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To research potential replacements for LiMn2O4, this work carries out a synthesis of ZnMn2O4 (ZMO) through the glycine-nitrate combustion. XRPD validates its phase characterization; electron micro-scopy confirmed the presence of single phase ZMO in the form of curvy and rod-shaped sub-micron sized particles at an average of 113 nm. This work is novel for its electrochemical measurements of ZMO as a cathodic material for alkali-ion batteries, performed by cyclic voltammetry in aqueous solutions of ZnCl2 and NaNO3 ranging from 5 to 100 mV s–1 polarization rates, yielding stable capacities for both electrolytes. The highest capacities were obtained for the polarization speed of 5 mV s–1 for both electrolytes. Their cathode capacities were 11.3 and 27.2 mA h g–1 for ZnCl2 and NaNO3, respectively. Concerning Na-ions batteries, the surface storage is the deciding factor due to the adsorption of Na+ ions on the λ-MnO2 phase. Unlike Zn-ions, Na+ ions cannot intercalate into the spinel structured materials. [ABSTRACT FROM AUTHOR]

Water is one of the key ecological factors that has a great impact to development and productivity of lowland species such as Quercus robur. This paper deals with water regime influence to site conditions of these species and how actually changeable soil moisture affects Q. robur. Studied area includes a protective embankment built on the river bank in order to eliminate flooding effect, which means that all needs for water these associations provide from rainfalls and groundwater. Water regime was monitored during two critical years (extremely dry and extremely wet) on four soil types – Planosol, Fluvisol and Gleysol that belong to hydromorphic (three experimental plots) and Chernozem which belongs to automorphic soils (three experimental plots), respectively. It was studied the distribution of rainfalls and groundwater during the growing seasons and how it affects total and available water amount in the soil. The main focus should be given to available water, because it is located in capillary pores and plants can utilize it. Bearing in mind rainfalls makes just 15–20% of the total water amount in the soil it is much more significant to evaluate its proportion in available water. Based on obtained results, we can deduce that much more suitable site conditions for Q. robur are present on hydromorphic soils due to much greater proportion of groundwater.

In 1961, the first Zagreb Music Biennale (MBZ) was held in Yugoslavia, an international festival of contemporary music with two main objectives: to familiarize the domestic audience with contemporary musical endeavors worldwide and to contribute to the international recognition of Yugoslav endeavours. Vojin Komadina (1933-1997) made his debut at the fourth MBZ in 1967 and until the 1980s remained the only composer from Bosnia and Herzegovina whose works were performed at this most significant contemporary music festival in Yugoslavia. Drawing on insights into stylistic and compositional tendencies in Yugoslav music during the 1960s, 1970s, and 1980s, this paper examines the various contexts of performances of Komadina's works at the Zagreb Music Biennale. The author's works are analyzed in relation to the MBZ's selection criteria, establishing Vojin Komadina's position at this international festival. Another important aspect of the study is the reception of Komadina's work from the MBZ repertoire. By considering critical reviews of this event published in the press during the second half of the 20th century, including musical periodicals (Zvuk, Promusica), cultural and social magazines (Telegram, 15 dana), and daily newspapers (Vjesnik, Večernji list, Oslobođenje), this research reveals various (even completely opposite) reactions of contemporary music critics to Komadina's works from the biennial repertoire. Although Vojin Komadina's works have not been performed at the MBZ since 1983, this does not diminish the significance of this festival as a place of international recognition for musicians in the professional career of the Bosnian-Herzegovinian composer. The fact that from the second half of the 1960s to the first half of the 1980s, Komadina was the only author from Bosnia and Herzegovina to participate in the Zagreb Music Biennale, the largest contemporary music festival in this part of Europe, speaks to the composer's status not only within domestic, Bosnian-Herzegovinian, and Yugoslav contexts but also in international frameworks.

Background/Aim. Despite all innovations in medicine, melanoma still has a rising incidence and high mortality and thus represents a significant challenge for the healthcare system. The pandemic of the coronavirus dis-ease 2019 (COVID-19), spanning three years, redirected healthcare resources, suspended preventive programs, and strained the healthcare system, significantly impacting melanoma management. The aim of this study was to assess the influence of the COVID-19 pandemic on the treatment of melanoma patients. Methods. This retrospective study analyzed melanoma patients treated at a single tertiary care center over two distinct three-year periods: pre-COVID period (2017–2020) and the COVID-19 pandemic period (2020–2022). The following data were collected and compared: patient demographics, melanoma characteristics, time intervals from biopsy to surgery, and the share of thin and thick melanoma. Results. During the COVID-19 pandemic period, there was a 3 0% reduction in melanoma patients compared to the pre-COVID- 19 period. The decline was most pronounced in 2020 when the state of emergency was introduced in the country. Thin melanoma percentage as a measurement of successful screening programs decreased significantly during the COVID-19 pandemic (11.57% vs. 24.01%), while median Breslow thickness remained stable. The distribution of different histological types was consistent across both periods. The average time from biopsy to surgery remained similar between the two periods, around 40 days. Conclusion. Despite challenges posed by the COVID-19 pandemic, melanoma remains a critical healthcare issue. This study emphasized the significance of prioritizing melanoma care in emergencies, ensuring patient identification and timely treatment in order to optimize survival and minimize treatment costs.

Since that 65% of the surface managed by the Public Enterprise (PE) “Vojvodinašume” are in some degree of protection, protected areas management is one of the key elements in the company’s business policy. The management of protected areas, especially in the current circumstances of the evident climate change effects, has become a challenge for nature protection and other sectors, and therefore also for PE “Vojvodinašume”. Protected areas are drivers of the rural economy and a key element in the development of rural area strategies. The aim of the work is to present examples of cooperation with stakeholders from the public, private and civil sectors, on the planning and implementation of activities that contribute to the sustainable protected areas management. The activities of PE “Vojvodinašume” protected areas management include: sustainable management of resources, protection of biodiversity, conflict resolution, provision of benefits for society, and especially for the local community, promotion of natural values, etc. Sustainable management of protected areas in PE “Vojvodinašume” implies multifunctional and long-term management that is adapted to local, i.e. regional conditions.

The oak forests in the area of the Special Nature Reserve “Obedska bara” are extremely valuable and unique at the national and European level, which is why they are recognized as the fundamental value of the reserve. The local name of the oldest complex of oak forests in the special nature reserve is “Debela gora rainforest” and it has been placed in the first degree of protection regime. Given that it is included in the first level protection regime, the priority goal of forest management is the preservation of biological diversity, which implies the absence of any management treatments. As a result of this approach, there is a loss of oaks and other species with higher demands for light, therefore other species such as hornbeam appear and take over, which is subject of analysis in this paper. Given that the replacement of species is not the goal of forest management in areas under the first degree of protection, this paper proposes forest management protective measures aimed at the restoration and revitalization of areas that could be implemented with the consent of the competent institutions.

Recently, research into finding long-term solutions to CO2 mitigation in the cement and concrete sectors was initiated since commonly used supplementary cementitious materials are not globally available in sufficient amounts. One of the possible solutions to that problem is to develop concrete with a higher percentage of limestone in the powder phase. This work presents a critical overview of the state-of-the-art in the field of the carbonation resistance of limestone powder concrete. Experimental research performed so far has shown that if the simple replacement of cement with limestone powder is applied in the standard mix design, a maximum of 10-15% of cement (clinker) could be replaced to maintain similar carbonation resistance. It has also been proven that the dilution effect of weakly inert limestone powder can be compensated for with several measures in the mix design of concrete. By adjusting the cement, limestone, and water content and their particle size distribution, it is feasible to design concrete formulations with up to 50% limestone in the powder phase that are comparable to referent Portland cement concrete in terms of rheological and mechanical performance and carbonation resistance. This is an environmentally significant reduction in the clinker content, but it comes at the cost of a larger superplasticizer content. Prediction models for the carbonation resistance of the limestone powder concrete are poorly developed. Amongst them, the fib MC 2010 prediction model is considered relatively simple and robust; however, it has not yet been proven that the model is applicable to concrete with a higher content of limestone powder (>15-20% of the powder phase). The future research should be oriented towards further optimization of the concrete mix design and implementing this model on the middle-and high-content limestone concrete carbonation.

The beginnings of pediatric anesthesiology go back to the middle of the 19th century and it is associated with a rural physician Crawford W. Long, MD, who in the 1842 recorded the first case of giving diethyl ether anesthesia to an eight-year-old boy. The start of development of contemporary pediatric anesthesia is considered to be in 1930, which marked two periods of progress. In the first period, anesthesia techniques and accessories adjusted to different children’s ages were developed. In the second period, modern anesthetic medications and supervision were introduced into everyday clinical practice in order to better protect vital organs and their functions in the child’s body. The first multidisciplinary pediatric intensive care unit at the Children’s Hospital of Gothenburg in Sweden was established in 1955. Dr. Branka Mitrović is considered to be the founder of pediatric anesthesiology in Serbia, as she founded the Department of Anesthesiology and Reanimation at the University Children’s hospital in 1955. The history of pediatric regional anesthesia began after its introduction in adults, which occurred after the invention of cocaine in 1884. The Ministry of Health of the Republic of Serbia approved a specialization in pediatric anesthesiology in 2018. The development of pediatric anesthesia is fascinating because it completely followed the development of pediatric surgery. Modern pediatric anesthesiology is entirely prepared to meet the needs of the most complex surgical interventions, as well as the treatment of critically ill children, and significantly contributes to better treatment outcomes of pediatric surgical patients.

The Long COVID-19 syndrome has emerged as global epidemic, affecting individuals after an acute infection caused by the Severe acute respiratory syndrome coronavirus 2, impacting multiple organs, including the heart. The most common symptoms encompass fatigue and shortness of breath, which could persist for months after an acute COVID-19 infection. Numerous studies have researched the pathophysiology of Long COVID-19 syndrome, suggesting that local tissue damage and hyperinflation could be employed as possible mechanisms of Long COVID-19 syndrome. Many blood biomarkers (blood urea nitrogen, D-dimer, lymphopenia, troponin-1, interleukin-6, and CRP) and clinical risk factors (CRP female sex, a history of psychiatric disorders, and the presence of more than five symptoms during the first week of an acute illness) are shown to be associated with the development of Long COVID-19 syndrome. Currently, the evidence-based specific pharmacological treatments for the Long COVID-19 syndrome are lacking. Several studies have shown an association between antiviral drugs (such as nirmatrelvir, ensitrelvir, and molnupiravir) and vaccination against COVID-19 with a reduced risk of developing Long COVID-19 syndrome. This narrative review discusses the possible pathophysiology, risk factors, and treatments for Long COVID-19 syndrome with particular reference to the cardiovascular system.

The Music in Serbia festival (Muzika u Srbiji - MUS) was held in Belgrade and other Serbian cities from 1976 to 1991. Presenting contemporary creativity of composers from the former Socialist Republic of Serbia and its two provinces (Socialist Autonomous Province of Kosovo and Socialist Autonomous Province of Vojvodina), as well as works by Serbian authors of older generations, MUS existed as a unique place of valorization and revalorization of domestic art music. Through the analysis of program and organizational strategies, financial aspects, repertoire policy, and forms of dissemination and promotion, this article points not only to the artistic scope but also to the socio-political implications of the Music in Serbia festival.