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RISS 인기검색어
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- 저자 : Nahid Sharmin (검색결과 2 건)
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Sharmin Akter,A S M Bazlul Karim,Md Wahiduzzaman Mazumder,Md Rukunuzzaman,Khan Lamia Nahid,Bishnu Pada Dey,Maimuna Sayeed,A Z M Raihanur Rahman,Kaniz Fathema,Mukesh Khadga 대한소아소화기영양학회 2022 Pediatric gastroenterology, hepatology & nutrition Vol.25 No.5
Purpose: Perinatal cytomegalovirus (CMV) infection can lead to biliary atresia (BA) in different entities. This study aimed to compare the clinical, hematological, biochemical, and histological features of infants with BA based on their CMV immunoglobulin M (IgM) status at presentation. Methods: This cross-sectional descriptive study was carried out between January 2019 and June 2020 at the Department of Pediatric Gastroenterology and Nutrition at the Bangabandhu Sheikh Mujib Medical University (BSMMU) in Dhaka. Forty-three patients with BA were selected purposively and categorized into either the CMV IgM-positive or CMV IgM-negative BA group. Categorical variables were compared using Fisher’s exact test and chi-square tests, while the Student’s t-test and Mann–Whitney U-test were used to compare continuous variables. For all statistical tests, a p-value <0.05 was considered statistically significant. Results: Thirty-three (76.7%) of the cases were between 2 and 3 months of age on admission. The clinical, hematological, and biochemical parameters did not differ significantly between the CMV IgM-positive and CMV IgM-negative BA groups. Most (50.0%) of the CMV IgM-positive cases had fibrosis stage F2, while 43.5% of the CMV IgM-negative cases had fibrosis stage F3, with no significant difference between the groups (p=0.391). Conclusion: Our data shows no significant distinction between CMV IgM-positive and CMV IgM-negative BA, suggesting that CMV does not contribute to BA pathogenesis.
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Effect of Ni-doping on coloring and photocatalytic performance of MgTi2O5 nanoceramics
Moksodur Rahman,Md. Lutfor Rahman,Bristy Biswas,Md. Farid Ahmed,Md. Aftab Ali Shaikh,Shirin Akter Jahan,Nahid Sharmin 한국공업화학회 2023 Journal of Industrial and Engineering Chemistry Vol.126 No.-
The Ni-doped MgTi2O5 has been synthesized by sol–gel method and investigated the effect of sinteringwith %Ni content. The heat inspection of intermediate products was done at 1000–1400 C. The structuralproperties of synthesized samples were studied by various methods viz. simultaneous thermal analysis(TGA-DTG), Powder X-ray diffraction (PXRD), Fourier transform infrared spectroscopy (FT-IR), Scanningelectron microscopy (SEM) with energy dispersive X-ray spectroscopy (EDS), Zeta Sizer, and UV–VisNIR spectroscopy. The crystallite size of the obtained samples was determined from PXRD analysis usingClassical Scherrer formulae, modified Scherrer model, Williamson–Hall method, and size-strain plotequation. Unit cell parameter was determined precisely from PXRD data based on Rietveld refinementanalysis, which confirmed insertion of Ni2+ ions into the MgTi2O5 structure by decreasing unit cell parameters. Particle size was measured using dynamic light scattering and laser diffraction techniques. Opticalparameter analysis reveals that nano-pigments with narrow bandgap energy were suitable for photocatalysis. Ni0.6Mg0.4Ti2O5 sintered at 1400 C exhibits highest photocatalytic activity (93%) within120 min solar light irradiation. Color properties of the samples were determined from DRS measurementusing CIE-L*a*b* software. The obtained outcomes confirmed that the optical, photocatalytic and colorproperties of prepared samples improved with increasing Ni-contents.
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