Mechanical activation is known to greatly influence the reactivity of fly ashes. In this paper, we report a comparative study properties alkali-activated geopolymer materials prepared using both ball-milled and attrition-milled Ball milling was carried out for 30 min 60 while attrition continuously in high-speed attritor. The surface area raw ash decreased from 4017 cm2/g 3999 3912 after ball m...

Wastewater treatment plants are one of the main sources of dissemination of antibiotic resistance genes (ARGs) into the environment. The present study was conducted to determine the prevalence and removal of ARGs in different wastewater treatment processes. A total of 36 samples from raw and final effluent of different activated sludge processes were collected and analyzed. Molecular analysis w...

INTRODUCTION Lung fibrosis, reduced lung compliance, and severe hypoxemia found in patients with acute lung injury often result in a need for the support of mechanical ventilation. High-tidal-volume mechanical ventilation can increase lung damage and fibrogeneic activity but the mechanisms regulating the interaction between high tidal volume and lung fibrosis are unclear. We hypothesized that h...

Abstract: has been investigated. It has been shown that the mechanism of leaching reaction is diffusion through the product layerand does not undergo any change as a result of mechanical activation in a wide range of experimental conditions.Leaching rate is strongly influenced by milling intensity and the effect of ball to powder mass ratio is stronger thanmilling time. Curve fitting of experim...

The paper focuses on the mechanical treatment of natural goethite,quartz and clay minerals, aiming at improving their dispersion behavior in presence different dispersants. subject research activation is change state material under action forces, whereby newly created defined as “activated”. presents tests analysis possibility applying mechanoactivation mineral surface by grinding multistage pl...

The structural and bleaching properties of nitric acid-activated Nteje clay was studied to investigate its ability to serve as an alternative to the high cost imported bleaching earth. The clay was mined, sun-dried, grinded, and reacted with different concentrations of nitric acid, ranging from 2 mol.L-1 to 15 mol.L-1. The un-activated and activated samples were characterized to study the struc...

BACKGROUND Left ventricular (LV) mechanical dyssynchrony induces regional heterogeneity of mechanical load and is an independent predictor of mortality and sudden death in heart failure (HF) patients. We tested whether dyssynchrony also induces localized disparities in the expression of proteins involved with mechanical stress, function, and arrhythmia susceptibility. METHODS AND RESULTS Elev...