Mikrobiološka transformacija sintetičkog laktona benzofuranskog tipa

The aim of this work was the investigation of the biotransformation ability of a synthetic benzofurane type g-lactone. This workwas basedon the microbiological reactions of Aspergillus niger, Saccharomyces cerevisiae, Bacillus mycoides, Agrobacterium tumefa- ciens,Pseudomonas glicinea and Pseudomonas fluorescens to obtain newactive derivatives. Four biotransformation products were determined. The lactone was used for two purposes, as an additive for the nutrient substrate and as a source of organic carbon.Cilj ovog rada je ispitivanje mogućnosti biotransformacije benzofuranskog derivata, sa a-metilen-g-butirolaktonskom strukturnom jedinicom, sa različitim sojevima mikroorganizama: Aspergillus niger, Saccharomyces cerrevisiae, Bacillus mycoides, Agrobacterium tumefaciens, Pseudomonas glicinea i Pseudomonas fluorescens u cilju dobivanja novih jedinjenja sa specifičnijom antimikrobnom aktivnošću. Takodje izolovani i identifikovani proizvodi su ukazali i potvrdili osnovne biodegradacione puteve ispitivanog laktona

Integrisanje odnosa s javnošću u sistem marketing komuniciranja

Public relations can be seen as a management function, whose task is to establish and foster relationships of mutual understanding and goodwill between the organization and various groups of publics who can impact on its success or failure, but also as one of the most important marketing communications tools. Since public relations could potentially have great power and influence on the formation of public opinion, on the creation of the image and reputation of the organization, as well as on the establishment and maintenance of high quality and long-term relationships with various business and market structures, for the needs of the doctoral dissertation a research was carried out in the higher education institutions in Serbia, in order to determine the degree of development and forms of application of public relations in the context of the overall promotional activities of these institutions. The main objectives of this paper are related to: a comprehensive theoretical consideration of marketing communications tools; a theoretical consideration of public relations as a management function, and then determining the place, role and importance of public relations in the marketing communications system; a review of the application of the most important areas of public relations, as well as the importance and role of the public relations as the marketing communications instrument in the higher education institutions in Serbia. Based on the defined objectives and goals, hypotheses were formulated. In order to test the hypotheses, the domestic and foreign literature and Internet sources were used, as well as the results obtained through primary and secondary empirical research. For the purposes of primary research, the structured questionnaire was designed. Elemental analysis of statistical data obtained through primary research, was conducted by calculating frequencies, percentages and cumulative percentages for all dependent variables. The paper is structured in three parts: the first part is entitled "Marketing Communications Development"; the second part, titled "Place and Role of Public Relations in the Marketing Communications System", deals with the most important characteristics and areas of public relations, and then on the mutual relations between marketing and public relations. The third part is called "Empirical Research". First, the position of the public relations profession in Serbia is presented, based on the researches conducted by the Serbian Association of Public Relations (DSOJ) in 2008 and 2012; afterwards, the results of the research conducted in March 2015 in the higher education institutions in Serbia for the purposes of this dissertation are presented. In the final part of the dissertation the hypotheses were tested and the final assessment of the results obtained are presented

Socijalno-ekološka bezbednost, održivi razvoj i kvalitet života

Human society in the 21st century has exposed many problems, such as poverty, exploitation and pollution of the environment, economic and political conflicts, religious intolerance, which leads to a reduction of each type of sаfety of all people on the planet Earth. Therefore, the modern world is faced with the need for a global, shared responsibility for development in accordance with the needs of people, nature and the understanding that the planet Earth must be preserved for present and for future generations of people in an acceptable manner. Socio-ecological safety and quality of life of every individual is a key element in achieving a new direction in social development, which is reflected in the acceptance of the idea of sustainability in the field of environmental protection, economic and social spheres. Therefore, it is necessary to improve the socio-ecological safety of each individual, in order to achieve a higher quality of life and thus enable the implementation of sustainable development in all segments of society. The theoretical part of the Doctoral Dissertaion, suggesting a connection between the socio-ecological safety, sustainable development and quality of life. The empirical part of the Doctoral Dissertaion is to identify the attitudes of respondents border municipalities Babušnica and Majdanpek, about their socio-ecological safety, quality of life and the possibilities of achieving sustainable development in their municipalities of residence

Изоловање и антимикробна активност антрахинона неких врста лишајева рода Xanthoria

The isolation of six anthraquinones erythroglaucin, physcion, xanthorin, emodin, fallacinal, teloschistin, from three species of the lichen genus Xanthoria (X.fallax, X.elegans and X.policarpa) is reported. Physcion is the dominant anthraquinone in all species.The anthraquinones showed broad-spectrum and fungal and selective activity against some phytopathogenic bacterial species.Из три врсте лишајева рода Xanthoriа (X.fallax, X.elegans and X.policarpa) изоловани су следећи антрахинони : еритроглауцин, фисцион, ксанторин, емодин, фалацинал и фалацинол.Тестирани антрахинони показују широк спектар антифунгалне активности и селективну активност према неким врстама фитопатогених бактерија

Model savremenog sistema finansiranja na primeru islamskog bankarstva

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Specifična absobcijska energija staklo-poliester kompozitne cijevi pod statičkim tlačnim opterećenjem

The experimental determination of energy of glass-polyester composite tubes static fracture is done. The tubes are of defined structure and known processes of fabrication. The aim was to determine the possibility of their usage as damping elements during impact. Two types of tubular samples with different diameters were tested until fracture under static (low speed) compressive loading. The applied forces and sample lengths were measured until complete destruction of samples. From the diagrams received directly from testing devices, certain energy values explained in the paper were determined.U radu je prikazano eksperimentalno određivanje statičke energije loma staklo-poliester kompozitnih cijevi poznate struktura materijala i postupka izrade. Cilj ispitivanja je bio odrediti mogućnost primjene ugradnje takvih cijevi u elemente za prigušivače udara. Pod djelovanjem spornog statičkog tlačnog opterećenja ispitivana su dva tipa cijevi različitih presjeka. Pri tom su mjerene primenjene sile i duljine uzoraka sve do potpunog loma cijevi. Na osnovu dobivenih dijagrama su izračunate vrijednosti specifičnih energija apsorpcije

The effects of acute hyperhomocysteinemia induced by DL-homocysteine or DL-homocysteine thiolactone on serum biochemical parameters, plasma antioxidant enzyme and cardiac acetylcholinesterase activities in the rat

The aim of this study was to assess the effects of DL-homocysteine (DL-Hcy) and DL-homocysteine thiolactone (DL-Hcy TLHC) on selected serum biochemical parameters, markers of oxidative stress and the activities of antioxidant enzymes (catalase (CAT), glutathione peroxidase (GPx), superoxide dismutase (SOD)) in the plasma, as well as on acetylcholinesterase (AChE) activity in the cardiac tissue homogenate in the rat. Male Wistar rats were divided into three groups as follows: control group (1 mL 0.9% NaCl, intraperitoneal (i.p.) injection), DL-Hcy group (8 mmol/kg body mass (b.m.), i.p.) or DL-Hcy TLHC group (8 mmol/kg b.m., i.p.). One hour after administration, the rats were euthanized, whole blood was collected for biochemical analysis, and the heart was excised. Following the i.p. administration of DL-Hcy and DL-Hcy TLHC, the activities of antioxidant enzymes were mostly significantly increased, while plasma malondialdehyde (MDA) was decreased. Administration of DL-Hcy and DL-Hcy TLHC significantly inhibited AChE activity in rat cardiac tissue. Our findings suggest that DL-Hcy and DL-Hcy TLHC exerted prooxidant effects; however, the decrease in MDA points to an inverse response to the increase in antioxidant enzyme activities. While both substances inhibited AChE activity in rat cardiac tissue, DL-Hcy TLHC induced stronger effects than DL-Hcy

Measurement of the production cross section of prompt j/psi mesons in association with a W (+/-) boson in pp collisions root s=7 TeV with the ATLAS detector

The process pp - GT W (+/-) J/psi provides a powerful probe of the production mechanism of charmonium in hadronic collisions, and is also sensitive to multiple parton interactions in the colliding protons. Using the 2011 ATLAS dataset of 4.5 fb(-1) of root s= 7 TeV pp collisions at the LHC, the first observation is made of the production of W (+/-) + prompt J/psi events in hadronic collisions, using W (+/-) - GT mu nu(mu) and J/psi - GT mu(+)mu(-) center dot A yield of W (+/-) + prompt J/psi events is observed, with a statistical significance of 5.1 sigma. The production rate as a ratio to the inclusive W (+/-) boson production rate is measured, and the double parton scattering contribution to the cross section is estimated

Search for dark matter in events with heavy quarks and missing transverse momentum in pp collisions with the ATLAS detector

This article reports on a search for dark matter pair production in association with bottom or top quarks in 20.3 fb(-1) of pp collisions collected at root s = 8 TeV by the ATLAS detector at the LHC. Events with large missing transverse momentum are selected when produced in association with high-momentum jets of which one or more are identified as jets containing b-quarks. Final states with top quarks are selected by requiring a high jet multiplicity and in some cases a single lepton. The data are found to be consistent with the Standard Model expectations and limits are set on the mass scale of effective field theories that describe scalar and tensor interactions between dark matter and Standard Model particles. Limits on the dark-matter-nucleon cross-section for spin-independent and spin-dependent interactions are also provided. These limits are particularly strong for low-mass dark matter. Using a simplified model, constraints are set on the mass of dark matter and of a coloured mediator suitable to explain a possible signal of annihilating dark matter

Search for new phenomena in events with a photon and missing transverse momentum in pp collisions at root s = 8 TeV with the ATLAS detector

Results of a search for new phenomena in events with an energetic photon and large missing transverse momentum with the ATLAS experiment at the LHC are reported. Data were collected in proton-proton collisions at a center-of-mass energy of 8 TeVand correspond to an integrated luminosity of 20.3 fb(-1). The observed data are well described by the expected Standard Model backgrounds. The expected (observed) upper limit on the fiducial cross section for the production of events with a photon and large missing transverse momentum is 6.1 (5.3) fb at 95% confidence level. Exclusion limits are presented on models of new phenomena with large extra spatial dimensions, supersymmetric quarks, and direct pair production of dark-matter candidates