Preliminary optical characterization showed that these nanocrystalline materials can be potentially used as optical amplifiers and in applications like infrared imaging, security and authentication. (C) 2009 American Institute of Physics. [doi:10.1063/1.3168442]“
“Electron microscopic observation revealed that lupeol induced melanosome maturation in B16 ACY-241 2F2 mouse melanoma cells and we therefore studied the effects of lupeol on the intracellular events responsible for melanosome transport. Incubation

with lupeol for 8 h attenuated the actin stress fiber assembly in B16 2F2 mouse melanoma cells, resulting in dendritic formation in the cells. Longer exposure to lupeol (48 h) increased the expression of tyrosinase, MITF (a specific transcription factor for tyrosinase), Rab27a, and myosin-Va, which are required for melanosome transport.”
“Six-fold configurational anisotropy was studied in Permalloy triangles, in which the shape symmetry order yields two energetically non-degenerate micromagnetic configurations Poziotinib of the spins, the so-called Y and “”buckle”" states. A12-pointed switching astroid was measured using magneto-optical experiments and well reproduced numerically. Switching fields in different polar sectors were shown to reflect the different possible energy paths dictated by the configurational anisotropy during a 180

reversal of the magnetization, thereby giving a comprehensive view of the switching mechanism in these structures. A detailed analysis moreover highlighted the necessity to include the physical rounding of the structures in the simulations to account for the instability of the Y state. (C) 2009 American Institute of Physics. [doi: 10.1063/1.3223311]“
“The chemical constituents of the traditional

Tibetan medicine of Saussurea medusa Maxim. (Compositae) were investigated and a new flavonoid glucoside, together with 14 known compounds, was isolated. The structure of the new compound was established as 6aEuro(3)-O-crotonoylhomoplantaginin by using one- and two-dimensional www.selleckchem.com/products/napabucasin.html nuclear magnetic resonance spectroscopy and mass spectrometry analyses.”
“We have investigated the effect of HfO2 layer thickness on crystallization in thin HfO2 films using photoemission spectroscopy and x-ray absorption spectroscopy (XAS). O K-edge XAS spectra depending on annealing temperature indicate that crystallization in thin HfO2 films is suppressed upon annealing for thin HfO2 film, which in turn has a beneficial effect on the performance of devices. The annealing-temperature dependence of the depth profile of HfO2 films suggests that diffusion of Si atoms into the HfO2 layer plays only a minor role in the suppression of crystallization, indicating that HfO2 films can restrain a decrease in dielectric constant. (C) 2009 American Institute of Physics. [doi:10.1063/1.