Abstract This paper presents a numerical study on the effects of microwave irradiation mechanical properties hard rock. More specifically, weakening effect heating induced damage uniaxial compressive and tensile strength granite-like rock is numerically evaluated. Rock fracture modelled by means damage-viscoplasticity model with separate variables for failure types. We develop global solution s...

The present study aimed to assess the protective effects of aqueous extract from Morinda officinalis F. C. How on microwave-induced reproductive impairment in male rats. Microwave exposure injury was induced by exposure of 900 MHz microwaves at 218 μm/cm(2)radiation densities, 24 hours/day for 10 days. Male Sprague-Dawley rats were randomized to: normal control, microwave exposure model, or wat...

Given the shortage of zinc resource, low utilisation efficiency secondary and crucial problem that synchronous dissolution from different mineral phases, an activation pretreatment method merged with calcium microwave heating approach was proposed to enhance leaching complex encapsulated zinc-containing metallurgical residues (ZMR). Results indicated under optimal conditions, including temperat...

banana samples were purchased from a local market in sabzevar located at northeast of iran. then samples stored at refrigerator between 5–10oc during experiments, for prevention of chilling injury, 36 samples at three replications were prepared so as bananas were peeled and sliced with a sharp knife at three thicknesses (3, 5 and 10 mm) and then treated by three pretreatment methods (t1: chemic...

Ethanol production strategy was studied using multiple strain microbes from microwave irradiation (MI) pretreated sago waste. Sago waste (SW) was MI-pretreated for reducing sugars production using 2 heating media (water and sulfuric acid) under pretreatment conditions including MI power, pretreatment duration, and solid loading. When water was used, the pretreatment parameters were optimized us...

Physical vapor deposited nickel catalyst layers of 10, 50, 100, 200, 350, and 500  were granulated using hydrogen plasma for varying times to determine an effective carbon nanotube (CNT) growth process using microwave plasma enhanced CVD (MPECVD). Nickel was deposited via sputtering or evaporation. The catalyst granule size, density, and resulting CNTs were analyzed. Sputtered nickel of 50  w...

In this article, the efficiency of microwave pretreatment, which is an environmentally friendly, low-energy consuming method for recovery from refractory gold-silver ores, was investigated. The ore sample belonged to oxidized Bolkardağ deposit, contains carbonate (calcite, dolomite, smithsonite, hydrozincite), silicate (quartz, hemimorphite), sulfate (beudantite, plumbo-jarosite), and iron oxy/...

The combined microwave-assisted sorting and comminution of minerals has been proposed to reduce the huge grinding energy consumption in mineral processing. However, gangue would be discarded after process despite microwave absorbed during their treatment. Therefore, this paper investigates effect pretreatment on Bond work index (BWI) quartz calcite samples, as they represent dominant gangues ma...