Results 71 to 80 of about 375,845 (279)

Quadratic vector fields with a weak focus of third order [PDF]

Publicacions Matemàtiques, 1997
We study phase portraits of quadratic vector fields with a weak focus of third order at the origin. We show numerically the existence of at least 20 different global phase portraits for such vector fields coming from exactly 16 different local phase portraits available for these vector fields. Among these 20 phase portraits, 17 have no limit cycles and
Artés, J. C., Llibre, Jaume
openaire   +4 more sources

Mapping Nanoscale Protein‐Corona Kinetics of DoE‐Optimized Perfluorocarbon Encapsulated‐PLGA Nanoparticles by In Situ, Time‐Resolved Synchrotron SAXS

Advanced Healthcare Materials, EarlyView.
A two‐phase workflow (OFAT screening followed by central composite design) maps how processing variables tune PFCE‐PLGA nanoparticle size, dispersity, surface charge, loading, and 19F‐MRI signal. In situ, time‐resolved synchrotron SAXS tracks albumin‐corona growth on intact dispersions and reveals PFCE‐dependent adsorption pathways.
Joice Maria Joseph, Maria Rosa Gigliobianco, Cristina Minnelli, Paolo Moretti, Francesco Spinozzi, Giovanna Mobbili, Sara Pistolesi, Cristina Casadidio, Gabriella Teti, Roberta Censi, Stefano Antonio Gattone, Piera Di Martino   +11 more
wiley   +1 more source

Precision SMEFT bounds from the VBF Higgs at high transverse momentum

Journal of High Energy Physics, 2021
We study the production of Higgs bosons at high transverse momenta via vector-boson fusion (VBF) in the Standard Model Effective Field Theory (SMEFT). We find that contributions from four independent operator combinations dominate in this limit.
Jack Y. Araz, Shankha Banerjee, Rick S. Gupta, Michael Spannowsky   +3 more
doaj   +1 more source

Real‐Time 3D Ultrasound Imaging with an Ultra‐Sparse, Low Power Architecture

Advanced Healthcare Materials, EarlyView.
This article presents a novel, ultra‐sparse ultrasound architecture that paves the way for wearable real‐time 3D imaging. By integrating a unique convolutional array with chirped data acquisition, the system achieves high‐resolution volumetric scans at a fraction of the power and hardware complexity.
Colin Marcus, Md Osman Goni Nayeem, Aastha Shah, Jason Hou, Shrihari Viswanath, Maya Eusebio, David Sadat, Anantha P. Chandrakasan, Tolga Ozmen, Canan Dagdeviren   +9 more
wiley   +1 more source

Optimization method of a magnetic field generating a magnetic force field for magnetic nanoparticle control

AIP Advances
We present a novel method for estimating the magnetic field that can generate the desired magnetic force to move magnetic nanoparticles in a region of interest.
M. Fushimi, H. Yoshioka, M. Sekino
doaj   +1 more source

Critical structure factors of bilinear fields in O(N)-vector models

, 2001
We compute the two-point correlation functions of general quadratic operators in the high-temperature phase of the three-dimensional O(N) vector model by using field-theoretical methods.
A. Aharony, A. Aharony, A. Aharony, A. Cucchieri, A. J. Bray, A. K. Rajantie, A. K. Rajantie, A. Pelissetto, A. Pelissetto, A. Pelissetto, A. R. King, Andrea Pelissetto, B. G. Nickel, C. W. Garland, E. Brézin, E. Fawcett, Ettore Vicari, F. J. Wegner, G. A. Baker, Jr., G. A. Baker, Jr., G. Parisi, H. Rohrer, J. C. Le Guillou, J. C. Le Guillou, J. C. Le Guillou, J. D. Brock, J. D. Litster, J. F. Fernández, J. M. Carmona, J. M. Kosterlitz, J. M. Kosterlitz, L. Wu, M. Campostrini, M. Campostrini, M. Campostrini, M. E. Fisher, M. E. Fisher, M. E. Fisher, M. E. Fisher, M. E. Fisher, M. E. Fisher, M. E. Fisher, M. Hasenbusch, M. Hasenbusch, P. Butera, P. Calabrese, P. Pfeuty, Pasquale Calabrese, R. Guida, R. M. Fleming, R. Oppermann, R. R. Netz, R. R. Netz, S. A. Antonenko, S. Caracciolo, S. Girault, S. Hikami, S. Murakami, S.-C. Zhang, T. Mendes, X. Hu, Y. Yamazaki   +61 more
core   +1 more source

Resonant Domain Wall Dynamics in a Three‐Dimensional Magnetic Nano Double Helix

Advanced Materials, EarlyView.
3D magnetic nanostructures promise exciting possibilities for magnetization dynamics. However, experimental realizations remain scarce. In nanoprinted cobalt double helices, time‐resolved X‐ray microscopy reveals harmonic domain wall dynamics. Simulations identify the mode and additional higher‐frequency resonances, revealing a rich dynamic landscape ...
Pamela Morales‐Fernández, Iason Konstantinos‐Douveas, Claas Abert, Elina Zhakina, Sandra Ruiz‐Gómez, Claudia Fernández‐González, Luke Alexander Turnbull, Sebastian Wintz, Markus König, Simone Finizio, Markus Weigand, Naëmi Leo, Dieter Suess, Aurelio Hierro‐Rodríguez, Amalio Fernández‐Pacheco, Claire Donnelly   +15 more
wiley   +1 more source

Nicolai maps with four-fermion interactions

Journal of High Energy Physics, 2023
Nicolai maps offer an alternative description of supersymmetric theories via nonlinear and nonlocal transformations characterized by the so-called ‘free-action’ and ‘determinant-matching’ conditions.
Lorenzo Casarin, Olaf Lechtenfeld, Maximilian Rupprecht   +2 more
doaj   +1 more source

Total rigidity of generic quadratic vector fields

, 2010
12 ...
Ilyashenko, Yulij, Moldavskis, Vadims
openaire   +2 more sources

Quantum Decoherence of Nitrogen‐Vacancy Spin Ensembles in a Nitrogen Spin Bath in Diamond Under Dynamical Decoupling

Advanced Optical Materials, EarlyView.
Combining high‐order cluster‐correlation expansion with experiment, it is revealed that P1‐driven NV decoherence under dynamical decoupling deviates from semi‐classical scaling laws. The coherence‐time exponent depends on pulse number and bath conditions, demonstrating the necessity of a full quantum bath description.
Huijin Park, Mykyta Onizhuk, Eunsang Lee, Harim Lim, Junha Park, Junghyun Lee, Sangwon Oh, Giulia Galli, Hosung Seo   +8 more
wiley   +1 more source