Results 21 to 30 of about 2,926 (263)

Computations of Intermittent Transport in Scrape-Off Layer Plasmas [PDF]

Physical Review Letters, 2004
Two-dimensional fluid simulations of interchange turbulence for geometry and parameters relevant for the scrape-off layer of magnetized plasmas are presented. The computations, which have distinct plasma production and loss regions, reveal bursty ejection of particles and heat from the bulk plasma in the form of blobs.
O E, Garcia, V, Naulin, A H, Nielsen, J Juul, Rasmussen   +3 more
openaire   +2 more sources

Divertor erosion at ASDEX Upgrade during helium plasma operations

Nuclear Materials and Energy
The effect of helium plasma operation on the erosion of plasma-facing components at the low-field side divertor of ASDEX Upgrade was investigated during the 2022 helium experimental campaign. A set of tungsten-covered graphite samples with small platinum
Tomi Vuoriheimo, Antti Hakola, Jari Likonen, Karl Krieger, Martin Balden, Iva Bogdanović Radović, Georgios Provatas, Zdravko Siketić, Karla Ivanković Nizić, Marcin Rasinski, Sebastijan Brezinsek   +10 more
doaj   +1 more source

Detachment scalings derived from 1D scrape-off-layer simulations

Nuclear Materials and Energy
Fusion power plants will require detachment to mitigate sputtering and keep divertor heat fluxes at tolerable levels. Controlling detachment on these devices may require the use of real-time scrape-off-layer modeling to complement the limited set of ...
Thomas Body, Thomas Eich, Adam Kuang, Tom Looby, Mike Kryjak, Ben Dudson, Matthew Reinke   +6 more
doaj   +1 more source

Kinetic simulations of electron heat flux in the scrape-off layer

Nuclear Materials and Energy, 2017
Parallel electron heat flux qe|| on open field lines is studied with the 1D2V kinetic Vlasov-Fokker-Planck (VFP) code KIPP [15–17]. In order to assess the importance of kinetic effects on the scrape-off layer heat transport in a systematic way, a series ...
M. Zhao, A.V. Chankin, D.P. Coster
doaj   +1 more source

Blob stability and transport in the scrape-off-layer [PDF]

Physics of Plasmas, 2003
High-density plasma filaments extended along the magnetic field, which look like “blobs” in the plane perpendicular to B, have been observed in the scrape-off-layer (SOL) of many plasma devices. These objects become polarized and subsequently E×B drift to the wall carrying a significant flux of particles.
D. A. D’Ippolito, J. R. Myra
openaire   +1 more source

Effect of local wall clearance on scrape-off layer electron density profiles in ASDEX Upgrade

Nuclear Fusion
The plasma electron density is measured with multiple diagnostics in the scrape-off layer of the ASDEX Upgrade tokamak. The recorded values are typically in good agreement in the case of exponentially decaying profiles at low densities, but they become ...
B. Tal, E. Wolfrum, M. Bernert, G. Birkenmeier, D. Brida, R. Fischer, G. Grenfell, M. Griener, O. Grover, J. Hobirk, B. Kurzan, T. Lunt, P.A. Schneider, N. Vianello, D. Wendler, the ASDEX Upgrade Team, the EUROfusion Tokamak Exploitation Team   +16 more
doaj   +1 more source

Hyperosmotic stress induces PARP1‐mediated HPF1‐dependent mono(ADP‐ribosyl)ation

FEBS Letters, EarlyView.
Sorbitol‐induced hyperosmotic stress rapidly induces reversible mono(ADP‐ribosyl)ation (MARylation) on PARP1 without the signs of genotoxic signaling. We show that PARP1 autoMARylation is HPF1 dependent and forms hydroxylamine‐resistant O‐glycosidic linkages.
Anna Georgina Kopasz, Mihály Mérey, Rebeka Vásárhelyi, Ramóna Pék, Victor Imburchia, László Henn, Adrián Kószó, Nicholas D. Lakin, Ivan Ahel, Sébastien Huet, Ágnes Czibula, Gyula Timinszky   +11 more
wiley   +1 more source

COMP–PMEPA1 axis promotes epithelial‐to‐mesenchymal transition in breast cancer cells

Molecular Oncology, EarlyView.
This study reveals that cartilage oligomeric matrix protein (COMP) promotes epithelial‐to‐mesenchymal transition (EMT) in breast cancer. We identify PMEPA1 (protein TMEPAI) as a novel COMP‐binding partner that mediates EMT via binding to the TSP domains of COMP, establishing the COMP–PMEPA1 axis as a key EMT driver in breast cancer.
Konstantinos S. Papadakos, Gilar Gorji‐bahri, Lejla Gradjan, Julia Zajac, Kacper Gil, Yvonne Thokozile Nduku, Anna M. Blom   +6 more
wiley   +1 more source

Numerical analysis of the impact of an RF sheath on the Scrape-Off Layer in 2D and 3D turbulence simulations

Nuclear Materials and Energy, 2017
Motivated by Radio Frequency (RF) heating studies, the response of the plasma of tokamaks to the presence of a locally polarized limiter is studied. In a first part, we use the TOKAM3X3D global edge turbulence code to analyse the impact of such biasing ...
P. Tamain, C. Colin, L. Colas, C. Baudoin, G. Ciraolo, R. Futtersack, D. Galassi, Ph Ghendrih, N. Nace, F. Schwander, E. Serre   +10 more
doaj   +1 more source

Keratin 19 as a prognostic marker and contributing factor of metastasis and chemoresistance in high‐grade serous ovarian cancer

Molecular Oncology, EarlyView.
Keratin 19 (KRT19) is overexpressed in high‐grade serous ovarian cancer with high levels of Kallikrein‐related peptidases (KLK) 4–7 and is associated with poor survival. In vivo analyses demonstrate that elevated KRT19 increases peritoneal tumour burden.
Sophia Bielesch, Isabel Vogel, Sina Nokodian, Johanna Moeller, Antonia Blechschmidt, Vicky Hecht, Vanessa Kuentzel, Katharina Thiedig, Melissa Schwab, Oliver Schilling, Holger Bronger, Marion Kiechle, Viktor Magdolen, Tobias Dreyer   +13 more
wiley   +1 more source