The standing quasi-modes of the ideal magnetohydrodynamics (MHD) in a zero-β cylindrical magnetic flux tube that undergoes a longitudinal density stratification and radial density structuring are considered. The radial structuring is assumed to be a linearly varying density profile. Using the relevant connection formulae of the resonant absorption, the dispersion relation for the fast MHD body ...

We have measured the branching fractions for the exclusive decay modes B → χc1(2)K(K ∗) using a 140 fb data sample collected by the Belle detector at the KEKB asymmetric-energy e+e− collider. The measured branching fractions for B+ → χc1K, B0 → χc1K, B0 → χc1K and B+ → χc1K decay modes are (4.5 ± 0.2 ± 0.5) × 10−4, (3.5 ± 0.3 ± 0.5) × 10−4, (3.1 ± 0.3 ± 0.7) × 10−4 and (4.1 ± 0.6 ± 0.9) × 10−4,...

Highly textured lead lanthanum titanate (Pb1−xLax)TiO3 (PLT) thin films have been grown on fused quartz substrates by metalorganic chemical deposition (MOCVD). A series of PLT with different x between 0 and 0.32 were prepared and studied by Raman scattering. Raman spectra, measured at 300 K and 80 K, showed the features from the PLT film and quartz substrate. By using a “difference Raman” techn...

The K-modes clustering algorithm is well known for its efficiency in clustering large categorical datasets. The K-modes algorithm requires random selection of initial cluster centers (modes) as seed, which leads to the problem that the clustering results are often dependent on the choice of initial cluster centers and non-repeatable cluster structures may be obtained. In this paper, we propose ...

The potassium channel from Streptomyces lividans (KcsA) is an integral membrane protein with sequence similarity to all known potassium channels, particularly in the selectivity filter region. A recently proposed model for ion channels containing either n or (n-1) single-file ions in their selectivity filters [P. H. Nelson, J. Chem. Phys. 177, 11396 (2002)] is applied to published KcsA channel ...

Classical equilibrium molecular dynamics simulations have been performed to investigate dynamical properties of cage radial breathing modes and intra- and inter-cage hydrogen migration in both pure hydrogen and mixed hydrogen-tetrahydrofuran sII hydrates at 0.05 kbar and up to 250 K. For the mixed H(2)-THF system in which there is single H(2) occupation of the small cage (labelled "1SC 1LC"), w...