Results 21 to 30 of about 2,271,409 (257)

Modelling of impurity transport experiments at the Joint European Torus [PDF]

, 2010
Impurity transport in JET is studied using interpretative analysis and predictive simulations of JET discharges. The simulations are based on transport models for Ion-Temperature- Gradient (ITG) mode and Trapped-Electron (TE) mode driven turbulence and ...
Strand P, Parail V, Tala T, Belo P, Naulin V, Valisa M, Corrigan G, Nordman H, Jenko F, Giroud C, Merz F, Skyman A   +11 more
core   +1 more source

Stability of divertor detachment

Nuclear Materials and Energy, 2017
The 2D simulations of edge plasma transport show that unlike some earlier publications, the impurity radiation loss per se does not cause the bifurcation-like transition to detached divertor regime.
S.I. Krasheninnikov, A.S. Kukushkin, A.A. Pshenov, A.I. Smolyakov, Yanzeng Zhang   +4 more
doaj   +1 more source

Parametric dependences of impurity transport in tokamaks

, 2006
Impurity accumulation has been observed in many tokamak plasma experiments and predicted by collisional transport theory. However in most experimental cases observed transport departs from the collisional predictions ('anomalous transport'), admittedly ...
C Giroud, M E Puiatti, X Garbet, L Carraro, R Guirlet, N Dubuit, T Parisot, C Bourdelle, P R Thomas   +8 more
core   +1 more source

Preliminary Result of Neoclassical Impurity Transport Affected by ICRH with a 4-D Fokker-Planck Code [PDF]

EPJ Web of Conferences
To understand the role of ion cyclotron resonance heating (ICRH) in mitigating tungsten accumulation, we evaluate the impact of ICRH-induced poloidal asymmetries on neoclassical impurity transport using a newly developed 4-D Fokker–Planck code (FP4D ...
Jeong Yunho, Lee Hyeonjun, Bertelli Nicola, Yoon Eisung, Lee Jungpyo   +4 more
doaj   +1 more source

Low Z impurity transport in tokamaks. [Neoclassical transport theory]

, 1978
Low Z impurity transport in tokamaks was simulated with a one-dimensional impurity transport model including both neoclassical and anomalous transport. The neoclassical fluxes are due to collisions between the background plasma and impurity ions as well ...
S.P. Hirshman, Hawryluk, R.J., Suckewer, S., S. Suckewer, Hirshman, S.P., R.J. Hawryluk   +5 more
core   +1 more source

Change of the Tungsten neoclassical particle transport characteristic due to the coexisting of the lower-Z impurity in the tokamak plasmas

Nuclear Fusion
The high- Z impurity Tungsten neoclassical particle transport in the tokamak plasmas with the coexisting of the lower- Z impurity is investigated. The lower- Z impurity could reduce or enhance the Tungsten neoclassical particle transport.
Chengkang Pan
doaj   +1 more source

Impurity transport caused by blob and hole propagations [PDF]

, 2017
0000-0001-7641-6908It is for the first time demonstrated by means of the three-dimensional electrostatic particle-in-cell simulation that the impurity ion transport caused by blob and hole propagations might not be negligible as compared with other types
Seiji Ishiguro, Hiroki Hasegawa, HASEGAWA, Hiroki, ISHIGURO, Seiji   +3 more
core   +1 more source

Functional comparison of EncB and EncC cargo proteins in iron storage within the Myxococcus xanthus encapsulin

FEBS Letters, EarlyView.
Encapsulins are protein nanocompartments that play an important role in iron storage. In the Myxococcus xanthus encapsulin system, two cargo proteins called EncB and EncC contribute to iron mineralization. Here, we show that EncB and EncC generate iron‐containing minerals with distinct chemical compositions, suggesting that the composition of stored ...
Harry B. McDowell, Thomas Walther, Egbert Hoiczyk   +2 more
wiley   +1 more source

Turbulent impurity transport in tokamaks [PDF]

, 2013
Nuclear fusion is foreseen as one of the options for future energy production. One of the remaining scientific challenges for establishing the physics basis of future magnetic fusion reactors is to find scenarios where the impurity content in the core ...
Moll\ue9n, Albert, Mollén, Albert
core  

The Shewanella oneidensis Fic enzyme SoFic targets the switch‐I region of EF‐Tu for AMPylation

FEBS Letters, EarlyView.
Fic enzymes mediate diverse post‐translational modifications across all domains of life, including AMPylation. Prokaryotic EF‐Tu can be AMPylated and deAMPylated by the conserved Fic enzyme SoFic. Structural and biochemical approaches were used to characterize the effect of AMPylation on EF‐Tu, SoFic's enzymatic activities, and the enzyme‐target ...
Svenja Runge, Vivian Pogenberg, Alexander Baumgart, Bente Siebels, Hartmut Schlüter, Michael Hecht‐Bucher, Aymelt Itzen   +6 more
wiley   +1 more source