Digital platoform

National Library of Serbia

Influence of temperature and plastic deformation on AA2024 T3 friction stir welded joint microstructure

This paper deals with analysis and comparison of the equivalent plastic strain and temperature fields in the aluminium alloy 2024 T3 (AA2024 T3) joint, with macro/microstructure appearance and hardness profile. In the alloys hardened by heat treatment, grain size and particle size of the precipitate are functions of equivalent plastic strain, strain rate and temperature. By analysing the equivalent plastic strain fields and temperature fields it is possible, to some extent, to capture the effect...

Preuzmite dokument 2023 Darko Veljic , Nenad Radovic , Darko Bajić , Aleksandar Sedmak , Bojan Medjo , Mihailo Mrdak , Marko Rakin

MDPI AG

Self-Heating Flower-like Nanoconstructs with Limited Incorporation of Yttrium in Maghemite: Effect of Chemical Composition on Heating Efficiency, Cytotoxicity and Genotoxicity

Partial cation substitution can significantly change the physical properties of parent compounds. By controlling the chemical composition and knowing the mutual relationship between composition and physical properties, it is possible to tailor the properties of materials to those that are superior for desired technological application. Using the polyol synthesis procedure, a series of yttrium-substituted iron oxide nanoconstructs, γ-Fe2−xYxO3 (YIONs), was prepared. It was found that Y3+ could substitute...

Preuzmite dokument 2023 Željko Žižak , Biljana Dojčinović , Irina Besu Žižak , Tatjana Stanojković , Željko Jaćimović , Bratislav Antić , Dalibor M. Stanković , Milica Kosović-Perutović , Miloš Ognjanović

MDPI AG

Do Statistics Show Differences between Distance Estimations of 3D Objects in the Traffic Environment Using Glances, Side View Mirrors, and Camera Display?

The driver’s task in traffic is to evaluate traffic situations and act in accordance with the estimate. One of the most common causes of road crashes is “incorrect estimated of the traffic situation”. Correct perception of surroundings is one of the prerequisites for safe and successful driving. To investigate the mentioned issue, the authors of this paper conducted an experimental study with the aim of determining what affects the estimation of the object distance. In contrast to previous studies...

Preuzmite dokument 2023 Aleksandar Trifunović , Svetlana Čičević , Sreten Simović , Živana Slović , Vedran Vukšić , Tijana Ivanišević

MDPI AG

Applications of Energy Storage Systems in Enhancing Energy Management and Access in Microgrids: A Review

As the world’s population continues to grow and the demand for energy increases, there is an urgent need for sustainable and efficient energy systems. Renewable energy sources, such as wind and solar power, have the potential to play a significant role in meeting this demand, but their intermittency can make integration into existing energy systems a challenge. Moreover, the development of sustainable energy systems has become even more critical in recent years, due to a confluence of events, including...

Preuzmite dokument 2023 Ziad M. Ali , Martin Ćalasan , Shady H. E. Abdel Aleem , Foad H. Gandoman , Francisco Jurado

Faculty of Sport and Physical Education, University of Sarajevo

REHABILITATION AFTER AN ATHLETE'S ANKLE INJURY

Introduction: A bone fracture is a break in the continuity of bone tissue, caused by the action of an external or internal force on the bone. Ankle sprains are one of the most common injuries among athletes. Physically active people who participate in activities that require jumping, changing direction, and turning have an increased risk of ankle sprains. Ankle sprains and the repetitive trauma often associated with this condition can lead to long-term disability, lost time from activity, and financial...

Preuzmite dokument 2023 Amila Jaganjac , Amna Vefić , Ratko Zlatičanin , Adela Erović Vranešić , Bojan Kraljević , Amila Kapetanović

Vilnius Gediminas Technical University

MCDM MODEL FOR CRITICAL SELECTION OF BUILDING AND INSULATION MATERIALS FOR OPTIMISING ENERGY USAGE AND ENVIRONMENTAL EFFECT IN PRODUCTION FOCUS

In the context of sustainable buildings, an ecological study of building and insulating materials is critical since it may assist affirm or shift the path of new technology development. Utilising sustainable material is a part of the sustainable improvement. For this reason, material fabrication is the primary process for the energy usage and release of intense environmental gaseous. The fabrication of the insulation and building materials, as in every fabrication process, comprises an energy consumption...

Preuzmite dokument 2023 Alptekin Ulutaş , Katarina Mirković , Figen Balo , Mohamed M. H. Mostafa , Željko Stević

Informa UK Limited

Compatibility of climate adaptation strategies with livelihood vulnerability patterns: the case of Fars province, Iran

Preuzmite dokument 2023 Mansoor Zibaei , Hossein Azadi , Rytis Skominas , Goran Skataric , Samane Ghazali

SAGE Publications

The role of fire disturbances, human activities and climate change for long-term forest dynamics in upper-montane forests of the central Dinaric Alps

We present the first high-resolution Holocene pollen, plant-macrofossil, and charcoal records from the upper-montane zone in the central Dinaric Alps. Drawing on these new records from well-dated lacustrine sediments of Zminje Jezero (ca. 1500 m a.s.l.; Montenegro) and on independent chironomid-inferred summer temperatures, we explore long-term ecosystem responses to variations in climate, fire disturbances and land use, as well as legacy effects of past environmental changes. A mixed spruce-fir...

Preuzmite dokument 2023 Niccolò Marchi , Renzo Motta , Eleonora Cagliero , Walter Finsinger , Katalin Hubay , Laure Paradis , Mihály Braun , Velibor Spalevic , Zsuzsa Lisztes-Szabó , Milic Curovic , ... Pogledajte sve

National Library of Serbia

Mining meaning from online hotel reviews: identification of determinants of (dis-) satisfaction using Latent Dirichlet allocation

User-generated content (UGC) is increasing, so it is critical to clearly understand what customers think about the positive and negative aspects of specific goods. Such information is crucial for customers as well as for businesses. Online reviews are a powerful tool for a deep comprehension of customer satisfaction and dissatisfaction. This research intended to recognize the sources of satisfaction and dissatisfaction among business travelers in city hotels in Serbia. A total...

Preuzmite dokument 2023 Jelena Tepavcevic , Gojko Nikolić , Denis Dubover

Informa UK Limited

First insight into molecular diversity of interstitial water mites (Acari: Hydrachnidia): a case study from the upper Neretva River in Bosnia and Herzegovina

Preuzmite dokument 2023 Milica Jovanović , Špela Borko , Maja Zagmajster , Behare Rexhepi , Vladimir Pešić , Ekaterina S. Konopleva , Ester Premate , Andrzej Zawal