“
“To improve the thermal conductivity of BN-filled epoxy composite, admicellar polymerization was used to coat polystyrene and polymethyl methacrylate on the BN surface to improve the interfacial adhesion in the composite. The treated surface was characterized by FTIR and contact angle measurements. The results show that the admicellar treatment led to improved wettability of epoxy
resin on the treated surface. Thermal conductivity of the composite increased from 1.5 W/mK for untreated BN to 2.69 W/mK when the admicellar-treated BN was used, indicating improvement in the interfacial adhesion between BN and epoxy resin in the composite. The mechanical properties of the composite also improved significantly. The surfactant : monomer molar ratio of 1 : 10 was found to be the optimum condition for the admicellar polymerization process. The solubility parameter concept was used Nirogacestat solubility dmso to explain the difference in the effectiveness of polystyrene Dihydrotestosterone datasheet and polymethyl methacrylate. When compared to the more conventional silane treatment, admicellar treatment was found to be
more effective in improving the interfacial adhesion between the BN particles and epoxy resin. SEM micrographs of the fractured surface of the composite further confirm the improvement in the interfacial adhesion after the admicellar treatment. (C) 2010 Wiley Periodicals, Inc. J Appl Polym Sci 119: 3234-3243, 2011″
“Background: Insecticide-treated bed nets (ITNs) reduce malaria transmission
and are an important prevention tool. However, there are still information gaps on how the reduction in malaria transmission by ITNs affects parasite genetics population structure. This study examined the relationship between transmission reduction from ITN use and the population genetic diversity of Plasmodium falciparum in an area of high ITN coverage in western Kenya.
Methods: Parasite genetic diversity was assessed by scoring eight single copy neutral multilocus microsatellite (MS) markers in samples collected from P. falciparum-infected children (< five years) before introduction of ITNs (1996, baseline, n = 69) and five years www.selleckchem.com/products/dorsomorphin-2hcl.html after intervention (2001, follow-up, n = 74).
Results: There were no significant changes in overall high mixed infections and unbiased expected heterozygosity between baseline (% M(A) = 94% and H(e) = 0.75) and follow up (% M(A) = 95% and H(e) = 0.79) years. However, locus specific analysis detected significant differences for some individual loci between the two time points. Pfg377 loci, a gametocyte-specific MS marker showed significant increase in mixed infections and H(e) in the follow up survey (% M(A) = 53% and H(e) = 0.57) compared to the baseline (% M(A) = 30% and H(e) = 0.29). An opposite trend was observed in the erythrocyte binding protein (EBP) MS marker. There was moderate genetic differentiation at the Pfg377 and TAA60 loci (F(ST) = 0.117 and 0.