This paper presents an implementation of adaptive dual current mode control (ADCMC) on non-inverting buck-boost converter. An experimental verification of the converter operation with the proposed ADCMC has been performed in steady state and during the step disturbances in the input voltage and the load resistance. The given experimental results confirm the effectiveness of the proposed control method.

: Among the greatest challenges of cloud computing is to automatically and efficiently exploit infrastructural resources in a way that minimises cloud fees without compromising the performance of resource demanding cloud applications. In this aspect the consideration of using processing nodes at the edge of the network, increases considerably the complexity of these challenges. PrEstoCloud idea encapsulates a dynamic, distributed, self-adaptive and proactively configurable architecture for processing Big Data streams. In particular, PrEstoCloud aims to combine real-time Big Data, mobile processing and cloud computing research in a unique way that entails proactiveness of cloud resources use and extension of the fog computing paradigm to the extreme edge of the network. The envisioned PrEstoCloud solution is driven by the microservices paradigm and has been structured across five different conceptual layers: i) Meta-management; ii) Control; iii) Cloud infrastructure; iv) Cloud/Edge communication and v) Devices, layers.

Cilj rada bio je ispitati kemijski sastav i pojavnost mikotoksina u tradicionalnim mesnim proizvodima (TMP) podrijetlom s domacinstava Bosne i Hercegovine. U razdoblju od 2015. do 2016., ukupno je uzorkovano 55 tradicionalnih mesnih proizvoda, od toga 25 kobasica proizvedenih od svinjskog mesa, 15 kobasica proizvedenih od mjesavine svinjskog i goveđeg mesa, 7 uzoraka pancete i 8 uzoraka prsuta. Osnovni kemijski i masno-kiselinski sastav određen je primjenom ISO metoda, dok su razine aflatoksina B1 (AFB1) i okratoksina A (OTA) određene primjenom imunoenzimskih ELISA metoda. Rezultati su pokazali varijacije u vrijednostima kemijskih parametara između TMP-a, s znacajno vecim (p < 0, 05) udjelom stearinske kiseline, te manjim udjelom linolne kiseline u kobasicama proizvedenim od mjesavine svinjskog i goveđeg mesa, u odnosu na TMP proizvedene u cijelosti od svinjetine. OTA je određen u 7 uzoraka razlicitih vrste proizvoda s najvecom koncentracijom od 6, 20 μg/kg, dok je AFB1 određen samo u jednoj kobasici od svinjskog mesa s koncentracijom neznatno vecom od limita kvantifikacije metode (1, 91 μg/kg). Utvrđena kontaminacija TMP-a mikotoksinima, posebno sa OTA, pokazuje da bi u cilju sprjecavanja kontaminacije meso i mesni proizvodi iz domacinstava trebali biti proizvedeni pod standardiziranim i dobro kontroliranim uvjetima.

The application of C-Mn steel pipe in the oil & gas industry is quite common since starting of this industry. Even with the great evolution of the metallurgy of this type of steel over the last decades, the challenge is to overcome the corrosion severity caused by sour (H2S, CO2) species present in the petroleum and its derivates. The direct technological solution would be to replace the C-Mn steel by Ni-based superalloys and/or stainless steels. However, the high costs of these materials would make several projects impracticable. In this context, there are several initiatives in order to develop overlay and/or cladding, that means, coatings of C-Mn steels using superalloys and stainless steels. In this work, it was used an overlay deposition of Inconel 625 on the surface of a C-Mn steel using the laser process. A disadvantage of laser deposition, as it is for any deposition melting process, is the formation of a microstructural discontinuity in the steel substrate caused by the thermal cycle (HAZ = heat affected zone). In this study, different heat treatment routes were investigated aiming to eliminate the HAZ preserving the original characteristics of the substrate and of the coating.