There is no medical field where the impact of medical evolution is more palpable than in kidney transplantation. The pioneers of this procedure, 70 years ago, laid out the foundation for organ transplantation in general and kidney transplantation in particular. Despite the incredible advancements that have been made since, huge differences exist worldwide in terms of access, equity and quality of care. Nowhere are these disparities more prominent than in developing countries with limited resources, underfunded healthcare systems and transplantation infrastructures, particularly the Western Balkans. This position paper delineates the biggest barriers hindering the development of kidney transplantation in the Western Balkans, put forth and agreed upon by a group of regional experts on the field, based on the Modified Delphi Method. Limitations in training, infrastructure, restrictive and outdated legislative practices, lack of a centralized coordination network and fragmented regional collaboration, emerged as the principal challenges. Endorsed by European Society for Organ Transplantation (ESOT), this paper outlines a pragmatic and practical framework to overcome these obstacles, towards building robust and sustainable transplantation programs that ensure high-quality and equitable access to kidney transplantation, for all patients in this region.

Introduction : Drug–drug interactions (DDIs) influence treatment outcomes, particularly in complex diseases such as coronavirus disease 2019 (COVID-19). This study aimed to evaluate the impact of DDIs in COVID-19 patients. Materials and methods : A study was conducted on 200 patients with mild, moderate, or severe COVID-19 infections. Next, DDIs were classified into five risk categories (A–X). Results : Altogether, 1689 DDIs were identified (maximum of 64 per patient). Most interactions were category C (65.3%). Clinically significant DDIs (C–X) accounted for 73.6% of interactions. Positive correlations were found between the total number of DDIs and both the total number of drugs (very strong) and comorbidities/diagnoses (strong). Patients with severe COVID-19 infections had significantly more DDIs and drugs used. Polypharmacy was highly frequent (97.5%, average of 9.9 drugs per patient). Conclusion : Overall, COVID-19 patients often have clinically significant DDIs resulting from polypharmacy and comorbidities, especially in severe cases. Systematic DDI assessment is essential.

Soda is a key raw material widely used in various industries, including food, pharmaceuticals, detergents, and glass production. At the "Sisecam Soda Lukavac" plant, soda is produced using the Solvay process, which relies on an aqueous solution of sodium chloride (NaCl) and calcium carbonate (CaCO₃). Due to the limited availability of global soda sources, efforts are being made to increase production capacity. However, higher production requires greater amounts of industrial water, resulting in increased consumption of fresh water from the Modrac reservoir. To reduce this consumption and minimize environmental impact, this study investigates the reuse of the waste condensate stream from the slaking drums as the aqueous solution of calcium hydroxide (lime milk) through the installation of a barometric condenser operating on the principle of direct contact between the cooling medium and steam. A barometric condenser was proposed for recovering approximately 8339.3 kg/h of steam, which would reduce water consumption by 7.58% and thermal energy losses by 29.3 %, with a payback period of less than six years. Reusing this waste condensate stream is expected to achieve significant operational, ecological, and economic improvements. KEYWORDS:soda production, waste stream, condensate, water, reuse

Cadmium is recognized as one of the most hazardous heavy metals, ranking among the top ten in terms of toxicity. With the growing industrial reliance on cadmium for various manufacturing processes, concerns have risen within the scientific community regarding its presence in wastewater and the challenges associated with its removal. This research investigates the potential for removing Cd(II) ions from a synthetic aqueous solution by utilizing NaHCO3as a precipitating agent. The removal efficiency exceeded 99%, with the most effective conditions identified as: pH 8, a stirring speed of 300 rpm, a stirring duration of 5 minutes, and a precipitation agent of 90 mg. Additionally, removal efficiencies of 96.256% and 91.234% were achieved at cadmium concentrations of 150 mg/L and 300 mg/L, respectively. The removal of Cd(II) ions was found to be more efficient in a mixture of metals, with an efficiency above 98%, compared to when individual metals were considered in isolation.KEYWORDS:Cd(II) ions, most effective conditions, removal efficiency

The paper deals with the assessment of risks related to drinkingwater quality, the analysis of physicochemical and microbiological parameters that are key to assessing human safety and health. Through a detailed analysis of these parameters, the paper investigates whether the appropriate physicochemical and microbiological parameters are within the framework defined by the regulation, and whether they may pose a threat to human health.Physicochemical parameters include aspects such as pH values, electrical conductivity, oxidizability, concentrations of various chemical compounds (such as nitrates, nitrites, ammonia, chlorides, heavy metals, etc.) and represent the degree of pollution bychemicals that may pose a threat to human health, while microbiological parameters relate to the presence of pathogenic bacteria, viruses and parasites that can cause various diseases in humans.The paper uses data from laboratory analyses of water samples monitored at 32 locations in the Tuzla Canton during two seasons. Through this assessment, the paper highlights the importance of regular monitoring of drinking water quality, as well as the implementation of adequate measures to prevent potential health hazards for users.KEYWORDS:public water fountains, physical-chemical analysis, microbiological analysis

Cornus mas L. is traditionally used for various medicinal purposes, although systematic data on its pharmacognostic properties are still limited. Considerable variation was observed among plant organs, so phenolic and flavonoid content varied by plant part, with location-related differences among samples, with the highest in leaf and fruit from Bijeljina and the lowest in leaf from Sarajevo. Antioxidant activity was much better in leaf and bark than in fruit. Extracts inhibited ESBL-producing Escherichia coli, with MICs mainly at 125 µg/mL; bark extract (Tuzla) showed 250 µg/mL and reduced biofilm formation. Leaf and bark extracts showed dose-dependent cytotoxicity against PC-9, MCF-7, and MDA-MB-231 cells, while fruit extracts were weaker. In human lymphocytes, bark (Bileća) and leaf (Tuzla) extracts decreased nuclear division and induced micronuclei at 200 µg/mL. Molecular docking indicated strong bacterial target binding for loganin and cornuside, supporting the antibacterial and antitumor potential of C. mas.

Climate change is an existential threat, and it is often difficult to translate the urgency and immediacy of climate catastrophes into common parlance. One way to effectively engage the public in climate change conversations is through effective communication practices, such as persuasive communication. Persuasive communication uses tailored messages to elicit desirable behavioural outcomes in the audience and has great potential to promote positive attitudinal and behavioural changes in the target audience. However, while persuasive communication has potential, recurring evidence suggests that using fear appeals in climate change communication can create unintentional mental health challenges for the audience. In light of the scale and scope of climate crises, positive, personal, and people‐centred persuasive communications may be more suitable for long‐term and sustainable deployment. However, there is a shortage of research in the literature. Bridging this research gap, this paper aims to explore how fear‐based climate communications impact public mental health and how alternative positive messaging frameworks can serve as sustainable interventions. This study seeks to enhance public mental health and cultivate a sense of engagement and responsibility among individuals, thereby facilitating collective action and influencing policymakers to implement more constructive climate‐response strategies. Ultimately, we aspire to offer inclusive and sustainable solutions that empower the public to actively participate in protecting our shared environment while mitigating climate change.

This study investigates the impact of reusing commercial hydrated lime as a heterogeneous catalyst on the content of fatty acid methyl esters (FAME) and its characteristics in the methanolysis process of rapeseed oil. The reuse evaluation was conducted by performing consecutive methanolysis reactions up to three times under optimal reaction conditions. Characterization of both unused (fresh) and used catalyst (after the first use and third reuse) was carried out using XRD and SEM/EDS methods, in order to examine structural and morphological changes associated with the catalytic activity of hydrated lime. After the first, second, and third consecutive reuses of commercial hydrated lime under optimal methanolysis conditions, FAME content of 95.46%, 93.92%, and 80.01%, respectively, were achieved. The aforementioned FAME content is high but it is below the minimum ester content requirement set by the EN 14214. Therefore, repeated use of hydrated lime reduces its catalytic activity, resulting in lower FAME content compared to the content obtained with fresh catalyst (96.7%). It was demonstrated that the extent of catalytic activity reduction is correlated with the number of reuses, but also depends on the chemical, structural, and textural properties of the catalyst. XRD analysis of the catalyst after the first use and third reuse revealed the formation of a new crystalline phase, calcium diglyceroxide (C6H14CaO6), identified as the primary crystalline phase, along with Ca(OH)₂ and CaCO₃ as secondary crystalline phases. KEYWORDS:biodiesel, methanolysis, fatty acid methyl esters, heterogeneous catalyst, hydrated lime, reuse

Economic, technological, and industrial development, along with rising energy demand in Tuzla Canton, particularly in the municipality of Lukavac has led to increased air pollution and environmental degradation, affecting water and soil quality. This paper analyzes data on air pollutants in the urban and industrial areas of Lukavac for 2018 and 2019. Data for the urban area were obtained from the Ministry of Environmental Protection of Tuzla Canton, while industrial data came from Global Ispat Coke Industry Lukavac. In 2018, sulfur dioxide levels in the urban area exceeded limit values, while PM2.5 and nitrogen oxides were particularly high during winter months due to natural and anthropogenic factors. Carbon monoxide remained within permitted levels. In 2019, sulfur dioxide and particulate matter occasionally exceeded limits, while nitrogen oxides, ozone, and carbon monoxide were below them. In the industrial zone, annual concentrations of carbon monoxide, sulfur dioxide, hydrogen sulfide, and particulate matter exceeded permitted values in both years, although sulfur dioxide and nitrogen oxides met regulatory limits. Air pollution poses serious health risks, increasing respiratory and cardiovascular diseases, especially among vulnerable groups such as the elderly, children, pregnant women, and industrial workers.KEYWORDS:air pollution, pollutants, urban area, industrial area