A hydrothermal method for preparation of nano-size zirconia has been studied to optimize the effective parameters (precursor concentration, temperature and time) using response surface methodology (RSM). The synthesized zirconia samples were characterized through X-ray diffraction (XRD), scanning electron microscope (SEM) and transmission electron microscopy (TEM) analyses to identify mean nano...

the present study concentrates on the synthesis of au nanoparticles (aunps) using aqueous solution of polyvinylpyrrolidone (pvp) and tetrachloroaurate by different methods as thermal, sonochemical and electrochemical reduction. the pvp has been used as a reducing agent and acts as a stabilizer for au nano particles that obtained as principal product. in all synthesis procedures, the active radi...

In recent years, the fascinating range of Response surface methodology (RSM) applications has captured interest many researchers and engineers worldwide. RSM is entirely based on well-known regression principles variance analysis that enable user to improve, develop optimize process or product under study. An overview theoretical RSM, experimental strategy its tools components, along with pros ...

Proses suplementasi akan menambah nilai manfaat pada produk akhir. Komposisi bahan yang tepat memberikan kelebihan proses produksi, ekonomi, dan penerimaan konsumen. Tujuan dari penelitian ini adalah untuk mengoptimasi formula yogurt ditambahkan dengan bawang hitam. Variabel bebas diamati konsentrasi gelatin, skim ekstrak Bawang hitam digunakan non fermentasi terfermentasi. Optimasi formulasi d...

Abstract:With glucose as the starting material, sodium tripolyphosphate as the phosphorus acylating agent, and urea as the catalyst, glucose 1-phosphate was synthesized and its properties were analyzed. The synthesis conditions were selected according to the phosphorus content and optimized through the response surface methodology (RSM), based on a 3-level, 3-variable Box–Behnken experimental d...

Experiment Design – Response Surface Methodology (RSM) is used to model and to optimize the activation of Methane (C1) using Ethane (C2) as co-reactant into higher hydrocarbons, over Zn-containing zeolite catalyst. The application of this methodology in this work, allows a better understanding of the influence of the different factors; on two responses simultaneously: C1 Conversion and Aromatic...

Response surface methodology (RSM) based on central composite rotatable design (CCRD) was used to optimize the three important reaction variables-methanol/oil molar ratio (M), NaOH catalyst concentration (C) and reaction time (T) for transesterification of crude cottonseed oil under ultrasonic irradiation. A quadratic polynomial model was obtained to predict the methyl ester yield. 98 wt% of th...