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Branislava Drašković, S. Petronic, M. Gutalj, Nataša Marić

Two databases related to grassland in Bosnia and Herzegovina (B&H) have been used in this research-the Copernicus Grassland (GRA) and CORINE Land Cover (CLC). The data have been processed by using GIS tools, and the spatial distribution of grass vegetation in relation to three biogeographical and four elevation zones has been determined. By using the Copernicus Water and Wetness (WaW) database, an insight into the coverage of grass vegetation in wetlands has been obtained. In addition, the analysis of changes in databases determined the total amount and location of the largest grassland losses. Based on GRA database, B&H is one of the richest countries, with 22.4% of its territory covered by grassland. According to the CLC database, pastures occupy 6.3% and natural grasslands 5.6% of the territory of B&H. However, grassland is exposed to various anthropogenic and natural processes that affect its distribution, quality, functions, etc. The CLC database has been processed by extracting the grasslands (pastures and natural grasslands) and calculating their spatial coverage and changes which happened during the three six-year periods from 2000 to 2018. The trend of decreasing pasture areas and increasing natural grasslands has been noticed. The pastures are most endangered by the processes of conversion to other types of agricultural land, while natural grassland increased spatial coverage during the period 2012-2018 mostly due to the revitalization and grazing of burned areas in the region of Herzegovina. Grasslands have been particularly targeted for afforestation and cropland conversion at present.

Cancer is an abnormal proliferation of cells that is characterized by the presence of genomic alterations including DNA mutations, deletions, insertions, translocations, inversions, and others. KRAS gene is one of the most mutated genes across different cancer types. The most common mutations in KRAS are found in codons 12 and 13 of KRAS protein, which are associated with a lack of response to anti- epidermal growth factor receptor (EGFR) antibody therapy. This study assessed and compared the performance between two diagnostic methods: droplet digital PCR (ddPCR) and next generation sequencing (NGS). The main goal was to determine KRAS G12 / G13 mutant allele fraction using NGS and to compare the accuracy toddPCR. A total of 28 samples of non – small cell lung cancer (NSCLC) and colorectal cancer (CRC) were analyzed using ddPCR and NGS methods. Our results show that even though both methods exhibited high rate of concordance and correlation, the study proved that ddPCR is more superior when it comes to detecting low frequency mutations. Even though strong correlation was observed, based on the values obtained, we concluded that ddPCR is more accurate, reliable, and sensitive in comparison with NGS.

I. Lazović, Valentina Turanjanin, Biljana Vucicevic, M. Jovanović, R. Jovanović

Greenhouse gases emission as well as total energy consumption in buildings of public importance, such as schools, municipal buildings, health care centers, can be significantly reduced by increasing buildings? energy efficiency. Buildings? energy consumption adds up to 37% of total energy consumption in the European Union countries. In the Republic of Serbia this amount is significantly higher, about 50%. School buildings are considered as one of the most diverse structures from the point of energy-efficient design and construction. The main aim of this paper is to determine the most appropriate settings for possible improvements in energy efficiency and temperature comfort inside a typical primary school classroom in Serbia. The energy efficiency analysis was performed during the heating season for the naturally ventilated primary school classroom located in the Eastern Serbia region. The analysis was performed using novel computational fluid dynamics model, suggested in this paper. The suggested model was used to solve two hypothetical scenarios. The first scenario simulates the temperature field in classroom with current energy characteristic envelope of the school building. The calculated numerical data from the first scenario were compared with in-situ measurements values of temperature and wall heat fluxes and showed satisfying accuracy. The second scenario was simulated to indicate possible improvements, which would allow energy consumption decrease and thermal quality enhancement. The analyzed results, calculated using the suggested numerical model under the second scenario conditions, showed that using appropriate set of measures, it is possible to obtain desired temperature comfort levels without need for increase in the building energy consumption.

N. Hodžić, Kenan Kadić, A. Kazagić

The energy transition basically implies a phased and significant reduction in the use of fossil fuels, until the final cessation of use in the near future. Renewable energy sources and alternative fuels are an increasingly important part of the energy transition. At the same time, it is necessary that energy systems increase energy efficiency and environmental acceptability. In this regard, great efforts are being made to expand the portfolio of primary fuels in existing large energy systems, e.g. thermal power plants. Therefore, today in large boilers, in order to reduce NOx emission, staged air supply for combustion is inevitably used as the primary measure in the furnace (air staging). In addition to the previous measure, there are many examples of staged fuel supply to the combustion zone (fuel staging), and still a small number of examples of the use of third or additional fuel, e.g. application of biogas or natural gas in combustion of pulverized solid fuels (reburning technology). General, these measures simultaneously increase the efficiency of primary energy conversion from fuel and reduce the emission of undesirable components into the environment. The results of this paper show the extent to which the effects of the use of natural gas in the co-firing of Bosnian coal and waste wood biomass are expressed. In this process there is an additional reduction of NOx in proportion to the share of gas - at a process temperature of 1350 °C and at 10% of the energy content of gas in combustion with coal, compared to emissions without additional fuel, recorded reduction of NOx emissions by more than 250 mg/mn 3.

L. Mićić, Homayoun Khamooshi, Lazar Raković, P. Matković

There have been a significant number of publications about digital workplace transformation. This is due to technological developments in the last decades as well as the COVID-19 pandemic. However, there is no adequate overall definition of the term. This leads to misunderstandings and confused interpretation of the digital workplace, sometimes even narrowing it down to a set of tools or a platform. Given the complexity of digital workplace transformation, there is a need to have an integrated prospective and analyze it not just from a technological perspective, but from an organizational and processes point of view as well. Therefore, this paper is an attempt to review the concept and offer a comprehensive definition of the digital workplace. This includes all the important aspects of the transformation including tools and platforms as well as personal issues, organization, processes and management. The paper provides a systematic literature review of the publications in leading bibliographic and citation bases, starting from Web of Science and Scopus to SpringerLink, IEEE Xplore and Association for Information Systems eLibrary. The review includes not only journal papers, but also leading proceedings, books and other referent publications. It addresses the authors' approaches, perspectives, terminologies, focusses and understanding of workplace transformation over the last decade by a comprehensive review of the state of art of the literature in the field of digital workplace. Finally, a set of recommendations are made to further research in increasingly important subject of digital workplace transformation.

N. Djordjevic, M. Vlahović, S. Mihajlović, S. Martinović, Nenad M. Vušović, Jasmina Lozanović-Šajić

During mechanical activation, qualitative changes that can produce various phenomena occur in the material. In this study, anhydrous sodium carbonate was mechanically activated for 2, 7, 14, and 28 minutes in a vibro mill at a frequency of 3000 oscillations per minute. After activation, four series of activated samples were stored in the air at room conditions for 31 days (relaxation period). To monitor the kinetics of the transformation process of activated sodium carbonate samples, i.e. the mechanism of sodium bicarbonate formation during relaxation, Fourier-transform infrared (FTIR) spectroscopy analysis was used. FTIR testing was performed as a function of relaxation time for all four series of samples, with characteristic groups observed: CO32-, HCO3- and OH-. The obtained results provided kinetics parameters for the transformation of sodium carbonate into sodium bicarbonate due to the chemisorption of moisture and carbon dioxide from the atmosphere.

A. Baraković, Mahira Jahić, A. Cerovac, A. Hadžimehmedović

Background: Vaginal microflora plays an important role in cervical carcinogenesis. An increase in vaginal pH is associated with the severity of squamous intraepithelial lesion (SIL) and a decrease in the number of lactobacilli. Microbial dysbiosis contributes to the damage of the epithelial barrier, as well as the reprogramming of immune and metabolic signaling. Dysbiotic bacteria cause damage to the epithelial barrier, immune dysregulation and genotoxicity and create a tumor-permissive microenvironment. Objective: The aim of this study was to determine the presence of risk factors (abnormal colposcopic and microbiological status, elevated pH of the vaginal environment) in regular Pap tests and LSIL. Methods: Retrospective prospective study 2021-2022. 90 women with pap smears were analyzed: 40 with LSIL at the Gynecological Center “Dr. Mahira Jahić” Tuzla and 50 with normal findings at the Tesanj Health Center. General data such as: age of the subjects, reproductive status, contraception, smoking and data on colposcopic examination, microbiological findings and vaginal pH value were analyzed. Statistical data processing was done in the SPSS program. Results: The average age of the test subjects is 39.94, in normal Pap 41.20 years, and in LSIL 38.38 years. The vital characteristics of the subjects did not differ significantly, except for smoking, where in LSIL findings, they consumed cigarettes significantly more often. Abnormal colposcopic examination were found in 85% (N-34) of women with LSIL. In subjects with LSIL, a positive microbiological test for enterobacteria was found in 47.5% (N-19) and a normal pap test in 12% (N-6). Statistically significant difference p=0.00523 p<0.05, E faecalis and E coli had the highest prevalence in LSIL. The mean pH value of the vaginal environment in LSIL is 5.38, and 4.96 in a regular pap test. Subjects with LSIL in 10% (N-4) had a normal pH test, and 48% (N-24) had a normal Pap test. P=0.00129 p < (0.05). A normal pH value was significantly more common in subjects with a normal Pap test. Microbiological flora, especially enterogenic bacteria, are more common in LSIL than in women with a regular pap test. Conclusion: when monitoring women with LSIL, special attention should be paid to the elimination of present enterobacteria (E.faecalis and E.coli) as a possible risk factor in the development of precancerous lesions (SIL) and cervical cancer.

S. Murtić, Jasmin Fazlić, Amina Šerbo, M. Valjevac, Imran Muharemović, Fahrudin Topčić

The aim of this study was to compare the yield and fruit quality characteristics of raspberry (Rubus idaeus L.) cultivar ʽMeeker' grown in organic and conventional cultivation systems. The total soluble solids, titratable acidity, ascorbic acid content, total phenolic and flavonoid contents and total antioxidant capacity of raspberry fruits were assessed. The analyses showed that raspberry yields per cane were significantly higher in the conventional cultivation system. In contrast, fruits from organic farming had higher antioxidant levels. The findings of this study indicated that organic farming in the study region increased raspberry quality, but decreased yield, as compared to conventional farming.

Da Li, Profitabilnost Banaka, NA Utiče, Privredni Rast, Primeri Banaka Pojedinih, Zemalja Zapadnog Balkana, Almir Alihodžić

Non-performing loans are loans that do not generate income for banks and represent one of the most sensitive categories of a bank’s balance sheet. Their increase can affect both the liquidity and the solvency of banks. This paper investigates internal (specific) and external (macroeconomic) determinants of non-performing loans of the banking sector in Bosnia and Herzegovina for the period 2008: Q1 - 2020: Q4 including correlation and regression analysis. The results of the research showed that the following independent variables have the strongest impact on non-performing loans as a dependent variable: unemployment rate, provisions to non-performing loans, and real GDP growth rate. On the other hand, the independent variable return on equity had the weakest impact on non-performing loans.

Banks play an important role in a country's economy because increasing savings and capital accumulation has a positive effect on economic growth and employment through the banks' resource transfer function. The purpose of this study is to establish a cause-and-effect relationship between bank profitability and economic growth in three selected countries, including Bosnia and Herzegovina, Serbia, and Croatia. In this research, a panel causality test is applied to examine the cause-and-effect relationship for the time period from the first quarter of 2008 to the fourth quarter of 2020. Empirical findings in this study showed that the profitability of banks in selected developing countries (Bosnia and Herzegovina, Serbia and Croatia) has a positive effect on economic growth. Also, this research provides insight into in-depth analysis in terms of considering several countries through the use of a panel causality test, for the purpose of studying the relationship between bank profitability and economic growth.

Maja Mrkić, Violeta Ilić-Todorović, Jasmina Jovanović-Mirković, D. Radosavljevic, M. Despotović, H. Aleksopulos

Health care is the most important activity and human kind is dealing with its organization for centuries. Public health policies and functional health care systems have as their primary objectives the preservation and improvement of public health. Problems of intensive aging of the population, continuous growth of health spending, ensuring sustainable financing of health systems and efficient use of resources are present in all world health systems. Health care system reforms have become a global phenomenon for the last twenty years of the last century. The goal of this review paper is to point out the importance and need for timely modifications of the strategy of the health care optimization plan in Serbia by 2035, so that the health care system of Serbia would be ready to respond to potential global health crises in the future. The Plan for optimizing the health care institutions network by 2035 as a key document of the Master Plan will be briefly presented with an analysis of key parameters of health care effectiveness and above all improvement of the implementation of basic principles of health care - uniformity and availability of health services on the territory of Republic of Serbia. In order to present future key changes in the health system, it is necessary to take into account the current situation, as well as the potential consequences of the global pandemic of COVID-19 virus on health systems. Databases were used for analysis: WHO, OECD, World Bank Reports. The tendency of increasing the share of health care costs in GDP, with the problems of efficient use of health care resources, is becoming the most important reason for reforming health insurance and health care in almost all countries in the world. Numerous researches of eminent experts in the field of economy and finance indicate that the introduction of compulsory health insurance with a clearly defined package of health conditions is the most rational choice in the implementation of the World Health Organization project: "Health for all in the 21st century". A health system could be said to be effective if it provides health care of maximum quality in terms of medical outcome, with minimal costs in relation to the allocated funds. Health care systems around the world today face very similar problems, and the COVID-19 pandemic has shown how "vulnerable" it is not only the health system but all of humanity when faced with such challenges.

Bojan Veljković, Jelena Aleksandrić, M. Despotović, I. Milojević, Marija Mladenović, Christos Alexopoulos

. Healthcare professionals have a key role to play in the introduction, application and use of technology in clinical practice. The lack of technical expertise and technological understanding poses a challenge to the quality of health services and probably to the safety, dignity and quality of life of patients. Experience so far speaks of computer literacy, which is the basis of the implementation of the health information system and varies according to gender, age and years of work experience. Determine whether computer literacy depends on gender, age, and years of service. The research was conducted according to the type of cross-sectional study, in the population of health workers employed at the Health Center in Jagodina and the General Hospital in Ćuprija. Yesterday’ s sample consisted of 142 respondents. A structured questionnaire was used for data collection, statistical data processing was performed with the computer support of the statistical package for social sciences IBM SPSS Statistics, Version 23 (Statistical Package for Social Sciences). Analysis of variance was used from statistical tests. Results. Sample composed of 78.2% of respondents and 27.2% of respondents; in both groups of respondents, the average achievement on the literacy scale is around 17 points. Age 40 and over is 59%; the first two groups (less than 30 years of age and 30 to 39 years of age) are statistically significantly different from the oldest groups of respondents (F = 4.949, p = 0.003, df = 3). The largest percentage of respondents have a work experience of 10-29 years; younger respondents have more knowledge of computers (F = 7.239, p = 0.000, df = 3). Computer literacy depends on age and years of service.

Gorica Vuksanović, J. Marić, Olivera Kalajdžić, Ivana Zečević, Sandra Matović, S. Ristić

Cancer-related cognitive dysfunction is an important clinical problem that can interfere with the daily functioning, work productivity, childcare, and other responsibilities of women with a history of breast cancer. Risks of cancer-related cognitive impairment include cancer and cancer treatment, as well as patient-related vulnerabilities. There is no established standard of neuroprotective care or treatment for breast cancer-related cognitive impairment.

M. Jovović, V. Prodanović, Aleksandra Govedarica-Lučić, Z. Malešević

This study was undertaken to determine the effects of humic acid on the growth seedling of two tomato cultivars CeylandoF1 and RallyF1, under greenhouse conditions. Treatment with „Humistar“ was started in the two-leaf stage of the plant. One level of humic acid of 20 ml l-1 was applied to the seedling growing media and each seedling of the species was treated every ten days until transplanting directly into the soil in greenhouse.The higest growth rate: leaf (weight), stem (diameter and weight) and root (weight and lenght) growth were optained in cultivar RallyF1 as compared to the control and leaf, stem and root weight compared to Ceylando F1 cultivar.General, the results showed that humic acid influenced better root development in both examined tomato cultivars.

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