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This paper presents a comparative analysis of microstructural parameters by the powder X-ray diffraction method on a polycrystalline sample and the fractal analysis. The presented results of microstructural parameters are obtained by crystallographic programs FullProf based on the Rietveld method. The synthetic Ba/Ca-celsian sample has been used for microstructural parameters analysis. The feldspar sample has been synthesized by the thermal induction phase transformation process of ion exchange Ca-LTA zeolite with Ba cation. After the ion exchange Ba/Ca-LTA, the sample was heated at the temperature of 1300°C and the structure of Ba/Ca-feldspar was determined by the X-ray powder diffraction analysis. The X and U shape parameters that contribute to the strain have been reconstructed by fractal interpolation. Once we can reconstruct the shapes, which are quantum mechanics effects, we should provide the data for predicting desired parameters mentioned previously. We reported in this paper the successful application of this advanced and deep microstructure analysis, which confirmed original fractal copies based on the presented morphology characterization.

The purpose of the research is to acquaint the domestic scientific, professional and general public with the prospects for the production , placement and consumption of soybeans and soybean products, as well as with the effects that such production can have on the development of the domestic (agricultural) economy. The task of the research is to provide information that is still insufficiently researched and sorely undefined in our country. The main aim of this paper is to give theoretical and practical contribution to defining a long-term development strategy on the soybean market in the Republic of Serbia, as well as to provide basic guidelines for soybean producers for the optimization of their activities. In order to provide support to the domestic agricultural and food industry, as the main pillars of sustainable protein supply, certain facts, opinions, motives, experiences and attitudes of soybean producers will be examined and specified, aiming to determine the relevant elements that are important for the improvement of soybean production on registered agricultural farms. In accordance with the methodology of scientific research work, the obtained results will be collected, processed and presented.

It is very important to determine microstructure parameters of consolidated ceramic samples, because it opens new frontiers for further microelectronics miniaturization and integrations. Therefore, controlling, predicting and designing the ceramic materials’ properties are the objectives in ceramic materials consolidating process, within the science of sintering. In order to calculate the precise values of desired microstructure parameter at the level of the grains’ coating layers based on the measurements on the bulk samples, we applied the artificial neural networks, as a powerful mathematical tool for mapping input-output data. Input signals are propagated forward, as well as the adjustable coefficients that contribute the calculated output signal, denoted as error, which is propagated backwards and replaced by examined parameter. In our previous research, we used neural networks to calculate different electrophysical parameters at the nano level of the grain boundary, like relative capacitance, breakdown voltage or tangent loss, and now we extend the research on sintered material’s density calculation. Errors on the network output were substituted by different consolidated samples density values measured on the bulk, thus enabling the calculation of precise material’s density values between the layers. We performed the neural network theoretical experiments for different number of neurons in hidden layers, according to experimental ceramics material’s density of ρ=5.4x103[kg/m3], but it opens the possibility for neural networks application within other density values, as well.

In this study, microstructure evolution and dielectric properties of SrTiO3 ceramic have been investigated, whereby mechanical activation of SrTiO3 powders was used to modify the functional properties of ceramic materials. Microstructural SEM analysis of SrTiO3 ceramics showed that the increase in mechanical activation time results in less porous samples. Raman spectroscopy indicated changes in the broadening and asymmetry of the TO2 mode with a change in the time of mechanical activation. TO2 mode showed a Fano asymmetry due to its interaction with polarization fluctuations in polar micro-regions, which are a consequence of the presence of oxygen vacancies caused by activation. The maximum value of dielectric permittivity was observed in the sample activated for 10 min. Also, the sample activated for 10 min exhibits relatively low values of loss tangent, compared to the other mechanically activated samples, providing the best overall dielectric performance compared to other samples.

Fresh fruit and vegetables contribute to almost 50% of food wasted by households in the EU. To understand the main reasons for wasteful behaviour among the consumers in Vojvodina (Serbia) cross-sectional data were collected through a self-administrated online survey of 711 correspondents. The questions presented in the study focused on the method of preserving the fruits and vegetables in domestic conditions before their consumption. Self-estimation of wasteful behaviour in the household and socio-demographic factors, including the respondents' self-estimated health status, were analysed using the correspondence analysis. The results showed that the first two dimensions explained for 95.06% of the total per cent of inertia (statistically significant at p

Although regular intake of fruits and vegetables has an essential role in a healthy diet and well-being, a majority of consumers in Serbia have a suboptimal intake of these groceries. To understand the main determinants of this unsatisfactory situation, the study tested an extended model of the theory of planned behavior intending to suggest necessary steps for improving fruits and vegetables daily intake. This theory, extended for the role of knowledge, was tested using structural equation modeling. Fit indices confirmed the utility of this extended model of the theory of planned behavior in explaining consumers' behavior as well as the mediating role of behavioral intentions. Serbia, as one of the central developing countries in the Balkans, was chosen to test the model with the possibility of applying it to other developing countries facing malnutrition. Data were collected in North Serbia, through an online survey (n=688). Despite consumers' high awareness of fruits and vegetables' beneficial health effects, the influence of consumers' knowledge only is not sufficient to trigger behavioral changes. Consumers' intentions and behavior should be influenced indirectly, by changing their attitudes and subjective norms. All custom-made activities promoting a higher fruit and vegetable intake should consider the present findings to achieve a bigger effect on behavioral changes among consumers.

The aim of this paper is to analyze the current state and the achieved development of organic production in the countries of the region and the Republic of Serbia. The Republic of Serbia has significant potential for production of organic food, mostly due to its favourable climatic conditions. The comparative analysis in this paper includes the analysis of the areas under organic production, the number of organic producers and the development of organic food markets. Starting from the fact that organic production is still not sufficient in the countries of the region, the aim of this paper is to determine the prospects of organic production and appropriate measures to be taken in order to intensify this type of production in the Republic of Serbia and the neighbouring countries.

The subject of this research is an analysis of the export of processed vegetables from the Republic of Serbia in the period 2014-2018. The purpose of the research is to examine the actual trends in the export of processed vegetables from Serbia in the period under consideration relative to the volume, value and destination of the export. The average export of processed vegetables from the Republic of Serbia amounted to 22.607 tons per year, indicating a moderate increase at an average annual rate of 3.86 %. Compared to fresh and frozen vegetables, processed vegetables claimed the smallest share in the total Serbian export structure (accounting for 13.8 %). The average export value of processed vegetables was $47.3 million. From the value perspective, processed vegetables accounted for 35.6 % of the Serbian vegetable export value, which is far more significant than the export volume share of processed vegetables.

One-dimensional (1D) TiO2 nanotubes perpendicular to the substrate were obtained by electrochemical oxidation of titanium foil in an acid electrolyte. In order to alter the crystallinity and the morphology of films the as-anodized amorphous TiO2 nanotube films were sintered at elevated temperatures. The evolution of the morphology was visualized via scanning electron microscopy (SEM), while the crystalline structure was investigated by X-ray diffraction (XRD) and Raman spectroscopy. The chemical composition was studied by X-ray photoelectron spectroscopy (XPS). The effects of crystallinity and morphology of TiO2 nanotube (NTs) films on photocatalytic degradation of methyl orange (MO) in an aqueous solution under UV light irradiation were also investigated. The TiO2 nanotubes sintered at 650°C for 30 min had the highest degree of crystallinity and exhibited the best photocatalytic activity among the studied TiO2 nanotube films. [Project of the Serbian Ministry of Education, Science and Technological Development, Grant no. OI 172057 and Grant no. III 45019]

The main goal of research in this paper was to consider basic trends in vegetable production in the Republic of Serbia for the period 2000-2009. Additionally, the task was to quantify of all changes, as well as to determine the factors that affected expressed production trends in Serbia. Authors point out the basic problems, suggesting both the necessary measures that would affect production increase and possible development of this very important branch of agriculture for Serbia. Also, the importance and possibilities of safe vegetables production in the system of organic agriculture are pointed out. With adequate support regarding credits, investments and export, vegetable production may become a significant sector of Serbian agriculture.

Cabbage is harvested when heads become firm and mature. Delay in harvest for several days, past the point of technological maturity, may lead to head cracking and occurrence of diseases. Only well-formed and tightly packed heads are harvested. Cabbage is harvested once or two times, at the stage of full technological maturity. Cabbage heads can be picked by hand, or the harvest is semi-mechanized or fully mechanized. Plants with incompletely packed head at the time of the last harvest significantly reduce yield performance. A breeding objective is to obtain plants that manage to pack their heads in shortest possible time, which enables mechanized harvest. Careful harvest is the main prerequisite for a good and long storage of cabbage heads. .

In this paper, the authors are examining the price parity between chosen inputs (mineral fertilizer and fuel) and basic agricultural products (wheat, maize, sunflower, sugar beat and soybean) in the Republic of Serbia. They are indicating that prices of inputs grow faster than prices of agricultural products. This leads to disbalance in parities, harming the basic agricultural products. There are significant deviations comparing to optimally defined parities. Consequences of price parities disbalance are visible in decline of accumulative and reproduction ability of primary agricultural production. Shown disbalance is manifested in insufficient accumulation and absence of investments in, before all, agricultural mechanization. .