The second excited relaxation peak of the hybrids was attributed to the oriented distribution

of hindered amine in TPU and strong intermolecular interactions between the hindered amine and the hard segments of TPU. The complex and interesting evolution in structure and properties of the hybrids with hindered amine incorporation was interpreted. The loss peak areas (TA) of the hybrids increased greatly, and the high temperature damping properties was expected to improve. This kind of novel hybrid presented a promising future as high performance Ferroptosis inhibitor damping material. (C) 2010 Wiley Periodicals, Inc. J Appl Polym Sci 120: 906-913, 2011″
“The recombinant strain of the yeast Candida famata 13-76 that overexpresses FMN1 gene coding for riboflavin kinase, accumulates significant amounts of flavin mononucleotide (FMN) in the cultural liquid. The effectiveness of FMN production by this strain under different conditions was evaluated. First, the medium composition was optimized in shake flask cultures. After preliminary experiments for nitrogen source selection, the two-level Plackett-Burman (PB) design was performed to screen medium components that significantly influence the FMN production. Among phosphatase inhibitor library the 15 variables tested, KH(2)PO(4), CaCl(2), (NH(4))(6)Mo(7)O(24), CuSO(4) and yeast

extract, were identified as the most significant factors for FMN production (confidence levels above 95%). In order to investigate the quantitative effects for five variables selected from PB design on FMN production, a central composite design (CCD) was subsequently employed for further optimization. The optimization strategies used led to a 4.77-fold increase in the FMN production. A batch culture

profile in a 1 L fermenter was consequently designed according to the optimal medium observed in shake flasks. A final FMN concentration of 231 +/- 4.11 mg/L was obtained in 40 h, which further verified the practicability of the used strategy. (C) 2009 Elsevier B.V. All rights reserved.”
“Carotenoids are known Selleck SC79 to be potent quenchers of singlet molecular oxygen [O-2 ((1)Delta(g))]. Solar light-induced photooxidative stress causes skin photoaging by accelerating the generation of reactive oxygen species via photodynamic actions in which O-2 ((1)Delta(g)) can be generated by energy transfer from excited sensitizers. Thus, dietary carotenoids seem to participate in the prevention of photooxidative stress by accumulating as antioxidants in the skin. An in vivo study using hairless mice clarified that a O-2 ((1)Delta(g)) oxygenation-specific peroxidation product of cholesterol, cholesterol 5 alpha-hydroperoxide, accumulates in skin lipids due to ultraviolet-A exposure. Matrix metalloproteinase-9, a metalloproteinase family enzyme responsible for the formation of wrinkles and sagging, was enhanced in the skin of ultraviolet-A -irradiated hairless mice.