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A core-softened model of a glass forming fluid is numerically studied in the limit of very low temperatures. The model shows two qualitatively different behaviors depending on the strength of the attraction between particles. For no or low…

Statistical Mechanics · Physics 2009-11-07 E. A. Jagla

We develop a 3D Eulerian model to study the transport and distribution of microplastics in the global ocean. Among other benefits that will be discussed in the paper, one unique feature of our model is that it takes into consideration the…

Atmospheric and Oceanic Physics · Physics 2024-11-22 Zih-En Tseng , Yue Wu , Dimitris Menemenlis , Guangyao Wang , Chris Ruf , Yulin Pan

We have studied the mesoscopic shape fluctuations in aligned multilamellar stacks of DMPC bilayers using the neutron spin-echo technique. The corresponding in plane dispersion relation $\tau^{-1}$(q$_{||}$) at different temperatures in the…

Soft Condensed Matter · Physics 2007-05-23 Maikel C. Rheinstadter , Wolfgang Haussler , Tim Salditt

Episodes of low dissolved oxygen concentration--hypoxia--threaten the functioning of and the services provided by aquatic ecosystems, particularly those of urban rivers. Here, we disentangle oxygen-related processes in the highly modified…

Other Quantitative Biology · Quantitative Biology 2025-10-08 Ovidio García-Oliva , Carsten Lemmen , Xiangyu Li , Kai Wirtz

A close inspection of neutron spectra of glass formers in the frequency region above the boson peak does not show the constant eigenvalue density expected for a random dynamical matrix, but a slow decrease towards higher eigenvalues. In…

Disordered Systems and Neural Networks · Physics 2007-05-23 U. Buchenau , A. Wischnewski , M. Ohl , E. Fabiani

Microorganisms are ubiquitous in nature and technology. They inhabit diverse environments ranging from small river tributaries and lakes to oceans, as well as wastewater treatment plants and food manufacturing. In many of these…

Wind-blown sand, or "saltation", ejects dust aerosols into the atmosphere, creates sand dunes, and erodes geological features. We present a comprehensive numerical model of steady-state saltation that, in contrast to most previous studies,…

Fluid Dynamics · Physics 2009-01-05 Jasper F. Kok , Nilton O. Renno

We study the dynamical properties of an active particle subject to a swimming speed explicitly depending on the particle position. The oscillating spatial profile of the swim velocity considered in this paper takes inspiration from…

Soft Condensed Matter · Physics 2022-03-15 Lorenzo Caprini , Umberto Marini Bettolo Marconi , René Wittmann , Hartmut Löwen

We have revisited the composition dependence of principal properties of liquid water-DMSO mixtures by using the isobaric-isothermal molecular dynamics computer simulations. A set of non-polarizable semi-flexible models for the DMSO molecule…

Soft Condensed Matter · Physics 2022-10-10 M. Aguilar , H. Dominguez , O. Pizio

We perform a statistical study on the frequency-dependent damping of slow waves propagating along polar plumes and interplumes in the solar corona. Analysis of a large sample of extreme ultraviolet (EUV) imaging data with high spatial and…

Solar and Stellar Astrophysics · Physics 2018-02-14 Sudip Mandal , S. Krishna Prasad , Dipankar Banerjee

The loss of close-in planetary atmospheres is influenced by various physical processes, such as photoionisation, which could potentially affect the atmosphere survivability on a secular timescale. The amount of stellar radiation converted…

Earth and Planetary Astrophysics · Physics 2025-02-13 Alexandre Gillet , Antoine Strugarek , Antonio García Muñoz

We apply a hybrid Molecular Dynamics and mesoscopic simulation technique to study the steady-state sedimentation of hard sphere particles for Peclet numbers (Pe) ranging from 0.08 to 12. Hydrodynamic back-flow causes a reduction of the…

Soft Condensed Matter · Physics 2009-07-29 J. T. Padding , A. A. Louis

For modeling extreme rainfall, the widely used Brown-Resnick max-stable model extends the concept of the variogram to suit bloc maxima, allowing the explicit modeling of the extremal dependence shown by the spatial data. This extremal…

Atmospheric and Oceanic Physics · Physics 2022-08-16 Oscar E. Jurado , Marco Oesting , Henning W. Rust

There is theoretical and observational evidence that the jet core position changes with frequency. However, the core position for a given frequency may vary with time in the case of flares or for a precessing jet. In this work, we want to…

High Energy Astrophysical Phenomena · Physics 2022-04-20 R. Sharma , M. Massi , G. Torricelli-Ciamponi

Observations indicate that the Arctic sea ice cover is rapidly retreating while the Antarctic sea ice cover is steadily expanding. State-of-the-art climate models, by contrast, typically simulate a moderate decrease in both the Arctic and…

Atmospheric and Oceanic Physics · Physics 2017-10-11 Erica Rosenblum , Ian Eisenman

Benthic algae as a primary producer in riverine ecosystems develop biofilms on the riverbed. Their population dynamics involve growth and decay processes, the former owing to the balance between biological proliferation and mortality, while…

Probability · Mathematics 2026-05-08 Hidekazu Yoshioka , Kunihiko Hamagami

The scaling ranges of time correlations in the cloud base height records of marine boundary layer stratocumulus are studied applying the Detrended Fluctuation Analysis statistical method. We have found that time dependent variations in the…

Condensed Matter · Physics 2009-11-07 N. Kitova , K. Ivanova , M. Ausloos , T. P. Ackerman , M. A. Mikhalev

In nature, submarine slope failures usually carry thousands of cubic-meters of sediments across extremely long distances and cause tsunamis and damages to offshore structures. This paper uses the granular column collapse experiment to…

Geophysics · Physics 2021-08-31 Qiuyu Wang , Reihaneh Hosseini , Krishna Kumar

We study the dynamics of the solar basin -- the accumulated population of weakly-interacting particles on bound orbits in the Solar System. We focus on particles starting off on Sun-crossing orbits, corresponding to initial conditions of…

High Energy Physics - Phenomenology · Physics 2025-02-20 Cara Giovanetti , Robert Lasenby , Ken Van Tilburg

Sedimentation in active fluids has come into focus due to the ubiquity of swimming micro-organisms in natural and industrial processes. Here, we investigate sedimentation dynamics of passive particles in a fluid as a function of bacteria E.…