Patterns in molecular topology and complexity for long-chain branching are quantitatively described. The Wiener number, the topological complexity index, and a new index of 3-starness are used to quantify polymer structure. General formulas for these indices were derived for the cases of 3-arm star, H-shaped, and B-arm comb polymers. The factors affecting complexity in monodisperse polymer syst...

Long-chain 1,2-diols constitute the hydrophobic backbone of membrane lipids (replacing glycerolipids) in the thermophilic eubacterium Thermomicrobium roseum. The effects of incubation temperature on chain length and chain branching of diols and fatty acids were investigated. The percentage of branched chains decreased, and chain length increased slightly, with increased growth temperatures.

how to cite this article: taghdiri mm. adreno leukodystrophy. iran j child neurol. autumn 2014;8;4(suppl.1):13. pls see pdf.

Spatially homogeneous thermal explosions governed by a three-step chain-branching kinetic model are described in the asymptotic limit of large activation energy for a range of chain-branching cross-over temperatures. The model consists of a sequence of chain-initiation, chain-branching and chain-termination steps. Temperaturesensitive Arrhenius kinetics is employed for the initiation and branch...