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Publikacije (35675)

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D. Bećirović, Admir Čavalić, Benjamin Nurkić

In the Federation of Bosnia and Herzegovina, through the Law on Internal Trade, it is planned to restrict work on Sundays for most sales facilities. This would apply to the territory of the entity concerned, i.e., 51% of Bosnia and Herzegovina’s territory. Previously, unlike other countries that introduced the same or similar practices, there have been no significant social and political discussions or surveys of the views of workers, employers, and citizens. This paper aims to research the citizens' views of the Federation of Bosnia and Herzegovina on non-working Sundays and thus offer a basis for a better discussion of this issue. A convenience sample of 406 respondents from the Federation of Bosnia and Herzegovina (FB&H) entity was used. Despite the expressed bias on the topic of banning trade on Sundays, the analysis of respondents’ answers regarding the willingness to work on Sundays (with the condition of a second day off some other day and 50% higher wages for working on Sundays) showed that more than half of the respondents support working on Sundays under this condition. The survey results showed that citizens are less inclined to restrict the operation of smaller shops and that the ban on working on Sundays is mainly supported by those who do not work on Sundays.

S. Herenda, Merima Begović, E. Hasković, V. Asanović

<p style="text-align: justify;">Shape memory alloys are of great commercial importance from biomedical applications to smart materials. The electrochemical behavior of Cu-Al-Zn alloy in phosphate buffer without and in the presence of amino acid was investigated. Electrochemical researches were performed in a traditional three-electrode system by means of the Tafel extrapolation method. The results showed that the presence of amino acid leads to a decrease in the corrosion rate and the density (values) of the corrosion current, which indicates that the tested inhibitor is efficient.</p>

The aim of this paper is to compare two geodetic methods - GNSS and aerial photogrammetry in the context of calculating the volumes of mineral resources in open-pit mines. The advantages and weaknesses of both methods are analyzed, as well as their impact on accuracy, efficiency, and costs. The results show that the GNSS method provides high accuracy on simpler and flatter terrains but demonstrates weaknesses on more complex terrains due to the approximation of the actual surface using breakpoints obtained by the GNSS method. The aerial photogrammetry method enables fast and efficient data collection and provides a detailed 3D model, making it particularly useful in hard-to-access or hazardous areas. Additionally, it significantly saves time during data collection and reduces the demand for geodetic professionals. The paper also compares volume calculation methods, emphasizing how technological advancements allow many software solutions to treat the 3D model of the subject area as a whole rather than as segments such as profiles, prisms, etc.

Introduction: The main aim of this research was to determine whether there are statistically significant correlations between TMG variables and jumping performance. Materials and Methods: Twenty-five healthy and physically active male students (age: 20.84 ± 0.99 years; body height: 179.46 ± 5.91 cm; body weight: 73.88 ± 6.43 kg) of the Faculty of Sport and Physical Education participated in this study. Radial displacement, contraction time and delay time of the m. vastus lateralis were collected to assess muscles’ contractile characteristics using tensiomyography (TMG). Additionally, squat jump and countermovement jump height were recorded using the Optojump system. Results: A very high, negative, statistically significant correlation between both power assessment variables and the radial displacement variable was found; more specifically, the cor-relation between CMJ and radial displacement amounted to r = -.80, p < .01, while for SJ and radial displacement the correlation amounted to r = -.73, p < .01. High, negative, statistically significant correlations (r = -.61 to -.69, p < .01) were achieved among all other variables. Conclusion: TMG parameters could successfully predict jumping performance in the studied sample of male students.

Drago Župarić, Seada Brkan

This paper on the lectisternium provides a detailed explanation of this ancient Roman ritual in its role as a key element in the religious and social practices of the Romans. The lectisternium was a ceremony in which the Romans prepared meals for their gods on specially arranged couches, creating the illusion of a divine presence at their feast. This ritual had a profound religious and social dimension, especially during times of crisis such as epidemics and wars, when the Romans prayed to their deities for mercy and protection. The ritual also promoted unity and solidarity among citizens, who opened the doors of their homes and temporarily set aside disagreements, thus bringing a conciliatory character to the ritual. Over time, as social and religious norms changed, the lectisternium gradually lost its significance, and was replaced with new rituals coinciding with the introduction of Christianity. The paper thus provides insight into the importance of this ritual in the context of Roman social and religious life, highlighting its role in shaping Roman social and religious structures.

In this paper, we present the main features of Dynamic Rapidly-exploring Generalized Bur Tree (DRGBT) algorithm, a sampling-based planner for dynamic environments. We provide a detailed time analysis and appropriate scheduling to facilitate a real-time operation. To this end, an extensive analysis is conducted to identify the time-critical routines and their dependence on the number of obstacles. Furthermore, information about the distance to obstacles is used to compute a structure called dynamic expanded bubble of free configuration space, which is then utilized to establish sufficient conditions for a guaranteed safe motion of the robot while satisfying all kinematic constraints. An extensive randomized simulation trial is conducted to compare the proposed algorithm to a competing state-of-the-art method. Finally, an experimental study on a real robot is carried out covering a variety of scenarios including those with human presence. The results show the effectiveness and feasibility of real-time execution of the proposed motion planning algorithm within a typical sensor-based arrangement, using cheap hardware and sequential architecture, without the necessity for GPUs or heavy parallelization.

<p style="text-align: justify;">In this article we present the original Georgi-Glashow &nbsp;model with gauge and fermion sector derivation in order to show grand unified theory (GUT) through this model, but also to correlate &nbsp;and Standard Model (SM). One of the correlations reside in neutrino mass sector where both and Standard Model (SM) see neutrinos as massless particles. We will show that gauge sector yields twelve gauge bosons that will mediate proton decay within <i>.</i> Beside this, Georgi-Glashow model provides a basis for development and extrapolation in terms of reconstructing it to find viable neutrino mass mechanism that we present in our conclusion.</p>

Ognjen Stojkić, Radislav Filipović, Mladen Jankovic, Duško Kostić, M. Perušić, S. Stopić, Vladimir Damjanović

<p>Zeolite 13X is one of the best adsorbents among zeolites and one of the most commercially available zeolites.&nbsp; This paper investigates the influence of several process parameters on the properties of 13X zeolite, including crystallization temperature, crystallization duration and Si/Al molar ratio in the starting reaction mixture. The quality of the obtained powders was examined in detail through a series of analytical and instrumental methods, presented in the paper. Water and CO<sub>2</sub> adsorption capacities were determined as key quality parameters of 13X zeolite, and additional characterization was performed by determining material granulometry, specific surface area (BET analysis), crystallinity (X-ray diffraction method) as well and SEM analysis. The obtained results indicate a clear dependence between the examined process parameters of the system and the characteristics of the synthesized materials, thus enabling the selection of optimal conditions for the synthesis of 13X zeolite.</p>

N. Hadžiomerović, Fuad Babović, Anel Vejzović, Aida Bešić, Elvir Čičkušić, Nejra Dučić, M. Kati̇ca

Multiple studies have shown the importance of adequate nutrition for animals and humans and its effect on overall health. Therefore, the aim of this study was to investigate the effects of different nutritional regimes on the intestinal health of rats by evaluating different morphological and morphometric characteristics of small intestines, with the emphasis on the villus height:crypt depth ratio (V:C). For the experimental study, 24 clinically healthy adult Wistar rats were used. The rats were randomly divided into 3 groups: the control group (group A) was fed with conventional food, the second group (group B) with bakery products, and the third group (group C) with meat products. Samples of the duodenum and jejunum were collected for detailed morphological and morphometric analysis. A significant increase in the duodenal villi height was reported in group B (661.59 µm) and C (602.83 µm) compared to the control group (475.34 µm). The crypt depth values in the jejunum were significantly higher in group B (191.41µm) and C (246.23 µm) compared with the control (145.14 µm). The jejunal V:C ratio was significantly lower in groups B and C. The study showed significant morphological changes in the intestinal parameters in rats fed predominantly with meat and bakery products. These findings could be applicable in both veterinary and human medicine, underlining the significance of consumed food on gut health.

Miran Merhar, Aldin Bjelić, Atif Hodžić

For efficient production planning, it is necessary to know the power consumption of a particular woodworking operation in advance. In the past, many power measurement tests have been carried out based on a large number of different combinations of technological parameters. However, in this paper, the effects of technological parameters and wood properties on the power magnitude of peripheral milling are analysed using experimental design methods, where the effects of the different factors can be tested with a much smaller number of combinations. Therefore, a central composite experimental design was used to plan the experiments. Three different tree species with different densities were milled with three different numbers of cutting knives and three depths of cut at constant feeding speed and rotational velocity. For each milling combination, the power was measured continuously and then the average power was calculated. Based on the measurements, a suitable model was determined that allowed the magnitude of the cutting power to be determined for each combination of technological parameters and wood species tested. The model proved to be suitable, as the deviations between the measured and modelled power values are minimal.

Suada Hasanovic-Vuckovic, Lejla Milisic, L. Dervišević, I. Hasanbegovic, Zurifa Ajanović, A. Skopljak-Beganović, Aida Sarac-Hadzihalilovic

Introduction. Magnetic resonance imaging (MRI) is the preferred method for diagnosing the causes of lumboischialgia, as it offers the highest sensitivity and specificity compared to other imaging techniques. In clinical practice, there is often a notable discrepancy between patients’ clinical symptoms and the radiological findings. While there are various clinical tests for lumboischialgia, the Oswestry Disability Index (ODI) and the Visual Analogue Score (VAS) are the most commonly used and reliable. This article aims to explore the correlation between patients’ subjective pain experiences and their level of disability due to lumboischialgia and disc herniation as detected by MRI. Methods. In this prospective clinical study, a total of 100 patients of both genders, aged 18 to 65 years, were included. These patients were referred for magnetic resonance imaging of the lumbar spine due to complaints of lumboischialgia. MRI of the lumbar spine was performed, and the extent of degenerative changes was evaluated. Participants completed a questionnaire regarding their subjective pain experience and functional status, and the Oswestry Disability Index (ODI) and Visual Analogue Score (VAS) were calculated. Results. The statistical analysis revealed a significant correlation between the severity of disc herniation (classification) and the intensity of spinal pain (p = 0.010), as well as with the disability index (p = 0.003). Conclusion. A statistically significant relationship was confirmed between the levels of pain and disability and the degree of intervertebral disc herniation observed on MRI images of the lumbar spine. Keywords: lumbal disk herniation, lumboischialgia, pain.

Azra Rašić, E. Sokolović, Lejla Alidzanovic Nurkanovic, Inga Marijanovic, Alma Mekic-Abazovic, S. Bešlija

Hepatocellular carcinoma (HCC) is the sixth most common cancer globally and the third leading cause of cancer-related deaths. It remains especially lethal among patients with cirrhosis and chronic liver diseases like hepatitis B and C, alcohol abuse and non-alcoholic fatty liver disease. A retrospective, multicenter study was conducted across five oncology centers in the Federation of Bosnia and Herzegovina, with the aim of gaining a better insight into the current state of healthcare for patients with HCC in this region. The study reveals several regional disparities in the etiology, treatment, and outcomes of HCC, but it also indicates that the diagnostic approach varies significantly from one city to another. One of the highlights of the study is the late-stage diagnosis of most patients, due to the limited healthcare access, diagnostic delays and, especially, lack of screening programs. Implementation of targeted screening methods, regular monitoring of high-risk patients and enhanced use of biomarkers could lead to a significant improvement in the diagnostic accuracy. The limited use of innovative treatments recommended by the global guidelines was also identified as an issue, which directly leads to limited surgical and other treatment options. This study signals the need for a standardized patient pathway in the Federation of Bosnia and Herzegovina, implementation of national registry and targeted HCC database, which could reduce mortality, improve overall care and patient outcomes. Keywords: hepatocellular carcinoma, healthcare, standardized patient pathway.

M. Ostojić, T. Kovacevic-Preradovic, B. Stanetic, Dusko Vulic, V. Djajic, Milovan Bojic

Medical professionals have a responsibility to inform the public about contemporary research on alcohol consumption. Earlier health recommendations focused primarily on the link between alcohol and cardiovascular diseases. Over time, these guidelines have expanded to consider the broader impact of alcohol on all-cause morbidity and mortality. Unlike the tobacco industry, which remains profitable but faces strict regulations on marketing and lobbying, the alcohol industry benefits from fewer regulations. This allows alcohol manufacturers to freely promote their products and influence both federal and state policies. Clear emphasis on the importance of ceasing alcohol consumption is crucial, particularly in primary and secondary prevention efforts. Keywords: cardiovascular diseases, alcoholics, prevention.

Nejra Mlačo-Vražalić, Alen Omanović, Amela Dinar-Mostic, Šejla Cerić, A. Sofić, A. Mlačo

Introduction. Morning stiffness (MS) is the hallmark of rheumatoid arthritis (RA) and it has important implications on daily life of the patients. There are conflicting reports of its association with disease activity. Methods. This observational study included 125 patients with seropositive RA from Health Care Center, Visoko. We obtained data on patient’s gender and age, duration of RA, pain in hands and feet, MS and its duration, hospital admission, blood pressure, laboratory values and treatment modalities. Results. MS lasted up to 30 minutes in 71 (56.8%) patients, 30 to 60 minutes in 40 (32%) patients, and more than 60 minutes in 14 (11.2%) patients. There was no difference in the duration of MS between genders. Patients with longer MS were younger and had a longer duration of illness. Patients with MS longer than 30 minutes had higher blood pressure and cholesterol levels. ESR in the second hour and CRP correlated with a duration of MS. Patients on methotrexate had a longer duration of MS. No significant differences in the duration of MS were observed for leflunomide, corticosteroids and supportive treatment modalities. Conclusion. Duration of MS correlates with RA disease activity and remains an important burden for patients. Usage of newer treatment options, such as biologic disease-modifying antirheumatic drugs (DMARDs), may be required. Keywords: biomarkers, disease activity, rheumatoid arthritis.

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