Results 111 to 120 of about 1,185,266 (267)

Activity of comets: Gas Transport in the Near-Surface Porous Layers of a Cometary Nucleus

, 2011
The gas transport through non-volatile random porous media is investigated numerically. We extend our previous research of the transport of molecules inside the uppermost layer of a cometary surface (Skorov and Rickmann, 1995; Skorov et al. 2001).
Bhatia, Bird, Blum, Boudreau, Carman, Carman, Clausing, Crifo, Davidsson, Davidsson, Davidsson, Dixmier, Dullien, Enzian, Fanale, Fulle, Groussin, Groussin, Grün, Horst U. Keller, Johnson, Jürgen Blum, Keller, Kossacki, Levitz, Levitz, Markin, Maxwell, Mekler, Pavlovitch, Petersen, Prialnik, Rayleigh, Rik van Lieshout, Salem, Schleicher, Skorov, Skorov, Skorov, Smoluchowski, Song, Steiner, Torquato, van der Hoef, Wen, Whipple, Whipple, Yuri V. Skorov   +47 more
core   +3 more sources

Amyotrophic Lateral Sclerosis Prevalence Projection in 2040: A Less Rare Disease

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective To project ALS prevalence across multiple countries through 2040, accounting for both population aging and increased survival. Methods Data from the Piemonte and Valle d'Aosta ALS register (PARALS) was used to estimate the trends in incidence and prevalence from 2005 to 2019. Survival trends over this period were also assessed.
Rosario Vasta, Stefano Callegaro, Antonio Canosa, Umberto Manera, Maurizio Grassano, Francesca Palumbo, Sara Cabras, Enrico Matteoni, Francesca Di Pede, Filippo De Mattei, Salvatore Tafaro, Neil M. Thakur, Ryan Grosenick, Fabiola De Marchi, Letizia Mazzini, Cristina Moglia, Andrea Calvo, Kuldip D. Dave, Adriano Chiò   +18 more
wiley   +1 more source

Investigating the contribution of grown new particles to cloud condensation nuclei with largely varying preexisting particles – Part 2: Modeling chemical drivers and 3-D new particle formation occurrence [PDF]

Atmospheric Chemistry and Physics
In this study, we utilized a 20-bin WRF-Chem (Weather Research and Forecasting coupled with Chemistry) regional model to investigate the contributions of chemical drivers to the growth of new particles, as well as to simulate the three-dimensional ...
M. Chu, X. Wei, S. Hai, Y. Gao, Y. Gao, H. Gao, H. Gao, Y. Zhu, B. Chu, N. Ma, J. Hong, Y. Sun, X. Yao, X. Yao, X. Yao   +14 more
doaj   +1 more source

Numerical study of Q-ball formation in gravity mediation

, 2010
We study Q-ball formation in the expanding universe on 1D, 2D and 3D lattice simulations. We obtain detailed Q-ball charge distributions, and find that the distribution is peaked at Q^{3D}_{peak} \simeq 1.9\times 10^{-2} (|\Phi_{in}|/m)^2, which is ...
Hiramatsu, Takashi, Kawasaki, Masahiro, Takahashi, Fuminobu   +2 more
core   +1 more source

The Economic Burden of Rheumatoid Arthritis in Low‐ and Middle‐Income Countries: Systematic Review and Meta‐Analysis

Arthritis Care &Research, Accepted Article.
Objective The aim of this systematic review was to synthesise the economic impact of rheumatoid arthritis (RA) on households, health systems, and society in low‐ and middle‐income countries (LMICs). Methods Electronic databases such as PubMed, Web of Science, and CINAHL were searched using keywords related to RA and cost of illness.
Tadesse Gebrye, Chidozie E.Mbada, Clara T.Fatoye, Faatihah Niyi‐Odumosu, Ushotanefe Useh, Zalmai Hakimi, Francis Fatoye   +6 more
wiley   +1 more source

Evaporation residue cross-sections as a probe for nuclear dissipation in the fission channel of a hot rotating nucleus

, 2003
Evaporation residue cross-sections are calculated in a dynamical description of nuclear fission in the framework of the Langevin equation coupled with statistical evporation of light particles.
Abe, Back, Balian, Blocki, Blocki, Bohr, Brack, Brinkmann, Chaudhuri, Chaudhuri, Davies, Diószegi, Fabris, Fröbrich, Fröbrich, Gargi Chaudhuri, Hofmann, Ignatyuk, Kramers, Mavlitov, Morton, Pal, Rossner, Santanu Pal, Sierk, Sierk, Thoennessen, Wada, Wada   +28 more
core   +1 more source

A Q‐Learning Algorithm to Solve the Two‐Player Zero‐Sum Game Problem for Nonlinear Systems

International Journal of Adaptive Control and Signal Processing, Volume 39, Issue 3, Page 566-581, March 2025.
A Q‐learning algorithm to solve the two‐player zero‐sum game problem for nonlinear systems. ABSTRACT This paper deals with the two‐player zero‐sum game problem, which is a bounded L2$$ {L}_2 $$‐gain robust control problem. Finding an analytical solution to the complex Hamilton‐Jacobi‐Issacs (HJI) equation is a challenging task.
Afreen Islam, Anthony Siming Chen, Guido Herrmann   +2 more
wiley   +1 more source

Data‐Driven Distributed Safe Control Design for Multi‐Agent Systems

International Journal of Adaptive Control and Signal Processing, EarlyView.
This paper presents a data‐driven control barrier function (CBF) technique for ensuring safe control of multi‐agent systems (MASs) with uncertain linear dynamics. A data‐driven quadratic programming (QP) optimization is first developed for CBF‐based safe control of single‐agent systems using a nonlinear controller. This approach is then extended to the
Marjan Khaledi, Bahare Kiumarsi
wiley   +1 more source

Aspects of Unstructured Grids and Finite-Volume Solvers for the Euler and Navier-Stokes Equations [PDF]

, 1992
One of the major achievements in engineering science has been the development of computer algorithms for solving nonlinear differential equations such as the Navier-Stokes equations.
Barth, Timothy J.
core   +1 more source

Using a Supramolecular Approach to Engineer Modular Hydrogel Platforms for Culturing Protoplasts – from General Tissue Engineering to Cellular Agriculture

Advanced Biology, EarlyView.
Using supramolecular monomers, various hydrogel culture systems were formulated to culture protoplasts; including 2D, 2.5D, and 3D hydrogels. Depending on the culture platform, bioactive functionalization led to protoplast enlargement (2D and 2.5D) or plasmolysis (3D). This work shows the potential to modularly engineer synthetic platforms for cellular
Maritza M. Rovers, Erik J. Slootweg, Ferdinand C. O. Los, Patricia Y. W. Dankers   +3 more
wiley   +1 more source