The organizational changes on which the development of each organization is based depend on numerous factors and assumptions, but one of the most important is employee motivation

The production of fruit brandies is based on distilling fermented fruit juices. Distillation equipment is usually made of copper. In traditional manufacturing, it consists of a boiler (batch) distiller, a boiler (pot), a steam pipe, and a condenser, all of which are made of pure copper. This study determined the corrosion parameters for copper (Cu) and Cu72Zn28 (in wt%) alloy in fermented apricot juice at room temperature. The fermentation process examined in this research utilized natural strains of yeast and bacteria, supplemented by active dry yeast Saccharomyces cerevisiae strains. This research used the following methods: open circuit potential (OCP), linear polarization resistance (LPR), and Tafel extrapolation to identify corrosion parameters. Cu had a 3.8-times-lower value of corrosion current density than brass, and both were within the range of 1–10 μA·cm⁻², with an excellent agreement between LRP and Tafel. This study proved that Cu is an adequate material for the distillation of fruit brandies from a corrosion perspective. Despite this, there are occasional reports of corrosion damage from the field. Significant corrosion impacts can arise, as evidenced by laboratory tests discussed in this paper. In the absence of a highly corrosive environment, this study indicates that, to some extent, microbiologically influenced corrosion (MIC) can influence the degradation of the equipment material.

After relocation of the Ćehotina riverbed in Pljevlja, the attention is shifted to monitoring the new channel in order to ensure its stability. The regular data collection was ensured through a system of piezometers for groundwater monitoring, the water gauge profiles for the water level control, and geodetic and inclinometers observations for tracking the terrain changes. This comprehensive approach allows promptly identification any changes or potential risks and taking the appropriate measures to maintain the channel stability and minimize the environmental impact.

This paper presents a description of banana screen construction and its working principle, as well as an example of banana screen application in the process of dense media separation. In addition calculation method of one banana screen is given, based on realistic assumed parameters.

Dense medium cyclones separate particles based on their density due to centrifugal force induced by the swirling flow. They are usually used in the coal industry to separate lighter coal from denser ash, but can be used for other raw materials, such as lead-zinc ore. There are several methodologies used to select and calculate DM cyclones. This paper deals with two methods related to the selection and calculation of DM cyclone capacity on the example of lead-zinc ore preconcentration.

The depletion of high-grade, easily processable sulfide ores has forced the mining industry to exploit complex, finely disseminated, and partially oxidized deposits. Under these challenging conditions, traditional sulfhydryl collectors often exhibit poor selectivity and low recovery rates. This short review evaluates the application of chelating collectors as a highly selective technological alternative for the flotation of complex ores. Unlike conventional reagents, chelating agents act as multidentate ligands, bonding with surface metal cations through specific donor atoms (such as oxygen, nitrogen, and sulfur) to form stable, cyclic coordination complexes. The mechanism of action is fundamentally governed by chemisorption, where the steric and geometric alignment of the ligand and precise pH regulation dictate the overall selectivity against silicate gangue minerals. This paper provides a comprehensive overview of the major classes of chelating collectors, including hydroxamates, oximes, carbamates, and quinoline derivatives. Furthermore, industrial implementation strategies are discussed, emphasizing the synergistic economic and kinetic benefits of using chelating agents as co-collectors in mixed formulations with traditional xanthates or fatty acids. Finally, the review addresses environmental considerations, highlighting the superior biodegradability and lower eco-toxicity of modern chelating structures in closed-loop water systems.