Highly Efficient Formylation of Alcohols, Thiols and Aniline Derivatives by a Heterogeneous (HCOOH/SiO2) System under Microwave Irradiation and Solvent-free Conditions

A simple, rapid and efficient microwave-assisted procedure for the formylation of aniline derivatives and alcohols, using a heterogeneous (HCOOH/SiO2) system under solvent-free conditions is reported. The method is applied to a set of amines, alcohols and thiols and short reaction times (<10 min) with high yields are reported. This protocol introduces a practical and viable green technology of solvent-free and catalyst-free reactions.Keywords: Alcohols, anilines, SiO2, HCOOH, microwave irradiation, solvent-free condition

Studies of antibacterial effects of synthesized silver nanoparticles using a novel thermotolerant Isoptericola variabilis sp. IRSH1 against Staphylococcus aureus and Pseudomonas aeruginosa

Background: Silver nanoparticles can consider as an alternative source for some antibiotic usages due to those effective antibacterial activity and eco-friendly characteristics. Objective: This in vitro study was done to evaluate the inhibitory effect of extracellular synthesized of silver nanoparticles using inexpensive cellulosic materials and supernatant culture of Isoptericola variabilis sp. IRSH1 against Staphylococcus aureus and Pseudomonas aeruginosa. Methods: Silver nanoparticles were produced by extracellular biosynthesis using supernatant culture of a novel thermotolerant Isoptericola variabilis sp.IRSH1 and characterized. The antibacterial activities of the synthesized silver nanoparticles were examined by the standard Kirby- Bauer disc diffusion method against Staphylococcus aureus and Pseudomonas aeruginosa on Muller-Hinton agar plates. Findings: The silver nanoparticles were produced with an average size of 77 nm and 0.29 polydispersity index (PDI). The inhibition zones of AgNPs (1000 μg/ml) were 10 mm and 11 mm against Staphylococcus aureus and Pseudomonas aeruginosa respectively. Conclusion: The biosynthesized AgNPs has good antibacterial activity against Staphylococcus aureus and Pseudomonas aeruginosa. The results indicate Pseudomonas aeruginosa is more sensitive to silver nanoparticles. Keywords: Nanotechnology, Metallic nanoparticle, Anti-bacterial agents, Staphylococcus aureus, Pseudomonas aeruginos

Management Science Letters The effectiveness of resilience training on life satisfaction among mothers with mentally retarded children

The present study investigates the effectiveness of resilience training on life satisfaction among the mothers with mentally retarded children. The method is semi experimental using pretest posttest with control group. Statistical population of research includes elementary mentally retarded student who were enrolled in Najafabad Sareban exceptional school over the period 2012-2013 educational year. Sample group includes 50 subjects who randomly replaced in control and experimental groups. Experimental group members participated in a 10-session resilience training. Finally, both groups completed post-tests where research scales were Diener life satisfaction questionnaire. The data are analyzed by co-variance analysis test. Results are significant and indicates that resilience training is effective on life satisfaction (p<0.05)