8 nm. Raman analysis showed a strong peak at 136 cm(-1). Due to the nanocrystalline nature, the threshold
field (5.5 V/mu m) and approximate work function values were high, making the films a very efficient field emitter. (C) 2011 LEE011 solubility dmso American Institute of Physics. [doi:10.1063/1.3585864]“
“The hypolipidemic activity of Symplocos cochinchinensis S. Moore leaves was studied in Triton WR-1339- and high fat diet-induced hyperlipidemic rats. In Triton WR-1339-induced hyperlipidemic rats, the hexane extract (250 and 500 mg/kg) exerted a significant (P < 0.01) lipid-lowering effect compared to ethyl acetate and methanol extracts, as assessed by the reversal of the plasma levels of total cholesterol (TC), triglycerides (TG), high-density lipoprotein cholesterol (HDL-C), and low-density lipoprotein cholesterol (LDL-C). In high fat diet-fed hyperlipidemic rats, the hexane extract (250 and 500 mg/kg) caused the lowering of lipid levels in the plasma and liver. The hypolipidemic activity of S. cochinchinensis leaves was compared with fenofibrate, a known lipid-lowering drug, in both models.”
with negative drug discovery dynamic mass density have been shown to demonstrate a five-fold increase in transmission loss (TL) over mass law predictions for a narrowband (100 Hz) at low frequencies (100-1000 Hz). The present work focuses on the scale-up of this effect by examining the behavior of multiple elements arranged in arrays. Single membranes were stretched over rigid frame supports and masses were attached to the center of each divided cell. The TL behavior
查看更多 was measured for multiple configurations with different magnitudes of mass distributed across each of the cell membranes in the array resulting in a multipeak TL profile. To better understand scale-up issues, the effect of the frame structure compliance was evaluated, and more compliant frames resulted in a reduction in the TL peak frequency bandwidth. In addition, displacement measurements of frames and membranes were performed using a laser vibrometer. Finally, the measured TL of the multi-celled structure was compared with the TL behavior predicted by finite element analysis to understand the role of nonuniform mass distribution and frame compliance. (C) 2011 American Institute of Physics. [doi:10.1063/1.3583656]“
“A novel sugar ester poacynose (1) was isolated from the flowers of Poacynum hendersonii together with 31 known compounds. The structure of 1 was established mainly on the basis of 1D and 2D NMR spectral data. Among the isolates, several constituents, such as kaempferol 3-O-sophoroside (5), picein (16), and 4-hydroxybenzoic acid 4-O-beta-d-glucopyranoside (17) moderately promoted adipogenesis of 3T3-L1 cells. In addition, simultaneous quantitative analysis of eight flavonoid constituents from the flower and leaf parts of P. hendersonii was developed.