Tootfinder

Computational predictions of nutrient precipitation for intensified cell 1 culture media via amino acid solution thermodynamics
Jayanth Venkatarama Reddy, Nelson Ndahiro, Lateef Aliyu, Ashwin Dravid, Tianxin Xang, Jinke Wu, Michael Betenbaugh, Marc Donohue
https://arxiv.org/abs/2509.06271

Computational predictions of nutrient precipitation for intensified cell 1 culture media via amino acid solution thermodynamics
The majority of therapeutic monoclonal antibodies (mAbs) on the market are produced using Chinese Hamster Ovary (CHO) cells cultured at scale in chemically defined cell culture medium. Because of the high costs associated with mammalian cell cultures, obtaining high cell densities to produce high product titers is desired. These bioprocesses require high concentrations of nutrients in the basal media and periodically adding concentrated feed media to sustain cell growth and therapeutic protein …

Technological folie \`a deux: Feedback Loops Between AI Chatbots and Mental Illness
Sebastian Dohn\'any, Zeb Kurth-Nelson, Eleanor Spens, Lennart Luettgau, Alastair Reid, Christopher Summerfield, Murray Shanahan, Matthew M Nour
https://arxiv.org/abs/2507.19218

Technological folie à deux: Feedback Loops Between AI Chatbots and Mental Illness
Artificial intelligence chatbots have achieved unprecedented adoption, with millions now using these systems for emotional support and companionship in contexts of widespread social isolation and capacity-constrained mental health services. While some users report psychological benefits, concerning edge cases are emerging, including reports of suicide, violence, and delusional thinking linked to perceived emotional relationships with chatbots. To understand this new risk profile we need to cons…

The Missing Hard Photons of Little Red Dots: Their Incident Ionizing Spectra Resemble Massive Stars
Bingjie Wang, Joel Leja, Harley Katz, Kohei Inayoshi, Nikko J. Cleri, Anna de Graaff, Raphael E. Hviding, Pieter van Dokkum, Jenny E. Greene, Ivo Labb\'e, Jorryt Matthee, Ian McConachie, Rohan P. Naidu, Erica J. Nelson
https://arxiv.org/…

The Missing Hard Photons of Little Red Dots: Their Incident Ionizing Spectra Resemble Massive Stars
The nature of Little Red Dots (LRDs) has largely been investigated through their continuum emission, with lines assumed to arise from a broad-line region. In this paper, we instead use recombination lines to infer the intrinsic properties of the central engine of LRDs. Our analysis first reveals a tension between the ionizing properties implied from H$α$ and HeII$\,λ$4686. The high H$α$ EWs require copious H-ionizing photons, more than the bluest AGN ionizing spectra can provide. In contrast…

Terahertz field-induced metastable magnetization near criticality in FePS3
Batyr Ilyas, Tianchuang Luo, Alexander von Hoegen, Emil Vi\~nas Bostr\"om, Zhuquan Zhang, Jaena Park, Junghyun Kim, Je-Geun Park, Keith A. Nelson, Angel Rubio, Nuh Gedik
https://arxiv.org/abs/2507.06371

Terahertz field-induced metastable magnetization near criticality in FePS3
Controlling the functional properties of quantum materials with light has emerged as a frontier of condensed-matter physics, leading to the discovery of various light-induced phases of matter, such as superconductivity, ferroelectricity, magnetism and charge density waves. However, in most cases, the photoinduced phases return to equilibrium on ultrafast timescales after the light is turned off, limiting their practical applications. Here we use intense terahertz pulses to induce a metastable m…

Magnetic fields in the intracluster medium with TNG-Cluster: properties, morphology, and tangential anisotropy
Katrin Lehle, Mateusz Ruszkowski, Dylan Nelson, Marine Prunier, Annalisa Pillepich
https://arxiv.org/abs/2507.12517

Magnetic fields in the intracluster medium with TNG-Cluster: properties, morphology, and tangential anisotropy
We characterize the magnetic field properties of 352 massive galaxy clusters from the TNG-Cluster magnetohydrodynamical cosmological simulation with a focus on central magnetic field morphology in cool-core (CC) vs non-cool-core (NCC) clusters. We present the central values and radial profiles of magnetic field strength and plasma parameter as a function of mass, cooling status and redshift. Compared to low-redshift observations, TNG-Cluster produces reasonable magnetic field amplitudes in the …