Astrophysicien, énergie, développement durable, radioprotection, systèmes spatiaux, mode de scrutin. @YvanDutil@mstdn.science @yvandutil.bsk Threads @yvan_duti
Joined August 2012
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Et si un TGF donnait d’excellents résultats pour moins cher que le projet de TGV d’Alto? ledevoir.com/economie/102436…
Il y avait un Sr-90 dans le lait à l'époque. Il y a aussi une couche de Cs-137 qui sert à étudier l'érosion des sols.
Des traces d’essais nucléaires ont été détectés dans les érables québécois ledevoir.com/actualites/envi…
Yvan Dutil retweeted
🇮🇱 ☢️ How large is Israel's nuclear arsenal, and how is it deployed today?
In the latest Nuclear Notebook for @BulletinAtomic, Hans Kristensen and Mackenzie Knight-Boyle break down the open-source evidence behind Israel’s long-standing policy of nuclear ambiguity ("amimut"). 👇
ALT A rocket launches into the night sky, surrounded by a large cloud of exhaust smoke. (Credit: Israel Defense Ministry)
Yvan Dutil retweeted
The Zaporizhzhya Nuclear Power Plant (ZNPP) has once again lost all off-site power, forcing it to rely on emergency diesel generators for reactor cooling and other essential nuclear safety and security functions.
The plant’s connection to its sole remaining external power line, Ferosplavna-1, was lost early this morning. It is the 27th such event during the conflict, underlining the continued precarious nuclear safety situation, IAEA @rafaelmgrossi says.
The cause and location of the latest disconnection are not yet known.
The IAEA team at the ZNPP has been informed that the plant currently has sufficient fuel reserves to operate a limited number of emergency diesel generators for around two weeks.
DG Grossi stresses the importance of both restoring the ZNPP’s connection to the grid and increasing the amount of diesel fuel reserves available at the site.
Yvan Dutil retweeted
⚠️🇨🇳🚀 There is a lot of reports on a supposed Chinese ABM test yesterday.
It was most probably (99% sure) just the Ceres-2 space launch from Jiuquan that happened on Oct. 6th at 23:38 UTC / 07:38 local time.
The position of the Moon and Venus matches. You can look at @CNSpaceflight and other accounts for the video of the launch.
Yvan Dutil retweeted
What a stunning visualisation! This animation shows the Black Death spreading across Europe and parts of Asia between 1346 and 1353. The changing colours reveal how the plague advanced along trade routes, coastlines and rivers. Historical geography at its finest! Source: buff.ly/4fIM19D
Yvan Dutil retweeted
Wearable device makers are harvesting brain data to train AI—without telling users | Science | AAAS science.org/content/article/…
Yvan Dutil retweeted
نشرت روسيا عام 2020 مقاطع فيديو كانت سرية، لأضخم انفجار نووي شهدته الأرض، حين فجّر الاتحاد السوفيتي قنبلة "القيصر" في تجربة أجراها في أكتوبر 1961.
بلغت قوتها التفجيرية 50 مليون طن، على ارتفاع نحو أربعة آلاف متر فوق أرخبيل "نوفايا زيمليا"
قبل 66 عام ، فكيف اليوم !!!
Yvan Dutil retweeted
A huge meteorite dropping #superbolide observed today over northern #China. Watch this video until the end to notice the last frames even showing the end of ablation and potentially surviving #meteorites! 🤩
For the impressively loud sonic boom look here: teapawt.org/RT_Visual_on_X/status/…
Bon, je me suis ramolli en vieillissant.
Cette semaine, j'ai reçu des nouvelles d'un article scientifique que j'ai révisé. L'article a été rejeté. Je suis un peu surpris parce que j'avais recommandé une modification mineure.
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Je me réveille ce matin en j'entends des critiques sur les normes sismiques et le code du bâtiment.
La culture scientifique et technique est vraiment basse dans le milieu des décideurs.
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Yvan Dutil retweeted
Susan Travers became the only woman ever to serve officially in the French Foreign Legion, enlisting in August 1945.
For her extraordinary wartime service she received the Légion d’Honneur and became one of only two women awarded the Croix de Guerre in the Second World War.
Les conseils sont bons, mais je trouve que les Iraniens sont super stoïques.
This is how serious the situation is:
Iranian state media is broadcasting advice to its citizens on how to survive a US-Israeli NUCLEAR ATTACK
☢️ Do not look at the intense explosion light, take shelter behind a barrier, lie on the ground, and cover your head and face.
☢️ After the blast wave passes, enter the nearest building; do not stay to watch or take photos, do not take shelter inside a car.
☢️ Turn off ventilation, get yourself to a central part of the building where there are no windows and exterior walls.
☢️ Wash with lukewarm water and soap, and use regular shampoo without conditioner. If showering is not possible, clean your face, hands, and exposed skin with water or wet wipes.
☢️ Use bottled water and packaged food, and prepare to stay in the shelter for at least 24 hours; if fires break out in the building or there is a risk of its collapse, move to a safer shelter.
☢️Do not assume the environment is safe after the first 24 hours; follow official announcements and emergency broadcasts for the safe evacuation route.
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Yvan Dutil retweeted
In case you missed it: How nuclear security can help bring the US and China together on AI. ⬇️
buff.ly/GUOgq8N
Yvan Dutil retweeted
#DNA #Space #Asteroid
All 5 fundamental units of life’s genetic code were just discovered in an asteroid sample
theconversation.com/all-5-fu…
A new study reveals all five fundamental nucleobases – the molecular “letters” of life – have been detected in samples from the asteroid Ryugu.
Asteroid particles offer a glimpse into the chemical ingredients that may have helped kindle life on Earth. The Ryugu samples were returned from space in 2020 by Japan Aerospace Exploration Agency’s (JAXA) Hayabusa2 mission.
In 2023, an international team reported they had found one of the nucleobases in these samples – uracil. Now, in a study published in Nature Astronomy today, a team of Japanese scientists has confirmed all five nucleobases are present in this pristine asteroid material.
This means these ingredients for life may have been widespread throughout the Solar System in its early years.
[...]
Yvan Dutil retweeted
I updated my substack on NATO nuclear aircraft dispersal plans with some excellent quotes from a 1964 evaluation of the shortcomings of NATO's deterrence and defence plans:
walberque.substack.com/p/nat…