The Internet needs more capacity, or bandwidth, both in its main backbone and in its connections to schools, houses and offices.
A "grafting onto" approach based on two different controlled ring-opening polymerization (ROP) techniques is developed to synthesize polytyrosine-graft-poly 2-ethyl-2-oxazoline) (polytyrosine-graft-poly 2-ethyl-2-oxazolineng polytyrosine-graft-poly 2-ethyl-2-oxazoline
It was shown that a combination of a high volume fraction, high torsion barriers around the single bonds in the main backbone and high specific electrostatic interactions due to the presence of the Si-atom are all necessary for high diffusion coefficients of gases through PTMSP membranes.
Owing to the presence of pendent hydrophiphilic PEtOx block, PTyr-g-PEtOx GCC exhibits LCST-type reversible phase transition behavior in water, which is tunable with respect to its concentration and the lengths of the main backbone and the pendent block.
A new copolymer, poly[(4,4′-dioctyldithieno[3,2-b 2′,3′-d]silole-2,6-diyl -alt-{4,7-bis[2- 3-hexyl thienyl]-2,1,3-benzothiadiazole-5,5′-diyl}] (PDTSDTBT) was designed by introducing a thiophene spacer bearing a hexyl chain at β-position in the main backbone and compared to its analog poly[(4,4′-dioctyldithieno[3,2-b 2′,3′-d]silole-2,6-diyl -alt-{4,7-bis[2- 3-hexyl thienyl]-2,1,3-benzothiadiazole-5,5′-diyl}
We can note that during this decade the Internet access started to become more democratic in Brazil, when all regions of the country became covered by the main backbone and also due to the development of the commercial Internet.
This pattern was indicative of an edge-on orientation, in which the P3HT main backbones and the hexyl side chains were parallel with and perpendicular to the substrate, respectively.
In the SAED patterns of Fig. 1b, two pairs of (100) prisms in the a-axis or the hexyl side chains direction and two pairs of (020) prisms in the b-axis or the π π stacking direction demonstrated a flat-on orientation for the P3HT chains, in which the main backbones and the hexyl side chains were perpendicular and parallel to the substrate, respectively.
Main backbone of chain A and chain B for both ground- and space-grown crystal was superimposed giving root mean square deviation (RMSD) value of 0.2185 Å for chain A and 0.4214 Å for chain B, respectively.
It uses subject-domain ontology as the main backbone for service adaptation and content management.
Wildlife and scenic attractions are reported to be the main backbone of the tourist industry and the industry is estimated to be 95% nature based (Campbell and Brigham 1993).
