Results 71 to 80 of about 41,540 (235)

Effect of toroidal rotation on impurity transport in tokamak improved confinement

Nuclear Fusion
The centrifugal force effects from toroidal rotation in improved confinement plasmas are analyzed on high- Z impurities in tokamaks. Tungsten (W) transport simulations are performed using the impurity transport code developed in the integrated code TASK.
Shota Mochinaga, Naohiro Kasuya, Atsushi Fukuyama, Masatoshi Yagi   +3 more
doaj   +1 more source

Moment-equation methods for calculating neoclassical transport coefficients in general toroidal plasmas [PDF]

, 2008
A detailed comparison is made between moment-equation methods presented by H. Sugama and S. Nishimura [Phys. Plasmas 9, 4637 (2002)] and by M. Taguchi [Phys. Fluids B 4, 3638 (1992)] for calculating neoclassical transport coefficients in general toroidal
H. Sugama, Hamada, Hastings, Hirshman, Nishimura, S. Nishimura, Sugama   +6 more
core   +2 more sources

ORCHESTRATING DIFFERENCE AND SIMILARITY: Black Fungibility, and the Spatial Redrawing of Racial Categories in Spanish Colonial Morocco, Sahara and Guinea

International Journal of Urban and Regional Research, EarlyView.
Abstract In this article I dissect the spatial strategies through which the Spanish attempted to orchestrate both racial difference and similarity in the African colonies of Morocco, Western Sahara and Equatorial Guinea during the first half of the twentieth century.
Pol Fité Matamoros
wiley   +1 more source

Controlling impurity transport in 5D gyrokinetic simulations using a transport barrier

Nuclear Fusion
The effects of transport barriers on impurity transport, specifically helium (He) and tungsten (W), are investigated using the global, flux-driven, full-F, 5D gyrokinetic code GYSELA.
G. Lo-Cascio, E. Gravier, M. Lesur, T. Réveillé, Y. Sarazin, X. Garbet, K. Lim, T. Rouyer, A. Guillevic   +8 more
doaj   +1 more source

Modeling of toroidal momentum transport induced by neoclassical toroidal viscosity torque for ITER scenarios

Nuclear Fusion, 2023
Neoclassical toroidal viscosity (NTV) torque caused by resonant magnetic perturbation (RMP) and the induced toroidal momentum transport are investigated for International Thermonuclear Experimental Reactor (ITER) scenarios through numerical modeling. The
X.-T. Yan, Y.-W. Sun, L. Li, Y.-Q. Liu, N.-N. Bao, A. Loarte, S. Pinches, B.-N. Wan   +7 more
doaj   +1 more source

Benchmark Test of Drift-kinetic and Gyrokinetic Codes through Neoclassical Transport Simulations [PDF]

, 2009
Two simulation codes that solve the drift-kinetic or gyrokinetic equation in toroidal plasmas are benchmarked by comparing the simulation results of neoclassical transport.
H. Sugama, S. Satake, T.-H. Watanabe, Y. Idomura   +3 more
core  

Relativistic neoclassical radial fluxes in the 1/nu regime

, 2013
The radial neoclassical fluxes of electrons in the 1/nu regime are calculated with relativistic effects taken into account and compared with those in the non-relativistic approach.
Azarenkov, N. A., Marushchenko, I., Marushchenko, N. B.   +2 more
core   +1 more source

Synthetic biology approaches to generate temperature‐sensitive alleles for the Sterile Insect Technique

Insect Science, EarlyView.
Abstract The Sterile Insect Technique (SIT) is an environmentally friendly, sustainable pest control approach, which uses large‐scale releases of sterile insects to suppress or eradicate target populations through infertile matings. The efficiency of SIT is enhanced by male‐only releases requiring genetic sexing strains (GSSs) that are classically ...
Chun Yin Leung, Ernst A. Wimmer, Hassan M. M. Ahmed   +2 more
wiley   +1 more source

CRISPR/Cas9‐based white pupae mutant lines in Bactrocera spp. for sterile insect technique applications

Insect Science, EarlyView.
Bactrocera fruit flies are significant horticultural pests that cause major economic losses. A “neoclassical approach” incorporating genome editing via CRISPR/Cas9 to develop genetic sexing strains (GSS) could render the sterile insect technique (SIT) against these pests more efficient and cost‐effective.
Chrysanthi Ioannidou, Maria‐Eleni Gregoriou, Marc F. Schetelig, Elena Drosopoulou, Kostas D. Mathiopoulos, Kostas Bourtzis   +5 more
wiley   +1 more source

Reduction of neoclassical bulk-ion transport to avoid helium-ash retention in stellarator reactors

Nuclear Fusion
The reduction of neoclassical energy transport in stellarators has traditionally focussed on optimizing magnetic fields for small values of ‘effective helical ripple’ — $\epsilon_\mathrm{eff}$ , the geometric factor associated with electron $1/\nu ...
C.D. Beidler, M. Drevlak, J. Geiger, P. Helander, H.M. Smith, Y. Turkin   +5 more
doaj   +1 more source