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Search Results: 1 - 10 of 4745 matches for " Tomi?evi? Jelena "
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Public attitude in the city of Belgrade towards invasive alien plant species
TomieviJelena,Grbi? Mihailo,Sko?aji? Dragana,Radovanovi? Dragana
Glasnik ?umarskog Fakulteta , 2012, DOI: 10.2298/gsf1205189t
Abstract: Biological invasions are seen as a major threat to biodiversity at a global level, while the number of new invasions is increasing at an alarming rate. Raising the awareness of the public, academic world and policy makers about the dangers caused by invasive species, is essential for the creation of the support needed to implement and coordinate the policies necessary to address this problem. The aim of this study is to determine the level of local public awareness of the existence of these plant species, examine the public attitude towards alien invasive plant species and willingness to get involved in the prevention of their spreading. The survey was conducted in four nurseries on the territory of the City of Belgrade and the investigation dealt only with alien invasive woody plant species. Thirty customers were questioned in each of the four nurseries. The results show that local public is uninformed on the issue of invasive plant species. It is necessary to constantly and intensively raise their awareness of this issue, as well as the awareness of harmful consequences that may occur due to the uncontrolled spreading of alien invasive species. This refers not only to the population that visits the nurseries and buys the plants there and to those employed in plant production and selling, but also to the whole local public and decision makers.
An aggressive chondroblastoma of the knee treated with resection arthrodesis and limb lengthening using the Ilizarov technique
Slavko Tomi, Aleksandar Le?i?, Marko Bumba?irevi?, Jelena Sopta, Zoran Rako?evi, Henry D Atkinson
Journal of Orthopaedic Surgery and Research , 2010, DOI: 10.1186/1749-799x-5-47
Abstract: First described by Ewing in 1928, chondroblastomas were originally named "epiphyseal chondroblastomatous giant cell tumors of the proximal humerus" by Codman in 1931, and are often still termed Codman tumors [1-4]. They occur mostly in the second decade of life, and are more common in males [5-8]. Usually arising from the epiphyseal plate [9-11] and measuring between 1 and 7 cm [12], chondroblastomas are most frequently found in the proximal humerus, distal femur, proximal tibia, and the iliac bones [2-4,7,9,13-16]; they can also appear in the talus, ribs and digits [17-20].Though normally benign, and accounting for 1-2% of all benign bone tumors [2-4], histologically aggressive forms of the disease can also occur [5,13,21,22], with associated high recurrence rates (5-38%) and occasional lung metastases [14,16,23].We report the case of a biologically aggressive chondroblastoma of the knee treated with a 13 cm en-bloc excision, knee arthrodesis, and bone transport using an Ilizarov ring fixator.In July 1995 a 15 year-old boy presented with a 6 month history of pain and swelling in the left knee. On examination he walked with an antalgic gait, there was a moderate left knee effusion, and the knee circumference was 5 cm greater than the right side. Range of movement was severely limited to 0 to 40 degrees of flexion. There was no local lymphadenopathy and he was constitutionally well. Plain radiographs (Figure 1) and CT scans (Figure 2) demonstrated an osteolytic process in the proximal left tibia, and a second lesion in the medial femoral condyle. Laboratory tests were within normal limits and a chest radiograph was normal. Angiography did not show any abnormal neovascularisation, and Technicum 99 bone scintigraphy showed a relative accumulation of radionucleotide in the proximal tibia.The patient underwent open biopsy of the tibial lesion and microscopic histopathological analysis (HE stained and immunohistochemistry) confirmed an aggressive chondroblastoma (Figures
Elaeagnus umbellata thunb. as the potential invasive species in Belgrade region
Sko?aji? Dragana,Grbi? Mihailo,TomieviJelena,?unisijevi?-Bojovi? Danijela
Glasnik ?umarskog Fakulteta , 2008, DOI: 10.2298/gsf0898177s
Abstract: It is known that invasive plant species, as the species which most often spread and suppress the native species, form stable populations and become dominant firstly by occupying the sites of urban areas, and later on by continuing their invasion to the neighbouring suburban and rural areas. This paper presents the research of biological and ecological characters of Elaeagnus umbellata Thunb., one of the potential invasive species. The phenological observation of this species yield abundance and periodicity and the biometric analysis of fruits and seeds point to a high quality of its generative reproductive material. The analysis of seed dormancy of this species in our conditions, as the significant factor of the control of potential invasiveness, shows its double dormancy and its elimination requires combined chemical treatments and several months of stratification. The study of mechanisms of autumn olive dormancy breaking (overcoming the reproductive barrier) and seed dispersion (overcoming the dispersion barrier) is very significant for the forecast of further dispersion of this species.
Size-Dependent Effects of Gold Nanoparticles Uptake on Maturation and Antitumor Functions of Human Dendritic Cells In Vitro
Sergej Tomi, Jelena ?oki?, Sa?a Vasiliji?, Nina Ogrinc, Rebeka Rudolf, Primo? Pelicon, Dragana Vu?evi, Petar Milosavljevi?, Sr?a Jankovi?, Ivan An?el, Jelena Rajkovi?, Marjan Slak Rupnik, Bernd Friedrich, Miodrag ?oli?
PLOS ONE , 2014, DOI: 10.1371/journal.pone.0096584
Abstract: Gold nanoparticles (GNPs) are claimed as outstanding biomedical tools for cancer diagnostics and photo-thermal therapy, but without enough evidence on their potentially adverse immunological effects. Using a model of human dendritic cells (DCs), we showed that 10 nm- and 50 nm-sized GNPs (GNP10 and GNP50, respectively) were internalized predominantly via dynamin-dependent mechanisms, and they both impaired LPS-induced maturation and allostimulatory capacity of DCs, although the effect of GNP10 was more prominent. However, GNP10 inhibited LPS-induced production of IL-12p70 by DCs, and potentiated their Th2 polarization capacity, while GNP50 promoted Th17 polarization. Such effects of GNP10 correlated with a stronger inhibition of LPS-induced changes in Ca2+ oscillations, their higher number per DC, and more frequent extra-endosomal localization, as judged by live-cell imaging, proton, and electron microscopy, respectively. Even when released from heat-killed necrotic HEp-2 cells, GNP10 inhibited the necrotic tumor cell-induced maturation and functions of DCs, potentiated their Th2/Th17 polarization capacity, and thus, impaired the DCs' capacity to induce T cell-mediated anti-tumor cytotoxicity in vitro. Therefore, GNP10 could potentially induce more adverse DC-mediated immunological effects, compared to GNP50.
Food allergy in children: Part I: Pathogenesis and diagnostic approach
TomiJelena,Jovanovi? Mirjana,Tomi? Du?an
Medicinski Pregled , 2003, DOI: 10.2298/mpns0302054t
Abstract: Introduction Food allergy is a form of adverse food reaction to different nutritive agents caused by immunological mechanisms. This condition is frequent in individuals with genetic predisposition. Frequency of food allergies in childhood varies in general population from 0.3 - 7.5 %. Characteristics of neonatal and infant gastrointestinal tracts are described as well as the role of gastrointestinal tract’s immunological immaturity in development of food sensitivity. Pathogenesis Features of physical and immunological barriers of gastrointestinal tract are described as well as their role in physiological conditions, in digestion and absorption of foreign proteins and prevention of foreign agents penetration and potentially dangerous proteins into the systemic circulation. Gastrointestinal-associated lymphoid tissue (GALT) is the basic part of immunological barrier. Its first role is to induce oral tolerance. In normal conditions cytokines induce T cells towards Th2 response and also promote synthesis of IgA antibodies Pathogenic mechanisms in evolution of reaginic hypersensibility in cases of chronic inflammation are also described. Pathological status of gamma/delta T cells plays an important role in this process, resulting in loss of oral tolerance and development of sensibilitivity. Conclusion Diagnostic procedures are multiple and complex. They consist of detailed history taking clinical findings, in vitro and in vivo tests, endoscopy, elimination diets and oral provocation tests. Food allergy in childhood is often transient and resolves spontaneously.
When the Sound-Symbolism Effect Disappears: The Differential Role of Order and Timing in Presenting Visual and Auditory Stimuli  [PDF]
Jelena Su?evi, Dragan Jankovi?, Vanja Kovi?
Psychology (PSYCH) , 2013, DOI: 10.4236/psych.2013.47A002
Abstract:

Kohler’s observation that most people match pseudoword “maluma” to curvy objects and “takete” to spiky objects represented the well-known example of sound symbolism—the idea that link between sound and meaning of words was not entirely arbitrary. This study was aimed to examine the existence of sound symbolism in natural language and to consider the potential role of some aspects of experimental design and stimuli features which had not been considered in experimental studies so far. Three experiments were done in order to explore the influence of visual information on language processing. Visual lexical decision task with the sharp-sounding and soft-sounding verbal stimuli presented within the spiky and curvy frames was used. Reaction time analysis in these three experiments highlighted additional aspects of visual and language processing which influence the potential interplay of these two processes. As results revealed, when visual information preceded presentation of verbal material for approximately 1000 ms or when visual and verbal material were presented simultaneously, the processing was being delayed and the interactions of these two processes occurred. The pattern of obtained results gave further support to the idea of sound symbolism as pre-semantic phenomenon and the hypothesis that the effect emerged from very early stages of language processing.

The role of knowledge management in building client relationships
Jelena ?or?evi? Boljanovi?,Jelena Stankovi?
Singidunum Journal of Applied Sciences , 2012,
Abstract: Knowlegde Management represents an interdisciplinary business model which focuses upon knowledge generation and its exchange within an organisation. Employees hold the key role in the processes of knowledge generation and its distribution, and their satisfaction forms the paradigm of successful knowledge management execution. Over last decade Customer Relation Management (CRM) proved to be a concept indispensable for achieving business success with companies operating in a global market. Its essence is based upon establishing and maintaining long term client relationships which aim to create value for both the client and the organisation. Like any other kind of relationship, organisation – client relationships experience alterations over the ’’client relationship life cycle“. Organisation itself causes ’’return on relationships“ to develop during this process. Directly aimed at their mutual goal – client satisfaction, CRM and knowledge management take effect in a synergetic form through an integrated concept of Customer i.e. Client Knowledge Management (CKM). Multidimensionality of contemporary business practice requires linking competencies of experts in different core business fields, especially in knowledge sharing, communication and developing partner relationship within business practice.
Soviet in content - people’s in form: The building of Farming Cooperative Centres and the Soviet-Yugoslav dispute, 1948-1950
?ivan?eviJelena
Spatium , 2011, DOI: 10.2298/spat1125039z
Abstract: It was not until 1948, when the Cominform conflict escalated, that the Communist Party of Yugoslavia began a thorough implementation of the Soviet model in Yugoslav agriculture - due to the Soviet criticism, the CPY made immediate legislative changes and started a class struggle in Yugoslav villages. Simultaneously, and just a few months before the Fifth Congress, Josip Broz Tito initiated a competition for building 4,000 Farming Cooperative Centres throughout Yugoslavia - they were built in accordance with the social-realist “national in form - socialist in content” slogan. Once the building started, in his Congress speech, Radovan Zogovi , a leader of the Serbian Agitprop department, offered the first official proclamation of Socialist Realism in the post-war period by a political authority. This article analyses the process of planning, designing and building of the Farming Cooperative Centres; discusses their political, ideological and formal implications; and inquires into the specific role of architecture, joined with the theory of Socialist Realism, in building Yugoslav socialism.
Summer aspect of phytoplankton communities in some Montenegrin lakes: Are there changes after more than two decades?
Rako?eviJelena
Archives of Biological Sciences , 2012, DOI: 10.2298/abs1202745r
Abstract: Qualitative and quantitative phytoplankton compositions of 10 Montenegrin lakes were investigated in the summer of 2007. The obtained results were compared with a previous study-period that was undertaken two decades ago. In the first period, diatoms numerically dominated the phytoplankton community in all studied lakes, while in the second period, the same was observed only in three of the ten lakes; in other studied lakes the relative contributions of green algae, dinoflagellates and/or cyanobacteria increased, while the contribution of diatoms decreased. The shift observed in phytoplankton composition and diversity in some of the studied lakes indicates an increase in the trophic level over the two decades. The sustainable management plan of the aquatic ecosystems in Montenegro should include the establishment of an environmental monitoring system in order to record any alterations that may take place in water quality.
Spatial and temporal distribution of phytoplankton in Lake Skadar
Rako?eviJelena
Archives of Biological Sciences , 2012, DOI: 10.2298/abs1202585r
Abstract: Phytoplankton seasonal succession and spatial heterogeneity were studied in Lake Skadar from February to December 2004. A total of 167 taxa from 6 algal divisions were observed, with Bacillariophyta being best represented (52.8%). The general pattern of phytoplankton seasonal succession in Lake Skadar was: Bacillariophyta in the spring, Chlorophyta in early summer, Cyanobacteria and Chlorophyta in late summer and Bacillariophyta and Chlorophyta in autumn and winter. Distinct spatial heterogeneity was observed. The central, open part of the lake (pelagic zone) was characterized by dominant euplanktonic species, mostly diatoms, whereas the western and northwestern parts (more isolated and shallower) had higher abundance of greens and blue-greens and a higher percentage of resuspended benthic-epiphytic forms in the phytoplankton community. Comparison with former phytoplankton data showed distinct differences in terms of the qualitative and quantitative composition of the phytoplankton community of Lake Skadar, which indicates lake deterioration.
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