The RTH flotation tailing dump, located in the old open pit Bor about 500 m southeast of Flotation Plant, has been continuous operational work since 1985. flotations dumps are important mining facilities that constantly changed during their exploitation period. Due to changes occurring dump its exploitation, it is necessary perform a technical and technological surveillance-auscultation order c...

In flies, 22-23-nucleotide (nt) microRNA duplexes typically contain mismatches and begin with uridine, so they bind Argonaute1 (Ago1), whereas 21-nt siRNA duplexes are perfectly paired and begin with cytidine, promoting their loading into Ago2. A subset of Drosophila endogenous siRNAs-the hairpin-derived hp-esiRNAs-are born as mismatched duplexes that often begin with uridine. These would be pr...

Gold extraction operations generate a variety of wastes requiring responsible disposal in compliance with current environmental regulations. During recent decades, increased emphasis has been placed on effluent control and treatment, in order to avoid the threat to the environment posed by toxic constituents. In many modern gold mining and ore processing operations, cyanide species are of most ...

AIMS To study the effect that copper residues exert on bacterial communities and the ability of bacteria to colonize different microhabitats in abandoned tailing dumps. METHODS AND RESULTS We used the terminal-restriction fragment length polymorphism technique, a culture-independent molecular approach based on PCR amplification of ribosomal genes, to compare the structure of the bacterial com...

The adsorption of the proton-pump inhibitor omeprazole was investigated using RP-LC with chemometric models combined with adsorption isotherm modelling to study the effect of pH and type of organic modifier (i.e., acetonitrile or methanol). The chemometric approach revealed that omeprazole was tailing with methanol and fronting with acetonitrile along with increased fronting at higher pH. The i...

In bilaterian animals the 3' ends of microRNAs (miRNAs) are frequently modified by tailing and trimming. These modifications affect miRNA-mediated gene regulation by modulating miRNA stability. Here, we analyzed data from three nonbilaterian animals: two cnidarians (Nematostella vectensis and Hydra magnipapillata) and one poriferan (Amphimedon queenslandica). Our analysis revealed that nonbilat...

Basically, water erosion is one of the most significant environmental problems in the world. The major variables affecting soil erosion are climate, soil, vegetation, and topography. Of these, vegetation and, to some extent, soil and topography may be controlled. However, for adequate intervention, reliable and representative model parameters and running conditions are necessary, which requires...

In-situ air sparging has evolved as an innovative technique for soil and groundwater remediation impacted with volatile organic compounds (VOCs), including chlorinated solvents. These may exist as non-aqueous phase liquid (NAPL) or dissolved in groundwater. This study assessed: (1) how air injection rate affects the mass removal of dissolved phase contamination, (2) the effect of induced ground...

This study deals with the impact of channel strategy and channel format selection on the manufacturer’s, the retailer’s, the e-tailer’s, and the system-wide profits. We consider the problem of one manufacturer selling one product in the market through two competing channels: a physical channel (retailer) and an internet channel (e-tailer). We assume the manufacturer uses two commonly applied co...