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4篇 您的检索式:作者名="M.Ansari"
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1Genotoxicity of ferric oxide nanoparticles in Raphanus sativus:Deciphering the role of signaling factors,oxidative stress and cell death显示文摘We have studied the genotoxic and apoptotic potential of ferric oxide nanoparticles(Fe_2O_3-NPs) in Raphanus sativus(radish).Fe_2O_3-NPs retarded the root length and seed germination in radish.Ultrathin sections of treated roots showed subcellular localization of Fe_2O_3-NPs,along with the appearance of damaged mitochondria and excessive vacuolization.Flow cytometric analysis of Fe_2O_3-NPs(1.0 mg/m L) treated groups exhibited 219.5%,161%,120.4% and 161.4% increase in intracellular reactive oxygen species(ROS),mitochondrial membrane potential(ΔΨm),nitric oxide(NO) and Ca2+influx in radish protoplasts.A concentration dependent increase in the antioxidative enzymes glutathione(GSH),catalase(CAT),superoxide dismutase(SOD) and lipid peroxidation(LPO) has been recorded.Comet assay showed a concentration dependent increase in deoxyribonucleic acid(DNA) strand breaks in Fe_2O_3-NPs treated groups.Cell cycle analysis revealed 88.4% of cells in sub-G1 apoptotic phase,suggesting cell death in Fe_2O_3-NPs(2.0 mg/m L) treated group.Taking together,the genotoxicity induced by Fe_2O_3-NPs highlights the importance of environmental risk associated with improper disposal of nanoparticles(NPs) and radish can serve as a good indicator for measuring the phytotoxicity of NPs grown in NP-polluted environment.Quaiser Saquib Mohammad Faisal Abdulrahman A.Alatar Abdulaziz A.Al-Khedhairy Mukhtar Ahmed Sabiha M.Ansari Hend A.Alwathnani Mohammad K.Okla Sourabh Dwivedi Javed Musarrat Shelly Praveen Shams T.Khan Rizwan Wahab Maqsood A.Siddiqui Javed Ahmad 2016Journal of Environmental Sciences2016,28,9:2
2Cobalt Schiff base complexes: Synthesis characterization and catalytic application in Suzuki–Miyaura reaction显示文摘3-Methoxysalicylaldehyde was condensed with the amines 4-aminoacetophenone and 2-amino-5-bromopyridine to obtain Schiff base ligands, 1 and 2, which were coordinated to cobalt salts as complex 1 and complex 2, respectively. The synthesized ligands and complexes were characterized by spectroscopic(FT-IR,UV–Vis,~1H-NMR and mass spectrometry), thermal(TGA) and elemental analysis. The structures of the complexes were verified by evaluating their magnetic susceptibility and spectroscopic evidences. Synthesized complexes were studied for their catalytic activity in the Suzuki–Miyaura cross-coupling of aryl halides with phenylboronic acid. Optimized reaction yields 90% of the cyanobiphenyl for complex 1 and 91% for complex 2 with 0.1 mmol of catalyst loading thereby substantiating the C\\C coupling efficiency of the synthesized complexes, 1 and 2.Rasheeda M.Ansari Lolakshi K.Mahesh Badekai Ramachandra Bhat 2019Chinese Journal of Chemical Engineering2019,27,3:1
3巴基斯坦原发性耐多药结核病流行情况显示文摘背景:巴基斯坦是世界第6位结核病高负担国家。据世界卫生组织(WHO)估计,巴基斯坦结核病发病率为181/10万,全国每年新增结核病患者28.6万例。来自于医院的资料表明:巴基斯坦耐多药结核病(MDR-TB)问题已十分严重,急需在社区水平对耐多药结核病的严重程度开展评估。本研究为针对巴基斯坦耐药结核病流行状况开展的横段面研究,所使用的痰标本来自于巴基斯坦全国742例未经治疗的新诊断的肺结核患者。目的:评估巴基斯坦原发性耐药的流行情况结果:在672例痰培养阳性患者中,有76例(11.3%)出现了对1种或多种抗结核药物耐药。36例(5.4%)患者对链霉素(10μg/ml)耐药; 51例(7.6%)患者对异烟肼(1μg/ml)耐药;15例(2.2%)患者对利福平(5μg/ml)耐药;12例(1.8%)患者对乙胺丁醇(10μg/ml)耐药;22例(3.3%)患者对吡嗪酰胺耐药。有46例(6.8%)患者痰标本中分离的结核菌株耐1种抗结核药物, 10例(1.5%)同时耐2种抗结核药物,12例(1.8%)同时耐3种抗结核药物,6例(0.9%)同时耐4种抗结核药物,2例(0.3%)同时耐全部5种抗结核一线药。原发性耐多药率为1.8%,(n= 12)(异烟肼1μg/ml,利福平5μg/ml)。结论:研究结果表明,巴基斯坦原发性耐多药率<2%,需要进一步实施有效的DOTS策略。A.Javaid R.Hasan A.Zafar A.Ghafoor A.J.Pathan A.Rab A.Sadiq C.M.Akram I.Burki K.Shah M.Ansari N.Rizvi S.U.Khan S.R.Awan Z.A.Syed Z.H.lqbal Z.Shaheen N.ur Rehman 邢超 2008国际结核病与肺部疾病杂志2008,3,2:0
4Retraction notice to“Cobalt Schiff base complexes:Synthesis characterization and catalytic application in Suzuki-Miyaura reaction”[Chin.J.Chem.Eng.27(3)(2019)556-563]显示文摘This article has been retracted:please see Elsevier Policy on Article Withdrawal(http://gffzzf9eb861a10204708spfccknwq0p9f6nvn.ffgz.tsg.suse.edu.cn/about/our-business/policies/article-withdrawal).This article has been retracted at the request of the Editor-in-Chief of Chinese Journal of Chemical Engineering.Rasheeda M.Ansari Lolakshi K.Mahesh Badekai Ramachandra Bhat 2021Chinese Journal of Chemical Engineering2021,34,2:0
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