Tootfinder

Digitale Passfotos: Ämter sind überlastet – vor allem auf dem Land
Eigentlich sollten seit 1. Mai nur noch Digitalbilder beim Beantragen von Ausweisen oder Pässen akzeptiert werden. Eine Ausnahmegenehmigung wird nun verlängert.

Huoltoasema pilasi pohjavettä Helsingissä #Helsinki

Huoltoasema pilasi pohjavettä Helsingissä
Teboilin omankin selvityksen mukaan Linnavuorentiellä Vartioharjussa sijaitseva huoltoasema on vuosia pilannut toiminnallaan maaperää ja pohjavettä.

Phosphates Reveal High pH Ocean Water on Enceladus
Christopher R. Glein, Ngoc Truong
https://arxiv.org/abs/2506.20937 https://arxiv.o…

Phosphates Reveal High pH Ocean Water on Enceladus
Enceladus offers our best opportunity for exploring the chemistry of an ocean on another world. Here, we perform geochemical modeling to show how the distribution of phosphate species found in ice grains from Enceladus's plume provides a very straightforward constraint on the pH of the host solution. The ratio of HPO$_4$/PO$_4$ species serves as a pH indicator. We find evidence of moderately alkaline water (pH 10.1-11.6)--significantly more alkaline than current estimates (~8-9) of the pH of En…

No wonder #establishment #Democrats and their donors are opposing. What place do "authenticity and moral vision" have in politics?

No wonder #establishment #Democrats and their donors are opposing. What place do "authenticity and moral vision" have in politics?

🇺🇦 Auf radioeins läuft...
David Bowie:
🎵 Absolute Beginners
#NowPlaying #DavidBowie
https://djaf.bandcamp.com/track/david-bowie-absolute-beginners-djaf-remix
https://open.spotify.com/track/5PBFhuXB9tgBaP31nfbkS5

Experimental Comparison of Whole-Body Control Formulations for Humanoid Robots in Task Acceleration and Task Force Spaces
Sait Sovukluk, Grazia Zambella, Tobias Egle, Christian Ott
https://arxiv.org/abs/2507.18502

Experimental Comparison of Whole-Body Control Formulations for Humanoid Robots in Task Acceleration and Task Force Spaces
This paper studies the experimental comparison of two different whole-body control formulations for humanoid robots: inverse dynamics whole-body control (ID-WBC) and passivity-based whole-body control (PB-WBC). The two controllers fundamentally differ from each other as the first is formulated in task acceleration space and the latter is in task force space with passivity considerations. Even though both control methods predict stability under ideal conditions in closed-loop dynamics, their rob…

🇺🇦 #NowPlaying on KEXP's #MorningShow
Now Always Fades:
🎵 Mindflower
#NowAlwaysFades
https://northernundergroundrecords.bandcamp.com/track/mindflower
https://open.spotify.com/track/57hqFySP2QJFuudulgBeZB

Network-Independent Incremental Passivity Conditions for Grid-Forming Inverter Control
Jared Miller, Maitraya Avadhut Desai, Xiuqiang He, Roy S. Smith, Gabriela Hug
https://arxiv.org/abs/2506.14469

Network-Independent Incremental Passivity Conditions for Grid-Forming Inverter Control
Grid-forming inverters control the power transfer between the AC and DC sides of an electrical grid while maintaining the frequency and voltage of the AC side. This paper focuses on ensuring large-signal stability of an electrical grid with inverter-interfaced renewable sources. We prove that the Hybrid-Angle Control (HAC) scheme for grid-forming inverters can exhibit incremental passivity properties between current and voltage at both the AC and DC ports. This incremental passivity can be cert…

Designing artificial zinc phosphate tribofilms with tailored mechanical properties by altering the chain length
Sebastian Lellig, Subisha Balakumar, Peter Schweizer, Eva P. Mayer, Simon Evertz, Marcus Hans, Damian M. Holzapfel, Yin Du, Qing Zhou, Martin Dienwiebel, Johann Michler, Jochen M. Schneider
https://arxiv.org/abs/2506.1…

Designing artificial zinc phosphate tribofilms with tailored mechanical properties by altering the chain length
Zinc dialkyldithiophosphate (ZDDP), as the most prominent lubrication additive, forms tribofilms consisting primarily of zinc phosphate glasses containing sulfides. As sulfur is linked to environmental concerns, sulfur-free zinc phosphate coatings have been sputtered from a Zn3(PO4)2 target and investigated here. Based on the bridging to non-bridging oxygen ratio, determined by X-ray photoelectron spectroscopy (XPS), the as deposited coatings are classified as metaphosphates. As the annealing t…