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Search Results: 1 - 10 of 461775 matches for " Nata?a Jug "
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Nataa Jug,Uro? Barud?ija,Goran Durn
Rudarsko-Geolo?ko-Naftni Zbornik , 2008,
Abstract: The purpose of this study is to present the field and laboratory researches, statistical analyses and graphical displays of the results of Hg soil gas and Hg soil distribution in the area around former mining site Zrinski“ on Mt. Medvednica. The values of overall Hg concentrations in the soil gas show lognormal distribution, and their spatial distribution outlines the connection with the present Pb-Ag-Zn mineralization and confirms anthropogenic origin of uneven landscape relief (waste rock clusters). Regression analysis of the dependence between Hg contents in the soil gas and the distance from the mine entrance (correlation coefficient r) also points to the considerable spatial dependence. Hg soil contents show as well distribution similar to lognormal, and there is a slight correlation when compared with Hg soil gas content. Concentrations are mostly within background values, except in the immediate vicinity of the mine entrance where the values are significantly higher due to the mineralization influence concentrated in the waste-rock clusters. Soil pollution caused by mercury is of local character with the spreading tendency to the south-west because of the dominant relief influence. Mercury found in the soil of the research location derives from the present mineral body and former mining activities, while possible anthropogenic atmospheric inputs from remote sources can not be proven on the basic of conducted research studies.
Paramagnetic tunneling systems and their contribution to the polarization echo in glasses (extended)
A. Borisenko,G. Jug
Physics , 2011, DOI: 10.1103/PhysRevLett.107.075501
Abstract: Startling magnetic effects on the spontaneous polarization echo in some silicate glasses at low and ultra-low temperatures have been reported in the last decade or so. Though some progress in search of an explanation has been made by considering the nuclear quadrupole dephasing of tunneling particles, here we show that the effect of a magnetic field can be understood quantitatively by means of a special tunnel mechanism associated with paramagnetic impurities. For the Fe-, Cr- and Nd-contaminated glasses we provide reasonable fits to the published data as a function of applied magnetic field and temperature.
Microalbuminuria in pediatric patients with hypertension  [PDF]
Nataa Mar?un Varda
Health (Health) , 2013, DOI: 10.4236/health.2013.54A006

Microalbuminuria in adults has been found to be an early indicator of both renal and systemic vascular disease, as well as significant cardiovascular risk predictor and therapeutic marker. Its role in essential hypertension in adults has also been well established. As diseases like hypertension and obesity have their roots in childhood and are already present in children, influencing the morbidity in adulthood, the role of microalbuminuria has been extensively investigated in children as well. Most investigations have been performed in diabetic children, confirming its clinical significance. There is also enough evidence to suggest that microalbuminuria in obese children should be taken as seriously as in children with diabetes. In children with hypertension rare studies also indicate that its presence identifies hypertensive children with higher risk, although the exact role has to be confirmed in prospective and larger studies. The mechanisms of microalbuminuria onset could be the result of renal damage secondary to hypertension or underlying renal and systemic endothelial dysfunction. Evidence from small intervention studies in children with microalbuminuria also suggests that early intervention with antihypertensive drugs is likely to be beneficial, pointing out the role of microalbuminuria as a therapeutic marker in children too. In addition, we have to stress the importance of follow-up of children with microalbuminuria, confirmation of its persistence and identification of progression. However, longitudinal prospective studies in children, investigating its future cardiovascular risk, are still lacking.

Hypertension in Adolescent  [PDF]
Nataa Mar?un Varda
Health (Health) , 2016, DOI: 10.4236/health.2016.811110
Abstract: Hypertension in adolescents is, as in other patients, one of the important cardiovascular risk factors, associated with hypertension in adults and with appearance of cardiovascular complications later in life. In recent years it is in increase, in parallel with occurrence of overweight in this age group. There is mostly essential or obesity-related hypertension. It is often asymptomatic, therefore it holds true also for adolescents, that it has to be actively searched, especially in risk groups such as overweight adolescents, adolescents with positive family history or some of the other classical cardiovascular risk factors. If we have normal-weight adolescent with important hypertension or symptomatic adolescent without positive family history, the possibility of secondary hypertension has to be thinking of and extended, on possible cause focused and stepwise diagnostics performed. In this case, the treatment is etiological. Otherwise, the first-line treatment in adolescents comprises nonpharmacological treatment measures. Sometimes, because of poor nonpharmacological treatment compliance and presence of hypertensive-target organ damage, antihypertensive medications have to be introduced. However, preventive actions represent the most important task, in the form of primary and primordial prevention. In this article, diagnostic approach, prevention and treatment strategies in adolescents are shortly presented.
Nataa Jela?a
Ljetopis Studijskog Centra Socijalnog Rada , 2002,
A Novel Type of Tri-Colour Light-Emitting-Diode-Based Spectrometric Detector for Low-Budget Flow-Injection Analysis
Nataa Gros
Sensors , 2007, DOI: 10.3390/s7020166
Abstract: In this paper we describe a low-cost spectrometric detector that can be easily assembled in a laboratory for less than €80 with a minimal number of optical components and which has proved sensitive and flexible enough for real-life applications. The starting point for the idea to construct this small, compact low-cost spectrometric detector was the decision to use a tri-colour light-emitting diode (LED) of the red-green-blue (RGB) type as a light source with the objective of achieving some flexibility in the selection of the wavelength (430 nm, 565 nm, 625 nm) but avoiding the use of optical fibres. Due to the dislocation of the emitters of the different coloured light, the tri-colour LED-based detector required an optical geometry that differs from those that are described in literature. The proposed novel geometry, with a coil-type glass flow-through cell with up to four ascending turns, proved useful and fit for the purpose. The simplicity of the device means it requires a minimal number of optical components, i.e., only a tri-colour LED and a photoresistor. In order to make a flow-injection analysis (FIA) with the spectrometric detector even more accessible for those with a limited budget, we additionally describe a low-cost simplified syringe-pump- based FIA set-up (€625), the assembling of which requires no more than basic technical facilities. We used such a set-up to test the performance of the proposed spectrometric detector for flow-injection analyses. The tests proved its suitability for real-life applications. The design procedures are also described.
The application of algorithm for introduction of the automatization in process of symbol-scale mapping
Uro?ev Nataa
Glasnik Srpskog Geografskog Dru?tva , 2010, DOI: 10.2298/gsgd1003239u
Abstract: Beside the main subject, this paper will present principals of average graphical weight of thematic map. The algorithm is based on this subject and also on basics of symbol-scaled(2) mapping. Maps are very often overloaded by symbols. The main goal of thematic mapping is to represent the quantitative and qualitative characteristics of the occurrences in geospace. These two factors are combined in this algorithm. Modern GIS software has possibility to create thematic maps by methods of signs, cartograms and cart diagrams. These are very precise maps and they are presenting distinctive occurrence but also very graphical chaotic with lot of overcastted areas that are overloading the map. These are the reasons why it’s necessary to create this algorithm which would give some balance among boundaries of thematic map area.
The analysis of different types of factors that have influence on degree of graphical weight of thematic map
Uro?ev Nataa
Glasnik Srpskog Geografskog Dru?tva , 2008, DOI: 10.2298/gsgd0803025u
Abstract: We can define thematic maps as an graphical instrument for systematic presentation of qualitative and quantitative characteristics of spatial determinate occurrences and their relations. They can be powerful instrument in making decision in process of spatial governing. The thing that gives last judgment about situation in space is synthetic interpretation occurrences expressed by visual, functional and physiological factors. These factors give also the influence at graphical weight of thematic map, and also at quality of necessary information.
Sources of social capital
Golubovi? Nataa
Sociologija , 2008, DOI: 10.2298/soc0801017g
Abstract: The aim of this paper is to analyze sources of social capital, i.e. that segment of the overall capital which is embedded in social ties and relationships. This is not an easy task because in theoretical debates differences between sources, manifestations and effects of social capital are very often blurred. It is argued that different approaches in the analysis of the sources of social capital could be integrated into one conceptual model which would include two direct sources of social capital social networks and social norms. In addition, formal institutions and trust are also closely related to social capital. These determinants influence the development of social capital and are mutually related.
Capital theory and rational choice
Golubovi? Nataa
Sociologija , 2009, DOI: 10.2298/soc0902189g
Abstract: Almost from the very beginning of economic science the notion of capital has been the subject of numerous controversies. The main reason for the concept's controversial nature is that it explains interest and profit. In Marxian theory, where 'manner of production' determines forms of activities, mutual relationships and life of individuals, capital appears as a social phenomenon i.e. social relation. Goods and money are not capital by themselves but become capital in the capitalist way of production. Economics mainstream is based on methodological individualism upon which explanation of social phenomena and processes must be derived from individual behavior and motivation. Capital, therefore, is not a product of capitalism as a socially and historically specific form of economic organization, but is rather perceived as connected to the individual and his or her rational behavior. Rational choice is the basic and sometimes the only explanatory factor in the neoclassic theories of capital. Although theories of human and cultural capital point out the interdependence between individual activity and choice on the one hand, and social position on the other hand in the process of capitalization, the connection remains in the background and somehow unclear. A more explicit indication of the interdependence between social structure and choice can be found in the theory of social capital. The goal of this paper is to explore the role of rational choice theory in explaining the nature of capital.
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