“Microwave attenuation characteristics and magnetic and dielectric properties have been studied for Ba(3)Co(x)Zn(2-x)Fe(24)O(41) with x = 0.8 and 2.0 ferrite flaky-filler composites. Results show that mu’(0) and mu ”(max) are enhanced by >150 and >70%, respectively,
and epsilon’ and epsilon ” are almost the same, as compared to conventional composites. Therefore, the percentage bandwidth W(P) is expanded from 110% to 150% for reflectivity RL <=-10 dB for the flaky-filler composites, which achieves 75% of the theoretically maximum bandwidth. For all composites, two matching frequencies are found. The first matching frequency is attributed to the quarter-wavelength resonator and the second matching frequency is mainly determined by the values of both mu’ and epsilon’. At the second matching thickness, the flaky-filler composites also exhibit good attenuation PF-03084014 nmr characteristics with low reflectivity of RL <-20 dB and W(P)= 40% at L band. (C) 2011 American Institute of Physics. [doi:10.1063/1.3638448]“
“BACKGROUND: The enzyme polyphenol oxidase (PPO) reduces the extent of proteolysis and lipolysis within red clover fed to ruminants. S63845 PPO catalyses the conversion of phenols to quinones,
which can react with nucleophilic cellular constituents (e.g. proteins) forming protein-phenol complexes that may reduce protein solubility, bioavailability to rumen microbes and deactivate plant enzymes. In this study, we localized PPO in red clover leaf tissue by immunogold labelling and investigated whether red clover lipid was protected in the absence of PPO-induced protein-phenol complexes and plant enzymes (lipases).\n\nRESULTS: PPO protein was detected to a greater extent (P < 0.001) within the chloroplasts of mesophyll cells in stressed (cut/crushed and wilted for 1 h)
than freshly cut leaves for both palisade (61.6 and 25.6 Au label per chloroplast, respectively) and spongy mesophyll cells (94.5 and 40.6 Au label per chloroplast, respectively). Hydrolysis of lipid and C18 polyunsaturated fatty acid biohydrogenation during in vitro batch culture was lower learn more (P < 0.05) for wild-type red clover than for red clover with PPO expression reduced to undetectable levels but only when cellular matrices containing protein-phenol complexes were present.\n\nCONCLUSION: Damaging of the leaves resulted in over a doubling of PPO detected within mesophyll cells, potentially as a consequence of conversion of the enzyme from latent to active form. PPO reduction of microbial lipolysis was apparent in macerated red clover tissue but not in the absence of the proteinaceous cellular matrix, suggesting that the PPO mechanism for reducing lipolysis may be primarily through the entrapment of lipid within protein-phenol complexes. (C) 2009 Society of Chemical Industry”
“Background. Prognostication following anoxic coma relies on clinical assessment and is assisted by neurophysiology.