Tootfinder

🐛 Using nanotechnology to target crop-munching pests and spare beneficial bugs
https://phys.org/news/2025-09-nanotechnology-crop-munching-pests-beneficial.html

Using nanotechnology to target crop-munching pests and spare beneficial bugs
A bane of farmers' existence, it's estimated that plant-eating pests are responsible for the loss of up to 40% of pre-harvest yields globally. But a new generation of crop treatments that target only "bad" bugs could mean big gains for the Canadian agriculture sector, improving pest management tools in an industry that in 2024 generated over $142 billion.

NFL announcer superlatives: The best in the booth for football's biggest moments https://www.nytimes.com/athletic/6616630/2025/09/12/nfl-announcer-superlatives-joe-buck-jim-nantz-al-michaels-mike-tirico/

"mass producing devices combining multiple types of nanotechnology each of which individually strains against what is even possible in our universe at all, providing access to them to the general public as a boring and everpresent commodity, then having the general public store porn on them" is peak technological civilization ht…

Nondegeneracy of positive solutions for critical Hartree equation on Heisenberg group and it's applications
Minbo Yang, Shuijin Zhang
https://arxiv.org/abs/2508.07719 https:…

Nondegeneracy of positive solutions for critical Hartree equation on Heisenberg group and it's applications
We study the uniqueness and nondegeneracy of positive bubble solutions for the generalized energy-critical Hartree equation on the Heisenberg group $\mathbb{H}^{n}$, \begin{equation}\label{0.1} -Δ_{\mathbb{H}}u=\left(\int_{\mathbb{H}^{n}}\frac{|u(η)|^{Q^{\ast}_μ}}{|η^{-1}ξ|^μ}\mathrm{d}η\right)|u|^{Q^{\ast}_μ-2}u,~~~ξ,η\in\mathbb{H}^{n}, \end{equation} where $Δ_{\mathbb{H}}$ represents the Kohn Laplacian, $u(η)$ is a real-valued function, $Q=2n+2$ is …

Fusion and Fission of Particle-like Chiral Nematic Vortex Knots
Darian Hall, Jung-Shen Benny Tai, Louis H. Kauffman, Ivan I. Smalyukh
https://arxiv.org/abs/2508.05841 https://…

Fusion and Fission of Particle-like Chiral Nematic Vortex Knots
Vortex knots have been seen decaying in many physical systems. Here we describe topologically protected vortex knots, which remain stable and undergo fusion and fission while conserving a topological invariant analogous to that of baryon number. While the host medium, a chiral nematic liquid crystal, exhibits intrinsic chirality, cores of the vortex lines are structurally achiral regions where twist cannot be defined. We refer to them as "dischiralation" vortex lines, in analogy to dislocations…

Weak phonon coupling to nematic quantum critical mode in $BaFe2(As1-xPx)2$
S. Wu, D. Ishikawa, A. Q. R. Baron, A. Alatas, A. H. Said, Jiayu Guo, Y. He, X. Chen, Y. Song, J. G. Analytis, Dung-Hai Lee, R. J. Birgeneau
https://arxiv.org/abs/2509.07114

Weak phonon coupling to nematic quantum critical mode in $BaFe2(As1-xPx)2$
In this work, we investigate the softening of the in-plane transverse acoustic phonon driven by electronic nematicity in BaFe$_2$(As$_{1-x}$P$_x$)$_2$ using inelastic X-ray scattering, with a focus on the optimally doped sample ($x = 0.31$) sample, a system exhibiting signatures of a putative nematic quantum critical point and minimal disorder among iron pnictides. We observe only a modest softening of the phonon frequency and no evidence of critical damping, suggesting that the nematic quantum…

A fire will be lit in Galway this September as
Misleór Festival of Nomadic Cultures returns for its seventh annual gathering.
It celebrates and brings together nomadic voices from Traveller, Roma, Sšmi, Inuit, and other indigenous communities in a crossroads of cultures.
https://…

Misleór Festival of Nomadic Cultures will light a fire in Galway this month - This is Galway
A fire will be lit in Galway this September as Misleór Festival of Nomadic Cultures returns for its seventh annual gathering. Find out more about the festival programme here...

Observables of Relative Structures and Lie 2-algebras associated with Quasi-Hamiltonian $G$-spaces
Dinamo Djounvouna
https://arxiv.org/abs/2509.08153 https://

Observables of Relative Structures and Lie 2-algebras associated with Quasi-Hamiltonian $G$-spaces
A manifold is said to be $n$-plectic if it is equipped with a closed, nondegenerate $(n+1)$-form. This thesis develops the theory of \emph{relative $n$-plectic structures}, where the classical condition is replaced by a closed, nondegenerate \emph{relative} $(n+1)$-form defined with respect to a smooth map. Analogous to how $n$-plectic manifolds give rise to $L_\infty$-algebras of observables, we show that relative $n$-plectic structures naturally induce corresponding $L_\infty$-algebras. These…

Global strong solutions to the frame hydrodynamics for biaxial nematic phases
Minjiang Feng, Sirui Li, Qi Zeng
https://arxiv.org/abs/2508.06376 https://arx…

Global strong solutions to the frame hydrodynamics for biaxial nematic phases
In this article, we consider the frame hydrodynamics of biaxial nematic phases, a coupled system between the evolution of the orthonormal frame and the Navier--Stokes equation, which is derived from a molecular-theory-based dynamical tensor model about two second-order tensors. In two and three dimensions, we establish global well-posedness of strong solutions to the Cauchy problem of frame hydrodynamics for small initial data. The key ingredient of the proof relies on estimates of nonlinear te…

Actin driven morphogenesis in hydra
Sabyasachi Mukherjee, Anirban Sain
https://arxiv.org/abs/2509.08655 https://arxiv.org/pdf/2509.08655

Actin driven morphogenesis in hydra
Hydra, a centimeter long cylindrical-shaped freshwater organism, has emerged as an interesting model system for studying morphogenesis in animals. Recently, fluorescent imaging of cytoskeletal actin filaments on the outer surface of hydra has revealed nematic-type arrangement of actin filaments. {Several topological defects in the nematic field have also been detected. In particular, aster-like +1 defects appear at the curved head of hydra and at the tip of its tentacles, while -1/2 defects are…