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Well defined structures at nanometric scale of multiferroicmaterials present an increasing interest due to their unique physical properties and potential applications. Fabrication of artificial nanostructures requires sophisticated technology and has been recognized as a hard-attainable issue. For these reasons the fabrication of ordered nanostructures, via spontaneous self-organization, is a topic of major relevance. Complex oxide thin films are often elastically strained and this lattice strain can, in some cases, select preferential growth modes leading to the appearance of different self-organized morphologies. In this work we report on the controlled fabrication of a self-assembled network of nanostructures (pits and grooves) in highly epitaxial BiFeO3thin films. As previously shown in the case of manganite thin films [1-2], the remarkable degree of ordering is achieved using vicinal substrates with well-defined step-terrace morphology. Nanostructured BiFeO3thin films show mixed-phase morphology, exhibiting the giant ferroelectric polarization close to the theoretical limit. These particular microstructures open a huge playground for future applications inmultiferroic nanomaterials.

Resumen del trabajo presentado al Joint European Magnetic Symposia (JEMS), celebrado en Uppsala (Sweden) del 26 al 30 de agosto de 2019., The tendency of some functional perovskite oxides towards self-organized growth andspontaneous nanostructuration, offers enormous potential for the implementation of newnanodevices. Among them, environment friendly multiferroic BiFeO3 present an increasinginterest due to large spontaneous polarization at room-temperature. In form of epitaxialthin films, functional properties of this multiferroic can be drastically modified due topresence of the structural strain induced by selected substrate. Additionally, substratevicinity open new playground by inducing new metastable states with orderednanostructures at the surface. Complex oxide thin films are often elastically strained andthis lattice strain can, in some cases, select preferential growth modes leading to theappearance of different self-organized morphologies.In this work we report on the controlled fabrication of a self-assembled network ofnanostructures (pits and grooves) in highly epitaxial BiFeO3 thin films. As previously shownin the case of manganite thin films, the remarkable degree of ordering is achieved usingvicinal substrates with well-defined step-terrace morphology. Nanostructured BiFeO3 thinfilms show mixed-phase morphology, exhibiting the giant ferroelectric polarization close tothe theoretical limit. These particular microstructures open a huge playground for futureapplications in multiferroic nanomaterials.

This paper presents an results overview from experiments about supplemental nutrition pheasant hunting grounds, during reproduction period. Previous studies have generally followed the effects of using a grain cereals (wheat and barley) for the purpose of supplemental nutrition hens to reproductive parameters. Due to the fact that the grain carbohydrate nutrient is deficient to protein and calcium, results are lacking, or were minimal in some parameters. Therefore, the proposed use feed properly balanced all the necessary nutrients, with the maximum feeder dispersion (one feeder per territory males), in order to reduce predation and direct losses of birds and eggs. U radu je izložen pregled rezultata istraživanja o dopunskoj ishrani fazana u lovištima za vreme reprodukcije. Dosadašnja istraživanja su uglavnom pratila efekte korišćenja zrna nekog žita (pšenice ili ječma) u cilju dopunske ishrane fazanki. Zbog činjenice da su žita ugljenohidratna hraniva, deficitarna u proteinima i kalcijumu, rezultati su izostali. Zbog toga se predlaže korišćenje adekvatno balansirane hrane na sve potrebne hranljive sastojke, uz maksimalnu disperziju hranilica (jedna hranilica po jednoj teritoriji mužjaka) u cilju smanjenja predatorstva i direktnih gubitaka ptica i jaja.

The paper presents the needs of pheasant flock and the possibility of designing a mixture with substitutions feed of animal origin or products of soybean processing. Basis of concrete examples, three types of concentrate mixtures, it can be seen that the preparation of concentrate mixtures for pheasants hens possible without the use of animal feedstuffs, while reducing the share of products of soybean processing, using synthetic amino acids. Thanks to this, a lower price and concentrate mixtures. At the same time, it is possible to fulfill the requirements in accordance with the standards and restrictions for certain nutrients because of the presence of some toxic matters. U radu su izložene potrebe matičnog jata fazana i mogućnost balansiranja smeša uz supstituciju hraniva animalnog porekla ili proizvoda prerade soje. Na osnovu konkretnih primera, odnosno tri vrste smeša koncentrata, vidi se da je pripremanje smeša koncentrata za fazanke nosilje moguće bez upotrebe hraniva animalnog porekla, uz smanjenje udela proizvoda prerade soje, korišćenjem sintetičkih aminokiselina. Zahvaljujući tome, postiže se i niža cena smeša koncentrata. Istovremeno, na taj način moguće je ispuniti zahteve u skladu sa normativima, kao i ograničenja za pojedina hraniva zbog prisustva nekih antinutritivnih materija.

The paper gives review about effects of local climate and forestation to the leveret’s percentage, of brown hare population research in hunting grounds of Serbia. Performed research rely to measurement of dry eye lens (Lens crystaline), basis of which it can perform precise classification by age category of hunted hares. Practically, for planning degree of use brown hare, the most important are age category: up to one year, and over one year. The statistical analysis of data collected during several years and in various hunting grounds of Serbia, has not found significant influence factors of climate (temperature and precipitation) and the degree of forestation (as an indicator of the benefits of environment and natural resources, food). Based on the literature review, it can be concluded that the size and age structure of the population of brown hare have a big impact, in addition to examined, and anthropogenic factors. U radu je dat pregled domaćih istraživanja uticaja klime i šumovitosti na procenat mladih u populaciji zeca u lovištima Srbije. Obavljena ispitivanja se baziraju na merenju osušenog očnog sočiva (Lens crystalina), na osnovu čega se može izvršiti precizno razvrstavanje ulovljenih životinja u starosne kategorije. Za praksu planiranja stepena korišćenja zeca najznačajnije su starosne kategorije do jedne i preko jedne godine. Pri statističkoj analizi podataka prikupljenih iz više godina i iz različitih lovišta Srbije nije utvrđen signifikantan uticaj faktora klime (temperature i padavina) i stepena pošumljenosti (kao pokazatelja pogodnosti životne sredine i prirodnih resursa hrane). To ukazuje da je uticaj dugih faktora i njihovo interakcijsko delovanje mnogo veće. Na osnovu pregleda literature može se zaključiti da na brojnost i starosnu strukturu populacije zeca veliki uticaj imaju, pored ispitivanih, pre svega antropogeni faktori.

Using density-functional methods, we study the electronic structure of Ba3CuSb2O9, a candidate material for the quantum spin liquid behavior. We study both the triangular lattice as well as the recently proposed hexagonal lattice structures with flipped Cu-Sb dumbbells. The band structure near the Fermi energy is described very well by a tight-binding Hamiltonian involving the Cu (e(g)) orbitals, confirming their central role in the physics of the problem. A minimal tight-binding Hamiltonian for the triangular structure is presented. The Cu (d(9)) ions (a single e(g) hole in the band structure) present in the compound are expected to be Jahn-Teller centers, while the nature of the Jahn-Teller distortions in this material is still under debate. Solving a simple model by exact diagonalization, we show that electronic correlation effects in general enhance the tendency towards a Jahn-Teller distortion by reducing the kinetic energy due to correlation effects. Our density-functional calculations do indeed show a significant Jahn-Teller distortion of the CuO6 octahedra when we include the correlation effects within the Coulomb-corrected GGA+U method, so that the Jahn-Teller effect is correlation driven. We argue for the presence of a random static Jahn-Teller distortion in the hexagonal structure rather than a dynamical one because of the broken octahedral symmetry around the CuO6 octahedra and the potential fluctuations inherently present in the system caused by a significant disorder, which is believed to be present, in particular, due to the flipped Cu-Sb dumbbells.

This paper presents a literature review of nutrition pheasant parent flocks in aviaries. Nutrition affects to the number, size, and biological quality of the eggs directly from the necessary nutrients that provide by diet, or indirectly through the body’s reserves, which are provided in the past. Comparing the recommendations of the various standards (AEC, INRA, NRC) and the value for the content of nutrients that are used in the experiments and the pheasant, the differences can be observed, especially in the protein content. Norms recent (NRC) calls on the similarity between the needs of pheasants and turkeys and recommend optimal balance of protein and energy (Mcal ME for each maximum 5.6% protein). By the way, in recent experiments, more attention is paid to micronutrients (trace elements, vitamins), physical form of concentrated feed and the etc. Because of these problems and shortcomings it is necessary to continue research, to the current recommendations for nutrient content corrected in order to reduce feeding costs and achieve better results of parent flocks. U radu je dat pregled literaturnih podataka iz ishrane matičnog jata fazana u volijerama. Ishrana utiče na broj, veličinu i biološki kvalitet jaja direktno preko neophodnih hranljivih materija koje se obezbeđuju obrokom, ili indirektno preko telesnih rezervi koje su obezbeđene u ranijem periodu. Poređenjem preporuka iz različitih normativa (AEC, INRA, NRC) i vrednosti za sadržaj hranljivih materija koje se koriste u eksperimentima i na fazanerijama, mogu se uočiti razlike, pre svega u sadržaju proteina. Normativi novijeg datuma (NRC) pozivaju se na sličnost potreba fazana i ćuraka i preporučuju optimalan odnos energije i proteina (za svaku Mcal ME maksimalno 5,6% proteina). Osim toga, u eksperimentima novijeg datuma više pažnje se poklanja mikro-hranivima (mikroelementima, vitaminima), fizičkoj formi koncentrovane hrane i sl. Zbog navedenih problema i nedostataka neophodno je nastaviti istraživanja, kako bi se dosadašnje preporuke za sadržaj hranljivih materija korigovale, u cilju smanjenja troškova ishrane i postizanja boljih proizvodnih rezultata matičnog jata.

Link to the corrected article: [https://vinar.vin.bg.ac.rs/handle/123456789/4991]

Carbon nanocoils (CNC) are experimentally observed by Zhang et al. in 1994, shortly after being theoretically predicted by Ihara et al. Their geometrical structure is usually described by four parameters: tubular diameter, pitch, inclination and diameter of a coil. Nowadays, CNC synthesized by CVD method, have various helical and tubular parameters and regularly coiled structures have periodic incorporation of pentagons and heptagons into the basic hexagonal carbon network. Here, we construct model of single-wall helically coiled carbon nanotubes by means of graph theory and topological coordinates method. After getting three-dimensional coordinates of the atoms we proceed with the relaxation by successive application of the following methods: 1) harmonic approximation; 2) molecular mechanics based on the Brenner potential; and 3) density functional tight binding (DFTB). Finally, by DFTB and line group symmetry implemented POLSym code, we calculate total and cohesive energy of the obtained fully relaxed structures of CNCs.

In the process of refining raw materials and metal production in the metallurgical industry and mining are allocated a number of different secondary materials to be deposited. In the enrichment of the ore by flotation, in addition to metals concentrate, flotation tailings are allocated, which is stored in permanent landfill. When solving the problems of processing of deposited material, landfill rehabilitation and revitalization of the affected land should be accounted more related effects in defining the feasibility of investment projects. U procesima prerade sirovina i proizvodnje metala izdvaja se više različitih materijala koji se deponuju. Pri obogaćivanju ruda u flotacijama, pored koncentrata metala, izdvaja se i otpadna flotaciona jalovina koja se skladišti na trajne deponije. Pri rešavanju problematike prerade deponovanih materijala, saniranja deponija i revitalizacije zemljišta trebalo bi obračunati i više pratećih efekata pri definisanju opravdanosti investicionih radova.

Nanocrystalline ceria (CeO2) is known for its ionic conductivity and oxygen storage properties, which depend on the presence of oxygen ion vacancies. The vacancies cause several important changes in CeO2 involving microstrain, electronic structure, magnetic properties, etc. In this article, we focus our attention to the microstructural changes of nanocrystalline CeO2-x annealed at different temperatures in the range 200500 degrees C. Structural and vibrational properties were investigated by X-ray diffraction and Raman spectroscopy. It was observed that the content of oxygen vacancies changed significantly with increasing annealing temperature, which plays an important role in the observed microstructural changes of the annealed samples. We demonstrate that the observed microstrain changes, because of variable defect content, dominate over the crystallite size effect. This finding is opposite to the conclusions made by several other authors. A new mode, classified as a probable surface mode, was observed in the Raman spectra at similar to 480 cm(1), the appearance of which can be explained by the large defective structure and disorder in the ceria lattice. Copyright (c) 2011 John Wiley and Sons, Ltd.

This study is based on the application of mathematical methods of statistical analysis that can be used to predict the development of motor fuel consumption in the Republic of Serbia. It is based on the linear dependence of consumption growth of motor fuel from the development of gross domestic product per capita, which is then corrected by introducing five additional influencing parameters. The model results indicate that the total consumption of motor fuels in Serbia from 2010 to 2025 will be increased by 26.5%. Individual consumption of motor fuels shows different market tendencies. Diesel fuel consumption expects to continue intensive growth to 2025, even though slightly slower than the achievements in the last decade. The current trend of declining demand for gasoline will be stopped from 2015-2016, then followed by slow growth of demand by 2025. Consumption of liquefied petroleum gasses (LPG) will enter the phase of saturation in 2015. Ovaj rad se bazira na primeni metoda matematičke statističke analize koji mogu da posluže za predviđanje razvoja potrošnje motornih goriva u Republici Srbiji. Model je baziran na linearnoj zavisnosti rasta obima potrošnje motornih goriva od razvoja bruto domaćeg proizvoda po glavi stanovnika koja je potom korigovana uvođenjem pet dodatnih uticajnih parametara. Svakom od ovih parametara dodeljen je odgovarajući koeficijent koji odmerava specifični uticaj istog na potrošnju motornih goriva. Rezultati modela ukazuju da će ukupna potrošnja motornih goriva u Srbiji od 2010. do 2025. biti uvećana za 26,5%, sa 2,36 Mt/god na 2,99 Mt/god. Potrošnju dizel goriva očekuje nastavak intenzivnog rasta, doduše nešto usporen u odnosu na ostvarenja u prethodnoj dekadi i do 2025. potrošnja će dostići nivo od blizu 2 Mt. Postojeći trend opadanja tražnje motornih benzina biće zaustavljen 2015-2016, nakon toga sledi spori rast tražnje i do 2025. potrošnja će biti oko 550 Kt. Potrošnja tečnog naftnog gasa (TNG) nakon intenzivnog rasta od 2015. ući će u fazu saturacije, tako da će u periodu 2010-2025. godine zabeležiti mali porast potrošnje - sa 377 na 435 Kt/god.

In this review paper has been shown how the specific nutrition of brown hare and pheasant, forms and procedures of supplement, and their impact on reproductive performance and weight of the hunted species. Pheasant use of nutrients in the diet of vegetable and animal origin. Food of animal origin (mainly insects) participate in the meal to 80% of offspring, and in serving adults with 20-30%. Nutrition brown hare as expressive herbivore is based on wild plant species and crop cultures. Previous studies indicate that in rural areas about 50% rabbit diet consists only 2-3 plant species, where winter wheat is dominated by green. Supplementary feeding wildlife involves not only planning and food intake in open hunting areas during the winter, but the use of crops throughout the year. The quality of food (natural and supplemental) affects the reproductive results of a hares across the energy value of milk (14.5 kJg-1 in Spring and 11.03 kJg-1 in autumn), and the mass of hunting hares (higher in rural areas). Supplementary feeding of pheasants in the spring contributes to improving the reproduction of some results, and improving the percentage of body weight and survival of young pheasants who have settled in the hunting area. U radu su na revijalan način prikazane nutritivne specifičnosti zeca i fazana, oblici i postupci dodatne ishrane, i njihov uticaj na reproduktivne rezultate i odstrelnu masu ovih vrsta divljači. Fazan koristi u ishrani hraniva biljnog i životinjskog porekla. Hrana životinjskog porekla (prvenstveno insekti) učestvuju u obroku podmlatka do 80%, a u obroku odraslih sa 20-30%. Ishrana zeca kao ortodoksnog herbivore se zasniva na divljim biljnim vrstama i ratarskim kulturama. Ranija istraživanja ukazuju da u poljoprivrednim područjima oko 50% ishrane zeca čine samo 2-3 biljne vrste, pri čemu zimi dominira zelena pšenica. Dopunska ishrana divljači podrazumeva ne samo plansko unošenje hrane u otvorena lovišta tokom zime, već i korišćenje namenski gajenih ratarskih kultura u toku cele godine. Kvalitet ishrane (prirodne i dopunske) utiče na reproduktivne rezultate zeca preko energetske vrednosti mleka (14,5 kJg-1 u proleće i 11,03 kJg-1 u jesen), kao i na odstrelnu masu zečeva (veća u poljoprivrednim područjima). Dopunska ishrana fazana u proleće doprinosi popravljanju nekih reproduktivnih rezultata, kao i popravljanju procenta preživljavanja i telesne mase mladih fazana koji su naseljeni u lovišta.

In this review paper has been shown how the specific feeding brown hares and pheasant, the structure of arable land in the hunting grounds of Serbia and its importance as a nutrient base for the number of populations of these species. The spatial distribution and abundance of brown hares and pheasants primarily affect natural factors (climate, disease and predators) and to some extent, extent and anthropogenic factors (agricultural work, transportation, hunting ...). Hunting grounds in Serbia occupy a total area of 8,828,528.29 hectares, of which the fields and fields 3,787,836.13 hectares or 42.9%. This structure in the hunting area (the area under cereals in particular) have a major impact on the number of brown hares and pheasants, which in recent years has the trend. In contrast, the recorded increase in the percentage of killing relative to base stock of game, which the hardest in 2008. amounted to 18.02% and 45.78% for the pheasants. Based on the literature review it is evident that the intensification of agriculture and reducing the natural diversity of food are of great importance for the number of hares and pheasant populations. A partial solution to this problem is in the preservation of 'green oasis' and found a 'green corridor' between large areas of monoculture, organic vegetable production, control the number of predators and offspring production in the rabbit and pheasant farm. . U radu su na revijalan način prikazane specifičnosti ishrane fazana i zeca, struktura obradivih površina u lovištima Srbije i njihov značaj kao hranidbene baze za brojnost populacija ovih vrsta divljači. Na prostornu distribuciju i brojnost fazana i zeca utiču prvenstveno prirodni faktori (klima, bolesti i predatori) a u značajnoj meri i antropogeni faktori (poljoprivredni radovi, saobraćaj, lov...). Lovišta u Srbiji zauzimaju ukupnu površinu od 8.828.528,29 ha, od čega je pod njivama i oranicama 3.787.836,13 ha, odnosno 42,9%. Ovakva struktura površina u lovištima (naročito površina pod cerealijama) ima veliki uticaj na brojnost populacija zeca i fazana, koja zadnjih godina ima trend smanjenja. Nasuprot tome, beleži se povećanje procenta odstrela u odnosu na matični fond divljači, koji za zeca u 2008. godini iznosi 18,02% a za fazana 45,78%. Na osnovu pregleda literature evidentno je da intenzifikacija poljoprivrede i smanjenje raznovrsnosti prirodne ishrane imaju veliki značaj za brojnost populacija zeca i fazana. Delimično rešenje ovog problema je u: očuvanju 'zelenih oaza' i zasnivanje 'zelenih koridora' između velikih površina sa monokultura, organskoj biljnoj proizvodnji, kontroli brojnosti predatora i proizvodnji podmlatka zeca i fazana u odgajivalištima. . PR Projekat Ministarstva nauke Republike Srbije, br. TR-31009.

The overview of the results of pheasant chicks feeding in pens is given in this paper. Rearing of pheasant chicks in the controlled environment is important because they are not produced in sufficient numbers in the nature. Body mass of pheasant chicks in the moment when they are released in the hunting ground is very important for their survival rate during the period when they are adapting to the natural conditions. It can be concluded from the published data that intensive rearing of pheasant chicks requires high protein levels, which in the first 30 days is between 28 and 32%, while later, in the period prior to the release they need 24 to 26% crude protein in the diet. Investigations in our country, where concentrate mixture with 30% protein was given until 28 days of age, and 24% protein from 28 to 42 day, the obtained body mass was 457.07g. Higher protein level than this is not rational, and may be harmful because it may cause pathological changes in liver and kidneys. After the first rearing phase pheasant chicks should be given grains and forage mass in order to prepare them for the feeding in the nature. The rearing is finished at the age of about 60 days, when they are released with body mass about 400-440 g. U radu je dat pregled rezultata ishrane podmladka fazana u volijerama. Odgoj fazančića u kontrolisanim uslovima je neophodan zbog nedovoljne prirodne produkcije fazana. Telesna masa fazančića u momentu puštanja u lovište je jako važna za stepen preživljavanja u periodu prilagođavanja na prirodne uslove. Na osnovu literaturnih podataka može se zaključiti da intenzivan odgoj fazančića u kontrolisanim uslovima zahteva visok nivo proteina, koji u prvom periodu (do 30 dana) iznosi 28-32%, a kasnije, do ispuštanja u lovišta, 24-26%. U istraživanjima kod nas, pri korišćenju smeše sa 30% proteina do 28. dana starosti i sa 24% proteina od 28. do 42. dana starosti, ostvarena je telesna masa od 457,07 g. Veći nivo proteina od navedenog je neracionalan, a može biti i štetan jer dovodi do patoloških promena na jetri i bubrezima. Nakon prvog perioda odgoja, fazančićima se daje zrnasta hrana i zelena masa u cilju prilagođavanja na ishranu u prirodi. Odgoj fazančića se završava sa oko 60 dana starosti, kada se puštaju u lovište sa telesnom masom od 400 - 440 g.

Ultrafine porous cerium dioxide nanopowders were synthesized by relatively new and cost-effective hydrothermal method varying the main synthesis parameters, temperature of calcination and type of basic solution. Characterization of the as-produced powders was performed by X-ray diffraction (XRD), atomic force microscopy (AFM), Raman scattering and Brunauer-Emmett-Teller (BET) method. This study reveals that difference in synthesis parameters has strong influence on the particle size, surface area, and pore size distribution enabling the more precise control of material properties very important for catalytic and nanosensor applications. (C) 2011 WILEY-VCH Verlag GmbH and Co. KGaA, Weinheim

The investments growth in the field of agriculture, hunting and fishery represents a condition of its technical and technological modernization, and finally, one of the conditions of economic stability of total economy. This research-applicable activity evaluates, on scientific basis, the effectiveness of the investment project, which refers to the intensive breed of the European deer (Cervus elaphus L.) and the wild boar (Sus scrofa L.) in fenced off part of hunting-ground "Mirosaljci-Strmovo" in the period 2009 - 2018. In the paperwork, a short description of a business idea is given, describing a statistical and dynamic approach on evaluation effects, which brings the investment project, as well as determination of the investments' safety level in terms of uncertainty. The results obtained during the research are focused on future strategic analyses in promoting hunting as a source for business financing.

M20 M22

This paper reviews the specific choice of food and feed for brown hare (Lepus Europaeus) in Serbia and Europe, reducing the diversity of flora as a result of the intensification of agriculture, and the impact of these changes in population numbers. Examination of the composition of hare food is done gastric contents microscopy or fresh feces. Studies from Sweden, Austria and Hungary indicate that hare consume dozens species of plants. However, most authors agree that about 50% of meals are only 2-3 plant species. Based on the literature review can be concluded that the intensification of agriculture substantially reduced the diversity of wild plants in farming areas, most authors considered important to reduce the number of hares in Europe. In particular, it highlights the problem of food deficit in the summer, after harvest of winter crops. During that time comes to change the chemical composition of milk or falling energy value of 14.5 KJg-1 (spring) to 11.03 KJg-1 (autumn), which negatively affects the offspring. In contrast, the deficit in the winter diet in most areas is less pronounced, due to the wheat fields. As a solution to these problems according to the establishment of 'green corridor' between the fields under the spruce monocultures, organic vegetable production, control the number of predators and possibly controlled production hare offspring in farm . U radu je dat pregled specifičnosti ishrane i izbor hraniva za zeca (Lepus europaeus) u Srbiji i Evropi, smanjenje raznovrsnosti flore kao posledica intenzifikacije poljoprivrede, i uticaj navedenih promena na brojnost populacija. Ispitivanje sastava ishrane zeca vrši se mikroskopiranjem želudačnog sadržaja ili svežeg fecesa. Istraživanja iz Švedske, Austrije i Mađarske ukazuju da zec konzumira nekoliko desetina vrsta biljaka. Međutim, većina autora se slaže da oko 50% sastava obroka čine samo 2-3 biljne vrste. Na osnovu pregleda literature može se zaključiti da je intenzifikacija poljoprivrede bitno smanjila raznovrsnost divljih biljnih vrsta u ratarskim područjima, što većina autora smatra značajnijim za smanjenje brojnosti zeca u Evropi. Naročito se ističe problem letnjeg deficita u hrani, nakon ubiranja ozimih kultura. U tom periodu dolazi i do promene hemijskog sastava mleka, odnosno pada energetske vrednosti od 14,5 kJg-1 (proleće) do 11,03 kJg-1 (jesen), što se negativno odražava na podmladak. Nasuprot tome, zimski deficit u ishrani u većini područja nije toliko izražen, zahvaljujući poljima sa pšenicom. Kao rešenje ovih problema navodi se zasnivanje 'zelenih koridora' između polja pod monokulturama, organska biljna proizvodnja, kontrola brojnosti predatora i eventualno, kontrolisana proizvodnja zečića u odgajivalištima. .

The devastation from roe deer and wild boar populations in agriculture and forestry usually occur due to the deficits, low quality or inaccurate feed distribution in the hunting grounds, game disturbance and their habits. With the adequate management measures those harmful effects may be reduced or prevented. One of more important measures is the increase of feed production in the hunting ground or additional feeding with feeds from other sources during the periods when devastations occur. That way the harmful effects in agriculture and forestry may be reduced up to 50%. With those measures, at the same time, the number of animals is preserved, the losses are reduced and the quality of trophies is increased - in other words the harms on game animals is reduced. Also, it is possible to do a number of mechanic or chemical measures to protect crops, orchards and vineyards, forests, domestic animals and bees. It is also possible to fence the hunting ground and keep game animals in controlled environment. Štete od srna i divljih svinja u poljoprivredi i šumarstvu najčešće nastaju zbog nedostataka, lošeg kvaliteta i neodgovarajuće distribucije hrane u lovištu, uznemiravanja divljači, kao i zbog navika divljači. Odgovarajućim gazdinskim merama u lovištu ove štete se mogu smanjiti ili sprečiti. Jedna od važnijih mera je svakako povećanje proizvodnje hrane u samom lovištu ili prihranjivanje divljači hranom iz drugih izvora u periodu kada nastaju štete. Na ovaj način se štete od divljači u šumarstvu i poljoprivredi mogu smanjiti i do 50%. Navedenim postupcima se, istovremeno, održava odgovarajuća brojnost divljači, kontrolišu gubici i povećava kvalitet trofeja, odnosno, smanjuju se štete na samoj divljači. Pored toga, moguće je preduzeti i niz mehaničkih ili hemijskih mera zaštite ratarskih i povrtarskih useva, voćnjaka i vinograda, šuma, domaćih životinja i pčela, ili ograditi lovište i gajiti divljač u kontrolisanim uslovima.

The paper presents the results of the analysis on the loss of young pheasants in the process of pheasants rearing. The analysis of the results regarding the production of pheasants was conducted at two pheasant farms 'Rit' and 'Vinik' in the period from 2002 - 2004. The mortality of young pheasants up to the ninth day of age, at pheasant farm 'Rit', varied from 0,26%-0.70%. In a vented hall the mortality was in the interval of 1.30%-2.55%, and in volières (large cages) used for turning the pheasants into a wild game birds, it ranged from 1.70%-1.78%. Total mortality in pheasants up to 40 days of age varied between 3.60%-4.47%. In the batteries at the pheasant farm 'Vinik', the mortality of young pheasants ranged from 2.21%-3.62%. In vented boxes the highest mortality from 3.11%-6.73% was recorded, whilst in volières for turning the pheasants into a wild game birds, the lowest mortality ranging between 2.34% and 3.04% was recorded. Total mortality from hatching until 40 days of age varied from 8.33%-13.39%. A great number of exogenous factors influence production results of young pheasants rearing in pheasants farms. Mortality in battery station and vented boxes can be ascribed to a technical shortages of the buildings themselves, where adequate conditions regarding temperature, space, ventilation, hygiene, moisture in the rooms for rearing, kind of diets and the way of their distribution, etc., are not well provided. Izvršena je analiza uticaja načina gajenja na mortalitet fazančića, do 40 dana starosti, u dve fazanerije, u periodu od tri godine. Proizvodnja i odgoj, u tehničkom i tehnološkom smislu, po pojedinim fazama, dosta se razlikuju, na ove dve fazanerije, a samim tim su i razlike u gubicima (uginućima) veće ili manje. No, u celini gledano, rezultati su dosta dobri, a to potvrđuje i njihovo poređenje sa brojnim literaturnim podacima. Očekuje se da će se i uginuća fazančića smanjiti sa poboljšanjem mikroklimatskih uslova u objektima, boljom preventivom i manjom pojavom bolesti, boljem regulisanju optimalnog broja u određenom prostoru, boljom i adekvatnijom ishranom, kao i nekim drugim faktorima.

The basic task of this paper is that on base of statistics information's about number and killing plan, in the round of river Tisa, for long period realize number and degree of benefit for broen hare. All results are presented in tables, for round of river Tisa, and for each hunting organization. To realize this paper we use basic elements of rabbit population: number of rabbit, thickness, degree of benefit, age structure. Research are for five years from 2002-2007. Osnovni zadatak ovog rada je da se na bazi podataka o brojnosti i odstrelu u lovištima Potiskog dela Bačke, za jedan duži period sagleda brojno stanje i stepen korišćenja zečije divljači. Dobijeni rezultati su predstavljeni tabelama za Potisko područje i pojedinačno po lovačkim udruženjima. U cilju ostvarivanja osnovnog zadatka ovog rada ispitani su osnovni elementi jedne zečije populacije: brojnost, gustina, stepen korišćenja i starosna struktura. Istraživanja obuhvataju period od 2002-2007 godine.

An overview of different types of damage caused in hunting grounds and agriculture in general by wildlife from the Carnivora order is given in this paper. Predators present one of the greatest problems for the hunting grounds, since they are destroying primarily progeny and eggs of game while searching for food. Most damage to the stock of game offspring is caused by jackal, who is in expansion in the recent years. Fox is feeding primarily on rodent-type vermin and predates on game offspring only in a small percent. Wolf may cause damage both on game and domestic animals stock. Wild boar may cause significant damage to game stock by predating on progeny of other game species. The brown bear may cause significant damage on corn and wheat crops. Unlike all aforementioned species, who are also scavengers, lynx feeds exclusively on living prey. One of measures for predator population control is considered hunting. Supplemental nutrition of carnivores by carrion is allowed by planning and construction of carrion baits. U radu je dat pregled različitih oblika šteta koju pravi divljač iz roda zveri, pre svega u lovištima, ali i u samoj poljoprivredi. Jedan od najvećih problema za lovišta predstavljaju predatori, koji u potrazi za hranom uništavaju pre svega podmladak i jaja divljači. Jednu od najvećih šteta na podmladku divljači čini šakal, koji je zadnjih godina u ekspanziji. Nasuprot tome, lisica se hrani pre svega mišolikim glodarima, a u manjem procentu i podmladak divljači. Štete od vuka mogu biti na divljači, ali i na svim vrstama domaćih životinja. Divlja svinja, u ograđenim lovištima, takođe, može da napravi velike štete uništavajući podmladak druge divljači. U pogledu šteta koje čini, jeste medved. Ova vrsta zveri je pre svega biljojed, pa pri ishrani pravi štete u usevima kukuruza i drugih žita, voćnjacima i pčelinjacima. U odnosu na sve pomenute vrste zveri, koje u ishrani rado koriste i lešine, ris se hrani isključivo živim plenom. Selektivni odstrel je jedna od mera za kontrolu brojnosti predatora. Planiranje i izgradnja mrciništa u lovištima omogućava dodatnu ishranu zveri, čime se smanjuju štete na lovnim vrstama divljači.

The basic methods for determination of the feed intake in wild ruminants were presented in the paper. Those methods are: field observation, esophageal fistula, microscoping and chemical analysis of the rumen contents and feces. Compared to other methods, the procedure of sensory, microscopic and chemical analysis is the most straightforward and provides valid evaluation of the feed ingestion in wild ruminants. The negative aspect of the method is in the necessity to sacrifice the animal. U radu su prikazani osnovni postupci utvrđivanja sastava ishrane divljih preživara, kao što su metod opservacije na terenu, metod jednjačke fistule, mikroskopiranje ili hemijska analiza buražnog sadržaja i mikroskopiranje ili hemijska analiza fecesa. U odnosu na ove metode, postupci organoleptičkog, mikroskopskog ili hemijskog ispitivanja sastava buraga vrši se najjednostavnije i daje najrealniju ocenu ishrane divljih preživara. Glavni nedostatak metode je potreba za žrtvovanjem životinja.

Development of petrochemical industry in Serbia has started in the early 70s of the last century. By disintegration of Yugoslavia the dimension of 'domestic' market for petrochemicals was first drastically reduced, what was followed by new 'strikes' in a row (UN sanctions, NATO bombing campaign and unprofessional implementation of the privatization process) so that the Serbian petrochemical industry found itself in great problems. Nowadays, a number of factories that had manufactured petrochemicals are in the bankruptcy with process plants out of function, and some plants for the production of petrochemical derivatives are sold abroad or even cut and finished as scrap. Factories that have survived are struggling with huge problems, and this applies particularly to those that produce the high-volume base petrochemicals. The paper analyzes the internal and external factors that led to the current critical situation in which there is Serbian petrochemistry, and proposed some measures that could contribute to the recovery of this very important industrial sector. Particular emphasis is placed on revitalization of existing manufacturing facilities and construction of new plants for the production of higher-order derivatives, which are products easier and more economical to sell. Investments to achieve these development goals, in contrast to widespread opinion, need not be high. Razvoj petrohemijske industrije u Srbiji je započet 70-tih godina prošlog veka. Raspadom Jugoslavije je prvo drastično redukovana dimenzija 'domaćeg' tržišta petrohemijskih roba, a potom su ovom ključnom industrijskom sektoru sukcesivno zadavani novi 'udarci' (sankcije UN, NATO bombardovanje i neprofesionalno vođenje procesa privatizacije), tako da se srpska petrohemijska industrija krajem prve dekade XXI veka našla u ogromnim problemima. Niz fabrika koje su proizvodile petrohemijske proizvode je u stečaju sa procesnim postrojenja van funkcije, a neki pogoni za proizvodnju petrohemijskih derivata su demontirani i prodati u inostranstvu ili čak isečeni i završili kao staro gvožđe. Fabrike koje su opstale bore se sa ogromnim problemima, a to se posebno odnosi na one najveće sisteme koji proizvode bazne petrohemikalije. U radu su analizirani interni i eksterni faktori koje su doveli do sadašnje kritične situacije, kao i predložene neke od mera koje bi mogle doprineti oporavku srpske petrohemijske industrije. Poseban akcenat je stavljen na revitalizaciju zapuštenih i izgradnju novih postrojenja za proizvodnju derivata više faze dorade, čime bi se dobili proizvodi koje je i lakše i ekonomičnije plasirati na tržištu. Investiciona ulaganja za postizanje ovakvih razvojnih ciljeva, nasuprot rasprostranjenom mišljenju, ne moraju biti visoka.

Transport measurements of the two-dimensional electron gas at the LaAlO3-SrTiO3 interface have found a density of carriers much lower than expected from the polar catastrophe arguments. From a detail density-functional study, we suggest how this discrepancy may be reconciled. We find that electrons occupy multiple subbands at the interface leading to a rich array of transport properties. Some electrons are confined to a single interfacial layer and susceptible to localization, while others with small masses and extended over several layers are expected to contribute to transport.

The influence of diet on 42 day old pheasants in artificial breeding is showed in this work. Two mixtures with two levels of proteins (with 30% and 26% of protein) until the age of four weeks and then were used mixtures with 24% and 20% of proteins. Every level of proteins is used for two densities, 550 and 450 units per box, so pheasants was performed on four groups of pheasants. The measurement of body mass of live pheasants was performed three times: 0. day, 15. day and 42. day after establishment of experiment. In this work are showed body mass, body mass increase, daily consumption per pheasant and food consumption for production one kilogram of increase and mortality. U radu su prikazani proizvodni parametri gajenja fazana u kontrolisanim uslovima. Ispitivanje je vršeno u periodu od šest nedelja na dve osnovne grupe fazana kod kojih je primenjen različit tretman ishrane. Grupe su tretirane sa dva nivoa sirovih proteina (30% i 26%) u smešama za ishranu, a sam nivo proteina je tokom razvoja fazana nakon četvrte nedelje smanjen u oba tretmana (24% i 20%). Osnovne grupe su bile podeljene u dve podgrupe sa različitom gustinom naseljenosti u baterijama za gajenje, od 450 i 550 jedinki. Efekat kontrolisanog načina gajenja je prikazan postignutim vrednostima telesne mase, prirasta, konzumacije i konverzije hrane. Tretman sa većim nivoom proteina u ishrani i manjom gustinom naseljenosti se pokazao kao najpogodniji za proizvodnju fazana u prvih šest nedelja.

By means of first-principles calculations using spin-polarized generalized gradient approximation method and ultrasoft pseudopotentials, the electronic and magnetic structure of the recently synthesized orthorhombic phase of bilayer manganite Ca(2.5)Sr(0.5)GaMn(2)O(8) compound is obtained. Our calculations have shown that the specific antiferromagnetic ordering, in accordance with experimental findings, is the most stable one. The total energies calculated for the several possible magnetic states of the title compound in the orthorhombic phase enable us to estimate spin exchange interactions for nearest J(nn)=-1.60 meV and next(-) nearest neighbors J(nnn)=-0.21 meV. Calculated Curie-Weiss temperature in the mean-field approximation is in excellent agreement with the measured magnetic phase transition temperature.

Based on the organizational and economic models a trial was conducted to analyze the effect of breeding and utilization parameters changes on the economic effects of roe deer husbandry. The conclusion suggests the possibility of changing these parameters within the biological limits to improve the business results with regard to the current. A decline of the loss from 14 to 10% can contribute to a 3.26-fold revenue increase, a 19% greater economic efficiency and a 2.65-fold greater production profitability rate. Increasing the number of animals from 25 to 30% tends to increase revenue 4-fold and the coefficient of economic efficiency by 28%. Increasing the number of roe deer from the current 4.46 to the biological optimum of 6 animals on 100 ha of the game production area and decreasing loss to 10%, the economic efficiency of production would increase by 83% contributing to a revenue of 56.46 Euro (compared with the current 2.71 Euro) on the 100 ha of the production area. U radu je ispitivan uticaj uzgojno-eksploatacionih parametara na ekonomske efekte gazdovanja srnećom divljači. Istraživanje je zasnovano na organizaciono- ekonomskim modelima koji odražavaju uslove i rezultate poslovanja lovišta "Barajevska reka", s jedne strane, i promeni tih parametara s druge strane. Utvrđeno je da se pomeranjem parametara u biološki prihvatljivim granicama (prirasta, brojnosti i gubitaka) značajno mogu poboljšati ekonomski rezultati gazdovanja populacijama srna.

An overview of physiological role of certain minerals and vitamins is given in the paper, and also the ways of their additional supply in our hunting fields. The size of roe deer’s requirements in minerals and vitamins varies throughout the year and depends on their age, sex, physiological state and other factors. The needs in minerals, first of all in calcium and phosphorus, are largest in lactating animals, than in the last third of pregnancy and in males when their antlers grow. Those needs are fulfilled form the natural feeds. However, for the maximal growth of antlers and obtaining of quality trophies the natural feeds may not be sufficient, which may happen in some years and in certain terrains. The requirements in micro elements and fat soluble vitamins are most successfully fulfilled when the mineral - vitamin premixes are included in concentrate mixtures, and with the use of salt blocks. . U radu je dat pregled fiziološke uloge pojedinih mineralnih materija i vitamina, potrebe srna u mineralima i vitaminima, kao i postupci njihovog dopunskog snabdevanja u uslovima naših lovišta. Veličina potreba u mineralnim materijama i vitaminima varira u toku godine i zavisi od starosti grla, pola, fiziološkog stanja i drugih faktora. Potrebe u mineralnim elementima, pre svega kalcijumu i fosforu, najveće su u dojnih jedinki, zatim u zadnjoj trećini bremenitosti, kao i u mužjaka u periodu rasta rogova. Ove potrebe se zadovoljavaju iz prirodne hrane. Međutim, za maksimalan porast parogova i dobijanje kvalitetnih trofeja, prirodna hrana može biti nedovoljna, što dolazi do izražaja u nekim godinama i na nekim terenima. Potrebe u mikroelementima i liposolubilnim vitaminima najefikasnije se zadovoljavaju upotrebom mineralno-vitaminskih premiksa uključenih u smeše koncentrata, kao i upotrebom blokova soli za lizanje. .

The research on fecundity, losses of calves and real gain of roe deer was carried out in the hunting ground of "Barajevska reka". The losses were found in 60 calves, fecundity in 29 does, and real gain of roe deer was monitored during three years in three different hunting reserves. The losses of calves account for 24.59% of total roe deer losses and are the result of the activity of biotic and abiotic environmental factors, as well as the influence of anthropogenic factors. Average potential roe deer fecundity in this sample was 1.54 embryos per gravid doe. Real gain of roe deer varied depending on the year and hunting reserve and ranged from 0.65 to 1.11 calves per gravid doe. The greatest influence on the real gain had, apart from the year, type of management in the hunting reserve. Proceeding from the abovementioned, hunting of roe deer in one hunting ground must be performed within hunting reserves, in accordance with the real gain within them. Istraživanja plodnosti, gubitaka lanadi i realnog prirasta srna sprovedena su u lovištu "Barajevska reka". Gubici lanadi čine 24,59% ukupnih gubitka srna, i nastaju usled dejstva biotičkih i abiotičkih faktora sredine, kao i pod uticajem antropogenog faktora. Prosečna potencijalna plodnost srna u ovom uzorku bila je 1,54 embriona po gravidnoj srni. Realni prirast srna varirao je u zavisnosti od godine i lovnog revira u rasponu od 0,65 do 1,11 lanadi po jednoj polno zreloj srni.

In appropriate habitat conditions roe deer are able to fulfill all their needs on various natural feeds. The reasons for additional feeding of this game are: feed deficiency during the winter, decreasing in size of natural habitats due to human activity, and the wish to achieve faster gain and better quality of trophies. There are several ways to improve feeding of wild herbivores: various agro-technical measures, organized production of certain plant cultures and additional feeding. U odgovarajućim uslovima staništa srne su u stanju da sve svoje potrebe zadovolje raznovrsnom prirodnom hranom. Razlozi za prihranjevanje ove vrste divljači su: deficit hrane u zimskim uslovima, smanjenje prirodnih staništa zbog čovekove aktivnosti, kao i težnja da se postigne brži porast životinja i kvalitetniji trofeji. Postoji više načina za unapređenje ishrane divljih biljojeda: odgovarajuće agrotehničke mere u lovištima, plansko gajenje pojedinih biljnih kultura u lovištima i dodatna ishrana divljači.

Ultrafine Ce1-xNdxO2-delta (x = 0-0.25) powders were synthesized by self-propagating room temperature synthesis. Raman spectra were measured at room temperature in the 300-700 cm(-1) spectral range. The shift and asymmetric broadening of the Raman F-2g mode at about 454 cm(-1) in pure and doped ceria samples could be explained with combined size and inhomogenous strain effects. Increased concentration of O2- vacancies with doping is followed by an appearance of new Raman feature at about 545 cm(-1). (c) 2005 Elsevier Ltd. All rights reserved.

Mean weights for young mails was 35,12 kg, and for females 30,44 kg. Maximum weight for young mails was 55,7 kg, and for females 52 kg, while minimum was 12,2 kg and 16,8 kg. Average weight for adult mails was 86,36 kg, ranged from 50,3 to 121 kg, while average weight for adult females was 81,35 kg, ranged from 42,5 kg to 122 kg. Average dressed mass for young mails was 82,87 %, for young females 81,65%, adult mails 82,71% and adult females 83,45%. U radu su prikazane telesne mase divljih svinja različitih kategorija u intenzivnom načinu gajenja ove vrste u lovištu "Crni lug". Prosečne mase odstreljene muške nazimadi iznosile su 35,15 kg, ženske nazimadi 30,44 kg. Kod divljih veprova parosečna masa je 86,36 kg, sa variranjem u rasponu od 50,3 do 121 kg., dok kod krmača 81,63 kg, sa variranjem od 42,5 kg do 122 kg. Randman kod muške nazimadi iznosio je prosečno 82,87%, ženske nazimadi 81,65%, veprova 82,71% i krmača 83,45%.

One of the methods for powder synthesis that is both cost and time effective is the self-propagating room temperature synthesis. We applied this method to synthesize rare earth doped ceria nanopowders. Since they exhibit very high ionic conductivity at intermediate temperatures these compositions are attractive for a new generation of nanostructured ceramics applicable in solid oxide fuel cells as electrolytes. In this paper we paid our attention to the reaction based on methathetical pathway, whereby solid solution nanopowders of rare earth elements with ceria were obtained at room temperature. Compositions of Ce1-xRexO2-delta (Re = Y, Nd) were synthesized with x ranging from 0 to 0.20. The reaction course is discussed and the properties of the obtained powders are presented. Recent Developments in Advanced Materials and Processes, 7th Conference of the Yugoslav-Materials-Research-Society (Yu-MRS), Sep 12-16, 2005, Herceg Novi, Montenegro

Natural gas is a primary energy resource with the indicated highest annual growth of global demand and consumption in all recent forecasts. The chemical industry is a leading non-seasonal consumer of natural gas, mainly because it utilizes natural gas both for energy and as a feedstock. Specifically, these major and established gas consumers in chemical industry enjoy worldwide a recognized status of "privileged clients" of gas industry and as such have been granted the most favorable commercial terms. Unfortunately, that is not the case in Serbia. This paper emphasizes the economic logic and rationale of demands of major industrial users regarding harmonization of gas prices with EU standards. Prirodni gas je konvencionalni primarni energent sa projektovanim najdinamičnijim globalnim rastom potrošnje. Vrlo veliki i kontinualni industrijski potrošači prirodnog gasa, a posebno oni iz oblasti bazne hemijske industrije koji gas troše i kao energent i kao sirovinu, svuda u svetu su klijenti kojima industrija gasa posvećuje posebnu pažnju i obezbeđuje najpovoljniji komercijalni status. Nažalost, samo u Srbiji nije taj slučaj. Ovaj rad pokušava da još jednom naglasi ekonomsku logiku opravdanih zahteva vrlo velikih potrošača u srpskoj industriji za harmonizacijom cena prirodnog gasa saglasno standardima EU.

With the appropriate agro technical measures, above all with melioration of flood areas and wetlands, also with cultivating, fertilizing and cutting, it is possible to achieve changes in floristic composition in parts of hunting areas, and in that way to increase quality and quantity of natural food. It is also possible to produce plants with the purpose to obtain better feeding for game. The seeded areas should be formed in several separated and distant places in the hunting area, which allows for the natural distribution of animals searching for food. The seeding of crops should be organized in the system of "green conveyer" in order to obtain continual appearance of fresh green feeds during the vegetation period. Seeded fields should have a fence if possible, and animals should be allowed to enter them only when plants reach the optimal phase for utilization. If animals are kept in gutters or pens the additional feeding with freshly cut green mass is possible. Odgovarajućim agrotehničkim merama, pre svega hidromelioracijom vodoplavnih i vlažnih zemljišta, zatim drljanjem, đubrenjem i košenjem može se postići promena botaničkog sastava u područjima lovišta, i time povećati kvalitet i kvantitet prirodne hrane. Pored toga, u lovištima se mogu planski gajiti kultivisane biljne kulture u cilju proizvodnje kvalitetnije hrane za divljač. Zasejane površine treba formirati na više međusobno udaljenih mesta u lovištu, kako bi se time izvršila i prirodna disperzija životinja u potrazi za hranom. Setva kultura treba da bude organizovana po modelu zelenog konvejera, da bi se omogućilo kontinuirano pristizanje zelene hrane u toku vegetacije. Polja sa zasejanim kulturama treba po mogućstvu ograditi, a divljači dopustiti ulazak tek kada biljke stignu u optimalnu fazu za korišćenje. Ukoliko se životinje drže u gaterima i oborima, moguća je i dodatna ishrana u vidu nakošene zelene mase.

Trophy value and age of hunted roebucks from tourist hunting game in different types of hunting grounds were studied in this paper. Analysis included 159 trophies assessed according to CIC formula. Average trophy value determined for plain type of hunting ground was 90.80 points, whereas for hilly type of hunting area it was 84.39 points. Plain type of hunting ground characterized by older average age compared to the hilly type, but these differences are not statistically significant. U radu je izvršeno proučavanje trofejne vrednost i starost odstreljenih srndaća iz lovno-turističkog odstrela u različitim tipovima lovišta. Analizom je obuhvaćeno 159 trofeja ocenjenih po formuli CIC-a. Za ravničarski tip lovišta utvrđena je prosečna trofejna vrednost od 90,80 poena, dok za brdski tip lovišta ona iznosi 84,39 poena. Za ravničarski tip lovišta utvrđena je veća prosečna starost u poređenju sa brdskim tipom, ali ove razlike nisu statistički značajne.

The origin of the insulating ground states and the charge disproportionation in the two Fe-based perovskite oxides, viz., CaFeO3 and La1/3Sr2/3FeO3, are examined from ab initio electronic structure calculations based on the density-functional methods. We find that correlation effects beyond the local density approximation as well as lattice distortions are necessary to describe the electronic properties of both compounds. It is the intricate interplay between lattice distortion and correlation effect that describes both the charge disproportionation and insulating ground state within the band theory, as is observed in these compounds.

This paper presents the results of red deer settling in the large forest complexes in Serbia, south of the rivers Sava and Danube. Comparative analysis was carried out in 4 hunting-rearing centres - Lomnička Reka, Miloševa Voda, Kumovac and Valmište. It was found that the pre-project activities and phase planning of red deer settling are mainly performed pursuant to the IUCN guidelines for reintroduction. However, the preparation and settling of the initial stock have not been performed professionally. After settling in the hunting-rearing centres, red deer adapted to the new site, but its complete monitoring was performed only while the initial stock was in the initial ground. According to the criteria for the assessment of the reintroduction success, settlement of red deer in "Lomnička Reka", "Miloševa Voda" and "Valmište" so far can be assessed as successful. However, the most important goal of the settling, to form natural populations which enable a normal hunting management has not yet been achieved. U radu su prikazani rezultati naseljavanja jelenske divljači u velike šumske komplekse Srbije, južno od Save i Dunava. Uporedna analiza je izvršena za 4 ograđena uzgajališta - Lomnička reka, Miloševa voda, Kumovac i Valmište. Ustanovljeno je da su pred projektne aktivnosti i faza planiranja naseljavanja jelenske divljači, uglavnom, izvršene u skladu sa IUCN uputstvima za reintrodukcije. Nasuprot tome, priprema i naseljavanje početnog zapata nisu izvršene na profesionalan način. Posle naseljavanja u ograđena uzgajališta, jelenska divljač se dobro prilagodila na novo stanište, ali je njen potpuni monitoring izvršavan samo dok je početni zapat bio u prihvatilištu. Prema kriterijumima za ocenjivanje uspeha reintrodukcije, dosadašnje naseljavanje jelenske divljači u "Lomničkoj reci", "Miloševoj vodi" i "Valmištu" može da se oceni kao uspešno. Međutim, najvažniji cilj započetog naseljavanja da se formiraju prirodne populacije koje omogućuju normalno lovno gazdovanje, još nije ostvaren.

In this paper an overview was given of feeding roe deer and red deer in different conditions. As herbivores and ruminants, these animals eat a large number of feeds, like pasture or browse, and feed selection depends mostly on season. Being selective grazers they obtain relatively high level of protein and low level of fiber in their diets. Additional feeding is required if high gain is wanted and better quality of trophy, which depends on the quality and quantity of available natural feeds and the season. Additional feeds can be hay, roots and tubers, silage, sugar beet pulp and brewers grains, and among concentrates cereal and legume grains including the feed mixes produced by feed mills. Farm production of red deer requires very intensive additional feeding because it is necessary to meet the nutritive requirements of animals. U radu je dat pregled domaće i strane literature, koja se odnosi na ishranu srna i jelena u različitim uslovima. Kao herbivori i preživari, ove životinje u ishrani koriste veliki broj biljnih vrsta, u vidu paše ili brsta, a izbor hraniva zavisi od sezone. Selektivnim konzumiranjem postiže se veći nivo proteina i manji celuloze u obrocima. U cilju postizanja većih prirasta i boljeg kvaliteta trofeja neophodna je dopunska ishrana, koja u kvantitativnom i kvalitativnom smislu zavisi od raspoložive prirodne hrane i sezone. Za dopunsku ishranu koriste se seno, korenasto-krtolasta hraniva, silaža, repini rezanci i pivski treber, a od koncentrata zrnevlje žita i leguminoza, kao i industrijski proizvedene smeše koncentrata. Farmski uslovi gajenja jelena zahtevaju veoma intenzivnu dopunsku ishranu, uz poštovanje određenih preporuka.

Due to the great income from their hunting, pheasants are the most widely populated feathery game in our hunting grounds. Captive breeding system is one of the methods to secure the sufficient number of pheasants. This paper presents the study results on the effects of diet and population density on pheasant production by artificial breeding. Fazan je vrsta pernate divljači koja se najviše unosi u lovišta zbog velikog lovnog pritiska. Samim tim potrebno je obezbediti dovoljnu brojnost, što se postiže veštačkim načinom gajenja. U radu su prikazani rezultati uticaja ishrane i gustine naseljenosti na proizvodnju fazana veštačkim načinom gajenja.

Spring census of red deer population decreased from 1882 to 1343. In the same period density on 100 ha of hunting ground decreased from 16.0 to 11.4. In the last year, proportion in the mature part of population was 1.17 mail : 1 female (593 mail : 507 female). Level of usage was between 19.0 and 30.7% of spring census. U radu je prikazana analiza brojnog stanja i strukture odstrela jelenske divljači u lovištu „Kozara". Prolećno brojno stanje jelenske divljači smanjilo se od 1882 grla (1992. god.) na 1343 grla (2003. god.). U istom periodu gustina naseljenosti na 100 ha površine lovišta smanjila se od 16,0 na 13,4 grla. Odnos polova reproduktivnog delà populacije karakteriše stalna prevaga muškog pola koja u poslednjoj godini iznosi 1,17 M : 1 Ž (593 M : 507 Z). Godišnji stepen korišćenja varirao je u intervalu 19,0-30,7 % od prolećnog brojnog stanja.

Red deer trophy values in hunting place "Dragićev hat" are very high. Five trophies are valued higher than 170 points (CIC) during hunting season 2002/2003, while most valuable was 231 point. In the class of 6 tin antlers there are incensement in all analyzed parameters of trophy evaluation while circumference of antler shown significant differences related to last year. Trofejna vrednost jelena u ograđenom delu lovišta Deliblatske peščare "Dragićev hat"je vrlo visoka. U toku 2002/2003 godine odstreljeno je 5 jelena sa trofejom u medalji pri čemu najjači trofej je ocenjen sa 231 poenom. Kod parogova sa 6 parožaka došlo je do povećanja svih analiziranih elemenata ocene trofeja, od kojih su obimi paroga pokazali i statistički značajne razlike u odnosu na prethodnu godinu.

The dynamics of abundance and structure (age and gender) of deer population was studied in the hunting ground Kozara, as well as the trophy value and age structure of hunted deer. Deer population structure during the study period was disturbed compared to the optimal values for this game species. First of all, a high population density was recorded amounting to more than 12 heads per 100 ha. The trophy value of deer hunted in this hunting ground is high. However, based on the analysis of the trophy and age structure of hunted deer, it was concluded that at the end of the study period, despite the greater shooting of old deer, the number of heads with golden medals was reduced, while the number of heads with silver and bronze medals increased significantly. U ovom radu je proučavana dinamika brojnosti i struktura (starosna i polna) populacije jelenske divljači u lovištu Kozara, kao i vrednost trofeja i starosna struktura ulovljenih jelena. Struktura populacije jelenske divljači je u proučavanom periodu bila poremećena u poređenju sa optimalnim vrednostima za ovu vrstu divljači. Pre svega, utvrđena je velika gustina naseljenosti koja je iznosila više od 12 grla na 100 ha. Vrednost trofeja ulovljenih jelena u ovom lovištu je visoka. Međutim, na osnovu analize trofejne i starosne strukture ulovljenih jelena utvrdili smo da se na kraju proučavanog perioda uprkos većem odstrelu starih jelena smanjio broj grla u zlatnoj medalji, dok se značajno povećao broj grla u srebrnoj i bronzanoj medalji.

In this paper, a modeling of the mean value of the length of the red deer discarded antlers from region of Veliki Jastrebac is done. The modeling is based on the measurement done in region of Veliki Jastrebac and on data from region of Baranja and North-Western Bačka. The developed general model of the considered growth processes are based on data from region of Baranja and North- Western Bačka. The mentioned general models are developed using both the known maximum and mean values of the length of red deer antler. The new measured data from region of Veliki Jastrebac corresponds to 3, 4, 5 and 6 age of red deer. U radu je prikazano modeliranje srednjih vrednosti rasta dužine grana odbačenih parogova jelena iz regiona Veliki Jastrebac. Modeliranje je bazirano na merenjima koja su obavljena u regionu Veliki Jastrebac kao i na podacima iz regiona Baranje i severozapadne Bačke. Podaci koji važe za region Baranje i severozapadne Bačke iskorišćeni su za definisanje odgovarajućih opštih modela posmatranih procesa rasta. Pomenuti opšti modeli dobijeni su na osnovu srednjih i maksimalnih vrednosti dužine grana rogova jelena. Novi podaci odnosno merenja koja su obavljena u regionu Veliki Jastrebac obuhvataju trogodišnje, četvorogodišnje, petogodišnje i šestogodišnje jelene iz pomenutog regiona.

To analyze influence of variability of estimated elements on the total trophy value of roe deer (Capreolus capreolus L), data on the trophies of 801 roebucks from two regions in Serbia (Backa and Banat) were used. The length of the antlers, weight and volume accounted for 12,15%, 35,17% and 44,66% respectively, in the total estimate of trophy value. Taking into account all three elements, their participation in the total estimate of trophy value comes to 87,98%. Uticaj dužine, mase i zapremine paragova na ukupnu trofejnu vrednost ispitanje na trofejima srndaća koji potiču iz regiona Bačke i Banata, utvrđeno je da u ukupnoj oce-ni trofeja dužina parogova učestvuje sa 12,15%, masa rogovlja 35,17%, dok zapremina parogova učestvuje sa 40,66%. Učešće sva tri elementa u ukupnoj oceni trofeja je 87,98%.