Results 61 to 70 of about 1,994 (199)

A study of the orbital evolution of 10 short-period comets by solving differential equations of motion obtained on the basis of a new principle of interaction

Vestnik Samarskogo Gosudarstvennogo Tehničeskogo Universiteta. Seriâ: Fiziko-Matematičeskie Nauki, 2007
The research of the orbital evolution of 10 short-period comets on the time interval of 400 years (1800–2200) is made by solving the differential equations of motion based on the new principle of mutual interaction of material bodies.
A. F. Zausaev
doaj   +1 more source

Types of Pain in Multiple System Atrophy

Movement Disorders, EarlyView.
Abstract Background Pain affects up to 87% of people with multiple system atrophy (MSA), but it remains unclear which types of pain contribute most to the overall burden. Objective To estimate the frequency of different types of pain in MSA individuals.
Nicole Campese, Mubasher A. Qamar, Maria Alexandra Chiriac, Georg Göbel, Julia Wanschitz, Andreas Schlager, Bianca Caliò, Fabian Leys, Pam Bower, Laura Zamarian, Anette Schrag, Roy Freeman, Horacio Kaufmann, Roberta Granata, Stefan Kiechl, Werner Poewe, Klaus Seppi, Gregor Wenning, K. Ray Chaudhuri, Alessandra Fanciulli   +19 more
wiley   +1 more source

How Long-lived Grains Dominate the Shape of the Zodiacal Cloud

The Planetary Science Journal
Grain–grain collisions shape the three-dimensional size and velocity distribution of the inner Zodiacal Cloud and the impact rates of dust on inner planets, yet they remain the least understood sink of zodiacal dust grains. For the first time, we combine
Petr Pokorný, Althea V. Moorhead, Marc J. Kuchner, Jamey R. Szalay, David M. Malaspina   +4 more
doaj   +1 more source

Viscosity Reduction in Diluted Polyethylene Melts: A Comparative Study of Semiempirical, Viscoelastic, and Equation‐of‐State Modeling Frameworks

Polymer Engineering &Science, EarlyView.
Schematic of the in‐line rheometry setup and the evaluation of three distinct modeling frameworks (semiempirical, viscoelastic, and EOS) to predict viscosity reduction in diluted polyethylene melts via time‐concentration superposition (Illustration generated via ChatGPT).
Ernst Georg Viehböck, Alexander Hammer, Markus Kirchmayr, Christof Murnig, Christian Paulik, Gerald Berger‐Weber   +5 more
wiley   +1 more source

Nongravitational Forces in Planetary Systems

The Planetary Science Journal
Nongravitational forces play surprising and, sometimes, centrally important roles in shaping the motions and properties of small planetary bodies. In the solar system, the morphologies of comets, the delivery of meteorites, and the shapes and dynamics of
David Jewitt
doaj   +1 more source

Multilayer Cellulose Acetate–Viscose Films for Bio‐Based, Bio‐Degradable Packaging Applications

Packaging Technology and Science, EarlyView.
Cellulose acetate (CA) and cellulose foils stick together comprehensively after mild cellulose sodium hydroxide treatment and heated compression. For combined foils, water barrier properties correlate with CA thickness. Oxygen permeation suffers due to the sodium hydroxide pre‐treatment induced foil changes. The composite represents a biodegradable and
Florian Wurm, Anja Rosenzopf, Tung Pham, Thomas Bechtold   +3 more
wiley   +1 more source

Survey on AI‐Enabled Computer Vision Technologies and Applications for Space Robotic Missions

Journal of Field Robotics, EarlyView.
ABSTRACT This survey provides a comprehensive overview of recent advancements and challenges in Artificial Intelligence (AI)‐enabled computer vision (CV) techniques for space robotic missions, spanning critical phases such as Entry, Descent, and Landing (EDL), orbital operations, and planetary surface exploration.
Maciej Quoos, Steven Kay, Julia Wajoras, Robert Field, Evridiki V. Ntagiou, Fakher Mohammad, Yang Gao   +6 more
wiley   +1 more source

Aligning Real‐Time Recurrence Computational Fluid Dynamics Simulations with Plant Data for the Ruhrstahl–Heraeus Degassing Process of Steel

steel research international, EarlyView.
Uncertainties exist in computational fluid dynamics (CFD) modeling of complex metallurgical processes, even when partly validated by laboratory experiments. rCFD enables computationally efficient prediction of long‐term RH degassing and can be adapted to vary flow conditions.
Xiaomeng Zhang, Maria Thumfart, Roman Rössler, Stefan Pirker   +3 more
wiley   +1 more source

The investigation of precision by Everhart method of orbital evolution of the asteroids Apollo, Amur, Aten groups and short-period comets

Vestnik Samarskogo Gosudarstvennogo Tehničeskogo Universiteta. Seriâ: Fiziko-Matematičeskie Nauki, 2008
: Investigation of evolution of the orbits 190 asteroids having closely approach with Earth is carried. The results of calculations with other investigators are compared.
A. A. Zausaev, A. F. Zausaev
doaj   +1 more source

A Thermodynamic‐Kinetic Model for Basic Oxygen Furnace Tapping: Improved Prediction of Phosphorus and Steel‐Slag Evolution

steel research international, EarlyView.
This study develops a thermodynamic–kinetic model for basic oxygen furnace tapping and validates its accuracy under near‐equilibrium and far‐from‐equilibrium initial conditions. Comparison with a reference model demonstrates its broader applicability. The model further reveals the evolution of key steel and slag components, providing new transparency ...
Puhong Cheng, Christian Bernhard, Michael Bernhard, Daniel Kavić, Jianghua Qi   +4 more
wiley   +1 more source