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您的检索式：作者名="Shahnaj Parvin"
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| 1 | Analgesic,antibacterial and central nervous system depressant activities of Albizia procera leaves显示文摘Objective:To ascertain analgesic,antibacterial and central nervous system(CNS)depressant activities of ethyl acetate,dichloromethane and carbon tetrachloride fractions of methanol extract of Albizia proceru(A.procera)leaves.Methods:Leaves extracts of A.procera were tested for analgesic activity by acetic acid induced and formalin test method in mice.The in vitro antibacterial activity was performed by agar well diffusion method.CNS depressant activity was evaluated by hole cross and open field tests.Results:All the extracts at 200 mg/kg exhibited significant(P<0.01)analgesic activity in acetic acid induced and formalin tests method in mice.Analgesic activity of the ethyl acetate fraction was almost same like as standard drug indomelhacin in acetic acid induced method.The CNS depressant activity of the extracts at 500 mg/kg was comparable to the positive control diazepam as determined by hole cross and open field test method.The extracts exhibited moderate antimicrobial activity against all the tested microorganisms(Staphylococcus aureus,Bacillus cereus,Pseudomonas aeruginosa,Esherichia coli,Shigetta soneii.Shigella boydii)at concentration of 0.8 mg/disc.The measured diameter of zone of inhibition for the extracts was within the range of 7 to 12 mm which was less than the standard kanamycin(16-24 mm).Conclusions:It is concluded that all the extracts possess potential analgesic and CNS depressants activity.This study also showed that different fractions of methanol extract could be potential sources of new antimicrobial agents. | Mahfuza Khatoon Hajera Khatun Ekramul Islam Shahnaj Parvin | 2014 | Asian Pacific Journal of Tropical Biomedicine2014，4，4： | 1 |
| 2 | Bandgap Saturation in Room Temperature Synthesized Cobalt Doped ZnS Nanoparticles显示文摘In this study,cobalt doped ZnS nanoparticles(NPs)have been synthesized by simple chemical precipitation method with six different weight percentages(0.0,0.1,0.3,0.5,0.7 and 1.0%)of cobalt content at room temperature(30°C).X-ray diffraction(XRD)patterns of the samples revealed the formation of cubic structure and calculated particle size were found to be nano-sized.Optical band gap values have been obtained from UV-Vis absorption spectra.It has also been found that energy band gap(Eg)increases with the increase in molar concentration of reactant solution and the variation of bandgap was between 5.30-6.01 eV with cobalt doping. | Sujan Kumar Das Shahnaj Parvin Ummay Honey MdSohel Rana Nasrin Jewena Jahirul IslamKhandaker Farid Ahmed | 2020 | 材料科学与工程(中英文A版)2020，10，3： | 0 |
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