“Carbon nanotube-polymer nanocomposites were synthesized and characterized successfully. In this work, multiwall carbon nanotubes (MWCNT) were opened using HNO(3)/H(2)SO(4) mixture and filled by metal nanoparticles such as silver nanoparticles through 3-Methyladenine concentration wetchemistry method. The oxidized MWCNT were reacted subsequently with thionyl chloride, 1,6-diaminohexane, producing MWNT-amine functionalized. Then the MWCNT containing metal nanoparticles were used as a monomer with different weight percentages in melt polymerization with An and CNCl separately. Furthermore,
the polyamide and polytriazine modified MWCNT were used for the preparation of metal ion complexes such as Fe(+2) and La(+3). The structures and properties of nanocomposites were evaluated by TEM, DSC, TGA, and FT-IR methods. The chelating behavior and sorption capacities of prepared nanocomposites were carried out by using some metal ions. (C) 2010 Wiley Periodicals, Inc. J Appl Polym Sci 118: 113-120, 2010″
“Background: Disarrangement in fatty acids and oxidative stress are features of cystic fibrosis. Cholesterol is very sensitive to oxidative stress.
Objectives: The objectives were to examine whether cholesterol oxidation products are altered in cystic fibrosis and whether they are associated with fatty acids and with characteristics of the disease state.
Design: 7-Ketocholesterol and 7 beta-hydroxycholesterol (prototype molecules of free radical-mediated
cholesterol oxidation) and the fatty acid profile were assessed by mass spectrometry in patients and in sex-and age-matched control subjects.
Results: Momelotinib manufacturer In a comparison with control subjects, mean (+/- SD) cholesterol oxidation was higher (7-ketocholesterol: 11.31 +/- 5.1 compared with 8.33 +/- 5.5 ng/mL, P = 0.03; 7 beta-hydroxycholesterol: 14.5 +/- 6.8 compared with 9.7 +/- 4.1 ng/mL, P = 0.004), total saturated fatty acids were higher (31.90 +/- 1.93% compared
with 30.31 +/- 0.98%, P < 0.001), monounsaturated fatty acids were Entinostat higher (29.14 +/- 3.85% compared with 25.88 +/- 2.94%, P = 0.004), omega-6 (n-6) polyunsaturated fatty acids were lower (34.84 +/- 4.77 compared with 39.68 +/- 2.98%, P < 0.0001), and omega-3 (n-3) polyunsaturated fatty acids were comparable in patients with cystic fibrosis. Oxysterols were inversely associated with 24:0 and 18:2 omega-6 fatty acids but did not correlate with the increased oleic acid or with any of the omega-3 fatty acids.
Conclusions: Cystic fibrosis is characterized by relevant cholesterol oxidation that is associated with an abnormal fatty acid profile. The interplay between oxysterols and fatty acids potentially provides insight into the biological mechanisms that underlie this complex disease. Am J Clin Nutr 2009;90:477-84.”
“We study the anomalous acoustic softening behavior in La68-xCexAl10Cu20Co2 (x=0, 34, and 68) metallic glasses by magnetic susceptibility, thermal expansion, and specific heat at low temperatures.