Browsing by Author "AYESHA HAMEED"

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    Green synthesis of economically viable nickel oxide nanoparticles using artemisia scoparia leaf extract
    (UMT, Lhr, 2022) AYESHA HAMEED
    Economically viable nickel oxide nanoparticles (NiO NPs) were prepared from the aqueous leaves extract of medicinal plant Artemisia scoparia (A. scoparia) via simple green route. Green method used the leaves extract and metal salt that act as stabilizing and reducing agents due to the more availability of antioxidants and phenolic contents in it. This plant is used in the treatment of different ailments and has various medicinal properties. Green method was selected for the fabrication of NiO NPs because of its environment friendly nature. Properties of NiO NPs were confirmed through various analytical techniques such as X-ray diffraction technique (XRD), Scanning electron microscopy (SEM), Ultraviolet-Visible spectroscopy (UV-Vis), Energy dispersive X-ray spectroscopy (EDX) and Fourier transform infrared spectroscopy (FTIR). Biosynthesized NPs were evaluated for their antibacterial activity against four bacterial strains i.e. Escherichia coli (E. coli), Staphylococcus aureus (S. aureus), Bacillus subtilis (B. subtilis) and Salmonella enteritidis (S. enteritidis) by using agar well diffusion method. NiO NPs were also tested for their antioxidant activity by 2, 2-diphenylpicrylhydrazy (DPPH) Assay and Total phenolic content (TPC) methods. The synthesized NiO NPs were also investigated for Photocatalytic activity on themethylene blue (MB) dye degradation.
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    Psychological health problem and bullying behavior among adolescents
    (UMT Lahore, 2014) AYESHA HAMEED
    Bullying behavior in childhood has been found out associated with depression, anxiety and stress in adolescence. The objective of the study was to examine gender and age differences among bullies and comparing adolescents on depression, anxiety and stress. In present study of 113 school going adolescents (Girls=57, Boys=56) in grades 5 to 10 participated. Sample was selected through systematic random sampling technique from public and private schools in Lahore. Adolescents completed Depression, Anxiety & Stress Scale (DASS) developed by Lovibond & Lovibond (1995) and Illinois bullying scale by Espelage & Holt (2001). The results indicated that across gender (F=8.66,p=.00), girls showed more stress (M=16.96,SD=8.63) than boys (M=12.66=SD=6.83). Further correlation analysis indicated age significantly and positively correlated to victim (r=.26**), bullying behavior (r=.20*), depression (r=.25**), anxiety (r=.27**) and stress (r=.34*). Father’s education was also observed significantly negatively correlated to bullying behavior (r=-.20**) among adolescents. Regression analysis was performed to identify the predictor of psychological health problems among adolescents. Analysis revealed mental health problem as significant predictor of bullying behavior (β= .18, F= 4.00, p<.05) and stress (β= .21, F= 5.34, p<.05). Fighting was also observed as significant predictor of stress(β= .29, F= 10.18, p<.05). Victimization was observed as significant predictor of depression (β=.18, F= 4.12, p<.05), anxiety (β= .26, F= 8.40, p<.05) and stress (β= .23, F= 6.46, p<.05). Adolescents who are bullies and also reported symptoms of depression, anxiety and stress were at an increased risk of developing psychological health related problems. The need for psychiatric intervention should be considered. Furthermore, teachers and parents can prepare mutual management plan collaboratively effective for school going adolescents.