The wire electrical discharge machining (WEDM) experiments has been conducted using air and water mixture as a dielectric medium, is called environmental friendly near dry WEDM. In this technology, the dielectric fluid (Deionized water) is replaced by liquid-air to minimize the environmental impact in the machining zone and operator health. The effect of discharge current (I), Pulse width (TON)...

The optimization processes of photo degradation are complicated and expensive when it is performed with traditional methods such as one variable at a time. In this research, the condition of ortho-cresol (o-cresol) photo degradation was optimized by using a semi empirical method. First of all, the experiments were designed with four effective factors including irradiation time, pH, photo cataly...

materials and methods phe degrading bacteria were isolated from surface sediments. isolated strains were then identified by biochemical and molecular (16s rdna gene sequence) analysis. rsm was employed to evaluate the optimum biodegradation of phe by the most effective isolated strain. the investigated parameters included the temperature, inoculum sizes, ph, nh4cl concentration, and salinity. o...

This study aimed at investigating the variation of heat transfer and velocity changes fluid flow along vertical line on a surface drawn from both sides. In beginning, several parameters such as Prandtl number viscoelastic effect were evaluated for by iteration method. The results compared with numerical second part description relates to use Response method (RSM method) in Design Expert softwar...

in this study, the adsorption of 1-chloro-4-nitrobenzene (1c4nb) on carbon nanofibers (cnfs), was investigated in a batch system. the combined effects of operating parameters such as contact time, ph, initial 1c4nb concentration, and cnfs dosage on the adsorption of 1c4nb bycnfs were analyzed using response surface methodology (rsm). the analysis of variance results confirmed that there was sig...

In the field of robust design, most estimation methods for output responses input factors are based on response surface methodology (RSM), which makes several assumptions regarding data. However, these may not consistently hold in real-world industrial problems. Recent studies using artificial neural networks (ANNs) indicate that input–output relationships can be effectively estimated without m...

Rosemary (Rosmarinus officinalis L.) is a plant with needle-shaped leaves. It mainly found in Mediterranean regions (Algeria, Morocco and Tunisia). essential oil (EO) has several therapeutic virtues that were widely studied. However, the use of this EO restricted due to its sensitivity oxidation. Nanoencapsulation based on polymers been developed as one promising techniques overcome limitation....

in a robust parameter design (rpd) problem, the experimenter is interested to determine the values of con-trol factors such that responses will be robust or insensitive to variability of the noise factors. response sur-face methodology (rsm) is one of the effective methods that can be employed for this purpose. since quality of products or processes is usually evaluated through several quality ...

The extraction of catfish (Clarias gariepinus) bone gelatin was optimized by using Response Surface Methodology (RSM) involving 4-factors, 5-levels Central Composite Design (CCD). The optimum conditions for extraction were produced by a pre-treatment of 3.35% HCl for 14.5 h along with hot water extraction at 67.23°C for 5.2 h. Results showed that the predicted yield by RSM (61.81%) was closely ...

The response surface method (RSM) is one of the most common techniques for building approximation models using values of sampled data alone. In this work, a method for using both function values and their gradients with respect to the design variables in the problem and construct response surface (RS) models has been developed. This approach improves on the efficiency of using the RSM for high-...