstliches Licht verändert in Städten die Vegetationsperiode von Pflanzen – stärker als der Klimawandel.

ZEIT ONLINE

@cosmos4u yeah, at first I thought it was good that they came out together, but that may have sucked the air out of the room for ours...

It was reported in El Pais, Deutschlandfunk Nova, and (maybe?) BR.

Coming out a week before the summer solstice probably also doesn't fit well to the stories the editors want to tell - the "hot time of year" for interviews with me has nearly always been January and February, when the nights are long.

@skyglowberlin @travislongcore

This is cool.
I also noticed that certain wildflowers bloomed near the glass door of my house at least 2 weeks earlier in the Spring than it did in the surrounding yard.

There might have been some affect due to temperature leakage, but it really seemed to be due to the light, and this supports that.