This paper presents method for sustainability assessment of thermal power plant unit using multi-criteria analysis with aim to create base for business decision. Seven options of possible status of thermal power plant „Kolubara A” unit No. 2 with energy indicators of sustainable development were shown. Energy indicators of sustainable development consists of sets of resource preservation, economic, environmental, and social indicators. Sustainability assessment often fails to account for social influence on energy system. Considering to this, special focus will be on social indicators, their definition, forming, and impact on multi-criteria sustainability analysis. Analysis of quality of the selected options (energy systems) in respect to sustainable development by compare of their general index of sustainability is presented. Methodology of multi-criteria analyse of thermal power plant unit can show decision makers how to find best available options when the social indicators impact is leading. The aim of this paper is to choose the criteria for the evaluation of the available options, determine the relative importance of specific criteria and present methodology of multi-criteria analysis in the decision-making process.

Coal combustion power plant Kolubara A has five thermal units with total installed capacity of 270 MW operates as a part of Public Enterprise which has planned to accept and apply the Clean Development Mechanism (new power plants on lignite and natural gas with higher energy efficiency as well as activities related to the rehabilitation and modernization of existing facilities). Two units were put in operation before more than fifty years and in order to extend the lifetime of these blocks in the process of revitalization, in this paper, beside an existing option which considers coal (lignite) combustion, are analysed possible options of thermal power units with gas and renewable energy sources: biomass, renewable solid fuels, waste materials, wind and sun. Paper presents seven energy system options of the thermal unit status which are described with suitable chosen indicators in respect to different aspects of sustainability: economical, ecological, social and resources indicators. In this paper energy indicators are defined as a tool for the sustainability assessment of energy system options. ASPID method of multi-criteria assessment was used to calculate general index of sustainability and obtained ranking of options. This study presented and analysed cases, with predefined constraints when priority has environmental indicator and different conditions where one of sub-indicators have priority, as an example of applying multi-criteria method.

In this paper the strength development of self-compacting concrete with high volume of calcareous fly ash was investigated. The ultrasonic pulse velocity was also measured and relationships between these were investigated. The results show that compressive strength of the self-compacting concrete samples decreases by increasing the fly ash content in the early period, but with increasing the age of samples the reduction of compressive strength becomes lower. The results further indicate that there is very good correlation between compressive strength and ultrasonic pulse velocity of the samples after 14 days or more.

In this paper are investigated microstructural, phase, physical and mechanical properties of mullite ceramics obtained from clay and Bayer electrofilter fines. Clay and alumina were mixed in such ratio that provides the amount of Al2O3 and SiO2 corresponding composition of mullite. One mixture was manually mixed and other was milled three hours in ceramic mill. After isostatic molding and heat treating at 1580°C and 1635°C XRD analysis revealed approximately 60% of mullite and 40% of corundum in first mixture and in second mixture 70% of mullite and 30% of corundum. Two types of mullite were observed in SEM micrographs beside corundum grains and glassy phase. The results of investigation indicate that preparation of mullite ceramics from these raw materials is possible, if clay and alumina are well homogenized and milled before molding.

The existing building stock energy consumption accounts for about 38% of final energy consumption in Republic of Serbia. 70% of that energy is consumed by residential sector, mostly for space heating. This research is addressed to the single family house building placed in the Belgrade city. The house has ground and first floor with total heating area of 130 m2 and pellet as space heating source. The aim of this paper is to evaluate energy and economic analysis for different heating systems. Several homeheating were compared: Option 1 (biomass combustion boiler using pellet as a fuel), Option 2 (gas combustion boiler) and Option 3 (heat pump). The building performance was evaluated by TRNSYS 17 simulation code. Results show estimated savings using renewable energy sources. [Projekat Ministarstva nauke Republike Srbije, br. III42008]

: Nutrition is recognised as one of the major factors that can influence the development of cancer. Heterocyclic amines formed during the cooking of meat are genotoxic carcinogens and consumption of meat positively correlates with certain types of human cancer. On the other hand, it has been reported that many plant components reduce the genotoxic activities of carcinogens, including HCAs. In this study we investigated the antigenotoxic potential of the monoterpenes linalool, myrcene and eucalyptol against two food-borne carcinogens: 2-amino-1-methyl-6-phenylimidazo[4-5- b ]pyridine (PhIP) and 2-amino-3-methylimidazo[4,5-f]-quinoline (IQ). The study was performed by the comet assay method in metabolically active HepG2 human hepatoma cells. In addition, the lipid peroxidation TBA assay was used to determine the anti-oxidative potential of these monoterpenes. To evaluate the antigenotoxic potential, cells were treated simultaneously with 0.01, 0.1 or 1 μg/mL of monoterpenes and either 90 μmol/LPhIP or 0.75 mmol/L IQ. The DNA damage induced by PhIP was reduced significantly (by 40-63%) by each of the three monoterpenes, while inhibition of IQ-induced DNA damage was less efficient (12-26% reduction) and limited to myrcene and eucalyptol. Lipid peroxidation was significantly inhibited by linalool and myrcene, with IC 50 values of approximately 30 μg/mL and 300 μg/mL, respectively. Eucalyptol showed only weak antioxidant activity (15% inhibition at 500 μg/mL). Taking into account the fact that reactive oxygen species (ROS) are formed during metabolic processing of PhIP, we assume that more efficient protection against PhIP-induced DNA damage was probably due to antioxidative activity of the monoterpenes or their metabolites, but the ability to interfere with metabolic activation of PhIP and IQ could also be involved.

Tourist destinations around the world are trying to cope with the needs of visitors which are very susceptible to change. Nowadays, tourists are becoming more sophisticated and knowledgeable, and their needs for extensive  and diverse experiences are increasing. As opposed to the destinations whose tourism development depends on the natural resources that are difficult to influence, and whose business is susceptible to the negative impacts of seasonality, destinations of city and cultural tourism have more space to design their offers and contents that can satisfy the needs of travelers of the modern age. Content that can make a destination unique and well-known, is the cultural heritage created in the Art Nouveau style. The secessionist architectural masterpieces can represent a major tourist attractions in some destinations. For example, many attractive tourist cities such as Aveiro, Barcelona, Prague and Hamburg tourists visit just in order to feel and experience these works of art. For this reason it is very important to point out Art Nouveau as an essential part of the cultural heritage of the destination and enable informing and introducing tourists with this valuable tourism potential. The initial hypothesis of this paper is that Aveiro has authentic cultural heritage in the Art Nouveau style that enriches the tourist offer of the city and that attracts a certain segment of the tourism market. Aim of the paper is to percieve the participation and influence of Art Nouveau heritage in the tourism industry of Aveiro. Keywords: Secession, Art direction, Tourism, Aveiro

Tourist destinations around the world are trying to cope with the needs of visitors, which are very susceptible to change. Nowadays, tourists are becoming more sophisticated and knowledgeable; their needs for extensive and diverse experiences increasing. As opposed to the destinations whose tourism development depends on the natural resources that are difficult to influence and whose business is susceptible to the negative impacts of seasonality, destinations of city and cultural tourism have more space to design their offers and contents that can satisfy the needs of travelers of the modern age. Content that can make a destination unique and well known, is the cultural heritage created in the Art Nouveau style. The Vienna secession architectural masterpieces can represent major tourist attractions in some destinations. For example, many attractive tourist cities such as Aveiro, Barcelona, Prague and Hamburg tourists visit just in order to feel and experience these works of art. For this reason, it is very important to point out Art Nouveau as an essential part of the cultural heritage of the destination and enable informing and introducing tourists with this valuable tourism potential. The initial hypothesis of this paper is that Aveiro has authentic cultural heritage in the Art Nouveau style that enriches the tourist offer of the city and that attracts a certain segment of the tourism market. The aim of the paper is to examine the participation and influence of Art Nouveau heritage in the tourism industry of Aveiro.

This paper presents results of investigation of possibility of use Class C fly ash in self compacting concrete (SCC) production. The results of fresh and hardened properties of SCC show that replacement of milled dolomite filler by fly ash lead to increase of SCC compressive strength, dynamic modulus of elasticity and density, while consistency of fresh SCC mixtures are not significantly changed. The results further indicate that economical benefits can be achieved by cement content reduction.