“
“Flake-shaped carbonyl iron (FCI) powder was prepared by ball milling spherical carbonyl iron (SCI) powder for 20 h. The thicknesses of the FCI particles were similar to 0.1-0.3 mu m with a diameter of similar to 5-10 mu m. The milling process increased the aspect ratio from similar to 1 for spherical powder to an aspect ratio of similar to 20-100 for flake one. The complex permittivity (epsilon’ – j epsilon ”) and permeability (mu’ – j mu ”) were measured by the transmission/reflection method in the frequency range of 2-18 GHz for composites with various weight ratios of SCI and FCI. The results show that all

epsilon’, epsilon ”, mu’ and mu ” substantially increased after the milling treatment. Compared to SCI particles, HDAC inhibitor the FCI particles exhibit higher permeability, higher permittivity, and better absorbing properties within the frequency test range. The magnetic loss tangent of FCI composites shows that FCI, with their large shape anisotropy, may have a higher resonance frequency and exceed the Snoek’s limit in the gigahertz frequency range. For the 50 wt.% FCI composite with a thickness of 3 mm, the reflection loss at 5.5 GHz reaches -23.0 dB. (C) 2011 American Institute of Physics. [doi: 10.1063/1.3536340]“
“Recently, genome-wide association

studies in patients affected by HCV infection have identified a strong association between sustained virological response to peg-interferon/ribavirin and spontaneous viral clearance and common single nucleotide CX-6258 polymorphisms (SNPs) near the IL28B gene, encoding for interferon-lambda-3. Thus, it is anticipated that IL28B genotype determination will be integrated in clinical practice

to guide treatment BVD-523 ic50 decisions. Here, we describe a simple tetra-primer amplification refractory mutation system polymerase chain reaction (T-ARMS-PCR) for the evaluation of the rs12979860 C>T IL28B SNP, for which strong evidence of association with clinical outcomes has been collected in subjects of European descent. Valid genotypic data were obtained for over 99% of subjects analysed, and T-ARMS-PCR procedures were validated by the analysis of DNA samples of 164 patients with chronic HCV infection. In conclusion, this method allows rapid, reproducible, inexpensive and accurate detection of rs12979860 polymorphism without need of any special equipment and is also suitable for evaluation of a low number of samples on a routine basis.”
“This paper presents the fabrication and characterization of parylene-bonded isotropic Nd-Fe-B powder micromagnets with dimensions in the range of 100-1000 mu m. The batch fabrication process involves dry-pressing of magnetic powders into microstructured cavities in a substrate followed by conformal vapor deposition of parylene C. The parylene coating penetrates the gaps between the magnetic particles and mechanically bonds the powder.