We argue that the giant graviton configurations known from the literature have a complementary, microscopical description in terms of multiple gravitational waves undergoing a dielectric (or magnetic moment) effect. We present a non-Abelian effective action for these gravitational waves with dielectric couplings and show that stable dielectric solutions exist. These solutions agree in the large...

In the presence of very low concentrations (about 2X10(-7) M) of cytochalasin B (CB) the time course of actin polymerization is much more sigmoidal when followed by viscosity measurements than when followed by light scattering measurements. This suggests that under these conditions actin polymers do not immediately reach their final length but only via short "bent" polymers which can be detecte...

BACKGROUND RAF kinases direct ERK MAPK signaling to distinct subcellular compartments in response to growth factor stimulation. METHODOLOGY/PRINCIPAL FINDINGS Of the three mammalian isoforms A-RAF is special in that one of its two lipid binding domains mediates a unique pattern of membrane localization. Specific membrane binding is retained by an N-terminal fragment (AR149) that corresponds t...

It is demonstrated that the nature of Z-group trithiocarbonate RAFT agents can have a major effect on nucleation step aqueous PISA performed as emulsion polymerization.

Bulk quantities of polypyrrole nanofibers and nanospheres can be synthesized with a facile, one-step "green-nano" chemical oxidative polymerization approach, by simply using different reaction media.

Every addition polymerization process involves two fundamental steps: initiation and propagation. Termination is also an important step but in some processes termination may be avoided by a judicious choice of experimental conditions. In the exploration of either new methods of polymerization or the development of existing methods attention may be concentrated on either the initiation process o...

A series of fluorine-containing amphiphilic graft copolymers consisting of a semi-fluorinated poly(2methyl-1,4-bistrifluorovinyloxybenzene) (PMBTFVB) backbone and hydrophilic poly(acrylic acid) (PAA) side chains was synthesized by the combination of thermal cycloaddition polymerization and atom transfer radical polymerization (ATRP) through the grafting-from strategy. 2-Methyl-1,4-bistrifluorov...

Polymer nanoparticles with a nonspherical shape are difficult to access and rare. Heterophase Suzuki–Miyaura polycondensation can yield distinct ellipsoidal poly(9,9′-dioctylfluorene) nanoparticles. We reveal the origin of this unusual particle by combination experimental approaches. Given sufficient chain mobility, enabled choice suitable organic solvent, also prefabricated oligomers DPn ≥ ca....

Abstract The synthesis of high‐value fuels and plastics starting from small hydrocarbon molecules plays a central role in the current transition towards renewable energy. However, detailed mechanisms driving growth chains remain to large extent unknown. Here we investigated formation resulting acetylene polymerization on Ni(111) model catalyst surface. Exploiting X‐ray photoelectron spectroscop...