This study focuses on the theoretical analysis of the application of modeling and mathematical, particularly linear programming, in managerial processes within the agro-industrial complex. The authors have dedicated themselves specifically to defining planning processes, classifying models, and organizing production structures, including vertical and horizontal structures. Despite the fact that the benefits of linear programming have been proven, it is still not widely accepted and applied in our region. The reasons for this can be found in the relative complexity of the process, both in creating logical and mathematical models, and in interpreting results. Although there are specialized software and add-ons such as Solver in MS Excel, they are still not accessible enough to a wider range of users in the agro-industrial sector. It is evident that there is a need for the development of new specialized software solutions with user-friendly interfaces, which would make them more accessible, primarily to advisors, and then to agricultural producers.

When solving real problems, and to make a quality decision, it is necessary to consider a great number of often complex parameters. For these reasons, the development of decision-making process modeling has seen significant growth in recent years, and multi-criteria optimization models have stood out among them as useful for solving complex and conflicting phenomena. Multi-criteria optimization models make it easier for decision-makers to find the optimal solution in situations where there are many different criteria, which can often conflict with each other. The choice of the appropriate method of exploitation of mineral deposits follows the consideration of the problem and the approach to further development, which is primarily the determination of the criteria that influence the choice of the optimal alternative.

In this study, pyrophyllite was used for the first time in the composition of protective refractory coatings together with supplementary waste resources. The proposed refractory coatings are applicable for metallic and non-metallic structures, with the option of using them to protect machinery components in the chemical industry, metallurgy, and mining. Given that pyrophyllite has a low hardness, the goal was to improve the coating's resistance to cavitation erosion by adding 20 wt.% of hard refractory materials, i.e., crushed and micronized waste bricks based on mullite and corundum, respectively. Previous studies have demonstrated that protective coatings using a pyrophyllite filler have refractory qualities but insufficient resistance to cavitation erosion. As a result, the composition of refractory coatings, the preparation techniques, and the coating manufacturing process were altered. This study presents a simple method for combining conventional coatings made of refractory fillers (primary resource: pyrophyllite) with waste materials (mullite brick and corundum brick) used as reinforcement in protective refractory coatings for metal and non-metal structural elements that are highly resistant to cavitation erosion.

Introduction: We are increasingly witnessing the self-initiated, uncontrolled stacking of incompatible anabolic substances in various cycles in the young Balkan Recreational Bodybuilding population group, increasingly frequent acts of violence in our country and the emergence of a neglected and very silent epidemic that is taking on an increasingly aggressive course of illness and psychological behavior. Black market anabolic steroids are associated with many generally health problems and uncontrolled aggression behavior by abusers. Young unsolicited recreate bodybuilding are also associated with generalized atherosclerosis and potential increased high risk for heart disease that can structural and functional damage the cardiovascular system during muscle mass steroid cycles. Besides high calorie intake, elevating serum blood lipid cholesterol levels LDL lowering HDL levels, elevating, systolic and diastolic blood pressure take a certain participation in cardiovascular risk and therefor need a development of certain cardiovascular protection strategies for this avoiding medical supervision anabolic steroids abuser group which are not yet appropriate established. The aim of the short study was to estimate Cardiovascular Protective Strategy Measures on lipid levels, and blood pressure status in a young recreational bodybuilder with different ethnic groups who Abuse Anabolic Steroids during controversial and different mass Cycles with and without taking Polyunsaturated Fatty Acids and Acetylsalicylic Acid (ASA) and Statins. Subjects and methods: This study was conducted from beginning of January, 2022 till end of July, 2022. 140 subjects are included age 17-30 (74 male Recreational Bodybuilder Who Abuse Anabolic Steroids on Simvastatin’s 10mg and Acetylsalicylic Acid 150mg doses of (ASA) and 10 grams of Polyunsaturated Fatty Acids during mass Steroid Cycles and 66 impellers group of male Recreational Bodybuilder Who Abuse Anabolic Steroids consisting without consume Statins and Acetylsalicylic Acid (ASA) during mass Steroid Cycles). For the testing of statistical significance of differences between the exanimated groups non-parameter and parameter tests were used. The difference at a level of p< (0,001) was statistically significant. Results: In all the tested subjects we investigated increasing lipid levels and blood pressure after six months of study. Analysis shows the statistically insignificant influence of antiplatelet therapy (150mg Acetylsalicylic acid) (ASA), combined with Simvastatin 10mg p<(0,001) in steroid abuse subjects during irrational muscle mass steroid cycles. Conclusion: Lack of familiarity with combinations of anabolic substances, as well as the danger of oral applications of very harmful steroids from the former Soviet Union and German Democratic Republic (GDR), this study showed. Avoidance of physician supervision by recreate bodybuilders by deceiving of the athletic subjectivity look, seams appears almost always in gym. This cardiovascular protective measures have poor benefit appeared to be usefully blind preventing strategy of controlling blood lipid levels during muscle mass steroid cycles, with no guaranty of worsen cardiovascular condition by abusing anabolic steroids. The influence of the reflection of the COVID 19 virus on such dramatic therapeutic results in this population group of two groups cannot be ruled out for sure.

Introduction: Adequate individual physical activity after COVID 19 infection as a inevitable part of postoperative therapy of surgically treated vascular and endovascular patients witch still remains a scientific unexplored international neglected secret. General post-covid symptomatology is increasingly present in patients with surgical or endovascular procedures on the iliac segment in the form of a manifestation of various complaints that can affect the very accessibility of the choice of treatment according to the TASC II guidelines, but also affect physical activity and quality of life. Besides the medicament treatment, the management of moderate intensity exercise therapy and future consistency of self-controlled exercise after surgical and endovascular after treatment in iliac critic stenosis with other asymptomatic systemic atherosclerosis can be important factor to support and improve benefits of surgical and endovascular treatment outcome in variable symptomatology of POSTCOVID 19 patients treated classical surgical and endovascular. Goals: The focus is on priority of investigation of remodeling the pattern of cultural smoking behavior and increasing the dynamic of physical activity trying to prevent and avoid potential risk of sudden death, myocardial infarction, stroke graft (stent) occlusion, and cardiovascular mortality in patients with POSTCOVID 19 symptomatology in which is besides other asymptomatic systemic atherosclerosis is the main disease critical iliac artery stenosis (TASC II A and B). Scientifically unproven that sometimes can be associated with poor outcome of surgical intervention the which are in deficit with scientific studies to confirm these scientific observations. Second goals are to investigate the potential possibility of POST COVID 19 symptomatology associated with the success of classic surgical bypass or endovascular intervention and the possibility of reflection on physical activity after vascular intervention. Also the improving and secure the quality of life after successful surgical bypass and endovascular revascularization treatment with influence on primary iliac (TASC II A and B) vascular intervention potency one of main goals as well suppress permanent or permanent consequences of the Covid 19 virus during therapeutic surgical or endovascular procedures of the iliac segment (TASC II A and B) Traditional food as well wrong choice of diet and continuous fight with nicotinism is still remains generally main health threat. Subjects and Methods: 266 Symptomatic post COVID 19 Patients with were observed during 3 years (134 patients with surgical dacron reconstruction and 132 with endovascular treatmant of short segment critical iliac artery stenosis) Moderate interval Intensity Training with Short Interval Repetitions on standard treadmill procedure. Results: The connection of the outcome of surgical and endovascular treatment with post and long covid 19 symptomatology is possible and has a significant impact on the quality of the continuation of physical medication therapy. Difference between the surgical and endovascular groups was observed after the implementation of the treatment as well as factors affecting the outcome of therapy. the outcome is devastating with the prevention of the risk factor of nicotism as well as with the lack of physical activity in some groups. Conclusion: Primary potency after Three years of Endovascular procedure and Dacron bypass Revascularization, has shown as successful with support of supervised exercise training in POSTCOVID 19 patients. Nicotiism still remains highly potency outcome threat when supporting exercise therapy. Also, future and recent studies on this topic should expand their understanding of the effect of the COVID 19 virus on the body in this patients, as well as improving the quality of life in order to improve the patency of bypass or endovascular intervention on the arterial iliac segment.

Background/Aim: The aim of this study was to determine the accuracy of overall and anterior Bolton's ratio measurements obtained with an intraoral scanner compared to standard caliper measurements on plaster models. Material and Methods: This study included 33 subjects (18 female and 15 male), aged 12 to 18 years. All subjects were taken impression for the purpose of making study plaster models. In addition, all subjects underwent intraoral scanning for the purpose of creating digital models. Tooth width was measured with a caliper on plaster models, while digital models were analyzed using Cerec Ortho SW 2.0.2 software. The overall and anterior Bolton ratios were derived using both methods. Statistical data processing was performed using an independent t-test. Results: The results obtained using these two methods for measuring the anterior and overall Bolton ratio showed that there was no statistically significant difference in the measurements obtained on plaster models and the measurements obtained by intraoral scanning. For the overall Bolton ratio, T-test was 0.828 and is not statistically significant (p<0.05). The value of T-test for the anterior Bolton ratio was 0.001 and it was also not statistically significant (p<0.05). Conclusions: Determination the overall and anterior Bolton ratio using an intraoral scanner is an accurate and acceptable method for clinical work in orthodontics.

In this study, the selection of suppliers within an alternative food supply network for fruits and vegetables, specifically Box Schemes, was conducted using multi-criteria decision-making methods. The Entropy-MABAC method was used as the multi-criteria decision-making approach, and the research focused on five suppliers from the city of Novi Sad. Eleven socioeconomic criteria were chosen for the research to identify the most favourable supplier. The results indicate that the criterion "product character," i.e., whether the final agricultural product is organic or conventional, was rated the highest, and the first supplier was selected as the most favourable. These results provide a solid foundation for future research, which should focus on further examining the impact of supply methods on end consumers of agricultural products within the alternative food network and developing new methods to aid in selecting the most favourable supplier.

Background: The organizational climate is defined as the perception of events within the work environment (relationships, values, actions) among organization members that are psychologically meaningful. It also includes the influence of the surroundings on employee motivation and behavior. This concept is studied within the field of industrial and organizational psychology, particularly focusing on healthcare institutions. Objective: The study aims to explain the concept, definition, and history of organizational climate, with a specific focus on healthcare institutions. It also aims to examine the factors influencing the work environment and the extent to which they can improve it. Methods: The research utilizes both quantitative and qualitative methods. The quantitative approach is presented through a non-standardized survey method. Qualitative research was conducted using case studies of healthcare institutions in Sarajevo Canton. The integration of these methods allowed for a comprehensive examination of the organizational climate. Results: The survey provided detailed insights into the organizational climate within healthcare institutions in Sarajevo Canton. It identified key factors that influence the work environment and highlighted areas for potential improvement. Discussion: The findings underscore the importance of strategic management of human resources and potential in creating a positive organizational climate. The study suggests that improving organizational climate is a long-term, multi-layered process involving doctors, managers, and all organizational members working towards common goals. Further research is needed to explore specific interventions that can enhance organizational climate in healthcare settings. Conclusion: This underscores the need for healthcare institutions to focus on fostering a supportive organizational climate and nurturing positive interpersonal interactions to enhance overall job satisfaction among employees.

We investigate a discrete counterpart of planar dynamical system of nonlinear differential equations induced by kinetic differential equations for a two-species chemical reaction. Chemical reactions exhibit a wide range of dynamical behavior. We show how the theoretical analysis provides insight into the potential behavior of chemical reaction systems, determining the areas of parametric space which indicate scenarios for local stability, then for one type of bifurcation co-dimension one and one type of bifurcation co-dimension two. Precisely, we prove the existence of period-doubling bifurcation and 1:2 resonance bifurcation also, by using the center manifold theorem and the technique of normal forms. All mathematical investigations are illustrated with numerical examples, bifurcation diagrams, Lyapunov exponents and phase portraits.

Given the undeniable clinical and prognostic value, the function of the left atrium (LA) plays a leading role in the contemporary evaluation of cardiac diseases and is considered an essential morphological substrate for the development of cardiovascular diseases. It is sensitive to nervous, endocrine, and immunological stimuli. New evidence from the literature highlights the importance of fibrotic, electrical, and autonomic remodeling of the LA, introducing the concept of atrial cardiomyopathy, which is closely associated with atrial fibrillation and stroke. In the past, the diameter of the LA was the most important parameter for assessing its characteristics, but new information about the various roles of the LA has created the need for parameters that more precisely or thoroughly evaluate LA function. The function of the LA is complex, consisting of three phases: the reservoir phase (ventricular systole), the conduit phase (early diastole), and the pump phase (late diastole). The introduction of myocardial deformation analysis, or strain of the LA via speckle tracking, has achieved significant progress in detecting even subtle functional abnormalities before an increase in LA size. This method improves the diagnostic capabilities of standard echocardiographic examinations, and its diagnostic and prognostic value is sometimes comparable to more advanced and less accessible techniques such as cardiac magnetic resonance imaging and computed tomography.

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