The ruthenium-containing sensitizing dye N719 grafted on TiO2 nanoparticles was investigated by solid-state NMR. The carbon resonances are assigned by means of (13)C cross-polarized dipolar dephasing experiments. DFT calculations of the carbon magnetic shielding tensors accurately describe the changes in chemical shifts observed upon grafting onto a titania surface via one or two carboxylic fun...

A new approach to the interpretation of residual dipolar couplings for the regular secondary structures of proteins is presented. This paper deals with the analysis of the steric and chiral requirements of protein secondary structures and establishes a quantitative correlation between structure periodicity and the experimental values of the backbone residual dipolar couplings. Building on the r...

Experimental and simulation results of solvation dynamics in ionic liquids have so far been explained in terms of translational motion of the ions constituting the ionic liquids under investigation. A recent theoretical study [Kashyap & Biswas, J Phys Chem B, 114 (2010) 254] has indicated that while translational motion of the constituent ions is indeed responsible for Stokes’ shift dynamics of...

The title compound, C(13)H(13)N, is an N-alkyl-ated derivative of aniline. The N atom is present in a nearly planar mol-ecular geometry (angles sums at the N atom are 358 and 359° in the two molecules of the asymmetric unit). The planes defined by the aromatic rings intersect at angles of 80.76 (4) and 81.40 (4)° in the two molecules. In the crystal, N-H⋯Cg inter-actions connect the two mol-ecu...

For the development of a scheme for quantitative experimental estimation of internal motion in the complex human milk hexasaccharide lacto-N-di-fuco hexose I (LNDFH I), we measured a large number of experimental residual dipolar couplings in liquid crystal orienting media. We present a total of 40 (13)C--(1)H and (1)H--(1)H dipolar coupling values, each representing distinct directions of inter...

Abstract This study uses linear regression and composite analyses to identify a pronounced asymmetric connection of sea surface temperature (SST) in the Tasman Sea with two opposite phases El Niño-Southern Oscillation (ENSO) during austral summer. In Niño years, SST anomalies (SSTAs) exhibit dipolar pattern weak warmth northwest modest cooling southeast, while La Niña years SSTAs basin-scale gr...

A heteronuclear dipolar recoupling scheme applicable to I-S spin pairs undergoing magic-angle-spinning (MAS) is introduced, based on the overtone irradiation of one of the coupled nuclei. It is shown that when I is a quadrupole, for instance (14)N, irradiating this spin at a multiple of its Larmor frequency prevents the formation of MAS dipolar echoes. The ensuing S-spin signal dephasing is sig...

This paper gives the results of a simulation study on the performance of JPEG image transmission over AWGN and Rayleigh fading channels using typical and proposed asymmetric turbo codes for error control coding. The baseline JPEG algorithm is used to compress a QCIF (176×144) “Suzie” image. The recursive systematic convolutional (RSC) encoder with generator polynomials (1,D +D +1/D +D+1), that ...

Hard-ligand, high-potential copper sites have been characterized in double mutants of Pseudomonas aeruginosa azurin (C112D/M121X (X = L, F, I)). These sites feature a small A(zz)(Cu) splitting in the EPR spectrum together with enhanced electron transfer activity. Due to these unique properties, these constructs have been called "type zero" copper sites. In contrast, the single mutant, C112D, ...