monary artery caused by erosion into the artery by an adjacent tuberculous cavity (1, 2). Pseudoaneurysm were present in 4% of autopsies of patients who died of chronic cavitary tuberculosis (3). A conventional contrast enhanced CT may suggests pseudoaneurysm that shows enhancing mass with an adjacent vessel (4, 5). Helical CT can show vascular imaging more than conventional contrast enhanced C...

The optimal positioning of salt-bridging interactions in a parallel alpha-helical homotrimeric coiled coil has been explored in a metal ion-assembled polypeptide trimer of 60 residues; arginine-glutamate pairs are more stabilizing than the corresponding lysine-glutamate pairs, and optimal stabilization is obtained with positively charged arginine residues at the c positions of the alpha-helical...

We elucidate the structural transitions in a helical off-lattice homopolymer induced by crowding agents, as a function of the number of monomers (N) and volume fraction (varphi c) of crowding particles. At varphic=0, the homopolymer undergoes transitions from a random coil to a helix, helical hairpin HH, and helix bundle HB structures depending on N, and temperature. Crowding induces chain comp...

We present the results of a combined experimental and theoretical investigation of the capillary instability of an elastic helical thread bound within a fluid. The influence of the thread's elastic energy on the classic Rayleigh-Plateau instability is elucidated. The most unstable wavelength can be substantially increased by the influence of the helical coil. The relation between our system and...

Nine embolization experiments of a silicone aneurysm model were conducted by using helical and complex-shaped coils. Coils were introduced up to the point when the adjunct of a supplementary coil caused protrusion into the parent vessel. Packing ratios (volume of coils-aneurysm volume) ranged between 31% and 38%. Optimal packing was achieved with complex-shaped coils used in a concentric fashio...

1Research Scholar, Industrial & Production Engineering Department, Shri G.S. Institute of Technology & Science, 23 Park Road, Indore, M.P., India 2Assistant Professor, Industrial & Production Engineering Department, Shri G.S. Institute of Technology & Science, 23 Park Road, Indore, M.P., India ---------------------------------------------------------------------***------------------------------...

Phosphorylation of the regulatory (R) domain initiates cystic fibrosis transmembrane conductance regulator (CFTR) Cl(-) channel activity. To discover how the function of this domain is determined by its structure, we produced an R domain protein (R8) that spanned residues 708-831 of CFTR. Phosphorylated, but not unphosphorylated, R8 stimulated activity of CFTR channels lacking this domain, indi...