No abstract

Benthic diatoms have gained prominence as environmental bioindicators since the beginning of the twentieth century. Epilithic diatom taxa are frequently used for ecological water-quality assessments of rivers. Diversity of these dominant group of protists in the benthic communities can be indicative of changes in the freshwater ecosystem. The aim of this study was to analyze the diversity and ecology of diatoms of the Spreča River on the locations affected by urban and industrial pollution. Field sampling of the epilithic diatoms was carried out in the period of May 2021 at two locations, first before and second after the Lukavac city, which is known as industrial city in Bosnia and Herzegovina. Taxonomic verification was carried out using light microscope on permanent slides and revealed in total 38 diatom taxa. The genera with the largest number of species were Diatoma, Navicula and Nitzshia. Identified taxa are widespread species that are known for tolerating  high levels of pollution. A slightly higher number of taxa was recorded at the first location, while at the second, a higher proportion of halophilic taxa was observed.

The development of industry, agriculture, transport and urbanization has resulted in excessive emissions of heavy metals into the environment, which due to their bioaccumulative properties express negative effects on the environment and living organisms as a whole. In this work the presence of heavy metals in the soil samples of the urban area of Lukavac and Kalesija municipality and their effect on the health of the population were studied. Soil samples were collected in October 2017 at five locations in the urban area of Lukavac municipality and two urban locations in Kalesija municipality. Concentrations of chromium (Cr) copper (Cu), cobalt (Co), nickel (Ni), cadmium (Cd), lead (Pb), manganese (Mn), iron (Fe) and zinc (Zn) in the soil samples were determined. The results indicated that in some locations the concentration of heavy metals exceeded the maximum permissible concentration (MPC). MPC value for chromium was exceeded at four locations in the urban area of Lukavac, whereas MPC value for nickel and cadmium was exceeded at all locations. In Kalesija, MPC value was exceeded for chromium and nickel at one location, while cadmium MPC was exceeded at both locations. The negative impact of heavy metals on the health of the population is the cause of many malignant diseases. Statistical analysis of the number of patients with malignant diseases in the area of the Lukavac and Kalesija revealed significantly higher prevalence of malignant diseases of the lungs, breast, skin and cervix in the Lukavac (p<0,05) in comparisson to Kalesija municipality.

The relationship between identity and national consciousness is one of the important issues, not only, of the sociology of identity but of the overall opinion of the social sciences. This scientific question has been insufficiently researched in the sociological thought of Bosnia and Herzegovina, and with this paper we are trying to actualize it. Aware of theoretical-methodological and conceptual-logical difficulties related to the research problem, we considered that in the first part of the paper we make some theoretical-methodological notes on the problems in studying this phenomenon, in order to, above all, eliminate conceptual-logical dilemmas. The use of terms and their meaning in sociology and other social sciences is a very important theoretical and methodological issue. The question justifiably arises whether we can adequately name and explain some of the “character traits” of the contemporary national identity of the Bosniak nation that we want to talk about in this paper with classical, generally accepted terms, identity, consciousness, self-awareness, shame or shame, self-shame. Another important theoretical issue of the relationship between identity and consciousness in our case, the relationship between the national consciousness of Bosniaks and their overall socio-historical identity is the dialectical relationship between individual and collective consciousness, ie. the extent to which the national consciousness of an individual or a particular national group, political, cultural, educational, age, etc., is contrary to generally accepted national values and norms. One of the important factors of national consciousness is the culture of remembrance. What does it look like for Bosniaks? More specifically, in this paper we problematize the influence of “prejudicial historiography” on the development of the culture of memory in the direction of oblivion or memory. What to remember, and why to remember. Memory is part of our identity. The phrase, not to deal with the past but to turn to the future, is impossible. How to project the future and not analyze the past. On the basis of what, what social facts? Why the world remembers the crimes of the Nazis, why the memory of the Holocaust and the suffering of the Jews is being renewed. Which is why Bosniaks would not remember and renew the memory of the genocides committed against them. Due to the Bosniak memory of genocide, it is possible that the perpetrators of genocide are celebrated as national heroes and their atrocities as a national liberation struggle. Why is the history of literature and art, political history and all other histories studied in all nations and nations. Why don't European kingdoms give up their own, queens and kings, princesses and princes. These and other theoretical-methodological questions have served us to use comparative analysis to show specific forms of self-esteem among Bosniaks today. The concrete socio-historical examples we cite fully confirm our hypothesis. Here are a few of these examples. Our eastern neighbors invented their epic hero Marko Kraljevic (Ottoman vassal and soldier, killed as a “Turkish” soldier in the fight against Christian soldiers in Bulgaria) who killed the fictional Musa Kesedzija, invented victory on the field of Kosovo, and Bosniaks forgot the real Bosniak epic heroes , brothers Mujo and Halil Hrnjic, Tala od Orašac, Mustaj-beg Lički and others, who defended Bosniaks from persecution and ethnic cleansing in the Bosnian Krajina. Dozens of schools in Bosnia and Herzegovina have been named after the Serbian language reformer, the Serb Vuk Stefanović Karađić (1787-1864), who was born in the village of Tršić near Loznica, Republic of Serbia. Uskufije (1601 / 1602.-?), Born in Dobrinja near Tuzla. Two important guslars and narrators of epic folk songs, Filip Višnjić (1767-1834) and Avdo Medjedović (1875-1953), are unequally present in the memory and symbolic content of the national groups to which they belong, even if the difference in quality is on the side of the almost forgotten. Avdo Medjedovic, the “Balkan Homer”, is known at Harvard University, but very little is known in Bosnia and Herzegovina. And while we learned everything about the murderer Gavril Princip, enlightened by the “logic of an idea” (Hannah Arendt) symbolizing him as a “national hero”, we knew nothing, nor should we have known, about Muhamed Hadžijamaković, a Bosnian patriot and legal soldier, he did not kill a single pregnant woman , a fighter in the Bosnian Army who fought against the Austro-Hungarian occupation of Bosnia and Herzegovina in 1878. When it comes to World War II and the fight against fascism are full of hero stories. For one example, we will take Srebrenica, the place of genocidal suffering of Bosniaks. Before the war against Bosnian society and the state 1992-1995. in Srebrenica, the elementary school was called Mihajlo Bjelakovic, a partisan, born in Vidrići near Sokolac. Died in Srebrenica in 1944. The high school in Srebrenica was named Midhat Hacam, a partisan born in the vicinity of Vares. It is not a problem that these two educational institutions were named after two anti-fascists, whose individual work is not known except that they died. None of them were from Srebrenica. That's not a problem either. Then what is it. In the collective memory of Bosniaks. Until recently, the name of the two Srebrenica benefactors and heroes who saved 3,500 Srebrenica Serbs from the Ustasha massacre in 1942, who were imprisoned by the Ustashas in the camp, has not been recorded. These are Ali (Jusuf) efendi Klančević (1888-1952) and his son Nazif Klančević (1910-1975). Nothing was said about them as anti-fascists, most likely that Alija eff. Klančević was an imam-hodža, his work is valued according to Andrić's “logic” as a work that cannot “be the subject of our work” In charity, humanitarian work, but also courage, sacrifice, direct participation in the fight for defense, the strongest Bosniaks do not lag behind Bosniaks, but just like Bosniaks, they are not symbolically represented in the public space of Bosnia and Herzegovina. We had the opportunity to learn about the partisan Marija Bursać and many others, but why the name Ifaket-hanuma Tuzlić-Salihagić (1908-1942), the daughter of Bakir-beg Tulić, was forgotten. In order to feed the muhadjers from eastern Bosnia, Ifaket-hanum, despite the warning not to go for food to Bosanska Dubica, she left. She bravely stood in front of the Ustashas who arrested her and took her to Jasenovac. She was tortured in the camp and eventually died in the greatest agony, watered and fried with hot oil. Nothing was known about that victim of Ustasha crimes. Is it because she is the daughter of Bakir-beg Tuzlić. Bey's children were not desirable in public as benefactors because they were “remnants of rotten feudalism”, belonging to the “sphere of another culture”. In this paper, we have mentioned other, concrete, examples of Bosniak monasticism, from the symbolic content of the entire public space to naming children.

In this paper a mathematical model for the soda ash drying process in a pneumatic dryer was presented. The model presents a macroscopic aspect of the drying process, for a two-phase, gas-solid system. The model is based on mass and heat transfer between the gas phase and the particle, movement of air and particles through the system, and geometric characteristics of the drying system (fan, air heater, pneumatic dryer, and cyclone). The effects of the process parameters, such as airflow, inlet air temperature, and relative humidity, temperature at the inlet of the dryer, etc., have been studied by solving the model. Also, the model was tested for different values of the capacity of wet soda and different values of the operating parameters of the heating medium. The model was implemented in MATLAB and solved with a nonlinear equations solver. Data obtained by the model were compared with industrial pneumatic dryer data for drying wet soda ash particles with good agreement.