: Surface roughness during electrical discharge machining (EDM)was determined, inwhich material is removed by thermo-electric process due to the occurrence of successive dischargebetween workpiece and electrode. Box-Behnken design (BBD) involving four parameters dischargecurrent (I), Pulse ON time (PON), OFF (POFF) andGap voltage, with three levels wasemployed minimize surface roughness. Other ...

Aegle marmelos is a medicinal herb that has variety of biological constituents. “Catechins” are class phenolic compounds have therapeutic value. The present study employs batch extraction with methanol as solvent to extract the catechins from pulp fruit. Box–Behnken design response surface methodology (RSM-BBD) used optimize operational parameters impacting catechin extraction, such concentrati...

Aiming at the difficulty of temperature control in laser cladding process high-temperature nickel-based alloys, influence parameters on molten pool, and quality layer were explored. Firstly, through analysis finite element method, Inconel718 single-pass model was established surface 45 steel by using parametric language life–death technology, different power scanning speed pool center explored,...

PURPOSE The aim of this research was to develop and optimize a process for obtaining poly ɛ-caprolactone (PCL) nanoparticles loaded with Uncaria tomentosa (UT) extract. METHODS Nanoparticles were produced by the oil-in-water emulsion solvent evaporation method. Preliminary experiments determined the initial conditions of the organic phase (OP) and of the aqueous phase (AP) that would be utili...

The removal of copper ions from aqueous solutions using bean shells as an adsorbent is presented in this paper. influence the solution pH on biosorption capacity was investigated. increased with increase pH. pseudo-second order kinetic model showed best agreement analyzed experimental data, indicating that chemisorption could be a possible way binding to surface shells. Langmuir isotherm fitted...

this study a novel high performance liquid chromatography for the assay of nystatin in oral and vaginal tablets were optimized and validated using box–behnken experimental design. the method was performed in the isocratic mode on a rp-18 column (30 °c) using a mobile phase consisting of 0.05 m ammonium acetate buffer/ methanol mixture (30:70) and a flow-rate of 1.0 ml/min. the method was valida...

A green strategy and cost-effective approach was adapted to prepare Zinc oxide quantum dots (ZnO QDs) for biomedical applications. The prepared ZnO QDs may hold great promise as sensing scanners diagnostics therapy, demonstrated in our current study. sulfate, Azadirachta indica, Aloe vera gel Catharanthus roseus leaves extract were used synthesize a novel natural bionanocomposite BC) precursor ...

The use of ashes derived from various waste sources as supplements to synthesized ceramic reinforcement in metal matrices has been established. However, studies involving a combination particulates three different are rare. In bid further knowledge this aspect research and develop green aluminium composite for automobile applications, the present investigation studied implication adding palm ke...

The synthesis of fatty acid ethyl ester from chicken fat waste using ZnO/SiO2 heterogeneous catalyst was carried out using two-step procedures of acid pretreatment by esterification and transesterification of the pretreated oil. The first step reduces the high free fatty acid in the oil to an acceptable level for transesterification using concentrated sulphuric acid at a temperature of 60 oC du...

an efficient method was employed for the ash and pyrite sulphur removal from bitumen using column flotation process. the bitumen samples containing 9.6% sulphur (6.81% in the pyrite sulphur form) and 26.4% ash were successfully showed up to 75.20% of pyrite sulphur (e.g.; 51.66% of total sulphur) and 70.81% of ash removal. the box-behnken design (bbd) was employed to design the experiments, to ...