Results 1 to 10 of about 362,598 (371)

Crystallization in Confinement [PDF]

open access: yesAdvanced Materials, 2020
Many crystallization processes of great importance, including frost heave, biomineralization, the synthesis of nanomaterials, and scale formation, occur in small volumes rather than bulk solution.
F. Meldrum, C. O’Shaughnessy
semanticscholar   +4 more sources

Electron cyclotron heating assisted start-up experiments in J-TEXT [PDF]

open access: yesEPJ Web of Conferences, 2023
Electron cyclotron heating (ECH) breakdown and burn-through assist has been adopted to make the ITER start-up, which uses a low toroidal electric field of about 0.3 V/m, more robust.
Zhang Junli   +14 more
doaj   +1 more source

The development of 1 MW ECRH system on J-TEXT [PDF]

open access: yesEPJ Web of Conferences, 2023
A 1 MW electron cyclotron resonance heating system has been designed and developed for J-TEXT tokamak not only to enhance the total heating power but also to provide another possible way to control the plasma parameters.
Chen Xixuan   +4 more
doaj   +1 more source

Effects of COVID-19 Home Confinement on Eating Behaviour and Physical Activity: Results of the ECLB-COVID19 International Online Survey

open access: yesNutrients, 2020
Background: Public health recommendations and governmental measures during the COVID-19 pandemic have resulted in numerous restrictions on daily living including social distancing, isolation and home confinement.
A. Ammar   +55 more
semanticscholar   +2 more sources

Progression of Myopia in School-Aged Children After COVID-19 Home Confinement

open access: yesJAMA ophthalmology, 2021
Key Points Question Is home confinement due to coronavirus disease 2019 associated with the burden of myopia? Findings In this cross-sectional study that included 194 904 photoscreening tests conducted in 123 535 children, a substantial myopic shift (−0 ...
Jiaxing Wang   +14 more
semanticscholar   +1 more source

Influence of COVID-19 confinement in students performance in higher education [PDF]

open access: yesarXiv.org, 2020
This study explores the effects of COVID-19 confinement in the students’ performance in higher education. Using a field experiment of 458 students from three different subjects in Universidad Autónoma de Madrid (Spain), we study the differences in ...
T. González   +6 more
semanticscholar   +1 more source

Confined magnons [PDF]

open access: yesPhysical Review B, 2021
Magnetic structures are known to possess magnon excitations confined to their surfaces and interfaces, but these spatially localized modes are often not resolved in spectroscopy experiments. We develop a theory to calculate the confined magnon spectra and its associated spin scattering function, which is the physical observable in neutron and electron ...
Seamus Beairsto   +3 more
openaire   +2 more sources

Project Design of a Pulsed D-D Fusion Neutron Source Based on Field Reversed Configuration

open access: yes中国工程科学, 2022
The fusion neutron source is of great significance for conducting material testing for future fusion reactors, as it can genuinely reflect the change of material properties under fusion neutron irradiation.
Pan Yuan   +8 more
doaj   +1 more source

ANTI-DE SITTER SPACE, THERMAL PHASE TRANSITION AND CONFINEMENT IN GAUGE THEORIES [PDF]

open access: yes, 1998
The correspondence between supergravity (and string theory) on AdS space and boundary conformal field theory relates the thermodynamics of super-Yang–Mills theory in four dimensions to the thermodynamics of Schwarzschild black holes in anti-de Sitter ...
E. Witten
semanticscholar   +1 more source

Crystalline confinement [PDF]

open access: yesProceedings of 31st International Symposium on Lattice Field Theory LATTICE 2013 — PoS(LATTICE 2013), 2014
We show that exotic phases arise in generalized lattice gauge theories known as quantum link models in which classical gauge fields are replaced by quantum operators. While these quantum models with discrete variables have a finite-dimensional Hilbert space per link, the continuous gauge symmetry is still exact.
Banerjee D.   +3 more
openaire   +3 more sources

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