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- 저자 : Afshin Amani (검색결과 2 건)
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Afshin Amani,Elham Jalilnejad,Seyyed Mohammad Mousavi 한국공업화학회 2018 Journal of Industrial and Engineering Chemistry Vol.59 No.-
Packed-bed reactors are widely used in biological treatment processes. The complete simulation of the reactions and concentration profiles of the reactors, which are necessary for a successful reactor design, operation, and scale-up, are now possible due to extensive improvements of numerical methods and computational power. In the present work, phenol biodegradation was studied in a packed-bed bioreactor operating in the recycling batch mode using the computational fluid dynamics (CFD) method. A transient comprehensive 3D CFD was developed to simulate the dynamic behavior of batch phenol biodegradation by Ralstonia eutropha in a Kissiris-immobilized cell bioreactor. The model combined the porous medium CFD model with two kinetic equations, namely the Haldane and Luong inhibition models, to consider the inhibitory effect of phenol at high concentrations. The simulation results of the phenol concentration variation in different initial phenol concentrations (2.13, 4.26, 6.39, and 8.52 mol/m3) and recirculation flow rates (10, 25, and 40 ml/min) were validated against experimental data. Despite the assumptions, the simulation results create an acceptable assurance of the simulation precision with good agreement with experimental data.
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Epidemiology of Childhood Cancer in Northwest Iran
Fathi, Afshin,Amani, Firouz,Bahadoram, Mohammad Asian Pacific Journal of Cancer Prevention 2015 Asian Pacific journal of cancer prevention Vol.16 No.13
This case series study was performed for all 83 children below 14 years old suffering from cancer during 2010-2013 who were registered in Ardabil pediatric cancer registry (APCR). The required data were collected by questionnaire and analyzed with SPSS.19 statistical methods software. Some 51 (61.4%) of cases were male. The mean age of patients was 5.8 years. Of the total, 60 (72.3%) of cases were from urban areas. Results showed that leukemia with 54.2%, CNS with 12% and neuroblastoma with 8.4% were the most prevalent childhood malignancies in Ardabil province. Based on the under 14 year old population estimated from Ardabil province, the cumulative incidence rate was 95.4 patients per one million. The incidence rate was relatively high so that childhood cancers should be considered as an important issue in health policy making in Ardabil province of Iran.
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