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Hydrophobic porous polymeric materials have attracted great interests recently as potential candicate for oil-water separation due to their high selectivity and sorption capacity. Herein, we present a green, simple and cost-effective method to change hydrophilic melamine formaldehyde (MF) foam to hydrophobic carbon nanotubes (CNTs) coated MF foam through an immersion process. The MF foam was produced from the MF resin which was synthesized in a laboratory by a condensation reaction between melamine and formaldehyde under alkaline condition with a molar ratio of melamine to formaldehyde of 1:3. The MF foam has an open-cell structure with the average pore diameter of 350 m, density of 25 kg •m-3 and porosity of 98 %. The as-prepared CNTs-coated MF foam exhibits high sorption capacity (23–-66 g/g) for oils and organic solvents, good recyclability and high selectivity.

This study was conducted to investigate the genetic diversity of porcine circovirus type 2 (PCV2) and its coinfecting pathogens in pigs with respiratory disease in Vietnam. Samples from 127 clinical cases were obtained from different southern provinces of Vietnam from January 2018 to January 2020 for PCR and sequence analysis. The infection rate of PCV2 was 78.8%, and the major pathogens found in coinfections with PCV2 were porcine reproductive and respiratory syndrome virus, Mycoplasma hyopneumoniae, and Haemophilus parasuis. Forty-three PCV2-positive clinical samples were selected for amplification and sequencing of the ORF2 region. Phylogenetic analysis of PCV2 ORF2 showed that five of the sequences belonged to PCV2b (11.6%) and 38 belonged to PCV2d (88.4%), indicating that PCV2d strains were predominant in southern provinces of Vietnam. Alignment of the predicted amino acid sequences of the PCV2 capsid protein revealed polymorphic sites in the antibody recognition regions. This study demonstrates the prevalence of the PCV2d genotype in southern Vietnam and presents a comprehensive overview of the coinfecting pathogens associated with PCV2 in young pigs with respiratory disease.

Community health workers (in Vietnam referred to as village health workers) have the potential to play a key role in expanding access to evidence-based tobacco use treatment. We conducted a cluster randomized controlled trial in community health centers in Vietnam that compared the effect of provider advice and cessation assistance (i.e. brief counseling and patient education materials) (BC) vs. BC + three sessions of in-person counseling delivered by a village health worker (BC+R) on providers’ and village health workers’ adherence to tobacco use treatment guidelines. All village health workers and health care providers received training. This paper presents data on the effect of the intervention on village health workers’ adherence to tobacco use treatment guidelines, including asking about tobacco use, advising smokers to quit, offering assistance and their attitude, norms, and self-efficacy related to tobacco use treatment. We examined changes in adherence to tobacco use treatment guidelines before and 12 months after the intervention among 89 village health workers working in the 13 community health centers enrolled in the BC+R study condition. Village health workers’ adherence to tobacco use treatment guidelines increased significantly. Village health workers were more likely to ask about tobacco use (3.4% at baseline, 32.6% at 12 months), offer advice to quit (4.5% to 48.3%) and offer assistance (1.1% to 38.2%). Perceived barriers to treating tobacco use decreased significantly. Self-efficacy and attitudes towards treating tobacco use improved significantly. Increased adherence to tobacco use treatment guidelines was associated with positive attitudes towards their role in delivering tobacco use treatment and increasing awareness of the community health center smoke-free policy. The findings suggest that, with training and support systems, village health workers can extend their role to include smoking cessation services. This workforce could represent a sustainable resource for supporting smokers who wish to quit.