In this study, the chemical activation hydrochar of the spent mushroom substrate was used to examine its potential for application as a sorbent in order to remove Pb2+ from aqueous solutions. The hydrocar was prepared in a hydrothermal reactor at a temperature of 200 °C for a reaction time of 1 h. It was then chemically modified with 20 %...

By Marija Kojić, Slavica Porobić, Đurica Katnić, Biljana Sikirić, Antonije Onjia, Milena Marinović-Cincović

 Environmental threats such as pollution, climate change, depletion of fossil fuels reserves has imposed an urgent need to take action in looking for sustainable solutions. One of the items of environmental protection is energy saving, which is especially important in manufacturing of widespread use materials such as acrylate superabsorbents. ...

By Tamara Erceg, Suzana Cakić, Vesna Teofilović, Nevena Vukić, Jelena Tanasić, Ivan Ristić

 Organogels are semi-solid materials in which gelator molecules in the presence of chosen organic solvent compose self-assembled mesh structure that prevent solvent to flow. During a past few decades, the application of different organogel systems into numerous areas of materials science has been approved (e. g. drug delivery). Considering cru...

By Nenad Janković, Emilija Milović, Jelena Petronijević, Nenad Joksimović, Dušan Milivojević

 Rheological models represent a powerful tool for creating a comprehensive phenomenological view of the strain response, especially in structures exposed to long-term loading. Models are often arranged to fit experimental results, and this is achieved by including empirical parameters in their formation. Combining theoretically ideal bodies wi...

By Nataša Kopitović-Vuković, Nikola Baša, Radomir Zejak, Marija Jevrić

 Information Technology School ITS- Belgrade, College of Vocational Studies, thanks to modern tools, information technology, information systems, information and communication technologies, enjoys an excellent reputation among the professional and academic public in the Republic of Serbia, as well as among academics. The article brings a case ...

By Svetlana Anđelić, Bojan S. Ristić, Goran Radić, Velimir Dedi, Milena Ilić

 In recent years, we have witnessed an increasing number of IoT devices in almost all spheres of life. Regardless of mobility or mode of communication, it is expected from IoT devices to work for years without failure, despite the fact that they are battery powered. Therefore, the key challenge is energy efficiency and to reduce battery consum...

By Saša Salapura, Nebojša Kuduz

 The development of the e-book, in recent years, has initiated numerous debates and analysis, emphasizing reading habits as well as the effects of the mass digitalization, partially including coronavirus pandemic this last year. E – books are available in various formats, and they include various media. The highest domination is achieved...

By Aldin Obućina, Ahmed Palić, Admir Šupić

 This paper is the result of an effort to study the most significant conflict theories and identify the most significant areas of conflict potential. There are a large number of conflicting theories in sociology that differ from each other, but all agree on that there are groups in society that have different interests. It is the existence of ...

By Ostoja Barašin

 The purpose of this paper is to analyse the role of unreliable narrator in Vladmir Nabokov’s novel Ada, as well as motivation igniting the story, worlds and realities that Van creates in his multilayered storytelling. It tries to see beyond what Veen claims his motifs are and discover what great need gives birth to Veen’s timeles...

By Ivana Aleksić, Snježana Jež Milačak

 The question of how to motivate students in ESP teaching is one that does not have a single and simple answer because motivation is an extremely broad and complex construct. This paper relies on Zoltan Dörnyei’s definition of motivational strategies and his process-oriented model of learning motivation in the L2 classroom. It prese...

By Nada Buzadžić Nikolajević