The paper defines choice of the optimal excavation method for ore deposits, which are characterized by general irregularity due to their origin, occurrence and different content of the usable minerals. In such complex conditions, the choice of the excavation method is defined according to: the natural characteristics of the deposit and according to...

By Slobodan Majstorović, Dražana Tošić, Duško Torbica

In the present paper we propose a new artificial neural network model for the estimation of coal cutting resistance and excavator performance as a nonlinear relationship between the examined input (excavator movement angle in the left and right direction, slice height and thickness, coal unit weight, compressive and shear strength) and output facto...

By Trivan Jelena, Srđan Kostić

The bridge's span structure comprises a connected beam designed to support a concrete slab poured over parallel steel supports. Simultaneously, segmental construction, shrinkage, and the flow of concrete play a significant role in stress redistribution over time. The span construction is statically indeterminate due to its connections with the abut...

By Anđelko Cumbo, Radomir Folić

As a result of the planned change of use, the imposed load on the existing reinforced concrete mezzanine slab will be significantly increased, wherefore a diagnostics and assessment of the current state of the structure has been carried out. The control calculation showed that the slab does not have sufficient bearing capacity for the increased loa...

By Ramona Petrov, Danica Goleš

The aim of this study was to examine the effect of different fertilizers on the yield and antioxidant capacity of two lettuce genotypes “Santoro RZ” and “Kiribati RZ”. Lettuce genotypes are fertilized with organic fertilizer (Slavol) and organic-inorganic NPK fertilizer (Fitofert hemisuper plus ) during the vegetation. The ...

By Zoranka Malešević, Aleksandra Govedarica-Lučić, Ivana Bošković, Marko Petković, Dragutin Đukić, Vesna Đurović

The main subject of this manuscript is mountain streams used by construction of small hydro power plants. The motivation for this research stemmed from a number of conflicting opinions about the justification of the construction of small hydropower plants and their facilities. This research encompasses different methods for the analysis of the just...

By Ivan Stevovic, Sabahudin Hadrović, Jovana Jovanović

The aim of the paper is to show the landslide that damaged the transmission line pole, and its remediation. The landslide is located in Tuzla, and the microlocation of the facility is located in the area of the Dolina and the settlement of Vrapče. The remediation was made on the basis of a study on the characteristics of the terrain and the design ...

By Zlatan Talić, Medina Mešić

The issues addressed in this paper are dedicated to the balancing and analysis of coal reserves for the system of underground exploitation in the Republic of Serbia, both in active mines – deposits and in prospective deposits for activation in terms of production. The basic message emphasizes the importance of coal as the leading domestic ene...

By Zorica Ivković, Dražana Tošić, Dejan Dramlić

Changes in the built environment are inevitable due to diversity in human needs over time and it is suggested by scientists to consider flexibility and adaptability under concept of Open Building Systems (OBS) to mitigate impacts on environment and to satisfy the end-user. However, conventional methods are still common due to the lack of knowledge ...

By Mostafa Hosseini, Syahrizal Ibrahim Izni, Nobahar Sadeghifam Aidin, Rahnama Hamed

Harvest residues are parts of cultivated plants that remain on the plot after harvest or grazing. Decomposition of plant residues by microorganisms involves two simultaneous processes: mineralization and humification of carbon compounds. Decomposition processes depend on the type of plant residues, edaphic factors and residue management factors. Ed...

By Novo Pržulj, Vesna Tunguz