Changes in morphology, crystallinity, and surface chemistry of the hot-pressed carbon paper were investigated. More junctions between fibers were formed with increasing hot-press time, which is attributed to melting and bonding of fibers. The bulk density increased to 0.50.6 g/cm3, which could help to improve the volume energy density for electrode applications. The conductivity of the carbon paper was found to be about 40 S/cm when the surface area was similar to 2 m2/g, and depends not only on the conductivity

of the individual nanofibers but also on the contacts between the nanofibers. The performance of the electrospun carbon paper as an electrode for electrochemical reactions involving ferrocene molecules was

affected by the preparation protocol: the higher surface area of the electrodes formed with shorter hot-press times provided a higher current generated per unit mass than that obtained with electrodes prepared using longer selleck chemicals hot-press time, but electrodes prepared with longer hot-press times exhibited higher electrical conductivity and faster electron Poziotinib in vivo transfer kinetics. (C) 2011 Wiley Periodicals, Inc. J Appl Polym Sci, 2012″
“The distribution of the collateral damage beneath craters produced by ultrafast (femtosecond) laser single pulses in a nickel base superalloy single crystal has been analyzed using electron backscatter diffraction. The procedure is based on measurements of the localized crystal rotations caused by the dislocations generated by the shock wave that is produced as an check details effect of laser pulse interaction with a material. Damage in

the form of lattice misorientation created by excess dislocations was negligible at laser fluences up to 2 J/cm(2). At higher fluences (5.1-41 J/cm(2)), the depth of the damage zone beneath the crater increased linearly with laser fluence. Based on lattice misorientation, excess dislocation densities as high as 3 x 10(10)/cm(2) are calculated to be present below the ablated surface in the high fluence regime. (C) 2011 American Institute of Physics. [doi:10.1063/1.3653839]“
“We tested to determine if Corni fructus extract has antioxidant activities and explored its potential mechanism in terms of iNOS and COX-II involvement. Anti-oxidative actions were explored by measuring free radical (NO, DPPH) scavenging activity, and TBARS levels. The mechanism of anti-oxidative action of Corni fructus extract was determined by performing Western blot analysis for iNOS and COX-II expression in lipopolysaccharide (LPS) stimulated Raw cells. 70% methanolic extract of Corni fructus exerted significant DPPH free radical scavenging activity in a dose-dependent manner. The DPPH-free radical scavenging activity was stronger than that of vitamin E. It also markedly inhibited TBARS formation. Strikingly, the Corni fructus extract has dramatic reducing power with maximal activity observed as 231-fold over control.