A large series of geospatial data management model

U okviru disertacije je predstavljen je model za upravljanje velikim serijama geoprostornih podataka baziran na Spark platformi. Model je fokusiran na oblak tačaka, s obzirom na njegove specifične karakteristike. Posebno je razmatrano indeksiranje geoprostornih podataka u distribuiranom okruženju bazirano na krivama za popunjavanje prostora. Model podržava osnovne fukcionalnosti poput, strukturiranja i skladištenja podataka, vizualizacije, i geoprostornih analiza. Izvršena je verifikacija kroz niz eksperimenata, uključujući poređenje sa relacionim bazama podataka, i ispitivanje skalabilnosti.The thesis presents a large series of geospatial data management model based on Spark framework. Model is focused on the point cloud geospatial data type due to it’s specific characteristics. Indexing of geospatial data in distributed environment based on space-filling curves is described in detail. The proposed model provides complete set of functionalities like structuring and storing the data, visualization and geospatial analyses. The model is verified through the set of experiments, including comparison to relational databases and scalability assesment

A large series of geospatial data management model

U okviru disertacije je predstavljen je model za upravljanje velikim serijama geoprostornih podataka baziran na Spark platformi. Model je fokusiran na oblak tačaka, s obzirom na njegove specifične karakteristike. Posebno je razmatrano indeksiranje geoprostornih podataka u distribuiranom okruženju bazirano na krivama za popunjavanje prostora. Model podržava osnovne fukcionalnosti poput, strukturiranja i skladištenja podataka, vizualizacije, i geoprostornih analiza. Izvršena je verifikacija kroz niz eksperimenata, uključujući poređenje sa relacionim bazama podataka, i ispitivanje skalabilnosti.The thesis presents a large series of geospatial data management model based on Spark framework. Model is focused on the point cloud geospatial data type due to it’s specific characteristics. Indexing of geospatial data in distributed environment based on space-filling curves is described in detail. The proposed model provides complete set of functionalities like structuring and storing the data, visualization and geospatial analyses. The model is verified through the set of experiments, including comparison to relational databases and scalability assesment

Maligni tumori kod Labrador retrivera koji se koriste za pronalaženje narkotika

The two corpses of police dogs, of Labrador retriever breed used for fi nding narcotics, were sent to the Scientific Veterinary Institute 'Novi Sad', and examined post-mortem, in order to determine the cause of death. Post-mortem examination revealed the presence of neoplastic changes in the mandibular region, pulmonary parenchyma and axillary region. The samples of neoplastic changes were sent to the Laboratory of Patohistology within the Faculty of Veterinary Medicine, University of Belgrade, in order to specify the diagnosis. Histopathology examination revealed an adenocarcinoma in lungs and haemangioendothelioma in axillary region. Is there any role of drug sniffing on the occurrence of neoplasia in Labrador retriever breed is still unknown, but it could be an important factor in the development of neoplasia in these dogs.Dva leša policijskih službenih pasa, rase Labrador retriver koji se koriste za pronalaženje narkotika, dostavljeni su u Naučni institut za veterinarstvo 'Novi Sad', kako bi se na osnovu patomorfološkog pregleda utvrdio uzrok smrti. Tokom obdukcije utvrđeno je prisustvo neoplastičnih promena u mandibularnoj regiji, plućnom parenhimu i aksilarnoj regiji. Uzorci promenjenog tkiva dostavljeni su na Fakultet veterinarske medicine, Univerziteta u Beogradu, u laboratoriju za patohistologiju kako bi se odredila tačna dijagnoza. Patohistološkim nalazom utvrđeno je prisustvo adenokarcinoma u plućima i hemangioendotelioma u predelu aksilarne regije. Kakvu ulogu može imati udisanje narkotika na pojavu neoplazmi kod Labrador retrivera još uvek nije poznato, ali se pretpostavlja da to može biti jedan od faktora u nastanku neoplastičnih promena kod ovih službenih pasa

Epizootiološki značaj Salmonella spp. izolovanih u različitim vidovima živinarske proizvodnje u Južnobačkom i Sremskom okrugu

Salmonella causes local and systemic infections of poultry, which may lead to substantial direct and indirect economic losses, presenting also significant risk to human health. The aim of this study was to monitor the occurrence of certain serotypes of Salmonella spp. isolated on poultry farms in Southern Bačka and Srem regions in the period from 2010 to 2014, as recommended by the Book of rules of early detection, diagnostic, prevention of spreading and eradication of Salmonella spp. We analyzed the results obtained from the laboratory for clinical bacteriology to determine number of salmonella cases. From all samples that have been submitted for bacteriology analysis, salmonellas were isolated from 7.3% samples. Salmonella infantis was isolated from 50.3% of all salmonella-positive samples, mostly from materials supplied from broiler farms. Salmonella enteritidis was most frequently isolated in broiler chickens at the rate of 48.2%. There is an increasing trend in the occurrence of Salmonella enteritidis and Salmonella infantis on poultry farms from year to year. Our research revealed the highest incidence of salmonella isolates in broilers that died during transportation or within the first three days upon arrival of chickens. During the five-year research period, 65 samples from parent flocks (63 from broiler breeders and 2 from parent flocks of layers) were salmonella positive, which makes 8.03% of all positive isolates. It is most likely that salmonella infection occurs due to infection of parent flocks and young chickens are infected trough both vertical and horizontal transmission. .Salmonele kod živine izazivaju infekcije lokalnog i sistemskog karaktera, dovodeći do značajnih kako direktnih tako i indirektnih ekonomskih gubitaka u industrijskom živinarstvu i predstavljaju opasnost po zdravlje ljudi. Cilj ovog rada bio je monitoring određenih sojeva Salmonella spp. propisanih Pravilnikom o utvrđivanju mera za rano otkrivanje, dijagnostiku, sprečavanje širenja, suzbijanje i iskorenjivanje infekcija živine određenim serotipovima salmonella, na teritoriji Sremskog i Južnobačkog okruga u periodu od 2010. do 2014. godine. Analizirali smo rezultate ispitivanja laboratorije za kliničku bakteriologiju. Od ukupno ispitanih bakterijskih infekcija iz kliničkog materijala u ovom petogodišnjem periodu, salmonele su izolovane u 7,3% slučajeva. Ustanovljeno je da je Salmonella infantis izolovana u 50,3% svih pozitivnih uzoraka, najčešće iz materijala dostavljenih sa farmi brojlerskih pilića. Salmonella enteritidis izolovana je u 48,2%, takođe najčešće kod brojlerskih pilića. Prisutan je trend porasta izolata Salmonella enteritidis i Salmonella infantis iz godine u godinu. Našim istraživanjem ustanovili smo da je najviše pozitivnih uzoraka bilo kod brojlera, u transportnim uginućima i uginućima iz prva tri dana starosti. Kod roditeljskih jata bilo je pozitivno 65 uzoraka u ovom petogodišnjem periodu (63 kod teške linije i 2 kod lake linije), što iznosi 8,03 % od svih pozitivnih izolata. Pretpostavlja se da je do infekcije salmonelama moglo doći usled horizontalne i vertikalne infekcije preko roditeljskih jata.

Comparative pathological findings in mute swans (Cygnus olor) naturally infected with highly pathogenic Avian influenza viruses H5N1 and H5N8 in Serbia

The aim of this study was to compare pathological lesions and viral antigen expression in the organs of mute swans (Cygnus olor) naturally infected with highly pathogenic avian influenza virus subtypes H5N1 and H5N8. The examination was conducted on the carcasses of 22 mute swans which died during the avian influenza outbreaks in Serbia in 2006 and 2016-2017. Avian influenza virus subtype H5N8 isolated from mute swans in 2016-2017 was clustered within the 2.3.4.4 Glade group B. After necropsy, lung, liver, spleen, pancreas, kidney and brain tissues were sampled for histopathology and immunohistochemical examination. Avian influenza virus nucleoprotein polyclonal antibodies were used for detecting the viral antigen in the examined tissues. The most significant gross lesions were necrosis and haemorrhages in the pancreas. Major histological lesions were multifocal necroses in the pancreas, spleen and liver, non-purulent encephalitis, lung congestion and oedema. Immunohistochemical demonstration of HPAIV nucleoprotein in pancreas and brain was strongly consistent with histological lesions in both infected groups. Our findings showed that pancreas was the most affected organ in all examined mute swans. In addition to increased mortality rate, similar pathological findings were detected in mute swans naturally infected with highly pathogenic avian influenza viruses H5N1 and H5N8

Drawing history. Stories of rescue during the Holocaust

"... Odluka da se priče o spasavanju Jevreja i Roma iz čeljusti užasa koji su se pripadnicima njihovih zajednica događali tokom Drugog svetskog rata predstave u formi stripa pokazala se kao opravdana još davne 1992. godine kada je Art Špigelman dobio Pulicerovu nagradu za svoj roman Maus. Strip je umetnost koja neposredno, slikom i rečju, komunicira sa svojim čitaocima, a posebno je drag savremenim generacijama naviknutim na slike. Različiti pristupi koje su autorke i autori primenili svedoče i o bogatstvu savremene strip-scene u Srbiji...""... The decision to present the stories about the rescue of Jews and Roma from the jaws of horrors that happened to members of their communities during the Second World War in the form of graphic novels proved to be justified as long ago as 1992 when Art Spiegelman won the Pulitzer Prize for his novel Maus. The graphic novel is an art that communicates with its readers directly, through images and words, and is especially dear to modern generations accustomed to images. The different approaches applied by the authors testify to the richness of the contemporary graphic novel's scene in Serbia..."Sadržaj (content): Priča o Driti / Dragana Radanović ; Priča o Teodoru / Boris Stanić ; Priča o doktoru Savi / Vladimir Pajić ; Priča o Raki / Danica Jevđović ; Priča o Novaku / Jelena Đorđević-Maksimović

Characterization of sodium alginate/D-limonene emulsions and respective calcium alginate/D-limonene beads produced by electrostatic extrusion

In this study, calcium alginate beads immobilizing D-limonene (solid systems) have been manufactured starting from emulsions of this flavor in sodium alginate (liquid systems). The effects of alginate concentration (0.02 and 0.03 g/mL) and flavor content (5 and 10 % w/w) on viscosity, conductivity and stability of emulsions were investigated. The flavor droplets in emulsions are bigger as polymer solution is more concentrated and contains more of the flavor. When emulsions have been subjected to electrostatic extrusion and upon Na+-Ca2+ ion exchange, smaller (similar to 960 to similar to 1450 mm) and less spherical beads were obtained (sphericity factor 0.003-0.21) compared to beads produced by simple dripping technique (without electrostatic field). When wet beads were air dried, they shrunk less if they had higher content of the flavor. Novel mathematical model describing swelling kinetics of dried beads is developed. In this work, D-limonene was efficiently immobilized within Ca-alginate beads (immobilization efficiency similar to 50 to similar to 77%) and its thermal stability was confirmed by TG/MS analysis

Development and validation of an LC-MS/MS method for the determination of adapalene in pharmaceutical forms for skin application

The development and validation of a liquid chromatography-tandem mass spectrometry (LC-MS/MS) method for the determination of adapalene in pharmaceutical forms for skin application were presented in this study. The MS/MS analysis of adapalene was performed by use of three mobile phases, consisted of acetonitrile and a) 0.1 % formic acid, b) 0.1 % trifluoroacetic acid and c) 20 mM ammonium acetate. The strongest signals of parent ion and dominant product ion were obtained in negative mode by use of the mobile phase c). The validation of this method was performed according to the ICH guidelines. Small variations of selected chromatographic parameters (concentration of ammonium acetate, mobile phase composition, column temperature and flow rate) did not affect significantly the qualitative and quantitative system responses, which proved the method's robustness. The method is specific for the determination of adapalene. The linearity was proved in the concentration range of 6.7-700.0 ng mL(-1) (r = 0.9990), with limits of detection and quantification of 2.0 and 6.7 ng mL(-1), respectively. The accuracy was confirmed by calculated recoveries (98.4-101.5 %). The precision was tested at three levels: injection repeatability, analysis repeatability and intermediate precision. The calculated relative standard deviations were less than 1, 2 and 3 %, respectively

Influence of Anticoccidials on Oxidative Stress, Production Performance and Faecal Oocyst Counts in Broiler Chickens Infected with Eimeria Species

The influence of certain anticoccidial drugs on oxidative stress in broiler chickens infected with Eimeria species was assessed. There were two untreated (uninfected and infected), and three groups infected and treated with anticoccidials. The first treated group (Ro) was given robenidine, the 2nd a herbal anticoccidial (Herb) and the 3rd the combination of robenidine and the herbal anticoccidial (Ro+Herb). All infected groups were on day 14 challenged with oral inoculation of oocysts. The activities of catalase (CAT), superoxide dismutase (SOD) and glutathione S-transferase (GST), and the concentration of malondialdehyde (MDA) were estimated in blood taken on days 21 and 40. The oocyst numbers were calculated per gram, and chicken body weight and feed conversion ratio (FCR) measured. The activities of CAT, GST and the level of MDA were significantly lower (P<0.05), whilst the activity of SOD was higher in infected chickens treated with anticoccidials (P<0.05) in comparison to those untreated. The most prominent change in the parameters of oxidative stress was recorded in the Ro+Herb group. In chickens treated with anticoccidials body weight was significantly higher (P<0.05), and the FCR and the oocyst counts significantly lower (P<0.05) than in untreated chickens. Oocyst counts were lower in the Ro and Ro+Herb groups than in the Herb group. Our study demonstrated that both anticoccidial substances exerted antioxidant and anticoccidial effect

SADRŽAJ PESTICIDA I TOKSIČNIH ELEMENATA U JETRI LABUDOVA (CYGNUS OLOR)

Labudovi su divlje ptice vodenih staništa i pripadaju familiji Anatidae, roduAnseriformes. S obzirom na stanište, način života i ishranu, labudovi predstavljajuznačajnu bioindikatorsku vrstu za monitoring zagađivača u prirodi. Hrane seuglavnom vodenim biljkama i zelenim algama koje predstavljaju direktan pokazateljzagađenja životne sredine i vodenih staništa. Poznato je da se pasticidi kao i toksičnielementi akumuliraju i perzistiraju u vodenim ekosistemima i vodenim organizmima(alge, ribe, beskičmenjaci itd.) i preko lanca ishrane dospevaju i u kopnene biljke,životinje i čoveka. Cilj ovog rada je bio utvrđivanje stepena ugroženosti labudovakao zaštićene vrste, usled štetnog dejstva pesticida i toksičnih elemenata. Pripremauzoraka za određivanje pesticida je urađena u skladu sa multirezidualnom metodomQuEChERS. Ova metoda pripreme se zasniva na ekstrakciji sa acetonitrilom u prisustvusoli. Za kvantifikaciju rezidua pesticida korišćen je gasni hromatograf sa masenimdetektorom, Agilent Technology GCMSD 7890B/5977A sa elektronskom jonizacijomi kvadropolnim detektorom. Uzorci za merenje toksičnih elemenata pripremljeni sumetodom mikrotalasne digestije u sistemu Ethos, Microwave Labstation, Milestone,a određivanje je izvršeno tehnikom Inductively Coupled Plasma Mass Spectrometryna instrumentu Agilent ICP-MS 7700 preko izotopa: 75As, 111Cd, 201Hg, 208Pb, 56Fe, 63Cu i66Zn. Rezultati ispitivanja pesticida pokazuju da je u svim analiziranim uzorcima njihovsadržaj veoma nizak i nalazi se ispod granice kvantifikacije upotrebljene metode. Naosnovu izmerenih vrednosti toksičnih elemenata, može se zaključiti, da se njihovsadržaj kretao u intervalu, i to: za arsen 0.004 – 0.027 mg/kg; za kadmijum 0.023 –0.473 mg/kg; za živu 0.007 – 0.188 mg/kg; za olovo 0.108 – 0.248 mg/kg; za bakar 81– 810 mg/kg; za gvožđe 362 – 3288 mg/kg i za cink 21 – 127 mg/kg. Dobijeni rezultatiispitivanja ukazuju da je lokalitet prirodnog rezervata „Koviljsko-petrovaradinski rit“nezagađen pesticidima ali da treba u daljim ispitivanjima, na većem broju uzoraka,utvrditi uzroke značajno povećanog sadržaja nekih toksičnih elemenata (Cd, Hg, Cu,Fe) u ispitivanim uzorcima jetre labudova