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Objectives: Improved serological detection of specific antibodies against SARS-CoV-2 could help estimate the true number of infections. Methods: A total of 443 serum samples provided by unvaccinated patients of all ages with unknown COVID-19 status that were originally submitted for routine screening or clinical management from outpatient laboratory during the March–April 2021 (third wave) were collected. Seroprevalence of IgM/IgG antibodies was determined by lateral flow immunoassay (Tigsun, Beijing, China). Results: Among 443 serum samples, 186 (42.0%) were positive (incidence of 5.2/1000) with slight predominace of females, 104 (55.9%), highest seropositivity in 25–50 and 51–64 years age groups, 61 (32.8%) and 57 (30.6%), respectively (P < 0.05); rural population was more prevalent, 101 (54.3%) (P < 0.05) and active workers, 86 (41.1%). Almost equal number of patients was with or without symptoms, 48.4% and 51.6%, respectively. For the comparison, in the same period it was registered 296 (out of 855; 34.6%) PCR SARS-CoV-19 positive persons (incidence of 8.2/1000) with the higher gender (females) and the highest age prevalence in 51–64 years age group (36.8%). In the period March 2020–June 2021, it was registered 804 (out of 3323; 24.2%) (incidence of 22.3/1000) PCR SARS-CoV-19 positive persons with no significant gender and significant age difference (25–50 and 51–64 years group, respectively). Conclusion: In the regions with high prevalence/incidence of SARS-CoV-2 in the general population (Bosnia and Herzegovina is on the World top on the number of deaths) seroprevalence measuring can help tracking the spread of disease.

Purpose: The current study is theoretically grounded in the Technology Acceptance Model (TAM) and Social Influence Theory. It attempts to explain how acts of others influence attitudes and behaviors of individuals in the context of the adoption of cloud computing services. Methodology: The present study used the convenience sampling technique to conduct empirical research. Data collection was performed via an online survey. We used Partial Least Squares Structural Equation Modelling (PLS-SEM) to test the proposed research model. Results: Our findings suggest that a favorable social norm towards cloud computing services produces a positive and statistically significant effect on perceived ease of use, perceived usefulness, and willingness to use cloud computing services. In terms of mediating the role of perceived ease of use and perceived usefulness, findings revealed that perceived ease of use mediates the relationship between social norms and willingness to use cloud computing services. Conclusion: The present study advances our understanding of the role of social influence and individual perceptions of technology (i.e., usefulness and ease of use) in the intention to use technology in the cloud computing context.

Objective. Diabetes mellitus and arterial hypertension are chronic, mass non-communicable diseases that are global health problems with characteristics of epidemiology where complications of these diseases are the common reason for visual handicap and disability in the work productive population. The primary aim of this paper was to analyze the frequency of visual dysfunction, and behavioral habits in diabetic and hypertensive patients and the second aim was to analyze the occurrence of work disability in patients with these diseases. Methods. The research is a cross-sectional study made in two Health Centers in the City of Eastern Sarajevo in a period of July 2018 to July 2019 (12 months). 192 patients with diabetes and 100 patients with hypertension were selected using the random sampling method. A special questionnaire was created for this purpose, and statistic analysis was made by SPSS (IBM, Chicago version 19). Statistical significance was tested with ch2 test. Results. Diabetic patients significantly have more visual disturbances than hypertensive patients according to subjective assessment (ch2=14.21, p< 0.001). Worsening of visual acuity is presented more in diabetic than in hypertensive patients (ch2=6.17, p<0.001). There is no significant difference in behavioral habits between diabetic and hypertensive patients for smoking (ch2=1.778, p=0.411) and alcohol consumption.( ch2=2.158, p=0.142). Patients with diabetes are more frequent in the status of work disability than those with hypertension (ch2=13,46, p<0,001). Conclusion. Mass non-communicable diseases are a common cause of visual dysfunction. Diabetes mellitus is the main reason for visual disability in the adult population from the region of Eastern Sarajevo. Behavioral habits like smoking and alcohol consumption have a serious impact on the prognosis of those patients.

Background: Pretreatment differentiation between glioblastoma and metastasis is a frequently encountered dilemma in neurosurgical practice. Distinction is required for precise planning of resection or radiotherapy, and also for defining further diagnostic procedures. Morphology and spectroscopy imaging features are not specific and frequently overlap. This limitation of magnetic resonance imaging and magnetic resonance spectroscopy was the reason to initiate this study. The aim of the present study was to determine whether the dataset of diffusion tensor imaging metrics contains information which may be used for the distinction between primary and secondary intra-axial neoplasms. Methods: Two diffusion tensor imaging parameters were measured in 81 patients with an expansive, ring-enhancing, intra-axial lesion on standard magnetic resonance imaging (1.5 T system). All tumors were histologically verified glioblastoma or secondary deposit. For qualitative analysis, two regions of interest were defined: intratumoral and immediate peritumoral region (locations 1 and 2, respectively). Fractional anisotropy and mean difusivity values of both groups were compared. Additional test was performed to determine if there was a significant difference in mean values between two locations. Results: A statistically significant difference was found in fractional anisotropy values among two locations, with decreasing values in the direction of neoplastic infiltration, although such difference was not observed in fractional anisotropy values in the group with secondary tumors. Mean difusivity values did not appear helpful in differentiation between these two entities. In both groups there was no significant difference in mean difusivity values, neither in intratumoral nor in peritumoral location. Conclusion: The results of our study justify associating the diffusion tensor imaging technique to conventional morphologic magnetic resonance imaging as an additional diagnostic tool for the distinction between primary and secondary intra-axial lesions. Quantitative analysis of diffusion tensor imaging metric, in particular measurement of fractional anisotropy in peritumoral edema facilitates accurate diagnosis.

Background/Aim: Irritable bowel syndrome (IBS) belongs to the gastrointestinal disorders characterised by abdominal discomfort and pain, altered constipation, diarrhoea and stomach distension. The aim was to assess relationship between the selected genetic polymorphisms with IBS, their combined genotype effect as well as to assess a difference in the distribution of allele and genotype frequencies of selected loci between case and control group. Methods: This was a prospective study which included 29 participants, 20 individuals diagnosed with IBS based on Rome III criteria and 9 healthy individuals. The study analysed the selected genetic polymorphisms as possible risk factors for IBS according to the model of the case-control study. Genotyping was performed for FKBP5, DRD2 and DAT polymorphisms qualified as risk factors for IBS in previous researches. Results: The results revealed a significant association between DAT polymorphism with IBS, both, at the allelic level (p = 0.006) and genotype level (p = 0.031). Individuals with 434 allelic variant in the genotype have six time higher probability for developing IBS, in comparison to the individuals without this allelic variant. The statistical association between other analysed polymorphism and IBS was not reached. The analysis of combined effects of selected polymorphisms revealed no association with IBS, except FKBP5 and DAT which result was at the level of statistical significance (p = 0.05). Conclusion: Further analysis which would include DAT polymorphism with larger sample size, as well as other genes involved in dopamine neurotransmitter system would be of great interest to define closer conclusion of IBS aetiology.

Introduction. Assessment of the occupational risk of exposure to the new coronavirus of workers engaged in the COVID-19 Departments of the University Clinical Center of Republic of Srpska and the use of personal protective equipment was the aim of this research. Method. In the University Clinical Center of Republic of Srpska (UKC RS), in the COVID-19 Departments, a KAP study (Knowledge Attitudes Practice Study) was conducted among 102 employees of all educational profiles, using the questionnaire of the World Health Organization (WHO), which was adapted for this research. The survey was voluntary and anonymous with the informed approval consent of the respondent. Results. Out of 102 surveyed, 13 of them tested positive for SARSCoV-2. On average, 95.0% of respondents always wear PPE in the COVID-19 Departments of the UKC RS. Putting on/removing PPE and decontamination of contact surfaces have been always carried out by 88.2% of respondents. Out of 64 respondents who used PPE for aerosol generating procedures, 10 of them (15.6%) were positive for SARSCoV-2 and of the other 38 respondents who did not participate in such procedures, three of them (7.9%) were positive for SARS-CoV-2. Statistical data processing was done in the SPSS program package, version 20.0, with a significance level of difference of 5% (p=0.412). Conclusion. There was no significant difference between SARSCoV-2 positive and negative personnel regarding the use and change of PPE, hand hygiene and surface decontamination. The assessment of the occupational risk of exposure to SARS-CoV-2, in addition to the proper use of PPE, takes into account the local epidemiological situation, specific characteristics of the work environment and tasks, the hierarchy of controls and the level of adherence to preventive measures and infection control.

Background: Identifying risk factors for the occurrence of cardiovascular diseases (CVD) is the first step in developing a prevention strategy. Objective: The aim of the study is to investigate the presence of risk factors and assess the overall risk of developing cardiovascular disease. Methods:.This cross sectional and experimental study involved 203 respondents of both sexes from the working population group aged 40 to 65 years. Results: Hypertension was diagnosed in 154 (75,9%) respondents, hyperglycemia in 177 (87,19%) respondents, dyslipidemia in 182 (89,66%) respondents and Diabetes mellitus type 2 was diagnosed in 53 (26,1%) respondents. Excess body mass was observed in 84 (41,4%) respondents, while obesity was noted in 91 (44,8%) respondents, and smoking habit in 117 (57,6%) respondents. Analyzing the above data using Q3 risk assessment for cardiovascular disease occurrence, it was found that the overall Q3 risk was significantly higher in male respondents, 21,8 (12.4-30.6), while female respondents had a median value of 14,7 (14-22,5), with an apparent statistically significant difference of p=0,001. Conclusion: To establish a strategic prevention program to eliminate the existing risk factors can only be achieved through multidisciplinary planning and the involvement of a multidisciplinary team of experts that will help improve the lifestyle of the individual and the entire community. From this work, we can see that the Q3 risk tool is well suited for risk assessment because it incorporates multidisciplinary parameters, whereas lipid indices can only be useful in cardiovascular disease risk assessment by comparing all indices.

Sedentary lifestyle and physical inactivity are some of the leading risk factors for cardiovascular diseases and total mortality. The aim of this study was to examine the effects of dosed physical exercise on the nutritional status of recreational athletes. In this study, we included 50 respondents of both sexes between the ages of 18 and 55, who engage in recreational physical exercise, were included in the study. All subjects had their body mass and height measured before the start of exercise and after three months, based on which the body mass index (BMI), waist circumference, and body fat percentage were determined. The exercise was carried out according to the plan 3 times a week for 75 minutes and combined anaerobic training (45 minutes) and aerobic training (30 minutes). The average body weight of all subjects at the beginning of the study was 81.74 kg, while at the end it was 80.16 kg. The average body weight of men at the end of the study was 1.95 kg less than the initial value, while it was 0.71 kg less for women. There is a statistically significant difference in BMI, waist circumference and fat percentage in the total number of respondents at the beginning and at the end of the study. Regular physical activity and exercise have a positive effect on BMI, waist circumference and body fat percentage, showing the importance of exercise in the prevention of obesity and chronic non-communicable diseases.

The paper presents the distribution of grassland and forest vegetation in the Republika Srpska, zoning by natural regions and altitude zones and the changes that occurred in the period 2000-2018. The territory of Republika Srpska belongs to three large natural regions of different physical and geographical characteristics, with specific environmental factors that affect the distribution of vegetation. Altitude significantly affects the occurrence and types of vegetation, so a digital elevation model with a 25 m resolution was used for the analysis of vertical zonality, in order to process data on the distribution of grasslands and forests by altitude zones. Copernicus Grassland and Forest databases were used, for the period 2012-2018. Given climate change and increasing droughts, which indirectly affect the quantity and quality of vegetation, monitoring and managing grasslands and forests will be an important challenge for Republika Srpska. The results of the research show that the grassland according to the Copernicus Grassland database occupies 19.7%, and the forest vegetation according to the Copernicus Forest covers 60.1%, which is almost 80% of the territory of Republika Srpska. Grasslands are most widespread in the area of medium-high and high karst fields of eastern Herzegovina. There are more pastures in the lower altitude zones, while natural grasslands predominate in the higher zones. Forests predominate in the central mountain-valley region. Broad-leaved forests dominate at lower altitudes and coniferous forests at higher altitudes. The European program for monitoring the Earth's surface via satellite remote sensing is a new technology, so the results obtained for the territory of Republika Srpska can be considered a novelty, which is the most significant contribution of this paper.