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Experimental Investigation on Finasteride Microparticles Formation via Gas Antisolvent Process
( Mohammad Najafi ),( Nadia Esfandiari ),( Bizhan Honarvar ),( Zahra Arab Aboosadi ) 한국화학공학회 2021 Korean Chemical Engineering Research(HWAHAK KONGHA Vol.59 No.3
Micro and nanoparticles of Finasteride were prepared by gas-antisolvent method. The influence of process parameters such as pressure (100, 130 and 160 bar), temperature (308, 318 and 328 K) and solute concentrations (10, 25 and 40 mg/ml) on mean particle size was studied by Box-Behnken design. As ANOVA results indicated, the highest influence in production of smaller particles was attributed to the pressure. Optimum condition leading to the smallest particle size was as follows: initial solute concentration, 10 mg/ml; temperature, 308 K and pressure, 160 bar. The particles were evaluated with FTIR, SEM, DLS, XRD as well as DSC. The analyses revealed a size decrease in the precipitated Finasteride particles (232.4 nm, on mean) via gas-antisolvent method, as compared to the original particles (55.6 μm).
Nader Shoaib,Zahra Arab Aboosadi,Nadia Esfandiari,Bizhan Honarvar 대한설비공학회 2020 International Journal Of Air-Conditioning and Refr Vol.28 No.1
A conditioning dehumidifier system is a simple technology to improve air quality and also reduces air conditioning costs. This experimental study evaluated the performance of a liquid desiccant system by adding copper oxide nanoparticles (NPs). The effect of operating parameters, such as inlet air humidity ratio and desiccant flow rate on air dehumidification rate, was also investigated. The desiccant solution contained 48 wt.% CaCl2 and 0.35 vol.% of CuO NPs. Comparison of liquid desiccants demonstrated a mean difference of 4.5 g/s ⋅m2 in the air dehumidification rate by solutions with and without CuO NPs.