This research reveals a comprehensive relationship between the mechanical energy harvesting ability and the nanomaterials’ morphologies, dimensions, and properties. It provides a guideline for the design of high-power nanogenerators and the development of piezoelectric nanodevices in general. (C) 2010 American Institute of Physics. [doi: 10.1063/1.3462468]“
“Leaf check details and stem volatile oils were obtained differently from Hypoestes phyllostachya ‘Rosea’ (Acanthaceae) in 0.36 and 0.13% yields, respectively. GC-MS

analyses revealed 38 compounds are responsible for 99.86% of the leaf oil, and 26 compounds make-up 99.89% of the stem oil. Identified compounds were 26 in leaf, which make-up 93.43% of it; 21 identified in stem, which represent 90.45% of it. Leaf oil is dominated by sesquiterpenoids (69.37%), while stem oil contain mostly sesquiterpene hydrocarbons (87.25%). Most abundant compounds in leaf oil are: -elemenone (20.04%),

8-cendren-13-ol (19.35%), 5-cendranone (10.60%), guaiol (4.43%), geranyl tinglate (4.30%) and germacrene B (4.21%). Prominent compounds in stem oil are: viridiflorene (31.28%), allo-aromadendrene (14.65%), acoradiene (6.99%), -gurjunene (4.15%) and valencene (3.97%). The known ubiquitous monoterpenes are not in both leaf and stem essential oils. We report 20 other compounds in leaf oil, and Selleck Stem Cell Compound Library 16 other compounds in stem oil as composition of Hypoestes phyllostachya ‘Rosea’ which is scarce in literature.”
“Synthesis of poly[oxy-(2,3,5,6-tetrafluoro-1,4-phenylene)-(1,3,4-oxadiazol-2-yl)-1,4-phenylene] (F-PEOz) was examined by nucleophilic aromatic substitution reaction of 2-(4-hydroxyphenyl)-5-pentafluorophenyl-1,3,4-oxadiazole

(HPOz). Only low molecular weight F-PEOz or crosslinked insoluble polymers were obtained by the solution polymerization with bases. In contrast, thermally induced solid-state HM781-36B solubility dmso polymerization of HPOz potassium salts at 180 degrees C for 1 h gave fully soluble F-PEOz with the yield of 84% and its reduced viscosity was 0.66 dL The longer polymerization time gave insoluble polymers due to the crosslinking reaction even in solid state. The solid-state polymerization did not undergo topochemically and it proceeded in an amorphous state. The crosslinking reaction was slightly inhibited by the solid-state polymerization. F-PEOz exhibited excellent solubility, high T(g) of 246 degrees C and good thermal stability. (c) 2010 Wiley Periodicals, Inc. J Appl Polym Sci 118: 91-98, 2010″
“This paper presents the conception, modeling, and simulation of a silicon-based group-IV semiconductor injection laser diode in which the GeSn-alloy active region has a direct band gap wavelength in the 1.8 to 3.0 mu m midwave infrared for 6%-12% alpha-Sn.