Results 81 to 90 of about 190,947 (267)

Phase-space spectrum analysis of fast-ion resonances with externally applied 3D magnetic perturbations in the EAST tokamak

open access: yesNuclear Fusion
The spectral configurations of resonant magnetic perturbations (RMPs) play a key role in the transport and confinement of fast ions. In this paper, we aim to provide a quantitative investigation on how the RMP spectrum affects fast-ion resonances in the ...
K. He, Y. Sun, Y.Q. Liu, B.N. Wan
doaj   +1 more source

Generation of Fast Ions by Microclusters

open access: yesPlasma and Fusion Research, 2010
Laser-irradiated microclusters can generate energetic ions that produce fusion reactions. The amount and spectrum of these ions depend on the cluster-size distribution, electron heating mechanism, and cluster expansion dynamics. This paper describes recent physics results pertinent to the items listed.
AREFIEV, Alexey   +4 more
openaire   +2 more sources

Chronobiology of Cancer: How Aging Fuels Oncogenesis at the Molecular Level

open access: yesAging and Cancer, EarlyView.
This graphical abstract illustrates the key biological pathways linking aging with cancer development and progression. In the upper left, cumulative exposure to ultraviolet radiation, toxins, and reactive oxygen species (ROS) causes DNA damage and genomic instability, whereas age‐related decline in repair mechanisms, such as ATM/ATR, BER, and NER ...
Anu Singh, Aroonima Misra, Sufian Zaheer
wiley   +1 more source

Numerical assessment of the impact of the guiding-centre approximation on fast ion simulations in NSTX

open access: yesNuclear Fusion
Guiding-centre (GC) and full-orbit (FO) simulations of the beam-injected fast ion distribution and the corresponding neutron emissivity have been carried out for magnetohydrodynamics-quiescent National Spherical Torus eXperiment (NSTX) plasmas, using a ...
I. Dolby   +4 more
doaj   +1 more source

Influence of ion cyclotron range of frequencies heating on neutron emission rate in HL-3 tokamak

open access: yesHe jishu
BackgroundIon cyclotron range of frequencies (ICRF) heating is one of the most widely used auxiliary heating methods in tokamaks. The HL-3 tokamak plans to equip a 6 MW ICRF heating system to conduct discharge experiments of high-performance plasma ...
YANG Guanming   +5 more
doaj   +1 more source

Diabetes‐Associated Cognitive Impairment: Pathophysiology and Emerging Therapies

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Diabetes‐associated cognitive impairment (DACI) is a common yet underrecognized condition, manifesting along a spectrum from mild cognitive impairment to dementia. DACI encompasses patients who develop vascular dementia (VaD) or Alzheimer's disease (AD) with diabetes as a risk factor; however, in certain patients, particularly those lacking ...
Osman Corbali   +4 more
wiley   +1 more source

Observation and interpretation of core ion cyclotron emission driven by D–D fusion-produced tritium ions in EAST

open access: yesNuclear Fusion
Recently, in a series of EAST discharges using deuterium neutral beam injection (NBI), tritium (T) ions were produced via deuterium–deuterium (D–D) fusion reactions, resulting in excited ion cyclotron emission (ICE) within the plasma core in H-mode ...
Huapeng Zhang   +16 more
doaj   +1 more source

Ion acceleration mechanism in mega-ampere gas-puff z-pinches

open access: yesNew Journal of Physics, 2018
Acceleration of high energy ions was observed in z-pinches and dense plasma foci as early as the 1950s. Even though many theories have been suggested, the ion acceleration mechanism remains a source of controversy. Recently, the experiments on the GIT-12
D Klir   +25 more
doaj   +1 more source

Adaptive Foam 3D Printing of Ultralight and Multifunctional Materials

open access: yesAdvanced Engineering Materials, EarlyView.
Adaptive foam 3D printing, enabled by expandable microspheres, imparts cellular structures to thermoplastic and thermosetting polymers, manufactured through a variety of processes including fused filament fabrication, direct ink writing, digital light processing, and inkjet printing.
Nariman Rajabifar, Amir Ameli
wiley   +1 more source

A theory of E B staircase stability: favorable role of fast ions

open access: yesNuclear Fusion
We present an analytic theory for the E $\times$ B staircase stability against intrinsic collapse with a bump-hole pair growth. The obtained scale-dependent critical E $\times$ B shearing rate required to sustain the staircase indicates that finer-scale ...
G.J. Choi, M.A. Torio, T.S. Hahm
doaj   +1 more source

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