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Search Results: 1 - 10 of 88282 matches for " Juri?i? Branislav "
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Analysis of the biological spectrum of vascular flora of Ravni Srem flood forests
JuriiBranislav,Obratov-Petkovi? Dragica,Bjedov Ivana,Bojat Nenad
Glasnik ?umarskog Fakulteta , 2011, DOI: 10.2298/gsf1104057j
Abstract: One of the essential analyses performed during the floristic study of a region is the analysis of the biological spectrum. The analysis of the biological spectrum of the flora includes the determination of the type of life form for each taxon described in the flora of the study region. If it is considered that life form is a specific structural-functional response to the environmental effects and the result of the adaptation during the species evolution, it is clear that the basic characteristics of the site are more or less reflected in any life form. This fact is confirmed by the analysis of the biological spectrum of the flora of Ravni Srem. The analysis of the Ravni Srem flora shows the domination of the hemicryptophytes and the subdomination of the phanerophytes with a considerable participation of the therophytes.
Phytogeographical analysis of vascular flora of Ravni Srem flood forests (Vojvodina, Serbia)
JuriiBranislav,Obratov-Petkovi? Dragica,Bjedov Ivana,Bojat Nenad
Glasnik ?umarskog Fakulteta , 2011, DOI: 10.2298/gsf1104041j
Abstract: The aim of phytogeographical analysis was to determine the plant species origin, genesis and migrations. The study results contribute to the knowledge of phytogeographical classification of the particular regions. The flora structure and composition was determined based on the effects of different chorions. The aim of the floristic research of flood forests of Ravni Srem was to identify the diversity of flora in the region, i.e., in a wider sense, the diversity of flora in Serbia. The phytogeographical analysis was based on floristic research. The identified plant species were classified into the corresponding floral elements, area groups, and area types. The data on their diversity and the degree of representation in the flora of Ravni Srem flood forests were obtained based on the percentage of each area type. It was concluded that the character of the flora of Ravni Srem flood forests was transitional, mostly Eurasian-Central European.
Irena Rap?an,Mladen Jurii,Tomislav Juri
Poljoprivreda (Osijek) , 2004,
Abstract: The Pea is an exquisite protein crop (it contains 20-37% of protein) used for human diet, animal feeding and as sideration. The hypothesis has been set up that the spring field pea for the grain production (cultivar Sobel) will respond differently to the sowing term, stand (840,000 and 1,250,000 plants ha-1) and nitrogen fertilization (0 and 60 kg ha-1The Vinkovci site was known for the grain yield (t ha). In 1997 and 1998 the investigations were conducted via field experiments on semigley soil at Vinkovci sites. Observations and measuring of, for example, phenological phase and more important climatic factors were accomplished during the growing season (temperature and precipitations). The harvest was followed by determination of number of pods, number of grains and grain yield. Obtained results were statistically processed by an adequate method (by a variance analysis of the split-split-plot experiment in four replicates) whereas averages of the reached values were used for the results interpretation.-1) being 0.07-1.72 t ha-1in the first investigation year and 0.14-2.12 t ha-1in the second one. In 1997 thousand grain weight at Vinkovci site varied between 224.75 and 232.63 g whereas in 1998 it was 203.90-249.73 g. Results of the research justified the hypothesis of the optimal sowing date and stand as well as their interaction.
Knji nica Hrvatske akademije znanosti i umjetnosti nekad i danas
Jurii, V.
Kemija u Industriji , 2009,
Abstract: History of Croatian Academy of Sciences and Arts Library
Branislav ?ebe?i
Rudarsko-Geolo?ko-Naftni Zbornik , 2006,
Abstract: At he beginning of the 16th century Saxon miners discovered silver ore in the small settlement Konnradsgr n at south-west slopes of Erzgebirge in the valley Joachimsthal named after the patron saint St. Joachim. The silver coin was named Jochymst(h)aler. The mine and the settlement became a free royal mining city where, thanks to the mint, one of the richest noble families von Schlick arose. 554,44 tons of silver were produced from 1517 till 1900. Together with silver ore cobalt and lead ore were exploited ( in significant quantities from 18th till 19th century) and after that period nickel, bismuth and arsenic ore (19th century). From the listed ores cobalt was produced in largest quantities for enamel production; 1824,23 tons in the period from 1775 till 1851.Next to these ores uranite ore (urani/ni/t) was discovered in the mine. The ore was first used to produce uranium colours used for ceramics, glass and paintings and later to obtain uranium; 8500 tons since 1853 till 1964, a part of which was worked up into radium, to obtain 100gr Ra-. Thanks to the discovery of radioactive- radon water the mine is still active because 20 miners are employed to maintain the part of it from which the radon water is exploited. Jachymov and its surroundigs have become a famous radioactive thermal sanatorium in Europe.
Dictatorship, liberalism and the Pareto rule: Possible and impossible
Economic Annals , 2009, DOI: 10.2298/eka0981045b
Abstract: The current economic crisis has shaken belief in the capacity of neoliberal 'free market' policies. Numerous supports of state intervention have arisen, and the interest for social choice theory has revived. In this paper we consider three standard properties for aggregating individual into social preferences: dictatorship, liberalism and the Pareto rule, and their formal negations. The context of the pure first-order classical logic makes it possible to show how some combinations of the above mentioned conditions, under the hypothesis of unrestricted domain, form simple and reasonable examples of possible or impossible social choice systems. Due to their simplicity, these examples, including the famous 'liberal paradox', could have a particular didactic value.
Logical and historical determination of the Arrow and Sen impossibility theorems
Economic Annals , 2007, DOI: 10.2298/eka0772007b
Abstract: General classification of mathematical statements divides them into universal, those of the form xA , and existential ЭxA ones. Common formulations of impossibility theorems of K. J. Arrow and A. K. Sen are represented by the statements of the form "there is no x such that A". Bearing in mind logical equivalence of formulae ЭxA and x A, we come to the conclusion that the corpus of impossibility theorems, which appears in the theory of social choice, could make a specific and recognizable subclass of universal statements. In this paper, on the basis of the established logical and methodological criteria, we point to a sequence of extremely significant "impossibility theorems", reaching throughout the history of mathematics to the present days and the famous results of Arrow and Sen in field of mathematical economics. We close with specifying the context which makes it possible to formulate the results of Arrow and Sen accurately, presenting a new direct proof of Sen’s result, with no reliance on the notion of minimal liberalism. .
Possibility of "Spongio cement" usage for root canal opturation
Karad?iBranislav 1
Stomatolo?ki Glasnik Srbije , 2002, DOI: 10.2298/sgs0204081k
Abstract: The aim of this study was to evaluate of apical and canal opturation quality of polymethyl metacrylate based material for canal opturation. Investigations were included 60 extracted human single root teeth. Root canals were opturated by standard endodontic technic with three different materials. Teeth were decalcificated and enlightened in 2% methyl salicilate solution. Linear dye penetration was measured with bynocular magnifying glass with 25x magnification. Results showed that the highest apical dye penetration in canals opturated with PMMA based material in relation of AH-26 and Sealapex. Middle value of linear dye penetration in canals opturated with PMMA based material where smear layer was removed was significantly les then in group of teeth where smear layer present.
Pathophysiological mechanism of the developing maxillofacial radicular cyst
?oli? S.,Jurii? M.,Jurii? V.
Acta Chirurgica Iugoslavica , 2008, DOI: 10.2298/aci0801087c
Abstract: The radicular cysts are result of inflammatory process in the periapical tissues associated with necrotic and infected pulps. Humoral and cellular immune responses play a central role in the pathogenesis of these lesions. The most important role in the growth of these lesion have proinflammatore cytokine TNF-α, IL-1 and IL-6. Cytokine can be secreted by macrophages, monocytes and other cells of the immune system and can participate in skeletal homeostasis including osteoclastic formation, and bone resorption in maxillofacial region. The aim of this study is to give a concise review for mechanism of growth of maxilofacial radicular cysts, indicated of clinical aspect, as well as explained role of cytokine in this pathophysiology process.
Fetal cerebral-umbilical Doppler ratio in prediction of fetal distress in patients with preeclampsia
Jurii? Aleksandar,Jurii? ?aklina,Pa?in Vladimir,Vasiljevi? Mladenko
Vojnosanitetski Pregled , 2010, DOI: 10.2298/vsp1006487j
Abstract: Bacground/Aim. The use of color Doppler ultrasonography provides noninvasive observation, confirmation and quantification of pathophysiological processes in fetoplacental circulation in pregnant patients. By blood vessel mapping and the obtained waves spectral analysis it is possible to evaluate vascular resistency of the fetus blood vessels. The aim of the study was to evaluate cerebral-umbilical pulsatility index ratio in fetal circulation in prediction of fetal distress in patients with preeclampsia. Methods. By measurement of pulsatility indices in medial cerebral and umbilical arteries in 400 patients with uncomplicated pregnancy, normal values were calculated for fetuses from 15-40 weeks. In our study group 70 patients with preeclampsia were included. Cerebralumbilical (C/U) ratio was calculated after pulsatility indices in medial cerebral artery and umbilical artery determining by the spectral Doppler analysis of flow velocity waveforms in these vessels. Fetal outcome was analyzed by measurement of the Apgar score at the 5th minute and fetal pH at birth. Results. The mean C/U ratio values in the third trimester of normal pregnancy were between 1.8 and 1.9. The mean C/U ratio values in the patients complicated with preeclampsia were significantly lower comparing to normal pregnancies (ANOVA, p < 0.05). The mean 5th minute Apgar score in the study group was 6.35 ± 1.58, and the mean fetal pH at birth was 7.16 ± 0.15. Linear regression test showed a highly significant correlation between low C/U ratio and fetal pH at birth in patients with preeclampsia (r = 0.49, p < 0.01). Conclusion. The C/U ratio values obtained from spectral Doppler analysis in fetal vessels showed a highly significant correlation with fetal pH at birth in the patients with preeclampsia. The results of our study confirmed the reliability of C/U ratio in estimation of fetal condition in preeclamptic patients. Very low C/U ratio values in patients with preeclampsia indicate that in these fetuses fetal acidosis and fetal distress may be expected.
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