Results 311 to 320 of about 519,225 (355)

THE CONFINEMENT TERM

Modern Physics Letters A, 2010
Motivated by arguments based on spontaneous breaking of scale invariance, a term of the form [Formula: see text] is introduced in the action of the gauge fields. For N<0 this leads to linear confinement, while for N>0, after appropriate regularization, this leads to the vanishing of the gauge fields beyond a critical length, i.e.
Guendelman, E. I., Korover, I.
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Impact of Core Diameter and Porosity on Confinement Loss in Photonic Crystal Fibers Across Terahertz Frequencies

2025 International Conference on Quantum Photonics, Artificial Intelligence, and Networking (QPAIN)
This study investigates the impact of core diameter and porosity on confinement loss (CL) in photonic crystal fibers (PCFs) across terahertz (THz) frequencies ranging from 1 THz to 1.5 THz.
A. T. Naziba, Mahmudul Hoque Mahmud, Manika Tun Nafisa, S. M. Atiqur Rahman, Ariful Hoque Maruf, Md. Tabil Ahammed, Mohammad Nasir Uddin   +6 more
semanticscholar   +1 more source

Mechanism of Heterogeneous Fenton Reaction Kinetics Enhancement under Nanoscale Spatial Confinement.

Environmental Science and Technology, 2020
Nanoscale catalysts that can enable Fenton-like chemistry and produce reactive radicals from hydrogen peroxide activation have been extensively studied in order to overcome the limitations of homogeneous Fenton processes.
Shuo Zhang, Meng Sun, Tayler Hedtke, Akshay Deshmukh, Xuechen Zhou, S. Weon, M. Elimelech, Jae-Hong Kim   +7 more
semanticscholar   +1 more source

Confinement of quarks

Nuclear Physics A, 2003
A general introduction to the topological mechanism responsible for the absolute confinement of quarks inside hadronic bound states is given, including the effects of a finite instanton angle. We then propose a calculational technique for computing these states and their properties, where instead of topology we rely on a perturbative mechanism.
G. 't Hooft
semanticscholar   +3 more sources

Recent Advances in Catalytic Confinement Effect within Micro/Meso-Porous Crystalline Materials.

Small, 2021
Micro/meso-porous crystalline materials with a well-defined pore structure, such as zeolites, carbon nanotubes, and metal-organic frameworks, are of great significance in the development of catalytic systems for scientific and industrial demands.
Jingjing Dai, Hongbo Zhang
semanticscholar   +1 more source

confine(S)

ACM SIGGRAPH ASIA 2008 computer animation festival, 2008
A human being consists of two elements: "surface and shadow." These two opposite elements are themes of this work, in which a human being is subduing the monster that lurks in the mind.
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Confinement Effects in Zeolite‐Confined Noble Metals

Angewandte Chemie International Edition, 2019
AbstractConfinement of noble nanometals in a zeolite matrix is a promising way to special types of catalysts that show significant advantages in size control, site adjustment, and nano‐architecture design. The beauty of zeolite‐confined noble metals lies in their unique confinement effects on a molecular scale, and thus enables spatially confined ...
Si‐Ming Wu, Xiao‐Yu Yang, Christoph Janiak   +2 more
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Confinement studies on RFX

Plasma Physics and Controlled Fusion, 1993
The results of the first year of operation of the experiment RFX are reported. Profiles of electron density, electron and ion temperature and impurity emission have been measured at plasma current ...
Antoni V, Apolloni L, Bagatin M, Baker W, Bassan M, Bellina F, Benfatto I, Bergsker H, Buffa A, Campostrini P, Cappello S, Carraro L, Casarotto E, Chitarin G, Collarin P, Costa S, De Lorenzi A, Desideri D, Fauri M, Ferrer C, Fiorentin P, Gaio E, Giudicotti L, Gnesotto F, Gurnieri M, Guatieri R, Hemming O, Innocente P, Kusstatscher P, Luchetta A, Malesani G, Manduchi G, Marchiori G, Martin P, Martines E, Martini S, Maschio A, Moresco M, Murari A, O'Leary P, Paccagnella R, Pasqualotto R, Piovan R, Pomaro N, Puiatti ME, Rostagni G, Sardella A, Scarin P, Schmidt V, Serianni G, Sonato P, Spada E, Stella A, Toigo V, Tramontin L, Trevisan F, Valisa M, Vitturi S, Zaccaria P, Zilli E, Zollino G   +60 more
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Confined–unconfined flow in a horizontal confined aquifer

Journal of Hydrology, 2003
Mixed confined and unconfined groundwater flow occurs in a bounded initially dry aquifer when the hydraulic head at the side boundary suddenly rises above the elevation of the aquifer's top boundary. The flow problem as modelled by the Boussinesq equation is non-trivial because of the involvement of two moving boundaries.
Li, L., Lockington, D. A., Barry, D. A., Parlange, J.-Y., Perrochet, P.   +4 more
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SPECTROSCOPY AND CONFINEMENT

International Journal of Modern Physics A, 2003
In this talk I progress semi-historically from the potential model as applied to heavy onia states to the QCD string dynamics of light quark mesons. The virtues and problems of the potential model are reviewed. Some of the difficulties are solved by the introduction of QCD string confinement. The method of solving string models numerically is outlined
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