Tootfinder

Endless cycles of greed-based wars and endless cycles of greed-based “AI” and endless cycles of greed-based fascism rising

Linking habitats strengthens wildlife microbiomes, helps fight disease: Study https://news.mongabay.com/2026/04/linking-habitats-strengthens-wildlife-microbiomes-helps-fight-disease-study/

Linking habitats strengthens wildlife microbiomes, helps fight disease: Study
A new study has found that when deforestation and land use change break up key habitats vital to amphibian life cycles, those disconnects can play havoc with the animals’ microbiome, leaving them more susceptible to disease. This troubling finding could also apply to a host of other species, the study researchers say, but may also […]

🌱 Fast-growing trees are taking over the forests of the future and putting biodiversity, climate resilience under pressure
https://phys.org/news/2026-01-fast-trees-forests-future-biodiversity.html

Fast-growing trees are taking over the forests of the future and putting biodiversity, climate resilience under pressure
Trees play a central role in life on Earth. They store CO₂, provide habitats for animals, fungi, and insects, stabilize soils, regulate water cycles, and supply resources that humans rely on—from timber and food to recreation and shade on a hot day.

Itämeri on edelleen pilaantunut vuosikymmenten ravinteiden valumien ja niitä estävien tekojen takia, muttamiksi?
Why the Baltic Sea still chokes after decades of nutrient controls https://phys.org/news/2026-02-baltic-sea-decades-nutrient.html

Why the Baltic Sea still chokes after decades of nutrient controls
The Baltic Sea has been under pressure for decades: Although phosphorus and nitrogen river loads, the main cause for its eutrophication, have been significantly reduced, adverse effects such as algal blooms and oxygen depletion still massively occur, leading to further ecological problems. Scientists at the Leibniz Institute for Baltic Sea Research Warnemünde (IOW) have now published a comprehensive review showing how nutrient pollution, internal matter cycles and global warming interact, ther…

Donald Knuth is quite enthusiastic about his recent experiences with generative AI: #Knuth

Audrey Watters writes about how the #AI 'tsunami' in #edtech follows the same trajectory as all the previous technological hype cycles:
"There will be no “AI” tutor revolution just as there was no MOOC revolution just as there was no personalized learning revolution just as there was no computer-assisted instruction revolution just as there was no teaching machine revolution."
https://2ndbreakfast.audreywatters.com/the-broken-record/

Cycles Tosi
#bicycle #bici

Acoustic Signatures of Pinch-Off Cavities During Water-Entry
Zirui Liu, Tongtong Ding, Mingyue Kuang, Zimeng Li, Junyi Zhao, A-Man Zhang, Shuai Li
https://arxiv.org/abs/2602.22761 https://arxiv.org/pdf/2602.22761 https://arxiv.org/html/2602.22761
arXiv:2602.22761v1 Announce Type: new
Abstract: This study experimentally, numerically, and theoretically investigates the cavity/bubble dynamics and radiated acoustics during the water entry of a centimeter-scale cylindrical projectile with a conical nose. Experiments were conducted in a laboratory tank, employing synchronized high-speed imaging and hydrophone measurements to characterize the cavity closure modes and their resultant acoustic signatures across a range of Froude numbers. The acoustic signal features a weak radiated signal upon impact, followed by significant pressure oscillations spanning more than 20 cycles in the flow field after cavity elongation and pinch-off. A numerical model based on the Finite Volume Method (FVM) successfully captures these physical processes. Subsequently, a semi-theoretical model that incorporates the projectile's boundary effect is developed from potential flow theory. The model not only yields a dominant cavity oscillation frequency that agrees well with experimental data, but also reveals that the boundary effect leads to a cavity oscillation frequency markedly higher than the Minnaert frequency of an equivalent-volume ellipsoidal bubble containing an internal rigid core. The dominant cavity frequency falls nearly linearly with Fr, governed by nose geometry and projectile inertia. This study clarifies the underlying physics connecting cavity dynamics during water entry to underwater acoustic radiation.
toXiv_bot_toot