Results 41 to 50 of about 7,430 (235)

The First Quantitative Study of Cometary Tail Regrowth following a Coronal Mass Ejection-driven Disconnection Event

The Astrophysical Journal
Comet C/2023 P1 (Nishimura) was observed by the Solar Orbiter Heliospheric Imager (SoloHI), on board the Solar Orbiter spacecraft, from 2023 September 1 to 14.
Shaheda Begum Shaik, Guillermo Stenborg, Phillip Hess, Angelos Vourlidas, Karl Battams, Robin Colaninno   +5 more
doaj   +1 more source

Reversing Temozolomide Resistance in Glioblastoma Based on Cuproptosis‐Mediated Positive Feedback Loop

Advanced Science, EarlyView.
To effectively reverse TMZ resistance, this work proposes a cuproptosis‐mediated positive feedback loop that integrates mitochondrial dysfunction, ATP depletion, AMPK‐p53 signaling, and glycolytic inhibition, ultimately amplifying cell death. This cuproptosis‐mediated feedback loop simultaneously disrupts multiple resistance pathways in GBM, including ...
Wenjie Feng, Rui Yang, Chang Weng, Chen Li, Wanrui Shi, Yang Chen, Yang Yang, Yi Liu, Pengfei Ge, Hao Zhang   +9 more
wiley   +1 more source

On the Early Thermal Processing of Planetesimals during and after the Giant Planet Instability

The Planetary Science Journal
Born as ice-rich planetesimals, cometary nuclei were gravitationally scattered onto their current orbits in the Kuiper Belt and the Oort Cloud during the giant planets’ dynamical instability in the early stages of our solar system’s history.
Anastasios Gkotsinas, David Nesvorný, Aurélie Guilbert-Lepoutre, Sean N. Raymond, Nathan Kaib   +4 more
doaj   +1 more source

MIR Spectra and Analysis of Jovian Trojan Asteroids

The Planetary Science Journal, 2023
Jovian Trojan asteroids make up a large group of primitive bodies that populate Jupiter's L4 and L5 Lagrange points. The Trojans’ dynamics and composition carry insight into the formation mechanisms that shaped our solar system. Mid-infrared (MIR; 5–35 μ
Audrey C. Martin, Joshua P. Emery
doaj   +1 more source

Dynamical constraints on the origin of Main Belt comets [PDF]

Meteoritics & Planetary Science, 2009
Abstract— In an effort to understand the origin of Main Belt comets (MBCs) 7968 Elst‐Pizzaro, 118401, and P/2005 U1, the dynamics of these three icy asteroids and a large number of hypothetical MBCs were studied. Results of extensive numerical integrations of these objects suggest that they were formed in place through the collisional breakup of a ...
openaire   +2 more sources

From Circuits to Symphonies: A Systems‐Engineering Blueprint for Multimicrobial Synthetic Biology

Advanced Science, EarlyView.
Engineering synthetic microbial consortia requires moving beyond intracellular genetic circuits toward coordinated multicellular design. A modular systems‐engineering framework is presented that integrates communication, temporal coordination, ecological structuring, and predictive modeling to guide application‐dependent consortium design ...
Miguel Fernández‐Niño, Ludger A. Wessjohann, José Manuel Guillamón, Daniela Burgos‐Toro, Silvia Moriano‐Gutiérrez, Giacomo Di Matteo, Zia‐ul Islam, Rinke van van Tatenhove‐Pel, Vanessa Rossetto Marcelino, Rodrigo Ledesma‐Amaro   +9 more
wiley   +1 more source

Jupiter Co-Orbital Comet P/2023 V6 (PANSTARRS): Orbital History and Modern Activity State

The Astrophysical Journal Letters
The discovery of the transient Jupiter co-orbital comet P/2019 LD2 (ATLAS) drew significant interest. Not only will LD2 transition between being a Centaur and a Jupiter-family comet (JFC) in 2063, the first time this process can be observed as it happens,
Theodore Kareta, John W. Noonan, Kathryn Volk, Ryder H. Strauss, David Trilling   +4 more
doaj   +1 more source

Alpha 7 nicotinic receptors attenuate neurite development through calcium activation of calpain at the growth cone.

PLoS ONE, 2018
The α7 nicotinic acetylcholine receptor (nAChR) is a ligand-gated ion channel that plays an important role in cellular calcium signaling contributing to synaptic development and plasticity, and is a key drug target for the treatment of neurodegenerative ...
Justin R King, Nadine Kabbani
doaj   +1 more source

Alternative Policy Designs to Help Farmers Select Profitable Conservation Practices

Agribusiness, EarlyView.
ABSTRACT Voluntary private carbon initiatives (VPCIs) promote the implementation of agricultural conservation practices that mitigate emissions of greenhouse gases (GHGs) via financial incentives to participating farmers. Simultaneously, an array of public policies supports the adoption of conservation practices through technical and financial ...
Oranuch Wongpiyabovorn, Alejandro Plastina   +1 more
wiley   +1 more source

Gauss-Radau Small-body Simulator (GRSS): An Open-source Library for Planetary Defense

The Planetary Science Journal
We present GRSS , a small-body propagation and orbit determination library specifically designed for planetary defense applications. GRSS is an end-to-end, open-source software tool that begins with optical observations obtained from the Minor Planet ...
Rahil Makadia, Davide Farnocchia, Steven R. Chesley, Siegfried Eggl   +3 more
doaj   +1 more source