Denis Vivares
@denisvivares.bsky.social
Professeur de physique-chimie à Toulouse. Curieux de tout, surtout de science.
"Le cerveau humain nous montre ainsi que les possibilités de progrès sont énormes car il parvient à accomplir toutes ses tâches avec seulement une dizaine de watts, soit moins que l’énergie nécessaire à une lampe de chevet"
lejournal.cnrs.fr/articles/les...
lejournal.cnrs.fr/articles/les...
Les défis d’une IA frugale
Alors que le développement de l’intelligence artificielle (IA) va réclamer toujours plus d’énergie, comment limiter son impact sur le changement climatique ?
lejournal.cnrs.fr
January 2, 2026 at 6:38 PM
"Le cerveau humain nous montre ainsi que les possibilités de progrès sont énormes car il parvient à accomplir toutes ses tâches avec seulement une dizaine de watts, soit moins que l’énergie nécessaire à une lampe de chevet"
lejournal.cnrs.fr/articles/les...
lejournal.cnrs.fr/articles/les...
Reposted by Denis Vivares
Chloride salts are used to make roadways safe in the wintertime, despite being very environmentally unfriendly and corrosive. Research is ongoing to find new ways to limit the corrosive properties of salts and minimize the amount needed to break the ice. cen.acs.org/environment/... #chemsky 🧪
What is road salt and how does it impact the environment?
The ice-melting substance is ubiquitous in many snowy areas. Smart salting is key to minimize its environmental impact
cen.acs.org
December 31, 2025 at 10:01 AM
Chloride salts are used to make roadways safe in the wintertime, despite being very environmentally unfriendly and corrosive. Research is ongoing to find new ways to limit the corrosive properties of salts and minimize the amount needed to break the ice. cen.acs.org/environment/... #chemsky 🧪
Reposted by Denis Vivares
Washing machines are known to release microfibers into wastewater, but new research shows that clothes dryers, like those in a commercial laundry, also release large numbers of microfibers into the environment. cen.acs.org/environment/... #chemsky 🧪
Commercial dryers release microfibers into the air
New study finds that laundromats send large amounts of synthetic and natural fibers into the environment
cen.acs.org
December 31, 2025 at 10:40 AM
Washing machines are known to release microfibers into wastewater, but new research shows that clothes dryers, like those in a commercial laundry, also release large numbers of microfibers into the environment. cen.acs.org/environment/... #chemsky 🧪
Reposted by Denis Vivares
Plastics have infiltrated every recess of the planet, including your lungs, kidneys and other sensitive organs
go.nature.com/4j1dLeY
go.nature.com/4j1dLeY
Your brain is full of microplastics: are they harming you?
Plastics have infiltrated every recess of the planet, including your lungs, kidneys and other sensitive organs. Scientists are scrambling to understand their effects on health.
go.nature.com
December 31, 2025 at 10:48 AM
Plastics have infiltrated every recess of the planet, including your lungs, kidneys and other sensitive organs
go.nature.com/4j1dLeY
go.nature.com/4j1dLeY
Reposted by Denis Vivares
Electric vehicle driving range drops by 25–40% at temperatures below 5 °C as chemical reactions in the battery become sluggish. Researchers are trying various methods to improve battery performance at extreme temperatures: cen.acs.org/energy/energ... #chemsky 🧪
EV driving range drops in the winter. Can new materials and methods help?
From reworking electrolytes to adding heating elements, researchers are trying it all for better cold-weather batteries
cen.acs.org
December 31, 2025 at 11:25 AM
Electric vehicle driving range drops by 25–40% at temperatures below 5 °C as chemical reactions in the battery become sluggish. Researchers are trying various methods to improve battery performance at extreme temperatures: cen.acs.org/energy/energ... #chemsky 🧪
Reposted by Denis Vivares
Scientists collected a newly identified amoeba from California’s Lassen Volcanic National Park. It can survive at the temperature of a medium-well steak. Plus, a distant lava planet shows signs of an atmosphere: buff.ly/lTpusXX
December 29, 2025 at 12:04 AM
Scientists collected a newly identified amoeba from California’s Lassen Volcanic National Park. It can survive at the temperature of a medium-well steak. Plus, a distant lava planet shows signs of an atmosphere: buff.ly/lTpusXX
Reposted by Denis Vivares
A 16h30 sur @franceculture.fr L'Entretien archéologique parle d'une archéologie des fromages. Que sait-on des recettes et de la fabrication des fromages antiques ? Et quels goûts avaient-ils ? www.radiofrance.fr/francecultur...
Fromages antiques : du petit-lait archéologique
Faire une archéologie des fromages peut faire sourire, et pourtant ! Étudier le fromage c’est étudier l’un des aliments principaux de l’alimentation européenne depuis environ 10.000 ans. L’entretien a...
www.radiofrance.fr
December 26, 2025 at 12:05 PM
A 16h30 sur @franceculture.fr L'Entretien archéologique parle d'une archéologie des fromages. Que sait-on des recettes et de la fabrication des fromages antiques ? Et quels goûts avaient-ils ? www.radiofrance.fr/francecultur...
Reposted by Denis Vivares
Dynamic mounds made of methane at a depth of some 3,640 meters act like “frozen reefs” for a bizarre array of deep-sea creatures, new observations reveal
Bizarre Ecosystem Discovered More Than Two Miles beneath Arctic Ocean
Dynamic mounds made of methane at a depth of some 3,640 meters act like “frozen reefs” for a bizarre array of deep-sea creatures, new observations reveal
www.scientificamerican.com
December 28, 2025 at 7:35 PM
Dynamic mounds made of methane at a depth of some 3,640 meters act like “frozen reefs” for a bizarre array of deep-sea creatures, new observations reveal
Reposted by Denis Vivares
Raindrops can bounce and then roll down a slope, picking up sand as they go.
The sand-covered balls transport up to 100 times more sediment downhill than drops that don’t roll, a fact that could help make more realistic computer models of soil erosion and land change. https://scim.ag/4p7ghBE
The sand-covered balls transport up to 100 times more sediment downhill than drops that don’t roll, a fact that could help make more realistic computer models of soil erosion and land change. https://scim.ag/4p7ghBE
December 27, 2025 at 12:05 AM
Raindrops can bounce and then roll down a slope, picking up sand as they go.
The sand-covered balls transport up to 100 times more sediment downhill than drops that don’t roll, a fact that could help make more realistic computer models of soil erosion and land change. https://scim.ag/4p7ghBE
The sand-covered balls transport up to 100 times more sediment downhill than drops that don’t roll, a fact that could help make more realistic computer models of soil erosion and land change. https://scim.ag/4p7ghBE
Reposted by Denis Vivares
A wonderful reminder from physicist and author Sean M. Carroll. 📖
December 28, 2025 at 4:12 PM
A wonderful reminder from physicist and author Sean M. Carroll. 📖
Reposted by Denis Vivares
Ancient cave art is beautiful to look at—and it was likely also meant to be part of a listening experience. A growing field of archeology is uncovering the role music played during the Ice and Stone Ages. 🎶
How Did Ancient Humans Use The Acoustics Of Spaces Like Caves?
What did a vulture-bone flute sound like inside a cave? How about singing inside a tomb? Researchers are bringing ancient sounds back to life.
buff.ly
December 12, 2025 at 7:04 PM
Ancient cave art is beautiful to look at—and it was likely also meant to be part of a listening experience. A growing field of archeology is uncovering the role music played during the Ice and Stone Ages. 🎶
Reposted by Denis Vivares
Nature research paper: Synthesis of enantioenriched atropisomers by biocatalytic deracemization
go.nature.com/3JTpxuD
go.nature.com/3JTpxuD
Synthesis of enantioenriched atropisomers by biocatalytic deracemization - Nature
A new method for deracemization of atropisomers is described which leverages a P450 enzyme-mediated process involving bond rotation for enantioenrichment.
go.nature.com
November 14, 2025 at 6:19 PM
Nature research paper: Synthesis of enantioenriched atropisomers by biocatalytic deracemization
go.nature.com/3JTpxuD
go.nature.com/3JTpxuD
Reposted by Denis Vivares
La hausse des températures des océans provoque le blanchissement des récifs coralliens 🪸. Premières victimes du réchauffement climatique, ces écosystèmes vivent une « crise sans précédent ». Serge Planes écologue au @cnrs.fr fait le point. 🌊
Décryptage : SOS corail en détresse
Par leur diversité et la multiplication de leurs formes et de leurs couleurs, les récifs coralliens représentent un écosystème exceptionnel… et particulièreme
www.cnrs.fr
November 14, 2025 at 3:10 PM
La hausse des températures des océans provoque le blanchissement des récifs coralliens 🪸. Premières victimes du réchauffement climatique, ces écosystèmes vivent une « crise sans précédent ». Serge Planes écologue au @cnrs.fr fait le point. 🌊
Reposted by Denis Vivares
#Boron isotopes in cold-water corals reveal that #acidification in the #California Current and Salish Sea has outpaced atmospheric #CO2 over the industrial era, posing a threat to #ecosystems of ecological, cultural and economic value.
www.nature.com/articles/s41...
www.nature.com/articles/s41...
A century of change in the California Current: upwelling system amplifies acidification - Nature Communications
Boron isotopes in cold-water corals reveal that acidification in the California Current and Salish Sea has outpaced atmospheric CO2 over the industrial era, posing a threat to ecosystems of ecological...
www.nature.com
November 14, 2025 at 2:25 PM
#Boron isotopes in cold-water corals reveal that #acidification in the #California Current and Salish Sea has outpaced atmospheric #CO2 over the industrial era, posing a threat to #ecosystems of ecological, cultural and economic value.
www.nature.com/articles/s41...
www.nature.com/articles/s41...
Reposted by Denis Vivares
Don’t overlook the plastic footprint of fireworks
Letter to the Editor
go.nature.com
November 4, 2025 at 12:05 PM
Reposted by Denis Vivares
Extreme weather threatens the extraction of critical minerals required to produce clean energy. The consequences of these disruptions will spiral across the global economy
go.nature.com/4hEbwxq
go.nature.com/4hEbwxq
Climate change is devastating mining of minerals needed to fight it
Extreme weather threatens the extraction of critical minerals required to produce clean energy.
go.nature.com
November 4, 2025 at 3:11 PM
Extreme weather threatens the extraction of critical minerals required to produce clean energy. The consequences of these disruptions will spiral across the global economy
go.nature.com/4hEbwxq
go.nature.com/4hEbwxq
A Recyclable Cooperative Approach for Selective Lithium Recovery from Industrial‐Grade Spent Lithium‐Ion Battery Black Mass via Oxidative Delithiation and Complexation Mechanism - Choudhary - 2025 - Angewandte Chemie International Edition - Wiley Online Library share.google/7xmS008azGnG...
A Recyclable Cooperative Approach for Selective Lithium Recovery from Industrial‐Grade Spent Lithium‐Ion Battery Black Mass via Oxidative Delithiation and Complexation Mechanism
This study presents a novel method to extract lithium selectively from spent LIBs under mild conditions. The cooperative actions of anthraquinone ligand with H2O2 generate reactive oxygen species tha...
share.google
August 25, 2025 at 7:09 AM
A Recyclable Cooperative Approach for Selective Lithium Recovery from Industrial‐Grade Spent Lithium‐Ion Battery Black Mass via Oxidative Delithiation and Complexation Mechanism - Choudhary - 2025 - Angewandte Chemie International Edition - Wiley Online Library share.google/7xmS008azGnG...
A Butterfly‐Like Fluorescent Tracker for Dynamic Polymers - Zheng - 2025 - Angewandte Chemie International Edition - Wiley Online Library onlinelibrary.wiley.com/doi/10.1002/...
A Butterfly‐Like Fluorescent Tracker for Dynamic Polymers
The dynamics of reversible polymerization could be visualized using a butterfly-shaped fluorescent tracker. The emission color showed strong dependence on the microenvironmental confinement within th...
onlinelibrary.wiley.com
August 25, 2025 at 7:05 AM
A Butterfly‐Like Fluorescent Tracker for Dynamic Polymers - Zheng - 2025 - Angewandte Chemie International Edition - Wiley Online Library onlinelibrary.wiley.com/doi/10.1002/...
Reposted by Denis Vivares
Everything you need to know about hurricanes explained
From Typhoon to Eye Wall Replacement Cycle, Here’s How to Understand Hurricane Season
Everything you need to know about hurricanes explained
www.scientificamerican.com
August 21, 2025 at 1:58 PM
Everything you need to know about hurricanes explained
Reposted by Denis Vivares
Cells are particularly good at solving mazes, according to a 2020 Science study that demonstrates how they are able to navigate long and complicated routes through the body using self-generated chemoattractant gradients.
Learn more: https://scim.ag/45HBSZM #ScienceMagArchives
Learn more: https://scim.ag/45HBSZM #ScienceMagArchives
August 21, 2025 at 4:08 PM
Cells are particularly good at solving mazes, according to a 2020 Science study that demonstrates how they are able to navigate long and complicated routes through the body using self-generated chemoattractant gradients.
Learn more: https://scim.ag/45HBSZM #ScienceMagArchives
Learn more: https://scim.ag/45HBSZM #ScienceMagArchives