bluuebunny/crossref_metadata_2025 huggingface dataset:
Estimation of cost-effectiveness of poplar wood production in poplar plantations in Ravni Srem based on the method of pay back period
Authors: Keca Ljiljana
Published: June 2011

Poplar plantations are a category of fixed assets in forestry, i.e. the
assets with a biological character. They are related to their site, they are
cultivated for a relatively long time and they have a relatively long
utilization cycle, with the yield development determined by the plantation
growth and age. Plantations transfer their value gradually to the obtained
products during the period of their harvesting, and, by the realization of
the products, the means invested in the plantation establishment are
reproduced. The period of investments in poplar growing can be relatively
long, and so is the period of harvesting. Therefore, it is important to
determine the time of the return of the capital invested in these and similar
plantations. This paper presents the analysis of commercial profitability of
poplar cultivation according to the indicator for the assessment of projects
in agriculture and forestry - pay back period. The application of pay back
period (PBP) calculation can affect greatly the reliability of predicting the
degree of economic effectiveness of investments, and also the potential risks
for the investor in his decisions on the investments in poplar cultivation.
The analysis of poplar clone I-214 plantations was carried out in the area of
Ravni Srem, under different rotations and soil types. Based on the analysis
of costs and receipts in different plantation ages, and using the method of
pay back period, the objective of the study was to evaluate the possible pay
back period of invested capital in wood production in poplar plantations. PBP
is practically unacceptable by the investor under the discount rate of 6%.
The most favorable situation is in the youngest stands, using the discount
rate of 2%. The situation regarding the pay back period in the over-aged
stands is utterly unfavorable, so the credit cannot be repaid under any
conditions. This fact supports the idea that the production cycle length
should be shortened.
Assessment of production potential of podzolised and typical acid brown soils in some forest types in the area of Veliki Jastrebac
Authors: Knezevic Milan , Kosanin Olivera , Milosevic Rajko
Published: June 2011

The characteristics of podzolised and typical acid brown soils were studied
in beech forests in Management Unit ?Lomnicka Reka? on Veliki Jastrebac.
Also, their production potential was evaluated based on their
physico-chemical properties. As productivity is a realised value of the soil
fertility, realized through the yield and increment, the site productive
capacity was evaluated based on mean maximal heights. The correlation
analysis shows the extent to which the characteristics of podzolised and
typical acid brown soils affect the mean maximal heights.
Asteretum lanceolati: Xenospontaneous community on wet and riparian habitats
Authors: Obratov-Petkovic Dragica , Bjedov Ivana , Skocajic Dragana , Djunisijevic-Bojovic Danijela , Djukic Matilda , Grbic Mihailo
Published: June 2011

Invasive species Aster lanceolatus grows on moist habitats on the whole
territory of Serbia. In Belgrade, this species is recorded with a higher
degree of presence at a number of localities. With the aim to investigate the
community in which this species is dominant, the wide area of Serbia was
researched, and 8 localities on the territory of Belgrade were chosen for the
analysis of the community. Floristic structure of the community was
determined by the standard Braun-Blanquet method (1964), phytogeographical
analysis was performed according to Gajic (1980, 1984), and determination of
life forms according to Raunkier (Ellenberg, Mueller-Dombois, 1967). pH soil
analysis and electric conductivity (EC) were performed at all investigated
localities. It was established that the community dominates the moist
habitats of Belgrade. It is composed of 104 species and among them Aster
lanceolatus Willd., Cichorium intybus L., Agropyrum repens (L.) Beauv.,
Calystegia sepium (L.) R. Br., Cirsium arvense (L.) Scop., Symphytum
officinale L. and Rumex obtusifolius L. are the most frequent. In relation to
life forms, the community has hemicriptophytes character, and in relation to
phytogeography Euroasian and Middle Europaean floral elements are dominant,
with a high presence of cosmopolitan and adventive floral elements. On the
locialities Veliko Ratno ostrvo (island) and Makis, EC values point to the
fact that the amount of nutrient in the soil is higher than at other
localities.
Structural, production and dynamic characteristics of the strict forest reserve “Racanska sljivovica“ on mt. Tara
Authors: Pantic Damjan , Medarevic Milan , Bankovic Stanisa , Obradovic Snezana , Sljukic Biljana , Pesic Biljana
Published: June 2011

Mixed forests of broadleaves and conifers, thanks to their high productivity
and high biodiversity, are the most valuable part of the growing stock in
Serbia. The aim of this research was to analyze the mixed old-growth forests
of fir, spruce and beech in the reserve ?Racanska Sljivovica? so as to define
the laws which could be applied in the future forest management on Mt. Tara.
The research was based on the data of six periodic complete inventories
followed by standard dendrometric and statistical processing. Forest
structure was similar to the typical selection structure. The recruitment
dynamics (except beech) was relatively favourable, with the ratio to dead
trees amounting to 1.72. The number of trees and the volume increased
constantly, attaining 422.2 trees?ha-1, i.e. 800.3 m3?ha-1, and the volume
increment was above 12 m3?ha-1, despite a slight drop. Silver fir was the
protagonist of the selection structure and productivity. It is necessary to
stimulate the survival and development of beech at the concrete site, to
examine the balanced number of trees and volume, and to investigate the
relationship between the number of recruited trees and the stand volume.
Land use change for flood protection: A prospective study for the restoration of the river Jelasnica watershed
Authors: Ristic Ratko , Radic Boris , Vasiljevic Nevena , Nikic Zoran
Published: June 2011

Serbia?s hilly-mountainous regions are extremely vulnerable to flooding as a
consequence of their natural characteristics and human impacts. Land
mismanagement influences the development of erosion processes, and causes
soil degradation that significantly reduces the land?s capacity to infiltrate
and retain rainwater. Inappropriate land use as well as development
activities replace permeable with impervious surfaces in the watershed. This
leads to more rapid runoff generation and the more frequent appearance of
torrential floods and bed-load deposits on downstream sections. Environmental
degradation creates economicsocial problems within local societies which is
often followed by depopulation. Restoring watersheds to their optimal
hydrologic state would reduce flood discharge and by increasing groundwater
recharge would increase both low-flow and average discharges in springs and
streams. Best management practices could be developed through the application
of specific combinations of biotechnical, technical and administrative
measures, and by using the concept of ?natural reservoirs?. The design of
such practices is explored through a case study of the watershed of the river
Jelasnica, southeastern Serbia. Realization of these planned restoration
works should help decrease the annual yields of erosive material by 44.1% and
the specific annual transport of sediment through hydrographic network by
43.6%. Representative value of the coefficient of erosion will be reduced
from Z=0.555 to Z=0.379. The value of maximal discharge Qmax-AMCIII
(1%)=54.17 m3?s-1, before restoration, is decreased to Qmax-AMCIII (1%)=41.22
m3?s-1 after restoration, indicating the improvement of hydrological
conditions, as a direct consequence of land use changes. Administrative
measures are applied through ?Plans for announcement of erosive regions and
protection from torrential floods in the territory of Leskovac municipality?.
Nickel content in plants and soil in the area of the protected natural resource “Avala” - Belgrade
Authors: Stankovic Dragica , Knezevic Milan , Krstic Borivoje , Sijacic-Nikolic Mirjana , Vilotic Dragica
Published: June 2011

The purpose of this research is above all focused on the aim of determining
the load of ecosystem or rather soil and plants with the heavy metal Ni and
the level of accummulation in this area so that on the basis of the obtained
results adequate protection measures could be timely taken. The research of
nickel (Ni) content in the leaves of herbs and woody plants growing under
urban conditions in comparison with the nickel concentrations in the plant
leaves in the protected natural resource ?Avala? (16 km away from Belgrade)
indicates that the recorded values of nickel concentrations by locations are
statistically significantly different and range from A to F on locations 1, 2
and 3 while on location 4 in urban conditions the values range from A to B in
accordance with Duncan?s Test.
Beech and fir association (Abieti-Fagetum serpentinicum Beus 1980) on Suvobor
Authors: Cvjeticanin Rade , Novakovic Marijana , Perovic Marko
Published: June 2011

The association of beech and fir was researched on Mt. Suvobor, on
serpentinite bedrock. In the past, the beech and fir forest on Suvobor was
not studied, it was just referred to, so the objective of this paper was to
study the floristic characteristics of this forest, which will enable its
ecological-vegetational differentiation and widen the knowledge on beech and
fir associations on serpentinites. The studied plant community is
characterised by poor floristic composition and by the absolute domination of
fir in the tree layer. In the life form spectrum, the dominant plants are
phanerophytes, and the percentage of geophytes is increased, which points out
the mesophilous plant community. The spectrum of floral elements indicates
the dominance of the Central-European floral element, but also a significant
percentage of some more xerophilous elements, which is the consequence of a
specific parent rock.
Major characteristics of mixed fir and beech virgin forests in the National park Biogradska Gora in Montenegro
Authors: Curovic Milic , Medarevic Milan , Cvjeticanin Rade , Knezevic Mirko
Published: June 2011

In order to manage forest ecosystems at a sufficiently high biodiversity
level it is necessary to study the ecological, structural and production
characteristics of virgin forests. The research was directed towards
identifying the characteristics of mixed fir and beech forests
(Abieti-Fagetum s. lat.) in the area of the strict reserve of the National
Park Biogradska Gora in Montenegro. Basic characteristics of these forests
were researched in the process of definition of forest types. In this manner,
it is for the first time that a realistic base for typological management of
forests and forest ecosystems with similar ecological and structural
characteristics was provided for the specific sites.
Bald cypress (Taxodium distichum (L.) Rich.) in the protected area Veliko ratno ostrvo
Authors: Sijacic-Nikolic Mirjana , Vilotic Dragica , Veselinovic Milorad , Mitrovic Suzana , Jokanovic Dusan
Published: June 2011

Bald cypress is an introduced plant species in the protected area ?Veliko
Ratno Ostrvo?. It is growing outside its natural range, and in the given
conditions it is capable of natural regeneration. The aim of the research was
to study the adaptation, production and reproduction potential of this
species, as the base for the conservation and targeted utilisation of the
available gene pool.
Seasonal variability of Crvena river water mineralization
Authors: Manojlovic Predrag , Nikolic Milena , Mustafic Sanja , Lukovic Jelena
Published: June 2011

The mineralization of water and its content in Crvena River so far have not
been studied. Water sampling was conducted from April 2008 - May 2009. Total
mineralization is relatively low, which is consistent with the dominant
lithological structure (Permian red sandstone). Dry residue contains Ca2+
ion, with the increased participation of SiO2. During the observational
period it is clearly expressed seasonal effect. It is reflected not in the
direct but the indirect impact. Based on the ratio of individual ions a model
is determined for estimation of water flow at the confluence of the Crvena
River in Nisava River. It could be applied to other drainage basins that have
not been studied so far.
The natural conditions as a limiting factor for the development of Serbian-Macedonian border area
Authors: Dragicevic Slavoljub , Milevski Ivica , Novkovic Ivan , Milojkovic Boban
Published: June 2011

Natural conditions of certain area imply to the complex influence of various
elements of the environment (surface, relief, climate, water, vegetation
type) and man, and knowledge of their recent state represents basis of an
integrated approach in the land use planning. Analysis of natural conditions
and processes in the Serbian-Macedonian border area is usually done through
the valorization of natural potentials, but aspect of their limiting
influence on the development of this territory - natural hazards assessment
has remained unresolved. Degree of natural hazards vulnerability of a certain
territory is an important factor in land use planning, because it represents
a threat to the undisturbed development of a certain teritory. The basic idea
of this paper is to provide multi-hazard assessment and the integral map of
areas vulnerable to various types of natural hazards in Serbian-Macedonian
border area. In this way seclusion of areas where natural conditions can
represent the limiting factor for the development of the analyzed territory
shall be performed.
The problem of the presence of relict cryoplanation morphology on mountain Tupiznica (Eastern Serbia)
Authors: Nesic Dragan
Published: June 2011

During several-year long research on Tupiznica (1160 m), a low limestone
mountain in eastern Serbia, some terraces, cirque niches and other
occurrences and forms in the highest parts of mountain with unfamiliar
genetic origin have been registered. Using the complex analysis of this
morphology, and relying on the achievements of contemporary geomorphology, we
have come to conclusion that the aforementioned terraces resemble relict
periglacial, or, cryoplanation relief, which has been taken from the fact
that Tupiznica was in its Last Glacial Maximum with its highest parts in the
zone of mountainous periglacial environment. Considering the fact that this
morphology is registered on a low mountain, the aim of this paper is to prove
the given assumption and solve this problem.
Chemical erosion and hydrologic budget for the Susure karst plateau
Authors: Nikic Zoran , Nikolic Jugoslav , Ristic Ratko , Stojadinovic Dusan
Published: June 2011

The karst plateau of Susure, about 4.5 km2 in surface area, is situated on
the Jadovnik eastern offset, western Serbia. The plateau is a morphologic
unit higher 15 m to 30 m than the surrounding terrain. The unit consists of
crushed and karstified Middle Triassic limestones. Numerous hydrogeological
and geomorphologic features of the plateau are attractive for visitors in
this economically underdeveloped country. Rocks building up the surrounding
terrain are largely peridotites. Surface streams flow neither into nor off
the plateau. Atmospheric precipitations discharge to evapotanspiration and
filtration underground. More than eighteen constant springs at the
limestone/peridotite tectonic contact drain fracture aquifers on the karst
plateau border. Measured precipitations and springflows were the input and
output data for accounting water budget of an aquifer of Middle Triassic
limestones in the Susure plateau.
Application of Google Maps API service for creating web map of information retrieved from CORINE land cover databases
Authors: Kilibarda Milan , Protic Dragutin , Nestorov Ivan
Published: June 2011

Today, Google Maps API application based on Ajax technology as standard web
service; facilitate users with publication interactive web maps, thus opening
new possibilities in relation to the classical analogue maps. CORINE land
cover databases are recognized as the fundamental reference data sets for
numerious spatial analysis. The theoretical and applicable aspects of Google
Maps API cartographic service are considered on the case of creating web map
of change in urban areas in Belgrade and surround from 2000. to 2006. year,
obtained from CORINE databases.
Analysis of degraded elements of environment at municipality Ub by remote sensing: Contribution to most vulnerable area of the municipality Ub
Authors: Milanovic Misko , Ninkovic Milos , Bakrac Sasa
Published: June 2011

This paper analyzes the affected parts in municipality Ub by remote sensing.
On the basis of determining the recent state of environmental elements of
the municipality with the clip, suggestions were made for the protection and
control. Special attention is devoted to the analysis of the most vulnerable
parts of the municipality, located in the eastern and northeastern part of
the municipality. In those parts of the observed traces of heavy metals in
the images, and partly visible, and erosion processes. For the purposes of
monitoring environmental elements in Ub, the results of remote sensing
analysis are presented.
Climatic extremes in Serbia: Definitions, types and classification
Authors: Andjelkovic Goran
Published: June 2011

Climatic extremes as negative events are named to be one of the major
problems of humankind today. Still, their complex and systematic study is
missing - they are studied only as an ?attachment? to the problem of
contemporary climate changes. Number of terms is used arbitrarily, such as
climatic extremes and extreme climate events. From the geographical
perspective, there is a need to define extremes and classify them at first,
and only then to establish criteria for their identification, to link the
problem to the geographical base, etc. There should be a specific approach
for every area on Earth. In this work 31 extreme climate events have been
isolated and defined, and all of them, according to their specific
characteristics and their harmfulness, have been classified into 5
categories. Systematic geographical studies of these events could intensify
the fight against atmospheric hazards in Serbia and help the system of
insurance of people and material goods. There should be regulations that
would include precise definitions of all hazards with precise borders of the
harmfulness of the event, then the assessment of the possible endangerment
and the possibility of protection in certain regions, etc.
Biogeographic foundations of creating protected areas networks
Authors: Djurdjic Snezana
Published: June 2011

In this study, biogeographic adequacy and potentials of application systems
for nature conservation through creating networks of protected areas will be
analyzed. This approach in overcoming the consequences of the more intense
process of fragmentation and deficiency of habitats has distinguished
appliance in the practice of nature conservation in spatial proportions,
which include multiple heterogeneous biotic and ecological conditions even
of the entire continents.
Strategic programmes for sustainable development of local communities
Authors: Ljesevic Milutin , Mihajlovic Bojana , Cuculovic Rodoljub
Published: June 2011

The concept of sustainable development is recent one, but this problem has
been dealt with by the humanity from its beginnings. Back in the ancient
time, a number of thinkers already understood the truth that quality of life
meant actually good health, material goods and regulated social life.
Nowadays, this concept is thought about in a more specific way. A sustainable
development theory has been developed and become a leading premise of human
life quality at international level. The term ?sustainable development? is
interpreted in various ways. Among the representatives of the futuristic
elite of highly developed countries, the concept of sustainable development
implies maintenance of production level and consumption of resources in this
present time in order to stop the excessive consumption of natural resources
and maintain the environment. This would, in fact, maintain the status of
economic relations in the world and would conserve the status of privileged
nations acquired at the time of great colonial empires.
Patency of internal thoracic artery and vein grafts according to revascularized coronary artery properties
Authors: Redzek Aleksandar , Mihajlovic Bogoljub , Kovacevic Pavle , Cemerlic-Adjic Nada , Pavlovic Katica , Velicki Lazar
Published: June 2011

Long-term results of surgical myocardial revascularization are determined by
the quality of grafts and the progression of atherosclerosis in coronary
arteries. The aim of the study was to evaluate the patency rate of internal
thoracic artery and great saphenous vein grafts in relation to the
hemodynamic properties of revascularized coronary artery. The patency of
internal thoracic artery and great saphenous vein grafts was analyzed in
relation to the degree of coronary stenosis estimated by angiography and the
diameter of distal portion of coronary artery assessed intra-operatively. The
long-term patency of great saphenous grafts depends on the distal coronary
artery diameter but not on the degree of coronary artery stenosis. The
patency of internal thoracic artery graft depends on the degree of co?ronary
artery stenosis but not on the distal coronary artery diameter. The internal
thoracic artery is the superior graft in coronary surgery, but the low
patency rate in case of moderate coronary artery stenosis emphasizes the
importance of selective approach.
Quantitative analysis of vascular network of oculogyric nerve nuclei
Authors: Sladojevic Igor , Krivokuca Zdenka , Bucma Tatjana , Gajanin Vesna
Published: June 2011

Introduction. Nuclei of oculogyric nerves (principal oculomotor nucleus,
trochlear nucleus and abducens nucleus) are densely vascularized brain?stem
structures. The aim of this study was to determine quantitative
characteristics of the vascular network of these nuclei. Material and
methods. The study was done on 30 adult brainstems, both male and female,
without diagnosed neurological disturbances. Three-millimetrethick stratums
were taken in transversal plane and cut in 0.3 micrometer semi-serial
sections stained with Mallory method. The images of studied nuclei were taken
with ?Leica? DM 1000 microscope and ?Leica? EC3 digital camera under 400x
magnification, and analyzed by ImageJ software with A 100 grid. The
statistical analysis was performed by Statistical Package for the Social
Sciences software with 5% level of significance. Results. A statistically
significant difference was found in the volume and surface density between
principal oculomotor nucleus and trochlear nucleus, and between trochlear
nucleus and abducens nucleus. No difference was found in the length density.
Discussion. The results of this research match the results of studies on
characteristics of vascular network of oculogyric nerve nuclei, while the
comparison of vascular networks of these nuclei, substantia nigra,
vestibulocochlear nuclei and precentral gyrus illustrates differences in
quantitative characteristics of blood vessels in these structures.
Conclusion. Blood vessels of principal oculomotor nucleus and abducens
nucleus have similar dimensions and approximately the same arborization
pattern, while vessels of trochlear nucleus have significantly smaller
dimensions and density.
The most frequent injury with mechanical corn picker during harvest: Possibility of prevention
Authors: Momcilovic Dragan , Prokes Bela , Slavnic Nikola
Published: June 2011

Introduction. Inappropriate machine operating, long work hours and decreased
concentration of machine operators create conditions for getting injured. A
corn picker is the most often cause of hand injuries among agricultural
machineries. Material and methods. The study included 43 persons with hand
injuries during corn harvest, treated in the four-year period (2006-2009).
The study subjects were analyzed by sex, age, season, type of injury,
affected parts of the hands, length of treatment and data on being trained to
work with the corn picker. Results. In the observed period hand injuries
caused by a corn picker occurred 10.75 times a year on average on the
territory gravitating to the Clinical Centre of Vojvodina. The most frequent
hand injuries were recorded in male operators, most of them aged 21-59, and
the greatest number of injuries happened in October According to the type,
crushing of hand was the dominant type of injury. Fingers of hand were most
frequently grabbed. The average duration of treatment was 14.37 days, and the
majority of patients were treated in hospital up to 14 days. Discussion and
Conclusion. The average occurrence of hand injuries reported in this paper is
significantly lower than it was reported in one study conducted earlier. The
data regarding training to operate the respecti?ve machinery indicate that
93.2% of the injured have not been trained appropriately, and 37.12% did not
have any personal protective devices. Training of farmers to operate
agricultural machinery should be carried out continually in future, as it has
been regulated by the Law on Safety at Work and Health.
Vascular dementia: Clinical and neuroradiological correlation
Authors: Racic Dusko , Slankamenac Petar , Vujkovic Zoran , Miljkovic Sinisa , Djajic Vlado , Dominovic-Kovacevic Aleksandra
Published: June 2011

All stroke patients admitted to Banjaluka Clinical Centre during one year
were evaluated by the standard protocol during the hospitalization and three
months after the stroke. It included clinical, functional and
neuropsychological examination and neuroimaging. Dementia was diagnosed
according to the criteria of National Institute of Neurological Disorders and
Stroke-Association Internationale pour la Recherche et l?Enseignement en
Neurosciences. Demographic and clinical variables were examined. After the
exclusion of the patients who died (n=139) and those who refused to be
interviewed during the 3-month follow up (n=52) and those with pre-stroke
dementia (n=22), a total of 273 (58.8%) patients underwent neuropsychological
examination 3 months after the stroke. Fortynine (19.52%) of them met the
criteria for vascular dementia. The predictors of vascular dementia were age,
atrial fibrillation, cognitive and functional impairment on admission and
functional outcome, subcortical lacunar infarctions, leukoaraiosis, multiple
and bilateral brain lesions. Dementia is frequent after stroke and it cannot
be determined by a single factor. A combination of several factors increases
the critical threshold for cognitive decline.
Influence of different types of surgical suture materials on mehanical damage of oral mucosa
Authors: Mirkovic Sinisa , Djurdjevic-Mirkovic Tatjana
Published: June 2011

Introduction. Throughout history many kinds of different suture materials
have been used for closing and suturing surgical wounds. Medical literature
describes four basic characteristics of suture material: knot safety, tensile
strength, tissue reaction and wound safety. The tissue reaction is reflected
in an inflammatory response, which, though minimal, occurs during first two
to seven days after implanting suture into the tissue. The aim of this
research was to investigate whether different suture materials affect the
development of decubital damage of oral mucosa, which to a great extent can
compromise the process of wound healing. Material and methods. The
investigation was designed as a prospective clinical study including 150
patients of both genders, aged between 25 and 60. The patients were
distributed into three groups of 50 persons. The suture Black Silk was used
in the first group, designated as a control group. Nylon and Vicril were used
in the second and third group, i.e. experimental groups, respectively.
Decubital damage of the surrounding soft tissues was the main parameter for
monitoring the effects of selected suture materials on the oral mucosa.
Conclusion. The comparison of results obtained for the investigated suture
materials after suturing oral mucosa revealed that certain advan?tage could
be given to synthetic monofilament suture materials
Stress as a risk factor in the development of brain stroke
Authors: Antic Ivan , Petrovic Branislav , Rancic Natasa
Published: June 2011

Introduction. In many developing countries and in countries in transition, an
increased incidence of cerebrovascular disease has been observed. The aim of
this study was to determine the influence of acute and chronic stress on the
development of acute brain stroke and its relapse. Material and methods. The
study included all recorded cases of cerebrovascular disease in the
municipality of Doljevac in the period 2005-2007 (the stroke victims), and
230 healthy controls. By using the method of interview, the frequency of
chronic stress situations was examined, as well as the occurrence of acute
stress situations 24 hours prior to the acute brain stroke and its relapse.
Results. In the group which consisted of stroke victims, a large number of
subjects was found to have had an acute stress 24 hours prior to the onset of
the disease, and the type of stress which proved to be statistically
significant was the one which had been provoked by problems between family
members (?2=4,03; p=0,04). All of the chronic stressors were more frequent in
the group consisting of stroke victims than in the control group and among
the statistically significant stressors were stressful situations in the
family and at work. In recidivists, a greater presence of acute and chronic
stressors was observed, but the statistical significance was not proved when
this disease occurred again. Conclusion. The presence of acute stressors was
found to have been more frequent in the group of stroke victims 24 hours
prior to the on?set of the disease. The effect of acute and chronic stressors
upon the brain stroke recidivism has not been statistically proved yet.
Predictors of self-rated health of citizens on the territory of endangered political security
Authors: Mirkovic Momcilo , Simic Snezana
Published: June 2011

Introduction. Self-rated health is generally accepted by researchers as a
valid measure of health status. The aims of the study were to investi?gate
how the adult inhabitants of northern Kosovska Mitrovica described their
health and which variables were the predictors of self-rated health status
among that population. Method. The research was done as a cross-sectional
study on the representative sample of 318 adult inhabitants of northern
Kosovska Mitrovica in 2006. The instrument of research was a questionnaire
containing questions about self-rated health and demographic and
socio-economic characteristics, mental health, social interaction,
possibilities of performing everyday activities, health behaviour and habits,
diseases and injuries, utilization of health care service. The independent
variables were defined through the factor analysis taken from these groups of
questions. The multivariate stepwise linear regression was done to determine
the correlation between self-rated health and independent variables. Results.
More than half of the respondents (54.7%) assessed their health as good or
very good. The predictors of self-rated health were gender, mood problems,
myocardial infarction, chronic bronchitis, psychic and neurotic disorders,
rheumatic arthritis, high blood sugar, utilization of private gynaecologist
service and paying for diagnostic service. Conclusion. Most of the
respondents from northern Kosovska Mitrovica assessed their own health as
good or very good. Bad and very bad health was significantly associated with
females, problems with mood, myocardial infarction, chronic bronchitis,
psychic or neurotic disorders, rheumatoid arthritis and high blood sugar.
Good and very good health was significantly associated with utilization of
private gynaecologist service and paying for diagnostic service.
Treatment effects of Co-amoxiclav (Amoxiclav 2x) in acute exacerbation of severe chronic obstructive pulmonary disease: Clinical evaluation
Authors: Andrijevic Ilija , Povazan Djordje , Andrijevic Ljiljana , Povazan Anika , Milutinov Senka
Published: June 2011

Introduction. The exacerbation of chronic obstructive pulmonary disease is
most often induced by an infection of bacterial origin in over 50% of the
cases (or mixed bacterial and viral infection). This study was aimed at
evaluating clinical effects of antibiotics co-amoxiclav. Amoxiicillin with
clavulanic acid in the treatment of patients with severe chronic obstructive
pulmonary disease exacerbation. Material and Methods. The investigation
included 38 patients with severe chronic obstructive pulmonary disease
exacerbation hospitalized at the Institute for Pulmonary Diseases of
Vojvodina, Sremska Kamenica. The patients were randomly selected for the
antibiotic treatment with Amoxiclav twice a day in 12 hour intervals. The
clinical effects of the applied treatment were evaluated by analyzing certain
laboratory findings, microbiological sputum findings and improvement of
subjective symptoms. Results. Of the examined subjects, 65% were males and
35% were females, their mean age being 66.4+8.86, and who were mostly smokers
(73%). After the completion of applied antibiotic treatment, a significant
reduction and normalization of all inflammation markers were recorded, as
well as a significant improvement of the patients? subjective symptoms. The
positive microbiological sputum findings (Haemophilus influenzae,
Pseudomonas aeruginosa and Streptococcus pneumoniae) were recorded in 13.58%
of the patients. The bacterial agent was eradicated on the third day of the
applied treatment. The mean length of the treatment was 7.07+0.91 days, with
no undesirable treatment side effects observed. Conclusion. The antibiotic
therapy is justifiable as the initial treatment regimen of severe chronic
obstructive pulmonary disease exacerbation and amoxicillin with clavulanic
acid is reported as the first-line antibiotic drug in most pharmacotherapy
guidelines.
Gestational trophoblastic disease: Literature review
Authors: Milenkovic Vera , Lazovic Biljana
Published: June 2011

Gestational trophoblastic disease is characterized by abnormal proliferation
of pregnancy-associated trophoblastic tissue with malignant potential.
Gestational trophoblastic disease covers a spectrum of conditions including
hydatidiform mole, invasive mole, choriocarcinoma and placental site
trophoblastic tumour. It is very important to understand the pathophysiology
and natural history of the disease in order to achieve faster recognition and
effective treatment. The presence and course of the disease can be monitored
with quantitative levels of human chorionic gonadotrophin in all cases.
Clinical signs and symptoms are usually insufficient to diagnose and predict
the extent of disease. Nowadays, gestational trophoblastic diseases are the
best treated gynaecological malignancy thanks to modern technology. This
review covers various aspects of gestational trophoblastic disease: its
development, epidemiology, aetiology and pathogenesis, as well as its
classification, clinical manifestations and diagnostic methods.
Pericarditis and cardiac tamponade: Urgent condition not only in cardiology
Authors: Sakac Dejan , Kovacevic Dragan , Koracevic Goran
Published: June 2011

Introduction. Pericarditis is a condition with inflammation of the
pericardium; however, most of these conditions are not infective and many of
them are not even inflammatory. Pericarditis by its development can be acute,
subacute and chronic, and later, recurring or relapsing. Apart from
idiopathic, the causes of pericarditis are numerous, very often inflammatory,
most frequently caused by viruses, or tumours and neoplasms, diseases of
connective tissue, vasculitis, different allergic reactions, radiation,
thyroid gland diseases, uraemia, dissection of aorta etc. Clinical picture.
Accumulation of fluid in the pericardium in the amount sufficient to cause
significant obstruction of blood inflow in chambers can cause cardiac
tamponade. If it is not treated immediately, the outcome may be fatal. The
most common causes are tumours, viruses or uraemia. Cardiac tamponade should
be suspected in patients with a decrease in systemic arterial pressure or
presence of hypotension, tachycardia, silent and discreet heart beats,
increase in systemic venous pressure (Beck triad). Electrocardiogram may
result in tachycardia, QRS complex is of smaller voltage, often of reversed
polarity. The amount of effusion is estimated by echocardiography.
Conclusion. The cause of pericarditis should always be searched for. On the
other hand, during monitoring or treatment of numerous conditions which
could be a frequent cause of pericarditis, the presence of pericardial
effusion or cardiac tamponade should be suspected and detected in due time.
A timely intervention - pericardiocentesis, can prevent the fatal outcome.
Besides non-steroid anti-inflammatory medication, many prospective randomized
studies propose colchicine as addition to the standard therapy. When opting
for the proper treatment for pericarditis always keep in mind the current
diagnosis and cause of this condition.
Factors predisposing to cervical artery dissection
Authors: Divjak Ivana , Slankamenac Petar , Jovicevic Mirjana , Zikic Rabi , Popovic Nemanja
Published: June 2011

Introduction. Cervical artery dissection is a major cause of cerebral
ischemia in young adults and can lead to various clinical symptoms, some of
which are benign (e.g. headache, neck pain, Horner?s syndrome, and cranial
nerve palsy). However, most patients have a stroke or transient ischemic
attack. Epidemiology. The incidence of cervical artery dissection is low and
is estimated to be around 2.6 per 100,000 inhabitants. Mortality and
short-term recurrence rates are low; however, they may have been
underestimated. Pathophysiology. Although the pathophysiology is still
unclear, constitutional and partly genetic susceptibility of the arterial
wall has been proposed as a causal factor, triggered by infection or minor
trauma. Predisposing factors. In addition to the trauma to the neck, other
risk factors have been suggested, such as infection, migraine,
hyperhomocisteinamia, and the 67TT genotype of the
5,10-methylene-tetrahydrofolate reductase gene although evidence is sparse.
Genetic factors. Cervical artery dissection is now considered a
multifactorial disease caused by several genetic abnormalities and
environmental factors acting synergistically. Conclusion. Research aimed at
improving our understanding of the environmental and genetic factors
predisposing to cervical artery dissection and assessment of long-term
outcomes of this disease is needed. Better understanding of the underlying
pathophysiology and the natural history of the disease through large
prospective multicentre cohorts could also be helpful to improve therapeutic
and preventive strategies. Several multicentre efforts are already under way
to meet these needs.
Climate variations: Risk factor of commiting suicide
Authors: Milic Caslav , Kocic Sanja , Radovanovic Snezana
Published: June 2011

Introduction. Recently there have been more and more attempts at getting into
connection the frequency of suicide with climate factors, humidity changes,
atmospheric pressure. A large number of authors agree that suicide has
meteorological character and that weather can be a provoking factor in
suicidal persons. Suicides happen most frequently when the weather is warm,
stable, and sunny; then, when it is rainy, cloudy and with high humidity, and
least frequently when the atmospheric pressure and temperature are decreased
accompanied with wind. Climate variations and suicide. Men who commit suicide
show a significant, positive connection with indicators of temperature and
exposure to sun, and a significant, negative connection with indicators of
humidity and rainfall. Women who commit suicide show a less significant
connection with climate variations - indicators. Violent and non-violent
suicide. Regarding violent and nonviolent suicide, it has been proved that
violent suicide is affected by environmental temperature, sunny intervals,
raise in temperature in the previous few weeks. Higher envi?ronmental
temperature and increase in air temperature in the previous few weeks are the
most significant climate factors influencing the violent suicide rate. In
addition, each degree exceeding 18?C increases the violent suicide rate by
3.8-5%. Conclusion. The result of many investigations of the influence of
climate factors on committing suicide is that the suicide incidence reaches
its peak during early summer. Also, the sun radiation the day before suicidal
event is significantly connected with the increased suicidal risk. There is a
difference between sexes. If the sun were a trigger, men would have to be
exposed to it for a longer time than women.
Therapeutic approach to actinomycosis: Experience gained at the Department of infectious and tropical diseases
Authors: Katanic Natasa , Pavlovic Milorad , Bojovic Ksenija , Dulovic Olga , Gvozdenovic Eleonora , Simonovic Jasmina
Published: June 2011

Introduction. Actinomycosis is a chronic infectious disease caused by
anaerobic, gram-positive microorganisms from the order of Actinomyce or
Propionobacterium. The disease manifests itself mostly in cervicofacial form
and less frequently in thoracic and abdominal form. The study was aimed at
reviewing clinical manifestations and therapeutic approaches in treatment of
patients with Actinomycosis. Material and methods. The study sample consisted
of four patients with different clinical manifestations of Actinomycosis, who
had been treated at the Institute for Infectious and Tropical Diseases in
Belgrade in 2002, 2003, 2006 and 2008. Results. Four patients with
Actinomycosis were treated during the above mentioned periods of time. One
patient had kidney Actinomycosis, which developed into generalized
Actinomycosis. Two patients had the most common cervical form, while the
forth one had abdominal form; all patients received Penicillin G followed by
Ampicillin, during the period of four weeks to up to a year. Conclusion.
Actinomycosis is a rare disease, which imposes great diagnostic dilemmas. The
treatment of this disease requires long term use of antibiotics.
Diode laser trabeculoplasty in open angle glaucoma: 50μ vs. 100μ spot size
Authors: Andreic Veljko , Miljkovic Aleksandar , Babic Nikola
Published: June 2011

The study was aimed at evaluating the efficacy of diode laser trabeculoplsaty
in lowering intraocular pressure in patients with both primary open-angle
glaucoma and exfoliation glaucoma by using different size of laser spot. This
six-month, unmasked, controlled, prospective study included sixty-two
patients with the same number of eyes, who were divided into two groups.
Trabeculoplasty was performed with 50 ? and 100 ? laser spot size in the
group I and group II, respectively. Other laser parameters were the same for
both groups: the wave length of 532 nm, 0.1 second single emission with the
power of 600-1200 mW was applied on the 180 degrees of the trabeculum. The
mean intraocular pressure decrease in the 50 ? group (group I) on day 7 was
24% from the baseline and after six-month follow-up period the intraocular
pressure decrease was 29.8% (p<0.001). In the 100? group (group II), the mean
intraocular pressure decrease on day 7 was 26.5% and after six months it was
39% (p<0.001).
An unusual origin of proximal coronary bypass anastomosis in a patient with porcelain aorta: How we solved the problem
Authors: Kovacevic Pavle , Velicki Lazar , Redzek Aleksandar , Golubovic Miodrag , Till Viktor , Ivanovic Vladimir
Published: June 2011

Severe calcification of the ascending aorta (porcelain aorta) is a very
difficult condition in cardiac surgery because of a high embolization
potential during the process of cannulation, aortic cross-clamping and a
particular difficulty to suture the proximal anastomosis. We described a case
of a 68-year-old female referred to our Institute due to unstable angina.
Further diagnostics revealed a severe high grade, multilevel fibrolipid
symptomatic carotid stenosis and ostial left main coronary artery stenosis
and a highly calcified ascending aorta and aortic arch. We performed
simultaneous carotid segment replacement with the Dacron prosthesis and
revascularisation of the left anterior descending coronary artery. Proximal
venous anastomosis was created in the Dacron prosthesis of the right carotid
artery. Perfusion of the patient was achieved via the graft sutured at the
right subclavian artery due to impossibility of direct aortic cannulation.
Multifocal choroidopathy syndrome: A case report
Authors: Cekic Sonja , Stankovic-Babic Gordana , Jovanovic Ivan
Published: June 2011

Introduction. Multifocal choroidopathy syndromes are a group of rare
disorders, which involve a primary pathologic process occurring at or near
the level of the retinal pigment epithelium, with or without choriocapillaris
involvement. The aetiology of multifocal choroidopathy syndrome is still
unknown. A case report. We present a case of multifocal choroidopathy
syndrome. A 54-year-old woman was referred to our department with blurred
vision on both eyes, mild ocular pain, accompanied by metamorphopsia,
floaters, scotomas and photopsia. The anterior segment examination showed
small to medium size keratic precipitates, posterior synechiae, and iris
atrophy. Mild to moderate aqueous inflammation with cells and flair was
present in the anterior chamber. The fundus examination showed multiple small
yellow-white spots, round-shaped changes located at the level of the retinal
pigment epithelium and choriocapillaris. According to the fluorescein
angiography the active lesions exhibited blockage of the early choroidal
fluorescence followed by late staining. The old inactive lesions corresponded
to the retinal pigment epithelium windows defects. The laboratory examination
showed high level of blood glucose, C reactive protein, cholesterol HDL, LDL,
triglycerides. According to the immunological examination the C3 component of
complement was lower (0.630), as well as the C4 component of complement
(0.158), and the immunological complex in blood was elevated (171). ELIZA
test on viral infection showed Citomegalo viruses IgG positive, Herpes
Simplex Virus IgG positive, Varichela Zoster Virus IgG positive. The results
of human leucocyte antigen typization were human leucocyte antigen A1:A2,
human leucocyte antigen A2:A24(9), human leucocyte antigen B1:B44(12), human
leucocyte antigen B2:B60(40), human leucocyte antigen C1:Cw3, human leucocyte
antigen C2:Cw5. The radiological examination of lungs, the Mantoux test,
Treponemal serology, Toxocara and Toxoplasma serology, magnetic resonance of
endocranium and orbit were also performed. The multiple viral infection,
which was detected in our patient with immunological abnormalities pointed to
an underlying autoimmune mechanism, possibly triggered by an infectious
agent, a virus.
Conditions for strong Morita equivalence of partially ordered semigroups
Authors: Tart Lauri
Published: June 2011

We investigate when a partially ordered semigroup (with various types of local units) is strongly Morita equivalent to a posemigroup from a given class of partially ordered semigroups. Necessary and sufficient conditions for such equivalence are obtained for a series of well-known classes of posemigroups. A number of sufficient conditions for several classes of naturally ordered posemigroups are also provided.
Erratum to: “Degradation of coatings based on 310S steel doped with Al and Ir additives by the scratch test” by Barbara Kucharska
Authors: Kucharska Barbara
Published: June 2011

The original version of the article was published in Central European Journal of Physics 9, 1122–1130 (2011), DOI: 10.2478/s11534-011-0005-8. Unfortunately, the original version of this article contains a mistake in Tab. 2. Here we display the corrected version of this table.