This paper presents the methodology for verification the reducer and couplings as the components of drive unit on the example of belt conveyor for ore with capacity of 2000 t/h at the open pit “Veliki Krivelj”. Analysis was done by calculation according to the manufacturer instructions of the Falk Company, and its results are indispensable for checking the reliability of functionality the drive unit components in the given operating conditions. Also, the technical characteristics of these components are given, as well as their graphical representation.

The aim of this study was to determine the polycyclic aromatic hydrocarbons (Polycyclic aromatic hydrocarbon; PAH) with a focus on benzo (a) pyrene in smoked chicken produced in controlled conditions, changing the temperature values and time at constant pressure. The technological process of thermal degradation, drying and smoking semi-dry meat products of poultry meat is done in automated thermal chambers. The current process of smoking is performed by heat treatment to make the temperature at the center of the product 72° C for 40 minutes, followed by smoke at a temperature of 65° C, to achieve certain characteristics (odor, color). First category deboned chicken meat was used for testing. It was prepared in accordance to the familiar preparing raw material procedure for process of smoking already existing process of smoking is compliant with speci€c knowledge in science as well as principles of good manufacturing practice with a special focus on the time and temperature of smoke that led to certain changes in terms of the sensory properties of smoked products like presence and said polycyclic aromatic compounds (PAHs). The product was smoked at various temperatures ranging between 52.5 and 62 °C, over 10 to 30 minutes. In determining PAH compounds (polycyclic aromatic hydrocarbons), has been allocated said benzo (a) pyrene which is an indicator of the presence of harmful substances in products. Smoked meat changed the way smoking was ranked very acceptable

Lichen is a symbiotic plant built by the cells of algae and fungi hyphae. Algae are usually presented - green (Chlorophyta) or blue green (Cyanophyta), a mushroom commonly found is ascomycetae and sometimes basidiomycetae. Mushrooms receive oxygen and carbohydrates from algae, and they in turn provide water, CO2 and mineral salts. Lichens are often found on trees and rocks in unpolluted environments and can be used as a bioindicator species. In during 2015-2016. was realized a survey of epiphytic lichen flora of the western mountains in environment of Vranje. Sampling was carried out at 4 locations: Borino brdo, Krstilovica, Markovo Kale and Pljackovica. Based on the collected and determined samples can be concluded that the study implemented of the area of 25 species of lichens of which: 8 as crust, leafy 12 and 5 shrub. The research results indicate that the lichen flora of the western mountains environments Vranje of a rich and diverse as a result of favorable geographic position, geological and soil composition, climate and plant cover that provide opportunities for the development and survival of lichens.