Tootfinder

😵‍💫 Targeted ultrasound can shape the brain's reward-seeking mechanisms
#ultrasound

Targeted ultrasound can shape the brain's reward-seeking mechanisms
The nucleus accumbens is a tiny element of the human brain triggered when we experience something enjoyable, and used to help us learn behaviors that lead to rewards. A new study has shown for the first time that its influence on human behavior can be altered using transcranial ultrasound stimulation (TUS).

My first attempt at desoldering a BGA chip and it worked really well. Chip cleaned up nicely as well.
Disclaimer: I don't plan on using this chip or board again. So, I don't need it to work at the end.
#retrocomputing
#desoldering

Die ultrarechte Renaissance des Westens https://www.german-foreign-policy.com/news/detail/10173

"Mercedes unveils car with 20% efficient ultra-thin solar coating’"
#Cars #Vehicles
https://w…

Mercedes unveils car with 20% efficient ultra-thin solar coating
Mercedes-Benz unveiled its first car prototype with a silicon-free, 20%-efficient nanoparticle solar coating that powers the vehicle even when off and uses modules thinner than a human hair.

Source: Sam Altman's Merge Labs, which seeks to read brain activity using ultrasound, is being spun out of LA-based nonprofit Forest Neurotech (Emily Mullin/Wired)
https://www.wired.com/story/sam-altman-brain-computer-interf…

Sam Altman’s New Brain Venture, Merge Labs, Will Spin Out of a Nonprofit
Merge Labs, a brain-computer interface startup that seeks to read brain activity using ultrasound, is being spun out of Forest Neurotech, a Los Angeles nonprofit.

WIRED: Sam Altman’s new brain venture, Merge Labs, will spin out of a nonprofit, Forest Neurotech https://www.wired.com/story/sam-altman-brain-computer-interface-merge-labs-spin-out-nonprofit-forest-neurotech/ Focus on usin…

Sam Altman’s New Brain Venture, Merge Labs, Will Spin Out of a Nonprofit
Merge Labs, a brain-computer interface startup that seeks to read brain activity using ultrasound, is being spun out of Forest Neurotech, a Los Angeles nonprofit.

Viele Accounts, die sich auf US-Politik konzentrierten und Wut provozieren wollten, haben ihren Sitz außerhalb der USA. Profile wie ULTRAMAGA🇺🇸TRUMP🇺🇸2028 wurden in Nigeria entlarvt. Ein verifizierter Account, der sich als Grenzbeauftragter Tom Homan ausgab, wurde nach Osteuropa zurückverfolgt. Und America_First0 aus Bangladesch. Ein Netzwerk von „Trump-unterstützenden unabhängigen Frauen”, die behaupteten, aus Amerika zu stammen, befand sich in Wirklichkeit in Thailand.

About This Account reveals the scale of X’s foreign troll problem
X’s About This Account reveals the scale of its foreign troll problem, confirming that many MAGA accounts aren’t actually American.

Teuer, veraltet, wenig sinnvoll: Hat Apple den Mac Pro abgeschrieben?
Der einstige Vorzeige-Mac im Tower-Gehäuse fristet schon lange ein Schattendasein. Angeblich plant Apple aktuell nicht, ihn mit dem M5 Ultra aufzurüsten.

Endless Trails Podcast
Every ultra-runner has a first step, and usually it's not pretty...
Great Australian Pods Podcast Directory: https://www.greataustralianpods.com/endless-trails/

High-precision luminescence cryothermometry strategy by using hyperfine structure
Marina N. Popova, Mosab Diab, Boris Z. Malkin
https://arxiv.org/abs/2511.19088 https://arxiv.org/pdf/2511.19088 https://arxiv.org/html/2511.19088
arXiv:2511.19088v1 Announce Type: new
Abstract: A novel, to the best of our knowledge, ultralow-temperature luminescence thermometry strategy is proposed, based on a measurement of relative intensities of hyperfine components in the spectra of Ho$^{3 }$ ions doped into a crystal. A $^{7}$LiYF$_4$:Ho$^{3 }$ crystal is chosen as an example. First, we show that temperatures in the range 10-35 K can be measured using the Boltzmann behavior of the populations of crystal-field levels separated by an energy interval of 23 cm$^{-1}$. Then we select the 6089 cm$^{-1}$ line of the holmium $^5I_5 \rightarrow ^5I_7$ transition, which has a well-resolved hyperfine structure and falls within the transparency window of optical fibers (telecommunication S band), to demonstrate the possibility of measuring temperatures below 3 K. The temperature $T$ is determined by a least-squares fit to the measured intensities of all eight hyperfine components using the dependence $I(\nu) = I_1 \exp(-b\nu)$, where $I_1$ and $b = a\nu \frac{\nu}{kT}$ are fitting parameters and a accounts for intensity variations due to mixing of wave functions of different crystal-field levels by the hyperfine interaction. In this method, the absolute and relative thermal sensitivities grow at $T$ approaching zero as $\frac{1}{T^2}$.and $\frac{1}{T}$, respectively. We theoretically considered the intensity distributions within hyperfine manifolds and compared the results with experimental data. Application of the method to experimentally measured relative intensities of hyperfine components of the 6089 cm$^{-1}$ PL line yielded $T = 3.7 \pm 0.2$ K. For a temperature of 1 K, an order of magnitude better accuracy is expected.
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