286 research outputs found

    Analysis of requirements and the necessary investments in the railway station adjustment program for persons with special needs

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    People with special needs from the standpoint of social communities have specific requirements for access, mobility, entry and exit of railway vehicles designated to transport passengers. The EU has defined standards and requirements related to persons with special needs. The aim of this paper is to analyze the technical requirements of equipment and identify the necessary investment funds related to the increasing mobility of persons with special needs in the rail transportation system. This analysis would be one of the initial steps approaching the conditions and requirements that apply in the EU in adapting the system of transport for people with special needs

    COMPARISON OF LINEAR AND NONLINEAR STATISTICS METHODS APPLIED IN INDUSTRIAL PROCESS MODELING PROCEDURE

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    This paper presents the comparison of Multiple Linear Regression Analysis (MLRA) and Artificial Neural Networks (ANN) as the statistical analysis tools. Most influential statistical parameters for choosing right modeling tool are evaluated in this investigation. Investigation was performed on real statistical data set obtained after measurements of the process parameters underindustrial conditions

    Serbia: Another endemic region for canine ocular thelaziosis

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    Canine thelaziosis is widely distributed in Far Eastern countries and considered endemic in many European countries, between latitudes 39 and 46 N. Because of the unique relationship between the causer and its intermediate and final hosts, the genus Thelazia is one of the most specialized nematodes in the taxon. Thelazia callipaeda (superfamily: Thelazioidea) infects the conjunctivas of several mammalians, including dogs and humans. Since dogs may also represent a reservoir of infection for humans, the aim of the study was to show the epidemiological situation of thelaziosis in dogs in the Republic of Serbia, after it was first diagnosed in 2014, which is crucial for the successful treatment, control, and prevention of the disease. The research was performed on privately owned dogs in the period from the end of April 2013 to the end of October 2015 in 7 different regions in Serbia. Adult parasites were mechanically removed from dogs with manifested ocular disorders, and thelaziosis was diagnosed in 178 out of 501 animals. The high prevalence of T. callipaeda in dogs (35.52%) in the analyzed areas of Serbia indicates the endemicity of eyeworm infestation in these areas

    State and ways further development in cheesemaking

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    IzvrÅ”ena je sažeta analiza stanja industrijskog sirarstva u naÅ”oj zemlji i predviđanja daljih pravaca razvoja. Utvrđeno je da je naÅ”e sirarstvo postiglo relativno visok stepen razvoja i pored toga Å”to u naÅ”oj zemlji nisu reÅ”eni neki osnovni uvjeti, kao Å”to su: količina i kvaliteta mlijeka, proizvodnja proteolitičkih fermenata za koagulaciju mlijeka, neke čiste kulture mikroorganizama i dr. Najbolji rezultati postižu se u specijaliziranim sirarskim pogonima. U daljem razvoju veću pažnju treba posvetiti istraživanju mogućnosti za industrijsku proizvodnju renomiranih domaćih vrsta sireva i povećanju rentabilnosti sirarske proizvodnje kroz veće iskoriÅ”tavanje sastojaka mlijeka posredstvom ultrafiltracije i obrazovanja koagregata. Analizirane su prednosti i nedostaci ovih postupaka i postignuti rezultati u naÅ”oj zemlji.A concise analysis was made, concerning the state of industrial cheese making production in our country as well as the concept of further ways oj development. It has been stated that cheesemaking in our country has achieved a relatively high degree of development, in spite of basic problems in this^ industry that have not been solved, for example: the quantity and the quality of milk, the production of proteolitic enzimes for milk coagulation, microbiological culture problems and some other problems. The best results have been obtained in the specialized cheese making factories. In further development of cheesemaking more attention should be paid to searching the possibilities for industrial production of some renowned autochthonic cheese varieties, as well as to the improvement of cheese manufacture economics. The latter can be achieved by greater incorporation of milk components into cheese using the ultrafiltration process or the formation of protein coagregates, with subsequent coagulation. Advantages and disadvantages of these procedures, as well as the attained results in resolving the encountered problems in Yugoslavia, have been analyzed

    Neonatal outcome following exposure to organophosphorous pesticides

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    The aim of our study was to determine the neonatal outcome in mothers and children exposed to organophosphorous pesticides (OP). We found that 22.4% pregnant women were exposed to organophosphorous pesticides. OP pesticide concentration was higher in breast milk, newborn sera than maternal sera. Newborn parameters such as birth weight, birth length, head circumference, Apgar score and presence of meconium, as well as gestational age of delivery, showed no significant difference between the two groups. However, postpartum weight loss, hospitalization duration, levels of newborn bilirubin and glycaemia differed significantly between the two groups. Morbidity and presence of CNS disorders were six times and more than twelve times higher, respectively, in the OP-exposed than in the OP pesticide non-exposed group

    Measurement of electroweak production of a W boson in association with two jets in protonā€“proton collisions at āˆšs=13Te

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    A measurement is presented of electroweak (EW) production of a W boson in association with two jets in protonā€“proton collisions at s=13Te. The data sample was recorded by the CMS Collaboration at the LHC and corresponds to an integrated luminosity of 35.9fb-1. The measurement is performed for the ā„“Ī½jj final state (with ā„“Ī½ indicating a leptonā€“neutrino pair, and j representing the quarks produced in the hard interaction) in a kinematic region defined by invariant mass mjj>120Ge and transverse momenta pTj>25Ge. The cross section of the process is measured in the electron and muon channels yielding ĻƒEW(Wjj)=6.23Ā±0.12(stat)Ā±0.61(syst)pb per channel, in agreement with leading-order standard model predictions. The additional hadronic activity of events in a signal-enriched region is studied, and the measurements are compared with predictions. The final state is also used to perform a search for anomalous trilinear gauge couplings. Limits on anomalous trilinear gauge couplings associated with dimension-six operators are given in the framework of an effective field theory. The corresponding 95% confidence level intervals are -2.3<cWWW/Ī›2<2.5Te-2, -8.8<cW/Ī›2<16Te-2, and -45<cB/Ī›2<46Te-2. These results are combined with the CMS EW Zjj analysis, yielding the constraint on the cW W W coupling: -1.8<cWWW/Ī›2<2.0Te-2

    Raznolikost fitopatogenih gljiva na semenu soje u Srbiji

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    Soybean is one of the most important industrial crops in the world. The rich nutritional content of the seed is the reason for the increased cultivation of this crop all over the world. However, a large number of phytopathogenic fungi that exist in soybean seeds can reduce the nutritional content, germination, and seed vigor. Soybean seed samples were collected from experimental fields in seven locations in Vojvodina Province, Serbia in the period 2016-2018. From each sample, 100 seeds were randomly selected. Seeds were surface-disinfested in 4% sodium hypochlorite for 5 min, washed two times in sterile water, and dried on a filter paper. All 100 seeds were placed in 20 Petri dishes with standard potato dextrose agar medium (PDA), five seeds in each, and incubated at 22 Ā± 2Ā°C for seven days, under 12 h of alternating light/dark conditions. The first assessment was performed on the fourth day after isolation. The health status analysis of soybean seed showed that Peronospora manshurica, Macrophominaphaseolina, Botrytis cinerea, Cercospora kikuchii as well as the species from genera Alternaria, Diaporthe, and Fusarium had colonized soybean seed in Serbia over three years. Species from the genus Alternaria and Peronospora manshurica were dominant in all three examined years. Furthermore, it has been noticed that weather conditions, location, and cultivar significantly influenced the intensity of the infection. The results of this study have shown which pathogens pose a threat to successful soybean seed production and help in finding preventive measures to control these pathogens during vegetation.Soja je jedna on najznačajnih gajenih industrijskih biljnih vrsta na svetu. Bogat nutritivni sadržaj zrna zaslužan je za sve veću učestalost gajenja ove industrijske biljke Å”irom sveta. Međutim, veliki broj fitopatogenih gljiva egzistira u semenu soje i nepovoljno utiče na hranljivi sadržaj zrna pa samim tim i na smanjenu klijavost i životnu sposobnost. Zdravstveni pregled semena soje u trogodiÅ”njem periodu od 2016. do 2018. godine, pokazao je da fitopatogene vrste iz rodova Alternaria, Diaporthe i Fusarium, kao i vrste Peronospora manshurica, Macrophominaphaseolina, Botrytis cinerea, i Cercospora kikuchii egzistiraju u semenu soje prikupljenom iz sedam lokaliteta u Srbiji. Ipak, P. manshurica i vrste iz roda Alternaria pokazale su se kao najdominantnije vrste u sve tri godine. Takođe, ustanovljeno je da vremenski uslovi, lokalitet gajenja i odabir sorte značajno utiču na intenzitet zaraze. Rezultati ovog istraživanja pokazuju koji patogeni predstavljaju pretnju uspeÅ”noj semenskoj proizvodnji soje i pomažu u pronalaženju preventivnih mera za suzbijanje ovih patogena u toku vegetacije

    The c20068t gene variant in the 3 ' end of the prothrombin gene and recurrent pregnancy loss: a pilot study

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    Recurrent pregnancy loss (RPL) is a health problem affecting up to 5% of women of reproductive age. Several thrombophilic risk factors might contribute to RPL. To investigate relationship between a novel C20068T gene variant in the 3' end of prothrombin gene and RPL, we tested 153 women with RPL and 111 controls for the presence of this gene variant. In patients, we have detected four heterozygous (2.61%) and no homozygous carriers. In controls, no carriers were detected. Our results indicate higher prevalence of C20068T gene variant in women with RPL but this difference was not statistically significant. However, in patients who suffered 5 or more RPL, frequency of C20068T gene variant was significantly increased compared to controls (12.5% vs. 0%, P = 0.02). This is the first study which points out a possible role of C20068T gene variant in etiology of RPL, but larger studies should be carried out to confirm our findings

    Raspodela olova u vodi i njegova asocijacija sa elementima u sedimentu jezera "Barje" (Leskovac, Jugoslavija)

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    The lead concentrations in the water of the "Barje" lake are presented for the years 1995 to 1998. Sequential extraction was applied to estimate the chemical association of lead in the sediments of the "Barje" lake. Several lead fractions showed highly significant correlations with the corresponding substrate (step II: Mn-oxyhydroxides; step III: Fe-oxyhydroxides) suggesting that lead carbonates were incorporated with amorphous iron and manganese hydroxides. An explanation for this relation can be in the same anthropogenic source of these elements.Predstavljena je koncentracija olova za jezero "Barje" od 1995 do 1998. godine. Sekvenciona ekstrakcija je primenjena za proučavanje hemijskih asocijacija olova u sedimentima jezera "Barje". Visoko signifikantne korelacije pojedinih frakcija olova sa odgovarajućim supstratima (druga faza: Mn oksihidroksidima; treća faza: Fe oksihidroksidima) pokazuje da su olovo-karbonati inkorporirani sa amorfnim hidroksidima gvožđa i mangana. ObjaÅ”njenje se može potražiti u istom antropogenijskom izvoru

    Impact of acquired and genetic factors on thrombophilic phenotype in FV Leiden mutation carriers

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    FV Leiden mutacija je veoma značajan genetički faktor rizika za pojavu venskog tromboembolizma (VTE). U okviru ove studije analizirana je klinička slika i uticaj stečenih i genetičkih faktora rizika u grupi od 100 bolesnika, nosilaca FV Leiden mutacije (95 heterozigota i 5 homozigota). Devedeset jedan bolesnik je imao VTE, sa trombozom dubokih vena donjih ekstremiteta kao najčeŔćom manifestacijom. Kod 68,6% žena bio je prisutan neki od stečenih faktora rizika, dok je to bio slučaj kod 28,6% muÅ”karaca. Mutacija FII G20210A je detektovana kod 9,5%, MTHFR 677TT kod 8,4%, a obe mutacije su bile prisutne u 2,1% heterozigotnih nosilaca FV Leiden mutacije. Rezultati ove studije ukazuju na značaj poznavanja udruženih faktora rizika kod pacijenata koji su nosioci FV Leiden mutacije.FV Leiden mutation is an important genetic risk factor for venous thromboembolsm (VTE). In this study we have analyzed clinical manifestation and the impact of other genetic and acquired risk factors in 100 patients (95 heterozygous and 5 homozygous) carriers of FV Leiden mutation. Among these patients, 91 experienced VTE, with down limb deep vein thrombosis as the most frequent manifestation. An acquired risk factor was present in 68.6% of women, whereas this was the case in 28.6% of men. FIIG20210A was present in 9.5%, MTHFR 677TT in 8.4% and both mutations in 2.1% of the heterozygous FV Leiden carriers. Our results suggest that knowledge of coexisting factors predisposing to VTE is very important for FV Leiden mutation carriers and may contribute to the prevention of VTE episodes
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