308 research outputs found

    Shaping workplace safety in the metallurgical industry

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    Shaping workplace safety is determined by the organization of work in a way that does not endanger the employee during its performance. It consists of such aspects as occupational risk assessment and determination of the workload, as well as its impact on the employee. At workstations in the metallurgical industry, activities are performed in conditions harmful to health, hence the article presents the results of the workload assessment related to the physical load on employees at selected workplaces in the metallurgical industry. The occupational risk was also estimated and corrective actions were indicated to increase work safety

    Environmental failure mode and effects analysis (FMEA) – a new approach to methodology

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    The purpose of this paper is to present a concept of FMEA analysis for environmental aspects, together with a discussion of the importance, implementation and application of the proposed concept. The analyses and the developed E-FMEA methodology have resulted in a proposal of management tools for manufacturing processes

    Corrosion properties of electrodeposited Cu/Co multilayers

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    The paper presents the results of corrosion resistance of Cu/Co multilayer systems fabricated by using the electrolytic method. The systems obtained were composed of layers differing in number and thickness, which was determined by observing the cross-sections of the samples using scanning electron microscopy (SEM). The measurements of multilayer system corrosion properties carried out in 3,5 % NaCl solution showed different corrosion resistance depending on system thickness. The microscopic observations revealed the effect of the aggressive environment on the Cu/Co multilayer systems manufactured, adopting various forms of corrosion degradation

    Preparation and selected properties of Al88Y8-xFe4+x (x = 0, 1, 2 at. %) Alloys in bulk form

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    The paper presents selected properties of AlYFe rapidly solidified alloys. Samples in the form of plates, obtained by pressure casting method, were subjected to structural tests in order to determine the mechanical properties of the alloys, as well as their corrosion resistance. The corrosion resistance of samples was examined using polarization tests in 3,5 % NaCl solution at 25 °C. The influence of this corrosive medium on the sample’s surface was analyzed with microscopic observations and energy-dispersive spectroscopy (EDS). The mechanical properties of alloys were determined by Vickers hardness tests. The results showed that the properties of Al88Y8-xFe4+x (x = 0, 1, 2 at. %) alloys are related to changes in the content of alloying elements

    Fabrication and selected properties of multilayer Fe/Cu systems

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    The paper presents investigation results of the structure and selected physical properties of multilayer systems obtained by the electrolysis method. The obtained samples compose of 20 alternate layers of Fe/Cu with the following single layer thicknesses: 50 nm and 100 nm. The multilayer Fe/Cu systems for electromagnetic field shielding are characterized by relatively good quality. On the basis of topographical tests, no major defects have been found. As a result of magnetic studies, it has been found that the samples are magnetically soft materials

    Preparation and selected properties of Al88Y8-xFe4+x (x = 0, 1, 2 at. %) Alloys in bulk form

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    The paper presents selected properties of AlYFe rapidly solidified alloys. Samples in the form of plates, obtained by pressure casting method, were subjected to structural tests in order to determine the mechanical properties of the alloys, as well as their corrosion resistance. The corrosion resistance of samples was examined using polarization tests in 3,5 % NaCl solution at 25 °C. The influence of this corrosive medium on the sample’s surface was analyzed with microscopic observations and energy-dispersive spectroscopy (EDS). The mechanical properties of alloys were determined by Vickers hardness tests. The results showed that the properties of Al88Y8-xFe4+x (x = 0, 1, 2 at. %) alloys are related to changes in the content of alloying elements

    Comparison of the functional properties of selected multilayer systems

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    Electrodeposition of multilayers continues to grow and diversify. Research is still underway on the adaptation of multilayer systems to new applications in various industries. Cu/Ni multilayers are still very commonly used for practical purposes. In this work, the functional properties of selected multilayer systems with different layers quantity and thicknesses in nanoscale were investigated. The Cu and Ni layers were electrolytically deposited on a low carbon steel substrate and obtained systems were subjected to structural and anticorrosion properties study. The electrochemical parameters were determined by potentiodynamic method and the surface evaluation of the systems after corrosion tests was also carried out

    Turning to God in the Face of Ostracism: Effects of Social Exclusion on Religiousness

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    The present research proposes that individuals who are socially excluded can turn to religion to cope with the experience. Empirical studies conducted to test this hypothesis consistently found that socially excluded persons reported (a) significantly higher levels of religious affiliation (Studies 1, 2, and 4) and (b) stronger intentions to engage in religious behaviors (Study 2) than comparable, nonexcluded individuals. Direct support for the stress-buffering function of religiousness was also found, with a religious prime reducing the aggression-eliciting effects of consequent social rejection (Study 5). These effects were observed in both Christian and Muslim samples, revealing that turning to religion can be a powerful coping response when dealing with social rejection. Theoretical and practical implications of these findings are discussed
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