Resveratrol concentration in ‘Vranac‘ wines

Red wine is the main source of resveratrol. It occurs in both, isomeric (trans- and cis-) and in its glucosides forms. The grapevine variety, climate, conditions and duration of wine storage, and phytosanitary conditions of grape are some of the factors  that influence content of resveratrol. This study analyzed trans- and cis-resveratrol isomers concentrations and trans-resveratrol-3-O-glucoside and cis-resveratrol-3-O-glucoside concentrations among three clone candidates and population of autochthonous Montenegrin grapevine variety ‘Vranac’. Data from period of three years were collected and analyzed with UPLC-MS/MS. Results showed no statistically significant difference (p = 0.169) in concentration of resveratrol among three clone candidates and population of grapevine variety ‘Vranac’

Meron ground states of quantum Hall droplets

We argue that topological meron excitations, which are in a strong coupling phase (bound in pairs) in infinite quantum Hall ferromagnets, become deconfined in finite size quantum Hall systems. Although effectively for larger systems meron energy grows with the size of the system, when gyromagnetic ratio is small meron becomes the lowest lying state of a quantum Hall droplet. This comes as a consequence of the many-body correlations built in the meron construction that minimize the interaction energy. We demonstrate this by using mean field ansatzes for meron wave function. The ansatzes will enable us to consider much larger system sizes than in the previous work [A. Petkovic and M.V. Milovanovic, PRL 98, 066808 (2007)], where fractionalization into merons was introduced.Comment: 6 pages, 6 figure

Efekti različitih tehnologija držanja na dobrobit prasadi u odgoju

During two consecutive years the effects of introduction of new technology i.e. boxes of new dimensions in rearing of piglets compared to conventional type of boxes, on animal welfare through production results were investigated and economical parameters relating to introduction of investigated technology in rearing piglets. Research was carried out on experimental pig farm of the Institute for Animal Husbandry, Belgrade-Zemun, Serbia. Obtained results demonstrated that introduction of new box, with 14 instead of 6 heads per box, influenced increase in gain by 7,9%, higher feed consumption by 6,7% and better feed conversion by 0,9% compared to production results in control group housed in conventional cages. In the structure of expenses, due to higher share of cost of material in total costs, also relative equal reduction of share of labour and depreciation costs for buildings and equipment, but also regardless of that, since cost of material is directly correlated to the production value, mentioned change can be characterized as positive, therefore by application of the new technology of piglet housing the amount of total cost decreased by over 7%, and in general total positive financial effect of 10,6% can be considered as very satisfactory. In general, obtained results showed that by application of new technology of piglet housing positive effects are achieved in regard to production and financial results, and also to welfare of this category of pigs.Tokom dve uzastopne godine istraživani su efekti uvođenja nove tehnologije odnosno boksa novih dimenzija u odgoju prasadi u poređenju sa klasičnim starim tipom boksa, na dobrobit životinja preko proizvodnih rezultata i ekonomske pokazatelje uvođenje ispitivane tehnologije kod prasadi u odgoju. Istraživanja su izvedena na eksperimentalnoj farmi svinja Instituta za stočarstvo, Beograd-Zemun u Srbiji. Dobijeni rezultati su pokazali da je uvođenje novog boksa, sa 14 u odnosu na 6 grla u boksu, imalo efekte izražene boljim prirastom za 7,9%, većom konzumacjom hrane za 6,7% i povoljnijom konverzijom hrane za 0,9% u poređenju proizvodnim rezultatima kod kontrolne grupe držane u klasičnim kavezima. U strukturi troškova većim udelom troškova materijala u ukupnim troškovima, zbog relativno ravnomernog smanjenja udela troškova zarada i troškova amortizacije objekata i opreme, i bez obzira na to, budući da utrošak materijala ima direktnu korelaciju sa vrednosti proizvodnje navedenu promenu je moguće okarakterisati kao pozitivnu tako da se primenom nove tehnologije držanja prasadi iznos ukupnih troškova smanjio za preko 7%, te se u celini ostvareni ukupan pozitivan finansijski rezultat od 10,6% može tumačiti kao veoma zadovoljavajući, U celini dobijeni rezultati su pokazali da se primenom nove tehnologije držanja prasadi u odgoju ostvaruju pozitivni efekti na proizvodne i finansijske rezultate a time i na dobrobit kod ove kategorije svinja

Genetic Variability in Different Lucerne (\u3cem\u3eMedicago Sativa\u3c/em\u3e) Genotypes

One of the basic goals of modern lucerne breeding programmes is creation of new cultivars with a great potential for high quality and stable yields of both forage and hay (Riday & Brummer, 2002). Such cultivars meet increased needs of animal husbandry and must contribute to diverse farming systems (Luki , 2000). Our trial was aimed at determining genetic variability of yield components in 7 lucerne genotypes, as well as at evaluation of their breeding potential as gene donors to new lucerne cultivar

Implementation of GIS technologies in assessment and protection of natural values of Tara National Park

Mount Tara is among the most important centers of Balkan and European ecosystem and species biodiversity. It is characterized by diversified and well-maintained communities of old deciduous and mixed coniferous forests (beech/fir/spruce). They represent a unique example of well preserved forests in SE Europe with numerous endemic and relict species of indigenous flora and fauna. The geographical information system (GIS) that we have created has proved an excellent tool for valorization and protection of all natural values and potentials of Tara National Park.Geografski informacioni sistem je: organizovan skup računarskog hardvera softvera, geografskih podataka i kadra, dizajniran da efikasno prikuplja smešta, nadgrađuje, manipuliše, analizira i prikazuje sve forme geografski referencirane informacije. Za ekologe GIS je otvorio nove mogućnosti za istraživanja i aplikaciju sakupljenih informacija. Zbog same kompleksnosti sistema životne sredine mi najčešće nastojimo da ih proučavamo koristeći redukcionistički pristup, fokusirajući ce na male, diskretne pojednostavljene aspekte. Međutim većina problema u životnoj sredini su više faktorijalni i zahtevaju razmatranje širokog spektra izvora informacija pitanja i interesa. Za većinu ekoloških studija potrebne su nam eksplicitnije i kvalifikovanije terenske informacije vezane za faktore koji bi mogli da objasne posmatranu ekosistemsku, faunističku i florističku raznovrsnost u dimenziji prostorne i vremenske distribucije uključujući i podatke o geologiji, klimi, pedologiji, distribuciji i ponašanju istrživanih vrsta. Ovde svoju ulogu pronalaze geografski informacioni sistemi (GIS). Nacionalni park Tara obuhvata najveći deo planine Tare u zapadnoj Srbiji prosečne nadmorske visine 1000-1200 m na 180 km od Beograda. Ukupna površina zaštićenog područja Nacionalnog parka je 19.175 ha, a 37.584 ha predstavlja zaštitnu zonu oko Nacionalnog parka. Pripada opštini Bajina Bašta. Planina Tara predstavlja jednu od vrućih tačaka specijskog i ekosistemskog diverziteta sa 35 različitih šumskih zajednica lišćarskog, mešovito četinarskog tipa, kao i 19 opisanih livadskih zajednica. Mnoge od njih posebno one sa Pančićevom omorikom, imaju reliktan ili endemoreliktan karakter. U tom smislu sasvim je opravdano što se Tara danas našla na listi područja značajnih za očuvanje ptičijeg sveta (IBA) i dnevnih leptira Evrope (PBA), a u toku je njeno uključivanje u međunarodnu listu područja značajnog za očuvanje svetske flore (IPA). Kako se gazdovanje i upravljanje praktično svim prirodnim potencijalima NP Tara, do sada dominantno zasnivalo na principima šumarske tehnologije i inženjeringa ovaj rad ima svoju punu naučnu opravdanost u pokušaju implementacije savremenih naučnih saznanja iz oblasti zaštite biodiverziteta, konzervacione ekologije geografije i prostornog planiranja u mehanizam upravljanja prirodnim nacionalnim resursima. Ovaj tip vrednovanja i zaštite otvara mogućnost primene održivog/usklađenog korišćenja resursa NP Tara. Tokom 2002. i 2003. godine formirane su teme GIS NP Tara koje obuhvataju prirodne (geomorfologija, geologija, pedologija, hidrologija, vegetacija, flora fauna), korišćene (eksploatacija šuma) i veštačke (antropogene) sadržaje (puteve, brane, naselja, turističke sadržaje i granice). Geografski informacioni sistem koji je formiran za NP Taru sa temama koje ga čine da prati okvire sličnih projekata rađenih u Evropi i svetu i jedan je od tipičnih geografskih informacionih sistema (iz oblasti ekologije, zaštite životne sredine, šumarstva, itd), koji sadrži gotovo sve vrste podataka (izuzev satelitskih snimaka) u GIS (rasterske, vektorske, DEM, baza podataka i aerofotogrametrijske snimke).Projekat ministarstv

Legislative framework of nuclear security in the Republic of Serbia

The paper presents the concept and characteristics of nuclear security, the elements of the nu- clear safety strategy, the legislative framework and the most important solutions from the Law on Radiation and Nuclear Safety and Security. At the international level, the most important entity in this field is the International Atomic Energy Agency, while at the national level, most important is the Directorate for Radiation and Nuclear Safety and Security of Serbia. An important role is played by the Vinča Institute of Nuclear Sciences as the most referential scientific institution in this field, as well as the operational bodies - Nuclear Facilities of Serbia, the Ministry of Internal Affairs, Ministry of Defence, and the Serbian Armed Forces. Engagement of these bodies is carried out in regular peacetime circumstances, emergency situations and wartime. The most important challenges, risks and threats to nuclear security of Serbia were pointed out as well as the need to harmonize norms, procedures and processes in purpose of the strengthening institutional mechanisms in the field of nuclear security

Distribution of Craniofacial Variables in South Dalmatian and Middle Croatian Populations

The objective of the present work was to determine some relevant craniofacial parameters, particularly in relation to sex, for the study of the distribution of basic head and face types, and to investigate craniofacial and morphological differences between two population samples. The study sample comprised 100 subjects of both sex aged 18 to 30 from South Dalmatia and 200 subjects from Middle Croatia. Eight basic craniofacial variables were measured to obtain head, forehead and face indexes. The data indicate that average values of all variables can be used as standard craniofacial parameters for the examined population groups. All the craniofacial variables are considerably higher in men than in women (p < 0.05). In the South Dalmatian population mesocephalia (48.0%) and leptoprosopia (82.0%) prevail, while in the Middle Croatian population the brachycephalia (62.0%), and euriprosopia (73.5%) are present to a greater degree. The most significant craniofacial and morphological differences between the examined study samples are head width (Eu–Eu), face width (Zy–Zy), and forehead height (Tr–N). They were found to be statistically significant in the examined Middle Croatian population (p < 0.05). The presented measurements are highly relevant to orthodontic diagnostics and therapy

Kvalitet svinjskih trupova na liniji klanja, prema prethodnom i tekućem pravilniku EU

Investigation was carried out on 135 pig carcasses/carcass sides of both sexes, in several slaughterhouses in Vojvodina. Stratification of carcass sides was done based on coefficient of linear regression of traits in relation to mass of cooled carcass sides. Analysis 'General regression Models'/Statistika 8 was applied. Percentage of muscle tissue was evaluated in three ways: simulation of instrumental FOM method according to formula defined by Petrović et al. (2009) and application of dissection method, using formula issued in EU Regulation from 1994 (Commission Regulation, 3127/94) and 2006 (Commission Regulation, 1197/2006). Obtained results showed that relative share of muscle tissue in carcass sides determined according to previous EU1 regulation was significantly (p (lt) 0,05) lower (49,90%) than established share of muscle tissue determined according to mathematical FOM model (53,71%) and current regulation EU2 (54,03 %). The greatest share of muscle tissue was determined in leg/ham (67,67 %), and the lowest in BRP (48,65%). In BRP the highest share of KoPo and IMMT (31,10% and 13,72 %) were established, and the lowest in leg/ham (18,67 % and 5,60%). In cooled pig carcass sides, share of leg meat was 16,05%, share of muscle tissue of shoulder 7,11%, BLP 8,49% and BRP 4,95%. Leg contributes to the highest share of KoPo in carcass side (4,42 %), and shoulder to the lowest (2,63 %). The highest share of IMMT in carcass side was established in BRP, and the lowest in shoulder (0,87 %). For the purpose of distribution of pig carcasses into commercial classes according to SEUROP system using FOM and EU2 methods, all carcass sides were categorized into medium commercial classes (E and U), whereas according to EU1 formula only 36,30% of carcass sides were categorized in the same commercial classes, and 63,70% in lower class (R). None of the formulas applied resulted in classification of carcasses into meat class of highest meat ratio 'S' or lowest meat ratios 'O' and 'P'. Based on this we concluded that investigated sample was of medium quality, i.e. that carcass sides can be categorized as commercial classes (E, U and R). Finally, it can be concluded that because of the established differences in regard to obtained lean meat ratio by application of previous (EU1) and current (EU2) formula, additional research are necessary.Istraživanje je urađeno na 135 svinjskih polutki različitih genotipova, oba pola u nekoliko klanica u Vojvodini. Stratifikacija polutki prema telesnoj masi izvršena je na osnovu koeficijenta linearne regresije osobina na masu ohlađenih polutki. Primenjena je analiza 'General regression Models'/statistika 8. Procenat mišićnog tkiva procenjivan je na tri načina: simulacijom instrumentalne metode FOM i primenom metode disekcije (Commission Regulation, 3127/94 (EU1) et Commission Regulation, 1197/2006 (EU2). Dobijeni rezultati su pokazali da je relativni udeo mišićnog tkiva u polutkama svinja određen prema prethodnom pravilniku (EU1) signifikantno (p (lt) 0,05) niži (49.90%) od utvrđenog udela mišićnog tkiva prema matematičkom modelu FOM (53.71%) i prema važećem pravilniku EU2 (54.03 %). Na ohlađenim polutkama zaklanih svinja udeo mesa buta čini 16.05%, udeo mišićnog tkiva plećke 7.11%, LSD 8.49% i TRD 4.95%. Distribucijom svinjskih trupova u tržišne klase prema SEUROP sistemu primenom FOM i EU2 metode sve ispitivane polutke svrstane su u srednje trgovačke klase (E i U), dok je EU1 formula klasifikovala samo 36.30% svinjskih polutki u istu trgovačku klasu, a 63.70% u nižu trgovačku klasu (R). Nijedna formula nije klasifikovala nijedan trup u tržišne klase mesa sa najvišim 'S' i najnižim udelom mesa 'O' i 'P'. Na osnovu toga, zaključeno je da je ispitivani uzorak srednjeg kvaliteta, tj. polutke su klasifikovane u srednje kvalitetne trgovačke klase (E, U i R). Na kraju, može se zaključiti da zbog ustanovljenih razlika dobijenog procenta mesa primenom prethodne (EU1) i važeće (EU2) jednačine neophodna su dalja istraživanja na ovu temu

Countercyclical economic policy in overcoming economic fluctuations

Predmet doktorske disertacije pod nazivom „Kontraciklična ekonomska politika u prevazilaženju privrednih fluktuacija“ je teorijska i empirijska analiza kontraciklične makroekonomske politike i njene primene u prevazilaženju cikličnih fluktuacija ekonomske aktivnosti u razvijenim tržišnim ekonomijama s jedne, i u ekonomijama u razvoju i ekonomijama sa nastajućim tržištima, sa druge strane. Tema disertacije je obrađena na celovit način koji je istovremeno uključio i predstavljanje teorijsko – metodološke osnove kontraciklične makroekonomske politike i rezultate empirijskih istraživanja koji ilustruju njenu primenu u razvijenim tržišnim ekonomijama, ekonomijama u razvoju te ekonomijama sa nastajućim tržištima, kao i empirijsko istraživanje o cikličnom karakteru ekonomske politike u Srbiji. Teorijske osnove kontraciklične ekonomske politike obuhvatile su instrumente i mere kontraciklične ekonomske politike i načine i mehanizme njihovog delovanja u prevazilaženju cikličnih privrednih fluktuacija koji su definisani u okviru teorije ekonomske politike. Pored toga, teorijske osnove su obuhvatile i stavove o uzrocima, transmisionim mehanizmima, načinima manifestacije i posledicama ciklične makroekonomske nestabilnosti koji su formulisani u savremenim makroekonomskim teorijama i njihove preporuke za vođenje kontraciklične ekonomske politike. Metodološke osnove kontraciklične politike obuhvatile su predstavljanje metoda statistike i ekonometrije koje se koriste u savremenim istraživanjima poslovnih ciklusa i cikličnoj analizi ekonomske aktivnosti. Nakon predstavljanja teorijsko – metodološke osnove kontraciklične ekonomske politike, disertacija se fokusirala na primenu kontraciklične ekonomske politike u savremenim tržišnim ekonomijama i ekonomijama u razvoju te ekonomijama sa nastajućim tržištima i na rezultate empirijskih istraživanja o karakteristikama poslovnih ciklusa i ekonomske politike u ovim ekonomijama. Rezultati ovih istraživanja prikazani su u disertaciji, pri čemu je izvršena njihova komparativna analiza sa posebnim naglaskom na uspešnost primene i efekte pojedinih mera kontraciklične ekonomske politike u različitim ekonomijama, uz zaključak da se iskustva ekonomija sa nastajućim tržištima u pogledu primene mera kontraciklične ekonomske politike mogu koristiti u procesima formulisanja i implementacije kontraciklične ekonomske politike u Srbiji. U nastavku disertacije predstavljeno je empirijsko istraživanje čiji je cilj bio da se ispita ciklični karakter ekonomske politike u Srbiji u periodu 2001-2011. godine. Istraživanje se sastojalo iz dva dela. U prvom delu istraživanja identifikovane su tačke prekretnice i ciklusi rasta u ekonomskoj aktivnosti Srbije u periodu 2001-2011. i izvršena je ciklična analiza ekonomske aktivnosti. Zatim je izvršeno poređenje sa cikličnim kretanjem ekonomske aktivnosti zemalja Evropske unije (Zone evra) kako bi se ispitalo odakle potiču ekonomske fluktuacije i da li su ciklusi u Srbiji posledica specifičnih okolnosti i događaja u ekonomskom, društvenom i političkom životu Srbije ili su posledica transmisije ciklusa iz inostranstva. Rezultati su pokazali da tačke prekretnice ciklusa Zone evra prethode tačkama prekretnicama srpske privrede i da je ovo prethođenje vrlo kratko, tako da se ekonomske fluktuacije iz zemalja Zone evra prenose na Srbiju vrlo brzo, praktično u okviru istog kvartala.The subject of a doctoral dissertation entitled “Countercyclical economic policy in overcoming economic fluctuations” is a theoretical and empirical analysis of countercyclical macroeconomic policy and its use in overcoming cyclical fluctuations in economic activity in developed economies on the one hand, and developing economies and economies in emerging markets, on the other hand. The dissertation is addressed in a comprehensive manner that involves both the presentation of the theoretical and methodological foundations of countercyclical macroeconomic policies, and the presentation of the results of empirical studies that illustrate the use of the countercyclical economic policy in developed market economies, developing economies and economies in emerging markets, together with the empirical study on cyclical properties of economic policy in Serbia. Theoretical foundations of countercyclical economic policy have encompassed an overview of counter-cyclical economic policy instruments and measures as they are defined in the theory of economic policy and how they affect the economy in overcoming cyclical economic fluctuations. In addition, theoretical foundations have included different opinions of modern macroeconomic theories concerning what causes cyclical fluctuations, how they manifest, what the mechanisms of their propagations are, as well as economic policy suggestions. Methodological foundations have included the presentation of statistical and econometric methods used in contemporary studies of business cycles and in the cyclical analysis. After presenting the theoretical and methodological foundations of countercyclical economic policies, dissertation focuses on the use of counter-cyclical economic policy in developed economies, developing economies and economies in emerging markets and on the results of empirical researches on cyclical features of business cycles and economic policy in these economies. The results of these researches are presented and have been analyzed with special emphasis on the efficiency of measures of counter-cyclical economic policy and their effects on different types of economies. The conclusion is that the experience of emerging market economies with respect to the implementation of countercyclical economic policy can be used in the process of formulation and implementation of counter-cyclical economic policy in Serbia. Furthermore, the results of an empirical study whose aim was to examine the cyclical properties of economic policy in Serbia in the period 2001-2011 are also presented. Research consists of two parts. In the first part of the study the turning points and growth cycles in economic activity in Serbia in the period 2001-2011 were identified and the cyclic analysis of economic activity was performed. Then, the cyclical fluctuations in economic activity of the European Union (euro zone) were compared with those in Serbia in order to examine whether the cycles in Serbia are the result of specific circumstances and developments in the economic, social and political environment or the consequence of the transmission cycle from abroad. The empirical study has shown that the turning points in cycles of euro area precede the turning points of the Serbian economy and that this precedence is very short, so that economic fluctuations of the euro zone are transmitted on Serbia very fast, that is, within the same quarter