The process of transforming the economy of countries in transition is highly dynamic, turbulent and complex. These circumstances make it difficult to successfully define and implement a proper economic policy, which requires continuous monitoring of the situation in the country, as well as utilization of experiences of other countries in preserving...

By Jovan Spaić, Siniša Kusovac, Dragan Klarić

 The continuous increasing of requirements for product quality leads to increased flaw control and evaluation. One of the inspected parts of the product is a welded joint. The flaws should be eliminated as far as possible to avoid the failure or destruction of the product. In the field of weld inspection, there is the most used the non-destruc...

By Dusan Sutak, Michal Hatala, Dusan Mital, Igor Olexa, Enes Sukic

 The heat transfer operation is extremely important in various technologies, especially in the rubber industry for crosslinking and for all the steps in the process of obtaining products from elastomeric materials. The speed at which the heat can be transferred to the rubber compound or taken away from it affects the design of the process equi...

By Vladan Mićić, Jaroslava Budinski-Simendić, Branko Pejović, Jelena Pavličević, Mitar Perušić, Ljiljana Tanasić, Duško Kostić

The increase in population and the development of industry lead to an increase in water consumption, which leads to an increase in the amount of used, wastewater. Along with the urbanization and development of industry and agriculture, the level of wastewater pollution has increased. Due to the discharge of wastewater into the recipients, catastrop...

By Ljiljana Tanasić, Milan Glišić, Biljana Delić, Bojan Damnjanović, Vesna Teofilović

The potential of geothermal energy sources and their evaluation in the energy sense is the basis of a sustainable management strategy in a way that does not endanger the resources, while maximizing their potential. Geothermal energy represents one of the most promising potential for renewable energy in the region. The possibility of using warm, geo...

By Ljiljana Tanasić, Saša Spasojević, Milan Glišić, Vladan Mićić, Vera Rašković

The general form of the Biot-Savart law is referring to a closed loop, but it can be integrated over a finite length solenoid to calculate the external magnetic field in a specific point, at a rated distance from the center. The law states that the point of measure must be on the longitudinal axis of the solenoid. In real cases the point of measure...

By Bogdan Iuga, Tirnovan Radu-Adrian

Gas pumping units (GPU) GTK - 25i produced at Nuovo-Pignon company (Italy) have been in operation for more than 40 years and most of them have fulfilled the established service life or are close to it, and therefore their further operation can lead to emergency situations. Considering that on the Urengoy- Pomary-Uzhgorod gas pipeline today more tha...

By Leonid Zamikhovskiy, Volodymyr Pavlyk

This paper presents the current situation of gas meters in Romania, analyzing types of gas meters and also proposing new methods of optimization for that equipment, as finally to be able to achieve and optimize readings of gas meters with an increased safety against gas theft....

By Costel Ieremie Breban, Nicolae Ungureanu

The importance of digital technologies is continuously increasing for the customers and thereby also for the companies. Examples for the digital transformation are the usage of smartphones and other gadgets as well as social media channels as Twitter and Facebook. The changing behavior of the customers has also impact of the relationship between a ...

By Sarah Hahn, Ovidiu Cosma, Cristian Barz, Claudius Klaus Jalba

The efficiency of operation of gas pumping units (HPA) is characterized both by their technological parameters and the technical state of HPA as a whole. If a number of methods and technical means for their implementation have been developed to control the technical condition of the main units of HPA (power bearing elements, blades, piping, etc.), ...

By Leonid Zamikhovskiy, Oleksandra Mirzoieva, Sergii Zikratii