A novel biosorbent, Haplophragma adenophyllum (HAB) was employed to explore the biosorption mechanism of Gentian Violet (GV) dye. The novel sorbent was characterized by using FTIR spectra and physiochemical analysis. The effect of different optimizing factors like HAB dosage, GV initial concentration, contact time between sorbent and sorbate, pH of a solution, and the temperature was studied. The optimum removal of GV by HAB was observed at pH 6.0. The equilibrium study was carried out using Langmuir and Freundlich isotherms. Experimental data fitted well in Langmuir isotherm indicating monolayer isotherm with qmax value obtained at optimum process condition of 13.21 mg/g. Kinetics study was carried out and followed by pseudo-second-order model. Thermodynamics studies reveal the endothermic reaction.
Working Memory (WM) and Short Term Memory (STM) performance were examined in children with Intellectual Disability. They were aged between 4 to 16 years. The study also explored the relationship of Intelligence Quotient (IQ) with WM and STM. The study found that the children with Intellectual Disability (ID) were impaired on all the measures of WM/STM, albeit with specific areas of strength displayed by children functioning within the Borderline range of ID. Overall, children with delay in intellectual functioning performed significantly lower compared to typically-developing children.
Purpose: The main purpose of this research was to investigate the functioning of working memory of children with Speech and Language Impairment (SLI).Method: Two groups of children were selected for the purpose; Children with Speech and Language impairment (SLI) and Typically Developing (TD) children. The SLI group consisted of 15 children (10 male and 5 female) with an age range of 75-154 months. The TD children consisted of 23 children (12 male and 11 female) with an age range of . All children were assessed on the intelligence test followed by a computerized assessment of Short Term Memory (STM) and Working Memory (WM). The assumption was that children with SLI would demonstrate impairments on tasks of working memory compared to typically developing children. Data was analyzed using MANCOVA and t-test by SPSS statistical package.
Results:The results indicate that the SLI group showed impairment on the verbal working memory tasks as there was no difference observed between the TD and SLI group on the visual-spatial working memory components.
Conclusion:The SLI group showed their weaknesses on tasks measuring phonological short term working memory; whereas no difference was noted on tasks of visual-spatial working memory. These findings may help in the application of intervention strategies for children with SLI.
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