Results 41 to 50 of about 3,181,240 (276)

Active Matter on Asymmetric Substrates

, 2011
For collections of particles in a thermal bath interacting with an asymmetric substrate, it is possible for a ratchet effect to occur where the particles undergo a net dc motion in response to an ac forcing.
Drocco, J., Mai, T., Reichhardt, C., Reichhardt, C. J. Olson, Wan, M. B.   +4 more
core   +1 more source

Informational active matter

, 2023
Abstract Many biomolecular systems can be viewed as ratchets that rectify environmental noise through measurements and information processing. As miniaturized robots cross the scale of unicellular organisms, on-board sensing and feedback open new possibilities for propulsion strategies that exploit fluctuations rather than fight them.
Bryan VanSaders, Vincenzo Vitelli
openaire   +3 more sources

Active Galactic Nuclei and Transformation of Dark Matter into Visible Matter

, 2009
The hypothesis that dark matter is converted into visible particles in active galactic nuclei is investigated. If dark matter consists of stable superheavy neutral particles and active galactic nuclei are rotating black holes, then, due to the Penrose ...
A. A. Grib, A. A. Grib, A. A. Grib, A. A. Grib, A. A. Grib, A. A. Grib, H. V. Klapdor-Kleingrothaus, J. F. Navarro, K. Greisen, L. H. Ford, M. Gell-Mann, S. Chandrasekhar, The Pierre Auger Collaboration, V. K. Dubrovich, Ya. B. Zel’dovich, Yu. V. Pavlov   +15 more
core   +1 more source

The masses of active neutrinos in the nuMSM from X-ray astronomy [PDF]

, 2006
In an extention of the Standard Model by three relatively light right-handed neutrinos (the nuMSM model) the role of the dark matter particle is played by the lightest sterile neutrino.
A. Boyarsky, A. D. Dolgov, A. Kusenko, A. Neronov, A. Strumia, D. N. C. Lin, E. K. Akhmedov, K. Abazajian, M. Shaposhnikov, O. Ruchayskiy, P. B. Pal, P. Minkowski, S. Dodelson, S. H. Hansen, S. Tremaine, T. Asaka, T. Asaka, V. D. Barger, X. Shi   +18 more
core   +3 more sources

Macroscopic, artificial active matter

National Science Open
Artificial active matters on a macroscopic scale, including vibrating particles, robots, and camphor boats, have attracted increasing attentions due to their uniform properties, rich and easily controllable parameters, convenient observation, and the ...
Ning Luhui, Zhu Hongwei, Yang Jihua, Zhang Qun, Liu Peng, Ni Ran, Zheng Ning   +6 more
doaj   +1 more source

Active Microrheology in Active Matter Systems: Mobility, Intermittency and Avalanches

, 2015
We examine the mobility and velocity fluctuations of a driven particle moving through an active matter bath of self-mobile disks for varied density or area coverage and varied activity.
Reichhardt, C., Reichhardt, C. J. Olson
core   +1 more source

Motility-induced phase separation and coarsening in active matter [PDF]

, 2015
Active systems, or active matter, are self-driven systems which live, or function, far from equilibrium - a paradigmatic example which we focus on here is provided by a suspension of self-motile particles.
Gonnella, Giuseppe, Marenduzzo, Davide, Suma, Antonio, Tiribocchi, Adriano   +3 more
core   +2 more sources

Why and When Are Evidence‐Based Interventions Adopted in Paediatric Supportive Care? A Qualitative Exploration of the Determinants of Photobiomodulation Implementation

Pediatric Blood &Cancer, EarlyView.
ABSTRACT Background Oral mucositis is a common and debilitating side effect of childhood cancer and stem cell transplant treatments. It affects the quality of life of children and young people (CYP) and places a strain on services. Photobiomodulation is recommended for oral mucositis prevention in international guidance but is poorly implemented in UK ...
Claudia Heggie, Kara A. Gray‐Burrows, Peter F. Day, Bob Phillips, Carl A. Thompson   +4 more
wiley   +1 more source

Effective temperature of active complex matter

, 2011
We use molecular dynamics simulations to study the dynamics of an ensemble of interacting self-propelled semi-flexible polymers in contact with a thermal bath. Our intention is to model complex systems of biological interest.
Cugliandolo, Leticia F., Loi, Davide, Mossa, Stefano   +2 more
core   +1 more source

Clinical Insights Into Hypercalcemia of Malignancy in Childhood

Pediatric Blood &Cancer, EarlyView.
ABSTRACT Hypercalcemia of malignancy (HCM) is a rare but life‐threatening metabolic emergency in children that occurs in less than 1% of pediatric cancer cases, with a reported incidence ranging from 0.4% to 1.0% across different studies. While it is observed in 10%–20% of adult malignancies, pediatric HCM remains relatively uncommon.
Hüseyin Anıl Korkmaz
wiley   +1 more source