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Barzegar Faeze Salehi Akram Moloodi Ahmad 《Metallurgical and Materials Transactions B》2019,50(4):1988-1996
Metallurgical and Materials Transactions B - This study investigates the effect of sintering temperature on the compression strength of nickel foams in an inert atmosphere. The nickel foams were... 相似文献
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Synthesis,characterization, and optimization of α‐Fe2O3/silica nanocomposites using homogenous precipitation method
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Faeze Tari Marzieh Shekarriz Saeed Zarrinpashne Ahmad Ruzbehani 《International Journal of Applied Ceramic Technology》2017,14(4):810-819
The purpose of this study was to systematically synthesize and characterize the high surface area 10 wt% nanocomposites of α‐Fe2O3 (hematite)/silica using a simple and economically effective homogenous precipitation (HP) route via Response Surface Method combined with Central Composite Design (CCD). Accordingly, the RSM‐CCD approach including 20 experiments was designed to investigate the effects of three factors including concentration of iron chloride solution, pH and calcinations temperature on the final surface area of α‐Fe2O3/silica nanocomposites. The optimum surface area was 373 m2/g at the condition including iron chloride concentration of 0.018 mol/L, pH=8.95, and calcination temperature of 573°C. 相似文献
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Ali Nejad EbrahimiAshkan Zolfaghari Sharak Seyyed Abbas Mousavi Faeze AghazadehAhmad Soltani 《Chemical Engineering and Processing: Process Intensification》2011,50(1):31-36
In this paper, an industrial ethylbenzene production unit has been simulated and the results are compared against five-day experimental data. According to prevailing unit condition, i.e. recycled ratio of benzene, benzene selectivity, and energy consumption, the unit is not working under its optimum conditions for minimum cost of ethylbenzene production. In the current design, high amount of benzene recycle (6:1) causes to have an additional cost due to fractionation of ethylbenzene from benzene. A new approach is proposed to modify the benzene alkylation process and reduce the unit's energy consumption. In the newly designed scheme, two double-bed alkylation reactors converted into four single-bed reactors. The amount of injected ethylene, alkylation reactors temperature, and recycled stream are regulated as adjustable parameters for the optimization of the process. In the modified process, the reflux ratio reduced to 1.87 and the benzene selectivity increased. The optimized process shows a considerable decrease in the unit's energy consumption in compare to the current process. Also, the mass fraction of ethylbenzene would reach to 99.12% of purity before entering to the transalkylation reactor for further purification. Therefore, if the presented purity is acceptable for the final application, the transalkylation reactor could be eliminated from the new design. 相似文献
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Faeze ShiraliPour Seyedeh Sara Shafiei Yeganeh Nikakhtar 《International Journal of Applied Ceramic Technology》2021,18(5):1442-1456
In this study, porous scaffolds made of polycaprolactone (PCL)/β-tricalcium phosphate (BTCP) biocomposite were fabricated for bone tissue engineering (BTE) applications. The microsphere-aggregated scaffolds were prepared with various BTCP concentrations (10wt%, 20wt%, 50wt%) by the freeze-drying method. The porosity of obtained microsphere-aggregated scaffolds with various pore sizes was 80–85%, where this value was about 70% for the PCL/BTCP (50) sample with no microsphere formation. The results indicated that adding BTCP has enhanced mechanical strength, and the mineralization of PCL/BTCP composite scaffolds has been increased compared to the pure PCL scaffolds in simulated body fluid (SBF). The adhesion and proliferation of mouse bone marrow mesenchymal stem cells (mMSCs) seeded onto PCL/BTCP scaffolds were enhanced compared to the PCL. In addition, in terms of differentiation, the incorporation of BTCP led to increasing the mineral deposition and alkaline phosphatase activity of mMSCs. The synergistic effect of using microsphere-aggregated scaffolds along with BTCP as a reinforcing agent in PCL biocomposite showed that these porous biocomposite scaffolds have the potential application in BTE. 相似文献
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Faeze Ghofrani Abhishek Pathak Reza Mohammadi Amjad Aref Qing He 《Computer-Aided Civil and Infrastructure Engineering》2020,35(2):101-115
In maintenance planning of rail track, it is imperative to assess the potential and frequency of rail defects. Although this problem has been mainly studied in the literature by either data‐driven or mechanic‐based models, in the present study a new method is proposed to account for the strengths of both approaches in a single model. The envisaged model incorporates fatigue crack growth model, through Finite Element Modeling (FEM), into Approximate Bayesian Computation (ABC) framework. The method is applied to the prediction of rail defect frequency for transverse defects obtained from a US Class I Railroad. The results of the proposed model show that inducing the mechanics of rail defects into a data‐driven model outperforms the traditional pure data‐driven models by over 20%. The outcome of this study, along with necessary future developments to broaden the scope of applicability of the method, will benefit railroad existing practice in capital and maintenance planning. 相似文献
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Parandis Daneshgar Parviz Norouzi Ali Akbar Moosavi-Movahedi Mohammad Reza Ganjali Esmael Haghshenas Faeze Dousty Mohammad Farhadi 《Journal of Applied Electrochemistry》2009,39(10):1983-1992
Two sensitive sensors for determination of curcumin (CM) were described. CM can be detected using multiwall carbon nanotube
(MWCNT)-modified electrodes and dysprosium nanowire carbon paste electrode using the technique of adsorptive stripping voltammetry
(AdSV) in stationary solution and the fast Fourier transform voltammetry at the flowing solution. Both electrodes did show
less passivation effect that occurs on the unmodified electrodes and displayed better stability and reproducibility. This
electrode enabled selective determination of CM in the presence of interfering species. Under optimized conditions, CM could
be detected over a linear range with a detection limit of 5.0 × 10−9 mol L−1 and 5.0 × 10−10 mol L−1 for the traditional square wave and fast Fourier transform square wave voltammetry (FFTSWV) with RSD between 0.2 and 0.5%.
Comparison with other reported methods showed these studies are about 100 times more sensitive than previous ones. Good selectivity
and high sensitivity obtained by Square wave voltammetry can open new possibilities of direct CM determination. 相似文献
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Catalysis Letters - A highly efficient and simple synthesis of 2,4,5-trisubstituted imidazoles has been developed using highly reusable support‐free Mn2+complex of... 相似文献
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