Analysis of the impact of injuries caused by the influence of mechanical and abiotic factors on the occurrence of harmful fungal organisms

U radu je istraživan aspekt pojave patogenih mikroorganizama na bukovom drvetu u odnosu na prisustvo ozleda na stablima, u cilju zaštite i očuvanja ove vrste u Srbiji. Istraživanja su vršena u istočnoj Srbiji, u brdskoj šumi bukve Fagetum moesiacae submontanum, generativnog porekla. Ispitivanjem je obuhvaćeno dva lokaliteta na 51 oglednoj parceli, sa ukupno 829 stabala i konstatovano je prisustvo 21 vrsta gljiva. Na prvom lokalitetu konstatovano je da pojava gljiva prvenstveno zavisi od prisustva mehaničkih oštećenja na stablima (čak 73.46%), a gotovo uopšte nije u vezi sa prisustvom abiotičkih oštećenja (svega 3.21%). Na drugom lokalitetu postoji jaka korelaciona veza između pojave gljiva i prisustva mehaničkih oštećenja - 51.88%, kao i između gljiva i abiotičkih oštećenja - 47.96%. Konstatovano je da za zdravstveno stanje visokih bukovih sastojina izuzetan značaj ima pažljivo i pravilno manipulisanje prilikom seče, a svaka ozleda na bukovim dubećim stablima počinjena pri seči je otvoren put za zarazu patogenim mikroorganizmima.The research described in this paper is focused on the occurrence of pathogenic microorganisms on beech trees relative to the presence of tree injuries, with the aim to ensure protection and preservation of this species in Serbia. The research was conducted in Eastern Serbia, in a hillside beech forest Fagetum moesiacae submontanum of generative origin. The testing was carried out on two sites over 51 testing plots, with a total of 829 trees and 21 species of identified fungi. On the first site it was found that the appearance of fungi primarily depends on the presence of mechanical damage on trees (as much as 73.46%), while the presence of abiotic damage has almost no bearing (only 3.21%). On the second site there was a strong correlation link between the occurrence of fungi and presence of mechanical damage - 51.88%, as well as between the fungi and abiotic damage - 47.96%. The health condition of high beech stands was found to be heavily dependent on careful and proper manipulation during harvesting, while each injury inflicted on a beech live tree during logging opens the door to infection with pathogenic microorganisms

A Proposed Method for Determining Propulsion Coefficient Based on Testing Motor Freighters on Danube Waterway Network

The paper presents a proposal of mathematical models for the determination of propulsion coefficient, eta pp, intended for the analysis of motor freighters applied on the river watercourses. As the main paper contribution three different model types are developed, depending on the variable which contributes to eta pp value. These variables are: 1. the freighter sailing velocity, (nu); 2. the installed capacity of the main drive motor of outboard unit, (N-inst); 3. the combination of these two variables, (N-inst, nu). The models are verified on the examples of several motor freighters which are applied at Danube river. The special attention is paid to the determination of the optimum approximation function in each case. In all three cases it is a quadratic function. The correlation coefficient for the comparison in all analyzed examples is higher than 0.87, being even higher than 0.99 for the first model

A Proposed Method for Determining Propulsion Coefficient Based on Testing Motor Freighters on Danube Waterway Network

The paper presents a proposal of mathematical models for the determination of propulsion coefficient, eta pp, intended for the analysis of motor freighters applied on the river watercourses. As the main paper contribution three different model types are developed, depending on the variable which contributes to eta pp value. These variables are: 1. the freighter sailing velocity, (nu); 2. the installed capacity of the main drive motor of outboard unit, (N-inst); 3. the combination of these two variables, (N-inst, nu). The models are verified on the examples of several motor freighters which are applied at Danube river. The special attention is paid to the determination of the optimum approximation function in each case. In all three cases it is a quadratic function. The correlation coefficient for the comparison in all analyzed examples is higher than 0.87, being even higher than 0.99 for the first model

A review of multi-objective optimization of container flow using sea and land legs together

Intermodalni transport je sistem koji podrazumeva prevoz 'od vrata do vrata' pod odgovornošću jednog prevoznika tj. operatora intermodalnog transporta, uz učešće najmanje dva vida transporta (u prevozu tereta bez promene tovarno manipulativne jedinice). Kontejnerski transport je glavna komponenta intermodalnog transporta i međunarodne trgovine. Kontejnerski transportni tok bi trebalo da bude optimalan kako bi se osiguralo pravilno korišćenje resursa i kako bi se omogućila profitabilnost korisnika. Razni višekriterijumski evolucioni algoritmi su razvijeni da efikasno reše probleme optimizacije u kontejnerskom transportu. Ovaj rad predstavlja kratak pregled problema optimizacije u intermodalnom transportu posmatrajući jedan transportni lanac u kome se transport kontejnera obavlja morem i kopnom uzimajući u obzir tri najčešće razmatrana optimizaciona kriterijuma (transportni troškovi, tranzitno vreme i emisija ugljen-dioksida).Intermodal freight transportation refers to a multi-modal chain of container-transportation services which usually links the initial shipper to the final consignee of the container (door-to-door service) and takes place over long distances. Container transportation is a major component of intermodal transportation and international commerce. Container flow should be optimal to ensure proper resource utilization and profitability to players. Various multi-objective evolutionary algorithms have been developed to efficiently solve optimization problems in container flows. This paper presents a short review of optimization problems in intermodal transport using sea and land legs together regarding three mostly observed objectives (transport cost, transit time and CO2 emissions)

Značaj inflamatornih markera i poremećaja sistema hemostaze kod bolesnika sa akutnim pankreatitisom

A possibility to develop sever systemic complications of acute pancreatitis(AP) demands timely assessment of the severity of the disease in order to make an optimal therapeutic approach and a correct prognosis of the disease. The aim of the study was to establish the role of certain individual inflammatory biomarkers and coagulation parameters in the prediction of AP severity, and also to propose a mathematical formula which allows there combined use for the same purpose. Methods. The prospective study included 92 patients with AP. The patients were divided into groups: mild, moderate and severe AP. Results. Based on the results of Mann-Whitney,s test, it can be concluded that a statistically significant difference between groups A(mild) and B(moderate and severe) for CRP (p<0.05). Using the Wald’s stepwise forward method, a prediction model with CRP, PCT, D-dimer 1, D-dimer 3, fibrinogen 1 and fibrinogen 3 parameters as predictors of the severity of AP has been obtained. The percentage of successful prediction of moderate or severe AP based on this model is 76.9%. Conclusion. The combined analysis of biohumoral markers and coagulation parameters presented in the form a mathematical formula can enable a more accurate, rapid, rational and clinically available prediction of the severity of AP

A review of multi-objective optimization of container flow using sea and land legs together

Intermodalni transport je sistem koji podrazumeva prevoz 'od vrata do vrata' pod odgovornošću jednog prevoznika tj. operatora intermodalnog transporta, uz učešće najmanje dva vida transporta (u prevozu tereta bez promene tovarno manipulativne jedinice). Kontejnerski transport je glavna komponenta intermodalnog transporta i međunarodne trgovine. Kontejnerski transportni tok bi trebalo da bude optimalan kako bi se osiguralo pravilno korišćenje resursa i kako bi se omogućila profitabilnost korisnika. Razni višekriterijumski evolucioni algoritmi su razvijeni da efikasno reše probleme optimizacije u kontejnerskom transportu. Ovaj rad predstavlja kratak pregled problema optimizacije u intermodalnom transportu posmatrajući jedan transportni lanac u kome se transport kontejnera obavlja morem i kopnom uzimajući u obzir tri najčešće razmatrana optimizaciona kriterijuma (transportni troškovi, tranzitno vreme i emisija ugljen-dioksida).Intermodal freight transportation refers to a multi-modal chain of container-transportation services which usually links the initial shipper to the final consignee of the container (door-to-door service) and takes place over long distances. Container transportation is a major component of intermodal transportation and international commerce. Container flow should be optimal to ensure proper resource utilization and profitability to players. Various multi-objective evolutionary algorithms have been developed to efficiently solve optimization problems in container flows. This paper presents a short review of optimization problems in intermodal transport using sea and land legs together regarding three mostly observed objectives (transport cost, transit time and CO2 emissions)

Supplementary data for article: Senerovic, L.; Zivkovic, M. D.; Veselinovic, A.; Pavic, A.; Djuran, M. I.; Rajkovic, S.; Nikodinovic-Runic, J. Synthesis and Evaluation of Series of Diazine-Bridged Dinuclear Platinum(II) Complexes through in Vitro Toxicity and Molecular Modeling: Correlation between Structure and Activity of Pt(II) Complexes. Journal of Medicinal Chemistry 2015, 58 (3), 1442–1451. https://doi.org/10.1021/jm5017686

Supporting information for: [https://doi.org/10.1021/jm5017686]Related to published version: [http://cherry.chem.bg.ac.rs/handle/123456789/1659

Yield of grain and some yield components during different way of seed-protection at different variety of winter wheat

Researching was done in field condition with three variety of winter wheat and seven ways of seed protection. Researching shown that the way of seed protection was factor that have significance influence on researched characteristics. Our researching shown that among the same way of protection hadn't been significance difference among researched variety of wheat in number plants and spike per m2, coefficient of productive bushing and grain yield . Number plants per m2 arrised from 484 at variety PKB-Christina to 520 at variety Vizija. According to the way of protection per m2 arrised from 487 at treatment Tilletia tritici+ Sumi 8 to 517 at electronic way of protection. The number of spike per m2 arrised from 721 at variety PKB-Christina to 732 at variety Pobeda. According to the researched ways of protection the number of spike is established from 711 at control to the 746 at treatment with Tlletia tritici. Coefficient of productive bushes is established was 1,43 at variety Vizija to 1,49 at variety Pobeda. According to the way of seed protection coefficient of productive bushes as established at control 1,44 to treatment Tilletia tritici + Sumi 8. 1,50. Yield of grain is established at variety Vizija 7,03t/ha and variety Pobeda 7,69t/ha. According to the way of grain yield protection was 7,19 t/ha and at control was 7,56 t/ha with Dividendom 030 protection.Istraživanja su izvedena u poljskim uslovima, sa tri sorte ozime pšenice i sedam načina zaštite semena. Utvrđeno je da je način zaštite semena faktor koji znatno utiče na ispitivana svojstva. U okviru istog načina zaštite nema razlika u broju biljaka i klasnova po m2, u koeficijentu produktivnog bokorenja i prinosu zrna. Broj biljaka po m2 kretao se od 484 kod sorte PKB-Christna do 520 kod sorte Vizija, broj klasova po m2 od 721 kod sorte PKB-Chistina do 732 kod sorte Pobeda, koeficijent produktivnog bokorenja od 1.43 kod sorte Vizija do 1.49 kod sorte Pobeda, a prinos zrna od 7.03 t/ha kod sorte Vizija do 7.69 t/ha kod sorte Pobeda. U odnosu na način zaštite broj biljaka po m2 kretao se od 487 kod tretmana Tilletia tritici + divikonazol, do 517 kod elektronskog načina zaštite, broj klasova od 711 kod kontrole do 746 kod tretmana sa Tilletia tritici, koeficijenat produktivnog bokorenja od 1.44 kod kontrole do 1.50 kod tretmana Tilletia tritici + divikonazola, a prinos zrna od 7.19 t/ha kod kontrole do 7.56 t/ha kod zaštite sa difenokonazolom

Azotne jonske grupe i jedinjenja prisutna u vodi za piće na teritoriji Severno-bačkog okruga

In the territory of North-Bačka administrative district examination of drinking water regarding nitrogenous ionic groups and compounds during the period from 2013 to 2015 show was a slight deviation of comparing to the allowed ones. Statistical significance for the presence of ammonia in water samples was proven in samples taken from water supply of Subotica city. The lowest percentage of faulty samples was found in a year 2014 and the largest in a year 2015. Rural water supply of the Subotica city is characterized by minor differences observed in a time, with no statistical significance. However, comparing with the city water supply, the situation is much worse (in more than 40% of samples). Such a high percentage of faulty samples can be explained with existence of a huge number of non-organized water supplies in villages, as well as because of the using water from an insufficiently controlled private wells. Regarding the faulty samples, the water supply of the Bačka Topola municipality has the level of ammonia above the permitted, with deviations and statistically significant difference. Unlike the water supply of the Bačka Topola municipality, which has the lowest number of faulty samples recorded in 2013, in the rural water supply the number of faulty samples was the biggest in 2013 and the lowest in 2014. The territory of Mali Iđos municipality is characterized with a very small number of a faulty samples of drinking water regarding the presence of ammonia. For all three analyzed years, there were no major variations regarding faulty samples and no statistically significant differences. Observed by municipalities, there is a statistically significant difference in the number of faulty samples for all three years. Climate situation and the amount of rainfall during the 2014 was unusual in the Subotica city, as also at the larger territory of the Republic of Serbia. Long-term average in rainfall was exceeded, resulting with the lowest concentration of ammonia in the city water supply. Also, the lowest percentage of exceeding the limit value of ammonia in drinking water was recorded in 2014, in the rural water supply of the Bačka Topola municipality.Rezultati ispitivanja vode za piće u pogledu prisustva azotnih jonskih grupa i jedinjenja na teritoriji Severno-bačkog upravnog okruga u periodu 2013-2015. godine u malom procentu beleže odstupanja od dozvoljenih vrednosti. Na teritoriji Grada Subotice dokazana je statistička značajnost u pogledu prisustva amonijaka u uzorcima vode. Najmanji procenat neispravnosti karakteriše 2014, a najveći 2015. godina. Za seoski vodovod na teritoriji Grada Subotice karakteristične su manje razlike posmatrano po godinama, koje nemaju statističku značajnost, ali je situacija znatno lošija u odnosu na gradski vodovod (više od 40% uzoraka). Ovako visok procenat neispravnosti može se objasniti postojanjem većeg broja sela bez mogućnosti organizovanog vodosnabdevanja stanovništva, te korišćenjem vode iz nedovoljno kontrolisanih sopstvenih bunara. Gradski vodovod Opštine Bačka Topola u pogledu neispravnosti uzoraka u smislu prisustva amonijaka je iznad dozvoljenih vrednosti, i karakteriše ga odstupanja i statistički značajna razlika. Za razliku od gradskog vodovoda bačko-topolske opštine gde je najmanje neispravnih uzoraka zabeleženo 2013. godine, za seoski vodovod najveći broj neispravnih uzoraka upravo je u 2013. godini, a najmanji u 2014. godini. Teritoriju Opštine Mali Iđoš karakteriše veoma mali broj neispravnih uzoraka pijaće vode po pitanju prisustva amonijaka. Za sve tri posmatrane godine, nije bilo većih variranja u pogledu neispravnosti, te ni statistički značajne razlike po godinama. Posmatrano po opštinama, uočena je statistički značajna razlika u broju neispravnih uzoraka za sve tri godine. Klimatska situacija i količina padavina u toku 2014. godine je, kao i na većoj teritoriji Republike Srbije, bila neuobičajena i na teritoriji Grada Subotica. Premašen je dugogodišnji prosek u količini padavina, što je rezultiralo najnižom koncentracijom amonijaka u gradskom vodovod u. Takođe, najmanji procenat prekoračenja graničnih vrednosti amonijaka u vodi za piće u Opštini Bačka Topola, u seoskom vodovodu, zabeležen je 2014. godine

Determination of residues of sulfonylurea herbicides in soil by using microwave-assisted extraction and high performance liquid chromatographic method

A modified method for the analysis of nicosulfuron, rimsulfuron and prosulfuron was developed and validated by using microwave-assisted extraction (MAE) and ultra-performance liquid chromatography with diode array detection in the ultraviolet region (HPLC-UV-DAD). The most important experimental parameters of extraction procedure and HPLC-UV-DAD technique were optimised in respect to those sulfonylurea herbicides. High recoveries of the microwave-assisted extraction were obtained by using a dichloromethane-acetonitrile mixture (2:1 volume ratio) acidified with acetic acid (0.8 vol.%) with the addition of urea. The mean recoveries at three spiking levels ranged from 97.47 to 98.76% for nicosulfuron, 97.88 to 99.17% for rimsulfuron and from 97.91 to 99.83% for prosulfuron. The limits of detection of nicosulfuron, rimsulfuron and prosulfuron were 0.95, 0.91 and 0.89 mu g kg(-1), respectively. The accuracy of the developed method was confirmed by HPLC coupled with tandem mass spectrometry parallel analyses. The developed method was used to investigate the dissipation dynamics of sulfonylurea herbicides in the real field trials in Vojvodina Province, Serbia. The obtained half-lives were 0.05, 0.23 and 0.15 days for recommended dose application of nicosulfuron, rimsulfuron and prosulfuron, respectively. Low residues and short half-life in soil suggested that the risk to sensitive rotational crops after application of those sulfonylurea herbicides is low when they are used in the appropriate dosages