A prolongation of treatment time and an increase in
the dissipated power significantly improved the E. coli killing efficiency of the atmospheric pressure DBD plasma. (C) 2009 American Institute of Physics. [doi:10.1063/1.3236570]“
“Different types of acrylic core-shell rubber particles with a poly(butyl acrylate) (PBA) core and a grafted poly(methyl methacrylate) (PMMA) shell were synthesized. The average size of acrylic core-shell latex particles ranged from 100 to 170 nm in diameter, having the core gel content in the range of 35-80%,. The melt blending behavior of the poly(vinyl chloride) (PVC) and the acrylic core-shell rubber materials BKM120 molecular weight having different average particle sizes and gel contents was investigated in a hatch mixing process. Although the torque curves showed that the particulate flow of the PVC in the blends was dominant, some differences were observed when the size and gel content of the particles varied. This behavior
can be attributed find more to differences in the plasticizing effect and dispersion state of various types of core-shell rubber particles, which can vary the gelatin process of the PVC in the mixing tool. On the other hand, the highest toughening efficiency was obtained using core-shell rubber particles with the smallest particle size (i.e., 100 nm). The results showed that increasing the gel content of the core-shell impact modifiers with the same particle size improved the particle dispersion state in the PVC matrix. The toughening efficiency decreased for the blends containing 100 and 170 nm rubber particles as the gel content increased. Nevertheless, unexpected behavior was observed for the blends containing 140 nm rubber particles. It was found that a high level of toughness BX-795 PI3K/Akt/mTOR inhibitor could be achieved if the acrylic core-shell rubber particles
as small as 100 nm had a lower gel content. (C) 2009 Wiley Periodicals, Inc. J Appl Polym Sci 113: 2590-2597, 2009″
“Purpose The psychometric properties of a health-related quality of life (HRQOL) instrument, the Cystic Fibrosis Questionnaire-Revised (CFQ-R), were evaluated in a national sample of patients with cystic fibrosis (CF).
Methods The Epidemiologic Study of CF is a national, multicenter, longitudinal cohort study containing CFQ-R and health outcomes data. Developmentally appropriate versions of the CFQ-R were available from 7,330 patients aged 6-70 years and a proxy version from 2,728 parents of school-age children. The CFQ-R was completed during a “”stable”" or “”sick”" visit before recording health outcomes such as weight, lung function, and pulmonary exacerbations.
Results There were few floor and ceiling effects and strong internal consistency (Cronbach alpha >= 0.70) for most scales. The CFQ-R consistently discriminated between patients seen for sick-versus-well visits, and among stages of disease severity based on lung function.