The Trp RNA-binding protein (TRAP) has a toroidal topology and a perfect 11-fold symmetry, which makes it an excellent candidate for a vibrational study of elastic properties. Normal mode analysis in combination with correlation matrix calculations was used to detect collective low-frequency motions in TRAP. The results reveal the presence of highly correlated modes at the lower end of the spec...

We report recent results from global gyrokinetic particle simulations of the collisionless trapped electron mode (CTEM) turbulence, turbulent momentum transport, and turbulent transport in the reverse shear toroidal plasmas. The study of CTEM turbulence shows that the presence of mesoscale structures drives a nondiffusive component in the electron heat flux due to the weak nonlinear detuning of...

the vertex arboricity $rho(g)$ of a graph $g$ is the minimum number of subsets into which the vertex set $v(g)$ can be partitioned so that each subset induces an acyclic graph‎. ‎a graph $g$ is called list vertex $k$-arborable if for any set $l(v)$ of cardinality at least $k$ at each vertex $v$ of $g$‎, ‎one can choose a color for each $v$ from its list $l(v)$ so that the subgraph induced by ev...

This paper summarizes highlights of research results from the Alcator C-Mod tokamak covering the period 2006 through 2008. Active flow drive, using mode converted waves in the ion cyclotron range of frequencies (ICRF), has been observed for the first time in a tokamak plasma, using a mix of D and 3He ion species; toroidal and poloidal flows are driven near the location of the mode conversion la...

The linear resistive magnetohydrodynamical stability of the n= 1 internal kink mode in tokamaks is studied numerically. The stabilizing influence of small aspect ratio [Holmes et al., Phys. Fluids B 1, 788 (1989)] is confirmed, but it is found that shaping of the cross section influences the internal kink mode significantly. For finite pressure and small resistivity, curvature effects at the q=...

Abstract A transition from an interchange mode to a non-resonant is found in the nonlinear magnetohydrodynamic simulation for partial collapse large helical device (LHD) plasma with net toroidal current. This can occur when magnetic shear weak and rotational transform close unity core region. In this transition, number of dominant Fourier component reduced. As result evolution, ( m , n ) = (1, ...

It was found recently with the use of the ballooning formalism that the toroidal asymmetry of the stellarator magnetic configuration can significantly change the structure of Torodicity-induced Alfvén Eigenmodes (TAE) with high toroidal mode numbers (n), producing singular (stepwise) wave functions [Yakovenko, Yu.V., et al., Energetic Particles in Magnetic Confinement Systems (Proc. 10th IAEA T...